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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
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* Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Element-Checklist-Version: 5 */
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/**
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* SECTION:element-avidemux
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*
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* Demuxes an .avi file into raw or compressed audio and/or video streams.
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*
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* This element supports both push and pull-based scheduling, depending on the
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* capabilities of the upstream elements.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
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* ]| Play (parse and decode) an .avi file and try to output it to
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* an automatically detected soundcard and videosink. If the AVI file contains
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* compressed audio or video data, this will only work if you have the
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* right decoder elements/plugins installed.
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* </refsect2>
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*
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* Last reviewed on 2006-12-29 (0.10.6)
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gst/riff/riff-media.h"
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#include "gstavidemux.h"
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#include "avi-ids.h"
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#include <gst/gst-i18n-plugin.h>
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#include <gst/base/gstadapter.h>
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GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
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#define GST_CAT_DEFAULT avidemux_debug
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GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);
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static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-msvideo")
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);
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static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
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static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
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static void gst_avi_demux_init (GstAviDemux * avi);
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static void gst_avi_demux_finalize (GObject * object);
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static void gst_avi_demux_reset (GstAviDemux * avi);
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#if 0
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static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
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#endif
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static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
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static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
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GstEvent * event);
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static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
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#if 0
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static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
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#endif
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static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
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static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
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static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
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static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
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GstEvent * event);
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static void gst_avi_demux_loop (GstPad * pad);
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static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
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static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
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gboolean active);
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static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
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static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
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static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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/* GObject methods */
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GType
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gst_avi_demux_get_type (void)
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{
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static GType avi_demux_type = 0;
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if (!avi_demux_type) {
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static const GTypeInfo avi_demux_info = {
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sizeof (GstAviDemuxClass),
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(GBaseInitFunc) gst_avi_demux_base_init,
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NULL,
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(GClassInitFunc) gst_avi_demux_class_init,
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NULL,
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NULL,
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sizeof (GstAviDemux),
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0,
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(GInstanceInitFunc) gst_avi_demux_init,
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};
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avi_demux_type =
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g_type_register_static (GST_TYPE_ELEMENT,
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"GstAviDemux", &avi_demux_info, 0);
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}
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return avi_demux_type;
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}
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static void
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gst_avi_demux_base_init (GstAviDemuxClass * klass)
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{
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static const GstElementDetails gst_avi_demux_details =
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GST_ELEMENT_DETAILS ("Avi demuxer",
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"Codec/Demuxer",
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"Demultiplex an avi file into audio and video",
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"Erik Walthinsen <omega@cse.ogi.edu>\n"
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"Wim Taymans <wim.taymans@chello.be>\n"
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"Ronald Bultje <rbultje@ronald.bitfreak.net>\n"
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"Thijs Vermeir <thijsvermeir@gmail.com>");
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
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GstCaps *audcaps, *vidcaps, *subcaps;
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audcaps = gst_riff_create_audio_template_caps ();
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gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
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audiosrctempl = gst_pad_template_new ("audio_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
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vidcaps = gst_riff_create_video_template_caps ();
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gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
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gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
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videosrctempl = gst_pad_template_new ("video_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
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subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
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subsrctempl = gst_pad_template_new ("subtitle_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
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gst_element_class_add_pad_template (element_class, audiosrctempl);
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gst_element_class_add_pad_template (element_class, videosrctempl);
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gst_element_class_add_pad_template (element_class, subsrctempl);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_templ));
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gst_element_class_set_details (element_class, &gst_avi_demux_details);
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}
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static void
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gst_avi_demux_class_init (GstAviDemuxClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
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0, "Demuxer for AVI streams");
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_avi_demux_finalize;
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
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}
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static void
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gst_avi_demux_init (GstAviDemux * avi)
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{
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avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
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gst_pad_set_activate_function (avi->sinkpad,
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GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
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gst_pad_set_activatepull_function (avi->sinkpad,
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GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
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gst_pad_set_activatepush_function (avi->sinkpad,
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GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
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gst_pad_set_chain_function (avi->sinkpad,
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GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
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gst_pad_set_event_function (avi->sinkpad,
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GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
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gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
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avi->adapter = gst_adapter_new ();
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gst_avi_demux_reset (avi);
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}
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static void
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gst_avi_demux_finalize (GObject * object)
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{
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GstAviDemux *avi = GST_AVI_DEMUX (object);
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GST_DEBUG ("AVI: finalize");
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g_object_unref (avi->adapter);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_avi_demux_reset (GstAviDemux * avi)
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{
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gint i;
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GST_DEBUG ("AVI: reset");
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for (i = 0; i < avi->num_streams; i++) {
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g_free (avi->stream[i].strh);
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g_free (avi->stream[i].strf.data);
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if (avi->stream[i].name)
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g_free (avi->stream[i].name);
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if (avi->stream[i].initdata)
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gst_buffer_unref (avi->stream[i].initdata);
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if (avi->stream[i].extradata)
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gst_buffer_unref (avi->stream[i].extradata);
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if (avi->stream[i].pad) {
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gst_pad_set_active (avi->stream[i].pad, FALSE);
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gst_element_remove_pad (GST_ELEMENT (avi), avi->stream[i].pad);
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}
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if (avi->stream[i].taglist) {
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gst_tag_list_free (avi->stream[i].taglist);
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avi->stream[i].taglist = NULL;
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}
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}
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memset (&avi->stream, 0, sizeof (avi->stream));
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avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
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avi->num_streams = 0;
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avi->num_v_streams = 0;
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avi->num_a_streams = 0;
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avi->num_t_streams = 0;
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avi->state = GST_AVI_DEMUX_START;
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avi->offset = 0;
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g_free (avi->index_entries);
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avi->index_entries = NULL;
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avi->index_size = 0;
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avi->index_offset = 0;
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avi->current_entry = 0;
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g_free (avi->avih);
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avi->avih = NULL;
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if (avi->seek_event) {
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gst_event_unref (avi->seek_event);
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avi->seek_event = NULL;
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}
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if (avi->globaltags)
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gst_tag_list_free (avi->globaltags);
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avi->globaltags = NULL;
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avi->got_tags = TRUE; /* we always want to push global tags */
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avi->have_eos = FALSE;
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273 |
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gst_adapter_clear (avi->adapter);
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gst_segment_init (&avi->segment, GST_FORMAT_TIME);
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}
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/* Index helper */
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static gst_avi_index_entry *
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gst_avi_demux_index_last (GstAviDemux * avi, gint stream_nr)
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{
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283 |
gint i;
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gst_avi_index_entry *result = NULL;
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285 |
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for (i = avi->index_size - 1; i >= 0; i--) {
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if (avi->index_entries[i].stream_nr == stream_nr) {
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result = &avi->index_entries[i];
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break;
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}
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}
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return result;
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}
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294 |
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295 |
static gst_avi_index_entry *
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gst_avi_demux_index_next (GstAviDemux * avi, gint stream_nr, gint last,
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297 |
guchar flags)
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298 |
{
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299 |
gint i;
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300 |
gst_avi_index_entry *result = NULL, *entry;
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301 |
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302 |
for (i = last + 1; i < avi->index_size; i++) {
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entry = &avi->index_entries[i];
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304 |
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305 |
if (entry->stream_nr != stream_nr)
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306 |
continue;
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307 |
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308 |
if ((entry->flags & flags) == flags) {
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309 |
result = entry;
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310 |
break;
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311 |
}
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312 |
}
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313 |
return result;
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314 |
}
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315 |
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316 |
static gst_avi_index_entry *
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317 |
gst_avi_demux_index_prev (GstAviDemux * avi, gint stream_nr, gint last,
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318 |
guchar flags)
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319 |
{
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320 |
gint i;
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321 |
gst_avi_index_entry *result = NULL, *entry;
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322 |
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|
323 |
for (i = last - 1; i >= 0; i--) {
|
|
|
324 |
entry = &avi->index_entries[i];
|
|
|
325 |
|
|
|
326 |
if (entry->stream_nr != stream_nr)
|
|
|
327 |
continue;
|
|
|
328 |
|
|
|
329 |
if ((entry->flags & flags) == flags) {
|
|
|
330 |
result = entry;
|
|
|
331 |
break;
|
|
|
332 |
}
|
|
|
333 |
}
|
|
|
334 |
return result;
|
|
|
335 |
}
|
|
|
336 |
|
|
|
337 |
static gint
|
|
|
338 |
gst_avi_demux_index_entry_search (gst_avi_index_entry * entry, guint64 * time)
|
|
|
339 |
{
|
|
|
340 |
if (entry->ts < *time)
|
|
|
341 |
return -1;
|
|
|
342 |
else if (entry->ts > *time)
|
|
|
343 |
return 1;
|
|
|
344 |
return 0;
|
|
|
345 |
}
|
|
|
346 |
|
|
|
347 |
/*
|
|
|
348 |
* gst_avi_index_entry:
|
|
|
349 |
* @avi: Avi object
|
|
|
350 |
* @stream_nr: stream number
|
|
|
351 |
* @time: seek time position
|
|
|
352 |
*
|
|
|
353 |
* Finds the index entry which time is less or equal than the requested time.
|
|
|
354 |
*
|
|
|
355 |
* Returns: the found index entry or %NULL
|
|
|
356 |
*/
|
|
|
357 |
static gst_avi_index_entry *
|
|
|
358 |
gst_avi_demux_index_entry_for_time (GstAviDemux * avi,
|
|
|
359 |
gint stream_nr, guint64 time)
|
|
|
360 |
{
|
|
|
361 |
gst_avi_index_entry *entry = NULL;
|
|
|
362 |
guint n;
|
|
|
363 |
|
|
|
364 |
GST_LOG_OBJECT (avi, "stream_nr:%d , time:%" GST_TIME_FORMAT,
|
|
|
365 |
stream_nr, GST_TIME_ARGS (time));
|
|
|
366 |
|
|
|
367 |
entry = gst_util_array_binary_search (avi->index_entries,
|
|
|
368 |
avi->index_size,
|
|
|
369 |
sizeof (gst_avi_index_entry),
|
|
|
370 |
(GCompareDataFunc) gst_avi_demux_index_entry_search,
|
|
|
371 |
GST_SEARCH_MODE_BEFORE, &time, NULL);
|
|
|
372 |
|
|
|
373 |
n = entry - avi->index_entries;
|
|
|
374 |
if (entry == NULL) {
|
|
|
375 |
entry = &avi->index_entries[0];
|
|
|
376 |
n = 0;
|
|
|
377 |
while (entry->stream_nr != stream_nr && n < avi->index_size - 1) {
|
|
|
378 |
n++;
|
|
|
379 |
entry = &avi->index_entries[n];
|
|
|
380 |
}
|
|
|
381 |
} else if (entry->stream_nr != stream_nr) {
|
|
|
382 |
while (entry->stream_nr != stream_nr && n > 0) {
|
|
|
383 |
n--;
|
|
|
384 |
entry = &avi->index_entries[n];
|
|
|
385 |
}
|
|
|
386 |
}
|
|
|
387 |
|
|
|
388 |
GST_LOG_OBJECT (avi,
|
|
|
389 |
"best at entry %u / ts:%" GST_TIME_FORMAT " / dur:%" GST_TIME_FORMAT
|
|
|
390 |
" flags:%02x", n, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur),
|
|
|
391 |
entry->flags);
|
|
|
392 |
|
|
|
393 |
return entry;
|
|
|
394 |
}
|
|
|
395 |
|
|
|
396 |
/* GstElement methods */
|
|
|
397 |
|
|
|
398 |
#if 0
|
|
|
399 |
static const GstFormat *
|
|
|
400 |
gst_avi_demux_get_src_formats (GstPad * pad)
|
|
|
401 |
{
|
|
|
402 |
avi_stream_context *stream = gst_pad_get_element_private (pad);
|
|
|
403 |
|
|
|
404 |
static const GstFormat src_a_formats[] = {
|
|
|
405 |
GST_FORMAT_TIME,
|
|
|
406 |
GST_FORMAT_BYTES,
|
|
|
407 |
GST_FORMAT_DEFAULT,
|
|
|
408 |
0
|
|
|
409 |
};
|
|
|
410 |
static const GstFormat src_v_formats[] = {
|
|
|
411 |
GST_FORMAT_TIME,
|
|
|
412 |
GST_FORMAT_DEFAULT,
|
|
|
413 |
0
|
|
|
414 |
};
|
|
|
415 |
|
|
|
416 |
return (stream->strh->type == GST_RIFF_FCC_auds ?
|
|
|
417 |
src_a_formats : src_v_formats);
|
|
|
418 |
}
|
|
|
419 |
#endif
|
|
|
420 |
|
|
|
421 |
/* assumes stream->strf.auds->av_bps != 0 */
|
|
|
422 |
static inline GstClockTime
|
|
|
423 |
avi_stream_convert_bytes_to_time_unchecked (avi_stream_context * stream,
|
|
|
424 |
guint64 bytes)
|
|
|
425 |
{
|
|
|
426 |
return gst_util_uint64_scale (bytes, GST_SECOND, stream->strf.auds->av_bps);
|
|
|
427 |
}
|
|
|
428 |
|
|
|
429 |
/* assumes stream->strh->rate != 0 */
|
|
|
430 |
static inline GstClockTime
|
|
|
431 |
avi_stream_convert_frames_to_time_unchecked (avi_stream_context * stream,
|
|
|
432 |
guint64 frames)
|
|
|
433 |
{
|
|
|
434 |
return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
|
|
|
435 |
stream->strh->rate);
|
|
|
436 |
}
|
|
|
437 |
|
|
|
438 |
static gboolean
|
|
|
439 |
gst_avi_demux_src_convert (GstPad * pad,
|
|
|
440 |
GstFormat src_format,
|
|
|
441 |
gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
|
|
|
442 |
{
|
|
|
443 |
avi_stream_context *stream = gst_pad_get_element_private (pad);
|
|
|
444 |
gboolean res = TRUE;
|
|
|
445 |
|
|
|
446 |
GST_LOG_OBJECT (pad,
|
|
|
447 |
"Received src_format:%s, src_value:%" G_GUINT64_FORMAT
|
|
|
448 |
", dest_format:%s", gst_format_get_name (src_format), src_value,
|
|
|
449 |
gst_format_get_name (*dest_format));
|
|
|
450 |
|
|
|
451 |
if (G_UNLIKELY (src_format == *dest_format)) {
|
|
|
452 |
*dest_value = src_value;
|
|
|
453 |
goto done;
|
|
|
454 |
}
|
|
|
455 |
if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
|
|
|
456 |
res = FALSE;
|
|
|
457 |
goto done;
|
|
|
458 |
}
|
|
|
459 |
if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
|
|
|
460 |
(src_format == GST_FORMAT_BYTES
|
|
|
461 |
|| *dest_format == GST_FORMAT_BYTES))) {
|
|
|
462 |
res = FALSE;
|
|
|
463 |
goto done;
|
|
|
464 |
}
|
|
|
465 |
|
|
|
466 |
switch (src_format) {
|
|
|
467 |
case GST_FORMAT_TIME:
|
|
|
468 |
switch (*dest_format) {
|
|
|
469 |
case GST_FORMAT_BYTES:
|
|
|
470 |
*dest_value = gst_util_uint64_scale (src_value,
|
|
|
471 |
(guint64) stream->strf.auds->av_bps, GST_SECOND);
|
|
|
472 |
break;
|
|
|
473 |
case GST_FORMAT_DEFAULT:
|
|
|
474 |
{
|
|
|
475 |
gdouble error;
|
|
|
476 |
|
|
|
477 |
*dest_value = gst_util_uint64_scale (src_value, stream->strh->rate,
|
|
|
478 |
stream->strh->scale * GST_SECOND);
|
|
|
479 |
|
|
|
480 |
/* Attempt to round to nearest integer: if the difference is more
|
|
|
481 |
* than 0.5 (less than -0.5), it means that gst_util_uint64_scale()
|
|
|
482 |
* just truncated an integer, while it had to be rounded
|
|
|
483 |
*/
|
|
|
484 |
error = *dest_value * GST_SECOND -
|
|
|
485 |
src_value * stream->strh->rate / stream->strh->scale;
|
|
|
486 |
if (error <= -0.5)
|
|
|
487 |
*dest_value += 1;
|
|
|
488 |
break;
|
|
|
489 |
}
|
|
|
490 |
default:
|
|
|
491 |
res = FALSE;
|
|
|
492 |
break;
|
|
|
493 |
}
|
|
|
494 |
break;
|
|
|
495 |
case GST_FORMAT_BYTES:
|
|
|
496 |
switch (*dest_format) {
|
|
|
497 |
case GST_FORMAT_TIME:
|
|
|
498 |
if (stream->strf.auds->av_bps != 0) {
|
|
|
499 |
*dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
500 |
src_value);
|
|
|
501 |
} else
|
|
|
502 |
res = FALSE;
|
|
|
503 |
break;
|
|
|
504 |
default:
|
|
|
505 |
res = FALSE;
|
|
|
506 |
break;
|
|
|
507 |
}
|
|
|
508 |
break;
|
|
|
509 |
case GST_FORMAT_DEFAULT:
|
|
|
510 |
switch (*dest_format) {
|
|
|
511 |
case GST_FORMAT_TIME:
|
|
|
512 |
*dest_value =
|
|
|
513 |
avi_stream_convert_frames_to_time_unchecked (stream, src_value);
|
|
|
514 |
break;
|
|
|
515 |
default:
|
|
|
516 |
res = FALSE;
|
|
|
517 |
break;
|
|
|
518 |
}
|
|
|
519 |
break;
|
|
|
520 |
default:
|
|
|
521 |
res = FALSE;
|
|
|
522 |
}
|
|
|
523 |
|
|
|
524 |
done:
|
|
|
525 |
GST_LOG_OBJECT (pad,
|
|
|
526 |
"Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
|
|
|
527 |
gst_format_get_name (*dest_format), *dest_value);
|
|
|
528 |
return res;
|
|
|
529 |
}
|
|
|
530 |
|
|
|
531 |
static const GstQueryType *
|
|
|
532 |
gst_avi_demux_get_src_query_types (GstPad * pad)
|
|
|
533 |
{
|
|
|
534 |
static const GstQueryType src_types[] = {
|
|
|
535 |
GST_QUERY_POSITION,
|
|
|
536 |
GST_QUERY_DURATION,
|
|
|
537 |
GST_QUERY_SEEKING,
|
|
|
538 |
GST_QUERY_CONVERT,
|
|
|
539 |
0
|
|
|
540 |
};
|
|
|
541 |
|
|
|
542 |
return src_types;
|
|
|
543 |
}
|
|
|
544 |
|
|
|
545 |
static gboolean
|
|
|
546 |
gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
|
|
|
547 |
{
|
|
|
548 |
gboolean res = TRUE;
|
|
|
549 |
GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
|
|
|
550 |
|
|
|
551 |
avi_stream_context *stream = gst_pad_get_element_private (pad);
|
|
|
552 |
|
|
|
553 |
if (!stream->strh || !stream->strf.data)
|
|
|
554 |
return gst_pad_query_default (pad, query);
|
|
|
555 |
|
|
|
556 |
switch (GST_QUERY_TYPE (query)) {
|
|
|
557 |
case GST_QUERY_POSITION:{
|
|
|
558 |
gint64 pos = 0;
|
|
|
559 |
|
|
|
560 |
GST_DEBUG ("pos query for stream %d: frames %d, bytes %" G_GUINT64_FORMAT,
|
|
|
561 |
stream->num, stream->current_frame, stream->current_byte);
|
|
|
562 |
|
|
|
563 |
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
564 |
if (stream->is_vbr) {
|
|
|
565 |
/* VBR */
|
|
|
566 |
pos = gst_util_uint64_scale ((gint64) stream->current_frame *
|
|
|
567 |
stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
|
|
|
568 |
GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
|
|
|
569 |
GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
|
|
|
570 |
} else if (stream->strf.auds->av_bps != 0) {
|
|
|
571 |
/* CBR */
|
|
|
572 |
pos = gst_util_uint64_scale (stream->current_byte, GST_SECOND,
|
|
|
573 |
(guint64) stream->strf.auds->av_bps);
|
|
|
574 |
GST_DEBUG_OBJECT (avi,
|
|
|
575 |
"CBR convert bytes %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT,
|
|
|
576 |
stream->current_byte, GST_TIME_ARGS (pos));
|
|
|
577 |
} else if (stream->total_frames != 0 && stream->total_bytes != 0) {
|
|
|
578 |
/* calculate timestamps based on percentage of length */
|
|
|
579 |
guint64 xlen = avi->avih->us_frame *
|
|
|
580 |
avi->avih->tot_frames * GST_USECOND;
|
|
|
581 |
|
|
|
582 |
if (stream->is_vbr) {
|
|
|
583 |
pos = gst_util_uint64_scale (xlen, stream->current_frame,
|
|
|
584 |
stream->total_frames);
|
|
|
585 |
GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
|
|
|
586 |
GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
|
|
|
587 |
} else {
|
|
|
588 |
pos = gst_util_uint64_scale (xlen, stream->current_byte,
|
|
|
589 |
stream->total_bytes);
|
|
|
590 |
GST_DEBUG_OBJECT (avi, "CBR perc convert bytes %" G_GUINT64_FORMAT
|
|
|
591 |
", time %" GST_TIME_FORMAT, stream->current_byte,
|
|
|
592 |
GST_TIME_ARGS (pos));
|
|
|
593 |
}
|
|
|
594 |
} else {
|
|
|
595 |
/* we don't know */
|
|
|
596 |
res = FALSE;
|
|
|
597 |
}
|
|
|
598 |
} else {
|
|
|
599 |
if (stream->strh->rate != 0) {
|
|
|
600 |
pos = gst_util_uint64_scale ((guint64) stream->current_frame *
|
|
|
601 |
stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
|
|
|
602 |
} else {
|
|
|
603 |
pos = stream->current_frame * avi->avih->us_frame * GST_USECOND;
|
|
|
604 |
}
|
|
|
605 |
}
|
|
|
606 |
if (res) {
|
|
|
607 |
GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
|
|
|
608 |
gst_query_set_position (query, GST_FORMAT_TIME, pos);
|
|
|
609 |
} else
|
|
|
610 |
GST_WARNING ("pos query failed");
|
|
|
611 |
break;
|
|
|
612 |
}
|
|
|
613 |
case GST_QUERY_DURATION:
|
|
|
614 |
{
|
|
|
615 |
GstFormat fmt;
|
|
|
616 |
|
|
|
617 |
if (stream->strh->type != GST_RIFF_FCC_auds &&
|
|
|
618 |
stream->strh->type != GST_RIFF_FCC_vids) {
|
|
|
619 |
res = FALSE;
|
|
|
620 |
break;
|
|
|
621 |
}
|
|
|
622 |
|
|
|
623 |
gst_query_parse_duration (query, &fmt, NULL);
|
|
|
624 |
|
|
|
625 |
switch (fmt) {
|
|
|
626 |
case GST_FORMAT_TIME:
|
|
|
627 |
gst_query_set_duration (query, fmt, stream->duration);
|
|
|
628 |
break;
|
|
|
629 |
case GST_FORMAT_DEFAULT:
|
|
|
630 |
{
|
|
|
631 |
gint64 dur;
|
|
|
632 |
GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
|
|
|
633 |
stream->total_frames);
|
|
|
634 |
|
|
|
635 |
if (stream->total_frames >= 0)
|
|
|
636 |
gst_query_set_duration (query, fmt, stream->total_frames);
|
|
|
637 |
else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
|
|
|
638 |
stream->duration, &fmt, &dur))
|
|
|
639 |
gst_query_set_duration (query, fmt, dur);
|
|
|
640 |
break;
|
|
|
641 |
}
|
|
|
642 |
default:
|
|
|
643 |
res = FALSE;
|
|
|
644 |
break;
|
|
|
645 |
}
|
|
|
646 |
break;
|
|
|
647 |
}
|
|
|
648 |
case GST_QUERY_SEEKING:{
|
|
|
649 |
GstFormat fmt;
|
|
|
650 |
|
|
|
651 |
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
|
|
|
652 |
if (fmt == GST_FORMAT_TIME) {
|
|
|
653 |
gboolean seekable = TRUE;
|
|
|
654 |
|
|
|
655 |
if (avi->streaming) {
|
|
|
656 |
seekable = FALSE;
|
|
|
657 |
} else {
|
|
|
658 |
if (avi->index_entries == NULL) {
|
|
|
659 |
seekable = FALSE;
|
|
|
660 |
/* FIXME: when building index_entried, count keyframes
|
|
|
661 |
if (!(avi->key_frame_ct > 1))
|
|
|
662 |
seekable = FALSE;
|
|
|
663 |
*/
|
|
|
664 |
}
|
|
|
665 |
}
|
|
|
666 |
|
|
|
667 |
gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
|
|
|
668 |
0, stream->duration);
|
|
|
669 |
res = TRUE;
|
|
|
670 |
}
|
|
|
671 |
break;
|
|
|
672 |
}
|
|
|
673 |
case GST_QUERY_CONVERT:{
|
|
|
674 |
GstFormat src_fmt, dest_fmt;
|
|
|
675 |
gint64 src_val, dest_val;
|
|
|
676 |
|
|
|
677 |
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
|
|
|
678 |
if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
|
|
|
679 |
&dest_val)))
|
|
|
680 |
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
|
|
|
681 |
else
|
|
|
682 |
res = gst_pad_query_default (pad, query);
|
|
|
683 |
break;
|
|
|
684 |
}
|
|
|
685 |
default:
|
|
|
686 |
res = gst_pad_query_default (pad, query);
|
|
|
687 |
break;
|
|
|
688 |
}
|
|
|
689 |
|
|
|
690 |
gst_object_unref (avi);
|
|
|
691 |
return res;
|
|
|
692 |
}
|
|
|
693 |
|
|
|
694 |
#if 0
|
|
|
695 |
static const GstEventMask *
|
|
|
696 |
gst_avi_demux_get_event_mask (GstPad * pad)
|
|
|
697 |
{
|
|
|
698 |
static const GstEventMask masks[] = {
|
|
|
699 |
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
|
|
|
700 |
{0,}
|
|
|
701 |
};
|
|
|
702 |
|
|
|
703 |
return masks;
|
|
|
704 |
}
|
|
|
705 |
#endif
|
|
|
706 |
|
|
|
707 |
static gboolean
|
|
|
708 |
gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
|
|
|
709 |
{
|
|
|
710 |
gboolean res = TRUE;
|
|
|
711 |
GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
|
|
|
712 |
|
|
|
713 |
GST_DEBUG_OBJECT (avi,
|
|
|
714 |
"have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
|
|
|
715 |
|
|
|
716 |
switch (GST_EVENT_TYPE (event)) {
|
|
|
717 |
case GST_EVENT_NEWSEGMENT:
|
|
|
718 |
/* Drop NEWSEGMENT events, new ones are generated later */
|
|
|
719 |
gst_event_unref (event);
|
|
|
720 |
break;
|
|
|
721 |
case GST_EVENT_EOS:
|
|
|
722 |
{
|
|
|
723 |
if (avi->state != GST_AVI_DEMUX_MOVI) {
|
|
|
724 |
gst_event_unref (event);
|
|
|
725 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
|
|
|
726 |
(NULL), ("got eos and didn't receive a complete header object"));
|
|
|
727 |
} else if (!gst_avi_demux_push_event (avi, event)) {
|
|
|
728 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
|
|
|
729 |
(NULL), ("got eos but no streams (yet)"));
|
|
|
730 |
}
|
|
|
731 |
break;
|
|
|
732 |
}
|
|
|
733 |
default:
|
|
|
734 |
res = gst_pad_event_default (pad, event);
|
|
|
735 |
break;
|
|
|
736 |
}
|
|
|
737 |
|
|
|
738 |
gst_object_unref (avi);
|
|
|
739 |
|
|
|
740 |
return res;
|
|
|
741 |
}
|
|
|
742 |
|
|
|
743 |
static gboolean
|
|
|
744 |
gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
|
|
|
745 |
{
|
|
|
746 |
gboolean res = TRUE;
|
|
|
747 |
GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
|
|
|
748 |
|
|
|
749 |
GST_DEBUG_OBJECT (avi,
|
|
|
750 |
"have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
|
|
|
751 |
|
|
|
752 |
switch (GST_EVENT_TYPE (event)) {
|
|
|
753 |
case GST_EVENT_SEEK:
|
|
|
754 |
/* handle seeking only in pull mode */
|
|
|
755 |
if (!avi->streaming) {
|
|
|
756 |
res = gst_avi_demux_handle_seek (avi, pad, event);
|
|
|
757 |
gst_event_unref (event);
|
|
|
758 |
} else {
|
|
|
759 |
res = gst_pad_event_default (pad, event);
|
|
|
760 |
}
|
|
|
761 |
break;
|
|
|
762 |
case GST_EVENT_QOS:
|
|
|
763 |
case GST_EVENT_NAVIGATION:
|
|
|
764 |
res = FALSE;
|
|
|
765 |
gst_event_unref (event);
|
|
|
766 |
break;
|
|
|
767 |
default:
|
|
|
768 |
res = gst_pad_event_default (pad, event);
|
|
|
769 |
break;
|
|
|
770 |
}
|
|
|
771 |
|
|
|
772 |
gst_object_unref (avi);
|
|
|
773 |
|
|
|
774 |
return res;
|
|
|
775 |
}
|
|
|
776 |
|
|
|
777 |
/* streaming helper (push) */
|
|
|
778 |
|
|
|
779 |
/*
|
|
|
780 |
* gst_avi_demux_peek_chunk_info:
|
|
|
781 |
* @avi: Avi object
|
|
|
782 |
* @tag: holder for tag
|
|
|
783 |
* @size: holder for tag size
|
|
|
784 |
*
|
|
|
785 |
* Peek next chunk info (tag and size)
|
|
|
786 |
*
|
|
|
787 |
* Returns: TRUE when one chunk info has been got
|
|
|
788 |
*/
|
|
|
789 |
static gboolean
|
|
|
790 |
gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
|
|
|
791 |
{
|
|
|
792 |
const guint8 *data = NULL;
|
|
|
793 |
|
|
|
794 |
if (gst_adapter_available (avi->adapter) < 8) {
|
|
|
795 |
return FALSE;
|
|
|
796 |
}
|
|
|
797 |
|
|
|
798 |
data = gst_adapter_peek (avi->adapter, 8);
|
|
|
799 |
*tag = GST_READ_UINT32_LE (data);
|
|
|
800 |
*size = GST_READ_UINT32_LE (data + 4);
|
|
|
801 |
|
|
|
802 |
return TRUE;
|
|
|
803 |
}
|
|
|
804 |
|
|
|
805 |
/*
|
|
|
806 |
* gst_avi_demux_peek_chunk:
|
|
|
807 |
* @avi: Avi object
|
|
|
808 |
* @tag: holder for tag
|
|
|
809 |
* @size: holder for tag size
|
|
|
810 |
*
|
|
|
811 |
* Peek enough data for one full chunk
|
|
|
812 |
*
|
|
|
813 |
* Returns: %TRUE when one chunk has been got
|
|
|
814 |
*/
|
|
|
815 |
static gboolean
|
|
|
816 |
gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
|
|
|
817 |
{
|
|
|
818 |
guint32 peek_size = 0;
|
|
|
819 |
gint available;
|
|
|
820 |
|
|
|
821 |
if (!gst_avi_demux_peek_chunk_info (avi, tag, size)) {
|
|
|
822 |
return FALSE;
|
|
|
823 |
}
|
|
|
824 |
/* FIXME: shouldn't this check go to gst_avi_demux_peek_chunk_info() already */
|
|
|
825 |
if (!(*size) || (*size) == -1) {
|
|
|
826 |
GST_INFO ("Invalid chunk size %d for tag %" GST_FOURCC_FORMAT,
|
|
|
827 |
*size, GST_FOURCC_ARGS (*tag));
|
|
|
828 |
return FALSE;
|
|
|
829 |
}
|
|
|
830 |
peek_size = (*size + 1) & ~1;
|
|
|
831 |
available = gst_adapter_available (avi->adapter);
|
|
|
832 |
|
|
|
833 |
GST_DEBUG ("Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
|
|
|
834 |
", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
|
|
|
835 |
|
|
|
836 |
if (available >= (8 + peek_size)) {
|
|
|
837 |
return TRUE;
|
|
|
838 |
} else {
|
|
|
839 |
return FALSE;
|
|
|
840 |
}
|
|
|
841 |
}
|
|
|
842 |
|
|
|
843 |
/* AVI init */
|
|
|
844 |
|
|
|
845 |
/*
|
|
|
846 |
* gst_avi_demux_parse_file_header:
|
|
|
847 |
* @element: caller element (used for errors/debug).
