--- a/gst_plugins_good/gst/avi/gstavidemux.c Tue Jul 06 14:35:10 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,4574 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
- * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-/* Element-Checklist-Version: 5 */
-
-/**
- * SECTION:element-avidemux
- *
- * Demuxes an .avi file into raw or compressed audio and/or video streams.
- *
- * This element supports both push and pull-based scheduling, depending on the
- * capabilities of the upstream elements.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
- * ]| Play (parse and decode) an .avi file and try to output it to
- * an automatically detected soundcard and videosink. If the AVI file contains
- * compressed audio or video data, this will only work if you have the
- * right decoder elements/plugins installed.
- * </refsect2>
- *
- * Last reviewed on 2006-12-29 (0.10.6)
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string.h>
-
-#include "gst/riff/riff-media.h"
-#include "gstavidemux.h"
-#include "avi-ids.h"
-#include <gst/gst-i18n-plugin.h>
-#include <gst/base/gstadapter.h>
-
-GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
-#define GST_CAT_DEFAULT avidemux_debug
-
-GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);
-
-static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("video/x-msvideo")
- );
-
-static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
-static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
-static void gst_avi_demux_init (GstAviDemux * avi);
-static void gst_avi_demux_finalize (GObject * object);
-
-static void gst_avi_demux_reset (GstAviDemux * avi);
-
-#if 0
-static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
-#endif
-static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
-static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
- GstEvent * event);
-static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
-
-#if 0
-static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
-#endif
-static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
-static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
-static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
- gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
-
-static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
-static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
- GstEvent * event);
-static void gst_avi_demux_loop (GstPad * pad);
-static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
-static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
- gboolean active);
-static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
-static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
-
-static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
- GstStateChange transition);
-
-static GstElementClass *parent_class = NULL;
-
-/* GObject methods */
-
-GType
-gst_avi_demux_get_type (void)
-{
- static GType avi_demux_type = 0;
-
- if (!avi_demux_type) {
- static const GTypeInfo avi_demux_info = {
- sizeof (GstAviDemuxClass),
- (GBaseInitFunc) gst_avi_demux_base_init,
- NULL,
- (GClassInitFunc) gst_avi_demux_class_init,
- NULL,
- NULL,
- sizeof (GstAviDemux),
- 0,
- (GInstanceInitFunc) gst_avi_demux_init,
- };
-
- avi_demux_type =
- g_type_register_static (GST_TYPE_ELEMENT,
- "GstAviDemux", &avi_demux_info, 0);
- }
-
- return avi_demux_type;
-}
-
-static void
-gst_avi_demux_base_init (GstAviDemuxClass * klass)
-{
- static const GstElementDetails gst_avi_demux_details =
- GST_ELEMENT_DETAILS ("Avi demuxer",
- "Codec/Demuxer",
- "Demultiplex an avi file into audio and video",
- "Erik Walthinsen <omega@cse.ogi.edu>\n"
- "Wim Taymans <wim.taymans@chello.be>\n"
- "Ronald Bultje <rbultje@ronald.bitfreak.net>\n"
- "Thijs Vermeir <thijsvermeir@gmail.com>");
- GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
- GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
- GstCaps *audcaps, *vidcaps, *subcaps;
-
- audcaps = gst_riff_create_audio_template_caps ();
- gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
- audiosrctempl = gst_pad_template_new ("audio_%02d",
- GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
-
- vidcaps = gst_riff_create_video_template_caps ();
- gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
- gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
- videosrctempl = gst_pad_template_new ("video_%02d",
- GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
-
- subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
- subsrctempl = gst_pad_template_new ("subtitle_%02d",
- GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
- gst_element_class_add_pad_template (element_class, audiosrctempl);
- gst_element_class_add_pad_template (element_class, videosrctempl);
- gst_element_class_add_pad_template (element_class, subsrctempl);
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&sink_templ));
- gst_element_class_set_details (element_class, &gst_avi_demux_details);
-}
-
-static void
-gst_avi_demux_class_init (GstAviDemuxClass * klass)
-{
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
- GObjectClass *gobject_class = (GObjectClass *) klass;
-
- GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
- 0, "Demuxer for AVI streams");
-
- parent_class = g_type_class_peek_parent (klass);
-
- gobject_class->finalize = gst_avi_demux_finalize;
- gstelement_class->change_state =
- GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
-}
-
-static void
-gst_avi_demux_init (GstAviDemux * avi)
-{
- avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
- gst_pad_set_activate_function (avi->sinkpad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
- gst_pad_set_activatepull_function (avi->sinkpad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
- gst_pad_set_activatepush_function (avi->sinkpad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
- gst_pad_set_chain_function (avi->sinkpad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
- gst_pad_set_event_function (avi->sinkpad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
- gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
-
- avi->adapter = gst_adapter_new ();
-
- gst_avi_demux_reset (avi);
-}
-
-static void
-gst_avi_demux_finalize (GObject * object)
-{
- GstAviDemux *avi = GST_AVI_DEMUX (object);
-
- GST_DEBUG ("AVI: finalize");
-
- g_object_unref (avi->adapter);
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_avi_demux_reset (GstAviDemux * avi)
-{
- gint i;
-
- GST_DEBUG ("AVI: reset");
-
- for (i = 0; i < avi->num_streams; i++) {
- g_free (avi->stream[i].strh);
- g_free (avi->stream[i].strf.data);
- if (avi->stream[i].name)
- g_free (avi->stream[i].name);
- if (avi->stream[i].initdata)
- gst_buffer_unref (avi->stream[i].initdata);
- if (avi->stream[i].extradata)
- gst_buffer_unref (avi->stream[i].extradata);
- if (avi->stream[i].pad) {
- gst_pad_set_active (avi->stream[i].pad, FALSE);
- gst_element_remove_pad (GST_ELEMENT (avi), avi->stream[i].pad);
- }
- if (avi->stream[i].taglist) {
- gst_tag_list_free (avi->stream[i].taglist);
- avi->stream[i].taglist = NULL;
- }
- }
- memset (&avi->stream, 0, sizeof (avi->stream));
-
- avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
- avi->num_streams = 0;
- avi->num_v_streams = 0;
- avi->num_a_streams = 0;
- avi->num_t_streams = 0;
-
- avi->state = GST_AVI_DEMUX_START;
- avi->offset = 0;
-
- g_free (avi->index_entries);
- avi->index_entries = NULL;
- avi->index_size = 0;
- avi->index_offset = 0;
- avi->current_entry = 0;
- g_free (avi->avih);
- avi->avih = NULL;
-
- if (avi->seek_event) {
- gst_event_unref (avi->seek_event);
- avi->seek_event = NULL;
- }
-
- if (avi->globaltags)
- gst_tag_list_free (avi->globaltags);
- avi->globaltags = NULL;
-
- avi->got_tags = TRUE; /* we always want to push global tags */
- avi->have_eos = FALSE;
-
- gst_adapter_clear (avi->adapter);
-
- gst_segment_init (&avi->segment, GST_FORMAT_TIME);
-}
-
-/* Index helper */
-static gst_avi_index_entry *
-gst_avi_demux_index_last (GstAviDemux * avi, gint stream_nr)
-{
- gint i;
- gst_avi_index_entry *result = NULL;
-
- for (i = avi->index_size - 1; i >= 0; i--) {
- if (avi->index_entries[i].stream_nr == stream_nr) {
- result = &avi->index_entries[i];
- break;
- }
- }
- return result;
-}
-
-static gst_avi_index_entry *
-gst_avi_demux_index_next (GstAviDemux * avi, gint stream_nr, gint last,
- guchar flags)
-{
- gint i;
- gst_avi_index_entry *result = NULL, *entry;
-
- for (i = last + 1; i < avi->index_size; i++) {
- entry = &avi->index_entries[i];
-
- if (entry->stream_nr != stream_nr)
- continue;
-
- if ((entry->flags & flags) == flags) {
- result = entry;
- break;
- }
- }
- return result;
-}
-
-static gst_avi_index_entry *
-gst_avi_demux_index_prev (GstAviDemux * avi, gint stream_nr, gint last,
- guchar flags)
-{
- gint i;
- gst_avi_index_entry *result = NULL, *entry;
-
- for (i = last - 1; i >= 0; i--) {
- entry = &avi->index_entries[i];
-
- if (entry->stream_nr != stream_nr)
- continue;
-
- if ((entry->flags & flags) == flags) {
- result = entry;
- break;
- }
- }
- return result;
-}
-
-static gint
-gst_avi_demux_index_entry_search (gst_avi_index_entry * entry, guint64 * time)
-{
- if (entry->ts < *time)
- return -1;
- else if (entry->ts > *time)
- return 1;
- return 0;
-}
-
-/*
- * gst_avi_index_entry:
- * @avi: Avi object
- * @stream_nr: stream number
- * @time: seek time position
- *
- * Finds the index entry which time is less or equal than the requested time.
- *
- * Returns: the found index entry or %NULL
- */
-static gst_avi_index_entry *
-gst_avi_demux_index_entry_for_time (GstAviDemux * avi,
- gint stream_nr, guint64 time)
-{
- gst_avi_index_entry *entry = NULL;
- guint n;
-
- GST_LOG_OBJECT (avi, "stream_nr:%d , time:%" GST_TIME_FORMAT,
- stream_nr, GST_TIME_ARGS (time));
-
- entry = gst_util_array_binary_search (avi->index_entries,
- avi->index_size,
- sizeof (gst_avi_index_entry),
- (GCompareDataFunc) gst_avi_demux_index_entry_search,
- GST_SEARCH_MODE_BEFORE, &time, NULL);
-
- n = entry - avi->index_entries;
- if (entry == NULL) {
- entry = &avi->index_entries[0];
- n = 0;
- while (entry->stream_nr != stream_nr && n < avi->index_size - 1) {
- n++;
- entry = &avi->index_entries[n];
- }
- } else if (entry->stream_nr != stream_nr) {
- while (entry->stream_nr != stream_nr && n > 0) {
- n--;
- entry = &avi->index_entries[n];
- }
- }
-
- GST_LOG_OBJECT (avi,
- "best at entry %u / ts:%" GST_TIME_FORMAT " / dur:%" GST_TIME_FORMAT
- " flags:%02x", n, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur),
- entry->flags);
-
- return entry;
-}
-
-/* GstElement methods */
-
-#if 0
-static const GstFormat *
-gst_avi_demux_get_src_formats (GstPad * pad)
-{
- avi_stream_context *stream = gst_pad_get_element_private (pad);
-
- static const GstFormat src_a_formats[] = {
- GST_FORMAT_TIME,
- GST_FORMAT_BYTES,
- GST_FORMAT_DEFAULT,
- 0
- };
- static const GstFormat src_v_formats[] = {
- GST_FORMAT_TIME,
- GST_FORMAT_DEFAULT,
- 0
- };
-
- return (stream->strh->type == GST_RIFF_FCC_auds ?
- src_a_formats : src_v_formats);
-}
-#endif
-
-/* assumes stream->strf.auds->av_bps != 0 */
-static inline GstClockTime
-avi_stream_convert_bytes_to_time_unchecked (avi_stream_context * stream,
- guint64 bytes)
-{
- return gst_util_uint64_scale (bytes, GST_SECOND, stream->strf.auds->av_bps);
-}
-
-/* assumes stream->strh->rate != 0 */
-static inline GstClockTime
-avi_stream_convert_frames_to_time_unchecked (avi_stream_context * stream,
- guint64 frames)
-{
- return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
- stream->strh->rate);
-}
-
-static gboolean
-gst_avi_demux_src_convert (GstPad * pad,
- GstFormat src_format,
- gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
-{
- avi_stream_context *stream = gst_pad_get_element_private (pad);
- gboolean res = TRUE;
-
- GST_LOG_OBJECT (pad,
- "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
- ", dest_format:%s", gst_format_get_name (src_format), src_value,
- gst_format_get_name (*dest_format));
-
- if (G_UNLIKELY (src_format == *dest_format)) {
- *dest_value = src_value;
- goto done;
- }
- if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
- res = FALSE;
- goto done;
- }
- if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
- (src_format == GST_FORMAT_BYTES
- || *dest_format == GST_FORMAT_BYTES))) {
- res = FALSE;
- goto done;
- }
-
- switch (src_format) {
- case GST_FORMAT_TIME:
- switch (*dest_format) {
- case GST_FORMAT_BYTES:
- *dest_value = gst_util_uint64_scale (src_value,
- (guint64) stream->strf.auds->av_bps, GST_SECOND);
- break;
- case GST_FORMAT_DEFAULT:
- {
- gdouble error;
-
- *dest_value = gst_util_uint64_scale (src_value, stream->strh->rate,
- stream->strh->scale * GST_SECOND);
-
- /* Attempt to round to nearest integer: if the difference is more
- * than 0.5 (less than -0.5), it means that gst_util_uint64_scale()
- * just truncated an integer, while it had to be rounded
- */
- error = *dest_value * GST_SECOND -
- src_value * stream->strh->rate / stream->strh->scale;
- if (error <= -0.5)
- *dest_value += 1;
- break;
- }
- default:
- res = FALSE;
- break;
- }
- break;
- case GST_FORMAT_BYTES:
- switch (*dest_format) {
- case GST_FORMAT_TIME:
- if (stream->strf.auds->av_bps != 0) {
- *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
- src_value);
- } else
- res = FALSE;
- break;
- default:
- res = FALSE;
- break;
- }
- break;
- case GST_FORMAT_DEFAULT:
- switch (*dest_format) {
- case GST_FORMAT_TIME:
- *dest_value =
- avi_stream_convert_frames_to_time_unchecked (stream, src_value);
- break;
- default:
- res = FALSE;
- break;
- }
- break;
- default:
- res = FALSE;
- }
-
-done:
- GST_LOG_OBJECT (pad,
- "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
- gst_format_get_name (*dest_format), *dest_value);
- return res;
-}
-
-static const GstQueryType *
-gst_avi_demux_get_src_query_types (GstPad * pad)
-{
- static const GstQueryType src_types[] = {
- GST_QUERY_POSITION,
- GST_QUERY_DURATION,
- GST_QUERY_SEEKING,
- GST_QUERY_CONVERT,
- 0
- };
-
- return src_types;
-}
-
-static gboolean
-gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
-{
- gboolean res = TRUE;
- GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
-
- avi_stream_context *stream = gst_pad_get_element_private (pad);
-
