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/* GStreamer
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* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
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* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* Copyright (C) 2005 Jan Schmidt <thaytan@mad.scientist.com>
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* Copyright (C) 2007 Wim Taymans <wim.taymans@gmail.com>
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* Copyright (C) 2007 Andy Wingo <wingo@pobox.com>
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* Copyright (C) 2008 Nokia Corporation. (contact <stefan.kost@nokia.com>)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-input-selector
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* @see_also: #GstOutputSelector
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*
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* Direct one out of N input streams to the output pad.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstinputselector.h"
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#include "gstplay-marshal.h"
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GST_DEBUG_CATEGORY_STATIC (input_selector_debug);
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#define GST_CAT_DEFAULT input_selector_debug
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static const GstElementDetails gst_input_selector_details =
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GST_ELEMENT_DETAILS ("Input selector",
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"Generic",
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"N-to-1 input stream selectoring",
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"Julien Moutte <julien@moutte.net>\n"
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"Ronald S. Bultje <rbultje@ronald.bitfreak.net>\n"
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"Jan Schmidt <thaytan@mad.scientist.com>\n"
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"Wim Taymans <wim.taymans@gmail.com>");
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static GstStaticPadTemplate gst_input_selector_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate gst_input_selector_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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enum
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{
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PROP_0,
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PROP_N_PADS,
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PROP_ACTIVE_PAD,
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PROP_SELECT_ALL,
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PROP_LAST
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};
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#define DEFAULT_PAD_ALWAYS_OK TRUE
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enum
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{
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PROP_PAD_0,
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PROP_PAD_RUNNING_TIME,
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PROP_PAD_TAGS,
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PROP_PAD_ACTIVE,
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PROP_PAD_ALWAYS_OK,
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PROP_PAD_LAST
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};
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enum
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{
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/* methods */
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SIGNAL_BLOCK,
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SIGNAL_SWITCH,
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LAST_SIGNAL
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};
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static guint gst_input_selector_signals[LAST_SIGNAL] = { 0 };
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static gboolean gst_input_selector_is_active_sinkpad (GstInputSelector * sel,
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GstPad * pad);
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static GstPad *gst_input_selector_activate_sinkpad (GstInputSelector * sel,
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GstPad * pad);
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static GstPad *gst_input_selector_get_linked_pad (GstPad * pad,
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gboolean strict);
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static gboolean gst_input_selector_check_eos (GstElement * selector);
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#define GST_TYPE_SELECTOR_PAD \
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(gst_selector_pad_get_type())
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#define GST_SELECTOR_PAD(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SELECTOR_PAD, GstSelectorPad))
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#define GST_SELECTOR_PAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SELECTOR_PAD, GstSelectorPadClass))
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#define GST_IS_SELECTOR_PAD(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SELECTOR_PAD))
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#define GST_IS_SELECTOR_PAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SELECTOR_PAD))
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#define GST_SELECTOR_PAD_CAST(obj) \
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((GstSelectorPad *)(obj))
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typedef struct _GstSelectorPad GstSelectorPad;
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typedef struct _GstSelectorPadClass GstSelectorPadClass;
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struct _GstSelectorPad
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{
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GstPad parent;
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gboolean active; /* when buffer have passed the pad */
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gboolean eos; /* when EOS has been received */
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gboolean discont; /* after switching we create a discont */
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gboolean always_ok;
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GstSegment segment; /* the current segment on the pad */
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GstTagList *tags; /* last tags received on the pad */
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gboolean segment_pending;
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};
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struct _GstSelectorPadClass
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{
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GstPadClass parent;
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};
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static void gst_selector_pad_class_init (GstSelectorPadClass * klass);
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static void gst_selector_pad_init (GstSelectorPad * pad);
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static void gst_selector_pad_finalize (GObject * object);
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static void gst_selector_pad_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static void gst_selector_pad_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static GstPadClass *selector_pad_parent_class = NULL;
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static gint64 gst_selector_pad_get_running_time (GstSelectorPad * pad);
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static void gst_selector_pad_reset (GstSelectorPad * pad);
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static gboolean gst_selector_pad_event (GstPad * pad, GstEvent * event);
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static GstCaps *gst_selector_pad_getcaps (GstPad * pad);
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static GList *gst_selector_pad_get_linked_pads (GstPad * pad);
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static GstFlowReturn gst_selector_pad_chain (GstPad * pad, GstBuffer * buf);
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static GstFlowReturn gst_selector_pad_bufferalloc (GstPad * pad,
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guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
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GType
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gst_selector_pad_get_type (void)
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{
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static GType selector_pad_type = 0;
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if (!selector_pad_type) {
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static const GTypeInfo selector_pad_info = {
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sizeof (GstSelectorPadClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_selector_pad_class_init,
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NULL,
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NULL,
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sizeof (GstSelectorPad),
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0,
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(GInstanceInitFunc) gst_selector_pad_init,
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};
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selector_pad_type =
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g_type_register_static (GST_TYPE_PAD, "GstPlaybin2SelectorPad",
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&selector_pad_info, 0);
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}
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return selector_pad_type;
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}
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static void
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gst_selector_pad_class_init (GstSelectorPadClass * klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass *) klass;
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selector_pad_parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_selector_pad_finalize;
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gobject_class->get_property =
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GST_DEBUG_FUNCPTR (gst_selector_pad_get_property);
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gobject_class->set_property =
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GST_DEBUG_FUNCPTR (gst_selector_pad_set_property);
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g_object_class_install_property (gobject_class, PROP_PAD_RUNNING_TIME,
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g_param_spec_int64 ("running-time", "Running time",
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"Running time of stream on pad", 0, G_MAXINT64, 0, G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, PROP_PAD_TAGS,
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g_param_spec_boxed ("tags", "Tags",
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"The currently active tags on the pad", GST_TYPE_TAG_LIST,
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G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, PROP_PAD_ACTIVE,
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g_param_spec_boolean ("active", "Active",
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"If the pad is currently active", FALSE, G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, PROP_PAD_ALWAYS_OK,
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g_param_spec_boolean ("always-ok", "Always OK",
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"Make an inactive pad return OK instead of NOT_LINKED",
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DEFAULT_PAD_ALWAYS_OK, G_PARAM_READWRITE));
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}
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static void
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gst_selector_pad_init (GstSelectorPad * pad)
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{