|
|
|
848 |
* @buf: input data to be used for parsing.
|
|
|
849 |
*
|
|
|
850 |
* "Open" a RIFF/AVI file. The buffer should be at least 12
|
|
|
851 |
* bytes long. Takes ownership of @buf.
|
|
|
852 |
*
|
|
|
853 |
* Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
|
|
|
854 |
* Throws an error, caller should error out (fatal).
|
|
|
855 |
*/
|
|
|
856 |
static gboolean
|
|
|
857 |
gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
|
|
|
858 |
{
|
|
|
859 |
guint32 doctype;
|
|
|
860 |
|
|
|
861 |
/* riff_parse posts an error */
|
|
|
862 |
if (!gst_riff_parse_file_header (element, buf, &doctype))
|
|
|
863 |
return FALSE;
|
|
|
864 |
|
|
|
865 |
if (doctype != GST_RIFF_RIFF_AVI)
|
|
|
866 |
goto not_avi;
|
|
|
867 |
|
|
|
868 |
return TRUE;
|
|
|
869 |
|
|
|
870 |
/* ERRORS */
|
|
|
871 |
not_avi:
|
|
|
872 |
{
|
|
|
873 |
GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
|
|
|
874 |
("File is not an AVI file: %" GST_FOURCC_FORMAT,
|
|
|
875 |
GST_FOURCC_ARGS (doctype)));
|
|
|
876 |
return FALSE;
|
|
|
877 |
}
|
|
|
878 |
}
|
|
|
879 |
|
|
|
880 |
/*
|
|
|
881 |
* Read AVI file tag when streaming
|
|
|
882 |
*/
|
|
|
883 |
static GstFlowReturn
|
|
|
884 |
gst_avi_demux_stream_init_push (GstAviDemux * avi)
|
|
|
885 |
{
|
|
|
886 |
if (gst_adapter_available (avi->adapter) >= 12) {
|
|
|
887 |
GstBuffer *tmp;
|
|
|
888 |
|
|
|
889 |
tmp = gst_adapter_take_buffer (avi->adapter, 12);
|
|
|
890 |
|
|
|
891 |
GST_DEBUG ("Parsing avi header");
|
|
|
892 |
if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
|
|
|
893 |
return GST_FLOW_ERROR;
|
|
|
894 |
}
|
|
|
895 |
GST_DEBUG ("header ok");
|
|
|
896 |
avi->offset += 12;
|
|
|
897 |
|
|
|
898 |
avi->state = GST_AVI_DEMUX_HEADER;
|
|
|
899 |
}
|
|
|
900 |
return GST_FLOW_OK;
|
|
|
901 |
}
|
|
|
902 |
|
|
|
903 |
/*
|
|
|
904 |
* Read AVI file tag
|
|
|
905 |
*/
|
|
|
906 |
static GstFlowReturn
|
|
|
907 |
gst_avi_demux_stream_init_pull (GstAviDemux * avi)
|
|
|
908 |
{
|
|
|
909 |
GstFlowReturn res;
|
|
|
910 |
GstBuffer *buf = NULL;
|
|
|
911 |
|
|
|
912 |
res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
|
|
|
913 |
if (res != GST_FLOW_OK)
|
|
|
914 |
return res;
|
|
|
915 |
else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
|
|
|
916 |
goto wrong_header;
|
|
|
917 |
|
|
|
918 |
avi->offset += 12;
|
|
|
919 |
|
|
|
920 |
return GST_FLOW_OK;
|
|
|
921 |
|
|
|
922 |
/* ERRORS */
|
|
|
923 |
wrong_header:
|
|
|
924 |
{
|
|
|
925 |
GST_DEBUG_OBJECT (avi, "error parsing file header");
|
|
|
926 |
return GST_FLOW_ERROR;
|
|
|
927 |
}
|
|
|
928 |
}
|
|
|
929 |
|
|
|
930 |
/* AVI header handling */
|
|
|
931 |
|
|
|
932 |
/*
|
|
|
933 |
* gst_avi_demux_parse_avih:
|
|
|
934 |
* @element: caller element (used for errors/debug).
|
|
|
935 |
* @buf: input data to be used for parsing.
|
|
|
936 |
* @avih: pointer to structure (filled in by function) containing
|
|
|
937 |
* stream information (such as flags, number of streams, etc.).
|
|
|
938 |
*
|
|
|
939 |
* Read 'avih' header. Discards buffer after use.
|
|
|
940 |
*
|
|
|
941 |
* Returns: TRUE on success, FALSE otherwise. Throws an error if
|
|
|
942 |
* the header is invalid. The caller should error out
|
|
|
943 |
* (fatal).
|
|
|
944 |
*/
|
|
|
945 |
static gboolean
|
|
|
946 |
gst_avi_demux_parse_avih (GstElement * element,
|
|
|
947 |
GstBuffer * buf, gst_riff_avih ** _avih)
|
|
|
948 |
{
|
|
|
949 |
gst_riff_avih *avih;
|
|
|
950 |
|
|
|
951 |
if (buf == NULL)
|
|
|
952 |
goto no_buffer;
|
|
|
953 |
|
|
|
954 |
if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
|
|
|
955 |
goto avih_too_small;
|
|
|
956 |
|
|
|
957 |
avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
|
|
|
958 |
|
|
|
959 |
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
|
|
960 |
avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
|
|
|
961 |
avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
|
|
|
962 |
avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
|
|
|
963 |
avih->flags = GUINT32_FROM_LE (avih->flags);
|
|
|
964 |
avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
|
|
|
965 |
avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
|
|
|
966 |
avih->streams = GUINT32_FROM_LE (avih->streams);
|
|
|
967 |
avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
|
|
|
968 |
avih->width = GUINT32_FROM_LE (avih->width);
|
|
|
969 |
avih->height = GUINT32_FROM_LE (avih->height);
|
|
|
970 |
avih->scale = GUINT32_FROM_LE (avih->scale);
|
|
|
971 |
avih->rate = GUINT32_FROM_LE (avih->rate);
|
|
|
972 |
avih->start = GUINT32_FROM_LE (avih->start);
|
|
|
973 |
avih->length = GUINT32_FROM_LE (avih->length);
|
|
|
974 |
#endif
|
|
|
975 |
|
|
|
976 |
/* debug stuff */
|
|
|
977 |
GST_INFO_OBJECT (element, "avih tag found:");
|
|
|
978 |
GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
|
|
|
979 |
GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
|
|
|
980 |
GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
|
|
|
981 |
GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
|
|
|
982 |
GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
|
|
|
983 |
GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
|
|
|
984 |
GST_INFO_OBJECT (element, " streams %u", avih->streams);
|
|
|
985 |
GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
|
|
|
986 |
GST_INFO_OBJECT (element, " width %u", avih->width);
|
|
|
987 |
GST_INFO_OBJECT (element, " height %u", avih->height);
|
|
|
988 |
GST_INFO_OBJECT (element, " scale %u", avih->scale);
|
|
|
989 |
GST_INFO_OBJECT (element, " rate %u", avih->rate);
|
|
|
990 |
GST_INFO_OBJECT (element, " start %u", avih->start);
|
|
|
991 |
GST_INFO_OBJECT (element, " length %u", avih->length);
|
|
|
992 |
|
|
|
993 |
*_avih = avih;
|
|
|
994 |
gst_buffer_unref (buf);
|
|
|
995 |
|
|
|
996 |
return TRUE;
|
|
|
997 |
|
|
|
998 |
/* ERRORS */
|
|
|
999 |
no_buffer:
|
|
|
1000 |
{
|
|
|
1001 |
GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
|
|
|
1002 |
return FALSE;
|
|
|
1003 |
}
|
|
|
1004 |
avih_too_small:
|
|
|
1005 |
{
|
|
|
1006 |
GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
|
|
|
1007 |
("Too small avih (%d available, %d needed)",
|
|
|
1008 |
GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
|
|
|
1009 |
gst_buffer_unref (buf);
|
|
|
1010 |
return FALSE;
|
|
|
1011 |
}
|
|
|
1012 |
}
|
|
|
1013 |
|
|
|
1014 |
/*
|
|
|
1015 |
* gst_avi_demux_parse_superindex:
|
|
|
1016 |
* @avi: caller element (used for debugging/errors).
|
|
|
1017 |
* @buf: input data to use for parsing.
|
|
|
1018 |
* @locations: locations in the file (byte-offsets) that contain
|
|
|
1019 |
* the actual indexes (see get_avi_demux_parse_subindex()).
|
|
|
1020 |
* The array ends with GST_BUFFER_OFFSET_NONE.
|
|
|
1021 |
*
|
|
|
1022 |
* Reads superindex (openDML-2 spec stuff) from the provided data.
|
|
|
1023 |
*
|
|
|
1024 |
* Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
|
|
|
1025 |
* on error, but they are not fatal.
|
|
|
1026 |
*/
|
|
|
1027 |
static gboolean
|
|
|
1028 |
gst_avi_demux_parse_superindex (GstAviDemux * avi,
|
|
|
1029 |
GstBuffer * buf, guint64 ** _indexes)
|
|
|
1030 |
{
|
|
|
1031 |
guint8 *data;
|
|
|
1032 |
guint16 bpe = 16;
|
|
|
1033 |
guint32 num, i;
|
|
|
1034 |
guint64 *indexes;
|
|
|
1035 |
guint size;
|
|
|
1036 |
|
|
|
1037 |
*_indexes = NULL;
|
|
|
1038 |
|
|
|
1039 |
size = buf ? GST_BUFFER_SIZE (buf) : 0;
|
|
|
1040 |
if (size < 24)
|
|
|
1041 |
goto too_small;
|
|
|
1042 |
|
|
|
1043 |
data = GST_BUFFER_DATA (buf);
|
|
|
1044 |
|
|
|
1045 |
/* check type of index. The opendml2 specs state that
|
|
|
1046 |
* there should be 4 dwords per array entry. Type can be
|
|
|
1047 |
* either frame or field (and we don't care). */
|
|
|
1048 |
if (GST_READ_UINT16_LE (data) != 4 ||
|
|
|
1049 |
(data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
|
|
|
1050 |
GST_WARNING_OBJECT (avi,
|
|
|
1051 |
"Superindex for stream has unexpected "
|
|
|
1052 |
"size_entry %d (bytes) or flags 0x%02x/0x%02x",
|
|
|
1053 |
GST_READ_UINT16_LE (data), data[2], data[3]);
|
|
|
1054 |
bpe = GST_READ_UINT16_LE (data) * 4;
|
|
|
1055 |
}
|
|
|
1056 |
num = GST_READ_UINT32_LE (&data[4]);
|
|
|
1057 |
|
|
|
1058 |
indexes = g_new (guint64, num + 1);
|
|
|
1059 |
for (i = 0; i < num; i++) {
|
|
|
1060 |
if (size < 24 + bpe * (i + 1))
|
|
|
1061 |
break;
|
|
|
1062 |
indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
|
|
|
1063 |
}
|
|
|
1064 |
indexes[i] = GST_BUFFER_OFFSET_NONE;
|
|
|
1065 |
*_indexes = indexes;
|
|
|
1066 |
|
|
|
1067 |
gst_buffer_unref (buf);
|
|
|
1068 |
|
|
|
1069 |
return TRUE;
|
|
|
1070 |
|
|
|
1071 |
/* ERRORS */
|
|
|
1072 |
too_small:
|
|
|
1073 |
{
|
|
|
1074 |
GST_ERROR_OBJECT (avi,
|
|
|
1075 |
"Not enough data to parse superindex (%d available, 24 needed)", size);
|
|
|
1076 |
if (buf)
|
|
|
1077 |
gst_buffer_unref (buf);
|
|
|
1078 |
return FALSE;
|
|
|
1079 |
}
|
|
|
1080 |
}
|
|
|
1081 |
|
|
|
1082 |
/*
|
|
|
1083 |
* gst_avi_demux_parse_subindex:
|
|
|
1084 |
* @avi: Avi object
|
|
|
1085 |
* @buf: input data to use for parsing.
|
|
|
1086 |
* @stream: stream context.
|
|
|
1087 |
* @entries_list: a list (returned by the function) containing all the
|
|
|
1088 |
* indexes parsed in this specific subindex. The first
|
|
|
1089 |
* entry is also a pointer to allocated memory that needs
|
|
|
1090 |
* to be free´ed. May be NULL if no supported indexes were
|
|
|
1091 |
* found.
|
|
|
1092 |
*
|
|
|
1093 |
* Reads superindex (openDML-2 spec stuff) from the provided data.
|
|
|
1094 |
* The buffer will be discarded after use.
|
|
|
1095 |
*
|
|
|
1096 |
* Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
|
|
|
1097 |
* throw an error, caller should bail out asap.
|
|
|
1098 |
*/
|
|
|
1099 |
static gboolean
|
|
|
1100 |
gst_avi_demux_parse_subindex (GstAviDemux * avi,
|
|
|
1101 |
GstBuffer * buf, avi_stream_context * stream, GList ** _entries_list)
|
|
|
1102 |
{
|
|
|
1103 |
guint8 *data = GST_BUFFER_DATA (buf);
|
|
|
1104 |
guint16 bpe;
|
|
|
1105 |
guint32 num, i;
|
|
|
1106 |
guint64 baseoff;
|
|
|
1107 |
gst_avi_index_entry *entries, *entry;
|
|
|
1108 |
GList *entries_list = NULL;
|
|
|
1109 |
guint size;
|
|
|
1110 |
|
|
|
1111 |
*_entries_list = NULL;
|
|
|
1112 |
|
|
|
1113 |
size = buf ? GST_BUFFER_SIZE (buf) : 0;
|
|
|
1114 |
|
|
|
1115 |
/* check size */
|
|
|
1116 |
if (size < 24)
|
|
|
1117 |
goto too_small;
|
|
|
1118 |
|
|
|
1119 |
/* We don't support index-data yet */
|
|
|
1120 |
if (data[3] & 0x80)
|
|
|
1121 |
goto not_implemented;
|
|
|
1122 |
|
|
|
1123 |
/* check type of index. The opendml2 specs state that
|
|
|
1124 |
* there should be 4 dwords per array entry. Type can be
|
|
|
1125 |
* either frame or field (and we don't care). */
|
|
|
1126 |
bpe = (data[2] & 0x01) ? 12 : 8;
|
|
|
1127 |
if (GST_READ_UINT16_LE (data) != bpe / 4 ||
|
|
|
1128 |
(data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
|
|
|
1129 |
GST_WARNING_OBJECT (avi,
|
|
|
1130 |
"Superindex for stream %d has unexpected "
|
|
|
1131 |
"size_entry %d (bytes) or flags 0x%02x/0x%02x",
|
|
|
1132 |
stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
|
|
|
1133 |
bpe = GST_READ_UINT16_LE (data) * 4;
|
|
|
1134 |
}
|
|
|
1135 |
num = GST_READ_UINT32_LE (&data[4]);
|
|
|
1136 |
baseoff = GST_READ_UINT64_LE (&data[12]);
|
|
|
1137 |
|
|
|
1138 |
/* If there's nothing, just return ! */
|
|
|
1139 |
if (num == 0)
|
|
|
1140 |
return TRUE;
|
|
|
1141 |
|
|
|
1142 |
if (!(entries = g_try_new (gst_avi_index_entry, num)))
|
|
|
1143 |
goto out_of_mem;
|
|
|
1144 |
|
|
|
1145 |
for (i = 0; i < num; i++) {
|
|
|
1146 |
gint64 next_ts;
|
|
|
1147 |
|
|
|
1148 |
entry = &entries[i];
|
|
|
1149 |
|
|
|
1150 |
if (size < 24 + bpe * (i + 1))
|
|
|
1151 |
break;
|
|
|
1152 |
|
|
|
1153 |
/* fill in */
|
|
|
1154 |
entry->offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
|
|
|
1155 |
entry->size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
|
|
|
1156 |
entry->flags =
|
|
|
1157 |
(entry->size & 0x80000000) ? 0 : GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
|
|
1158 |
entry->size &= ~0x80000000;
|
|
|
1159 |
entry->index_nr = i;
|
|
|
1160 |
entry->stream_nr = stream->num;
|
|
|
1161 |
|
|
|
1162 |
/* stream duration unknown, now we can calculate it */
|
|
|
1163 |
if (stream->idx_duration == -1)
|
|
|
1164 |
stream->idx_duration = 0;
|
|
|
1165 |
|
|
|
1166 |
/* timestamps */
|
|
|
1167 |
entry->ts = stream->idx_duration;
|
|
|
1168 |
if (stream->is_vbr) {
|
|
|
1169 |
/* VBR stream next timestamp */
|
|
|
1170 |
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
1171 |
next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
1172 |
stream->total_blocks + 1);
|
|
|
1173 |
} else {
|
|
|
1174 |
next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
1175 |
stream->total_frames + 1);
|
|
|
1176 |
}
|
|
|
1177 |
} else {
|
|
|
1178 |
/* CBR get next timestamp */
|
|
|
1179 |
next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
1180 |
stream->total_bytes + entry->size);
|
|
|
1181 |
}
|
|
|
1182 |
/* duration is next - current */
|
|
|
1183 |
entry->dur = next_ts - entry->ts;
|
|
|
1184 |
|
|
|
1185 |
/* stream position */
|
|
|
1186 |
entry->bytes_before = stream->total_bytes;
|
|
|
1187 |
entry->frames_before = stream->total_frames;
|
|
|
1188 |
|
|
|
1189 |
stream->total_bytes += entry->size;
|
|
|
1190 |
stream->total_frames++;
|
|
|
1191 |
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
1192 |
if (stream->strf.auds->blockalign > 0)
|
|
|
1193 |
stream->total_blocks +=
|
|
|
1194 |
(entry->size + stream->strf.auds->blockalign -
|
|
|
1195 |
1) / stream->strf.auds->blockalign;
|
|
|
1196 |
else
|
|
|
1197 |
stream->total_blocks++;
|
|
|
1198 |
}
|
|
|
1199 |
stream->idx_duration = next_ts;
|
|
|
1200 |
|
|
|
1201 |
entries_list = g_list_prepend (entries_list, entry);
|
|
|
1202 |
}
|
|
|
1203 |
|
|
|
1204 |
GST_LOG_OBJECT (avi, "Read %d index entries", i);
|
|
|
1205 |
|
|
|
1206 |
gst_buffer_unref (buf);
|
|
|
1207 |
|
|
|
1208 |
if (i > 0) {
|
|
|
1209 |
*_entries_list = g_list_reverse (entries_list);
|
|
|
1210 |
} else {
|
|
|
1211 |
g_free (entries);
|
|
|
1212 |
}
|
|
|
1213 |
|
|
|
1214 |
return TRUE;
|
|
|
1215 |
|
|
|
1216 |
/* ERRORS */
|
|
|
1217 |
too_small:
|
|
|
1218 |
{
|
|
|
1219 |
GST_ERROR_OBJECT (avi,
|
|
|
1220 |
"Not enough data to parse subindex (%d available, 24 needed)", size);
|
|
|
1221 |
if (buf)
|
|
|
1222 |
gst_buffer_unref (buf);
|
|
|
1223 |
return TRUE; /* continue */
|
|
|
1224 |
}
|
|
|
1225 |
not_implemented:
|
|
|
1226 |
{
|
|
|
1227 |
GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
|
|
|
1228 |
("Subindex-is-data is not implemented"));
|
|
|
1229 |
gst_buffer_unref (buf);
|
|
|
1230 |
return FALSE;
|
|
|
1231 |
}
|
|
|
1232 |
out_of_mem:
|
|
|
1233 |
{
|
|
|
1234 |
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
|
|
1235 |
("Cannot allocate memory for %u*%u=%u bytes",
|
|
|
1236 |
(guint) sizeof (gst_avi_index_entry), num,
|
|
|
1237 |
(guint) sizeof (gst_avi_index_entry) * num));
|
|
|
1238 |
gst_buffer_unref (buf);
|
|
|
1239 |
return FALSE;
|
|
|
1240 |
}
|
|
|
1241 |
}
|
|
|
1242 |
|
|
|
1243 |
#if 0
|
|
|
1244 |
/*
|
|
|
1245 |
* Read AVI index when streaming
|
|
|
1246 |
*/
|
|
|
1247 |
static void
|
|
|
1248 |
gst_avi_demux_read_subindexes_push (GstAviDemux * avi,
|
|
|
1249 |
GList ** index, GList ** alloc_list)
|
|
|
1250 |
{
|
|
|
1251 |
GList *list = NULL;
|
|
|
1252 |
guint32 tag = 0, size;
|
|
|
1253 |
GstBuffer *buf = NULL;
|
|
|
1254 |
gint i, n;
|
|
|
1255 |
|
|
|
1256 |
GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_push for %d streams",
|
|
|
1257 |
avi->num_streams);
|
|
|
1258 |
|
|
|
1259 |
for (n = 0; n < avi->num_streams; n++) {
|
|
|
1260 |
avi_stream_context *stream = &avi->stream[n];
|
|
|
1261 |
|
|
|
1262 |
for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
|
|
|
1263 |
if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
|
|
|
1264 |
continue;
|
|
|
1265 |
else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
|
|
|
1266 |
'0' + stream->num % 10)) &&
|
|
|
1267 |
(tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
|
|
|
1268 |
'0' + stream->num % 10, 'i', 'x'))) {
|
|
|
1269 |
GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
|
|
|
1270 |
GST_FOURCC_ARGS (tag));
|
|
|
1271 |
continue;
|
|
|
1272 |
}
|
|
|
1273 |
|
|
|
1274 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
1275 |
|
|
|
1276 |
buf = gst_buffer_new ();
|
|
|
1277 |
GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
|
|
|
1278 |
GST_BUFFER_SIZE (buf) = size;
|
|
|
1279 |
|
|
|
1280 |
if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
|
|
|
1281 |
continue;
|
|
|
1282 |
if (list) {
|
|
|
1283 |
GST_DEBUG_OBJECT (avi, " adding %d entries", g_list_length (list));
|
|
|
1284 |
*alloc_list = g_list_append (*alloc_list, list->data);
|
|
|
1285 |
*index = g_list_concat (*index, list);
|
|
|
1286 |
}
|
|
|
1287 |
}
|
|
|
1288 |
|
|
|
1289 |
g_free (stream->indexes);
|
|
|
1290 |
stream->indexes = NULL;
|
|
|
1291 |
}
|
|
|
1292 |
GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
|
|
|
1293 |
}
|
|
|
1294 |
#endif
|
|
|
1295 |
|
|
|
1296 |
/*
|
|
|
1297 |
* Read AVI index
|
|
|
1298 |
*/
|
|
|
1299 |
static void
|
|
|
1300 |
gst_avi_demux_read_subindexes_pull (GstAviDemux * avi,
|
|
|
1301 |
GList ** index, GList ** alloc_list)
|
|
|
1302 |
{
|
|
|
1303 |
GList *list = NULL;
|
|
|
1304 |
guint32 tag;
|
|
|
1305 |
GstBuffer *buf;
|
|
|
1306 |
gint i, n;
|
|
|
1307 |
|
|
|
1308 |
GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_pull for %d streams",
|
|
|
1309 |
avi->num_streams);
|
|
|
1310 |
|
|
|
1311 |
for (n = 0; n < avi->num_streams; n++) {
|
|
|
1312 |
avi_stream_context *stream = &avi->stream[n];
|
|
|
1313 |
|
|
|
1314 |
for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
|
|
|
1315 |
if (gst_riff_read_chunk (GST_ELEMENT (avi), avi->sinkpad,
|
|
|
1316 |
&stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
|
|
|
1317 |
continue;
|
|
|
1318 |
else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
|
|
|
1319 |
'0' + stream->num % 10)) &&
|
|
|
1320 |
(tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
|
|
|
1321 |
'0' + stream->num % 10, 'i', 'x'))) {
|
|
|
1322 |
/* Some ODML files (created by god knows what muxer) have a ##ix format
|
|
|
1323 |
* instead of the 'official' ix##. They are still valid though. */
|
|
|
1324 |
GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
|
|
|
1325 |
GST_FOURCC_ARGS (tag));
|
|
|
1326 |
gst_buffer_unref (buf);
|
|
|
1327 |
continue;
|
|
|
1328 |
}
|
|
|
1329 |
|
|
|
1330 |
if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
|
|
|
1331 |
continue;
|
|
|
1332 |
if (list) {
|
|
|
1333 |
GST_DEBUG_OBJECT (avi, " adding %5d entries, total %2d %5d",
|
|
|
1334 |
g_list_length (list), g_list_length (*alloc_list),
|
|
|
1335 |
g_list_length (*index));
|
|
|
1336 |
*alloc_list = g_list_append (*alloc_list, list->data);
|
|
|
1337 |
*index = g_list_concat (*index, list);
|
|
|
1338 |
}
|
|
|
1339 |
}
|
|
|
1340 |
|
|
|
1341 |
g_free (stream->indexes);
|
|
|
1342 |
stream->indexes = NULL;
|
|
|
1343 |
}
|
|
|
1344 |
GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
|
|
|
1345 |
}
|
|
|
1346 |
|
|
|
1347 |
/*
|
|
|
1348 |
* gst_avi_demux_riff_parse_vprp:
|
|
|
1349 |
* @element: caller element (used for debugging/error).