- if (!stream->strh || !stream->strf.data)
- return gst_pad_query_default (pad, query);
-
- switch (GST_QUERY_TYPE (query)) {
- case GST_QUERY_POSITION:{
- gint64 pos = 0;
-
- GST_DEBUG ("pos query for stream %d: frames %d, bytes %" G_GUINT64_FORMAT,
- stream->num, stream->current_frame, stream->current_byte);
-
- if (stream->strh->type == GST_RIFF_FCC_auds) {
- if (stream->is_vbr) {
- /* VBR */
- pos = gst_util_uint64_scale ((gint64) stream->current_frame *
- stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
- GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
- GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
- } else if (stream->strf.auds->av_bps != 0) {
- /* CBR */
- pos = gst_util_uint64_scale (stream->current_byte, GST_SECOND,
- (guint64) stream->strf.auds->av_bps);
- GST_DEBUG_OBJECT (avi,
- "CBR convert bytes %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT,
- stream->current_byte, GST_TIME_ARGS (pos));
- } else if (stream->total_frames != 0 && stream->total_bytes != 0) {
- /* calculate timestamps based on percentage of length */
- guint64 xlen = avi->avih->us_frame *
- avi->avih->tot_frames * GST_USECOND;
-
- if (stream->is_vbr) {
- pos = gst_util_uint64_scale (xlen, stream->current_frame,
- stream->total_frames);
- GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
- GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
- } else {
- pos = gst_util_uint64_scale (xlen, stream->current_byte,
- stream->total_bytes);
- GST_DEBUG_OBJECT (avi, "CBR perc convert bytes %" G_GUINT64_FORMAT
- ", time %" GST_TIME_FORMAT, stream->current_byte,
- GST_TIME_ARGS (pos));
- }
- } else {
- /* we don't know */
- res = FALSE;
- }
- } else {
- if (stream->strh->rate != 0) {
- pos = gst_util_uint64_scale ((guint64) stream->current_frame *
- stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
- } else {
- pos = stream->current_frame * avi->avih->us_frame * GST_USECOND;
- }
- }
- if (res) {
- GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
- gst_query_set_position (query, GST_FORMAT_TIME, pos);
- } else
- GST_WARNING ("pos query failed");
- break;
- }
- case GST_QUERY_DURATION:
- {
- GstFormat fmt;
-
- if (stream->strh->type != GST_RIFF_FCC_auds &&
- stream->strh->type != GST_RIFF_FCC_vids) {
- res = FALSE;
- break;
- }
-
- gst_query_parse_duration (query, &fmt, NULL);
-
- switch (fmt) {
- case GST_FORMAT_TIME:
- gst_query_set_duration (query, fmt, stream->duration);
- break;
- case GST_FORMAT_DEFAULT:
- {
- gint64 dur;
- GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
- stream->total_frames);
-
- if (stream->total_frames >= 0)
- gst_query_set_duration (query, fmt, stream->total_frames);
- else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
- stream->duration, &fmt, &dur))
- gst_query_set_duration (query, fmt, dur);
- break;
- }
- default:
- res = FALSE;
- break;
- }
- break;
- }
- case GST_QUERY_SEEKING:{
- GstFormat fmt;
-
- gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
- if (fmt == GST_FORMAT_TIME) {
- gboolean seekable = TRUE;
-
- if (avi->streaming) {
- seekable = FALSE;
- } else {
- if (avi->index_entries == NULL) {
- seekable = FALSE;
- /* FIXME: when building index_entried, count keyframes
- if (!(avi->key_frame_ct > 1))
- seekable = FALSE;
- */
- }
- }
-
- gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
- 0, stream->duration);
- res = TRUE;
- }
- break;
- }
- case GST_QUERY_CONVERT:{
- GstFormat src_fmt, dest_fmt;
- gint64 src_val, dest_val;
-
- gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
- if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
- &dest_val)))
- gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
- else
- res = gst_pad_query_default (pad, query);
- break;
- }
- default:
- res = gst_pad_query_default (pad, query);
- break;
- }
-
- gst_object_unref (avi);
- return res;
-}
-
-#if 0
-static const GstEventMask *
-gst_avi_demux_get_event_mask (GstPad * pad)
-{
- static const GstEventMask masks[] = {
- {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
- {0,}
- };
-
- return masks;
-}
-#endif
-
-static gboolean
-gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
-{
- gboolean res = TRUE;
- GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
-
- GST_DEBUG_OBJECT (avi,
- "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_NEWSEGMENT:
- /* Drop NEWSEGMENT events, new ones are generated later */
- gst_event_unref (event);
- break;
- case GST_EVENT_EOS:
- {
- if (avi->state != GST_AVI_DEMUX_MOVI) {
- gst_event_unref (event);
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
- (NULL), ("got eos and didn't receive a complete header object"));
- } else if (!gst_avi_demux_push_event (avi, event)) {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
- (NULL), ("got eos but no streams (yet)"));
- }
- break;
- }
- default:
- res = gst_pad_event_default (pad, event);
- break;
- }
-
- gst_object_unref (avi);
-
- return res;
-}
-
-static gboolean
-gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
-{
- gboolean res = TRUE;
- GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
-
- GST_DEBUG_OBJECT (avi,
- "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_SEEK:
- /* handle seeking only in pull mode */
- if (!avi->streaming) {
- res = gst_avi_demux_handle_seek (avi, pad, event);
- gst_event_unref (event);
- } else {
- res = gst_pad_event_default (pad, event);
- }
- break;
- case GST_EVENT_QOS:
- case GST_EVENT_NAVIGATION:
- res = FALSE;
- gst_event_unref (event);
- break;
- default:
- res = gst_pad_event_default (pad, event);
- break;
- }
-
- gst_object_unref (avi);
-
- return res;
-}
-
-/* streaming helper (push) */
-
-/*
- * gst_avi_demux_peek_chunk_info:
- * @avi: Avi object
- * @tag: holder for tag
- * @size: holder for tag size
- *
- * Peek next chunk info (tag and size)
- *
- * Returns: TRUE when one chunk info has been got
- */
-static gboolean
-gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
-{
- const guint8 *data = NULL;
-
- if (gst_adapter_available (avi->adapter) < 8) {
- return FALSE;
- }
-
- data = gst_adapter_peek (avi->adapter, 8);
- *tag = GST_READ_UINT32_LE (data);
- *size = GST_READ_UINT32_LE (data + 4);
-
- return TRUE;
-}
-
-/*
- * gst_avi_demux_peek_chunk:
- * @avi: Avi object
- * @tag: holder for tag
- * @size: holder for tag size
- *
- * Peek enough data for one full chunk
- *
- * Returns: %TRUE when one chunk has been got
- */
-static gboolean
-gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
-{
- guint32 peek_size = 0;
- gint available;
-
- if (!gst_avi_demux_peek_chunk_info (avi, tag, size)) {
- return FALSE;
- }
- /* FIXME: shouldn't this check go to gst_avi_demux_peek_chunk_info() already */
- if (!(*size) || (*size) == -1) {
- GST_INFO ("Invalid chunk size %d for tag %" GST_FOURCC_FORMAT,
- *size, GST_FOURCC_ARGS (*tag));
- return FALSE;
- }
- peek_size = (*size + 1) & ~1;
- available = gst_adapter_available (avi->adapter);
-
- GST_DEBUG ("Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
- ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
-
- if (available >= (8 + peek_size)) {
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-/* AVI init */
-
-/*
- * gst_avi_demux_parse_file_header:
- * @element: caller element (used for errors/debug).
- * @buf: input data to be used for parsing.
- *
- * "Open" a RIFF/AVI file. The buffer should be at least 12
- * bytes long. Takes ownership of @buf.
- *
- * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
- * Throws an error, caller should error out (fatal).
- */
-static gboolean
-gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
-{
- guint32 doctype;
-
- /* riff_parse posts an error */
- if (!gst_riff_parse_file_header (element, buf, &doctype))
- return FALSE;
-
- if (doctype != GST_RIFF_RIFF_AVI)
- goto not_avi;
-
- return TRUE;
-
- /* ERRORS */
-not_avi:
- {
- GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
- ("File is not an AVI file: %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (doctype)));
- return FALSE;
- }
-}
-
-/*
- * Read AVI file tag when streaming
- */
-static GstFlowReturn
-gst_avi_demux_stream_init_push (GstAviDemux * avi)
-{
- if (gst_adapter_available (avi->adapter) >= 12) {
- GstBuffer *tmp;
-
- tmp = gst_adapter_take_buffer (avi->adapter, 12);
-
- GST_DEBUG ("Parsing avi header");
- if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
- return GST_FLOW_ERROR;
- }
- GST_DEBUG ("header ok");
- avi->offset += 12;
-
- avi->state = GST_AVI_DEMUX_HEADER;
- }
- return GST_FLOW_OK;
-}
-
-/*
- * Read AVI file tag
- */
-static GstFlowReturn
-gst_avi_demux_stream_init_pull (GstAviDemux * avi)
-{
- GstFlowReturn res;
- GstBuffer *buf = NULL;
-
- res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
- if (res != GST_FLOW_OK)
- return res;
- else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
- goto wrong_header;
-
- avi->offset += 12;
-
- return GST_FLOW_OK;
-
- /* ERRORS */
-wrong_header:
- {
- GST_DEBUG_OBJECT (avi, "error parsing file header");
- return GST_FLOW_ERROR;
- }
-}
-
-/* AVI header handling */
-
-/*
- * gst_avi_demux_parse_avih:
- * @element: caller element (used for errors/debug).
- * @buf: input data to be used for parsing.
- * @avih: pointer to structure (filled in by function) containing
- * stream information (such as flags, number of streams, etc.).
- *
- * Read 'avih' header. Discards buffer after use.
- *
- * Returns: TRUE on success, FALSE otherwise. Throws an error if
- * the header is invalid. The caller should error out
- * (fatal).
- */
-static gboolean
-gst_avi_demux_parse_avih (GstElement * element,
- GstBuffer * buf, gst_riff_avih ** _avih)
-{
- gst_riff_avih *avih;
-
- if (buf == NULL)
- goto no_buffer;
-
- if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
- goto avih_too_small;
-
- avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
-
-#if (G_BYTE_ORDER == G_BIG_ENDIAN)
- avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
- avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
- avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
- avih->flags = GUINT32_FROM_LE (avih->flags);
- avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
- avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
- avih->streams = GUINT32_FROM_LE (avih->streams);
- avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
- avih->width = GUINT32_FROM_LE (avih->width);
- avih->height = GUINT32_FROM_LE (avih->height);
- avih->scale = GUINT32_FROM_LE (avih->scale);
- avih->rate = GUINT32_FROM_LE (avih->rate);
- avih->start = GUINT32_FROM_LE (avih->start);
- avih->length = GUINT32_FROM_LE (avih->length);
-#endif
-
- /* debug stuff */
- GST_INFO_OBJECT (element, "avih tag found:");
- GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
- GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
- GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
- GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
- GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
- GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
- GST_INFO_OBJECT (element, " streams %u", avih->streams);
- GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
- GST_INFO_OBJECT (element, " width %u", avih->width);
- GST_INFO_OBJECT (element, " height %u", avih->height);
- GST_INFO_OBJECT (element, " scale %u", avih->scale);
- GST_INFO_OBJECT (element, " rate %u", avih->rate);
- GST_INFO_OBJECT (element, " start %u", avih->start);
- GST_INFO_OBJECT (element, " length %u", avih->length);
-
- *_avih = avih;
- gst_buffer_unref (buf);
-
- return TRUE;
-
- /* ERRORS */
-no_buffer:
- {
- GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
- return FALSE;
- }
-avih_too_small:
- {
- GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
- ("Too small avih (%d available, %d needed)",
- GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
- gst_buffer_unref (buf);
- return FALSE;
- }
-}
-
-/*
- * gst_avi_demux_parse_superindex:
- * @avi: caller element (used for debugging/errors).
- * @buf: input data to use for parsing.
- * @locations: locations in the file (byte-offsets) that contain
- * the actual indexes (see get_avi_demux_parse_subindex()).
- * The array ends with GST_BUFFER_OFFSET_NONE.
- *
- * Reads superindex (openDML-2 spec stuff) from the provided data.
- *
- * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
- * on error, but they are not fatal.
- */
-static gboolean
-gst_avi_demux_parse_superindex (GstAviDemux * avi,
- GstBuffer * buf, guint64 ** _indexes)
-{
- guint8 *data;
- guint16 bpe = 16;
- guint32 num, i;
- guint64 *indexes;
- guint size;
-
- *_indexes = NULL;
-
- size = buf ? GST_BUFFER_SIZE (buf) : 0;
- if (size < 24)
- goto too_small;
-
- data = GST_BUFFER_DATA (buf);
-
- /* check type of index. The opendml2 specs state that
- * there should be 4 dwords per array entry. Type can be
- * either frame or field (and we don't care). */
- if (GST_READ_UINT16_LE (data) != 4 ||
- (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
- GST_WARNING_OBJECT (avi,
- "Superindex for stream has unexpected "
- "size_entry %d (bytes) or flags 0x%02x/0x%02x",
- GST_READ_UINT16_LE (data), data[2], data[3]);
- bpe = GST_READ_UINT16_LE (data) * 4;
- }
- num = GST_READ_UINT32_LE (&data[4]);
-
- indexes = g_new (guint64, num + 1);
- for (i = 0; i < num; i++) {
- if (size < 24 + bpe * (i + 1))
- break;
- indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
- }
- indexes[i] = GST_BUFFER_OFFSET_NONE;
- *_indexes = indexes;
-
- gst_buffer_unref (buf);
-
- return TRUE;
-
- /* ERRORS */
-too_small:
- {
- GST_ERROR_OBJECT (avi,
- "Not enough data to parse superindex (%d available, 24 needed)", size);
- if (buf)
- gst_buffer_unref (buf);
- return FALSE;
- }
-}
-
-/*
- * gst_avi_demux_parse_subindex:
- * @avi: Avi object
- * @buf: input data to use for parsing.
- * @stream: stream context.
- * @entries_list: a list (returned by the function) containing all the
- * indexes parsed in this specific subindex. The first
- * entry is also a pointer to allocated memory that needs
- * to be free´ed. May be NULL if no supported indexes were
- * found.
- *
- * Reads superindex (openDML-2 spec stuff) from the provided data.
- * The buffer will be discarded after use.
- *
- * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
- * throw an error, caller should bail out asap.