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pad->always_ok = DEFAULT_PAD_ALWAYS_OK;
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gst_selector_pad_reset (pad);
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}
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static void
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gst_selector_pad_finalize (GObject * object)
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{
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GstSelectorPad *pad;
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pad = GST_SELECTOR_PAD_CAST (object);
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if (pad->tags)
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gst_tag_list_free (pad->tags);
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G_OBJECT_CLASS (selector_pad_parent_class)->finalize (object);
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}
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static void
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gst_selector_pad_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstSelectorPad *spad = GST_SELECTOR_PAD_CAST (object);
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switch (prop_id) {
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case PROP_PAD_ALWAYS_OK:
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GST_OBJECT_LOCK (object);
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spad->always_ok = g_value_get_boolean (value);
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GST_OBJECT_UNLOCK (object);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_selector_pad_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstSelectorPad *spad = GST_SELECTOR_PAD_CAST (object);
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switch (prop_id) {
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case PROP_PAD_RUNNING_TIME:
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g_value_set_int64 (value, gst_selector_pad_get_running_time (spad));
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break;
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case PROP_PAD_TAGS:
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GST_OBJECT_LOCK (object);
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g_value_set_boxed (value, spad->tags);
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GST_OBJECT_UNLOCK (object);
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break;
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case PROP_PAD_ACTIVE:
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{
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GstInputSelector *sel;
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sel = GST_INPUT_SELECTOR (gst_pad_get_parent (spad));
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g_value_set_boolean (value, gst_input_selector_is_active_sinkpad (sel,
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GST_PAD_CAST (spad)));
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gst_object_unref (sel);
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break;
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}
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case PROP_PAD_ALWAYS_OK:
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GST_OBJECT_LOCK (object);
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g_value_set_boolean (value, spad->always_ok);
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GST_OBJECT_UNLOCK (object);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gint64
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gst_selector_pad_get_running_time (GstSelectorPad * pad)
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{
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gint64 ret = 0;
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GST_OBJECT_LOCK (pad);
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if (pad->active) {
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gint64 last_stop = pad->segment.last_stop;
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if (last_stop >= 0)
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ret = gst_segment_to_running_time (&pad->segment, GST_FORMAT_TIME,
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last_stop);
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}
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GST_OBJECT_UNLOCK (pad);
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GST_DEBUG_OBJECT (pad, "running time: %" GST_TIME_FORMAT,
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GST_TIME_ARGS (ret));
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305 |
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return ret;
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}
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static void
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gst_selector_pad_reset (GstSelectorPad * pad)
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311 |
{
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312 |
GST_OBJECT_LOCK (pad);
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pad->active = FALSE;
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pad->eos = FALSE;
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315 |
pad->segment_pending = FALSE;
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pad->discont = FALSE;
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gst_segment_init (&pad->segment, GST_FORMAT_UNDEFINED);
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318 |
GST_OBJECT_UNLOCK (pad);
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319 |
}
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320 |
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/* strictly get the linked pad from the sinkpad. If the pad is active we return
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* the srcpad else we return NULL */
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static GList *
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gst_selector_pad_get_linked_pads (GstPad * pad)
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325 |
{
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326 |
GstPad *otherpad;
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327 |
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328 |
otherpad = gst_input_selector_get_linked_pad (pad, TRUE);
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329 |
if (!otherpad)
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return NULL;
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331 |
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332 |
/* need to drop the ref, internal linked pads is not MT safe */
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333 |
gst_object_unref (otherpad);
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334 |
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return g_list_append (NULL, otherpad);
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336 |
}
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337 |
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338 |
static gboolean
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339 |
gst_selector_pad_event (GstPad * pad, GstEvent * event)
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340 |
{
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gboolean res = TRUE;
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342 |
gboolean forward = TRUE;
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343 |
GstInputSelector *sel;
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344 |
GstSelectorPad *selpad;
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345 |
GstPad *prev_active_sinkpad;
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346 |
GstPad *active_sinkpad;
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347 |
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348 |
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
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349 |
selpad = GST_SELECTOR_PAD_CAST (pad);
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350 |
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351 |
GST_INPUT_SELECTOR_LOCK (sel);
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352 |
prev_active_sinkpad = sel->active_sinkpad;
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353 |
active_sinkpad = gst_input_selector_activate_sinkpad (sel, pad);
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354 |
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355 |
/* only forward if we are dealing with the active sinkpad or if select_all
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356 |
* is enabled */
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357 |
if (pad != active_sinkpad && !sel->select_all)
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358 |
forward = FALSE;
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359 |
GST_INPUT_SELECTOR_UNLOCK (sel);
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360 |
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361 |
if (prev_active_sinkpad != active_sinkpad && pad == active_sinkpad)
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362 |
g_object_notify (G_OBJECT (sel), "active-pad");
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363 |
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364 |
switch (GST_EVENT_TYPE (event)) {
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365 |
case GST_EVENT_FLUSH_START:
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366 |
/* FIXME, flush out the waiter */
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367 |
break;
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368 |
case GST_EVENT_FLUSH_STOP:
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369 |
GST_INPUT_SELECTOR_LOCK (sel);
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370 |
gst_selector_pad_reset (selpad);
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371 |
sel->pending_close = FALSE;
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372 |
GST_INPUT_SELECTOR_UNLOCK (sel);
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373 |
break;
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374 |
case GST_EVENT_NEWSEGMENT:
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375 |
{
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376 |
gboolean update;
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377 |
GstFormat format;
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|
378 |
gdouble rate, arate;
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|
379 |
gint64 start, stop, time;
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380 |
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|
381 |
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
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382 |
&start, &stop, &time);
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383 |
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384 |
GST_DEBUG_OBJECT (pad,
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385 |
"configured NEWSEGMENT update %d, rate %lf, applied rate %lf, "
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|
386 |
"format %d, "
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|
387 |
"%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
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|
388 |
G_GINT64_FORMAT, update, rate, arate, format, start, stop, time);
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|
389 |
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|
390 |
GST_INPUT_SELECTOR_LOCK (sel);
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|
391 |
GST_OBJECT_LOCK (selpad);
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|
392 |
gst_segment_set_newsegment_full (&selpad->segment, update,
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|
393 |
rate, arate, format, start, stop, time);
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|
394 |
GST_OBJECT_UNLOCK (selpad);
|
|
395 |
|
|
396 |
/* If we aren't forwarding the event (because the pad is not the
|
|
397 |
* active_sinkpad, and select_all is not set, then set the flag on the
|
|
398 |
* that says a segment needs sending if/when that pad is activated.
|
|
399 |
* For all other cases, we send the event immediately, which makes
|
|
400 |
* sparse streams and other segment updates work correctly downstream.