|
|
|
1350 |
* @buf: input data to be used for parsing, stripped from header.
|
|
|
1351 |
* @vprp: a pointer (returned by this function) to a filled-in vprp
|
|
|
1352 |
* structure. Caller should free it.
|
|
|
1353 |
*
|
|
|
1354 |
* Parses a video stream´s vprp. This function takes ownership of @buf.
|
|
|
1355 |
*
|
|
|
1356 |
* Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
|
|
|
1357 |
* should be skipped on error, but it is not fatal.
|
|
|
1358 |
*/
|
|
|
1359 |
static gboolean
|
|
|
1360 |
gst_avi_demux_riff_parse_vprp (GstElement * element,
|
|
|
1361 |
GstBuffer * buf, gst_riff_vprp ** _vprp)
|
|
|
1362 |
{
|
|
|
1363 |
gst_riff_vprp *vprp;
|
|
|
1364 |
gint k;
|
|
|
1365 |
|
|
|
1366 |
g_return_val_if_fail (buf != NULL, FALSE);
|
|
|
1367 |
g_return_val_if_fail (_vprp != NULL, FALSE);
|
|
|
1368 |
|
|
|
1369 |
if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
|
|
|
1370 |
goto too_small;
|
|
|
1371 |
|
|
|
1372 |
vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
|
|
|
1373 |
|
|
|
1374 |
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
|
|
1375 |
vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
|
|
|
1376 |
vprp->standard = GUINT32_FROM_LE (vprp->standard);
|
|
|
1377 |
vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
|
|
|
1378 |
vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
|
|
|
1379 |
vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
|
|
|
1380 |
vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
|
|
|
1381 |
vprp->width = GUINT32_FROM_LE (vprp->width);
|
|
|
1382 |
vprp->height = GUINT32_FROM_LE (vprp->height);
|
|
|
1383 |
vprp->fields = GUINT32_FROM_LE (vprp->fields);
|
|
|
1384 |
#endif
|
|
|
1385 |
|
|
|
1386 |
/* size checking */
|
|
|
1387 |
/* calculate fields based on size */
|
|
|
1388 |
k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
|
|
|
1389 |
vprp->fields;
|
|
|
1390 |
if (vprp->fields > k) {
|
|
|
1391 |
GST_WARNING_OBJECT (element,
|
|
|
1392 |
"vprp header indicated %d fields, only %d available", vprp->fields, k);
|
|
|
1393 |
vprp->fields = k;
|
|
|
1394 |
}
|
|
|
1395 |
if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
|
|
|
1396 |
GST_WARNING_OBJECT (element,
|
|
|
1397 |
"vprp header indicated %d fields, at most %d supported", vprp->fields,
|
|
|
1398 |
GST_RIFF_VPRP_VIDEO_FIELDS);
|
|
|
1399 |
vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
|
|
|
1400 |
}
|
|
|
1401 |
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
|
|
1402 |
for (k = 0; k < vprp->fields; k++) {
|
|
|
1403 |
gst_riff_vprp_video_field_desc *fd;
|
|
|
1404 |
|
|
|
1405 |
fd = &vprp->field_info[k];
|
|
|
1406 |
fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
|
|
|
1407 |
fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
|
|
|
1408 |
fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
|
|
|
1409 |
fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
|
|
|
1410 |
fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
|
|
|
1411 |
fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
|
|
|
1412 |
fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
|
|
|
1413 |
fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
|
|
|
1414 |
}
|
|
|
1415 |
#endif
|
|
|
1416 |
|
|
|
1417 |
/* debug */
|
|
|
1418 |
GST_INFO_OBJECT (element, "vprp tag found in context vids:");
|
|
|
1419 |
GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
|
|
|
1420 |
GST_INFO_OBJECT (element, " standard %d", vprp->standard);
|
|
|
1421 |
GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
|
|
|
1422 |
GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
|
|
|
1423 |
GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
|
|
|
1424 |
GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
|
|
|
1425 |
vprp->aspect & 0xffff);
|
|
|
1426 |
GST_INFO_OBJECT (element, " width %d", vprp->width);
|
|
|
1427 |
GST_INFO_OBJECT (element, " height %d", vprp->height);
|
|
|
1428 |
GST_INFO_OBJECT (element, " fields %d", vprp->fields);
|
|
|
1429 |
for (k = 0; k < vprp->fields; k++) {
|
|
|
1430 |
gst_riff_vprp_video_field_desc *fd;
|
|
|
1431 |
|
|
|
1432 |
fd = &(vprp->field_info[k]);
|
|
|
1433 |
GST_INFO_OBJECT (element, " field %u description:", k);
|
|
|
1434 |
GST_INFO_OBJECT (element, " compressed_bm_height %d",
|
|
|
1435 |
fd->compressed_bm_height);
|
|
|
1436 |
GST_INFO_OBJECT (element, " compressed_bm_width %d",
|
|
|
1437 |
fd->compressed_bm_width);
|
|
|
1438 |
GST_INFO_OBJECT (element, " valid_bm_height %d",
|
|
|
1439 |
fd->valid_bm_height);
|
|
|
1440 |
GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
|
|
|
1441 |
GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
|
|
|
1442 |
fd->valid_bm_x_offset);
|
|
|
1443 |
GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
|
|
|
1444 |
fd->valid_bm_y_offset);
|
|
|
1445 |
GST_INFO_OBJECT (element, " video_x_t_offset %d",
|
|
|
1446 |
fd->video_x_t_offset);
|
|
|
1447 |
GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
|
|
|
1448 |
}
|
|
|
1449 |
|
|
|
1450 |
gst_buffer_unref (buf);
|
|
|
1451 |
|
|
|
1452 |
*_vprp = vprp;
|
|
|
1453 |
|
|
|
1454 |
return TRUE;
|
|
|
1455 |
|
|
|
1456 |
/* ERRORS */
|
|
|
1457 |
too_small:
|
|
|
1458 |
{
|
|
|
1459 |
GST_ERROR_OBJECT (element,
|
|
|
1460 |
"Too small vprp (%d available, at least %d needed)",
|
|
|
1461 |
GST_BUFFER_SIZE (buf),
|
|
|
1462 |
(int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
|
|
|
1463 |
gst_buffer_unref (buf);
|
|
|
1464 |
return FALSE;
|
|
|
1465 |
}
|
|
|
1466 |
}
|
|
|
1467 |
|
|
|
1468 |
/*
|
|
|
1469 |
* gst_avi_demux_parse_stream:
|
|
|
1470 |
* @avi: calling element (used for debugging/errors).
|
|
|
1471 |
* @buf: input buffer used to parse the stream.
|
|
|
1472 |
*
|
|
|
1473 |
* Parses all subchunks in a strl chunk (which defines a single
|
|
|
1474 |
* stream). Discards the buffer after use. This function will
|
|
|
1475 |
* increment the stream counter internally.
|
|
|
1476 |
*
|
|
|
1477 |
* Returns: whether the stream was identified successfully.
|
|
|
1478 |
* Errors are not fatal. It does indicate the stream
|
|
|
1479 |
* was skipped.
|
|
|
1480 |
*/
|
|
|
1481 |
static gboolean
|
|
|
1482 |
gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
|
|
|
1483 |
{
|
|
|
1484 |
avi_stream_context *stream;
|
|
|
1485 |
GstElementClass *klass;
|
|
|
1486 |
GstPadTemplate *templ;
|
|
|
1487 |
GstBuffer *sub = NULL;
|
|
|
1488 |
guint offset = 4;
|
|
|
1489 |
guint32 tag = 0;
|
|
|
1490 |
gchar *codec_name = NULL, *padname = NULL;
|
|
|
1491 |
const gchar *tag_name;
|
|
|
1492 |
GstCaps *caps = NULL;
|
|
|
1493 |
GstPad *pad;
|
|
|
1494 |
GstElement *element;
|
|
|
1495 |
gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
|
|
|
1496 |
gst_riff_vprp *vprp = NULL;
|
|
|
1497 |
|
|
|
1498 |
element = GST_ELEMENT_CAST (avi);
|
|
|
1499 |
|
|
|
1500 |
GST_DEBUG_OBJECT (avi, "Parsing stream");
|
|
|
1501 |
|
|
|
1502 |
if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
|
|
|
1503 |
GST_WARNING_OBJECT (avi,
|
|
|
1504 |
"maximum no of streams (%d) exceeded, ignoring stream",
|
|
|
1505 |
GST_AVI_DEMUX_MAX_STREAMS);
|
|
|
1506 |
gst_buffer_unref (buf);
|
|
|
1507 |
/* not a fatal error, let's say */
|
|
|
1508 |
return TRUE;
|
|
|
1509 |
}
|
|
|
1510 |
|
|
|
1511 |
stream = &avi->stream[avi->num_streams];
|
|
|
1512 |
|
|
|
1513 |
/* initial settings */
|
|
|
1514 |
stream->idx_duration = GST_CLOCK_TIME_NONE;
|
|
|
1515 |
stream->hdr_duration = GST_CLOCK_TIME_NONE;
|
|
|
1516 |
stream->duration = GST_CLOCK_TIME_NONE;
|
|
|
1517 |
|
|
|
1518 |
while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
|
|
|
1519 |
/* sub can be NULL if the chunk is empty */
|
|
|
1520 |
if (sub == NULL) {
|
|
|
1521 |
GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
|
|
|
1522 |
GST_FOURCC_ARGS (tag));
|
|
|
1523 |
continue;
|
|
|
1524 |
}
|
|
|
1525 |
switch (tag) {
|
|
|
1526 |
case GST_RIFF_TAG_strh:
|
|
|
1527 |
{
|
|
|
1528 |
gst_riff_strh *strh;
|
|
|
1529 |
|
|
|
1530 |
if (got_strh) {
|
|
|
1531 |
GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
|
|
|
1532 |
break;
|
|
|
1533 |
}
|
|
|
1534 |
if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
|
|
|
1535 |
/* ownership given away */
|
|
|
1536 |
sub = NULL;
|
|
|
1537 |
GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
|
|
|
1538 |
goto fail;
|
|
|
1539 |
}
|
|
|
1540 |
sub = NULL;
|
|
|
1541 |
strh = stream->strh;
|
|
|
1542 |
/* sanity check; stream header frame rate matches global header
|
|
|
1543 |
* frame duration */
|
|
|
1544 |
if (stream->strh->type == GST_RIFF_FCC_vids) {
|
|
|
1545 |
GstClockTime s_dur;
|
|
|
1546 |
GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
|
|
|
1547 |
|
|
|
1548 |
s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
|
|
|
1549 |
GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
|
|
|
1550 |
"frame duration = %d ms", strh->rate, strh->scale,
|
|
|
1551 |
s_dur / GST_MSECOND);
|
|
|
1552 |
if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
|
|
|
1553 |
strh->rate = GST_SECOND / GST_USECOND;
|
|
|
1554 |
strh->scale = h_dur / GST_USECOND;
|
|
|
1555 |
GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
|
|
|
1556 |
strh->rate, strh->scale);
|
|
|
1557 |
}
|
|
|
1558 |
}
|
|
|
1559 |
/* determine duration as indicated by header */
|
|
|
1560 |
stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
|
|
|
1561 |
strh->scale, GST_SECOND, (guint64) strh->rate);
|
|
|
1562 |
GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
|
|
|
1563 |
GST_TIME_ARGS (stream->hdr_duration));
|
|
|
1564 |
if (stream->hdr_duration == 0)
|
|
|
1565 |
stream->hdr_duration = GST_CLOCK_TIME_NONE;
|
|
|
1566 |
|
|
|
1567 |
got_strh = TRUE;
|
|
|
1568 |
break;
|
|
|
1569 |
}
|
|
|
1570 |
case GST_RIFF_TAG_strf:
|
|
|
1571 |
{
|
|
|
1572 |
gboolean res = FALSE;
|
|
|
1573 |
|
|
|
1574 |
if (got_strf) {
|
|
|
1575 |
GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
|
|
|
1576 |
break;
|
|
|
1577 |
}
|
|
|
1578 |
if (!got_strh) {
|
|
|
1579 |
GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
|
|
|
1580 |
goto fail;
|
|
|
1581 |
}
|
|
|
1582 |
switch (stream->strh->type) {
|
|
|
1583 |
case GST_RIFF_FCC_vids:
|
|
|
1584 |
stream->is_vbr = TRUE;
|
|
|
1585 |
res = gst_riff_parse_strf_vids (element, sub,
|
|
|
1586 |
&stream->strf.vids, &stream->extradata);
|
|
|
1587 |
sub = NULL;
|
|
|
1588 |
GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
|
|
|
1589 |
break;
|
|
|
1590 |
case GST_RIFF_FCC_auds:
|
|
|
1591 |
stream->is_vbr = (stream->strh->samplesize == 0)
|
|
|
1592 |
&& stream->strh->scale > 1;
|
|
|
1593 |
res =
|
|
|
1594 |
gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
|
|
|
1595 |
&stream->extradata);
|
|
|
1596 |
sub = NULL;
|
|
|
1597 |
GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
|
|
|
1598 |
stream->is_vbr, res);
|
|
|
1599 |
break;
|
|
|
1600 |
case GST_RIFF_FCC_iavs:
|
|
|
1601 |
stream->is_vbr = TRUE;
|
|
|
1602 |
res = gst_riff_parse_strf_iavs (element, sub,
|
|
|
1603 |
&stream->strf.iavs, &stream->extradata);
|
|
|
1604 |
sub = NULL;
|
|
|
1605 |
GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
|
|
|
1606 |
break;
|
|
|
1607 |
case GST_RIFF_FCC_txts:
|
|
|
1608 |
/* nothing to parse here */
|
|
|
1609 |
stream->is_vbr = (stream->strh->samplesize == 0)
|
|
|
1610 |
&& (stream->strh->scale > 1);
|
|
|
1611 |
res = TRUE;
|
|
|
1612 |
break;
|
|
|
1613 |
default:
|
|
|
1614 |
GST_ERROR_OBJECT (avi,
|
|
|
1615 |
"Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
|
|
|
1616 |
GST_FOURCC_ARGS (stream->strh->type));
|
|
|
1617 |
break;
|
|
|
1618 |
}
|
|
|
1619 |
if (sub) {
|
|
|
1620 |
gst_buffer_unref (sub);
|
|
|
1621 |
sub = NULL;
|
|
|
1622 |
}
|
|
|
1623 |
if (!res)
|
|
|
1624 |
goto fail;
|
|
|
1625 |
got_strf = TRUE;
|
|
|
1626 |
break;
|
|
|
1627 |
}
|
|
|
1628 |
case GST_RIFF_TAG_vprp:
|
|
|
1629 |
{
|
|
|
1630 |
if (got_vprp) {
|
|
|
1631 |
GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
|
|
|
1632 |
break;
|
|
|
1633 |
}
|
|
|
1634 |
if (!got_strh) {
|
|
|
1635 |
GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
|
|
|
1636 |
goto fail;
|
|
|
1637 |
}
|
|
|
1638 |
if (!got_strf) {
|
|
|
1639 |
GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
|
|
|
1640 |
goto fail;
|
|
|
1641 |
}
|
|
|
1642 |
|
|
|
1643 |
if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
|
|
|
1644 |
GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
|
|
|
1645 |
/* not considered fatal */
|
|
|
1646 |
g_free (vprp);
|
|
|
1647 |
vprp = NULL;
|
|
|
1648 |
} else
|
|
|
1649 |
got_vprp = TRUE;
|
|
|
1650 |
sub = NULL;
|
|
|
1651 |
break;
|
|
|
1652 |
}
|
|
|
1653 |
case GST_RIFF_TAG_strd:
|
|
|
1654 |
if (stream->initdata)
|
|
|
1655 |
gst_buffer_unref (stream->initdata);
|
|
|
1656 |
stream->initdata = sub;
|
|
|
1657 |
sub = NULL;
|
|
|
1658 |
break;
|
|
|
1659 |
case GST_RIFF_TAG_strn:
|
|
|
1660 |
g_free (stream->name);
|
|
|
1661 |
if (sub != NULL) {
|
|
|
1662 |
stream->name =
|
|
|
1663 |
g_strndup ((gchar *) GST_BUFFER_DATA (sub),
|
|
|
1664 |
(gsize) GST_BUFFER_SIZE (sub));
|
|
|
1665 |
gst_buffer_unref (sub);
|
|
|
1666 |
sub = NULL;
|
|
|
1667 |
} else {
|
|
|
1668 |
stream->name = g_strdup ("");
|
|
|
1669 |
}
|
|
|
1670 |
GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
|
|
|
1671 |
break;
|
|
|
1672 |
default:
|
|
|
1673 |
if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
|
|
|
1674 |
tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
|
|
|
1675 |
'0' + avi->num_streams % 10)) {
|
|
|
1676 |
g_free (stream->indexes);
|
|
|
1677 |
gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
|
|
|
1678 |
stream->superindex = TRUE;
|
|
|
1679 |
sub = NULL;
|
|
|
1680 |
break;
|
|
|
1681 |
}
|
|
|
1682 |
GST_WARNING_OBJECT (avi,
|
|
|
1683 |
"Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
|
|
|
1684 |
GST_FOURCC_ARGS (tag));
|
|
|
1685 |
/* fall-through */
|
|
|
1686 |
case GST_RIFF_TAG_JUNK:
|
|
|
1687 |
break;
|
|
|
1688 |
}
|
|
|
1689 |
if (sub != NULL) {
|
|
|
1690 |
gst_buffer_unref (sub);
|
|
|
1691 |
sub = NULL;
|
|
|
1692 |
}
|
|
|
1693 |
}
|
|
|
1694 |
|
|
|
1695 |
if (!got_strh) {
|
|
|
1696 |
GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
|
|
|
1697 |
goto fail;
|
|
|
1698 |
}
|
|
|
1699 |
|
|
|
1700 |
if (!got_strf) {
|
|
|
1701 |
GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
|
|
|
1702 |
goto fail;
|
|
|
1703 |
}
|
|
|
1704 |
|
|
|
1705 |
/* get class to figure out the template */
|
|
|
1706 |
klass = GST_ELEMENT_GET_CLASS (avi);
|
|
|
1707 |
|
|
|
1708 |
/* we now have all info, let´s set up a pad and a caps and be done */
|
|
|
1709 |
/* create stream name + pad */
|
|
|
1710 |
switch (stream->strh->type) {
|
|
|
1711 |
case GST_RIFF_FCC_vids:{
|
|
|
1712 |
guint32 fourcc;
|
|
|
1713 |
|
|
|
1714 |
fourcc = (stream->strf.vids->compression) ?
|
|
|
1715 |
stream->strf.vids->compression : stream->strh->fcc_handler;
|
|
|
1716 |
padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
|
|
|
1717 |
templ = gst_element_class_get_pad_template (klass, "video_%02d");
|
|
|
1718 |
caps = gst_riff_create_video_caps (fourcc, stream->strh,
|
|
|
1719 |
stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
|
|
|
1720 |
if (!caps) {
|
|
|
1721 |
caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
|
|
|
1722 |
GST_TYPE_FOURCC, fourcc, NULL);
|
|
|
1723 |
} else if (got_vprp && vprp) {
|
|
|
1724 |
guint32 aspect_n, aspect_d;
|
|
|
1725 |
gint n, d;
|
|
|
1726 |
|
|
|
1727 |
aspect_n = vprp->aspect >> 16;
|
|
|
1728 |
aspect_d = vprp->aspect & 0xffff;
|
|
|
1729 |
/* calculate the pixel aspect ratio using w/h and aspect ratio */
|
|
|
1730 |
n = aspect_n * stream->strf.vids->height;
|
|
|
1731 |
d = aspect_d * stream->strf.vids->width;
|
|
|
1732 |
if (n && d)
|
|
|
1733 |
gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
|
1734 |
n, d, NULL);
|
|
|
1735 |
/* very local, not needed elsewhere */
|
|
|
1736 |
g_free (vprp);
|
|
|
1737 |
vprp = NULL;
|
|
|
1738 |
}
|
|
|
1739 |
tag_name = GST_TAG_VIDEO_CODEC;
|
|
|
1740 |
avi->num_v_streams++;
|
|
|
1741 |
break;
|
|
|
1742 |
}
|
|
|
1743 |
case GST_RIFF_FCC_auds:{
|
|
|
1744 |
padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
|
|
|
1745 |
templ = gst_element_class_get_pad_template (klass, "audio_%02d");
|
|
|
1746 |
caps = gst_riff_create_audio_caps (stream->strf.auds->format,
|
|
|
1747 |
stream->strh, stream->strf.auds, stream->extradata,
|
|
|
1748 |
stream->initdata, &codec_name);
|
|
|
1749 |
if (!caps) {
|
|
|
1750 |
caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
|
|
|
1751 |
G_TYPE_INT, stream->strf.auds->format, NULL);
|
|
|
1752 |
}
|
|
|
1753 |
tag_name = GST_TAG_AUDIO_CODEC;
|
|
|
1754 |
avi->num_a_streams++;
|
|
|
1755 |
break;
|
|
|
1756 |
}
|
|
|
1757 |
case GST_RIFF_FCC_iavs:{
|
|
|
1758 |
guint32 fourcc = stream->strh->fcc_handler;
|
|
|
1759 |
|
|
|
1760 |
padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
|
|
|
1761 |
templ = gst_element_class_get_pad_template (klass, "video_%02d");
|
|
|
1762 |
caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
|
|
|
1763 |
stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
|
|
|
1764 |
if (!caps) {
|
|
|
1765 |
caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
|
|
|
1766 |
GST_TYPE_FOURCC, fourcc, NULL);
|
|
|
1767 |
}
|
|
|
1768 |
tag_name = GST_TAG_VIDEO_CODEC;
|
|
|
1769 |
avi->num_v_streams++;
|
|
|
1770 |
break;
|
|
|
1771 |
}
|
|
|
1772 |
case GST_RIFF_FCC_txts:{
|
|
|
1773 |
padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
|
|
|
1774 |
templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
|
|
|
1775 |
caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
|
|
|
1776 |
tag_name = NULL;
|
|
|
1777 |
avi->num_t_streams++;
|
|
|
1778 |
break;
|
|
|
1779 |
}
|
|
|
1780 |
default:
|
|
|
1781 |
g_assert_not_reached ();
|
|
|
1782 |
}
|
|
|
1783 |
|
|
|
1784 |
/* no caps means no stream */
|
|
|
1785 |
if (!caps) {
|
|
|
1786 |
GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
|
|
|
1787 |
goto fail;
|
|
|
1788 |
}
|
|
|
1789 |
|
|
|
1790 |
GST_DEBUG_OBJECT (element, "codec-name=%s",
|
|
|
1791 |
(codec_name ? codec_name : "NULL"));
|
|
|
1792 |
GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
|
|
|
1793 |
|
|
|
1794 |
/* set proper settings and add it */
|
|
|
1795 |
if (stream->pad)
|
|
|
1796 |
gst_object_unref (stream->pad);
|
|
|
1797 |
pad = stream->pad = gst_pad_new_from_template (templ, padname);
|
|
|
1798 |
stream->last_flow = GST_FLOW_OK;
|
|
|
1799 |
stream->discont = TRUE;
|
|
|
1800 |
g_free (padname);
|
|
|
1801 |
|
|
|
1802 |
gst_pad_use_fixed_caps (pad);
|
|
|
1803 |
#if 0
|
|
|
1804 |
gst_pad_set_formats_function (pad,
|
|
|
1805 |
GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
|
|
|
1806 |
gst_pad_set_event_mask_function (pad,
|
|
|
1807 |
GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
|
|
|
1808 |
#endif
|
|
|
1809 |
gst_pad_set_event_function (pad,
|
|
|
1810 |
GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
|
|
|
1811 |
gst_pad_set_query_type_function (pad,
|
|
|
1812 |
GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
|
|
|
1813 |
gst_pad_set_query_function (pad,
|
|
|
1814 |
GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
|
|
|
1815 |
#if 0
|
|
|
1816 |
gst_pad_set_convert_function (pad,
|
|
|
1817 |
GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
|
|
|
1818 |
#endif
|
|
|
1819 |
|
|
|
1820 |
stream->num = avi->num_streams;
|
|
|
1821 |
stream->total_bytes = 0;
|
|
|
1822 |
stream->total_frames = 0;
|
|
|
1823 |
stream->total_blocks = 0;
|
|
|
1824 |
stream->current_frame = 0;
|
|
|
1825 |
stream->current_byte = 0;
|
|
|
1826 |
gst_pad_set_element_private (pad, stream);
|
|
|
1827 |
avi->num_streams++;
|
|
|
1828 |
gst_pad_set_caps (pad, caps);
|
|
|
1829 |
gst_pad_set_active (pad, TRUE);
|
|
|
1830 |
gst_element_add_pad (GST_ELEMENT (avi), pad);
|
|
|
1831 |
GST_LOG_OBJECT (element, "Added pad %s with caps %" GST_PTR_FORMAT,
|
|
|
1832 |
GST_PAD_NAME (pad), caps);
|
|
|
1833 |
gst_caps_unref (caps);
|
|
|
1834 |
|
|
|
1835 |
/* make tags */
|
|
|
1836 |
if (codec_name) {
|
|
|
1837 |
if (!stream->taglist)
|
|
|
1838 |
stream->taglist = gst_tag_list_new ();
|
|
|
1839 |
|
|
|
1840 |
avi->got_tags = TRUE;
|
|
|
1841 |
|
|
|
1842 |
gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
|
|
|
1843 |
codec_name, NULL);
|
|
|
1844 |
g_free (codec_name);
|
|
|
1845 |
}
|
|
|
1846 |
|
|
|
1847 |
gst_buffer_unref (buf);
|
|
|
1848 |
|
|
|
1849 |
return TRUE;
|
|
|
1850 |
|
|
|
1851 |
/* ERRORS */
|
|
|
1852 |
fail:
|
|
|
1853 |
{
|
|
|
1854 |
/* unref any mem that may be in use */
|
|
|
1855 |
if (buf)
|
|
|
1856 |
gst_buffer_unref (buf);
|
|
|
1857 |
if (sub)
|
|
|
1858 |
gst_buffer_unref (sub);
|
|
|
1859 |
g_free (vprp);
|
|
|
1860 |
g_free (codec_name);
|
|
|
1861 |
g_free (stream->strh);
|
|
|
1862 |
g_free (stream->strf.data);
|
|
|
1863 |
g_free (stream->name);
|
|
|
1864 |
g_free (stream->indexes);
|
|
|
1865 |
if (stream->initdata)
|
|
|
1866 |
gst_buffer_unref (stream->initdata);
|
|
|
1867 |
if (stream->extradata)
|
|
|
1868 |
gst_buffer_unref (stream->extradata);
|
|
|
1869 |
memset (stream, 0, sizeof (avi_stream_context));
|
|
|
1870 |
avi->num_streams++;
|
|
|
1871 |
return FALSE;
|
|
|
1872 |
}
|
|
|
1873 |
}
|
|
|
1874 |
|
|
|
1875 |
/*
|
|
|
1876 |
* gst_avi_demux_parse_odml:
|
|
|
1877 |
* @avi: calling element (used for debug/error).