- */
-static gboolean
-gst_avi_demux_parse_subindex (GstAviDemux * avi,
- GstBuffer * buf, avi_stream_context * stream, GList ** _entries_list)
-{
- guint8 *data = GST_BUFFER_DATA (buf);
- guint16 bpe;
- guint32 num, i;
- guint64 baseoff;
- gst_avi_index_entry *entries, *entry;
- GList *entries_list = NULL;
- guint size;
-
- *_entries_list = NULL;
-
- size = buf ? GST_BUFFER_SIZE (buf) : 0;
-
- /* check size */
- if (size < 24)
- goto too_small;
-
- /* We don't support index-data yet */
- if (data[3] & 0x80)
- goto not_implemented;
-
- /* check type of index. The opendml2 specs state that
- * there should be 4 dwords per array entry. Type can be
- * either frame or field (and we don't care). */
- bpe = (data[2] & 0x01) ? 12 : 8;
- if (GST_READ_UINT16_LE (data) != bpe / 4 ||
- (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
- GST_WARNING_OBJECT (avi,
- "Superindex for stream %d has unexpected "
- "size_entry %d (bytes) or flags 0x%02x/0x%02x",
- stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
- bpe = GST_READ_UINT16_LE (data) * 4;
- }
- num = GST_READ_UINT32_LE (&data[4]);
- baseoff = GST_READ_UINT64_LE (&data[12]);
-
- /* If there's nothing, just return ! */
- if (num == 0)
- return TRUE;
-
- if (!(entries = g_try_new (gst_avi_index_entry, num)))
- goto out_of_mem;
-
- for (i = 0; i < num; i++) {
- gint64 next_ts;
-
- entry = &entries[i];
-
- if (size < 24 + bpe * (i + 1))
- break;
-
- /* fill in */
- entry->offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
- entry->size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
- entry->flags =
- (entry->size & 0x80000000) ? 0 : GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
- entry->size &= ~0x80000000;
- entry->index_nr = i;
- entry->stream_nr = stream->num;
-
- /* stream duration unknown, now we can calculate it */
- if (stream->idx_duration == -1)
- stream->idx_duration = 0;
-
- /* timestamps */
- entry->ts = stream->idx_duration;
- if (stream->is_vbr) {
- /* VBR stream next timestamp */
- if (stream->strh->type == GST_RIFF_FCC_auds) {
- next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_blocks + 1);
- } else {
- next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_frames + 1);
- }
- } else {
- /* CBR get next timestamp */
- next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
- stream->total_bytes + entry->size);
- }
- /* duration is next - current */
- entry->dur = next_ts - entry->ts;
-
- /* stream position */
- entry->bytes_before = stream->total_bytes;
- entry->frames_before = stream->total_frames;
-
- stream->total_bytes += entry->size;
- stream->total_frames++;
- if (stream->strh->type == GST_RIFF_FCC_auds) {
- if (stream->strf.auds->blockalign > 0)
- stream->total_blocks +=
- (entry->size + stream->strf.auds->blockalign -
- 1) / stream->strf.auds->blockalign;
- else
- stream->total_blocks++;
- }
- stream->idx_duration = next_ts;
-
- entries_list = g_list_prepend (entries_list, entry);
- }
-
- GST_LOG_OBJECT (avi, "Read %d index entries", i);
-
- gst_buffer_unref (buf);
-
- if (i > 0) {
- *_entries_list = g_list_reverse (entries_list);
- } else {
- g_free (entries);
- }
-
- return TRUE;
-
- /* ERRORS */
-too_small:
- {
- GST_ERROR_OBJECT (avi,
- "Not enough data to parse subindex (%d available, 24 needed)", size);
- if (buf)
- gst_buffer_unref (buf);
- return TRUE; /* continue */
- }
-not_implemented:
- {
- GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
- ("Subindex-is-data is not implemented"));
- gst_buffer_unref (buf);
- return FALSE;
- }
-out_of_mem:
- {
- GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
- ("Cannot allocate memory for %u*%u=%u bytes",
- (guint) sizeof (gst_avi_index_entry), num,
- (guint) sizeof (gst_avi_index_entry) * num));
- gst_buffer_unref (buf);
- return FALSE;
- }
-}
-
-#if 0
-/*
- * Read AVI index when streaming
- */
-static void
-gst_avi_demux_read_subindexes_push (GstAviDemux * avi,
- GList ** index, GList ** alloc_list)
-{
- GList *list = NULL;
- guint32 tag = 0, size;
- GstBuffer *buf = NULL;
- gint i, n;
-
- GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_push for %d streams",
- avi->num_streams);
-
- for (n = 0; n < avi->num_streams; n++) {
- avi_stream_context *stream = &avi->stream[n];
-
- for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
- if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
- continue;
- else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
- '0' + stream->num % 10)) &&
- (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
- '0' + stream->num % 10, 'i', 'x'))) {
- GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
- GST_FOURCC_ARGS (tag));
- continue;
- }
-
- avi->offset += 8 + ((size + 1) & ~1);
-
- buf = gst_buffer_new ();
- GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
- GST_BUFFER_SIZE (buf) = size;
-
- if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
- continue;
- if (list) {
- GST_DEBUG_OBJECT (avi, " adding %d entries", g_list_length (list));
- *alloc_list = g_list_append (*alloc_list, list->data);
- *index = g_list_concat (*index, list);
- }
- }
-
- g_free (stream->indexes);
- stream->indexes = NULL;
- }
- GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
-}
-#endif
-
-/*
- * Read AVI index
- */
-static void
-gst_avi_demux_read_subindexes_pull (GstAviDemux * avi,
- GList ** index, GList ** alloc_list)
-{
- GList *list = NULL;
- guint32 tag;
- GstBuffer *buf;
- gint i, n;
-
- GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_pull for %d streams",
- avi->num_streams);
-
- for (n = 0; n < avi->num_streams; n++) {
- avi_stream_context *stream = &avi->stream[n];
-
- for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
- if (gst_riff_read_chunk (GST_ELEMENT (avi), avi->sinkpad,
- &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
- continue;
- else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
- '0' + stream->num % 10)) &&
- (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
- '0' + stream->num % 10, 'i', 'x'))) {
- /* Some ODML files (created by god knows what muxer) have a ##ix format
- * instead of the 'official' ix##. They are still valid though. */
- GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
- GST_FOURCC_ARGS (tag));
- gst_buffer_unref (buf);
- continue;
- }
-
- if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
- continue;
- if (list) {
- GST_DEBUG_OBJECT (avi, " adding %5d entries, total %2d %5d",
- g_list_length (list), g_list_length (*alloc_list),
- g_list_length (*index));
- *alloc_list = g_list_append (*alloc_list, list->data);
- *index = g_list_concat (*index, list);
- }
- }
-
- g_free (stream->indexes);
- stream->indexes = NULL;
- }
- GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
-}
-
-/*
- * gst_avi_demux_riff_parse_vprp:
- * @element: caller element (used for debugging/error).
- * @buf: input data to be used for parsing, stripped from header.
- * @vprp: a pointer (returned by this function) to a filled-in vprp
- * structure. Caller should free it.
- *
- * Parses a video stream´s vprp. This function takes ownership of @buf.
- *
- * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
- * should be skipped on error, but it is not fatal.
- */
-static gboolean
-gst_avi_demux_riff_parse_vprp (GstElement * element,
- GstBuffer * buf, gst_riff_vprp ** _vprp)
-{
- gst_riff_vprp *vprp;
- gint k;
-
- g_return_val_if_fail (buf != NULL, FALSE);
- g_return_val_if_fail (_vprp != NULL, FALSE);
-
- if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
- goto too_small;
-
- vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
-
-#if (G_BYTE_ORDER == G_BIG_ENDIAN)
- vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
- vprp->standard = GUINT32_FROM_LE (vprp->standard);
- vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
- vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
- vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
- vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
- vprp->width = GUINT32_FROM_LE (vprp->width);
- vprp->height = GUINT32_FROM_LE (vprp->height);
- vprp->fields = GUINT32_FROM_LE (vprp->fields);
-#endif
-
- /* size checking */
- /* calculate fields based on size */
- k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
- vprp->fields;
- if (vprp->fields > k) {
- GST_WARNING_OBJECT (element,
- "vprp header indicated %d fields, only %d available", vprp->fields, k);
- vprp->fields = k;
- }
- if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
- GST_WARNING_OBJECT (element,
- "vprp header indicated %d fields, at most %d supported", vprp->fields,
- GST_RIFF_VPRP_VIDEO_FIELDS);
- vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
- }
-#if (G_BYTE_ORDER == G_BIG_ENDIAN)
- for (k = 0; k < vprp->fields; k++) {
- gst_riff_vprp_video_field_desc *fd;
-
- fd = &vprp->field_info[k];
- fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
- fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
- fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
- fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
- fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
- fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
- fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
- fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
- }
-#endif
-
- /* debug */
- GST_INFO_OBJECT (element, "vprp tag found in context vids:");
- GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
- GST_INFO_OBJECT (element, " standard %d", vprp->standard);
- GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
- GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
- GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
- GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
- vprp->aspect & 0xffff);
- GST_INFO_OBJECT (element, " width %d", vprp->width);
- GST_INFO_OBJECT (element, " height %d", vprp->height);
- GST_INFO_OBJECT (element, " fields %d", vprp->fields);
- for (k = 0; k < vprp->fields; k++) {
- gst_riff_vprp_video_field_desc *fd;
-
- fd = &(vprp->field_info[k]);
- GST_INFO_OBJECT (element, " field %u description:", k);
- GST_INFO_OBJECT (element, " compressed_bm_height %d",
- fd->compressed_bm_height);
- GST_INFO_OBJECT (element, " compressed_bm_width %d",
- fd->compressed_bm_width);
- GST_INFO_OBJECT (element, " valid_bm_height %d",
- fd->valid_bm_height);
- GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
- GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
- fd->valid_bm_x_offset);
- GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
- fd->valid_bm_y_offset);
- GST_INFO_OBJECT (element, " video_x_t_offset %d",
- fd->video_x_t_offset);
- GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
- }
-
- gst_buffer_unref (buf);
-
- *_vprp = vprp;
-
- return TRUE;
-
- /* ERRORS */
-too_small:
- {
- GST_ERROR_OBJECT (element,
- "Too small vprp (%d available, at least %d needed)",
- GST_BUFFER_SIZE (buf),
- (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
- gst_buffer_unref (buf);
- return FALSE;
- }
-}
-
-/*
- * gst_avi_demux_parse_stream:
- * @avi: calling element (used for debugging/errors).
- * @buf: input buffer used to parse the stream.
- *
- * Parses all subchunks in a strl chunk (which defines a single
- * stream). Discards the buffer after use. This function will
- * increment the stream counter internally.
- *
- * Returns: whether the stream was identified successfully.
- * Errors are not fatal. It does indicate the stream
- * was skipped.
- */
-static gboolean
-gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
-{
- avi_stream_context *stream;
- GstElementClass *klass;
- GstPadTemplate *templ;
- GstBuffer *sub = NULL;
- guint offset = 4;
- guint32 tag = 0;
- gchar *codec_name = NULL, *padname = NULL;
- const gchar *tag_name;
- GstCaps *caps = NULL;
- GstPad *pad;
- GstElement *element;
- gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
- gst_riff_vprp *vprp = NULL;
-
- element = GST_ELEMENT_CAST (avi);
-
- GST_DEBUG_OBJECT (avi, "Parsing stream");
-
- if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
- GST_WARNING_OBJECT (avi,
- "maximum no of streams (%d) exceeded, ignoring stream",
- GST_AVI_DEMUX_MAX_STREAMS);
- gst_buffer_unref (buf);
- /* not a fatal error, let's say */
- return TRUE;
- }
-
- stream = &avi->stream[avi->num_streams];
-
- /* initial settings */
- stream->idx_duration = GST_CLOCK_TIME_NONE;
- stream->hdr_duration = GST_CLOCK_TIME_NONE;
- stream->duration = GST_CLOCK_TIME_NONE;
-
- while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
- /* sub can be NULL if the chunk is empty */
- if (sub == NULL) {
- GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (tag));
- continue;
- }
- switch (tag) {
- case GST_RIFF_TAG_strh:
- {
- gst_riff_strh *strh;
-
- if (got_strh) {
- GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
- break;
- }
- if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
- /* ownership given away */
- sub = NULL;
- GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
- goto fail;
- }
- sub = NULL;
- strh = stream->strh;
- /* sanity check; stream header frame rate matches global header
- * frame duration */
- if (stream->strh->type == GST_RIFF_FCC_vids) {
- GstClockTime s_dur;
- GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
-
- s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
- GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
- "frame duration = %d ms", strh->rate, strh->scale,
- s_dur / GST_MSECOND);
- if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
- strh->rate = GST_SECOND / GST_USECOND;
- strh->scale = h_dur / GST_USECOND;
- GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
- strh->rate, strh->scale);
- }
- }
- /* determine duration as indicated by header */
- stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
- strh->scale, GST_SECOND, (guint64) strh->rate);
- GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
- GST_TIME_ARGS (stream->hdr_duration));
- if (stream->hdr_duration == 0)
- stream->hdr_duration = GST_CLOCK_TIME_NONE;
-
- got_strh = TRUE;
- break;
- }
- case GST_RIFF_TAG_strf:
- {
- gboolean res = FALSE;
-
- if (got_strf) {
- GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
- break;
- }
- if (!got_strh) {
- GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
- goto fail;
- }
- switch (stream->strh->type) {
- case GST_RIFF_FCC_vids:
- stream->is_vbr = TRUE;
- res = gst_riff_parse_strf_vids (element, sub,
- &stream->strf.vids, &stream->extradata);
- sub = NULL;
- GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
- break;
- case GST_RIFF_FCC_auds:
- stream->is_vbr = (stream->strh->samplesize == 0)
- && stream->strh->scale > 1;
- res =
- gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
- &stream->extradata);
- sub = NULL;
- GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
- stream->is_vbr, res);
- break;
- case GST_RIFF_FCC_iavs:
- stream->is_vbr = TRUE;
- res = gst_riff_parse_strf_iavs (element, sub,
- &stream->strf.iavs, &stream->extradata);
- sub = NULL;
- GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
- break;
- case GST_RIFF_FCC_txts:
- /* nothing to parse here */
- stream->is_vbr = (stream->strh->samplesize == 0)
- && (stream->strh->scale > 1);
- res = TRUE;
- break;
- default:
- GST_ERROR_OBJECT (avi,
- "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (stream->strh->type));
- break;
- }
- if (sub) {
- gst_buffer_unref (sub);
- sub = NULL;
- }
- if (!res)
- goto fail;
- got_strf = TRUE;
- break;
- }
- case GST_RIFF_TAG_vprp:
- {
- if (got_vprp) {
- GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
- break;
- }
- if (!got_strh) {
- GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
- goto fail;
- }
- if (!got_strf) {
- GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
- goto fail;
- }
-
- if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
- GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
- /* not considered fatal */
- g_free (vprp);
- vprp = NULL;
- } else
- got_vprp = TRUE;
- sub = NULL;
- break;
- }
- case GST_RIFF_TAG_strd:
- if (stream->initdata)
- gst_buffer_unref (stream->initdata);
- stream->initdata = sub;
- sub = NULL;
- break;
- case GST_RIFF_TAG_strn:
- g_free (stream->name);
- if (sub != NULL) {
- stream->name =
- g_strndup ((gchar *) GST_BUFFER_DATA (sub),
- (gsize) GST_BUFFER_SIZE (sub));
- gst_buffer_unref (sub);
- sub = NULL;
- } else {
- stream->name = g_strdup ("");
- }
- GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
- break;
- default:
- if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
- tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
- '0' + avi->num_streams % 10)) {
- g_free (stream->indexes);
- gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
- stream->superindex = TRUE;
- sub = NULL;
- break;
- }
- GST_WARNING_OBJECT (avi,
- "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
- GST_FOURCC_ARGS (tag));
- /* fall-through */
- case GST_RIFF_TAG_JUNK:
- break;
- }
- if (sub != NULL) {
- gst_buffer_unref (sub);
- sub = NULL;
- }
- }
-
- if (!got_strh) {
- GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
- goto fail;
- }
-
- if (!got_strf) {
- GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
- goto fail;
- }
-
- /* get class to figure out the template */
- klass = GST_ELEMENT_GET_CLASS (avi);
-
- /* we now have all info, let´s set up a pad and a caps and be done */
- /* create stream name + pad */
- switch (stream->strh->type) {
- case GST_RIFF_FCC_vids:{
- guint32 fourcc;
-
- fourcc = (stream->strf.vids->compression) ?