|
|
401 |
*/
|
|
402 |
if (!forward)
|
|
403 |
selpad->segment_pending = TRUE;
|
|
404 |
|
|
405 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
406 |
break;
|
|
407 |
}
|
|
408 |
case GST_EVENT_TAG:
|
|
409 |
{
|
|
410 |
GstTagList *tags, *oldtags, *newtags;
|
|
411 |
|
|
412 |
gst_event_parse_tag (event, &tags);
|
|
413 |
|
|
414 |
GST_OBJECT_LOCK (selpad);
|
|
415 |
oldtags = selpad->tags;
|
|
416 |
|
|
417 |
newtags = gst_tag_list_merge (oldtags, tags, GST_TAG_MERGE_REPLACE);
|
|
418 |
selpad->tags = newtags;
|
|
419 |
if (oldtags)
|
|
420 |
gst_tag_list_free (oldtags);
|
|
421 |
GST_DEBUG_OBJECT (pad, "received tags %" GST_PTR_FORMAT, newtags);
|
|
422 |
GST_OBJECT_UNLOCK (selpad);
|
|
423 |
|
|
424 |
g_object_notify (G_OBJECT (selpad), "tags");
|
|
425 |
break;
|
|
426 |
}
|
|
427 |
case GST_EVENT_EOS:
|
|
428 |
selpad->eos = TRUE;
|
|
429 |
GST_DEBUG_OBJECT (pad, "received EOS");
|
|
430 |
/* don't forward eos in select_all mode until all sink pads have eos */
|
|
431 |
if (sel->select_all && !gst_input_selector_check_eos (GST_ELEMENT (sel))) {
|
|
432 |
forward = FALSE;
|
|
433 |
}
|
|
434 |
break;
|
|
435 |
default:
|
|
436 |
break;
|
|
437 |
}
|
|
438 |
if (forward) {
|
|
439 |
GST_DEBUG_OBJECT (pad, "forwarding event");
|
|
440 |
res = gst_pad_push_event (sel->srcpad, event);
|
|
441 |
} else
|
|
442 |
gst_event_unref (event);
|
|
443 |
|
|
444 |
gst_object_unref (sel);
|
|
445 |
|
|
446 |
return res;
|
|
447 |
}
|
|
448 |
|
|
449 |
static GstCaps *
|
|
450 |
gst_selector_pad_getcaps (GstPad * pad)
|
|
451 |
{
|
|
452 |
GstInputSelector *sel;
|
|
453 |
GstCaps *caps;
|
|
454 |
|
|
455 |
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
|
|
456 |
|
|
457 |
GST_DEBUG_OBJECT (sel, "Getting caps of srcpad peer");
|
|
458 |
caps = gst_pad_peer_get_caps (sel->srcpad);
|
|
459 |
if (caps == NULL)
|
|
460 |
caps = gst_caps_new_any ();
|
|
461 |
|
|
462 |
gst_object_unref (sel);
|
|
463 |
|
|
464 |
return caps;
|
|
465 |
}
|
|
466 |
|
|
467 |
static GstFlowReturn
|
|
468 |
gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
|
|
469 |
guint size, GstCaps * caps, GstBuffer ** buf)
|
|
470 |
{
|
|
471 |
GstInputSelector *sel;
|
|
472 |
GstFlowReturn result;
|
|
473 |
GstPad *active_sinkpad;
|
|
474 |
GstPad *prev_active_sinkpad;
|
|
475 |
GstSelectorPad *selpad;
|
|
476 |
|
|
477 |
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
|
|
478 |
selpad = GST_SELECTOR_PAD_CAST (pad);
|
|
479 |
|
|
480 |
GST_DEBUG_OBJECT (pad, "received alloc");
|
|
481 |
|
|
482 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
483 |
prev_active_sinkpad = sel->active_sinkpad;
|
|
484 |
active_sinkpad = gst_input_selector_activate_sinkpad (sel, pad);
|
|
485 |
|
|
486 |
if (pad != active_sinkpad)
|
|
487 |
goto not_active;
|
|
488 |
|
|
489 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
490 |
|
|
491 |
if (prev_active_sinkpad != active_sinkpad && pad == active_sinkpad)
|
|
492 |
g_object_notify (G_OBJECT (sel), "active-pad");
|
|
493 |
|
|
494 |
result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
|
|
495 |
|
|
496 |
done:
|
|
497 |
gst_object_unref (sel);
|
|
498 |
|
|
499 |
return result;
|
|
500 |
|
|
501 |
/* ERRORS */
|
|
502 |
not_active:
|
|
503 |
{
|
|
504 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
505 |
|
|
506 |
/* unselected pad, perform fallback alloc or return unlinked when
|
|
507 |
* asked */
|
|
508 |
GST_OBJECT_LOCK (selpad);
|
|
509 |
if (selpad->always_ok) {
|
|
510 |
GST_DEBUG_OBJECT (pad, "Not selected, performing fallback allocation");
|
|
511 |
*buf = NULL;
|
|
512 |
result = GST_FLOW_OK;
|
|
513 |
} else {
|
|
514 |
GST_DEBUG_OBJECT (pad, "Not selected, return NOT_LINKED");
|
|
515 |
result = GST_FLOW_NOT_LINKED;
|
|
516 |
}
|
|
517 |
GST_OBJECT_UNLOCK (selpad);
|
|
518 |
|
|
519 |
goto done;
|
|
520 |
}
|
|
521 |
}
|
|
522 |
|
|
523 |
/* must be called with the SELECTOR_LOCK, will block while the pad is blocked
|
|
524 |
* or return TRUE when flushing */
|
|
525 |
static gboolean
|
|
526 |
gst_input_selector_wait (GstInputSelector * self, GstPad * pad)
|
|
527 |
{
|
|
528 |
while (self->blocked && !self->flushing) {
|
|
529 |
/* we can be unlocked here when we are shutting down (flushing) or when we
|
|
530 |
* get unblocked */
|
|
531 |
GST_INPUT_SELECTOR_WAIT (self);
|
|
532 |
}
|
|
533 |
return self->flushing;
|
|
534 |
}
|
|
535 |
|
|
536 |
static GstFlowReturn
|
|
537 |
gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
|
|
538 |
{
|
|
539 |
GstInputSelector *sel;
|
|
540 |
GstFlowReturn res;
|
|
541 |
GstPad *active_sinkpad;
|
|
542 |
GstPad *prev_active_sinkpad;
|
|
543 |
GstSelectorPad *selpad;
|
|
544 |
GstClockTime end_time, duration;
|
|
545 |
GstSegment *seg;
|
|
546 |
GstEvent *close_event = NULL, *start_event = NULL;
|
|
547 |
|
|
548 |
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
|
|
549 |
selpad = GST_SELECTOR_PAD_CAST (pad);
|
|
550 |
seg = &selpad->segment;
|
|
551 |
|
|
552 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
553 |
/* wait or check for flushing */
|
|
554 |
if (gst_input_selector_wait (sel, pad))
|
|
555 |
goto flushing;
|
|
556 |
|
|
557 |
GST_DEBUG_OBJECT (pad, "getting active pad");
|
|
558 |
|
|
559 |
prev_active_sinkpad = sel->active_sinkpad;
|
|
560 |
active_sinkpad = gst_input_selector_activate_sinkpad (sel, pad);
|
|
561 |
|
|
562 |
/* update the segment on the srcpad */
|
|
563 |
end_time = GST_BUFFER_TIMESTAMP (buf);
|
|
564 |
if (GST_CLOCK_TIME_IS_VALID (end_time)) {
|
|
565 |
duration = GST_BUFFER_DURATION (buf);