|
|
|
1878 |
* @buf: input buffer to be used for parsing.
|
|
|
1879 |
*
|
|
|
1880 |
* Read an openDML-2.0 extension header. Fills in the frame number
|
|
|
1881 |
* in the avi demuxer object when reading succeeds.
|
|
|
1882 |
*/
|
|
|
1883 |
static void
|
|
|
1884 |
gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
|
|
|
1885 |
{
|
|
|
1886 |
guint32 tag = 0;
|
|
|
1887 |
guint offset = 4;
|
|
|
1888 |
GstBuffer *sub = NULL;
|
|
|
1889 |
|
|
|
1890 |
while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
|
|
|
1891 |
&sub)) {
|
|
|
1892 |
switch (tag) {
|
|
|
1893 |
case GST_RIFF_TAG_dmlh:{
|
|
|
1894 |
gst_riff_dmlh dmlh, *_dmlh;
|
|
|
1895 |
guint size;
|
|
|
1896 |
|
|
|
1897 |
/* sub == NULL is possible and means an empty buffer */
|
|
|
1898 |
size = sub ? GST_BUFFER_SIZE (sub) : 0;
|
|
|
1899 |
|
|
|
1900 |
/* check size */
|
|
|
1901 |
if (size < sizeof (gst_riff_dmlh)) {
|
|
|
1902 |
GST_ERROR_OBJECT (avi,
|
|
|
1903 |
"DMLH entry is too small (%d bytes, %d needed)",
|
|
|
1904 |
size, (int) sizeof (gst_riff_dmlh));
|
|
|
1905 |
goto next;
|
|
|
1906 |
}
|
|
|
1907 |
_dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
|
|
|
1908 |
dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
|
|
|
1909 |
|
|
|
1910 |
GST_INFO_OBJECT (avi, "dmlh tag found:");
|
|
|
1911 |
GST_INFO_OBJECT (avi, " totalframes: %u", dmlh.totalframes);
|
|
|
1912 |
|
|
|
1913 |
avi->avih->tot_frames = dmlh.totalframes;
|
|
|
1914 |
goto next;
|
|
|
1915 |
}
|
|
|
1916 |
|
|
|
1917 |
default:
|
|
|
1918 |
GST_WARNING_OBJECT (avi,
|
|
|
1919 |
"Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
|
|
|
1920 |
GST_FOURCC_ARGS (tag));
|
|
|
1921 |
/* fall-through */
|
|
|
1922 |
case GST_RIFF_TAG_JUNK:
|
|
|
1923 |
next:
|
|
|
1924 |
/* skip and move to next chunk */
|
|
|
1925 |
if (sub) {
|
|
|
1926 |
gst_buffer_unref (sub);
|
|
|
1927 |
sub = NULL;
|
|
|
1928 |
}
|
|
|
1929 |
break;
|
|
|
1930 |
}
|
|
|
1931 |
}
|
|
|
1932 |
if (buf)
|
|
|
1933 |
gst_buffer_unref (buf);
|
|
|
1934 |
}
|
|
|
1935 |
|
|
|
1936 |
/*
|
|
|
1937 |
* Sort helper for index entries that sorts by index time.
|
|
|
1938 |
* If times are equal we sort by stream number.
|
|
|
1939 |
*/
|
|
|
1940 |
static gint
|
|
|
1941 |
sort (gst_avi_index_entry * a, gst_avi_index_entry * b)
|
|
|
1942 |
{
|
|
|
1943 |
if (a->ts > b->ts)
|
|
|
1944 |
return 1;
|
|
|
1945 |
else if (a->ts < b->ts)
|
|
|
1946 |
return -1;
|
|
|
1947 |
else
|
|
|
1948 |
return a->stream_nr - b->stream_nr;
|
|
|
1949 |
}
|
|
|
1950 |
|
|
|
1951 |
/*
|
|
|
1952 |
* gst_avi_demux_parse_index:
|
|
|
1953 |
* @avi: calling element (used for debugging/errors).
|
|
|
1954 |
* @buf: buffer containing the full index.
|
|
|
1955 |
* @entries_list: list (returned by this function) containing the index
|
|
|
1956 |
* entries parsed from the buffer. The first in the list
|
|
|
1957 |
* is also a pointer to the allocated data and should be
|
|
|
1958 |
* free'ed at some point.
|
|
|
1959 |
*
|
|
|
1960 |
* Read index entries from the provided buffer. Takes ownership of @buf.
|
|
|
1961 |
*/
|
|
|
1962 |
static void
|
|
|
1963 |
gst_avi_demux_parse_index (GstAviDemux * avi,
|
|
|
1964 |
GstBuffer * buf, GList ** _entries_list)
|
|
|
1965 |
{
|
|
|
1966 |
guint64 pos_before = avi->offset;
|
|
|
1967 |
gst_avi_index_entry *entries = NULL;
|
|
|
1968 |
guint8 *data;
|
|
|
1969 |
GList *entries_list = NULL;
|
|
|
1970 |
guint i, num, n;
|
|
|
1971 |
|
|
|
1972 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
1973 |
gulong _nr_keyframes = 0;
|
|
|
1974 |
#endif
|
|
|
1975 |
|
|
|
1976 |
if (!buf || !GST_BUFFER_SIZE (buf)) {
|
|
|
1977 |
*_entries_list = NULL;
|
|
|
1978 |
GST_DEBUG ("empty index");
|
|
|
1979 |
if (buf)
|
|
|
1980 |
gst_buffer_unref (buf);
|
|
|
1981 |
return;
|
|
|
1982 |
}
|
|
|
1983 |
|
|
|
1984 |
data = GST_BUFFER_DATA (buf);
|
|
|
1985 |
num = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
|
|
|
1986 |
if (!(entries = g_try_new (gst_avi_index_entry, num)))
|
|
|
1987 |
goto out_of_mem;
|
|
|
1988 |
|
|
|
1989 |
GST_INFO ("Parsing index, nr_entries = %6d", num);
|
|
|
1990 |
|
|
|
1991 |
for (i = 0, n = 0; i < num; i++) {
|
|
|
1992 |
gint64 next_ts;
|
|
|
1993 |
gst_riff_index_entry entry, *_entry;
|
|
|
1994 |
avi_stream_context *stream;
|
|
|
1995 |
guint stream_nr;
|
|
|
1996 |
gst_avi_index_entry *target;
|
|
|
1997 |
|
|
|
1998 |
_entry = &((gst_riff_index_entry *) data)[i];
|
|
|
1999 |
entry.id = GST_READ_UINT32_LE (&_entry->id);
|
|
|
2000 |
entry.offset = GST_READ_UINT32_LE (&_entry->offset);
|
|
|
2001 |
entry.flags = GST_READ_UINT32_LE (&_entry->flags);
|
|
|
2002 |
entry.size = GST_READ_UINT32_LE (&_entry->size);
|
|
|
2003 |
target = &entries[n];
|
|
|
2004 |
|
|
|
2005 |
if (entry.id == GST_RIFF_rec || entry.id == 0 ||
|
|
|
2006 |
(entry.offset == 0 && n > 0))
|
|
|
2007 |
continue;
|
|
|
2008 |
|
|
|
2009 |
stream_nr = CHUNKID_TO_STREAMNR (entry.id);
|
|
|
2010 |
if (stream_nr >= avi->num_streams) {
|
|
|
2011 |
GST_WARNING_OBJECT (avi,
|
|
|
2012 |
"Index entry %d has invalid stream nr %d", i, stream_nr);
|
|
|
2013 |
continue;
|
|
|
2014 |
}
|
|
|
2015 |
target->stream_nr = stream_nr;
|
|
|
2016 |
stream = &avi->stream[stream_nr];
|
|
|
2017 |
|
|
|
2018 |
if (!stream->strh) {
|
|
|
2019 |
GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
|
|
|
2020 |
continue;
|
|
|
2021 |
}
|
|
|
2022 |
|
|
|
2023 |
target->index_nr = i;
|
|
|
2024 |
target->flags =
|
|
|
2025 |
(entry.flags & GST_RIFF_IF_KEYFRAME) ? GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME
|
|
|
2026 |
: 0;
|
|
|
2027 |
target->size = entry.size;
|
|
|
2028 |
target->offset = entry.offset + 8;
|
|
|
2029 |
|
|
|
2030 |
/* figure out if the index is 0 based or relative to the MOVI start */
|
|
|
2031 |
if (n == 0) {
|
|
|
2032 |
if (target->offset < pos_before)
|
|
|
2033 |
avi->index_offset = pos_before + 8;
|
|
|
2034 |
else
|
|
|
2035 |
avi->index_offset = 0;
|
|
|
2036 |
GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
|
|
|
2037 |
}
|
|
|
2038 |
|
|
|
2039 |
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
2040 |
/* all audio frames are keyframes */
|
|
|
2041 |
target->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
|
|
2042 |
}
|
|
|
2043 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2044 |
if (target->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
|
|
|
2045 |
_nr_keyframes++;
|
|
|
2046 |
#endif
|
|
|
2047 |
|
|
|
2048 |
/* stream duration unknown, now we can calculate it */
|
|
|
2049 |
if (stream->idx_duration == -1)
|
|
|
2050 |
stream->idx_duration = 0;
|
|
|
2051 |
|
|
|
2052 |
/* timestamps */
|
|
|
2053 |
target->ts = stream->idx_duration;
|
|
|
2054 |
if (stream->is_vbr) {
|
|
|
2055 |
/* VBR stream next timestamp */
|
|
|
2056 |
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
2057 |
next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
2058 |
stream->total_blocks + 1);
|
|
|
2059 |
} else {
|
|
|
2060 |
next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
2061 |
stream->total_frames + 1);
|
|
|
2062 |
}
|
|
|
2063 |
} else {
|
|
|
2064 |
/* constant rate stream */
|
|
|
2065 |
next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
2066 |
stream->total_bytes + target->size);
|
|
|
2067 |
}
|
|
|
2068 |
/* duration is next - current */
|
|
|
2069 |
target->dur = next_ts - target->ts;
|
|
|
2070 |
|
|
|
2071 |
/* stream position */
|
|
|
2072 |
target->bytes_before = stream->total_bytes;
|
|
|
2073 |
target->frames_before = stream->total_frames;
|
|
|
2074 |
|
|
|
2075 |
stream->total_bytes += target->size;
|
|
|
2076 |
stream->total_frames++;
|
|
|
2077 |
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
2078 |
if (stream->strf.auds->blockalign > 0)
|
|
|
2079 |
stream->total_blocks +=
|
|
|
2080 |
(target->size + stream->strf.auds->blockalign -
|
|
|
2081 |
1) / stream->strf.auds->blockalign;
|
|
|
2082 |
else
|
|
|
2083 |
stream->total_blocks++;
|
|
|
2084 |
}
|
|
|
2085 |
stream->idx_duration = next_ts;
|
|
|
2086 |
|
|
|
2087 |
GST_LOG_OBJECT (avi,
|
|
|
2088 |
"Adding index entry %d (%6u), flags %02x, stream %d, size %u "
|
|
|
2089 |
", offset %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT ", dur %"
|
|
|
2090 |
GST_TIME_FORMAT,
|
|
|
2091 |
target->index_nr, stream->total_frames - 1, target->flags,
|
|
|
2092 |
target->stream_nr, target->size, target->offset,
|
|
|
2093 |
GST_TIME_ARGS (target->ts), GST_TIME_ARGS (target->dur));
|
|
|
2094 |
entries_list = g_list_prepend (entries_list, target);
|
|
|
2095 |
|
|
|
2096 |
n++;
|
|
|
2097 |
}
|
|
|
2098 |
|
|
|
2099 |
GST_INFO ("Parsed index, %6d entries, %5ld keyframes, entry size = %2d, "
|
|
|
2100 |
"total size = %10d", num, _nr_keyframes,
|
|
|
2101 |
(gint) sizeof (gst_avi_index_entry),
|
|
|
2102 |
(gint) (num * sizeof (gst_avi_index_entry)));
|
|
|
2103 |
|
|
|
2104 |
gst_buffer_unref (buf);
|
|
|
2105 |
|
|
|
2106 |
if (n > 0) {
|
|
|
2107 |
*_entries_list = g_list_reverse (entries_list);
|
|
|
2108 |
} else {
|
|
|
2109 |
g_free (entries);
|
|
|
2110 |
}
|
|
|
2111 |
return;
|
|
|
2112 |
|
|
|
2113 |
/* ERRORS */
|
|
|
2114 |
out_of_mem:
|
|
|
2115 |
{
|
|
|
2116 |
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
|
|
2117 |
("Cannot allocate memory for %u*%u=%u bytes",
|
|
|
2118 |
(guint) sizeof (gst_avi_index_entry), num,
|
|
|
2119 |
(guint) sizeof (gst_avi_index_entry) * num));
|
|
|
2120 |
gst_buffer_unref (buf);
|
|
|
2121 |
}
|
|
|
2122 |
}
|
|
|
2123 |
|
|
|
2124 |
/*
|
|
|
2125 |
* gst_avi_demux_stream_index:
|
|
|
2126 |
* @avi: avi demuxer object.
|
|
|
2127 |
* @index: list of index entries, returned by this function.
|
|
|
2128 |
* @alloc_list: list of allocated data, returned by this function.
|
|
|
2129 |
*
|
|
|
2130 |
* Seeks to index and reads it.
|
|
|
2131 |
*/
|
|
|
2132 |
static void
|
|
|
2133 |
gst_avi_demux_stream_index (GstAviDemux * avi,
|
|
|
2134 |
GList ** index, GList ** alloc_list)
|
|
|
2135 |
{
|
|
|
2136 |
GstFlowReturn res;
|
|
|
2137 |
guint64 offset = avi->offset;
|
|
|
2138 |
GstBuffer *buf;
|
|
|
2139 |
guint32 tag;
|
|
|
2140 |
guint32 size;
|
|
|
2141 |
gint i;
|
|
|
2142 |
|
|
|
2143 |
GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
|
|
|
2144 |
|
|
|
2145 |
*alloc_list = NULL;
|
|
|
2146 |
*index = NULL;
|
|
|
2147 |
|
|
|
2148 |
/* get chunk information */
|
|
|
2149 |
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
|
|
2150 |
if (res != GST_FLOW_OK)
|
|
|
2151 |
goto pull_failed;
|
|
|
2152 |
else if (GST_BUFFER_SIZE (buf) < 8)
|
|
|
2153 |
goto too_small;
|
|
|
2154 |
|
|
|
2155 |
/* check tag first before blindy trying to read 'size' bytes */
|
|
|
2156 |
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
|
|
2157 |
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
|
|
2158 |
if (tag == GST_RIFF_TAG_LIST) {
|
|
|
2159 |
/* this is the movi tag */
|
|
|
2160 |
GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
|
|
|
2161 |
(8 + ((size + 1) & ~1)));
|
|
|
2162 |
offset += 8 + ((size + 1) & ~1);
|
|
|
2163 |
gst_buffer_unref (buf);
|
|
|
2164 |
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
|
|
2165 |
if (res != GST_FLOW_OK)
|
|
|
2166 |
goto pull_failed;
|
|
|
2167 |
else if (GST_BUFFER_SIZE (buf) < 8)
|
|
|
2168 |
goto too_small;
|
|
|
2169 |
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
|
|
2170 |
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
|
|
2171 |
}
|
|
|
2172 |
|
|
|
2173 |
if (tag != GST_RIFF_TAG_idx1)
|
|
|
2174 |
goto no_index;
|
|
|
2175 |
if (!size)
|
|
|
2176 |
goto zero_index;
|
|
|
2177 |
|
|
|
2178 |
gst_buffer_unref (buf);
|
|
|
2179 |
|
|
|
2180 |
GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
|
|
|
2181 |
|
|
|
2182 |
/* read chunk, advance offset */
|
|
|
2183 |
if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
|
|
|
2184 |
avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
|
|
|
2185 |
return;
|
|
|
2186 |
|
|
|
2187 |
GST_INFO ("will parse index chunk size %u for tag %"
|
|
|
2188 |
GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
|
|
|
2189 |
|
|
|
2190 |
gst_avi_demux_parse_index (avi, buf, index);
|
|
|
2191 |
if (*index)
|
|
|
2192 |
*alloc_list = g_list_append (*alloc_list, (*index)->data);
|
|
|
2193 |
|
|
|
2194 |
/* debug our indexes */
|
|
|
2195 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
2196 |
avi_stream_context *stream;
|
|
|
2197 |
|
|
|
2198 |
stream = &avi->stream[i];
|
|
|
2199 |
GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
|
|
|
2200 |
i, stream->total_frames, stream->total_bytes);
|
|
|
2201 |
}
|
|
|
2202 |
return;
|
|
|
2203 |
|
|
|
2204 |
/* ERRORS */
|
|
|
2205 |
pull_failed:
|
|
|
2206 |
{
|
|
|
2207 |
GST_DEBUG_OBJECT (avi,
|
|
|
2208 |
"pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
|
|
|
2209 |
return;
|
|
|
2210 |
}
|
|
|
2211 |
too_small:
|
|
|
2212 |
{
|
|
|
2213 |
GST_DEBUG_OBJECT (avi, "Buffer is too small");
|
|
|
2214 |
gst_buffer_unref (buf);
|
|
|
2215 |
return;
|
|
|
2216 |
}
|
|
|
2217 |
no_index:
|
|
|
2218 |
{
|
|
|
2219 |
GST_WARNING_OBJECT (avi,
|
|
|
2220 |
"No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
|
|
|
2221 |
GST_FOURCC_ARGS (tag));
|
|
|
2222 |
gst_buffer_unref (buf);
|
|
|
2223 |
return;
|
|
|
2224 |
}
|
|
|
2225 |
zero_index:
|
|
|
2226 |
{
|
|
|
2227 |
GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
|
|
|
2228 |
gst_buffer_unref (buf);
|
|
|
2229 |
return;
|
|
|
2230 |
}
|
|
|
2231 |
}
|
|
|
2232 |
|
|
|
2233 |
#if 0
|
|
|
2234 |
/*
|
|
|
2235 |
* Sync to next data chunk.
|
|
|
2236 |
*/
|
|
|
2237 |
static gboolean
|
|
|
2238 |
gst_avi_demux_skip (GstAviDemux * avi, gboolean prevent_eos)
|
|
|
2239 |
{
|
|
|
2240 |
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
|
2241 |
|
|
|
2242 |
if (prevent_eos) {
|
|
|
2243 |
guint64 pos, length;
|
|
|
2244 |
guint size;
|
|
|
2245 |
guint8 *data;
|
|
|
2246 |
|
|
|
2247 |
pos = gst_bytestream_tell (riff->bs);
|
|
|
2248 |
length = gst_bytestream_length (riff->bs);
|
|
|
2249 |
|
|
|
2250 |
if (pos + 8 > length)
|
|
|
2251 |
return FALSE;
|
|
|
2252 |
|
|
|
2253 |
if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
|
|
|
2254 |
return FALSE;
|
|
|
2255 |
|
|
|
2256 |
size = GST_READ_UINT32_LE (&data[4]);
|
|
|
2257 |
if (size & 1)
|
|
|
2258 |
size++;
|
|
|
2259 |
|
|
|
2260 |
/* Note, we're going to skip which might involve seeks. Therefore,
|
|
|
2261 |
* we need 1 byte more! */
|
|
|
2262 |
if (pos + 8 + size >= length)
|
|
|
2263 |
return FALSE;
|
|
|
2264 |
}
|
|
|
2265 |
|
|
|
2266 |
return gst_riff_read_skip (riff);
|
|
|
2267 |
}
|
|
|
2268 |
|
|
|
2269 |
static gboolean
|
|
|
2270 |
gst_avi_demux_sync (GstAviDemux * avi, guint32 * ret_tag, gboolean prevent_eos)
|
|
|
2271 |
{
|
|
|
2272 |
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
|
2273 |
guint32 tag;
|
|
|
2274 |
guint64 length = gst_bytestream_length (riff->bs);
|
|
|
2275 |
|
|
|
2276 |
if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
|
|
|
2277 |
return FALSE;
|
|
|
2278 |
|
|
|
2279 |
/* peek first (for the end of this 'list/movi' section) */
|
|
|
2280 |
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
|
|
2281 |
return FALSE;
|
|
|
2282 |
|
|
|
2283 |
/* if we're at top-level, we didn't read the 'movi'
|
|
|
2284 |
* list tag yet. This can also be 'AVIX' in case of
|
|
|
2285 |
* openDML-2.0 AVI files. Lastly, it might be idx1,
|
|
|
2286 |
* in which case we skip it so we come at EOS. */
|
|
|
2287 |
while (1) {
|
|
|
2288 |
if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
|
|
|
2289 |
return FALSE;
|
|
|
2290 |
|
|
|
2291 |
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
|
2292 |
return FALSE;
|
|
|
2293 |
|
|
|
2294 |
switch (tag) {
|
|
|
2295 |
case GST_RIFF_TAG_LIST:
|
|
|
2296 |
if (!(tag = gst_riff_peek_list (riff)))
|
|
|
2297 |
return FALSE;
|
|
|
2298 |
|
|
|
2299 |
switch (tag) {
|
|
|
2300 |
case GST_RIFF_LIST_AVIX:
|
|
|
2301 |
if (!gst_riff_read_list (riff, &tag))
|
|
|
2302 |
return FALSE;
|
|
|
2303 |
break;
|
|
|
2304 |
|
|
|
2305 |
case GST_RIFF_LIST_movi:
|
|
|
2306 |
if (!gst_riff_read_list (riff, &tag))
|
|
|
2307 |
return FALSE;
|
|
|
2308 |
/* fall-through */
|
|
|
2309 |
|
|
|
2310 |
case GST_RIFF_rec:
|
|
|
2311 |
goto done;
|
|
|
2312 |
|
|
|
2313 |
default:
|
|
|
2314 |
GST_WARNING ("Unknown list %" GST_FOURCC_FORMAT " before AVI data",
|
|
|
2315 |
GST_FOURCC_ARGS (tag));
|
|
|
2316 |
/* fall-through */
|
|
|
2317 |
|
|
|
2318 |
case GST_RIFF_TAG_JUNK:
|
|
|
2319 |
if (!gst_avi_demux_skip (avi, prevent_eos))
|
|
|
2320 |
return FALSE;
|
|
|
2321 |
break;
|
|
|
2322 |
}
|
|
|
2323 |
break;
|
|
|
2324 |
|
|
|
2325 |
default:
|
|
|
2326 |
if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
|
|
|
2327 |
((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
|
|
|
2328 |
goto done;
|
|
|
2329 |
}
|
|
|
2330 |
/* pass-through */
|
|
|
2331 |
|
|
|
2332 |
case GST_RIFF_TAG_idx1:
|
|
|
2333 |
case GST_RIFF_TAG_JUNK:
|
|
|
2334 |
if (!gst_avi_demux_skip (avi, prevent_eos)) {
|
|
|
2335 |
return FALSE;
|
|
|
2336 |
}
|
|
|
2337 |
break;
|
|
|
2338 |
}
|
|
|
2339 |
}
|
|
|
2340 |
done:
|
|
|
2341 |
/* And then, we get the data */
|
|
|
2342 |
if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
|
|
|
2343 |
return FALSE;
|
|
|
2344 |
|
|
|
2345 |
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
|
2346 |
return FALSE;
|
|
|
2347 |
|
|
|
2348 |
/* Support for rec-list files */
|
|
|
2349 |
switch (tag) {
|
|
|
2350 |
case GST_RIFF_TAG_LIST:
|
|
|
2351 |
if (!(tag = gst_riff_peek_list (riff)))
|
|
|
2352 |
return FALSE;
|
|
|
2353 |
if (tag == GST_RIFF_rec) {
|
|
|
2354 |
/* Simply skip the list */
|
|
|
2355 |
if (!gst_riff_read_list (riff, &tag))
|
|
|
2356 |
return FALSE;
|
|
|
2357 |
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
|
2358 |
return FALSE;
|
|
|
2359 |
}
|
|
|
2360 |
break;
|
|
|
2361 |
|
|
|
2362 |
case GST_RIFF_TAG_JUNK:
|
|
|
2363 |
gst_avi_demux_skip (avi, prevent_eos);
|
|
|
2364 |
return FALSE;
|
|
|
2365 |
}
|
|
|
2366 |
|
|
|
2367 |
if (ret_tag)
|
|
|
2368 |
*ret_tag = tag;
|
|
|
2369 |
|
|
|
2370 |
return TRUE;
|
|
|
2371 |
}
|
|
|
2372 |
#endif
|
|
|
2373 |
|
|
|
2374 |
/*
|
|
|
2375 |
* gst_avi_demux_peek_tag:
|
|
|
2376 |
*
|
|
|
2377 |
* Returns the tag and size of the next chunk
|
|
|
2378 |
*/
|
|
|
2379 |
static GstFlowReturn
|
|
|
2380 |
gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
|
|
|
2381 |
guint * size)
|
|
|
2382 |
{
|
|
|
2383 |
GstFlowReturn res = GST_FLOW_OK;
|
|
|
2384 |
GstBuffer *buf = NULL;
|
|
|
2385 |
guint bufsize;
|
|
|
2386 |
|
|
|
2387 |
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
|
|
2388 |
if (res != GST_FLOW_OK)
|
|
|
2389 |
goto pull_failed;
|
|
|
2390 |
|
|
|
2391 |
bufsize = GST_BUFFER_SIZE (buf);
|
|
|
2392 |
if (bufsize != 8)
|
|
|
2393 |
goto wrong_size;
|
|
|
2394 |
|
|
|
2395 |
*tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
|
|
2396 |
*size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
|
|
2397 |
|
|
|
2398 |
GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
|
|
|
2399 |
G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
|
|
|
2400 |
*size, offset + 8, offset + 8 + (gint64) * size);
|
|
|
2401 |
done:
|
|
|
2402 |
gst_buffer_unref (buf);
|
|
|
2403 |
|
|
|
2404 |
return res;
|
|
|
2405 |
|
|
|
2406 |
/* ERRORS */
|
|
|
2407 |
pull_failed:
|
|
|
2408 |
{
|
|
|
2409 |
GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
|
|
|
2410 |
return res;
|
|
|
2411 |
}
|
|
|
2412 |
wrong_size:
|
|
|
2413 |
{
|
|
|
2414 |
GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
|
|
|
2415 |
res = GST_FLOW_ERROR;
|
|
|
2416 |
goto done;
|
|
|
2417 |
}
|
|
|
2418 |
}
|
|
|
2419 |
|
|
|
2420 |
/*
|
|
|
2421 |
* gst_avi_demux_next_data_buffer:
|
|
|
2422 |
*
|
|
|
2423 |
* Returns the offset and size of the next buffer
|
|
|
2424 |
* Position is the position of the buffer (after tag and size)
|
|
|
2425 |
*/
|
|
|
2426 |
static GstFlowReturn
|
|
|
2427 |
gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
|
|
|
2428 |
guint32 * tag, guint * size)
|
|
|
2429 |
{
|
|
|
2430 |
guint64 off = *offset;
|
|
|
2431 |
guint _size = 0;
|
|
|
2432 |
GstFlowReturn res;
|
|
|
2433 |
|
|
|
2434 |
do {
|
|
|
2435 |
res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
|
|
|
2436 |
if (res != GST_FLOW_OK)
|
|
|
2437 |
break;
|
|
|
2438 |
if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
|
|
|
2439 |
off += 8 + 4; /* skip tag + size + subtag */
|
|
|
2440 |
else {
|
|
|
2441 |
*offset = off + 8;
|
|
|
2442 |
*size = _size;
|
|
|
2443 |
break;
|
|
|
2444 |
}
|
|
|
2445 |
} while (TRUE);
|
|
|
2446 |
|
|
|
2447 |
return res;
|
|
|
2448 |
}
|
|
|
2449 |
|
|
|
2450 |
/*
|
|
|
2451 |
* gst_avi_demux_stream_scan:
|
|
|
2452 |
* @avi: calling element (used for debugging/errors).