- stream->strf.vids->compression : stream->strh->fcc_handler;
- padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
- templ = gst_element_class_get_pad_template (klass, "video_%02d");
- caps = gst_riff_create_video_caps (fourcc, stream->strh,
- stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
- if (!caps) {
- caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
- GST_TYPE_FOURCC, fourcc, NULL);
- } else if (got_vprp && vprp) {
- guint32 aspect_n, aspect_d;
- gint n, d;
-
- aspect_n = vprp->aspect >> 16;
- aspect_d = vprp->aspect & 0xffff;
- /* calculate the pixel aspect ratio using w/h and aspect ratio */
- n = aspect_n * stream->strf.vids->height;
- d = aspect_d * stream->strf.vids->width;
- if (n && d)
- gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
- n, d, NULL);
- /* very local, not needed elsewhere */
- g_free (vprp);
- vprp = NULL;
- }
- tag_name = GST_TAG_VIDEO_CODEC;
- avi->num_v_streams++;
- break;
- }
- case GST_RIFF_FCC_auds:{
- padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
- templ = gst_element_class_get_pad_template (klass, "audio_%02d");
- caps = gst_riff_create_audio_caps (stream->strf.auds->format,
- stream->strh, stream->strf.auds, stream->extradata,
- stream->initdata, &codec_name);
- if (!caps) {
- caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
- G_TYPE_INT, stream->strf.auds->format, NULL);
- }
- tag_name = GST_TAG_AUDIO_CODEC;
- avi->num_a_streams++;
- break;
- }
- case GST_RIFF_FCC_iavs:{
- guint32 fourcc = stream->strh->fcc_handler;
-
- padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
- templ = gst_element_class_get_pad_template (klass, "video_%02d");
- caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
- stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
- if (!caps) {
- caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
- GST_TYPE_FOURCC, fourcc, NULL);
- }
- tag_name = GST_TAG_VIDEO_CODEC;
- avi->num_v_streams++;
- break;
- }
- case GST_RIFF_FCC_txts:{
- padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
- templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
- caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
- tag_name = NULL;
- avi->num_t_streams++;
- break;
- }
- default:
- g_assert_not_reached ();
- }
-
- /* no caps means no stream */
- if (!caps) {
- GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
- goto fail;
- }
-
- GST_DEBUG_OBJECT (element, "codec-name=%s",
- (codec_name ? codec_name : "NULL"));
- GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
-
- /* set proper settings and add it */
- if (stream->pad)
- gst_object_unref (stream->pad);
- pad = stream->pad = gst_pad_new_from_template (templ, padname);
- stream->last_flow = GST_FLOW_OK;
- stream->discont = TRUE;
- g_free (padname);
-
- gst_pad_use_fixed_caps (pad);
-#if 0
- gst_pad_set_formats_function (pad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
- gst_pad_set_event_mask_function (pad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
-#endif
- gst_pad_set_event_function (pad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
- gst_pad_set_query_type_function (pad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
- gst_pad_set_query_function (pad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
-#if 0
- gst_pad_set_convert_function (pad,
- GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
-#endif
-
- stream->num = avi->num_streams;
- stream->total_bytes = 0;
- stream->total_frames = 0;
- stream->total_blocks = 0;
- stream->current_frame = 0;
- stream->current_byte = 0;
- gst_pad_set_element_private (pad, stream);
- avi->num_streams++;
- gst_pad_set_caps (pad, caps);
- gst_pad_set_active (pad, TRUE);
- gst_element_add_pad (GST_ELEMENT (avi), pad);
- GST_LOG_OBJECT (element, "Added pad %s with caps %" GST_PTR_FORMAT,
- GST_PAD_NAME (pad), caps);
- gst_caps_unref (caps);
-
- /* make tags */
- if (codec_name) {
- if (!stream->taglist)
- stream->taglist = gst_tag_list_new ();
-
- avi->got_tags = TRUE;
-
- gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
- codec_name, NULL);
- g_free (codec_name);
- }
-
- gst_buffer_unref (buf);
-
- return TRUE;
-
- /* ERRORS */
-fail:
- {
- /* unref any mem that may be in use */
- if (buf)
- gst_buffer_unref (buf);
- if (sub)
- gst_buffer_unref (sub);
- g_free (vprp);
- g_free (codec_name);
- g_free (stream->strh);
- g_free (stream->strf.data);
- g_free (stream->name);
- g_free (stream->indexes);
- if (stream->initdata)
- gst_buffer_unref (stream->initdata);
- if (stream->extradata)
- gst_buffer_unref (stream->extradata);
- memset (stream, 0, sizeof (avi_stream_context));
- avi->num_streams++;
- return FALSE;
- }
-}
-
-/*
- * gst_avi_demux_parse_odml:
- * @avi: calling element (used for debug/error).
- * @buf: input buffer to be used for parsing.
- *
- * Read an openDML-2.0 extension header. Fills in the frame number
- * in the avi demuxer object when reading succeeds.
- */
-static void
-gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
-{
- guint32 tag = 0;
- guint offset = 4;
- GstBuffer *sub = NULL;
-
- while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
- &sub)) {
- switch (tag) {
- case GST_RIFF_TAG_dmlh:{
- gst_riff_dmlh dmlh, *_dmlh;
- guint size;
-
- /* sub == NULL is possible and means an empty buffer */
- size = sub ? GST_BUFFER_SIZE (sub) : 0;
-
- /* check size */
- if (size < sizeof (gst_riff_dmlh)) {
- GST_ERROR_OBJECT (avi,
- "DMLH entry is too small (%d bytes, %d needed)",
- size, (int) sizeof (gst_riff_dmlh));
- goto next;
- }
- _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
- dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
-
- GST_INFO_OBJECT (avi, "dmlh tag found:");
- GST_INFO_OBJECT (avi, " totalframes: %u", dmlh.totalframes);
-
- avi->avih->tot_frames = dmlh.totalframes;
- goto next;
- }
-
- default:
- GST_WARNING_OBJECT (avi,
- "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
- GST_FOURCC_ARGS (tag));
- /* fall-through */
- case GST_RIFF_TAG_JUNK:
- next:
- /* skip and move to next chunk */
- if (sub) {
- gst_buffer_unref (sub);
- sub = NULL;
- }
- break;
- }
- }
- if (buf)
- gst_buffer_unref (buf);
-}
-
-/*
- * Sort helper for index entries that sorts by index time.
- * If times are equal we sort by stream number.
- */
-static gint
-sort (gst_avi_index_entry * a, gst_avi_index_entry * b)
-{
- if (a->ts > b->ts)
- return 1;
- else if (a->ts < b->ts)
- return -1;
- else
- return a->stream_nr - b->stream_nr;
-}
-
-/*
- * gst_avi_demux_parse_index:
- * @avi: calling element (used for debugging/errors).
- * @buf: buffer containing the full index.
- * @entries_list: list (returned by this function) containing the index
- * entries parsed from the buffer. The first in the list
- * is also a pointer to the allocated data and should be
- * free'ed at some point.
- *
- * Read index entries from the provided buffer. Takes ownership of @buf.
- */
-static void
-gst_avi_demux_parse_index (GstAviDemux * avi,
- GstBuffer * buf, GList ** _entries_list)
-{
- guint64 pos_before = avi->offset;
- gst_avi_index_entry *entries = NULL;
- guint8 *data;
- GList *entries_list = NULL;
- guint i, num, n;
-
-#ifndef GST_DISABLE_GST_DEBUG
- gulong _nr_keyframes = 0;
-#endif
-
- if (!buf || !GST_BUFFER_SIZE (buf)) {
- *_entries_list = NULL;
- GST_DEBUG ("empty index");
- if (buf)
- gst_buffer_unref (buf);
- return;
- }
-
- data = GST_BUFFER_DATA (buf);
- num = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
- if (!(entries = g_try_new (gst_avi_index_entry, num)))
- goto out_of_mem;
-
- GST_INFO ("Parsing index, nr_entries = %6d", num);
-
- for (i = 0, n = 0; i < num; i++) {
- gint64 next_ts;
- gst_riff_index_entry entry, *_entry;
- avi_stream_context *stream;
- guint stream_nr;
- gst_avi_index_entry *target;
-
- _entry = &((gst_riff_index_entry *) data)[i];
- entry.id = GST_READ_UINT32_LE (&_entry->id);
- entry.offset = GST_READ_UINT32_LE (&_entry->offset);
- entry.flags = GST_READ_UINT32_LE (&_entry->flags);
- entry.size = GST_READ_UINT32_LE (&_entry->size);
- target = &entries[n];
-
- if (entry.id == GST_RIFF_rec || entry.id == 0 ||
- (entry.offset == 0 && n > 0))
- continue;
-
- stream_nr = CHUNKID_TO_STREAMNR (entry.id);
- if (stream_nr >= avi->num_streams) {
- GST_WARNING_OBJECT (avi,
- "Index entry %d has invalid stream nr %d", i, stream_nr);
- continue;
- }
- target->stream_nr = stream_nr;
- stream = &avi->stream[stream_nr];
-
- if (!stream->strh) {
- GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
- continue;
- }
-
- target->index_nr = i;
- target->flags =
- (entry.flags & GST_RIFF_IF_KEYFRAME) ? GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME
- : 0;
- target->size = entry.size;
- target->offset = entry.offset + 8;
-
- /* figure out if the index is 0 based or relative to the MOVI start */
- if (n == 0) {
- if (target->offset < pos_before)
- avi->index_offset = pos_before + 8;
- else
- avi->index_offset = 0;
- GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
- }
-
- if (stream->strh->type == GST_RIFF_FCC_auds) {
- /* all audio frames are keyframes */
- target->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
- }
-#ifndef GST_DISABLE_GST_DEBUG
- if (target->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
- _nr_keyframes++;
-#endif
-
- /* stream duration unknown, now we can calculate it */
- if (stream->idx_duration == -1)
- stream->idx_duration = 0;
-
- /* timestamps */
- target->ts = stream->idx_duration;
- if (stream->is_vbr) {
- /* VBR stream next timestamp */
- if (stream->strh->type == GST_RIFF_FCC_auds) {
- next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_blocks + 1);
- } else {
- next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_frames + 1);
- }
- } else {
- /* constant rate stream */
- next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
- stream->total_bytes + target->size);
- }
- /* duration is next - current */
- target->dur = next_ts - target->ts;
-
- /* stream position */
- target->bytes_before = stream->total_bytes;
- target->frames_before = stream->total_frames;
-
- stream->total_bytes += target->size;
- stream->total_frames++;
- if (stream->strh->type == GST_RIFF_FCC_auds) {
- if (stream->strf.auds->blockalign > 0)
- stream->total_blocks +=
- (target->size + stream->strf.auds->blockalign -
- 1) / stream->strf.auds->blockalign;
- else
- stream->total_blocks++;
- }
- stream->idx_duration = next_ts;
-
- GST_LOG_OBJECT (avi,
- "Adding index entry %d (%6u), flags %02x, stream %d, size %u "
- ", offset %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT ", dur %"
- GST_TIME_FORMAT,
- target->index_nr, stream->total_frames - 1, target->flags,
- target->stream_nr, target->size, target->offset,
- GST_TIME_ARGS (target->ts), GST_TIME_ARGS (target->dur));
- entries_list = g_list_prepend (entries_list, target);
-
- n++;
- }
-
- GST_INFO ("Parsed index, %6d entries, %5ld keyframes, entry size = %2d, "
- "total size = %10d", num, _nr_keyframes,
- (gint) sizeof (gst_avi_index_entry),
- (gint) (num * sizeof (gst_avi_index_entry)));
-
- gst_buffer_unref (buf);
-
- if (n > 0) {
- *_entries_list = g_list_reverse (entries_list);
- } else {
- g_free (entries);
- }
- return;
-
- /* ERRORS */
-out_of_mem:
- {
- GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
- ("Cannot allocate memory for %u*%u=%u bytes",
- (guint) sizeof (gst_avi_index_entry), num,
- (guint) sizeof (gst_avi_index_entry) * num));
- gst_buffer_unref (buf);
- }
-}
-
-/*
- * gst_avi_demux_stream_index:
- * @avi: avi demuxer object.
- * @index: list of index entries, returned by this function.
- * @alloc_list: list of allocated data, returned by this function.
- *
- * Seeks to index and reads it.
- */
-static void
-gst_avi_demux_stream_index (GstAviDemux * avi,
- GList ** index, GList ** alloc_list)
-{
- GstFlowReturn res;
- guint64 offset = avi->offset;
- GstBuffer *buf;
- guint32 tag;
- guint32 size;
- gint i;
-
- GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
-
- *alloc_list = NULL;
- *index = NULL;
-
- /* get chunk information */
- res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
- if (res != GST_FLOW_OK)
- goto pull_failed;
- else if (GST_BUFFER_SIZE (buf) < 8)
- goto too_small;
-
- /* check tag first before blindy trying to read 'size' bytes */
- tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
- size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
- if (tag == GST_RIFF_TAG_LIST) {
- /* this is the movi tag */
- GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
- (8 + ((size + 1) & ~1)));
- offset += 8 + ((size + 1) & ~1);
- gst_buffer_unref (buf);
- res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
- if (res != GST_FLOW_OK)
- goto pull_failed;
- else if (GST_BUFFER_SIZE (buf) < 8)
- goto too_small;
- tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
- size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
- }
-
- if (tag != GST_RIFF_TAG_idx1)
- goto no_index;
- if (!size)
- goto zero_index;
-
- gst_buffer_unref (buf);
-
- GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
-
- /* read chunk, advance offset */
- if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
- avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
- return;
-
- GST_INFO ("will parse index chunk size %u for tag %"
- GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
-
- gst_avi_demux_parse_index (avi, buf, index);
- if (*index)
- *alloc_list = g_list_append (*alloc_list, (*index)->data);
-
- /* debug our indexes */
- for (i = 0; i < avi->num_streams; i++) {
- avi_stream_context *stream;
-
- stream = &avi->stream[i];
- GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
- i, stream->total_frames, stream->total_bytes);
- }
- return;
-
- /* ERRORS */
-pull_failed:
- {
- GST_DEBUG_OBJECT (avi,
- "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
- return;
- }
-too_small:
- {
- GST_DEBUG_OBJECT (avi, "Buffer is too small");
- gst_buffer_unref (buf);
- return;
- }
-no_index:
- {
- GST_WARNING_OBJECT (avi,
- "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (tag));
- gst_buffer_unref (buf);
- return;
- }
-zero_index:
- {
- GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
- gst_buffer_unref (buf);
- return;
- }
-}
-
-#if 0
-/*
- * Sync to next data chunk.
- */
-static gboolean
-gst_avi_demux_skip (GstAviDemux * avi, gboolean prevent_eos)
-{
- GstRiffRead *riff = GST_RIFF_READ (avi);
-
- if (prevent_eos) {
- guint64 pos, length;
- guint size;
- guint8 *data;
-
- pos = gst_bytestream_tell (riff->bs);
- length = gst_bytestream_length (riff->bs);
-
- if (pos + 8 > length)
- return FALSE;
-
- if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
- return FALSE;
-
- size = GST_READ_UINT32_LE (&data[4]);
- if (size & 1)
- size++;
-
- /* Note, we're going to skip which might involve seeks. Therefore,
- * we need 1 byte more! */
- if (pos + 8 + size >= length)
- return FALSE;
- }
-
- return gst_riff_read_skip (riff);
-}
-
-static gboolean
-gst_avi_demux_sync (GstAviDemux * avi, guint32 * ret_tag, gboolean prevent_eos)
-{
- GstRiffRead *riff = GST_RIFF_READ (avi);
- guint32 tag;
- guint64 length = gst_bytestream_length (riff->bs);
-
- if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
- return FALSE;
-
- /* peek first (for the end of this 'list/movi' section) */
- if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
- return FALSE;
-
- /* if we're at top-level, we didn't read the 'movi'
- * list tag yet. This can also be 'AVIX' in case of
- * openDML-2.0 AVI files. Lastly, it might be idx1,
- * in which case we skip it so we come at EOS. */
- while (1) {
- if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
- return FALSE;
-
- if (!(tag = gst_riff_peek_tag (riff, NULL)))
- return FALSE;
-
- switch (tag) {
- case GST_RIFF_TAG_LIST:
- if (!(tag = gst_riff_peek_list (riff)))
- return FALSE;
-
- switch (tag) {
- case GST_RIFF_LIST_AVIX:
- if (!gst_riff_read_list (riff, &tag))
- return FALSE;
- break;
-
- case GST_RIFF_LIST_movi:
- if (!gst_riff_read_list (riff, &tag))
- return FALSE;
- /* fall-through */
-
- case GST_RIFF_rec:
- goto done;
-
- default:
- GST_WARNING ("Unknown list %" GST_FOURCC_FORMAT " before AVI data",
- GST_FOURCC_ARGS (tag));
- /* fall-through */
-
- case GST_RIFF_TAG_JUNK:
- if (!gst_avi_demux_skip (avi, prevent_eos))
- return FALSE;
- break;
- }
- break;
-
- default:
- if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
- ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
- goto done;
- }
- /* pass-through */
-
- case GST_RIFF_TAG_idx1:
- case GST_RIFF_TAG_JUNK:
- if (!gst_avi_demux_skip (avi, prevent_eos)) {
- return FALSE;
- }
- break;
- }
- }
-done:
- /* And then, we get the data */
- if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
- return FALSE;
-
- if (!(tag = gst_riff_peek_tag (riff, NULL)))
- return FALSE;
-
- /* Support for rec-list files */
- switch (tag) {
- case GST_RIFF_TAG_LIST:
- if (!(tag = gst_riff_peek_list (riff)))
- return FALSE;
- if (tag == GST_RIFF_rec) {
- /* Simply skip the list */
- if (!gst_riff_read_list (riff, &tag))
- return FALSE;
- if (!(tag = gst_riff_peek_tag (riff, NULL)))
- return FALSE;
- }
- break;
-
- case GST_RIFF_TAG_JUNK:
- gst_avi_demux_skip (avi, prevent_eos);
- return FALSE;
- }
-
- if (ret_tag)
- *ret_tag = tag;
-
- return TRUE;
-}
-#endif
-
-/*
- * gst_avi_demux_peek_tag:
- *
- * Returns the tag and size of the next chunk
- */
-static GstFlowReturn
-gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
- guint * size)
-{
- GstFlowReturn res = GST_FLOW_OK;
- GstBuffer *buf = NULL;
- guint bufsize;
-
- res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
- if (res != GST_FLOW_OK)
- goto pull_failed;
-
- bufsize = GST_BUFFER_SIZE (buf);
- if (bufsize != 8)
- goto wrong_size;
-
- *tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
- *size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
-
- GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
- G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
- *size, offset + 8, offset + 8 + (gint64) * size);
-done:
- gst_buffer_unref (buf);
-
- return res;
-
- /* ERRORS */
-pull_failed:
- {
- GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
- return res;
- }
-wrong_size:
- {
- GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
- res = GST_FLOW_ERROR;
- goto done;
- }
-}
-
-/*
- * gst_avi_demux_next_data_buffer:
- *
- * Returns the offset and size of the next buffer
- * Position is the position of the buffer (after tag and size)
- */
-static GstFlowReturn
-gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
- guint32 * tag, guint * size)
-{
- guint64 off = *offset;
- guint _size = 0;
- GstFlowReturn res;
-
- do {
- res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
- if (res != GST_FLOW_OK)
- break;
- if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
- off += 8 + 4; /* skip tag + size + subtag */
- else {
- *offset = off + 8;
- *size = _size;
- break;
- }
- } while (TRUE);
-
- return res;
-}
-
-/*
- * gst_avi_demux_stream_scan:
- * @avi: calling element (used for debugging/errors).