|
|
566 |
if (GST_CLOCK_TIME_IS_VALID (duration))
|
|
567 |
end_time += duration;
|
|
568 |
GST_DEBUG_OBJECT (pad, "received end time %" GST_TIME_FORMAT,
|
|
569 |
GST_TIME_ARGS (end_time));
|
|
570 |
|
|
571 |
GST_OBJECT_LOCK (pad);
|
|
572 |
gst_segment_set_last_stop (seg, seg->format, end_time);
|
|
573 |
GST_OBJECT_UNLOCK (pad);
|
|
574 |
}
|
|
575 |
|
|
576 |
/* Ignore buffers from pads except the selected one */
|
|
577 |
if (pad != active_sinkpad)
|
|
578 |
goto ignore;
|
|
579 |
|
|
580 |
if (G_UNLIKELY (sel->pending_close)) {
|
|
581 |
GstSegment *cseg = &sel->segment;
|
|
582 |
|
|
583 |
GST_DEBUG_OBJECT (sel,
|
|
584 |
"pushing NEWSEGMENT update %d, rate %lf, applied rate %lf, "
|
|
585 |
"format %d, "
|
|
586 |
"%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
|
|
587 |
G_GINT64_FORMAT, TRUE, cseg->rate, cseg->applied_rate, cseg->format,
|
|
588 |
cseg->start, cseg->stop, cseg->time);
|
|
589 |
|
|
590 |
/* create update segment */
|
|
591 |
close_event = gst_event_new_new_segment_full (TRUE, cseg->rate,
|
|
592 |
cseg->applied_rate, cseg->format, cseg->start, cseg->stop, cseg->time);
|
|
593 |
|
|
594 |
sel->pending_close = FALSE;
|
|
595 |
}
|
|
596 |
/* if we have a pending segment, push it out now */
|
|
597 |
if (G_UNLIKELY (selpad->segment_pending)) {
|
|
598 |
GST_DEBUG_OBJECT (pad,
|
|
599 |
"pushing NEWSEGMENT update %d, rate %lf, applied rate %lf, "
|
|
600 |
"format %d, "
|
|
601 |
"%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
|
|
602 |
G_GINT64_FORMAT, FALSE, seg->rate, seg->applied_rate, seg->format,
|
|
603 |
seg->start, seg->stop, seg->time);
|
|
604 |
|
|
605 |
start_event = gst_event_new_new_segment_full (FALSE, seg->rate,
|
|
606 |
seg->applied_rate, seg->format, seg->start, seg->stop, seg->time);
|
|
607 |
|
|
608 |
selpad->segment_pending = FALSE;
|
|
609 |
}
|
|
610 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
611 |
|
|
612 |
if (prev_active_sinkpad != active_sinkpad && pad == active_sinkpad)
|
|
613 |
g_object_notify (G_OBJECT (sel), "active-pad");
|
|
614 |
|
|
615 |
if (close_event)
|
|
616 |
gst_pad_push_event (sel->srcpad, close_event);
|
|
617 |
|
|
618 |
if (start_event)
|
|
619 |
gst_pad_push_event (sel->srcpad, start_event);
|
|
620 |
|
|
621 |
if (selpad->discont) {
|
|
622 |
buf = gst_buffer_make_metadata_writable (buf);
|
|
623 |
|
|
624 |
GST_DEBUG_OBJECT (pad, "Marking discont buffer %p", buf);
|
|
625 |
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
|
626 |
selpad->discont = FALSE;
|
|
627 |
}
|
|
628 |
|
|
629 |
/* forward */
|
|
630 |
GST_DEBUG_OBJECT (pad, "Forwarding buffer %p from pad %s:%s", buf,
|
|
631 |
GST_DEBUG_PAD_NAME (pad));
|
|
632 |
|
|
633 |
res = gst_pad_push (sel->srcpad, buf);
|
|
634 |
|
|
635 |
done:
|
|
636 |
gst_object_unref (sel);
|
|
637 |
return res;
|
|
638 |
|
|
639 |
/* dropped buffers */
|
|
640 |
ignore:
|
|
641 |
{
|
|
642 |
GST_DEBUG_OBJECT (pad, "Pad not active, discard buffer %p", buf);
|
|
643 |
/* when we drop a buffer, we're creating a discont on this pad */
|
|
644 |
selpad->discont = TRUE;
|
|
645 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
646 |
gst_buffer_unref (buf);
|
|
647 |
|
|
648 |
/* figure out what to return upstream */
|
|
649 |
GST_OBJECT_LOCK (selpad);
|
|
650 |
if (selpad->always_ok)
|
|
651 |
res = GST_FLOW_OK;
|
|
652 |
else
|
|
653 |
res = GST_FLOW_NOT_LINKED;
|
|
654 |
GST_OBJECT_UNLOCK (selpad);
|
|
655 |
|
|
656 |
goto done;
|
|
657 |
}
|
|
658 |
flushing:
|
|
659 |
{
|
|
660 |
GST_DEBUG_OBJECT (pad, "We are flushing, discard buffer %p", buf);
|
|
661 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
662 |
gst_buffer_unref (buf);
|
|
663 |
res = GST_FLOW_WRONG_STATE;
|
|
664 |
goto done;
|
|
665 |
}
|
|
666 |
}
|
|
667 |
|
|
668 |
static void gst_input_selector_init (GstInputSelector * sel);
|
|
669 |
static void gst_input_selector_base_init (GstInputSelectorClass * klass);
|
|
670 |
static void gst_input_selector_class_init (GstInputSelectorClass * klass);
|
|
671 |
|
|
672 |
static void gst_input_selector_dispose (GObject * object);
|
|
673 |
|
|
674 |
static void gst_input_selector_set_property (GObject * object,
|
|
675 |
guint prop_id, const GValue * value, GParamSpec * pspec);
|
|
676 |
static void gst_input_selector_get_property (GObject * object,
|
|
677 |
guint prop_id, GValue * value, GParamSpec * pspec);
|
|
678 |
|
|
679 |
static GstPad *gst_input_selector_request_new_pad (GstElement * element,
|
|
680 |
GstPadTemplate * templ, const gchar * unused);
|
|
681 |
static void gst_input_selector_release_pad (GstElement * element, GstPad * pad);
|
|
682 |
|
|
683 |
static GstStateChangeReturn gst_input_selector_change_state (GstElement *
|
|
684 |
element, GstStateChange transition);
|
|
685 |
|
|
686 |
static GstCaps *gst_input_selector_getcaps (GstPad * pad);
|
|
687 |
static gboolean gst_input_selector_event (GstPad * pad, GstEvent * event);
|
|
688 |
static gboolean gst_input_selector_query (GstPad * pad, GstQuery * query);
|
|
689 |
static gint64 gst_input_selector_block (GstInputSelector * self);
|
|
690 |
static void gst_input_selector_switch (GstInputSelector * self,
|
|
691 |
GstPad * pad, gint64 stop_time, gint64 start_time);
|
|
692 |
|
|
693 |
static GstElementClass *parent_class = NULL;
|
|
694 |
|
|
695 |
GType
|
|
696 |
gst_input_selector_get_type (void)
|
|
697 |
{
|
|
698 |
static GType input_selector_type = 0;
|
|
699 |
|
|
700 |
if (!input_selector_type) {
|
|
701 |
static const GTypeInfo input_selector_info = {