|
|
|
2453 |
* @index: list of index entries, returned by this function.
|
|
|
2454 |
* @alloc_list: list of allocated data, returned by this function.
|
|
|
2455 |
*
|
|
|
2456 |
* Scan the file for all chunks to "create" a new index.
|
|
|
2457 |
* Return value indicates if we can continue reading the stream. It
|
|
|
2458 |
* does not say anything about whether we created an index.
|
|
|
2459 |
*
|
|
|
2460 |
* pull-range based
|
|
|
2461 |
*/
|
|
|
2462 |
static gboolean
|
|
|
2463 |
gst_avi_demux_stream_scan (GstAviDemux * avi,
|
|
|
2464 |
GList ** index, GList ** alloc_list)
|
|
|
2465 |
{
|
|
|
2466 |
GstFlowReturn res;
|
|
|
2467 |
gst_avi_index_entry *entry, *entries = NULL;
|
|
|
2468 |
avi_stream_context *stream;
|
|
|
2469 |
GstFormat format;
|
|
|
2470 |
guint64 pos = avi->offset;
|
|
|
2471 |
guint64 length;
|
|
|
2472 |
gint64 tmplength;
|
|
|
2473 |
guint32 tag = 0;
|
|
|
2474 |
GList *list = NULL;
|
|
|
2475 |
guint index_size = 0;
|
|
|
2476 |
|
|
|
2477 |
/* FIXME:
|
|
|
2478 |
* - implement non-seekable source support.
|
|
|
2479 |
*/
|
|
|
2480 |
GST_DEBUG_OBJECT (avi,
|
|
|
2481 |
"Creating index %s existing index, starting at offset %" G_GUINT64_FORMAT,
|
|
|
2482 |
((*index) ? "with" : "without"), pos);
|
|
|
2483 |
|
|
|
2484 |
format = GST_FORMAT_BYTES;
|
|
|
2485 |
if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
|
|
|
2486 |
return FALSE;
|
|
|
2487 |
|
|
|
2488 |
length = tmplength;
|
|
|
2489 |
|
|
|
2490 |
if (*index) {
|
|
|
2491 |
entry = g_list_last (*index)->data;
|
|
|
2492 |
pos = entry->offset + avi->index_offset + entry->size;
|
|
|
2493 |
if (entry->size & 1)
|
|
|
2494 |
pos++;
|
|
|
2495 |
|
|
|
2496 |
if (pos >= length) {
|
|
|
2497 |
GST_LOG_OBJECT (avi, "Complete index, we're done");
|
|
|
2498 |
return TRUE;
|
|
|
2499 |
}
|
|
|
2500 |
|
|
|
2501 |
GST_LOG_OBJECT (avi, "Incomplete index, seeking to last valid entry @ %"
|
|
|
2502 |
G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT " (%"
|
|
|
2503 |
G_GUINT64_FORMAT "+%u)", pos, length, entry->offset, entry->size);
|
|
|
2504 |
}
|
|
|
2505 |
|
|
|
2506 |
while (TRUE) {
|
|
|
2507 |
guint stream_nr;
|
|
|
2508 |
guint size = 0;
|
|
|
2509 |
|
|
|
2510 |
res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
|
|
|
2511 |
if (G_UNLIKELY (res != GST_FLOW_OK))
|
|
|
2512 |
break;
|
|
|
2513 |
|
|
|
2514 |
/* check valid stream */
|
|
|
2515 |
stream_nr = CHUNKID_TO_STREAMNR (tag);
|
|
|
2516 |
if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
|
|
|
2517 |
GST_WARNING_OBJECT (avi,
|
|
|
2518 |
"Index entry has invalid stream nr %d", stream_nr);
|
|
|
2519 |
goto next;
|
|
|
2520 |
}
|
|
|
2521 |
|
|
|
2522 |
stream = &avi->stream[stream_nr];
|
|
|
2523 |
if (G_UNLIKELY (stream->pad == NULL)) {
|
|
|
2524 |
GST_WARNING_OBJECT (avi,
|
|
|
2525 |
"Stream %d does not have an output pad, can't create new index",
|
|
|
2526 |
stream_nr);
|
|
|
2527 |
goto next;
|
|
|
2528 |
}
|
|
|
2529 |
|
|
|
2530 |
/* pre-allocate */
|
|
|
2531 |
if (G_UNLIKELY (index_size % 1024 == 0)) {
|
|
|
2532 |
entries = g_new (gst_avi_index_entry, 1024);
|
|
|
2533 |
*alloc_list = g_list_prepend (*alloc_list, entries);
|
|
|
2534 |
}
|
|
|
2535 |
entry = &entries[index_size % 1024];
|
|
|
2536 |
|
|
|
2537 |
entry->index_nr = index_size++;
|
|
|
2538 |
entry->stream_nr = stream_nr;
|
|
|
2539 |
entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
|
|
2540 |
entry->offset = pos - avi->index_offset;
|
|
|
2541 |
entry->size = size;
|
|
|
2542 |
|
|
|
2543 |
/* timestamps, get timestamps of two consecutive frames to calculate
|
|
|
2544 |
* timestamp and duration. */
|
|
|
2545 |
format = GST_FORMAT_TIME;
|
|
|
2546 |
if (stream->is_vbr) {
|
|
|
2547 |
/* VBR stream */
|
|
|
2548 |
entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
2549 |
stream->total_frames);
|
|
|
2550 |
entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
2551 |
stream->total_frames + 1);
|
|
|
2552 |
} else {
|
|
|
2553 |
/* constant rate stream */
|
|
|
2554 |
entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
2555 |
stream->total_bytes);
|
|
|
2556 |
entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
2557 |
stream->total_bytes + entry->size);
|
|
|
2558 |
}
|
|
|
2559 |
entry->dur -= entry->ts;
|
|
|
2560 |
|
|
|
2561 |
/* stream position */
|
|
|
2562 |
entry->bytes_before = stream->total_bytes;
|
|
|
2563 |
stream->total_bytes += entry->size;
|
|
|
2564 |
entry->frames_before = stream->total_frames;
|
|
|
2565 |
stream->total_frames++;
|
|
|
2566 |
stream->idx_duration = entry->ts + entry->dur;
|
|
|
2567 |
|
|
|
2568 |
list = g_list_prepend (list, entry);
|
|
|
2569 |
GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
|
|
|
2570 |
G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
|
|
|
2571 |
index_size - 1, entry->frames_before, entry->offset,
|
|
|
2572 |
GST_TIME_ARGS (entry->ts), entry->stream_nr);
|
|
|
2573 |
|
|
|
2574 |
next:
|
|
|
2575 |
/* update position */
|
|
|
2576 |
pos += GST_ROUND_UP_2 (size);
|
|
|
2577 |
if (G_UNLIKELY (pos > length)) {
|
|
|
2578 |
GST_WARNING_OBJECT (avi,
|
|
|
2579 |
"Stopping index lookup since we are further than EOF");
|
|
|
2580 |
break;
|
|
|
2581 |
}
|
|
|
2582 |
}
|
|
|
2583 |
|
|
|
2584 |
/* FIXME: why is this disabled */
|
|
|
2585 |
#if 0
|
|
|
2586 |
while (gst_avi_demux_sync (avi, &tag, TRUE)) {
|
|
|
2587 |
guint stream_nr = CHUNKID_TO_STREAMNR (tag);
|
|
|
2588 |
guint8 *data;
|
|
|
2589 |
GstFormat format = GST_FORMAT_TIME;
|
|
|
2590 |
|
|
|
2591 |
if (stream_nr >= avi->num_streams)
|
|
|
2592 |
goto next;
|
|
|
2593 |
stream = &avi->stream[stream_nr];
|
|
|
2594 |
|
|
|
2595 |
/* get chunk size */
|
|
|
2596 |
if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
|
|
|
2597 |
goto next;
|
|
|
2598 |
|
|
|
2599 |
/* fill in */
|
|
|
2600 |
entry->index_nr = index_size++;
|
|
|
2601 |
entry->stream_nr = stream_nr;
|
|
|
2602 |
entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
|
|
2603 |
entry->offset = gst_bytestream_tell (riff->bs) + 8 - avi->index_offset;
|
|
|
2604 |
entry->size = GST_READ_UINT32_LE (&data[4]);
|
|
|
2605 |
|
|
|
2606 |
/* timestamps */
|
|
|
2607 |
if (stream->is_vbr) {
|
|
|
2608 |
/* VBR stream */
|
|
|
2609 |
entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
2610 |
stream->total_frames);
|
|
|
2611 |
entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
|
|
|
2612 |
stream->total_frames + 1);
|
|
|
2613 |
} else {
|
|
|
2614 |
/* constant rate stream */
|
|
|
2615 |
entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
2616 |
stream->total_bytes);
|
|
|
2617 |
entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
|
|
|
2618 |
stream->total_bytes + entry->size);
|
|
|
2619 |
}
|
|
|
2620 |
entry->dur -= entry->ts;
|
|
|
2621 |
|
|
|
2622 |
/* stream position */
|
|
|
2623 |
entry->bytes_before = stream->total_bytes;
|
|
|
2624 |
stream->total_bytes += entry->size;
|
|
|
2625 |
entry->frames_before = stream->total_frames;
|
|
|
2626 |
stream->total_frames++;
|
|
|
2627 |
|
|
|
2628 |
list = g_list_prepend (list, entry);
|
|
|
2629 |
GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
|
|
|
2630 |
G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
|
|
|
2631 |
index_size - 1, entry->frames_before, entry->offset,
|
|
|
2632 |
GST_TIME_ARGS (entry->ts), entry->stream_nr);
|
|
|
2633 |
|
|
|
2634 |
next:
|
|
|
2635 |
if (!gst_avi_demux_skip (avi, TRUE))
|
|
|
2636 |
break;
|
|
|
2637 |
}
|
|
|
2638 |
/* seek back */
|
|
|
2639 |
if (!(event = gst_riff_read_seek (riff, pos))) {
|
|
|
2640 |
g_list_free (list);
|
|
|
2641 |
return FALSE;
|
|
|
2642 |
}
|
|
|
2643 |
gst_event_unref (event);
|
|
|
2644 |
|
|
|
2645 |
#endif
|
|
|
2646 |
|
|
|
2647 |
GST_DEBUG_OBJECT (avi, "index created, %d items", index_size);
|
|
|
2648 |
|
|
|
2649 |
*index = g_list_concat (*index, g_list_reverse (list));
|
|
|
2650 |
|
|
|
2651 |
return TRUE;
|
|
|
2652 |
}
|
|
|
2653 |
|
|
|
2654 |
/*
|
|
|
2655 |
* gst_avi_demux_massage_index:
|
|
|
2656 |
* @avi: calling element (used for debugging/errors).
|
|
|
2657 |
*
|
|
|
2658 |
* We're going to go over each entry in the index and finetune
|
|
|
2659 |
* some things we don't like about AVI. For example, a single
|
|
|
2660 |
* chunk might be too long. Also, individual streams might be
|
|
|
2661 |
* out-of-sync. In the first case, we cut the chunk in several
|
|
|
2662 |
* smaller pieces. In the second case, we re-order chunk reading
|
|
|
2663 |
* order. The end result should be a smoother playing AVI.
|
|
|
2664 |
*/
|
|
|
2665 |
static gboolean
|
|
|
2666 |
gst_avi_demux_massage_index (GstAviDemux * avi,
|
|
|
2667 |
GList * list, GList * alloc_list)
|
|
|
2668 |
{
|
|
|
2669 |
gst_avi_index_entry *entry;
|
|
|
2670 |
avi_stream_context *stream;
|
|
|
2671 |
guint i;
|
|
|
2672 |
GList *node;
|
|
|
2673 |
gint64 delay = G_GINT64_CONSTANT (0);
|
|
|
2674 |
|
|
|
2675 |
GST_LOG_OBJECT (avi, "Starting index massage, nr_entries = %d",
|
|
|
2676 |
list ? g_list_length (list) : 0);
|
|
|
2677 |
|
|
|
2678 |
if (list) {
|
|
|
2679 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2680 |
guint num_added_total = 0;
|
|
|
2681 |
guint num_per_stream[GST_AVI_DEMUX_MAX_STREAMS] = { 0, };
|
|
|
2682 |
#endif
|
|
|
2683 |
GST_LOG_OBJECT (avi,
|
|
|
2684 |
"I'm now going to cut large chunks into smaller pieces");
|
|
|
2685 |
|
|
|
2686 |
/* cut chunks in small (seekable) pieces
|
|
|
2687 |
* FIXME: this should be a property where a value of
|
|
|
2688 |
* GST_CLOCK_TIME_NONE would disable the chunking
|
|
|
2689 |
*/
|
|
|
2690 |
#define MAX_DURATION (GST_SECOND / 2)
|
|
|
2691 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
2692 |
/* only chop streams that have exactly *one* chunk */
|
|
|
2693 |
if (avi->stream[i].total_frames != 1)
|
|
|
2694 |
continue;
|
|
|
2695 |
|
|
|
2696 |
for (node = list; node != NULL; node = node->next) {
|
|
|
2697 |
entry = node->data;
|
|
|
2698 |
|
|
|
2699 |
if (entry->stream_nr != i)
|
|
|
2700 |
continue;
|
|
|
2701 |
|
|
|
2702 |
/* check for max duration of a single buffer. I suppose that
|
|
|
2703 |
* the allocation of index entries could be improved. */
|
|
|
2704 |
stream = &avi->stream[entry->stream_nr];
|
|
|
2705 |
if (entry->dur > MAX_DURATION
|
|
|
2706 |
&& stream->strh->type == GST_RIFF_FCC_auds) {
|
|
|
2707 |
guint32 ideal_size;
|
|
|
2708 |
gst_avi_index_entry *entries;
|
|
|
2709 |
guint old_size, num_added;
|
|
|
2710 |
GList *node2;
|
|
|
2711 |
|
|
|
2712 |
/* cut in 1/10th of a second */
|
|
|
2713 |
ideal_size = stream->strf.auds->av_bps / 10;
|
|
|
2714 |
|
|
|
2715 |
/* ensure chunk size is multiple of blockalign */
|
|
|
2716 |
if (stream->strf.auds->blockalign > 1)
|
|
|
2717 |
ideal_size -= ideal_size % stream->strf.auds->blockalign;
|
|
|
2718 |
|
|
|
2719 |
/* copy index */
|
|
|
2720 |
old_size = entry->size;
|
|
|
2721 |
num_added = (entry->size - 1) / ideal_size;
|
|
|
2722 |
avi->index_size += num_added;
|
|
|
2723 |
entries = g_malloc (sizeof (gst_avi_index_entry) * num_added);
|
|
|
2724 |
alloc_list = g_list_prepend (alloc_list, entries);
|
|
|
2725 |
for (node2 = node->next; node2 != NULL; node2 = node2->next) {
|
|
|
2726 |
gst_avi_index_entry *entry2 = node2->data;
|
|
|
2727 |
|
|
|
2728 |
entry2->index_nr += num_added;
|
|
|
2729 |
if (entry2->stream_nr == entry->stream_nr)
|
|
|
2730 |
entry2->frames_before += num_added;
|
|
|
2731 |
}
|
|
|
2732 |
|
|
|
2733 |
/* new sized index chunks */
|
|
|
2734 |
for (i = 0; i < num_added + 1; i++) {
|
|
|
2735 |
gst_avi_index_entry *entry2;
|
|
|
2736 |
|
|
|
2737 |
if (i == 0) {
|
|
|
2738 |
entry2 = entry;
|
|
|
2739 |
} else {
|
|
|
2740 |
entry2 = &entries[i - 1];
|
|
|
2741 |
list = g_list_insert_before (list, node->next, entry2);
|
|
|
2742 |
entry = node->data;
|
|
|
2743 |
node = node->next;
|
|
|
2744 |
memcpy (entry2, entry, sizeof (gst_avi_index_entry));
|
|
|
2745 |
}
|
|
|
2746 |
|
|
|
2747 |
if (old_size >= ideal_size) {
|
|
|
2748 |
entry2->size = ideal_size;
|
|
|
2749 |
old_size -= ideal_size;
|
|
|
2750 |
} else {
|
|
|
2751 |
entry2->size = old_size;
|
|
|
2752 |
}
|
|
|
2753 |
|
|
|
2754 |
entry2->dur = GST_SECOND * entry2->size / stream->strf.auds->av_bps;
|
|
|
2755 |
if (i != 0) {
|
|
|
2756 |
entry2->index_nr++;
|
|
|
2757 |
entry2->ts += entry->dur;
|
|
|
2758 |
entry2->offset += entry->size;
|
|
|
2759 |
entry2->bytes_before += entry->size;
|
|
|
2760 |
entry2->frames_before++;
|
|
|
2761 |
}
|
|
|
2762 |
}
|
|
|
2763 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2764 |
num_added_total += num_added;
|
|
|
2765 |
#endif
|
|
|
2766 |
}
|
|
|
2767 |
}
|
|
|
2768 |
}
|
|
|
2769 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2770 |
if (num_added_total)
|
|
|
2771 |
GST_LOG ("added %u new index entries", num_added_total);
|
|
|
2772 |
#endif
|
|
|
2773 |
|
|
|
2774 |
GST_LOG_OBJECT (avi, "I'm now going to reorder the index entries for time");
|
|
|
2775 |
|
|
|
2776 |
/* re-order for time */
|
|
|
2777 |
list = g_list_sort (list, (GCompareFunc) sort);
|
|
|
2778 |
|
|
|
2779 |
/* make a continous array out of the list */
|
|
|
2780 |
avi->index_size = g_list_length (list);
|
|
|
2781 |
avi->index_entries = g_try_new (gst_avi_index_entry, avi->index_size);
|
|
|
2782 |
if (!avi->index_entries)
|
|
|
2783 |
goto out_of_mem;
|
|
|
2784 |
|
|
|
2785 |
entry = (gst_avi_index_entry *) (list->data);
|
|
|
2786 |
delay = entry->ts;
|
|
|
2787 |
|
|
|
2788 |
GST_LOG_OBJECT (avi,
|
|
|
2789 |
"Building index array, nr_entries = %d (time offset = %"
|
|
|
2790 |
GST_TIME_FORMAT, avi->index_size, GST_TIME_ARGS (delay));
|
|
|
2791 |
|
|
|
2792 |
for (i = 0, node = list; node != NULL; node = node->next, i++) {
|
|
|
2793 |
entry = node->data;
|
|
|
2794 |
entry->index_nr = i;
|
|
|
2795 |
entry->ts -= delay;
|
|
|
2796 |
memcpy (&avi->index_entries[i], entry, sizeof (gst_avi_index_entry));
|
|
|
2797 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2798 |
num_per_stream[entry->stream_nr]++;
|
|
|
2799 |
#endif
|
|
|
2800 |
|
|
|
2801 |
GST_LOG_OBJECT (avi, "Sorted index entry %3d for stream %d of size %6u"
|
|
|
2802 |
" at offset %7" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT
|
|
|
2803 |
" dur %" GST_TIME_FORMAT,
|
|
|
2804 |
avi->index_entries[i].index_nr, entry->stream_nr, entry->size,
|
|
|
2805 |
entry->offset, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
|
|
|
2806 |
}
|
|
|
2807 |
if (delay) {
|
|
|
2808 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
2809 |
stream = &avi->stream[i];
|
|
|
2810 |
stream->idx_duration -= delay;
|
|
|
2811 |
}
|
|
|
2812 |
}
|
|
|
2813 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2814 |
{
|
|
|
2815 |
gchar str[GST_AVI_DEMUX_MAX_STREAMS * (1 + 6 + 2)];
|
|
|
2816 |
gchar *pad_name;
|
|
|
2817 |
|
|
|
2818 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
2819 |
if (!avi->stream[i].pad)
|
|
|
2820 |
continue;
|
|
|
2821 |
pad_name = GST_OBJECT_NAME (avi->stream[i].pad);
|
|
|
2822 |
sprintf (&str[i * (1 + 6 + 2)], " %6u %c", num_per_stream[i],
|
|
|
2823 |
pad_name[0]);
|
|
|
2824 |
}
|
|
|
2825 |
GST_LOG_OBJECT (avi, "indizies per stream:%20s", str);
|
|
|
2826 |
}
|
|
|
2827 |
#endif
|
|
|
2828 |
|
|
|
2829 |
GST_LOG_OBJECT (avi, "Freeing original index list");
|
|
|
2830 |
/* all the node->data in list point to alloc_list chunks */
|
|
|
2831 |
|
|
|
2832 |
g_list_free (list);
|
|
|
2833 |
}
|
|
|
2834 |
if (alloc_list) {
|
|
|
2835 |
g_list_foreach (alloc_list, (GFunc) g_free, NULL);
|
|
|
2836 |
g_list_free (alloc_list);
|
|
|
2837 |
}
|
|
|
2838 |
#ifndef GST_DISABLE_GST_DEBUG
|
|
|
2839 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
2840 |
GST_LOG_OBJECT (avi, "Stream %d, %d frames, %8" G_GUINT64_FORMAT " bytes",
|
|
|
2841 |
i, avi->stream[i].total_frames, avi->stream[i].total_bytes);
|
|
|
2842 |
}
|
|
|
2843 |
#endif
|
|
|
2844 |
|
|
|
2845 |
GST_LOG_OBJECT (avi, "Index massaging done");
|
|
|
2846 |
return TRUE;
|
|
|
2847 |
|
|
|
2848 |
/* ERRORS */
|
|
|
2849 |
out_of_mem:
|
|
|
2850 |
GST_WARNING_OBJECT (avi, "Out of memory for %" G_GSIZE_FORMAT " bytes",
|
|
|
2851 |
sizeof (gst_avi_index_entry) * avi->index_size);
|
|
|
2852 |
return FALSE;
|
|
|
2853 |
}
|
|
|
2854 |
|
|
|
2855 |
static void
|
|
|
2856 |
gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
|
|
|
2857 |
{
|
|
|
2858 |
gint stream;
|
|
|
2859 |
GstClockTime total;
|
|
|
2860 |
|
|
|
2861 |
total = GST_CLOCK_TIME_NONE;
|
|
|
2862 |
|
|
|
2863 |
/* all streams start at a timestamp 0 */
|
|
|
2864 |
for (stream = 0; stream < avi->num_streams; stream++) {
|
|
|
2865 |
GstClockTime duration, hduration;
|
|
|
2866 |
avi_stream_context *streamc = &avi->stream[stream];
|
|
|
2867 |
gst_riff_strh *strh = streamc->strh;
|
|
|
2868 |
|
|
|
2869 |
if (!strh)
|
|
|
2870 |
continue;
|
|
|
2871 |
|
|
|
2872 |
/* get header duration for the stream */
|
|
|
2873 |
hduration = streamc->hdr_duration;
|
|
|
2874 |
|
|
|
2875 |
/* index duration calculated during parsing, invariant under massage */
|
|
|
2876 |
duration = streamc->idx_duration;
|
|
|
2877 |
|
|
|
2878 |
/* now pick a good duration */
|
|
|
2879 |
if (GST_CLOCK_TIME_IS_VALID (duration)) {
|
|
|
2880 |
/* index gave valid duration, use that */
|
|
|
2881 |
GST_INFO ("Stream %d duration according to index: %" GST_TIME_FORMAT,
|
|
|
2882 |
stream, GST_TIME_ARGS (duration));
|
|
|
2883 |
} else {
|
|
|
2884 |
/* fall back to header info to calculate a duration */
|
|
|
2885 |
duration = hduration;
|
|
|
2886 |
}
|
|
|
2887 |
/* set duration for the stream */
|
|
|
2888 |
streamc->duration = duration;
|
|
|
2889 |
|
|
|
2890 |
/* find total duration */
|
|
|
2891 |
if (total == GST_CLOCK_TIME_NONE || duration > total)
|
|
|
2892 |
total = duration;
|
|
|
2893 |
}
|
|
|
2894 |
|
|
|
2895 |
if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
|
|
|
2896 |
/* now update the duration for those streams where we had none */
|
|
|
2897 |
for (stream = 0; stream < avi->num_streams; stream++) {
|
|
|
2898 |
avi_stream_context *streamc = &avi->stream[stream];
|
|
|
2899 |
|
|
|
2900 |
if (!GST_CLOCK_TIME_IS_VALID (streamc->duration)
|
|
|
2901 |
|| streamc->duration == 0) {
|
|
|
2902 |
streamc->duration = total;
|
|
|
2903 |
|
|
|
2904 |
GST_INFO ("Stream %d duration according to total: %" GST_TIME_FORMAT,
|
|
|
2905 |
stream, GST_TIME_ARGS (total));
|
|
|
2906 |
}
|
|
|
2907 |
}
|
|
|
2908 |
}
|
|
|
2909 |
|
|
|
2910 |
/* and set the total duration in the segment. */
|
|
|
2911 |
GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
|
|
|
2912 |
GST_TIME_ARGS (total));
|
|
|
2913 |
|
|
|
2914 |
gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
|
|
|
2915 |
}
|
|
|
2916 |
|
|
|
2917 |
/* returns FALSE if there are no pads to deliver event to,
|
|
|
2918 |
* otherwise TRUE (whatever the outcome of event sending) */
|
|
|
2919 |
static gboolean
|
|
|
2920 |
gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
|
|
|
2921 |
{
|
|
|
2922 |
gboolean result = FALSE;
|
|
|
2923 |
gint i;
|
|
|
2924 |
|
|
|
2925 |
GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
|
|
|
2926 |
GST_EVENT_TYPE_NAME (event), avi->num_streams);
|
|
|
2927 |
|
|
|
2928 |
if (avi->num_streams) {
|
|
|
2929 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
2930 |
avi_stream_context *stream = &avi->stream[i];
|
|
|
2931 |
|
|
|
2932 |
if (stream->pad) {
|
|
|
2933 |
result = TRUE;
|
|
|
2934 |
gst_pad_push_event (stream->pad, gst_event_ref (event));
|
|
|
2935 |
}
|
|
|
2936 |
}
|
|
|
2937 |
}
|
|
|
2938 |
gst_event_unref (event);
|
|
|
2939 |
return result;
|
|
|
2940 |
}
|
|
|
2941 |
|
|
|
2942 |
/*
|
|
|
2943 |
* Read AVI headers when streaming
|
|
|
2944 |
*/
|
|
|
2945 |
static GstFlowReturn
|
|
|
2946 |
gst_avi_demux_stream_header_push (GstAviDemux * avi)
|
|
|
2947 |
{
|
|
|
2948 |
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
2949 |
guint32 tag = 0;
|
|
|
2950 |
guint32 ltag = 0;
|
|
|
2951 |
guint32 size = 0;
|
|
|
2952 |
const guint8 *data;
|
|
|
2953 |
GstBuffer *buf = NULL, *sub = NULL;
|
|
|
2954 |
guint offset = 4;
|
|
|
2955 |
gint64 stop;
|
|
|
2956 |
|
|
|
2957 |
GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
|
|
|
2958 |
|
|
|
2959 |
switch (avi->header_state) {
|
|
|
2960 |
case GST_AVI_DEMUX_HEADER_TAG_LIST:
|
|
|
2961 |
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
|
|
2962 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
2963 |
if (tag != GST_RIFF_TAG_LIST)
|
|
|
2964 |
goto header_no_list;
|
|
|
2965 |
|
|
|
2966 |
gst_adapter_flush (avi->adapter, 8);
|
|
|
2967 |
/* Find the 'hdrl' LIST tag */
|
|
|
2968 |
GST_DEBUG ("Reading %d bytes", size);
|
|
|
2969 |
buf = gst_adapter_take_buffer (avi->adapter, size);
|
|
|
2970 |
|
|
|
2971 |
if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
|
|
|
2972 |
goto header_no_hdrl;
|
|
|
2973 |
|
|
|
2974 |
/* mind padding */
|
|
|
2975 |
if (size & 1)
|
|
|
2976 |
gst_adapter_flush (avi->adapter, 1);
|
|
|
2977 |
|
|
|
2978 |
GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
|
|
|
2979 |
|
|
|
2980 |
/* the hdrl starts with a 'avih' header */
|
|
|
2981 |
if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
|
|
|
2982 |
goto header_no_avih;
|
|
|
2983 |
|
|
|
2984 |
if (tag != GST_RIFF_TAG_avih)
|
|
|
2985 |
goto header_no_avih;
|
|
|
2986 |
|
|
|
2987 |
if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
|
|
|
2988 |
goto header_wrong_avih;
|
|
|
2989 |
|
|
|
2990 |
GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
|
|
|
2991 |
|
|
|
2992 |
/* now, read the elements from the header until the end */
|
|
|
2993 |
while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
|
|
|
2994 |
&sub)) {
|
|
|
2995 |
/* sub can be NULL on empty tags */
|
|
|
2996 |
if (!sub)
|
|
|
2997 |
continue;
|
|
|
2998 |
|
|
|
2999 |
switch (tag) {
|
|
|
3000 |
case GST_RIFF_TAG_LIST:
|
|
|
3001 |
if (GST_BUFFER_SIZE (sub) < 4)
|
|
|
3002 |
goto next;
|
|
|
3003 |
|
|
|
3004 |
switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
|
|
|
3005 |
case GST_RIFF_LIST_strl:
|
|
|
3006 |
if (!(gst_avi_demux_parse_stream (avi, sub))) {
|
|
|
3007 |
sub = NULL;
|
|
|
3008 |
GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
|
|
|
3009 |
("failed to parse stream, ignoring"));
|
|
|
3010 |
goto next;
|
|
|
3011 |
}
|
|
|
3012 |
sub = NULL;
|
|
|
3013 |
goto next;
|
|
|
3014 |
case GST_RIFF_LIST_odml:
|
|
|
3015 |
gst_avi_demux_parse_odml (avi, sub);
|
|
|
3016 |
sub = NULL;
|
|
|
3017 |
break;
|
|
|
3018 |
default:
|
|
|
3019 |
GST_WARNING_OBJECT (avi,
|
|
|
3020 |
"Unknown list %" GST_FOURCC_FORMAT " in AVI header",
|
|
|
3021 |
GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
|
|
|
3022 |
(sub))));
|
|
|
3023 |
/* fall-through */
|
|
|
3024 |
case GST_RIFF_TAG_JUNK:
|
|
|
3025 |
goto next;
|
|
|
3026 |
}
|
|
|
3027 |
break;
|
|
|
3028 |
default:
|
|
|
3029 |
GST_WARNING_OBJECT (avi,
|
|
|
3030 |
"Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
|
|
|
3031 |
offset, GST_FOURCC_ARGS (tag));
|
|
|
3032 |
/* fall-through */
|
|
|
3033 |
case GST_RIFF_TAG_JUNK:
|
|
|
3034 |
next:
|
|
|
3035 |
/* move to next chunk */
|
|
|
3036 |
if (sub)
|
|
|
3037 |
gst_buffer_unref (sub);
|
|
|
3038 |
sub = NULL;
|
|
|
3039 |
break;
|
|
|
3040 |
}
|
|
|
3041 |
}
|
|
|
3042 |
gst_buffer_unref (buf);
|
|
|
3043 |
GST_DEBUG ("elements parsed");
|
|
|
3044 |
|
|
|
3045 |
/* check parsed streams */
|
|
|
3046 |
if (avi->num_streams == 0) {
|
|
|
3047 |
goto no_streams;
|
|
|
3048 |
} else if (avi->num_streams != avi->avih->streams) {
|
|
|
3049 |
GST_WARNING_OBJECT (avi,
|
|
|
3050 |
"Stream header mentioned %d streams, but %d available",
|
|
|
3051 |
avi->avih->streams, avi->num_streams);
|
|
|
3052 |
}
|
|
|
3053 |
GST_DEBUG ("Get junk and info next");
|
|
|
3054 |
avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
|
|
|
3055 |
} else {
|
|
|
3056 |
/* Need more data */
|
|
|
3057 |
return ret;
|
|
|
3058 |
}
|
|
|
3059 |
/* fall-though */
|
|
|
3060 |
case GST_AVI_DEMUX_HEADER_INFO:
|
|
|
3061 |
GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
|
|
|
3062 |
while (TRUE) {
|
|
|
3063 |
if (gst_adapter_available (avi->adapter) < 12)
|
|
|
3064 |
return GST_FLOW_OK;
|
|
|
3065 |
|
|
|
3066 |
data = gst_adapter_peek (avi->adapter, 12);
|
|
|
3067 |
tag = GST_READ_UINT32_LE (data);
|
|
|
3068 |
size = GST_READ_UINT32_LE (data + 4);
|
|
|
3069 |
ltag = GST_READ_UINT32_LE (data + 8);
|
|
|
3070 |
|
|
|
3071 |
if (tag == GST_RIFF_TAG_LIST) {
|
|
|
3072 |
switch (ltag) {
|
|
|
3073 |
case GST_RIFF_LIST_movi:
|
|
|
3074 |
gst_adapter_flush (avi->adapter, 12);
|
|
|
3075 |
avi->offset += 12;
|
|
|
3076 |
goto skipping_done;
|
|
|
3077 |
case GST_RIFF_LIST_INFO:
|
|
|
3078 |
GST_DEBUG ("Found INFO chunk");
|
|
|
3079 |
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
|
|
3080 |
GST_DEBUG ("got size %d", size);
|
|
|
3081 |
avi->offset += 12;
|
|
|
3082 |
gst_adapter_flush (avi->adapter, 12);
|
|
|
3083 |
if (size > 4) {
|
|
|
3084 |
buf = gst_adapter_take_buffer (avi->adapter, size - 4);
|
|
|
3085 |
/* mind padding */
|
|
|
3086 |
if (size & 1)
|
|
|
3087 |
gst_adapter_flush (avi->adapter, 1);
|
|
|
3088 |
gst_riff_parse_info (GST_ELEMENT (avi), buf,
|
|
|
3089 |
&avi->globaltags);
|
|
|
3090 |
gst_buffer_unref (buf);
|
|
|
3091 |
|
|
|
3092 |
avi->offset += ((size + 1) & ~1) - 4;
|
|
|
3093 |
} else {
|
|
|
3094 |
GST_DEBUG ("skipping INFO LIST prefix");
|
|
|
3095 |
}
|
|
|
3096 |
} else {
|
|
|
3097 |
/* Need more data */
|
|
|
3098 |
return GST_FLOW_OK;
|
|
|
3099 |
}
|
|
|
3100 |
break;
|
|
|
3101 |
default:
|
|
|
3102 |
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
|
|
3103 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
3104 |
gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
|
|
|
3105 |
// ??? goto iterate; ???