- * @index: list of index entries, returned by this function.
- * @alloc_list: list of allocated data, returned by this function.
- *
- * Scan the file for all chunks to "create" a new index.
- * Return value indicates if we can continue reading the stream. It
- * does not say anything about whether we created an index.
- *
- * pull-range based
- */
-static gboolean
-gst_avi_demux_stream_scan (GstAviDemux * avi,
- GList ** index, GList ** alloc_list)
-{
- GstFlowReturn res;
- gst_avi_index_entry *entry, *entries = NULL;
- avi_stream_context *stream;
- GstFormat format;
- guint64 pos = avi->offset;
- guint64 length;
- gint64 tmplength;
- guint32 tag = 0;
- GList *list = NULL;
- guint index_size = 0;
-
- /* FIXME:
- * - implement non-seekable source support.
- */
- GST_DEBUG_OBJECT (avi,
- "Creating index %s existing index, starting at offset %" G_GUINT64_FORMAT,
- ((*index) ? "with" : "without"), pos);
-
- format = GST_FORMAT_BYTES;
- if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
- return FALSE;
-
- length = tmplength;
-
- if (*index) {
- entry = g_list_last (*index)->data;
- pos = entry->offset + avi->index_offset + entry->size;
- if (entry->size & 1)
- pos++;
-
- if (pos >= length) {
- GST_LOG_OBJECT (avi, "Complete index, we're done");
- return TRUE;
- }
-
- GST_LOG_OBJECT (avi, "Incomplete index, seeking to last valid entry @ %"
- G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT " (%"
- G_GUINT64_FORMAT "+%u)", pos, length, entry->offset, entry->size);
- }
-
- while (TRUE) {
- guint stream_nr;
- guint size = 0;
-
- res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
- if (G_UNLIKELY (res != GST_FLOW_OK))
- break;
-
- /* check valid stream */
- stream_nr = CHUNKID_TO_STREAMNR (tag);
- if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
- GST_WARNING_OBJECT (avi,
- "Index entry has invalid stream nr %d", stream_nr);
- goto next;
- }
-
- stream = &avi->stream[stream_nr];
- if (G_UNLIKELY (stream->pad == NULL)) {
- GST_WARNING_OBJECT (avi,
- "Stream %d does not have an output pad, can't create new index",
- stream_nr);
- goto next;
- }
-
- /* pre-allocate */
- if (G_UNLIKELY (index_size % 1024 == 0)) {
- entries = g_new (gst_avi_index_entry, 1024);
- *alloc_list = g_list_prepend (*alloc_list, entries);
- }
- entry = &entries[index_size % 1024];
-
- entry->index_nr = index_size++;
- entry->stream_nr = stream_nr;
- entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
- entry->offset = pos - avi->index_offset;
- entry->size = size;
-
- /* timestamps, get timestamps of two consecutive frames to calculate
- * timestamp and duration. */
- format = GST_FORMAT_TIME;
- if (stream->is_vbr) {
- /* VBR stream */
- entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_frames);
- entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_frames + 1);
- } else {
- /* constant rate stream */
- entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
- stream->total_bytes);
- entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
- stream->total_bytes + entry->size);
- }
- entry->dur -= entry->ts;
-
- /* stream position */
- entry->bytes_before = stream->total_bytes;
- stream->total_bytes += entry->size;
- entry->frames_before = stream->total_frames;
- stream->total_frames++;
- stream->idx_duration = entry->ts + entry->dur;
-
- list = g_list_prepend (list, entry);
- GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
- G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
- index_size - 1, entry->frames_before, entry->offset,
- GST_TIME_ARGS (entry->ts), entry->stream_nr);
-
- next:
- /* update position */
- pos += GST_ROUND_UP_2 (size);
- if (G_UNLIKELY (pos > length)) {
- GST_WARNING_OBJECT (avi,
- "Stopping index lookup since we are further than EOF");
- break;
- }
- }
-
- /* FIXME: why is this disabled */
-#if 0
- while (gst_avi_demux_sync (avi, &tag, TRUE)) {
- guint stream_nr = CHUNKID_TO_STREAMNR (tag);
- guint8 *data;
- GstFormat format = GST_FORMAT_TIME;
-
- if (stream_nr >= avi->num_streams)
- goto next;
- stream = &avi->stream[stream_nr];
-
- /* get chunk size */
- if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
- goto next;
-
- /* fill in */
- entry->index_nr = index_size++;
- entry->stream_nr = stream_nr;
- entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
- entry->offset = gst_bytestream_tell (riff->bs) + 8 - avi->index_offset;
- entry->size = GST_READ_UINT32_LE (&data[4]);
-
- /* timestamps */
- if (stream->is_vbr) {
- /* VBR stream */
- entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_frames);
- entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
- stream->total_frames + 1);
- } else {
- /* constant rate stream */
- entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
- stream->total_bytes);
- entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
- stream->total_bytes + entry->size);
- }
- entry->dur -= entry->ts;
-
- /* stream position */
- entry->bytes_before = stream->total_bytes;
- stream->total_bytes += entry->size;
- entry->frames_before = stream->total_frames;
- stream->total_frames++;
-
- list = g_list_prepend (list, entry);
- GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
- G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
- index_size - 1, entry->frames_before, entry->offset,
- GST_TIME_ARGS (entry->ts), entry->stream_nr);
-
- next:
- if (!gst_avi_demux_skip (avi, TRUE))
- break;
- }
- /* seek back */
- if (!(event = gst_riff_read_seek (riff, pos))) {
- g_list_free (list);
- return FALSE;
- }
- gst_event_unref (event);
-
-#endif
-
- GST_DEBUG_OBJECT (avi, "index created, %d items", index_size);
-
- *index = g_list_concat (*index, g_list_reverse (list));
-
- return TRUE;
-}
-
-/*
- * gst_avi_demux_massage_index:
- * @avi: calling element (used for debugging/errors).
- *
- * We're going to go over each entry in the index and finetune
- * some things we don't like about AVI. For example, a single
- * chunk might be too long. Also, individual streams might be
- * out-of-sync. In the first case, we cut the chunk in several
- * smaller pieces. In the second case, we re-order chunk reading
- * order. The end result should be a smoother playing AVI.
- */
-static gboolean
-gst_avi_demux_massage_index (GstAviDemux * avi,
- GList * list, GList * alloc_list)
-{
- gst_avi_index_entry *entry;
- avi_stream_context *stream;
- guint i;
- GList *node;
- gint64 delay = G_GINT64_CONSTANT (0);
-
- GST_LOG_OBJECT (avi, "Starting index massage, nr_entries = %d",
- list ? g_list_length (list) : 0);
-
- if (list) {
-#ifndef GST_DISABLE_GST_DEBUG
- guint num_added_total = 0;
- guint num_per_stream[GST_AVI_DEMUX_MAX_STREAMS] = { 0, };
-#endif
- GST_LOG_OBJECT (avi,
- "I'm now going to cut large chunks into smaller pieces");
-
- /* cut chunks in small (seekable) pieces
- * FIXME: this should be a property where a value of
- * GST_CLOCK_TIME_NONE would disable the chunking
- */
-#define MAX_DURATION (GST_SECOND / 2)
- for (i = 0; i < avi->num_streams; i++) {
- /* only chop streams that have exactly *one* chunk */
- if (avi->stream[i].total_frames != 1)
- continue;
-
- for (node = list; node != NULL; node = node->next) {
- entry = node->data;
-
- if (entry->stream_nr != i)
- continue;
-
- /* check for max duration of a single buffer. I suppose that
- * the allocation of index entries could be improved. */
- stream = &avi->stream[entry->stream_nr];
- if (entry->dur > MAX_DURATION
- && stream->strh->type == GST_RIFF_FCC_auds) {
- guint32 ideal_size;
- gst_avi_index_entry *entries;
- guint old_size, num_added;
- GList *node2;
-
- /* cut in 1/10th of a second */
- ideal_size = stream->strf.auds->av_bps / 10;
-
- /* ensure chunk size is multiple of blockalign */
- if (stream->strf.auds->blockalign > 1)
- ideal_size -= ideal_size % stream->strf.auds->blockalign;
-
- /* copy index */
- old_size = entry->size;
- num_added = (entry->size - 1) / ideal_size;
- avi->index_size += num_added;
- entries = g_malloc (sizeof (gst_avi_index_entry) * num_added);
- alloc_list = g_list_prepend (alloc_list, entries);
- for (node2 = node->next; node2 != NULL; node2 = node2->next) {
- gst_avi_index_entry *entry2 = node2->data;
-
- entry2->index_nr += num_added;
- if (entry2->stream_nr == entry->stream_nr)
- entry2->frames_before += num_added;
- }
-
- /* new sized index chunks */
- for (i = 0; i < num_added + 1; i++) {
- gst_avi_index_entry *entry2;
-
- if (i == 0) {
- entry2 = entry;
- } else {
- entry2 = &entries[i - 1];
- list = g_list_insert_before (list, node->next, entry2);
- entry = node->data;
- node = node->next;
- memcpy (entry2, entry, sizeof (gst_avi_index_entry));
- }
-
- if (old_size >= ideal_size) {
- entry2->size = ideal_size;
- old_size -= ideal_size;
- } else {
- entry2->size = old_size;
- }
-
- entry2->dur = GST_SECOND * entry2->size / stream->strf.auds->av_bps;
- if (i != 0) {
- entry2->index_nr++;
- entry2->ts += entry->dur;
- entry2->offset += entry->size;
- entry2->bytes_before += entry->size;
- entry2->frames_before++;
- }
- }
-#ifndef GST_DISABLE_GST_DEBUG
- num_added_total += num_added;
-#endif
- }
- }
- }
-#ifndef GST_DISABLE_GST_DEBUG
- if (num_added_total)
- GST_LOG ("added %u new index entries", num_added_total);
-#endif
-
- GST_LOG_OBJECT (avi, "I'm now going to reorder the index entries for time");
-
- /* re-order for time */
- list = g_list_sort (list, (GCompareFunc) sort);
-
- /* make a continous array out of the list */
- avi->index_size = g_list_length (list);
- avi->index_entries = g_try_new (gst_avi_index_entry, avi->index_size);
- if (!avi->index_entries)
- goto out_of_mem;
-
- entry = (gst_avi_index_entry *) (list->data);
- delay = entry->ts;
-
- GST_LOG_OBJECT (avi,
- "Building index array, nr_entries = %d (time offset = %"
- GST_TIME_FORMAT, avi->index_size, GST_TIME_ARGS (delay));
-
- for (i = 0, node = list; node != NULL; node = node->next, i++) {
- entry = node->data;
- entry->index_nr = i;
- entry->ts -= delay;
- memcpy (&avi->index_entries[i], entry, sizeof (gst_avi_index_entry));
-#ifndef GST_DISABLE_GST_DEBUG
- num_per_stream[entry->stream_nr]++;
-#endif
-
- GST_LOG_OBJECT (avi, "Sorted index entry %3d for stream %d of size %6u"
- " at offset %7" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT
- " dur %" GST_TIME_FORMAT,
- avi->index_entries[i].index_nr, entry->stream_nr, entry->size,
- entry->offset, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
- }
- if (delay) {
- for (i = 0; i < avi->num_streams; i++) {
- stream = &avi->stream[i];
- stream->idx_duration -= delay;
- }
- }
-#ifndef GST_DISABLE_GST_DEBUG
- {
- gchar str[GST_AVI_DEMUX_MAX_STREAMS * (1 + 6 + 2)];
- gchar *pad_name;
-
- for (i = 0; i < avi->num_streams; i++) {
- if (!avi->stream[i].pad)
- continue;
- pad_name = GST_OBJECT_NAME (avi->stream[i].pad);
- sprintf (&str[i * (1 + 6 + 2)], " %6u %c", num_per_stream[i],
- pad_name[0]);
- }
- GST_LOG_OBJECT (avi, "indizies per stream:%20s", str);
- }
-#endif
-
- GST_LOG_OBJECT (avi, "Freeing original index list");
- /* all the node->data in list point to alloc_list chunks */
-
- g_list_free (list);
- }
- if (alloc_list) {
- g_list_foreach (alloc_list, (GFunc) g_free, NULL);
- g_list_free (alloc_list);
- }
-#ifndef GST_DISABLE_GST_DEBUG
- for (i = 0; i < avi->num_streams; i++) {
- GST_LOG_OBJECT (avi, "Stream %d, %d frames, %8" G_GUINT64_FORMAT " bytes",
- i, avi->stream[i].total_frames, avi->stream[i].total_bytes);
- }
-#endif
-
- GST_LOG_OBJECT (avi, "Index massaging done");
- return TRUE;
-
- /* ERRORS */
-out_of_mem:
- GST_WARNING_OBJECT (avi, "Out of memory for %" G_GSIZE_FORMAT " bytes",
- sizeof (gst_avi_index_entry) * avi->index_size);
- return FALSE;
-}
-
-static void
-gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
-{
- gint stream;
- GstClockTime total;
-
- total = GST_CLOCK_TIME_NONE;
-
- /* all streams start at a timestamp 0 */
- for (stream = 0; stream < avi->num_streams; stream++) {
- GstClockTime duration, hduration;
- avi_stream_context *streamc = &avi->stream[stream];
- gst_riff_strh *strh = streamc->strh;
-
- if (!strh)
- continue;
-
- /* get header duration for the stream */
- hduration = streamc->hdr_duration;
-
- /* index duration calculated during parsing, invariant under massage */
- duration = streamc->idx_duration;
-
- /* now pick a good duration */
- if (GST_CLOCK_TIME_IS_VALID (duration)) {
- /* index gave valid duration, use that */
- GST_INFO ("Stream %d duration according to index: %" GST_TIME_FORMAT,
- stream, GST_TIME_ARGS (duration));
- } else {
- /* fall back to header info to calculate a duration */
- duration = hduration;
- }
- /* set duration for the stream */
- streamc->duration = duration;
-
- /* find total duration */
- if (total == GST_CLOCK_TIME_NONE || duration > total)
- total = duration;
- }
-
- if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
- /* now update the duration for those streams where we had none */
- for (stream = 0; stream < avi->num_streams; stream++) {
- avi_stream_context *streamc = &avi->stream[stream];
-
- if (!GST_CLOCK_TIME_IS_VALID (streamc->duration)
- || streamc->duration == 0) {
- streamc->duration = total;
-
- GST_INFO ("Stream %d duration according to total: %" GST_TIME_FORMAT,
- stream, GST_TIME_ARGS (total));
- }
- }
- }
-
- /* and set the total duration in the segment. */
- GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
- GST_TIME_ARGS (total));
-
- gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
-}
-
-/* returns FALSE if there are no pads to deliver event to,
- * otherwise TRUE (whatever the outcome of event sending) */
-static gboolean
-gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
-{
- gboolean result = FALSE;
- gint i;
-
- GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
- GST_EVENT_TYPE_NAME (event), avi->num_streams);
-
- if (avi->num_streams) {
- for (i = 0; i < avi->num_streams; i++) {
- avi_stream_context *stream = &avi->stream[i];
-
- if (stream->pad) {
- result = TRUE;
- gst_pad_push_event (stream->pad, gst_event_ref (event));
- }
- }
- }
- gst_event_unref (event);
- return result;
-}
-
-/*
- * Read AVI headers when streaming
- */
-static GstFlowReturn
-gst_avi_demux_stream_header_push (GstAviDemux * avi)
-{
- GstFlowReturn ret = GST_FLOW_OK;
- guint32 tag = 0;
- guint32 ltag = 0;
- guint32 size = 0;
- const guint8 *data;
- GstBuffer *buf = NULL, *sub = NULL;
- guint offset = 4;
- gint64 stop;
-
- GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
-
- switch (avi->header_state) {
- case GST_AVI_DEMUX_HEADER_TAG_LIST:
- if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
- avi->offset += 8 + ((size + 1) & ~1);
- if (tag != GST_RIFF_TAG_LIST)
- goto header_no_list;
-
- gst_adapter_flush (avi->adapter, 8);