|
|
702 |
sizeof (GstInputSelectorClass),
|
|
703 |
(GBaseInitFunc) gst_input_selector_base_init,
|
|
704 |
NULL,
|
|
705 |
(GClassInitFunc) gst_input_selector_class_init,
|
|
706 |
NULL,
|
|
707 |
NULL,
|
|
708 |
sizeof (GstInputSelector),
|
|
709 |
0,
|
|
710 |
(GInstanceInitFunc) gst_input_selector_init,
|
|
711 |
};
|
|
712 |
input_selector_type =
|
|
713 |
g_type_register_static (GST_TYPE_ELEMENT,
|
|
714 |
"GstPlaybin2InputSelector", &input_selector_info, 0);
|
|
715 |
GST_DEBUG_CATEGORY_INIT (input_selector_debug,
|
|
716 |
"playbin2-input-selector", 0, "Playbin2 input stream selector element");
|
|
717 |
}
|
|
718 |
|
|
719 |
return input_selector_type;
|
|
720 |
}
|
|
721 |
|
|
722 |
static void
|
|
723 |
gst_input_selector_base_init (GstInputSelectorClass * klass)
|
|
724 |
{
|
|
725 |
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
726 |
|
|
727 |
gst_element_class_set_details (element_class, &gst_input_selector_details);
|
|
728 |
gst_element_class_add_pad_template (element_class,
|
|
729 |
gst_static_pad_template_get (&gst_input_selector_sink_factory));
|
|
730 |
gst_element_class_add_pad_template (element_class,
|
|
731 |
gst_static_pad_template_get (&gst_input_selector_src_factory));
|
|
732 |
}
|
|
733 |
|
|
734 |
static void
|
|
735 |
gst_input_selector_class_init (GstInputSelectorClass * klass)
|
|
736 |
{
|
|
737 |
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
738 |
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
739 |
|
|
740 |
parent_class = g_type_class_peek_parent (klass);
|
|
741 |
|
|
742 |
gobject_class->dispose = gst_input_selector_dispose;
|
|
743 |
|
|
744 |
gobject_class->set_property =
|
|
745 |
GST_DEBUG_FUNCPTR (gst_input_selector_set_property);
|
|
746 |
gobject_class->get_property =
|
|
747 |
GST_DEBUG_FUNCPTR (gst_input_selector_get_property);
|
|
748 |
|
|
749 |
g_object_class_install_property (gobject_class, PROP_N_PADS,
|
|
750 |
g_param_spec_uint ("n-pads", "Number of Pads",
|
|
751 |
"The number of sink pads", 0, G_MAXUINT, 0, G_PARAM_READABLE));
|
|
752 |
|
|
753 |
g_object_class_install_property (gobject_class, PROP_ACTIVE_PAD,
|
|
754 |
g_param_spec_object ("active-pad", "Active pad",
|
|
755 |
"The currently active sink pad", GST_TYPE_PAD, G_PARAM_READWRITE));
|
|
756 |
|
|
757 |
g_object_class_install_property (gobject_class, PROP_SELECT_ALL,
|
|
758 |
g_param_spec_boolean ("select-all", "Select all mode",
|
|
759 |
"Forwards data from all input pads", FALSE, G_PARAM_READWRITE));
|
|
760 |
|
|
761 |
/**
|
|
762 |
* GstInputSelector::block:
|
|
763 |
* @inputselector: the #GstInputSelector
|
|
764 |
*
|
|
765 |
* Block all sink pads in preparation for a switch. Returns the stop time of
|
|
766 |
* the current switch segment, as a running time, or 0 if there is no current
|
|
767 |
* active pad or the current active pad never received data.
|
|
768 |
*/
|
|
769 |
gst_input_selector_signals[SIGNAL_BLOCK] =
|
|
770 |
g_signal_new ("block", G_TYPE_FROM_CLASS (klass),
|
|
771 |
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
|
|
772 |
G_STRUCT_OFFSET (GstInputSelectorClass, block), NULL, NULL,
|
|
773 |
gst_play_marshal_INT64__VOID, G_TYPE_INT64, 0);
|
|
774 |
/**
|
|
775 |
* GstInputSelector::switch:
|
|
776 |
* @inputselector: the #GstInputSelector
|
|
777 |
* @pad: the pad to switch to
|
|
778 |
* @stop_time: running time at which to close the previous segment, or -1
|
|
779 |
* to use the running time of the previously active sink pad
|
|
780 |
* @start_time: running time at which to start the new segment, or -1 to
|
|
781 |
* use the running time of the newly active sink pad
|
|
782 |
*
|
|
783 |
* Switch to a new feed. The segment opened by the previously active pad, if
|
|
784 |
* any, will be closed, and a new segment opened before data flows again.
|
|
785 |
*
|
|
786 |
* This signal must be emitted when the element has been blocked via the <link
|
|
787 |
* linkend="GstInputSelector-block">block</link> signal.
|
|
788 |
*
|
|
789 |
* If you have a stream with only one switch element, such as an audio-only
|
|
790 |
* stream, a stream switch should be performed by first emitting the block
|
|
791 |
* signal, and then emitting the switch signal with -1 for the stop and start
|
|
792 |
* time values.
|
|
793 |
*
|
|
794 |
* The intention of the @stop_time and @start_time arguments is to allow
|
|
795 |
* multiple switch elements to switch and maintain stream synchronization.
|
|
796 |
* When switching a stream with multiple feeds, you will need as many switch
|
|
797 |
* elements as you have feeds. For example, a feed with audio and video will
|
|
798 |
* have one switch element between the audio feeds and one for video.
|
|
799 |
*
|
|
800 |
* A switch over multiple switch elements should be performed as follows:
|
|
801 |
* First, emit the <link linkend="GstInputSelector-block">block</link>
|
|
802 |
* signal, collecting the returned values. The maximum running time returned
|
|
803 |
* by block should then be used as the time at which to close the previous
|
|
804 |
* segment.
|
|
805 |
*
|
|
806 |
* Then, query the running times of the new audio and video pads that you will
|
|
807 |
* switch to. Naturally, these pads are on separate switch elements. Take the
|
|
808 |
* minimum running time for those streams and use it for the time at which to
|
|
809 |
* open the new segment.
|
|
810 |
*
|
|
811 |
* If @pad is the same as the current active pad, the element will cancel any
|
|
812 |
* previous block without adjusting segments.