|
|
|
3106 |
} else {
|
|
|
3107 |
/* Need more data */
|
|
|
3108 |
return GST_FLOW_OK;
|
|
|
3109 |
}
|
|
|
3110 |
break;
|
|
|
3111 |
}
|
|
|
3112 |
} else {
|
|
|
3113 |
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
|
|
3114 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
3115 |
gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
|
|
|
3116 |
//goto iterate;
|
|
|
3117 |
} else {
|
|
|
3118 |
/* Need more data */
|
|
|
3119 |
return GST_FLOW_OK;
|
|
|
3120 |
}
|
|
|
3121 |
}
|
|
|
3122 |
}
|
|
|
3123 |
break;
|
|
|
3124 |
default:
|
|
|
3125 |
GST_WARNING ("unhandled header state: %d", avi->header_state);
|
|
|
3126 |
break;
|
|
|
3127 |
}
|
|
|
3128 |
skipping_done:
|
|
|
3129 |
|
|
|
3130 |
GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
|
|
|
3131 |
avi->num_streams, avi->stream[0].indexes);
|
|
|
3132 |
|
|
|
3133 |
GST_DEBUG ("Found movi chunk. Starting to stream data");
|
|
|
3134 |
avi->state = GST_AVI_DEMUX_MOVI;
|
|
|
3135 |
|
|
|
3136 |
#if 0
|
|
|
3137 |
/*GList *index = NULL, *alloc = NULL; */
|
|
|
3138 |
|
|
|
3139 |
/* ######################## this need to be integrated with the state */
|
|
|
3140 |
/* create or read stream index (for seeking) */
|
|
|
3141 |
if (avi->stream[0].indexes != NULL) {
|
|
|
3142 |
gst_avi_demux_read_subindexes_push (avi, &index, &alloc);
|
|
|
3143 |
}
|
|
|
3144 |
if (!index) {
|
|
|
3145 |
if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
|
|
|
3146 |
gst_avi_demux_stream_index (avi, &index, &alloc);
|
|
|
3147 |
}
|
|
|
3148 |
/* some indexes are incomplete, continue streaming from there */
|
|
|
3149 |
if (!index)
|
|
|
3150 |
gst_avi_demux_stream_scan (avi, &index, &alloc);
|
|
|
3151 |
}
|
|
|
3152 |
|
|
|
3153 |
/* this is a fatal error */
|
|
|
3154 |
if (!index)
|
|
|
3155 |
goto no_index;
|
|
|
3156 |
|
|
|
3157 |
if (!gst_avi_demux_massage_index (avi, index, alloc))
|
|
|
3158 |
goto no_index;
|
|
|
3159 |
|
|
|
3160 |
gst_avi_demux_calculate_durations_from_index (avi);
|
|
|
3161 |
/* ######################## */
|
|
|
3162 |
#endif
|
|
|
3163 |
|
|
|
3164 |
/* create initial NEWSEGMENT event */
|
|
|
3165 |
if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
|
|
|
3166 |
stop = avi->segment.duration;
|
|
|
3167 |
|
|
|
3168 |
GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
|
|
|
3169 |
|
|
|
3170 |
if (avi->seek_event)
|
|
|
3171 |
gst_event_unref (avi->seek_event);
|
|
|
3172 |
avi->seek_event = gst_event_new_new_segment
|
|
|
3173 |
(FALSE, avi->segment.rate, GST_FORMAT_TIME,
|
|
|
3174 |
avi->segment.start, stop, avi->segment.start);
|
|
|
3175 |
|
|
|
3176 |
/* at this point we know all the streams and we can signal the no more
|
|
|
3177 |
* pads signal */
|
|
|
3178 |
GST_DEBUG_OBJECT (avi, "signaling no more pads");
|
|
|
3179 |
gst_element_no_more_pads (GST_ELEMENT (avi));
|
|
|
3180 |
|
|
|
3181 |
return GST_FLOW_OK;
|
|
|
3182 |
|
|
|
3183 |
/* ERRORS */
|
|
|
3184 |
no_streams:
|
|
|
3185 |
{
|
|
|
3186 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
|
|
|
3187 |
return GST_FLOW_ERROR;
|
|
|
3188 |
}
|
|
|
3189 |
header_no_list:
|
|
|
3190 |
{
|
|
|
3191 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3192 |
("Invalid AVI header (no LIST at start): %"
|
|
|
3193 |
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
|
3194 |
return GST_FLOW_ERROR;
|
|
|
3195 |
}
|
|
|
3196 |
header_no_hdrl:
|
|
|
3197 |
{
|
|
|
3198 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3199 |
("Invalid AVI header (no hdrl at start): %"
|
|
|
3200 |
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
|
3201 |
gst_buffer_unref (buf);
|
|
|
3202 |
return GST_FLOW_ERROR;
|
|
|
3203 |
}
|
|
|
3204 |
header_no_avih:
|
|
|
3205 |
{
|
|
|
3206 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3207 |
("Invalid AVI header (no avih at start): %"
|
|
|
3208 |
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
|
3209 |
if (sub)
|
|
|
3210 |
gst_buffer_unref (sub);
|
|
|
3211 |
|
|
|
3212 |
gst_buffer_unref (buf);
|
|
|
3213 |
return GST_FLOW_ERROR;
|
|
|
3214 |
}
|
|
|
3215 |
header_wrong_avih:
|
|
|
3216 |
{
|
|
|
3217 |
gst_buffer_unref (buf);
|
|
|
3218 |
return GST_FLOW_ERROR;
|
|
|
3219 |
}
|
|
|
3220 |
}
|
|
|
3221 |
|
|
|
3222 |
/*
|
|
|
3223 |
* Read full AVI headers.
|
|
|
3224 |
*/
|
|
|
3225 |
static GstFlowReturn
|
|
|
3226 |
gst_avi_demux_stream_header_pull (GstAviDemux * avi)
|
|
|
3227 |
{
|
|
|
3228 |
GstFlowReturn res;
|
|
|
3229 |
GstBuffer *buf, *sub = NULL;
|
|
|
3230 |
guint32 tag;
|
|
|
3231 |
GList *index = NULL, *alloc = NULL;
|
|
|
3232 |
guint offset = 4;
|
|
|
3233 |
gint64 stop;
|
|
|
3234 |
GstElement *element = GST_ELEMENT_CAST (avi);
|
|
|
3235 |
|
|
|
3236 |
/* the header consists of a 'hdrl' LIST tag */
|
|
|
3237 |
res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
|
|
|
3238 |
if (res != GST_FLOW_OK)
|
|
|
3239 |
goto pull_range_failed;
|
|
|
3240 |
else if (tag != GST_RIFF_TAG_LIST)
|
|
|
3241 |
goto no_list;
|
|
|
3242 |
else if (GST_BUFFER_SIZE (buf) < 4)
|
|
|
3243 |
goto no_header;
|
|
|
3244 |
|
|
|
3245 |
GST_DEBUG_OBJECT (avi, "parsing headers");
|
|
|
3246 |
|
|
|
3247 |
/* Find the 'hdrl' LIST tag */
|
|
|
3248 |
while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
|
|
|
3249 |
GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
|
|
|
3250 |
GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
|
|
|
3251 |
|
|
|
3252 |
/* Eat up */
|
|
|
3253 |
gst_buffer_unref (buf);
|
|
|
3254 |
|
|
|
3255 |
/* read new chunk */
|
|
|
3256 |
res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
|
|
|
3257 |
if (res != GST_FLOW_OK)
|
|
|
3258 |
goto pull_range_failed;
|
|
|
3259 |
else if (tag != GST_RIFF_TAG_LIST)
|
|
|
3260 |
goto no_list;
|
|
|
3261 |
else if (GST_BUFFER_SIZE (buf) < 4)
|
|
|
3262 |
goto no_header;
|
|
|
3263 |
}
|
|
|
3264 |
|
|
|
3265 |
GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
|
|
|
3266 |
|
|
|
3267 |
/* the hdrl starts with a 'avih' header */
|
|
|
3268 |
if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
|
|
|
3269 |
goto no_avih;
|
|
|
3270 |
else if (tag != GST_RIFF_TAG_avih)
|
|
|
3271 |
goto no_avih;
|
|
|
3272 |
else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
|
|
|
3273 |
goto invalid_avih;
|
|
|
3274 |
|
|
|
3275 |
GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
|
|
|
3276 |
|
|
|
3277 |
/* now, read the elements from the header until the end */
|
|
|
3278 |
while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
|
|
|
3279 |
/* sub can be NULL on empty tags */
|
|
|
3280 |
if (!sub)
|
|
|
3281 |
continue;
|
|
|
3282 |
|
|
|
3283 |
switch (tag) {
|
|
|
3284 |
case GST_RIFF_TAG_LIST:
|
|
|
3285 |
{
|
|
|
3286 |
guint8 *data;
|
|
|
3287 |
guint32 fourcc;
|
|
|
3288 |
|
|
|
3289 |
if (GST_BUFFER_SIZE (sub) < 4)
|
|
|
3290 |
goto next;
|
|
|
3291 |
|
|
|
3292 |
data = GST_BUFFER_DATA (sub);
|
|
|
3293 |
fourcc = GST_READ_UINT32_LE (data);
|
|
|
3294 |
|
|
|
3295 |
switch (fourcc) {
|
|
|
3296 |
case GST_RIFF_LIST_strl:
|
|
|
3297 |
if (!(gst_avi_demux_parse_stream (avi, sub))) {
|
|
|
3298 |
GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
|
|
|
3299 |
("failed to parse stream, ignoring"));
|
|
|
3300 |
sub = NULL;
|
|
|
3301 |
}
|
|
|
3302 |
sub = NULL;
|
|
|
3303 |
goto next;
|
|
|
3304 |
case GST_RIFF_LIST_odml:
|
|
|
3305 |
gst_avi_demux_parse_odml (avi, sub);
|
|
|
3306 |
sub = NULL;
|
|
|
3307 |
break;
|
|
|
3308 |
default:
|
|
|
3309 |
GST_WARNING_OBJECT (avi,
|
|
|
3310 |
"Unknown list %" GST_FOURCC_FORMAT " in AVI header",
|
|
|
3311 |
GST_FOURCC_ARGS (fourcc));
|
|
|
3312 |
GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
|
|
|
3313 |
GST_BUFFER_SIZE (sub));
|
|
|
3314 |
/* fall-through */
|
|
|
3315 |
case GST_RIFF_TAG_JUNK:
|
|
|
3316 |
goto next;
|
|
|
3317 |
}
|
|
|
3318 |
break;
|
|
|
3319 |
}
|
|
|
3320 |
default:
|
|
|
3321 |
GST_WARNING_OBJECT (avi,
|
|
|
3322 |
"Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
|
|
|
3323 |
GST_FOURCC_ARGS (tag), offset);
|
|
|
3324 |
GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
|
|
|
3325 |
GST_BUFFER_SIZE (sub));
|
|
|
3326 |
/* fall-through */
|
|
|
3327 |
case GST_RIFF_TAG_JUNK:
|
|
|
3328 |
next:
|
|
|
3329 |
if (sub)
|
|
|
3330 |
gst_buffer_unref (sub);
|
|
|
3331 |
sub = NULL;
|
|
|
3332 |
break;
|
|
|
3333 |
}
|
|
|
3334 |
}
|
|
|
3335 |
gst_buffer_unref (buf);
|
|
|
3336 |
GST_DEBUG ("elements parsed");
|
|
|
3337 |
|
|
|
3338 |
/* check parsed streams */
|
|
|
3339 |
if (avi->num_streams == 0)
|
|
|
3340 |
goto no_streams;
|
|
|
3341 |
else if (avi->num_streams != avi->avih->streams) {
|
|
|
3342 |
GST_WARNING_OBJECT (avi,
|
|
|
3343 |
"Stream header mentioned %d streams, but %d available",
|
|
|
3344 |
avi->avih->streams, avi->num_streams);
|
|
|
3345 |
}
|
|
|
3346 |
|
|
|
3347 |
GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
|
|
|
3348 |
G_GUINT64_FORMAT, avi->offset);
|
|
|
3349 |
|
|
|
3350 |
/* Now, find the data (i.e. skip all junk between header and data) */
|
|
|
3351 |
do {
|
|
|
3352 |
guint size;
|
|
|
3353 |
guint32 tag, ltag;
|
|
|
3354 |
|
|
|
3355 |
res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
|
|
|
3356 |
if (res != GST_FLOW_OK) {
|
|
|
3357 |
GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
|
|
|
3358 |
goto pull_range_failed;
|
|
|
3359 |
} else if (GST_BUFFER_SIZE (buf) < 12) {
|
|
|
3360 |
GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
|
|
|
3361 |
GST_BUFFER_SIZE (buf));
|
|
|
3362 |
gst_buffer_unref (buf);
|
|
|
3363 |
return GST_FLOW_ERROR;
|
|
|
3364 |
}
|
|
|
3365 |
|
|
|
3366 |
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
|
|
3367 |
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
|
|
3368 |
ltag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 8);
|
|
|
3369 |
|
|
|
3370 |
GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
|
|
|
3371 |
GST_FOURCC_ARGS (tag), size);
|
|
|
3372 |
GST_MEMDUMP ("Tag content", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
|
|
|
3373 |
gst_buffer_unref (buf);
|
|
|
3374 |
|
|
|
3375 |
switch (tag) {
|
|
|
3376 |
case GST_RIFF_TAG_LIST:{
|
|
|
3377 |
switch (ltag) {
|
|
|
3378 |
case GST_RIFF_LIST_movi:
|
|
|
3379 |
GST_DEBUG_OBJECT (avi,
|
|
|
3380 |
"Reached the 'movi' tag, we're done with skipping");
|
|
|
3381 |
goto skipping_done;
|
|
|
3382 |
case GST_RIFF_LIST_INFO:
|
|
|
3383 |
res =
|
|
|
3384 |
gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
|
|
|
3385 |
&buf);
|
|
|
3386 |
if (res != GST_FLOW_OK) {
|
|
|
3387 |
GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
|
|
|
3388 |
goto pull_range_failed;
|
|
|
3389 |
}
|
|
|
3390 |
GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
|
|
|
3391 |
if (size < 4) {
|
|
|
3392 |
GST_DEBUG ("skipping INFO LIST prefix");
|
|
|
3393 |
avi->offset += (4 - GST_ROUND_UP_2 (size));
|
|
|
3394 |
gst_buffer_unref (buf);
|
|
|
3395 |
continue;
|
|
|
3396 |
}
|
|
|
3397 |
|
|
|
3398 |
sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
|
|
|
3399 |
gst_riff_parse_info (element, sub, &avi->globaltags);
|
|
|
3400 |
if (sub) {
|
|
|
3401 |
gst_buffer_unref (sub);
|
|
|
3402 |
sub = NULL;
|
|
|
3403 |
}
|
|
|
3404 |
gst_buffer_unref (buf);
|
|
|
3405 |
/* gst_riff_read_chunk() has already advanced avi->offset */
|
|
|
3406 |
break;
|
|
|
3407 |
default:
|
|
|
3408 |
GST_WARNING_OBJECT (avi,
|
|
|
3409 |
"Skipping unknown list tag %" GST_FOURCC_FORMAT,
|
|
|
3410 |
GST_FOURCC_ARGS (ltag));
|
|
|
3411 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
3412 |
break;
|
|
|
3413 |
}
|
|
|
3414 |
}
|
|
|
3415 |
break;
|
|
|
3416 |
default:
|
|
|
3417 |
GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
|
|
|
3418 |
GST_FOURCC_ARGS (tag));
|
|
|
3419 |
/* Fall-through */
|
|
|
3420 |
case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
|
|
|
3421 |
case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
|
|
|
3422 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
3423 |
break;
|
|
|
3424 |
}
|
|
|
3425 |
} while (1);
|
|
|
3426 |
skipping_done:
|
|
|
3427 |
|
|
|
3428 |
GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
|
|
|
3429 |
avi->num_streams, avi->stream[0].indexes);
|
|
|
3430 |
|
|
|
3431 |
/* create or read stream index (for seeking) */
|
|
|
3432 |
if (avi->stream[0].indexes != NULL) {
|
|
|
3433 |
/* we read a super index already (gst_avi_demux_parse_superindex() ) */
|
|
|
3434 |
gst_avi_demux_read_subindexes_pull (avi, &index, &alloc);
|
|
|
3435 |
}
|
|
|
3436 |
if (!index) {
|
|
|
3437 |
if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
|
|
|
3438 |
gst_avi_demux_stream_index (avi, &index, &alloc);
|
|
|
3439 |
}
|
|
|
3440 |
/* some indexes are incomplete, continue streaming from there */
|
|
|
3441 |
if (!index)
|
|
|
3442 |
gst_avi_demux_stream_scan (avi, &index, &alloc);
|
|
|
3443 |
}
|
|
|
3444 |
|
|
|
3445 |
/* this is a fatal error */
|
|
|
3446 |
if (!index)
|
|
|
3447 |
goto no_index;
|
|
|
3448 |
|
|
|
3449 |
if (!gst_avi_demux_massage_index (avi, index, alloc))
|
|
|
3450 |
goto no_index;
|
|
|
3451 |
|
|
|
3452 |
gst_avi_demux_calculate_durations_from_index (avi);
|
|
|
3453 |
|
|
|
3454 |
/* create initial NEWSEGMENT event */
|
|
|
3455 |
if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
|
|
|
3456 |
stop = avi->segment.duration;
|
|
|
3457 |
|
|
|
3458 |
GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
|
|
|
3459 |
|
|
|
3460 |
if (avi->seek_event)
|
|
|
3461 |
gst_event_unref (avi->seek_event);
|
|
|
3462 |
avi->seek_event = gst_event_new_new_segment
|
|
|
3463 |
(FALSE, avi->segment.rate, GST_FORMAT_TIME,
|
|
|
3464 |
avi->segment.start, stop, avi->segment.start);
|
|
|
3465 |
|
|
|
3466 |
/* at this point we know all the streams and we can signal the no more
|
|
|
3467 |
* pads signal */
|
|
|
3468 |
GST_DEBUG_OBJECT (avi, "signaling no more pads");
|
|
|
3469 |
gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
|
|
|
3470 |
|
|
|
3471 |
return GST_FLOW_OK;
|
|
|
3472 |
|
|
|
3473 |
/* ERRORS */
|
|
|
3474 |
no_list:
|
|
|
3475 |
{
|
|
|
3476 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3477 |
("Invalid AVI header (no LIST at start): %"
|
|
|
3478 |
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
|
3479 |
gst_buffer_unref (buf);
|
|
|
3480 |
return GST_FLOW_ERROR;
|
|
|
3481 |
}
|
|
|
3482 |
no_header:
|
|
|
3483 |
{
|
|
|
3484 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3485 |
("Invalid AVI header (no hdrl at start): %"
|
|
|
3486 |
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
|
3487 |
gst_buffer_unref (buf);
|
|
|
3488 |
return GST_FLOW_ERROR;
|
|
|
3489 |
}
|
|
|
3490 |
no_avih:
|
|
|
3491 |
{
|
|
|
3492 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3493 |
("Invalid AVI header (no avih at start): %"
|
|
|
3494 |
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
|
3495 |
if (sub)
|
|
|
3496 |
gst_buffer_unref (sub);
|
|
|
3497 |
gst_buffer_unref (buf);
|
|
|
3498 |
return GST_FLOW_ERROR;
|
|
|
3499 |
}
|
|
|
3500 |
invalid_avih:
|
|
|
3501 |
{
|
|
|
3502 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3503 |
("Invalid AVI header (cannot parse avih at start)"));
|
|
|
3504 |
gst_buffer_unref (buf);
|
|
|
3505 |
return GST_FLOW_ERROR;
|
|
|
3506 |
}
|
|
|
3507 |
no_streams:
|
|
|
3508 |
{
|
|
|
3509 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
|
|
|
3510 |
return GST_FLOW_ERROR;
|
|
|
3511 |
}
|
|
|
3512 |
no_index:
|
|
|
3513 |
{
|
|
|
3514 |
GST_WARNING ("file without or too big index");
|
|
|
3515 |
g_list_free (index);
|
|
|
3516 |
g_list_foreach (alloc, (GFunc) g_free, NULL);
|
|
|
3517 |
g_list_free (alloc);
|
|
|
3518 |
|
|
|
3519 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3520 |
("Could not get/create index"));
|
|
|
3521 |
return GST_FLOW_ERROR;
|
|
|
3522 |
}
|
|
|
3523 |
pull_range_failed:
|
|
|
3524 |
{
|
|
|
3525 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
|
3526 |
("pull_range flow reading header: %s", gst_flow_get_name (res)));
|
|
|
3527 |
return GST_FLOW_ERROR;
|
|
|
3528 |
}
|
|
|
3529 |
}
|
|
|
3530 |
|
|
|
3531 |
/*
|
|
|
3532 |
* Do the actual seeking.