- /* Find the 'hdrl' LIST tag */
- GST_DEBUG ("Reading %d bytes", size);
- buf = gst_adapter_take_buffer (avi->adapter, size);
-
- if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
- goto header_no_hdrl;
-
- /* mind padding */
- if (size & 1)
- gst_adapter_flush (avi->adapter, 1);
-
- GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
-
- /* the hdrl starts with a 'avih' header */
- if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
- goto header_no_avih;
-
- if (tag != GST_RIFF_TAG_avih)
- goto header_no_avih;
-
- if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
- goto header_wrong_avih;
-
- GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
-
- /* now, read the elements from the header until the end */
- while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
- &sub)) {
- /* sub can be NULL on empty tags */
- if (!sub)
- continue;
-
- switch (tag) {
- case GST_RIFF_TAG_LIST:
- if (GST_BUFFER_SIZE (sub) < 4)
- goto next;
-
- switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
- case GST_RIFF_LIST_strl:
- if (!(gst_avi_demux_parse_stream (avi, sub))) {
- sub = NULL;
- GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
- ("failed to parse stream, ignoring"));
- goto next;
- }
- sub = NULL;
- goto next;
- case GST_RIFF_LIST_odml:
- gst_avi_demux_parse_odml (avi, sub);
- sub = NULL;
- break;
- default:
- GST_WARNING_OBJECT (avi,
- "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
- GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
- (sub))));
- /* fall-through */
- case GST_RIFF_TAG_JUNK:
- goto next;
- }
- break;
- default:
- GST_WARNING_OBJECT (avi,
- "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
- offset, GST_FOURCC_ARGS (tag));
- /* fall-through */
- case GST_RIFF_TAG_JUNK:
- next:
- /* move to next chunk */
- if (sub)
- gst_buffer_unref (sub);
- sub = NULL;
- break;
- }
- }
- gst_buffer_unref (buf);
- GST_DEBUG ("elements parsed");
-
- /* check parsed streams */
- if (avi->num_streams == 0) {
- goto no_streams;
- } else if (avi->num_streams != avi->avih->streams) {
- GST_WARNING_OBJECT (avi,
- "Stream header mentioned %d streams, but %d available",
- avi->avih->streams, avi->num_streams);
- }
- GST_DEBUG ("Get junk and info next");
- avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
- } else {
- /* Need more data */
- return ret;
- }
- /* fall-though */
- case GST_AVI_DEMUX_HEADER_INFO:
- GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
- while (TRUE) {
- if (gst_adapter_available (avi->adapter) < 12)
- return GST_FLOW_OK;
-
- data = gst_adapter_peek (avi->adapter, 12);
- tag = GST_READ_UINT32_LE (data);
- size = GST_READ_UINT32_LE (data + 4);
- ltag = GST_READ_UINT32_LE (data + 8);
-
- if (tag == GST_RIFF_TAG_LIST) {
- switch (ltag) {
- case GST_RIFF_LIST_movi:
- gst_adapter_flush (avi->adapter, 12);
- avi->offset += 12;
- goto skipping_done;
- case GST_RIFF_LIST_INFO:
- GST_DEBUG ("Found INFO chunk");
- if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
- GST_DEBUG ("got size %d", size);
- avi->offset += 12;
- gst_adapter_flush (avi->adapter, 12);
- if (size > 4) {
- buf = gst_adapter_take_buffer (avi->adapter, size - 4);
- /* mind padding */
- if (size & 1)
- gst_adapter_flush (avi->adapter, 1);
- gst_riff_parse_info (GST_ELEMENT (avi), buf,
- &avi->globaltags);
- gst_buffer_unref (buf);
-
- avi->offset += ((size + 1) & ~1) - 4;
- } else {
- GST_DEBUG ("skipping INFO LIST prefix");
- }
- } else {
- /* Need more data */
- return GST_FLOW_OK;
- }
- break;
- default:
- if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
- avi->offset += 8 + ((size + 1) & ~1);
- gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
- // ??? goto iterate; ???
- } else {
- /* Need more data */
- return GST_FLOW_OK;
- }
- break;
- }
- } else {
- if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
- avi->offset += 8 + ((size + 1) & ~1);
- gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
- //goto iterate;
- } else {
- /* Need more data */
- return GST_FLOW_OK;
- }
- }
- }
- break;
- default:
- GST_WARNING ("unhandled header state: %d", avi->header_state);
- break;
- }
-skipping_done:
-
- GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
- avi->num_streams, avi->stream[0].indexes);
-
- GST_DEBUG ("Found movi chunk. Starting to stream data");
- avi->state = GST_AVI_DEMUX_MOVI;
-
-#if 0
- /*GList *index = NULL, *alloc = NULL; */
-
- /* ######################## this need to be integrated with the state */
- /* create or read stream index (for seeking) */
- if (avi->stream[0].indexes != NULL) {
- gst_avi_demux_read_subindexes_push (avi, &index, &alloc);
- }
- if (!index) {
- if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
- gst_avi_demux_stream_index (avi, &index, &alloc);
- }
- /* some indexes are incomplete, continue streaming from there */
- if (!index)
- gst_avi_demux_stream_scan (avi, &index, &alloc);
- }
-
- /* this is a fatal error */
- if (!index)
- goto no_index;
-
- if (!gst_avi_demux_massage_index (avi, index, alloc))
- goto no_index;
-
- gst_avi_demux_calculate_durations_from_index (avi);
- /* ######################## */
-#endif
-
- /* create initial NEWSEGMENT event */
- if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
- stop = avi->segment.duration;
-
- GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
-
- if (avi->seek_event)
- gst_event_unref (avi->seek_event);
- avi->seek_event = gst_event_new_new_segment
- (FALSE, avi->segment.rate, GST_FORMAT_TIME,
- avi->segment.start, stop, avi->segment.start);
-
- /* at this point we know all the streams and we can signal the no more
- * pads signal */
- GST_DEBUG_OBJECT (avi, "signaling no more pads");
- gst_element_no_more_pads (GST_ELEMENT (avi));
-
- return GST_FLOW_OK;
-
- /* ERRORS */
-no_streams:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
- return GST_FLOW_ERROR;
- }
-header_no_list:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (no LIST at start): %"
- GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
- return GST_FLOW_ERROR;
- }
-header_no_hdrl:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (no hdrl at start): %"
- GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-header_no_avih:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (no avih at start): %"
- GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
- if (sub)
- gst_buffer_unref (sub);
-
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-header_wrong_avih:
- {
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-}
-
-/*
- * Read full AVI headers.
- */
-static GstFlowReturn
-gst_avi_demux_stream_header_pull (GstAviDemux * avi)
-{
- GstFlowReturn res;
- GstBuffer *buf, *sub = NULL;
- guint32 tag;
- GList *index = NULL, *alloc = NULL;
- guint offset = 4;
- gint64 stop;
- GstElement *element = GST_ELEMENT_CAST (avi);
-
- /* the header consists of a 'hdrl' LIST tag */
- res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
- if (res != GST_FLOW_OK)
- goto pull_range_failed;
- else if (tag != GST_RIFF_TAG_LIST)
- goto no_list;
- else if (GST_BUFFER_SIZE (buf) < 4)
- goto no_header;
-
- GST_DEBUG_OBJECT (avi, "parsing headers");
-
- /* Find the 'hdrl' LIST tag */
- while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
- GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
-
- /* Eat up */
- gst_buffer_unref (buf);
-
- /* read new chunk */
- res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
- if (res != GST_FLOW_OK)
- goto pull_range_failed;
- else if (tag != GST_RIFF_TAG_LIST)
- goto no_list;
- else if (GST_BUFFER_SIZE (buf) < 4)
- goto no_header;
- }
-
- GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
-
- /* the hdrl starts with a 'avih' header */
- if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
- goto no_avih;
- else if (tag != GST_RIFF_TAG_avih)
- goto no_avih;
- else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
- goto invalid_avih;
-
- GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
-
- /* now, read the elements from the header until the end */
- while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
- /* sub can be NULL on empty tags */
- if (!sub)
- continue;
-
- switch (tag) {
- case GST_RIFF_TAG_LIST:
- {
- guint8 *data;
- guint32 fourcc;
-
- if (GST_BUFFER_SIZE (sub) < 4)
- goto next;
-
- data = GST_BUFFER_DATA (sub);
- fourcc = GST_READ_UINT32_LE (data);
-
- switch (fourcc) {
- case GST_RIFF_LIST_strl:
- if (!(gst_avi_demux_parse_stream (avi, sub))) {
- GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
- ("failed to parse stream, ignoring"));
- sub = NULL;
- }
- sub = NULL;
- goto next;
- case GST_RIFF_LIST_odml:
- gst_avi_demux_parse_odml (avi, sub);
- sub = NULL;
- break;
- default:
- GST_WARNING_OBJECT (avi,
- "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
- GST_FOURCC_ARGS (fourcc));
- GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
- GST_BUFFER_SIZE (sub));
- /* fall-through */
- case GST_RIFF_TAG_JUNK:
- goto next;
- }
- break;
- }
- default:
- GST_WARNING_OBJECT (avi,
- "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
- GST_FOURCC_ARGS (tag), offset);
- GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
- GST_BUFFER_SIZE (sub));
- /* fall-through */
- case GST_RIFF_TAG_JUNK:
- next:
- if (sub)
- gst_buffer_unref (sub);
- sub = NULL;
- break;
- }
- }
- gst_buffer_unref (buf);
- GST_DEBUG ("elements parsed");
-
- /* check parsed streams */
- if (avi->num_streams == 0)
- goto no_streams;
- else if (avi->num_streams != avi->avih->streams) {
- GST_WARNING_OBJECT (avi,
- "Stream header mentioned %d streams, but %d available",
- avi->avih->streams, avi->num_streams);
- }
-
- GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
- G_GUINT64_FORMAT, avi->offset);
-
- /* Now, find the data (i.e. skip all junk between header and data) */
- do {
- guint size;
- guint32 tag, ltag;
-
- res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
- if (res != GST_FLOW_OK) {
- GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
- goto pull_range_failed;
- } else if (GST_BUFFER_SIZE (buf) < 12) {
- GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
- GST_BUFFER_SIZE (buf));
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-
- tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
- size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
- ltag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 8);
-
- GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
- GST_FOURCC_ARGS (tag), size);
- GST_MEMDUMP ("Tag content", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
- gst_buffer_unref (buf);
-
- switch (tag) {
- case GST_RIFF_TAG_LIST:{
- switch (ltag) {
- case GST_RIFF_LIST_movi:
- GST_DEBUG_OBJECT (avi,
- "Reached the 'movi' tag, we're done with skipping");
- goto skipping_done;
- case GST_RIFF_LIST_INFO:
- res =
- gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
- &buf);
- if (res != GST_FLOW_OK) {
- GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
- goto pull_range_failed;
- }
- GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
- if (size < 4) {
- GST_DEBUG ("skipping INFO LIST prefix");
- avi->offset += (4 - GST_ROUND_UP_2 (size));
- gst_buffer_unref (buf);
- continue;
- }
-
- sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
- gst_riff_parse_info (element, sub, &avi->globaltags);
- if (sub) {
- gst_buffer_unref (sub);
- sub = NULL;
- }
- gst_buffer_unref (buf);
- /* gst_riff_read_chunk() has already advanced avi->offset */
- break;
- default:
- GST_WARNING_OBJECT (avi,
- "Skipping unknown list tag %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (ltag));
- avi->offset += 8 + ((size + 1) & ~1);
- break;
- }
- }
- break;
- default:
- GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (tag));
- /* Fall-through */
- case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
- case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
- avi->offset += 8 + ((size + 1) & ~1);
- break;
- }
- } while (1);
-skipping_done:
-
- GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
- avi->num_streams, avi->stream[0].indexes);
-
- /* create or read stream index (for seeking) */
- if (avi->stream[0].indexes != NULL) {
- /* we read a super index already (gst_avi_demux_parse_superindex() ) */
- gst_avi_demux_read_subindexes_pull (avi, &index, &alloc);
- }
- if (!index) {
- if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
- gst_avi_demux_stream_index (avi, &index, &alloc);
- }
- /* some indexes are incomplete, continue streaming from there */
- if (!index)
- gst_avi_demux_stream_scan (avi, &index, &alloc);
- }
-
- /* this is a fatal error */
- if (!index)
- goto no_index;
-
- if (!gst_avi_demux_massage_index (avi, index, alloc))
- goto no_index;
-
- gst_avi_demux_calculate_durations_from_index (avi);
-
- /* create initial NEWSEGMENT event */
- if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
- stop = avi->segment.duration;
-
- GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
-
- if (avi->seek_event)
- gst_event_unref (avi->seek_event);
- avi->seek_event = gst_event_new_new_segment
- (FALSE, avi->segment.rate, GST_FORMAT_TIME,
- avi->segment.start, stop, avi->segment.start);
-
- /* at this point we know all the streams and we can signal the no more
- * pads signal */
- GST_DEBUG_OBJECT (avi, "signaling no more pads");
- gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
-
- return GST_FLOW_OK;
-
- /* ERRORS */
-no_list:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (no LIST at start): %"
- GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-no_header:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (no hdrl at start): %"
- GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-no_avih:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (no avih at start): %"
- GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
- if (sub)
- gst_buffer_unref (sub);
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-invalid_avih:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Invalid AVI header (cannot parse avih at start)"));
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-no_streams:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
- return GST_FLOW_ERROR;
- }
-no_index:
- {
- GST_WARNING ("file without or too big index");
- g_list_free (index);
- g_list_foreach (alloc, (GFunc) g_free, NULL);
- g_list_free (alloc);
-
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("Could not get/create index"));
- return GST_FLOW_ERROR;
- }
-pull_range_failed:
- {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
- ("pull_range flow reading header: %s", gst_flow_get_name (res)));
- return GST_FLOW_ERROR;
- }
-}
-
-/*
- * Do the actual seeking.