|
|
813 |
*
|
|
814 |
* <note><simpara>
|
|
815 |
* the signal changed from accepting the pad name to the pad object.
|
|
816 |
* </simpara></note>
|
|
817 |
*
|
|
818 |
* Since: 0.10.7
|
|
819 |
*/
|
|
820 |
gst_input_selector_signals[SIGNAL_SWITCH] =
|
|
821 |
g_signal_new ("switch", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
|
|
822 |
G_STRUCT_OFFSET (GstInputSelectorClass, switch_),
|
|
823 |
NULL, NULL, gst_play_marshal_VOID__OBJECT_INT64_INT64,
|
|
824 |
G_TYPE_NONE, 3, GST_TYPE_PAD, G_TYPE_INT64, G_TYPE_INT64);
|
|
825 |
|
|
826 |
gstelement_class->request_new_pad = gst_input_selector_request_new_pad;
|
|
827 |
gstelement_class->release_pad = gst_input_selector_release_pad;
|
|
828 |
gstelement_class->change_state = gst_input_selector_change_state;
|
|
829 |
|
|
830 |
klass->block = GST_DEBUG_FUNCPTR (gst_input_selector_block);
|
|
831 |
/* note the underscore because switch is a keyword otherwise */
|
|
832 |
klass->switch_ = GST_DEBUG_FUNCPTR (gst_input_selector_switch);
|
|
833 |
}
|
|
834 |
|
|
835 |
static void
|
|
836 |
gst_input_selector_init (GstInputSelector * sel)
|
|
837 |
{
|
|
838 |
sel->srcpad = gst_pad_new ("src", GST_PAD_SRC);
|
|
839 |
gst_pad_set_internal_link_function (sel->srcpad,
|
|
840 |
GST_DEBUG_FUNCPTR (gst_selector_pad_get_linked_pads));
|
|
841 |
gst_pad_set_getcaps_function (sel->srcpad,
|
|
842 |
GST_DEBUG_FUNCPTR (gst_input_selector_getcaps));
|
|
843 |
gst_pad_set_query_function (sel->srcpad,
|
|
844 |
GST_DEBUG_FUNCPTR (gst_input_selector_query));
|
|
845 |
gst_pad_set_event_function (sel->srcpad,
|
|
846 |
GST_DEBUG_FUNCPTR (gst_input_selector_event));
|
|
847 |
gst_element_add_pad (GST_ELEMENT (sel), sel->srcpad);
|
|
848 |
/* sinkpad management */
|
|
849 |
sel->active_sinkpad = NULL;
|
|
850 |
sel->padcount = 0;
|
|
851 |
gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
|
|
852 |
|
|
853 |
sel->lock = g_mutex_new ();
|
|
854 |
sel->cond = g_cond_new ();
|
|
855 |
sel->blocked = FALSE;
|
|
856 |
|
|
857 |
sel->select_all = FALSE;
|
|
858 |
}
|
|
859 |
|
|
860 |
static void
|
|
861 |
gst_input_selector_dispose (GObject * object)
|
|
862 |
{
|
|
863 |
GstInputSelector *sel = GST_INPUT_SELECTOR (object);
|
|
864 |
|
|
865 |
if (sel->active_sinkpad) {
|
|
866 |
gst_object_unref (sel->active_sinkpad);
|
|
867 |
sel->active_sinkpad = NULL;
|
|
868 |
}
|
|
869 |
if (sel->lock) {
|
|
870 |
g_mutex_free (sel->lock);
|
|
871 |
sel->lock = NULL;
|
|
872 |
}
|
|
873 |
if (sel->cond) {
|
|
874 |
g_cond_free (sel->cond);
|
|
875 |
sel->cond = NULL;
|
|
876 |
}
|
|
877 |
|
|
878 |
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
879 |
}
|
|
880 |
|
|
881 |
/* Solve the following equation for B.timestamp, and set that as the segment
|
|
882 |
* stop:
|
|
883 |
* B.running_time = (B.timestamp - NS.start) / NS.abs_rate + NS.accum
|
|
884 |
*/
|
|
885 |
static gint64
|
|
886 |
gst_segment_get_timestamp (GstSegment * segment, gint64 running_time)
|
|
887 |
{
|
|
888 |
return (running_time - segment->accum) * segment->abs_rate + segment->start;
|
|
889 |
}
|
|
890 |
|
|
891 |
static void
|
|
892 |
gst_segment_set_stop (GstSegment * segment, gint64 running_time)
|
|
893 |
{
|
|
894 |
segment->stop = gst_segment_get_timestamp (segment, running_time);
|
|
895 |
segment->last_stop = -1;
|
|
896 |
}
|
|
897 |
|
|
898 |
static void
|
|
899 |
gst_segment_set_start (GstSegment * segment, gint64 running_time)
|
|
900 |
{
|
|
901 |
gint64 new_start, duration;
|
|
902 |
|
|
903 |
new_start = gst_segment_get_timestamp (segment, running_time);
|
|
904 |
|
|
905 |
/* this is the duration we skipped */
|
|
906 |
duration = new_start - segment->start;
|
|
907 |
/* add the duration to the accumulated segment time */
|
|
908 |
segment->accum += duration;
|
|
909 |
/* move position in the segment */
|
|
910 |
segment->time += duration;
|
|
911 |
segment->start += duration;
|
|
912 |
}
|
|
913 |
|
|
914 |
/* this function must be called with the SELECTOR_LOCK. It returns TRUE when the
|
|
915 |
* active pad changed. */
|
|
916 |
static gboolean
|
|
917 |
gst_input_selector_set_active_pad (GstInputSelector * self,
|
|
918 |
GstPad * pad, gint64 stop_time, gint64 start_time)
|
|
919 |
{
|
|
920 |
GstSelectorPad *old, *new;
|
|
921 |
GstPad **active_pad_p;
|
|
922 |
|
|
923 |
if (pad == self->active_sinkpad)
|
|
924 |
return FALSE;
|
|
925 |
|
|
926 |
old = GST_SELECTOR_PAD_CAST (self->active_sinkpad);
|
|
927 |
new = GST_SELECTOR_PAD_CAST (pad);
|
|
928 |
|
|
929 |
GST_DEBUG_OBJECT (self, "setting active pad to %s:%s",
|
|
930 |
GST_DEBUG_PAD_NAME (new));
|
|
931 |
|
|
932 |
if (stop_time == -1 && old) {
|
|
933 |
/* no stop time given, get the latest running_time on the active pad to
|
|
934 |
* close and open the new segment */
|
|
935 |
stop_time = start_time = gst_selector_pad_get_running_time (old);
|
|
936 |
GST_DEBUG_OBJECT (self, "using start/stop of %" G_GINT64_FORMAT,
|
|
937 |
start_time);
|
|
938 |
}
|
|
939 |
|
|
940 |
if (old && old->active && !self->pending_close && stop_time >= 0) {