|
|
|
3533 |
*/
|
|
|
3534 |
static gboolean
|
|
|
3535 |
gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
|
|
|
3536 |
{
|
|
|
3537 |
GstClockTime seek_time;
|
|
|
3538 |
gboolean keyframe;
|
|
|
3539 |
gst_avi_index_entry *entry, *kentry;
|
|
|
3540 |
gint old_entry;
|
|
|
3541 |
|
|
|
3542 |
seek_time = segment->last_stop;
|
|
|
3543 |
keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
|
|
|
3544 |
|
|
|
3545 |
/* FIXME: if we seek in an openDML file, we will have multiple
|
|
|
3546 |
* primary levels. Seeking in between those will cause havoc. */
|
|
|
3547 |
|
|
|
3548 |
/* save old position so we can see if we must mark a discont. */
|
|
|
3549 |
old_entry = avi->current_entry;
|
|
|
3550 |
|
|
|
3551 |
/* get the entry for the requested position, which is always in last_stop.
|
|
|
3552 |
* we search the index entry for stream 0, since all entries are sorted by
|
|
|
3553 |
* time and stream we automagically are positioned for the other streams as
|
|
|
3554 |
* well. FIXME, this code assumes the main stream with keyframes is stream 0,
|
|
|
3555 |
* which is mostly correct... */
|
|
|
3556 |
if (!(entry = gst_avi_demux_index_entry_for_time (avi, 0, seek_time)))
|
|
|
3557 |
goto no_entry;
|
|
|
3558 |
|
|
|
3559 |
GST_DEBUG_OBJECT (avi,
|
|
|
3560 |
"Got requested entry %d [stream:%d / ts:%" GST_TIME_FORMAT
|
|
|
3561 |
" / duration:%" GST_TIME_FORMAT "]", entry->index_nr,
|
|
|
3562 |
entry->stream_nr, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
|
|
|
3563 |
|
|
|
3564 |
/* check if we are already on a keyframe */
|
|
|
3565 |
if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)) {
|
|
|
3566 |
/* now go to the previous keyframe, this is where we should start
|
|
|
3567 |
* decoding from. */
|
|
|
3568 |
if (!(kentry = gst_avi_demux_index_prev (avi, 0, entry->index_nr,
|
|
|
3569 |
GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))) {
|
|
|
3570 |
goto no_entry;
|
|
|
3571 |
}
|
|
|
3572 |
} else {
|
|
|
3573 |
/* we were on a keyframe */
|
|
|
3574 |
kentry = entry;
|
|
|
3575 |
}
|
|
|
3576 |
|
|
|
3577 |
GST_DEBUG_OBJECT (avi,
|
|
|
3578 |
"Got keyframe entry %d [stream:%d / ts:%" GST_TIME_FORMAT
|
|
|
3579 |
" / duration:%" GST_TIME_FORMAT "]", kentry->index_nr,
|
|
|
3580 |
entry->stream_nr, GST_TIME_ARGS (kentry->ts),
|
|
|
3581 |
GST_TIME_ARGS (kentry->dur));
|
|
|
3582 |
|
|
|
3583 |
/* we must start decoding at the keyframe */
|
|
|
3584 |
avi->current_entry = kentry->index_nr;
|
|
|
3585 |
|
|
|
3586 |
if (segment->rate < 0.0) {
|
|
|
3587 |
gst_avi_index_entry *next_keyframe;
|
|
|
3588 |
|
|
|
3589 |
/* Because we don't know the frame order we need to push from the prev keyframe
|
|
|
3590 |
* to the next keyframe. If there is a smart decoder downstream he will notice
|
|
|
3591 |
* that there are too many encoded frames send and return UNEXPECTED when there
|
|
|
3592 |
* are enough decoded frames to fill the segment.
|
|
|
3593 |
*/
|
|
|
3594 |
next_keyframe =
|
|
|
3595 |
gst_avi_demux_index_next (avi, 0, kentry->index_nr,
|
|
|
3596 |
GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
|
|
|
3597 |
if (!next_keyframe)
|
|
|
3598 |
next_keyframe = gst_avi_demux_index_last (avi, 0);
|
|
|
3599 |
|
|
|
3600 |
avi->reverse_start_index = kentry->index_nr;
|
|
|
3601 |
avi->reverse_stop_index = next_keyframe->index_nr;
|
|
|
3602 |
|
|
|
3603 |
GST_DEBUG_OBJECT (avi, "reverse seek: start idx (%d) and stop idx (%d)",
|
|
|
3604 |
avi->reverse_start_index, avi->reverse_stop_index);
|
|
|
3605 |
}
|
|
|
3606 |
|
|
|
3607 |
if (keyframe) {
|
|
|
3608 |
/* when seeking to a keyframe, we update the result seek time
|
|
|
3609 |
* to the time of the keyframe. */
|
|
|
3610 |
seek_time = avi->index_entries[avi->current_entry].ts;
|
|
|
3611 |
}
|
|
|
3612 |
|
|
|
3613 |
next:
|
|
|
3614 |
/* if we changed position, mark a DISCONT on all streams */
|
|
|
3615 |
if (avi->current_entry != old_entry) {
|
|
|
3616 |
gint i;
|
|
|
3617 |
|
|
|
3618 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
3619 |
avi->stream[i].discont = TRUE;
|
|
|
3620 |
}
|
|
|
3621 |
}
|
|
|
3622 |
|
|
|
3623 |
GST_DEBUG_OBJECT (avi, "seek: %" GST_TIME_FORMAT
|
|
|
3624 |
" keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
|
|
|
3625 |
|
|
|
3626 |
/* the seek time is also the last_stop and stream time */
|
|
|
3627 |
segment->last_stop = seek_time;
|
|
|
3628 |
segment->time = seek_time;
|
|
|
3629 |
|
|
|
3630 |
return TRUE;
|
|
|
3631 |
|
|
|
3632 |
no_entry:
|
|
|
3633 |
{
|
|
|
3634 |
/* we could not find an entry for the given time */
|
|
|
3635 |
GST_WARNING_OBJECT (avi,
|
|
|
3636 |
"Couldn't find AviIndexEntry for time:%" GST_TIME_FORMAT,
|
|
|
3637 |
GST_TIME_ARGS (seek_time));
|
|
|
3638 |
if (avi->current_entry >= avi->index_size && avi->index_size > 0)
|
|
|
3639 |
avi->current_entry = avi->index_size - 1;
|
|
|
3640 |
|
|
|
3641 |
goto next;
|
|
|
3642 |
}
|
|
|
3643 |
}
|
|
|
3644 |
|
|
|
3645 |
/*
|
|
|
3646 |
* Handle seek event.
|
|
|
3647 |
*/
|
|
|
3648 |
static gboolean
|
|
|
3649 |
gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
|
|
|
3650 |
{
|
|
|
3651 |
gdouble rate;
|
|
|
3652 |
GstFormat format;
|
|
|
3653 |
GstSeekFlags flags;
|
|
|
3654 |
GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
|
|
|
3655 |
gint64 cur, stop;
|
|
|
3656 |
gboolean flush;
|
|
|
3657 |
gboolean update;
|
|
|
3658 |
GstSegment seeksegment = { 0, };
|
|
|
3659 |
|
|
|
3660 |
if (event) {
|
|
|
3661 |
GST_DEBUG_OBJECT (avi, "doing seek with event");
|
|
|
3662 |
|
|
|
3663 |
gst_event_parse_seek (event, &rate, &format, &flags,
|
|
|
3664 |
&cur_type, &cur, &stop_type, &stop);
|
|
|
3665 |
|
|
|
3666 |
/* we have to have a format as the segment format. Try to convert
|
|
|
3667 |
* if not. */
|
|
|
3668 |
if (format != GST_FORMAT_TIME) {
|
|
|
3669 |
GstFormat fmt = GST_FORMAT_TIME;
|
|
|
3670 |
gboolean res = TRUE;
|
|
|
3671 |
|
|
|
3672 |
if (cur_type != GST_SEEK_TYPE_NONE)
|
|
|
3673 |
res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
|
|
|
3674 |
if (res && stop_type != GST_SEEK_TYPE_NONE)
|
|
|
3675 |
res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
|
|
|
3676 |
if (!res)
|
|
|
3677 |
goto no_format;
|
|
|
3678 |
|
|
|
3679 |
format = fmt;
|
|
|
3680 |
}
|
|
|
3681 |
GST_DEBUG_OBJECT (avi,
|
|
|
3682 |
"seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
|
|
|
3683 |
GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
|
|
|
3684 |
/* FIXME: can we do anything with rate!=1.0 */
|
|
|
3685 |
} else {
|
|
|
3686 |
GST_DEBUG_OBJECT (avi, "doing seek without event");
|
|
|
3687 |
flags = 0;
|
|
|
3688 |
rate = 1.0;
|
|
|
3689 |
}
|
|
|
3690 |
|
|
|
3691 |
/* save flush flag */
|
|
|
3692 |
flush = flags & GST_SEEK_FLAG_FLUSH;
|
|
|
3693 |
|
|
|
3694 |
if (flush) {
|
|
|
3695 |
GstEvent *event = gst_event_new_flush_start ();
|
|
|
3696 |
|
|
|
3697 |
/* for a flushing seek, we send a flush_start on all pads. This will
|
|
|
3698 |
* eventually stop streaming with a WRONG_STATE. We can thus eventually
|
|
|
3699 |
* take the STREAM_LOCK. */
|
|
|
3700 |
GST_DEBUG_OBJECT (avi, "sending flush start");
|
|
|
3701 |
gst_avi_demux_push_event (avi, gst_event_ref (event));
|
|
|
3702 |
gst_pad_push_event (avi->sinkpad, event);
|
|
|
3703 |
} else {
|
|
|
3704 |
/* a non-flushing seek, we PAUSE the task so that we can take the
|
|
|
3705 |
* STREAM_LOCK */
|
|
|
3706 |
GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
|
|
|
3707 |
gst_pad_pause_task (avi->sinkpad);
|
|
|
3708 |
}
|
|
|
3709 |
|
|
|
3710 |
/* wait for streaming to stop */
|
|
|
3711 |
GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
|
|
|
3712 |
GST_PAD_STREAM_LOCK (avi->sinkpad);
|
|
|
3713 |
|
|
|
3714 |
/* copy segment, we need this because we still need the old
|
|
|
3715 |
* segment when we close the current segment. */
|
|
|
3716 |
memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
|
|
|
3717 |
|
|
|
3718 |
if (event) {
|
|
|
3719 |
GST_DEBUG_OBJECT (avi, "configuring seek");
|
|
|
3720 |
gst_segment_set_seek (&seeksegment, rate, format, flags,
|
|
|
3721 |
cur_type, cur, stop_type, stop, &update);
|
|
|
3722 |
}
|
|
|
3723 |
|
|
|
3724 |
/* do the seek, seeksegment.last_stop contains the new position, this
|
|
|
3725 |
* actually never fails. */
|
|
|
3726 |
gst_avi_demux_do_seek (avi, &seeksegment);
|
|
|
3727 |
|
|
|
3728 |
if (flush) {
|
|
|
3729 |
gint i;
|
|
|
3730 |
|
|
|
3731 |
GST_DEBUG_OBJECT (avi, "sending flush stop");
|
|
|
3732 |
gst_avi_demux_push_event (avi, gst_event_new_flush_stop ());
|
|
|
3733 |
gst_pad_push_event (avi->sinkpad, gst_event_new_flush_stop ());
|
|
|
3734 |
/* reset the last flow and mark discont, FLUSH is always DISCONT */
|
|
|
3735 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
3736 |
avi->stream[i].last_flow = GST_FLOW_OK;
|
|
|
3737 |
avi->stream[i].discont = TRUE;
|
|
|
3738 |
}
|
|
|
3739 |
} else if (avi->segment_running) {
|
|
|
3740 |
GstEvent *seg;
|
|
|
3741 |
|
|
|
3742 |
/* we are running the current segment and doing a non-flushing seek,
|
|
|
3743 |
* close the segment first based on the last_stop. */
|
|
|
3744 |
GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
|
|
|
3745 |
" to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
|
|
|
3746 |
seg = gst_event_new_new_segment (TRUE,
|
|
|
3747 |
avi->segment.rate, avi->segment.format,
|
|
|
3748 |
avi->segment.start, avi->segment.last_stop, avi->segment.time);
|
|
|
3749 |
gst_avi_demux_push_event (avi, seg);
|
|
|
3750 |
}
|
|
|
3751 |
|
|
|
3752 |
/* now update the real segment info */
|
|
|
3753 |
memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
|
|
|
3754 |
|
|
|
3755 |
/* post the SEGMENT_START message when we do segmented playback */
|
|
|
3756 |
if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
|
3757 |
gst_element_post_message (GST_ELEMENT (avi),
|
|
|
3758 |
gst_message_new_segment_start (GST_OBJECT (avi),
|
|
|
3759 |
avi->segment.format, avi->segment.last_stop));
|
|
|
3760 |
}
|
|
|
3761 |
|
|
|
3762 |
/* prepare for streaming again */
|
|
|
3763 |
if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
|
|
|
3764 |
stop = avi->segment.duration;
|
|
|
3765 |
|
|
|
3766 |
/* queue the segment event for the streaming thread. */
|
|
|
3767 |
if (avi->seek_event)
|
|
|
3768 |
gst_event_unref (avi->seek_event);
|
|
|
3769 |
if (avi->segment.rate > 0.0) {
|
|
|
3770 |
avi->seek_event = gst_event_new_new_segment (FALSE,
|
|
|
3771 |
avi->segment.rate, avi->segment.format,
|
|
|
3772 |
avi->segment.last_stop, stop, avi->segment.time);
|
|
|
3773 |
} else {
|
|
|
3774 |
avi->seek_event = gst_event_new_new_segment (FALSE,
|
|
|
3775 |
avi->segment.rate, avi->segment.format,
|
|
|
3776 |
avi->segment.start, avi->segment.last_stop, avi->segment.start);
|
|
|
3777 |
}
|
|
|
3778 |
|
|
|
3779 |
if (!avi->streaming) {
|
|
|
3780 |
avi->segment_running = TRUE;
|
|
|
3781 |
gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
|
|
|
3782 |
avi->sinkpad);
|
|
|
3783 |
}
|
|
|
3784 |
GST_PAD_STREAM_UNLOCK (avi->sinkpad);
|
|
|
3785 |
|
|
|
3786 |
return TRUE;
|
|
|
3787 |
|
|
|
3788 |
/* ERRORS */
|
|
|
3789 |
no_format:
|
|
|
3790 |
{
|
|
|
3791 |
GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
|
|
|
3792 |
return FALSE;
|
|
|
3793 |
}
|
|
|
3794 |
}
|
|
|
3795 |
|
|
|
3796 |
/*
|
|
|
3797 |
* Helper for gst_avi_demux_invert()
|
|
|
3798 |
*/
|
|
|
3799 |
static inline void
|
|
|
3800 |
swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
|
|
|
3801 |
{
|
|
|
3802 |
memcpy (tmp, d1, bytes);
|
|
|
3803 |
memcpy (d1, d2, bytes);
|
|
|
3804 |
memcpy (d2, tmp, bytes);
|
|
|
3805 |
}
|
|
|
3806 |
|
|
|
3807 |
|
|
|
3808 |
#define gst_avi_demux_is_uncompressed(fourcc) \
|
|
|
3809 |
(fourcc == GST_RIFF_DIB || \
|
|
|
3810 |
fourcc == GST_RIFF_rgb || \
|
|
|
3811 |
fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
|
|
|
3812 |
|
|
|
3813 |
/*
|
|
|
3814 |
* Invert DIB buffers... Takes existing buffer and
|
|
|
3815 |
* returns either the buffer or a new one (with old
|
|
|
3816 |
* one dereferenced).
|
|
|
3817 |
* FIXME: can't we preallocate tmp? and remember stride, bpp?
|
|
|
3818 |
*/
|
|
|
3819 |
static GstBuffer *
|
|
|
3820 |
gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
|
|
|
3821 |
{
|
|
|
3822 |
GstStructure *s;
|
|
|
3823 |
gint y, w, h;
|
|
|
3824 |
gint bpp, stride;
|
|
|
3825 |
guint8 *tmp = NULL;
|
|
|
3826 |
|
|
|
3827 |
if (stream->strh->type != GST_RIFF_FCC_vids)
|
|
|
3828 |
return buf;
|
|
|
3829 |
|
|
|
3830 |
if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
|
|
|
3831 |
return buf; /* Ignore non DIB buffers */
|
|
|
3832 |
}
|
|
|
3833 |
|
|
|
3834 |
s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
|
|
|
3835 |
if (!gst_structure_get_int (s, "bpp", &bpp)) {
|
|
|
3836 |
GST_WARNING ("Failed to retrieve depth from caps");
|
|
|
3837 |
return buf;
|
|
|
3838 |
}
|
|
|
3839 |
|
|
|
3840 |
if (stream->strf.vids == NULL) {
|
|
|
3841 |
GST_WARNING ("Failed to retrieve vids for stream");
|
|
|
3842 |
return buf;
|
|
|
3843 |
}
|
|
|
3844 |
|
|
|
3845 |
h = stream->strf.vids->height;
|
|
|
3846 |
w = stream->strf.vids->width;
|
|
|
3847 |
stride = w * (bpp / 8);
|
|
|
3848 |
|
|
|
3849 |
buf = gst_buffer_make_writable (buf);
|
|
|
3850 |
if (GST_BUFFER_SIZE (buf) < (stride * h)) {
|
|
|
3851 |
GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
|
|
|
3852 |
return buf;
|
|
|
3853 |
}
|
|
|
3854 |
|
|
|
3855 |
tmp = g_malloc (stride);
|
|
|
3856 |
|
|
|
3857 |
for (y = 0; y < h / 2; y++) {
|
|
|
3858 |
swap_line (GST_BUFFER_DATA (buf) + stride * y,
|
|
|
3859 |
GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
|
|
|
3860 |
}
|
|
|
3861 |
|
|
|
3862 |
g_free (tmp);
|
|
|
3863 |
|
|
|
3864 |
return buf;
|
|
|
3865 |
}
|
|
|
3866 |
|
|
|
3867 |
/*
|
|
|
3868 |
* Returns the aggregated GstFlowReturn.
|
|
|
3869 |
*/
|
|
|
3870 |
static GstFlowReturn
|
|
|
3871 |
gst_avi_demux_combine_flows (GstAviDemux * avi, avi_stream_context * stream,
|
|
|
3872 |
GstFlowReturn ret)
|
|
|
3873 |
{
|
|
|
3874 |
guint i;
|
|
|
3875 |
|
|
|
3876 |
/* store the value */
|
|
|
3877 |
stream->last_flow = ret;
|
|
|
3878 |
|
|
|
3879 |
/* any other error that is not-linked can be returned right away */
|
|
|
3880 |
if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
|
|
|
3881 |
goto done;
|
|
|
3882 |
|
|
|
3883 |
/* only return NOT_LINKED if all other pads returned NOT_LINKED */
|
|
|
3884 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
3885 |
avi_stream_context *ostream = &avi->stream[i];
|
|
|
3886 |
|
|
|
3887 |
ret = ostream->last_flow;
|
|
|
3888 |
/* some other return value (must be SUCCESS but we can return
|
|
|
3889 |
* other values as well) */
|
|
|
3890 |
if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
|
|
|
3891 |
goto done;
|
|
|
3892 |
}
|
|
|
3893 |
/* if we get here, all other pads were unlinked and we return
|
|
|
3894 |
* NOT_LINKED then */
|
|
|
3895 |
done:
|
|
|
3896 |
GST_LOG_OBJECT (avi, "combined return %s", gst_flow_get_name (ret));
|
|
|
3897 |
return ret;
|
|
|
3898 |
}
|
|
|
3899 |
|
|
|
3900 |
/*
|
|
|
3901 |
* prepare the avi element for a reverse jump to a prev keyframe
|
|
|
3902 |
* this function will return the start entry. if the function returns
|
|
|
3903 |
* NULL there was no prev keyframe.
|
|
|
3904 |
*/
|
|
|
3905 |
static gst_avi_index_entry *
|
|
|
3906 |
gst_avi_demux_step_reverse (GstAviDemux * avi)
|
|
|
3907 |
{
|
|
|
3908 |
gst_avi_index_entry *entry;
|
|
|
3909 |
gint i;
|
|
|
3910 |
|
|
|
3911 |
avi->reverse_stop_index = avi->reverse_start_index;
|
|
|
3912 |
entry =
|
|
|
3913 |
gst_avi_demux_index_prev (avi, 0, avi->reverse_stop_index,
|
|
|
3914 |
GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
|
|
|
3915 |
if (!entry) {
|
|
|
3916 |
GST_DEBUG_OBJECT (avi, "no valid index entry found index %d",
|
|
|
3917 |
avi->reverse_stop_index);
|
|
|
3918 |
return NULL;
|
|
|
3919 |
}
|
|
|
3920 |
avi->current_entry = avi->reverse_start_index = entry->index_nr;
|
|
|
3921 |
GST_DEBUG_OBJECT (avi,
|
|
|
3922 |
"reverse playback jump: start idx (%d) and stop idx (%d)",
|
|
|
3923 |
avi->reverse_start_index, avi->reverse_stop_index);
|
|
|
3924 |
gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
|
|
|
3925 |
for (i = 0; i < avi->num_streams; i++) {
|
|
|
3926 |
avi->stream[i].last_flow = GST_FLOW_OK;
|
|
|
3927 |
avi->stream[i].discont = TRUE;
|
|
|
3928 |
}
|
|
|
3929 |
return entry;
|
|
|
3930 |
}
|
|
|
3931 |
|
|
|
3932 |
/*
|
|
|
3933 |
* Read data from one index entry
|
|
|
3934 |
*/
|
|
|
3935 |
static GstFlowReturn
|
|
|
3936 |
gst_avi_demux_process_next_entry (GstAviDemux * avi)
|
|
|
3937 |
{
|
|
|
3938 |
GstFlowReturn res = GST_FLOW_OK;
|
|
|
3939 |
gboolean processed = FALSE;
|
|
|
3940 |
avi_stream_context *stream;
|
|
|
3941 |
gst_avi_index_entry *entry;
|
|
|
3942 |
GstBuffer *buf;
|
|
|
3943 |
|
|
|
3944 |
do {
|
|
|
3945 |
/* see if we are at the end */
|
|
|
3946 |
if ((avi->segment.rate > 0 && avi->current_entry >= avi->index_size))
|
|
|
3947 |
goto eos;
|
|
|
3948 |
|
|
|
3949 |
/* get next entry, this will work as we checked for the index size above */
|
|
|
3950 |
entry = &avi->index_entries[avi->current_entry++];
|
|
|
3951 |
|
|
|
3952 |
/* check for reverse playback */
|
|
|
3953 |
if (avi->segment.rate < 0 && avi->current_entry > avi->reverse_stop_index) {
|
|
|
3954 |
GST_LOG_OBJECT (avi, "stop_index %d reached", avi->reverse_stop_index);
|
|
|
3955 |
|
|
|
3956 |
/* check if we have pushed enough data for this segment */
|
|
|
3957 |
if (avi->reverse_start_index == 0)
|
|
|
3958 |
goto eos_reverse_zero;
|
|
|
3959 |
if (avi->index_entries[avi->reverse_start_index].ts < avi->segment.start)
|
|
|
3960 |
goto eos_reverse_segment;
|
|
|
3961 |
|
|
|
3962 |
if (!(entry = gst_avi_demux_step_reverse (avi)))
|
|
|
3963 |
goto eos;
|
|
|
3964 |
|
|
|
3965 |
avi->current_entry++;
|
|
|
3966 |
}
|
|
|
3967 |
|
|
|
3968 |
/* see if we have a valid stream, ignore if not
|
|
|
3969 |
* FIXME: can't we check this when building the index?
|
|
|
3970 |
* we check it in _parse_index(), _stream_scan()
|
|
|
3971 |
*/
|
|
|
3972 |
if (entry->stream_nr >= avi->num_streams) {
|
|
|
3973 |
GST_WARNING_OBJECT (avi,
|
|
|
3974 |
"Entry %d has non-existing stream nr %d",
|
|
|
3975 |
avi->current_entry - 1, entry->stream_nr);
|
|
|
3976 |
continue;
|
|
|
3977 |
}
|
|
|
3978 |
|
|
|
3979 |
/* get stream now */
|
|
|
3980 |
stream = &avi->stream[entry->stream_nr];
|
|
|
3981 |
|
|
|
3982 |
if (avi->segment.rate > 0.0) {
|
|
|
3983 |
/* only check this for fowards playback for now */
|
|
|
3984 |
if ((entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
|
|
|
3985 |
&& GST_CLOCK_TIME_IS_VALID (entry->ts)
|
|
|
3986 |
&& GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
|
|
|
3987 |
&& (entry->ts > avi->segment.stop)) {
|
|
|
3988 |
goto eos_stop;
|
|
|
3989 |
}
|
|
|
3990 |
}
|
|
|
3991 |
|
|
|
3992 |
/* skip empty entries */
|
|
|
3993 |
if (entry->size == 0 || !stream->pad) {
|
|
|
3994 |
GST_DEBUG_OBJECT (avi, "Skipping entry %d (%d, %p)",
|
|
|
3995 |
avi->current_entry - 1, entry->size, stream->pad);
|
|
|
3996 |
goto next;
|
|
|
3997 |
}
|
|
|
3998 |
|
|
|
3999 |
GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
|
|
|
4000 |
G_GUINT64_FORMAT " (%llx)", entry->size, entry->stream_nr,
|
|
|
4001 |
avi->index_offset + entry->offset, avi->index_offset + entry->offset);
|
|
|
4002 |
|
|
|
4003 |
/* pull in the data */
|
|
|
4004 |
res = gst_pad_pull_range (avi->sinkpad, entry->offset +
|
|
|
4005 |
avi->index_offset, entry->size, &buf);
|
|
|
4006 |
if (res != GST_FLOW_OK)
|
|
|
4007 |
goto pull_failed;
|
|
|
4008 |
|
|
|
4009 |
/* check for short buffers, this is EOS as well */
|
|
|
4010 |
if (GST_BUFFER_SIZE (buf) < entry->size)
|
|
|
4011 |
goto short_buffer;
|
|
|
4012 |
|
|
|
4013 |
/* invert the picture if needed */
|
|
|
4014 |
buf = gst_avi_demux_invert (stream, buf);
|
|
|
4015 |
|
|
|
4016 |
/* mark non-keyframes */
|
|
|
4017 |
if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))
|
|
|
4018 |
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
|
4019 |
|
|
|
4020 |
GST_BUFFER_TIMESTAMP (buf) = entry->ts;
|
|
|
4021 |
GST_BUFFER_DURATION (buf) = entry->dur;
|
|
|
4022 |
if (stream->strh->type == GST_RIFF_FCC_vids) {
|
|
|
4023 |
if (stream->current_frame >= 0)
|
|
|
4024 |
GST_BUFFER_OFFSET (buf) = stream->current_frame;
|
|
|
4025 |
else {
|
|
|
4026 |
gint64 framenum;
|
|
|
4027 |
GstFormat fmt = GST_FORMAT_DEFAULT;
|
|
|
4028 |
|
|
|
4029 |
if (gst_pad_query_convert (stream->pad, GST_FORMAT_TIME, entry->ts,
|
|
|
4030 |
&fmt, &framenum))
|
|
|
4031 |
GST_BUFFER_OFFSET (buf) = framenum;
|
|
|
4032 |
else
|
|
|
4033 |
GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
|
|
|
4034 |
}
|
|
|
4035 |
} else
|
|
|
4036 |
GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
|
|
|
4037 |
GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
|
|
|
4038 |
gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
|
|
|
4039 |
|
|
|
4040 |
GST_DEBUG_OBJECT (avi, "Pushing buffer of size %d, offset %"
|
|
|
4041 |
G_GUINT64_FORMAT " and time %"
|
|
|
4042 |
GST_TIME_FORMAT " on pad %s",
|
|
|
4043 |
GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf),
|
|
|
4044 |
GST_TIME_ARGS (entry->ts), GST_PAD_NAME (stream->pad));
|
|
|
4045 |
|
|
|
4046 |
/* update current position in the segment */
|
|
|
4047 |
gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
|
|
|
4048 |
|
|
|
4049 |
/* mark discont when pending */
|
|
|
4050 |
if (stream->discont) {
|
|
|
4051 |
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
|
|
4052 |
stream->discont = FALSE;
|
|
|
4053 |
}
|
|
|
4054 |
|
|
|
4055 |
res = gst_pad_push (stream->pad, buf);
|
|
|
4056 |
|
|
|
4057 |
/* mark as processed, we increment the frame and byte counters then
|
|
|
4058 |
* leave the while loop and return the GstFlowReturn */
|
|
|
4059 |
processed = TRUE;
|
|
|
4060 |
GST_DEBUG_OBJECT (avi, "Processed buffer %d: %s", entry->index_nr,
|
|
|
4061 |
gst_flow_get_name (res));
|
|
|
4062 |
|
|
|
4063 |
if (avi->segment.rate < 0
|
|
|
4064 |
&& entry->ts > avi->segment.stop && res == GST_FLOW_UNEXPECTED) {
|
|
|
4065 |
/* In reverse playback we can get a GST_FLOW_UNEXPECTED when
|
|
|
4066 |
* we are at the end of the segment, so we just need to jump
|
|
|
4067 |
* back to the previous section.