- */
-static gboolean
-gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
-{
- GstClockTime seek_time;
- gboolean keyframe;
- gst_avi_index_entry *entry, *kentry;
- gint old_entry;
-
- seek_time = segment->last_stop;
- keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
-
- /* FIXME: if we seek in an openDML file, we will have multiple
- * primary levels. Seeking in between those will cause havoc. */
-
- /* save old position so we can see if we must mark a discont. */
- old_entry = avi->current_entry;
-
- /* get the entry for the requested position, which is always in last_stop.
- * we search the index entry for stream 0, since all entries are sorted by
- * time and stream we automagically are positioned for the other streams as
- * well. FIXME, this code assumes the main stream with keyframes is stream 0,
- * which is mostly correct... */
- if (!(entry = gst_avi_demux_index_entry_for_time (avi, 0, seek_time)))
- goto no_entry;
-
- GST_DEBUG_OBJECT (avi,
- "Got requested entry %d [stream:%d / ts:%" GST_TIME_FORMAT
- " / duration:%" GST_TIME_FORMAT "]", entry->index_nr,
- entry->stream_nr, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
-
- /* check if we are already on a keyframe */
- if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)) {
- /* now go to the previous keyframe, this is where we should start
- * decoding from. */
- if (!(kentry = gst_avi_demux_index_prev (avi, 0, entry->index_nr,
- GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))) {
- goto no_entry;
- }
- } else {
- /* we were on a keyframe */
- kentry = entry;
- }
-
- GST_DEBUG_OBJECT (avi,
- "Got keyframe entry %d [stream:%d / ts:%" GST_TIME_FORMAT
- " / duration:%" GST_TIME_FORMAT "]", kentry->index_nr,
- entry->stream_nr, GST_TIME_ARGS (kentry->ts),
- GST_TIME_ARGS (kentry->dur));
-
- /* we must start decoding at the keyframe */
- avi->current_entry = kentry->index_nr;
-
- if (segment->rate < 0.0) {
- gst_avi_index_entry *next_keyframe;
-
- /* Because we don't know the frame order we need to push from the prev keyframe
- * to the next keyframe. If there is a smart decoder downstream he will notice
- * that there are too many encoded frames send and return UNEXPECTED when there
- * are enough decoded frames to fill the segment.
- */
- next_keyframe =
- gst_avi_demux_index_next (avi, 0, kentry->index_nr,
- GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
- if (!next_keyframe)
- next_keyframe = gst_avi_demux_index_last (avi, 0);
-
- avi->reverse_start_index = kentry->index_nr;
- avi->reverse_stop_index = next_keyframe->index_nr;
-
- GST_DEBUG_OBJECT (avi, "reverse seek: start idx (%d) and stop idx (%d)",
- avi->reverse_start_index, avi->reverse_stop_index);
- }
-
- if (keyframe) {
- /* when seeking to a keyframe, we update the result seek time
- * to the time of the keyframe. */
- seek_time = avi->index_entries[avi->current_entry].ts;
- }
-
-next:
- /* if we changed position, mark a DISCONT on all streams */
- if (avi->current_entry != old_entry) {
- gint i;
-
- for (i = 0; i < avi->num_streams; i++) {
- avi->stream[i].discont = TRUE;
- }
- }
-
- GST_DEBUG_OBJECT (avi, "seek: %" GST_TIME_FORMAT
- " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
-
- /* the seek time is also the last_stop and stream time */
- segment->last_stop = seek_time;
- segment->time = seek_time;
-
- return TRUE;
-
-no_entry:
- {
- /* we could not find an entry for the given time */
- GST_WARNING_OBJECT (avi,
- "Couldn't find AviIndexEntry for time:%" GST_TIME_FORMAT,
- GST_TIME_ARGS (seek_time));
- if (avi->current_entry >= avi->index_size && avi->index_size > 0)
- avi->current_entry = avi->index_size - 1;
-
- goto next;
- }
-}
-
-/*
- * Handle seek event.
- */
-static gboolean
-gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
-{
- gdouble rate;
- GstFormat format;
- GstSeekFlags flags;
- GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
- gint64 cur, stop;
- gboolean flush;
- gboolean update;
- GstSegment seeksegment = { 0, };
-
- if (event) {
- GST_DEBUG_OBJECT (avi, "doing seek with event");
-
- gst_event_parse_seek (event, &rate, &format, &flags,
- &cur_type, &cur, &stop_type, &stop);
-
- /* we have to have a format as the segment format. Try to convert
- * if not. */
- if (format != GST_FORMAT_TIME) {
- GstFormat fmt = GST_FORMAT_TIME;
- gboolean res = TRUE;
-
- if (cur_type != GST_SEEK_TYPE_NONE)
- res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
- if (res && stop_type != GST_SEEK_TYPE_NONE)
- res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
- if (!res)
- goto no_format;
-
- format = fmt;
- }
- GST_DEBUG_OBJECT (avi,
- "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
- GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
- /* FIXME: can we do anything with rate!=1.0 */
- } else {
- GST_DEBUG_OBJECT (avi, "doing seek without event");
- flags = 0;
- rate = 1.0;
- }
-
- /* save flush flag */
- flush = flags & GST_SEEK_FLAG_FLUSH;
-
- if (flush) {
- GstEvent *event = gst_event_new_flush_start ();
-
- /* for a flushing seek, we send a flush_start on all pads. This will
- * eventually stop streaming with a WRONG_STATE. We can thus eventually
- * take the STREAM_LOCK. */
- GST_DEBUG_OBJECT (avi, "sending flush start");
- gst_avi_demux_push_event (avi, gst_event_ref (event));
- gst_pad_push_event (avi->sinkpad, event);
- } else {
- /* a non-flushing seek, we PAUSE the task so that we can take the
- * STREAM_LOCK */
- GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
- gst_pad_pause_task (avi->sinkpad);
- }
-
- /* wait for streaming to stop */
- GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
- GST_PAD_STREAM_LOCK (avi->sinkpad);
-
- /* copy segment, we need this because we still need the old
- * segment when we close the current segment. */
- memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
-
- if (event) {
- GST_DEBUG_OBJECT (avi, "configuring seek");
- gst_segment_set_seek (&seeksegment, rate, format, flags,
- cur_type, cur, stop_type, stop, &update);
- }
-
- /* do the seek, seeksegment.last_stop contains the new position, this
- * actually never fails. */
- gst_avi_demux_do_seek (avi, &seeksegment);
-
- if (flush) {
- gint i;
-
- GST_DEBUG_OBJECT (avi, "sending flush stop");
- gst_avi_demux_push_event (avi, gst_event_new_flush_stop ());
- gst_pad_push_event (avi->sinkpad, gst_event_new_flush_stop ());
- /* reset the last flow and mark discont, FLUSH is always DISCONT */
- for (i = 0; i < avi->num_streams; i++) {
- avi->stream[i].last_flow = GST_FLOW_OK;
- avi->stream[i].discont = TRUE;
- }
- } else if (avi->segment_running) {
- GstEvent *seg;
-
- /* we are running the current segment and doing a non-flushing seek,
- * close the segment first based on the last_stop. */
- GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
- " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
- seg = gst_event_new_new_segment (TRUE,
- avi->segment.rate, avi->segment.format,
- avi->segment.start, avi->segment.last_stop, avi->segment.time);
- gst_avi_demux_push_event (avi, seg);
- }
-
- /* now update the real segment info */
- memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
-
- /* post the SEGMENT_START message when we do segmented playback */
- if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
- gst_element_post_message (GST_ELEMENT (avi),
- gst_message_new_segment_start (GST_OBJECT (avi),
- avi->segment.format, avi->segment.last_stop));
- }
-
- /* prepare for streaming again */
- if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
- stop = avi->segment.duration;
-
- /* queue the segment event for the streaming thread. */
- if (avi->seek_event)
- gst_event_unref (avi->seek_event);
- if (avi->segment.rate > 0.0) {
- avi->seek_event = gst_event_new_new_segment (FALSE,
- avi->segment.rate, avi->segment.format,
- avi->segment.last_stop, stop, avi->segment.time);
- } else {
- avi->seek_event = gst_event_new_new_segment (FALSE,
- avi->segment.rate, avi->segment.format,
- avi->segment.start, avi->segment.last_stop, avi->segment.start);
- }
-
- if (!avi->streaming) {
- avi->segment_running = TRUE;
- gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
- avi->sinkpad);
- }
- GST_PAD_STREAM_UNLOCK (avi->sinkpad);
-
- return TRUE;
-
- /* ERRORS */
-no_format:
- {
- GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
- return FALSE;
- }
-}
-
-/*
- * Helper for gst_avi_demux_invert()
- */
-static inline void
-swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
-{
- memcpy (tmp, d1, bytes);
- memcpy (d1, d2, bytes);
- memcpy (d2, tmp, bytes);
-}
-
-
-#define gst_avi_demux_is_uncompressed(fourcc) \
- (fourcc == GST_RIFF_DIB || \
- fourcc == GST_RIFF_rgb || \
- fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
-
-/*
- * Invert DIB buffers... Takes existing buffer and
- * returns either the buffer or a new one (with old
- * one dereferenced).
- * FIXME: can't we preallocate tmp? and remember stride, bpp?
- */
-static GstBuffer *
-gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
-{
- GstStructure *s;
- gint y, w, h;
- gint bpp, stride;
- guint8 *tmp = NULL;
-
- if (stream->strh->type != GST_RIFF_FCC_vids)
- return buf;
-
- if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
- return buf; /* Ignore non DIB buffers */
- }
-
- s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
- if (!gst_structure_get_int (s, "bpp", &bpp)) {
- GST_WARNING ("Failed to retrieve depth from caps");
- return buf;
- }
-
- if (stream->strf.vids == NULL) {
- GST_WARNING ("Failed to retrieve vids for stream");
- return buf;
- }
-
- h = stream->strf.vids->height;
- w = stream->strf.vids->width;
- stride = w * (bpp / 8);
-
- buf = gst_buffer_make_writable (buf);
- if (GST_BUFFER_SIZE (buf) < (stride * h)) {
- GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
- return buf;
- }
-
- tmp = g_malloc (stride);
-
- for (y = 0; y < h / 2; y++) {
- swap_line (GST_BUFFER_DATA (buf) + stride * y,
- GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
- }
-
- g_free (tmp);
-
- return buf;
-}
-
-/*
- * Returns the aggregated GstFlowReturn.
- */
-static GstFlowReturn
-gst_avi_demux_combine_flows (GstAviDemux * avi, avi_stream_context * stream,
- GstFlowReturn ret)
-{
- guint i;
-
- /* store the value */
- stream->last_flow = ret;
-
- /* any other error that is not-linked can be returned right away */
- if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
- goto done;
-
- /* only return NOT_LINKED if all other pads returned NOT_LINKED */
- for (i = 0; i < avi->num_streams; i++) {
- avi_stream_context *ostream = &avi->stream[i];
-
- ret = ostream->last_flow;
- /* some other return value (must be SUCCESS but we can return
- * other values as well) */
- if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
- goto done;
- }
- /* if we get here, all other pads were unlinked and we return
- * NOT_LINKED then */
-done:
- GST_LOG_OBJECT (avi, "combined return %s", gst_flow_get_name (ret));
- return ret;
-}
-
-/*
- * prepare the avi element for a reverse jump to a prev keyframe
- * this function will return the start entry. if the function returns
- * NULL there was no prev keyframe.
- */
-static gst_avi_index_entry *
-gst_avi_demux_step_reverse (GstAviDemux * avi)
-{
- gst_avi_index_entry *entry;
- gint i;
-
- avi->reverse_stop_index = avi->reverse_start_index;
- entry =
- gst_avi_demux_index_prev (avi, 0, avi->reverse_stop_index,
- GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
- if (!entry) {
- GST_DEBUG_OBJECT (avi, "no valid index entry found index %d",
- avi->reverse_stop_index);
- return NULL;
- }
- avi->current_entry = avi->reverse_start_index = entry->index_nr;
- GST_DEBUG_OBJECT (avi,
- "reverse playback jump: start idx (%d) and stop idx (%d)",
- avi->reverse_start_index, avi->reverse_stop_index);
- gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
- for (i = 0; i < avi->num_streams; i++) {
- avi->stream[i].last_flow = GST_FLOW_OK;
- avi->stream[i].discont = TRUE;
- }
- return entry;
-}
-
-/*
- * Read data from one index entry
- */
-static GstFlowReturn
-gst_avi_demux_process_next_entry (GstAviDemux * avi)
-{
- GstFlowReturn res = GST_FLOW_OK;
- gboolean processed = FALSE;
- avi_stream_context *stream;
- gst_avi_index_entry *entry;
- GstBuffer *buf;
-
- do {
- /* see if we are at the end */
- if ((avi->segment.rate > 0 && avi->current_entry >= avi->index_size))
- goto eos;
-
- /* get next entry, this will work as we checked for the index size above */
- entry = &avi->index_entries[avi->current_entry++];
-
- /* check for reverse playback */
- if (avi->segment.rate < 0 && avi->current_entry > avi->reverse_stop_index) {
- GST_LOG_OBJECT (avi, "stop_index %d reached", avi->reverse_stop_index);
-
- /* check if we have pushed enough data for this segment */
- if (avi->reverse_start_index == 0)
- goto eos_reverse_zero;
- if (avi->index_entries[avi->reverse_start_index].ts < avi->segment.start)
- goto eos_reverse_segment;
-
- if (!(entry = gst_avi_demux_step_reverse (avi)))
- goto eos;
-
- avi->current_entry++;
- }
-
- /* see if we have a valid stream, ignore if not
- * FIXME: can't we check this when building the index?