|
|
941 |
/* schedule a last_stop update if one isn't already scheduled, and a
|
|
942 |
segment has been pushed before. */
|
|
943 |
memcpy (&self->segment, &old->segment, sizeof (self->segment));
|
|
944 |
|
|
945 |
GST_DEBUG_OBJECT (self, "setting stop_time to %" G_GINT64_FORMAT,
|
|
946 |
stop_time);
|
|
947 |
gst_segment_set_stop (&self->segment, stop_time);
|
|
948 |
self->pending_close = TRUE;
|
|
949 |
}
|
|
950 |
|
|
951 |
if (new && new->active && start_time >= 0) {
|
|
952 |
GST_DEBUG_OBJECT (self, "setting start_time to %" G_GINT64_FORMAT,
|
|
953 |
start_time);
|
|
954 |
/* schedule a new segment push */
|
|
955 |
gst_segment_set_start (&new->segment, start_time);
|
|
956 |
new->segment_pending = TRUE;
|
|
957 |
}
|
|
958 |
|
|
959 |
active_pad_p = &self->active_sinkpad;
|
|
960 |
gst_object_replace ((GstObject **) active_pad_p, GST_OBJECT_CAST (pad));
|
|
961 |
GST_DEBUG_OBJECT (self, "New active pad is %" GST_PTR_FORMAT,
|
|
962 |
self->active_sinkpad);
|
|
963 |
|
|
964 |
return TRUE;
|
|
965 |
}
|
|
966 |
|
|
967 |
static void
|
|
968 |
gst_input_selector_set_property (GObject * object, guint prop_id,
|
|
969 |
const GValue * value, GParamSpec * pspec)
|
|
970 |
{
|
|
971 |
GstInputSelector *sel = GST_INPUT_SELECTOR (object);
|
|
972 |
|
|
973 |
switch (prop_id) {
|
|
974 |
case PROP_ACTIVE_PAD:
|
|
975 |
{
|
|
976 |
GstPad *pad;
|
|
977 |
|
|
978 |
pad = g_value_get_object (value);
|
|
979 |
|
|
980 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
981 |
gst_input_selector_set_active_pad (sel, pad,
|
|
982 |
GST_CLOCK_TIME_NONE, GST_CLOCK_TIME_NONE);
|
|
983 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
984 |
break;
|
|
985 |
}
|
|
986 |
case PROP_SELECT_ALL:
|
|
987 |
GST_INPUT_SELECTOR_LOCK (object);
|
|
988 |
sel->select_all = g_value_get_boolean (value);
|
|
989 |
GST_INPUT_SELECTOR_UNLOCK (object);
|
|
990 |
break;
|
|
991 |
default:
|
|
992 |
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
993 |
break;
|
|
994 |
}
|
|
995 |
}
|
|
996 |
|
|
997 |
static void
|
|
998 |
gst_input_selector_get_property (GObject * object, guint prop_id,
|
|
999 |
GValue * value, GParamSpec * pspec)
|
|
1000 |
{
|
|
1001 |
GstInputSelector *sel = GST_INPUT_SELECTOR (object);
|
|
1002 |
|
|
1003 |
switch (prop_id) {
|
|
1004 |
case PROP_N_PADS:
|
|
1005 |
GST_INPUT_SELECTOR_LOCK (object);
|
|
1006 |
g_value_set_uint (value, sel->n_pads);
|
|
1007 |
GST_INPUT_SELECTOR_UNLOCK (object);
|
|
1008 |
break;
|
|
1009 |
case PROP_ACTIVE_PAD:
|
|
1010 |
GST_INPUT_SELECTOR_LOCK (object);
|
|
1011 |
g_value_set_object (value, sel->active_sinkpad);
|
|
1012 |
GST_INPUT_SELECTOR_UNLOCK (object);
|
|
1013 |
break;
|
|
1014 |
case PROP_SELECT_ALL:
|
|
1015 |
GST_INPUT_SELECTOR_LOCK (object);
|
|
1016 |
g_value_set_boolean (value, sel->select_all);
|
|
1017 |
GST_INPUT_SELECTOR_UNLOCK (object);
|
|
1018 |
break;
|
|
1019 |
default:
|
|
1020 |
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
1021 |
break;
|
|
1022 |
}
|
|
1023 |
}
|
|
1024 |
|
|
1025 |
static GstPad *
|
|
1026 |
gst_input_selector_get_linked_pad (GstPad * pad, gboolean strict)
|
|
1027 |
{
|
|
1028 |
GstInputSelector *sel;
|
|
1029 |
GstPad *otherpad = NULL;
|
|
1030 |
|
|
1031 |
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
|
|
1032 |
|
|
1033 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
1034 |
if (pad == sel->srcpad)
|
|
1035 |
otherpad = sel->active_sinkpad;
|
|
1036 |
else if (pad == sel->active_sinkpad || !strict)
|
|
1037 |
otherpad = sel->srcpad;
|
|
1038 |
if (otherpad)
|
|
1039 |
gst_object_ref (otherpad);
|
|
1040 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
1041 |
|
|
1042 |
gst_object_unref (sel);
|
|
1043 |
|
|
1044 |
return otherpad;
|
|
1045 |
}
|
|
1046 |
|
|
1047 |
static gboolean
|
|
1048 |
gst_input_selector_event (GstPad * pad, GstEvent * event)
|
|
1049 |
{
|
|
1050 |
gboolean res = FALSE;
|
|
1051 |
GstPad *otherpad;
|
|
1052 |
|
|
1053 |
otherpad = gst_input_selector_get_linked_pad (pad, TRUE);
|
|
1054 |
|
|
1055 |
if (otherpad) {
|
|
1056 |
res = gst_pad_push_event (otherpad, event);
|
|
1057 |
|
|
1058 |
gst_object_unref (otherpad);
|
|
1059 |
} else
|
|
1060 |
gst_event_unref (event);
|
|
1061 |
return res;
|
|
1062 |
}
|
|
1063 |
|
|
1064 |
/* query on the srcpad. We override this function because by default it will
|
|
1065 |
* only forward the query to one random sinkpad */
|
|
1066 |
static gboolean
|
|
1067 |
gst_input_selector_query (GstPad * pad, GstQuery * query)
|
|
1068 |
{
|
|
1069 |
gboolean res = TRUE;
|
|
1070 |
GstInputSelector *sel;
|
|
1071 |
GstPad *otherpad;
|
|
1072 |
|
|
1073 |
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
|
|
1074 |
|
|
1075 |
otherpad = gst_input_selector_get_linked_pad (pad, TRUE);
|
|
1076 |
|
|
1077 |
switch (GST_QUERY_TYPE (query)) {
|
|
1078 |
case GST_QUERY_LATENCY:
|
|
1079 |
{
|
|
1080 |
GList *walk;
|
|
1081 |
GstClockTime resmin, resmax;
|
|
1082 |
gboolean reslive;
|
|
1083 |
|
|
1084 |