|
|
|
4068 |
*/
|
|
|
4069 |
GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
|
|
|
4070 |
|
|
|
4071 |
if (!(entry = gst_avi_demux_step_reverse (avi)))
|
|
|
4072 |
goto eos;
|
|
|
4073 |
|
|
|
4074 |
res = GST_FLOW_OK;
|
|
|
4075 |
|
|
|
4076 |
stream->current_frame = entry->frames_before;
|
|
|
4077 |
stream->current_byte = entry->bytes_before;
|
|
|
4078 |
|
|
|
4079 |
continue;
|
|
|
4080 |
}
|
|
|
4081 |
|
|
|
4082 |
/* combine flows */
|
|
|
4083 |
res = gst_avi_demux_combine_flows (avi, stream, res);
|
|
|
4084 |
|
|
|
4085 |
next:
|
|
|
4086 |
stream->current_frame = entry->frames_before + 1;
|
|
|
4087 |
stream->current_byte = entry->bytes_before + entry->size;
|
|
|
4088 |
} while (!processed);
|
|
|
4089 |
|
|
|
4090 |
beach:
|
|
|
4091 |
GST_DEBUG_OBJECT (avi, "returning %s", gst_flow_get_name (res));
|
|
|
4092 |
|
|
|
4093 |
return res;
|
|
|
4094 |
|
|
|
4095 |
/* ERRORS */
|
|
|
4096 |
eos:
|
|
|
4097 |
{
|
|
|
4098 |
GST_LOG_OBJECT (avi, "Handled last index entry, setting EOS (%d > %d)",
|
|
|
4099 |
avi->current_entry, avi->index_size);
|
|
|
4100 |
/* we mark the first stream as EOS */
|
|
|
4101 |
res = GST_FLOW_UNEXPECTED;
|
|
|
4102 |
goto beach;
|
|
|
4103 |
}
|
|
|
4104 |
eos_stop:
|
|
|
4105 |
{
|
|
|
4106 |
GST_LOG_OBJECT (avi, "Found keyframe after segment,"
|
|
|
4107 |
" setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
|
|
|
4108 |
GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (avi->segment.stop));
|
|
|
4109 |
res = GST_FLOW_UNEXPECTED;
|
|
|
4110 |
goto beach;
|
|
|
4111 |
}
|
|
|
4112 |
eos_reverse_zero:
|
|
|
4113 |
{
|
|
|
4114 |
GST_DEBUG_OBJECT (avi, "start_index was 0, setting EOS");
|
|
|
4115 |
res = GST_FLOW_UNEXPECTED;
|
|
|
4116 |
goto beach;
|
|
|
4117 |
}
|
|
|
4118 |
eos_reverse_segment:
|
|
|
4119 |
{
|
|
|
4120 |
GST_DEBUG_OBJECT (avi, "full segment pushed, setting EOS");
|
|
|
4121 |
res = GST_FLOW_UNEXPECTED;
|
|
|
4122 |
goto beach;
|
|
|
4123 |
}
|
|
|
4124 |
pull_failed:
|
|
|
4125 |
{
|
|
|
4126 |
GST_DEBUG_OBJECT (avi,
|
|
|
4127 |
"pull range failed: pos=%" G_GUINT64_FORMAT " size=%d",
|
|
|
4128 |
entry->offset + avi->index_offset, entry->size);
|
|
|
4129 |
goto beach;
|
|
|
4130 |
}
|
|
|
4131 |
short_buffer:
|
|
|
4132 |
{
|
|
|
4133 |
GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
|
|
|
4134 |
", only got %d/%d bytes (truncated file?)", entry->offset +
|
|
|
4135 |
avi->index_offset, GST_BUFFER_SIZE (buf), entry->size);
|
|
|
4136 |
gst_buffer_unref (buf);
|
|
|
4137 |
res = GST_FLOW_UNEXPECTED;
|
|
|
4138 |
goto beach;
|
|
|
4139 |
}
|
|
|
4140 |
}
|
|
|
4141 |
|
|
|
4142 |
/*
|
|
|
4143 |
* Read data. If we have an index it delegates to
|
|
|
4144 |
* gst_avi_demux_process_next_entry().
|
|
|
4145 |
*/
|
|
|
4146 |
static GstFlowReturn
|
|
|
4147 |
gst_avi_demux_stream_data (GstAviDemux * avi)
|
|
|
4148 |
{
|
|
|
4149 |
guint32 tag = 0;
|
|
|
4150 |
guint32 size = 0;
|
|
|
4151 |
gint stream_nr = 0;
|
|
|
4152 |
GstFlowReturn res = GST_FLOW_OK;
|
|
|
4153 |
GstFormat format = GST_FORMAT_TIME;
|
|
|
4154 |
|
|
|
4155 |
/* if we have a avi->index_entries[], we don't want to read
|
|
|
4156 |
* the stream linearly, but seek to the next ts/index_entry. */
|
|
|
4157 |
if (G_LIKELY (avi->index_entries != NULL))
|
|
|
4158 |
return gst_avi_demux_process_next_entry (avi);
|
|
|
4159 |
|
|
|
4160 |
if (G_UNLIKELY (avi->have_eos)) {
|
|
|
4161 |
/* Clean adapter, we're done */
|
|
|
4162 |
gst_adapter_clear (avi->adapter);
|
|
|
4163 |
return res;
|
|
|
4164 |
}
|
|
|
4165 |
|
|
|
4166 |
/*
|
|
|
4167 |
if (!gst_avi_demux_sync (avi, &tag, FALSE))
|
|
|
4168 |
return FALSE;
|
|
|
4169 |
*/
|
|
|
4170 |
|
|
|
4171 |
/* Iterate until need more data, so adapter won't grow too much */
|
|
|
4172 |
while (1) {
|
|
|
4173 |
if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
|
|
|
4174 |
return GST_FLOW_OK;
|
|
|
4175 |
}
|
|
|
4176 |
|
|
|
4177 |
GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
|
|
|
4178 |
GST_FOURCC_ARGS (tag), size);
|
|
|
4179 |
|
|
|
4180 |
if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
|
|
|
4181 |
((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
|
|
|
4182 |
GST_LOG ("Chunk ok");
|
|
|
4183 |
} else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
|
|
|
4184 |
GST_DEBUG ("Found sub-index tag");
|
|
|
4185 |
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
|
|
4186 |
if ((size > 0) && (size != -1)) {
|
|
|
4187 |
GST_DEBUG (" skipping %d bytes for now", size);
|
|
|
4188 |
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
|
|
4189 |
}
|
|
|
4190 |
}
|
|
|
4191 |
return GST_FLOW_OK;
|
|
|
4192 |
} else if (tag == GST_RIFF_TAG_JUNK) {
|
|
|
4193 |
GST_DEBUG ("JUNK chunk, skipping");
|
|
|
4194 |
} else if (tag == GST_RIFF_TAG_idx1) {
|
|
|
4195 |
GST_DEBUG ("Found index tag, stream done");
|
|
|
4196 |
avi->have_eos = TRUE;
|
|
|
4197 |
return GST_FLOW_UNEXPECTED;
|
|
|
4198 |
} else if (tag == GST_RIFF_TAG_LIST) {
|
|
|
4199 |
/* movi chunks might be grouped in rec list */
|
|
|
4200 |
if (gst_adapter_available (avi->adapter) >= 12) {
|
|
|
4201 |
GST_DEBUG ("Found LIST tag, skipping LIST header");
|
|
|
4202 |
gst_adapter_flush (avi->adapter, 12);
|
|
|
4203 |
continue;
|
|
|
4204 |
}
|
|
|
4205 |
return GST_FLOW_OK;
|
|
|
4206 |
} else if (tag == GST_RIFF_TAG_JUNK) {
|
|
|
4207 |
/* rec list might contain JUNK chunks */
|
|
|
4208 |
GST_DEBUG ("Found JUNK tag");
|
|
|
4209 |
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
|
|
4210 |
if ((size > 0) && (size != -1)) {
|
|
|
4211 |
GST_DEBUG (" skipping %d bytes for now", size);
|
|
|
4212 |
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
|
|
4213 |
continue;
|
|
|
4214 |
}
|
|
|
4215 |
}
|
|
|
4216 |
return GST_FLOW_OK;
|
|
|
4217 |
} else {
|
|
|
4218 |
GST_DEBUG ("No more stream chunks, send EOS");
|
|
|
4219 |
avi->have_eos = TRUE;
|
|
|
4220 |
return GST_FLOW_UNEXPECTED;
|
|
|
4221 |
}
|
|
|
4222 |
|
|
|
4223 |
if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
|
|
|
4224 |
if ((size == 0) || (size == -1))
|
|
|
4225 |
gst_adapter_flush (avi->adapter, 8);
|
|
|
4226 |
return GST_FLOW_OK;
|
|
|
4227 |
}
|
|
|
4228 |
GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
|
|
|
4229 |
GST_FOURCC_ARGS (tag), size);
|
|
|
4230 |
|
|
|
4231 |
stream_nr = CHUNKID_TO_STREAMNR (tag);
|
|
|
4232 |
|
|
|
4233 |
if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
|
|
|
4234 |
/* recoverable */
|
|
|
4235 |
GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
|
|
|
4236 |
stream_nr, GST_FOURCC_ARGS (tag));
|
|
|
4237 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
4238 |
gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
|
|
|
4239 |
} else {
|
|
|
4240 |
avi_stream_context *stream;
|
|
|
4241 |
GstClockTime next_ts = 0;
|
|
|
4242 |
GstBuffer *buf;
|
|
|
4243 |
|
|
|
4244 |
gst_adapter_flush (avi->adapter, 8);
|
|
|
4245 |
|
|
|
4246 |
/* get buffer */
|
|
|
4247 |
buf = gst_adapter_take_buffer (avi->adapter, ((size + 1) & ~1));
|
|
|
4248 |
/* patch the size */
|
|
|
4249 |
GST_BUFFER_SIZE (buf) = size;
|
|
|
4250 |
avi->offset += 8 + ((size + 1) & ~1);
|
|
|
4251 |
|
|
|
4252 |
stream = &avi->stream[stream_nr];
|
|
|
4253 |
|
|
|
4254 |
/* set delay (if any)
|
|
|
4255 |
if (stream->strh->init_frames == stream->current_frame &&
|
|
|
4256 |
stream->delay == 0)
|
|
|
4257 |
stream->delay = next_ts;
|
|
|
4258 |
*/
|
|
|
4259 |
|
|
|
4260 |
stream->current_frame++;
|
|
|
4261 |
stream->current_byte += size;
|
|
|
4262 |
|
|
|
4263 |
/* parsing of corresponding header may have failed */
|
|
|
4264 |
if (G_UNLIKELY (!stream->pad)) {
|
|
|
4265 |
GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
|
|
|
4266 |
GST_FOURCC_ARGS (tag));
|
|
|
4267 |
gst_buffer_unref (buf);
|
|
|
4268 |
} else {
|
|
|
4269 |
GstClockTime dur_ts = 0;
|
|
|
4270 |
|
|
|
4271 |
/* get time of this buffer */
|
|
|
4272 |
gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
|
|
|
4273 |
if (G_UNLIKELY (format != GST_FORMAT_TIME))
|
|
|
4274 |
goto wrong_format;
|
|
|
4275 |
|
|
|
4276 |
/* invert the picture if needed */
|
|
|
4277 |
buf = gst_avi_demux_invert (stream, buf);
|
|
|
4278 |
|
|
|
4279 |
gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
|
|
|
4280 |
if (G_UNLIKELY (format != GST_FORMAT_TIME))
|
|
|
4281 |
goto wrong_format;
|
|
|
4282 |
|
|
|
4283 |
GST_BUFFER_TIMESTAMP (buf) = next_ts;
|
|
|
4284 |
GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
|
|
|
4285 |
if (stream->strh->type == GST_RIFF_FCC_vids)
|
|
|
4286 |
GST_BUFFER_OFFSET (buf) = stream->current_frame - 1;
|
|
|
4287 |
else
|
|
|
4288 |
GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
|
|
|
4289 |
|
|
|
4290 |
gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
|
|
|
4291 |
GST_DEBUG_OBJECT (avi,
|
|
|
4292 |
"Pushing buffer with time=%" GST_TIME_FORMAT
|
|
|
4293 |
", offset %" G_GUINT64_FORMAT " and size %d over pad %s",
|
|
|
4294 |
GST_TIME_ARGS (next_ts), GST_BUFFER_OFFSET (buf), size,
|
|
|
4295 |
GST_PAD_NAME (stream->pad));
|
|
|
4296 |
|
|
|
4297 |
/* update current position in the segment */
|
|
|
4298 |
gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
|
|
|
4299 |
|
|
|
4300 |
/* mark discont when pending */
|
|
|
4301 |
if (G_UNLIKELY (stream->discont)) {
|
|
|
4302 |
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
|
|
4303 |
stream->discont = FALSE;
|
|
|
4304 |
}
|
|
|
4305 |
res = gst_pad_push (stream->pad, buf);
|
|
|
4306 |
|
|
|
4307 |
/* combine flows */
|
|
|
4308 |
res = gst_avi_demux_combine_flows (avi, stream, res);
|
|
|
4309 |
if (G_UNLIKELY (res != GST_FLOW_OK)) {
|
|
|
4310 |
GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
|
|
|
4311 |
return res;
|
|
|
4312 |
}
|
|
|
4313 |
}
|
|
|
4314 |
}
|
|
|
4315 |
}
|
|
|
4316 |
|
|
|
4317 |
done:
|
|
|
4318 |
return res;
|
|
|
4319 |
|
|
|
4320 |
/* ERRORS */
|
|
|
4321 |
wrong_format:
|
|
|
4322 |
{
|
|
|
4323 |
GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
|
|
|
4324 |
gst_format_get_name (format));
|
|
|
4325 |
res = GST_FLOW_ERROR;
|
|
|
4326 |
goto done;
|
|
|
4327 |
}
|
|
|
4328 |
}
|
|
|
4329 |
|
|
|
4330 |
/*
|
|
|
4331 |
* Send pending tags.
|
|
|
4332 |
*/
|
|
|
4333 |
static void
|
|
|
4334 |
push_tag_lists (GstAviDemux * avi)
|
|
|
4335 |
{
|
|
|
4336 |
guint i;
|
|
|
4337 |
|
|
|
4338 |
if (!avi->got_tags)
|
|
|
4339 |
return;
|
|
|
4340 |
|
|
|
4341 |
GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
|
|
|
4342 |
|
|
|
4343 |
for (i = 0; i < avi->num_streams; i++)
|
|
|
4344 |
if (avi->stream[i].pad && avi->stream[i].taglist) {
|
|
|
4345 |
GST_DEBUG_OBJECT (avi->stream[i].pad, "Tags: %" GST_PTR_FORMAT,
|
|
|
4346 |
avi->stream[i].taglist);
|
|
|
4347 |
gst_element_found_tags_for_pad (GST_ELEMENT (avi), avi->stream[i].pad,
|
|
|
4348 |
avi->stream[i].taglist);
|
|
|
4349 |
avi->stream[i].taglist = NULL;
|
|
|
4350 |
}
|
|
|
4351 |
|
|
|
4352 |
if (avi->globaltags == NULL)
|
|
|
4353 |
avi->globaltags = gst_tag_list_new ();
|
|
|
4354 |
|
|
|
4355 |
gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE,
|
|
|
4356 |
GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
|
|
|
4357 |
|
|
|
4358 |
GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, avi->globaltags);
|
|
|
4359 |
gst_element_found_tags (GST_ELEMENT (avi), avi->globaltags);
|
|
|
4360 |
avi->globaltags = NULL;
|
|
|
4361 |
avi->got_tags = FALSE;
|
|
|
4362 |
}
|
|
|
4363 |
|
|
|
4364 |
static void
|
|
|
4365 |
gst_avi_demux_loop (GstPad * pad)
|
|
|
4366 |
{
|
|
|
4367 |
GstFlowReturn res;
|
|
|
4368 |
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
|
|
4369 |
|
|
|
4370 |
switch (avi->state) {
|
|
|
4371 |
case GST_AVI_DEMUX_START:
|
|
|
4372 |
if (G_UNLIKELY ((res =
|
|
|
4373 |
gst_avi_demux_stream_init_pull (avi)) != GST_FLOW_OK)) {
|
|
|
4374 |
GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
|
|
|
4375 |
goto pause;
|
|
|
4376 |
}
|
|
|
4377 |
avi->state = GST_AVI_DEMUX_HEADER;
|
|
|
4378 |
/* fall-through */
|
|
|
4379 |
case GST_AVI_DEMUX_HEADER:
|
|
|
4380 |
if (G_UNLIKELY ((res =
|
|
|
4381 |
gst_avi_demux_stream_header_pull (avi)) != GST_FLOW_OK)) {
|
|
|
4382 |
GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
|
|
|
4383 |
goto pause;
|
|
|
4384 |
}
|
|
|
4385 |
avi->state = GST_AVI_DEMUX_MOVI;
|
|
|
4386 |
break;
|
|
|
4387 |
case GST_AVI_DEMUX_MOVI:
|
|
|
4388 |
if (G_UNLIKELY (avi->seek_event)) {
|
|
|
4389 |
gst_avi_demux_push_event (avi, avi->seek_event);
|
|
|
4390 |
avi->seek_event = NULL;
|
|
|
4391 |
}
|
|
|
4392 |
if (G_UNLIKELY (avi->got_tags)) {
|
|
|
4393 |
push_tag_lists (avi);
|
|
|
4394 |
}
|
|
|
4395 |
/* process each index entry in turn */
|
|
|
4396 |
res = gst_avi_demux_stream_data (avi);
|
|
|
4397 |
|
|
|
4398 |
/* pause when error */
|
|
|
4399 |
if (G_UNLIKELY (res != GST_FLOW_OK)) {
|
|
|
4400 |
GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
|
|
|
4401 |
goto pause;
|
|
|
4402 |
}
|
|
|
4403 |
break;
|
|
|
4404 |
default:
|
|
|
4405 |
GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
|
|
|
4406 |
res = GST_FLOW_ERROR;
|
|
|
4407 |
goto pause;
|
|
|
4408 |
}
|
|
|
4409 |
|
|
|
4410 |
GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
|
|
|
4411 |
|
|
|
4412 |
return;
|
|
|
4413 |
|
|
|
4414 |
/* ERRORS */
|
|
|
4415 |
pause:
|
|
|
4416 |
GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
|
|
|
4417 |
avi->segment_running = FALSE;
|
|
|
4418 |
gst_pad_pause_task (avi->sinkpad);
|
|
|
4419 |
|
|
|
4420 |
if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
|
|
|
4421 |
gboolean push_eos = TRUE;
|
|
|
4422 |
|
|
|
4423 |
if (res == GST_FLOW_UNEXPECTED) {
|
|
|
4424 |
/* handle end-of-stream/segment */
|
|
|
4425 |
if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
|
4426 |
gint64 stop;
|
|
|
4427 |
|
|
|
4428 |
if ((stop = avi->segment.stop) == -1)
|
|
|
4429 |
stop = avi->segment.duration;
|
|
|
4430 |
|
|
|
4431 |
GST_INFO_OBJECT (avi, "sending segment_done");
|
|
|
4432 |
|
|
|
4433 |
gst_element_post_message
|
|
|
4434 |
(GST_ELEMENT (avi),
|
|
|
4435 |
gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
|
|
|
4436 |
stop));
|
|
|
4437 |
push_eos = FALSE;
|
|
|
4438 |
}
|
|
|
4439 |
} else {
|
|
|
4440 |
/* for fatal errors we post an error message */
|
|
|
4441 |
GST_ELEMENT_ERROR (avi, STREAM, FAILED,
|
|
|
4442 |
(_("Internal data stream error.")),
|
|
|
4443 |
("streaming stopped, reason %s", gst_flow_get_name (res)));
|
|
|
4444 |
}
|
|
|
4445 |
if (push_eos) {
|
|
|
4446 |
GST_INFO_OBJECT (avi, "sending eos");
|
|
|
4447 |
if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
|
|
|
4448 |
(res == GST_FLOW_UNEXPECTED)) {
|
|
|
4449 |
GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
|
|
|
4450 |
(NULL), ("got eos but no streams (yet)"));
|
|
|
4451 |
}
|
|
|
4452 |
}
|
|
|
4453 |
}
|
|
|
4454 |
}
|
|
|
4455 |
|
|
|
4456 |
|
|
|
4457 |
static GstFlowReturn
|
|
|
4458 |
gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
|
|
|
4459 |
{
|
|
|
4460 |
GstFlowReturn res;
|
|
|
4461 |
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
|
|
4462 |
|
|
|
4463 |
GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
|
|
|
4464 |
gst_adapter_push (avi->adapter, buf);
|
|
|
4465 |
|
|
|
4466 |
switch (avi->state) {
|
|
|
4467 |
case GST_AVI_DEMUX_START:
|
|
|
4468 |
if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
|
|
|
4469 |
GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
|
|
|
4470 |
break;
|
|
|
4471 |
}
|
|
|
4472 |
break;
|
|
|
4473 |
case GST_AVI_DEMUX_HEADER:
|
|
|
4474 |
if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
|
|
|
4475 |
GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
|
|
|
4476 |
break;
|
|
|
4477 |
}
|
|
|
4478 |
break;
|
|
|
4479 |
case GST_AVI_DEMUX_MOVI:
|
|
|
4480 |
if (G_UNLIKELY (avi->seek_event)) {
|
|
|
4481 |
gst_avi_demux_push_event (avi, avi->seek_event);
|
|
|
4482 |
avi->seek_event = NULL;
|
|
|
4483 |
}
|
|
|
4484 |
if (G_UNLIKELY (avi->got_tags)) {
|
|
|
4485 |
push_tag_lists (avi);
|
|
|
4486 |
}
|
|
|
4487 |
res = gst_avi_demux_stream_data (avi);
|
|
|
4488 |
break;
|
|
|
4489 |
default:
|
|
|
4490 |
GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
|
|
|
4491 |
("Illegal internal state"));
|
|
|
4492 |
res = GST_FLOW_ERROR;
|
|
|
4493 |
break;
|
|
|
4494 |
}
|
|
|
4495 |
|
|
|
4496 |
GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
|
|
|
4497 |
gst_flow_get_name (res));
|
|
|
4498 |
|
|
|
4499 |
return res;
|
|
|
4500 |
}
|
|
|
4501 |
|
|
|
4502 |
static gboolean
|
|
|
4503 |
gst_avi_demux_sink_activate (GstPad * sinkpad)
|
|
|
4504 |
{
|
|
|
4505 |
if (gst_pad_check_pull_range (sinkpad)) {
|
|
|
4506 |
GST_DEBUG ("going to pull mode");
|
|
|
4507 |
return gst_pad_activate_pull (sinkpad, TRUE);
|
|
|
4508 |
} else {
|
|
|
4509 |
GST_DEBUG ("going to push (streaming) mode");
|
|
|
4510 |
return gst_pad_activate_push (sinkpad, TRUE);
|
|
|
4511 |
}
|
|
|
4512 |
}
|
|
|
4513 |
|
|
|
4514 |
static gboolean
|
|
|
4515 |
gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
|
|
|
4516 |
{
|
|
|
4517 |
GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
|
|
|
4518 |
|
|
|
4519 |
if (active) {
|
|
|
4520 |
avi->segment_running = TRUE;
|
|
|
4521 |
avi->streaming = FALSE;
|
|
|
4522 |
return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
|
|
|
4523 |
sinkpad);
|
|
|
4524 |
} else {
|
|
|
4525 |
avi->segment_running = FALSE;
|
|
|
4526 |
return gst_pad_stop_task (sinkpad);
|
|
|
4527 |
}
|
|
|
4528 |
}
|
|
|
4529 |
|
|
|
4530 |
static gboolean
|
|
|
4531 |
gst_avi_demux_activate_push (GstPad * pad, gboolean active)
|
|
|
4532 |
{
|
|
|
4533 |
GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
|
|
|
4534 |
|
|
|
4535 |
if (active) {
|
|
|
4536 |
GST_DEBUG ("avi: activating push/chain function");
|
|
|
4537 |
avi->streaming = TRUE;
|
|
|
4538 |
} else {
|
|
|
4539 |
GST_DEBUG ("avi: deactivating push/chain function");
|
|
|
4540 |
}
|
|
|
4541 |
|
|
|
4542 |
return TRUE;
|
|
|
4543 |
}
|
|
|
4544 |
|
|
|
4545 |
static GstStateChangeReturn
|
|
|
4546 |
gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
|
|
|
4547 |
{
|
|
|
4548 |
GstStateChangeReturn ret;
|
|
|
4549 |
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
|
|
4550 |
|
|
|
4551 |
switch (transition) {
|
|
|
4552 |
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
|
4553 |
avi->streaming = FALSE;
|
|
|
4554 |
gst_segment_init (&avi->segment, GST_FORMAT_TIME);
|
|
|
4555 |
break;
|
|
|
4556 |
default:
|
|
|
4557 |
break;
|
|
|
4558 |
}
|
|
|
4559 |
|
|
|
4560 |
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
4561 |
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
|
4562 |
goto done;
|
|
|
4563 |
|
|
|
4564 |
switch (transition) {
|
|
|
4565 |
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
|
4566 |
gst_avi_demux_reset (avi);
|
|
|
4567 |
break;
|
|
|
4568 |
default:
|
|
|
4569 |
break;
|
|
|
4570 |
}
|
|
|
4571 |
|
|
|
4572 |
done:
|
|
|
4573 |
return ret;
|
|
|
4574 |
}
|