- * we check it in _parse_index(), _stream_scan()
- */
- if (entry->stream_nr >= avi->num_streams) {
- GST_WARNING_OBJECT (avi,
- "Entry %d has non-existing stream nr %d",
- avi->current_entry - 1, entry->stream_nr);
- continue;
- }
-
- /* get stream now */
- stream = &avi->stream[entry->stream_nr];
-
- if (avi->segment.rate > 0.0) {
- /* only check this for fowards playback for now */
- if ((entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
- && GST_CLOCK_TIME_IS_VALID (entry->ts)
- && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
- && (entry->ts > avi->segment.stop)) {
- goto eos_stop;
- }
- }
-
- /* skip empty entries */
- if (entry->size == 0 || !stream->pad) {
- GST_DEBUG_OBJECT (avi, "Skipping entry %d (%d, %p)",
- avi->current_entry - 1, entry->size, stream->pad);
- goto next;
- }
-
- GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
- G_GUINT64_FORMAT " (%llx)", entry->size, entry->stream_nr,
- avi->index_offset + entry->offset, avi->index_offset + entry->offset);
-
- /* pull in the data */
- res = gst_pad_pull_range (avi->sinkpad, entry->offset +
- avi->index_offset, entry->size, &buf);
- if (res != GST_FLOW_OK)
- goto pull_failed;
-
- /* check for short buffers, this is EOS as well */
- if (GST_BUFFER_SIZE (buf) < entry->size)
- goto short_buffer;
-
- /* invert the picture if needed */
- buf = gst_avi_demux_invert (stream, buf);
-
- /* mark non-keyframes */
- if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))
- GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
-
- GST_BUFFER_TIMESTAMP (buf) = entry->ts;
- GST_BUFFER_DURATION (buf) = entry->dur;
- if (stream->strh->type == GST_RIFF_FCC_vids) {
- if (stream->current_frame >= 0)
- GST_BUFFER_OFFSET (buf) = stream->current_frame;
- else {
- gint64 framenum;
- GstFormat fmt = GST_FORMAT_DEFAULT;
-
- if (gst_pad_query_convert (stream->pad, GST_FORMAT_TIME, entry->ts,
- &fmt, &framenum))
- GST_BUFFER_OFFSET (buf) = framenum;
- else
- GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
- }
- } else
- GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
- GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
- gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
-
- GST_DEBUG_OBJECT (avi, "Pushing buffer of size %d, offset %"
- G_GUINT64_FORMAT " and time %"
- GST_TIME_FORMAT " on pad %s",
- GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf),
- GST_TIME_ARGS (entry->ts), GST_PAD_NAME (stream->pad));
-
- /* update current position in the segment */
- gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
-
- /* mark discont when pending */
- if (stream->discont) {
- GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
- stream->discont = FALSE;
- }
-
- res = gst_pad_push (stream->pad, buf);
-
- /* mark as processed, we increment the frame and byte counters then
- * leave the while loop and return the GstFlowReturn */
- processed = TRUE;
- GST_DEBUG_OBJECT (avi, "Processed buffer %d: %s", entry->index_nr,
- gst_flow_get_name (res));
-
- if (avi->segment.rate < 0
- && entry->ts > avi->segment.stop && res == GST_FLOW_UNEXPECTED) {
- /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
- * we are at the end of the segment, so we just need to jump
- * back to the previous section.
- */
- GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
-
- if (!(entry = gst_avi_demux_step_reverse (avi)))
- goto eos;
-
- res = GST_FLOW_OK;
-
- stream->current_frame = entry->frames_before;
- stream->current_byte = entry->bytes_before;
-
- continue;
- }
-
- /* combine flows */
- res = gst_avi_demux_combine_flows (avi, stream, res);
-
- next:
- stream->current_frame = entry->frames_before + 1;
- stream->current_byte = entry->bytes_before + entry->size;
- } while (!processed);
-
-beach:
- GST_DEBUG_OBJECT (avi, "returning %s", gst_flow_get_name (res));
-
- return res;
-
- /* ERRORS */
-eos:
- {
- GST_LOG_OBJECT (avi, "Handled last index entry, setting EOS (%d > %d)",
- avi->current_entry, avi->index_size);
- /* we mark the first stream as EOS */
- res = GST_FLOW_UNEXPECTED;
- goto beach;
- }
-eos_stop:
- {
- GST_LOG_OBJECT (avi, "Found keyframe after segment,"
- " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
- GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (avi->segment.stop));
- res = GST_FLOW_UNEXPECTED;
- goto beach;
- }
-eos_reverse_zero:
- {
- GST_DEBUG_OBJECT (avi, "start_index was 0, setting EOS");
- res = GST_FLOW_UNEXPECTED;
- goto beach;
- }
-eos_reverse_segment:
- {
- GST_DEBUG_OBJECT (avi, "full segment pushed, setting EOS");
- res = GST_FLOW_UNEXPECTED;
- goto beach;
- }
-pull_failed:
- {
- GST_DEBUG_OBJECT (avi,
- "pull range failed: pos=%" G_GUINT64_FORMAT " size=%d",
- entry->offset + avi->index_offset, entry->size);
- goto beach;
- }
-short_buffer:
- {
- GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
- ", only got %d/%d bytes (truncated file?)", entry->offset +
- avi->index_offset, GST_BUFFER_SIZE (buf), entry->size);
- gst_buffer_unref (buf);
- res = GST_FLOW_UNEXPECTED;
- goto beach;
- }
-}
-
-/*
- * Read data. If we have an index it delegates to
- * gst_avi_demux_process_next_entry().
- */
-static GstFlowReturn
-gst_avi_demux_stream_data (GstAviDemux * avi)
-{
- guint32 tag = 0;
- guint32 size = 0;
- gint stream_nr = 0;
- GstFlowReturn res = GST_FLOW_OK;
- GstFormat format = GST_FORMAT_TIME;
-
- /* if we have a avi->index_entries[], we don't want to read
- * the stream linearly, but seek to the next ts/index_entry. */
- if (G_LIKELY (avi->index_entries != NULL))
- return gst_avi_demux_process_next_entry (avi);
-
- if (G_UNLIKELY (avi->have_eos)) {
- /* Clean adapter, we're done */
- gst_adapter_clear (avi->adapter);
- return res;
- }
-
- /*
- if (!gst_avi_demux_sync (avi, &tag, FALSE))
- return FALSE;
- */
-
- /* Iterate until need more data, so adapter won't grow too much */
- while (1) {
- if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
- return GST_FLOW_OK;
- }
-
- GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
- GST_FOURCC_ARGS (tag), size);
-
- if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
- ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
- GST_LOG ("Chunk ok");
- } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
- GST_DEBUG ("Found sub-index tag");
- if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
- if ((size > 0) && (size != -1)) {
- GST_DEBUG (" skipping %d bytes for now", size);
- gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
- }
- }
- return GST_FLOW_OK;
- } else if (tag == GST_RIFF_TAG_JUNK) {
- GST_DEBUG ("JUNK chunk, skipping");
- } else if (tag == GST_RIFF_TAG_idx1) {
- GST_DEBUG ("Found index tag, stream done");
- avi->have_eos = TRUE;
- return GST_FLOW_UNEXPECTED;
- } else if (tag == GST_RIFF_TAG_LIST) {
- /* movi chunks might be grouped in rec list */
- if (gst_adapter_available (avi->adapter) >= 12) {
- GST_DEBUG ("Found LIST tag, skipping LIST header");
- gst_adapter_flush (avi->adapter, 12);
- continue;
- }
- return GST_FLOW_OK;
- } else if (tag == GST_RIFF_TAG_JUNK) {
- /* rec list might contain JUNK chunks */
- GST_DEBUG ("Found JUNK tag");
- if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
- if ((size > 0) && (size != -1)) {
- GST_DEBUG (" skipping %d bytes for now", size);
- gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
- continue;
- }
- }
- return GST_FLOW_OK;
- } else {
- GST_DEBUG ("No more stream chunks, send EOS");
- avi->have_eos = TRUE;
- return GST_FLOW_UNEXPECTED;
- }
-
- if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
- if ((size == 0) || (size == -1))
- gst_adapter_flush (avi->adapter, 8);
- return GST_FLOW_OK;
- }
- GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
- GST_FOURCC_ARGS (tag), size);
-
- stream_nr = CHUNKID_TO_STREAMNR (tag);
-
- if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
- /* recoverable */
- GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
- stream_nr, GST_FOURCC_ARGS (tag));
- avi->offset += 8 + ((size + 1) & ~1);
- gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
- } else {
- avi_stream_context *stream;
- GstClockTime next_ts = 0;
- GstBuffer *buf;
-
- gst_adapter_flush (avi->adapter, 8);
-
- /* get buffer */
- buf = gst_adapter_take_buffer (avi->adapter, ((size + 1) & ~1));
- /* patch the size */
- GST_BUFFER_SIZE (buf) = size;
- avi->offset += 8 + ((size + 1) & ~1);
-
- stream = &avi->stream[stream_nr];
-
- /* set delay (if any)
- if (stream->strh->init_frames == stream->current_frame &&
- stream->delay == 0)
- stream->delay = next_ts;
- */
-
- stream->current_frame++;
- stream->current_byte += size;
-
- /* parsing of corresponding header may have failed */
- if (G_UNLIKELY (!stream->pad)) {
- GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
- GST_FOURCC_ARGS (tag));
- gst_buffer_unref (buf);
- } else {
- GstClockTime dur_ts = 0;
-
- /* get time of this buffer */
- gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
- if (G_UNLIKELY (format != GST_FORMAT_TIME))
- goto wrong_format;
-
- /* invert the picture if needed */
- buf = gst_avi_demux_invert (stream, buf);
-
- gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
- if (G_UNLIKELY (format != GST_FORMAT_TIME))
- goto wrong_format;
-
- GST_BUFFER_TIMESTAMP (buf) = next_ts;
- GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
- if (stream->strh->type == GST_RIFF_FCC_vids)
- GST_BUFFER_OFFSET (buf) = stream->current_frame - 1;
- else
- GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
-
- gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
- GST_DEBUG_OBJECT (avi,
- "Pushing buffer with time=%" GST_TIME_FORMAT
- ", offset %" G_GUINT64_FORMAT " and size %d over pad %s",
- GST_TIME_ARGS (next_ts), GST_BUFFER_OFFSET (buf), size,
- GST_PAD_NAME (stream->pad));
-
- /* update current position in the segment */
- gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
-
- /* mark discont when pending */
- if (G_UNLIKELY (stream->discont)) {
- GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
- stream->discont = FALSE;
- }
- res = gst_pad_push (stream->pad, buf);
-
- /* combine flows */
- res = gst_avi_demux_combine_flows (avi, stream, res);
- if (G_UNLIKELY (res != GST_FLOW_OK)) {
- GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
- return res;
- }
- }
- }
- }
-
-done:
- return res;
-
- /* ERRORS */
-wrong_format:
- {
- GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
- gst_format_get_name (format));
- res = GST_FLOW_ERROR;
- goto done;
- }
-}
-
-/*
- * Send pending tags.
- */
-static void
-push_tag_lists (GstAviDemux * avi)
-{
- guint i;
-
- if (!avi->got_tags)
- return;
-
- GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
-
- for (i = 0; i < avi->num_streams; i++)
- if (avi->stream[i].pad && avi->stream[i].taglist) {
- GST_DEBUG_OBJECT (avi->stream[i].pad, "Tags: %" GST_PTR_FORMAT,
- avi->stream[i].taglist);
- gst_element_found_tags_for_pad (GST_ELEMENT (avi), avi->stream[i].pad,
- avi->stream[i].taglist);
- avi->stream[i].taglist = NULL;
- }
-
- if (avi->globaltags == NULL)
- avi->globaltags = gst_tag_list_new ();
-
- gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE,
- GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
-
- GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, avi->globaltags);
- gst_element_found_tags (GST_ELEMENT (avi), avi->globaltags);
- avi->globaltags = NULL;
- avi->got_tags = FALSE;
-}
-
-static void
-gst_avi_demux_loop (GstPad * pad)
-{
- GstFlowReturn res;
- GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
-
- switch (avi->state) {
- case GST_AVI_DEMUX_START:
- if (G_UNLIKELY ((res =
- gst_avi_demux_stream_init_pull (avi)) != GST_FLOW_OK)) {
- GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
- goto pause;
- }
- avi->state = GST_AVI_DEMUX_HEADER;
- /* fall-through */
- case GST_AVI_DEMUX_HEADER:
- if (G_UNLIKELY ((res =
- gst_avi_demux_stream_header_pull (avi)) != GST_FLOW_OK)) {
- GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
- goto pause;
- }
- avi->state = GST_AVI_DEMUX_MOVI;
- break;
- case GST_AVI_DEMUX_MOVI:
- if (G_UNLIKELY (avi->seek_event)) {
- gst_avi_demux_push_event (avi, avi->seek_event);
- avi->seek_event = NULL;
- }
- if (G_UNLIKELY (avi->got_tags)) {
- push_tag_lists (avi);
- }
- /* process each index entry in turn */
- res = gst_avi_demux_stream_data (avi);
-
- /* pause when error */
- if (G_UNLIKELY (res != GST_FLOW_OK)) {
- GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
- goto pause;
- }
- break;
- default:
- GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
- res = GST_FLOW_ERROR;
- goto pause;
- }
-
- GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
-
- return;
-
- /* ERRORS */
-pause:
- GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
- avi->segment_running = FALSE;
- gst_pad_pause_task (avi->sinkpad);
-
- if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
- gboolean push_eos = TRUE;
-
- if (res == GST_FLOW_UNEXPECTED) {
- /* handle end-of-stream/segment */
- if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
- gint64 stop;
-
- if ((stop = avi->segment.stop) == -1)
- stop = avi->segment.duration;
-
- GST_INFO_OBJECT (avi, "sending segment_done");
-
- gst_element_post_message
- (GST_ELEMENT (avi),
- gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
- stop));
- push_eos = FALSE;
- }
- } else {
- /* for fatal errors we post an error message */
- GST_ELEMENT_ERROR (avi, STREAM, FAILED,
- (_("Internal data stream error.")),
- ("streaming stopped, reason %s", gst_flow_get_name (res)));
- }
- if (push_eos) {
- GST_INFO_OBJECT (avi, "sending eos");
- if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
- (res == GST_FLOW_UNEXPECTED)) {
- GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
- (NULL), ("got eos but no streams (yet)"));
- }
- }
- }
-}
-
-
-static GstFlowReturn
-gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
-{
- GstFlowReturn res;
- GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
-
- GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
- gst_adapter_push (avi->adapter, buf);
-
- switch (avi->state) {
- case GST_AVI_DEMUX_START:
- if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
- GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
- break;
- }
- break;
- case GST_AVI_DEMUX_HEADER:
- if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
- GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
- break;
- }
- break;
- case GST_AVI_DEMUX_MOVI:
- if (G_UNLIKELY (avi->seek_event)) {
- gst_avi_demux_push_event (avi, avi->seek_event);
- avi->seek_event = NULL;
- }
- if (G_UNLIKELY (avi->got_tags)) {
- push_tag_lists (avi);
- }
- res = gst_avi_demux_stream_data (avi);
- break;
- default:
- GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
- ("Illegal internal state"));
- res = GST_FLOW_ERROR;
- break;
- }
-
- GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
- gst_flow_get_name (res));
-
- return res;
-}
-
-static gboolean
-gst_avi_demux_sink_activate (GstPad * sinkpad)
-{
- if (gst_pad_check_pull_range (sinkpad)) {
- GST_DEBUG ("going to pull mode");
- return gst_pad_activate_pull (sinkpad, TRUE);
- } else {
- GST_DEBUG ("going to push (streaming) mode");
- return gst_pad_activate_push (sinkpad, TRUE);
- }
-}
-
-static gboolean
-gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
-{
- GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
-
- if (active) {
- avi->segment_running = TRUE;
- avi->streaming = FALSE;
- return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
- sinkpad);
- } else {
- avi->segment_running = FALSE;
- return gst_pad_stop_task (sinkpad);
- }
-}
-
-static gboolean
-gst_avi_demux_activate_push (GstPad * pad, gboolean active)
-{
- GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
-
- if (active) {
- GST_DEBUG ("avi: activating push/chain function");
- avi->streaming = TRUE;
- } else {
- GST_DEBUG ("avi: deactivating push/chain function");
- }
-
- return TRUE;
-}
-
-static GstStateChangeReturn
-gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
-{
- GstStateChangeReturn ret;
- GstAviDemux *avi = GST_AVI_DEMUX (element);
-
- switch (transition) {
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- avi->streaming = FALSE;
- gst_segment_init (&avi->segment, GST_FORMAT_TIME);
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
- if (ret == GST_STATE_CHANGE_FAILURE)
- goto done;
-
- switch (transition) {
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- gst_avi_demux_reset (avi);
- break;
- default:
- break;
- }
-
-done:
- return ret;
-}