resmin = 0;
|
|
1085 |
resmax = -1;
|
|
1086 |
reslive = FALSE;
|
|
1087 |
|
|
1088 |
/* assume FALSE, we become TRUE if one query succeeds */
|
|
1089 |
res = FALSE;
|
|
1090 |
|
|
1091 |
/* perform the query on all sinkpads and combine the results. We take the
|
|
1092 |
* max of min and the min of max for the result latency. */
|
|
1093 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
1094 |
for (walk = GST_ELEMENT_CAST (sel)->sinkpads; walk;
|
|
1095 |
walk = g_list_next (walk)) {
|
|
1096 |
GstPad *sinkpad = GST_PAD_CAST (walk->data);
|
|
1097 |
|
|
1098 |
if (gst_pad_peer_query (sinkpad, query)) {
|
|
1099 |
GstClockTime min, max;
|
|
1100 |
gboolean live;
|
|
1101 |
|
|
1102 |
/* one query succeeded, we succeed too */
|
|
1103 |
res = TRUE;
|
|
1104 |
|
|
1105 |
gst_query_parse_latency (query, &live, &min, &max);
|
|
1106 |
|
|
1107 |
GST_DEBUG_OBJECT (sinkpad,
|
|
1108 |
"peer latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT
|
|
1109 |
", live %d", GST_TIME_ARGS (min), GST_TIME_ARGS (max), live);
|
|
1110 |
|
|
1111 |
if (live) {
|
|
1112 |
if (min > resmin)
|
|
1113 |
resmin = min;
|
|
1114 |
if (resmax == -1)
|
|
1115 |
resmax = max;
|
|
1116 |
else if (max < resmax)
|
|
1117 |
resmax = max;
|
|
1118 |
if (reslive == FALSE)
|
|
1119 |
reslive = live;
|
|
1120 |
}
|
|
1121 |
}
|
|
1122 |
}
|
|
1123 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
1124 |
if (res) {
|
|
1125 |
gst_query_set_latency (query, reslive, resmin, resmax);
|
|
1126 |
|
|
1127 |
GST_DEBUG_OBJECT (sel,
|
|
1128 |
"total latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT
|
|
1129 |
", live %d", GST_TIME_ARGS (resmin), GST_TIME_ARGS (resmax),
|
|
1130 |
reslive);
|
|
1131 |
}
|
|
1132 |
|
|
1133 |
break;
|
|
1134 |
}
|
|
1135 |
default:
|
|
1136 |
if (otherpad)
|
|
1137 |
res = gst_pad_peer_query (otherpad, query);
|
|
1138 |
break;
|
|
1139 |
}
|
|
1140 |
if (otherpad)
|
|
1141 |
gst_object_unref (otherpad);
|
|
1142 |
gst_object_unref (sel);
|
|
1143 |
|
|
1144 |
return res;
|
|
1145 |
}
|
|
1146 |
|
|
1147 |
static GstCaps *
|
|
1148 |
gst_input_selector_getcaps (GstPad * pad)
|
|
1149 |
{
|
|
1150 |
GstPad *otherpad;
|
|
1151 |
GstObject *parent;
|
|
1152 |
GstCaps *caps;
|
|
1153 |
|
|
1154 |
parent = gst_object_get_parent (GST_OBJECT (pad));
|
|
1155 |
|
|
1156 |
otherpad = gst_input_selector_get_linked_pad (pad, FALSE);
|
|
1157 |
|
|
1158 |
if (!otherpad) {
|
|
1159 |
if (GST_INPUT_SELECTOR (parent)->select_all) {
|
|
1160 |
GST_DEBUG_OBJECT (parent,
|
|
1161 |
"Pad %s:%s not linked, returning merge of caps",
|
|
1162 |
GST_DEBUG_PAD_NAME (pad));
|
|
1163 |
caps = gst_pad_proxy_getcaps (pad);
|
|
1164 |
} else {
|
|
1165 |
GST_DEBUG_OBJECT (parent,
|
|
1166 |
"Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
|
|
1167 |
caps = gst_caps_new_any ();
|
|
1168 |
}
|
|
1169 |
} else {
|
|
1170 |
GST_DEBUG_OBJECT (parent,
|
|
1171 |
"Pad %s:%s is linked (to %s:%s), returning peer caps",
|
|
1172 |
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
|
|
1173 |
/* if the peer has caps, use those. If the pad is not linked, this function
|
|
1174 |
* returns NULL and we return ANY */
|
|
1175 |
if (!(caps = gst_pad_peer_get_caps (otherpad)))
|
|
1176 |
caps = gst_caps_new_any ();
|
|
1177 |
gst_object_unref (otherpad);
|
|
1178 |
}
|
|
1179 |
|
|
1180 |
gst_object_unref (parent);
|
|
1181 |
return caps;
|
|
1182 |
}
|
|
1183 |
|
|
1184 |
/* check if the pad is the active sinkpad */
|
|
1185 |
static gboolean
|
|
1186 |
gst_input_selector_is_active_sinkpad (GstInputSelector * sel, GstPad * pad)
|
|
1187 |
{
|
|
1188 |
GstSelectorPad *selpad;
|
|
1189 |
gboolean res;
|
|
1190 |
|
|
1191 |
selpad = GST_SELECTOR_PAD_CAST (pad);
|
|
1192 |
|
|
1193 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
1194 |
res = (pad == sel->active_sinkpad);
|
|
1195 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
1196 |
|
|
1197 |
return res;
|
|
1198 |
}
|
|
1199 |
|
|
1200 |
/* Get or create the active sinkpad, must be called with SELECTOR_LOCK */
|
|
1201 |
static GstPad *
|
|
1202 |
gst_input_selector_activate_sinkpad (GstInputSelector * sel, GstPad * pad)
|
|
1203 |
{
|
|
1204 |
GstPad *active_sinkpad;
|
|
1205 |
GstSelectorPad *selpad;
|
|
1206 |
|
|
1207 |
selpad = GST_SELECTOR_PAD_CAST (pad);
|
|
1208 |
|
|
1209 |
selpad->active = TRUE;
|
|
1210 |
active_sinkpad = sel->active_sinkpad;
|
|
1211 |
if (active_sinkpad == NULL || sel->select_all) {
|
|
1212 |
/* first pad we get activity on becomes the activated pad by default, if we
|
|
1213 |
* select all, we also remember the last used pad. */
|
|
1214 |
if (sel->active_sinkpad)
|
|
1215 |
gst_object_unref (sel->active_sinkpad);
|
|
1216 |
active_sinkpad = sel->active_sinkpad = gst_object_ref (pad);
|
|
1217 |
GST_DEBUG_OBJECT (sel, "Activating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
1218 |
}
|
|
1219 |
|
|
1220 |
return active_sinkpad;
|
|
1221 |
}
|
|
1222 |
|
|
1223 |
static GstPad *
|
|
1224 |
gst_input_selector_request_new_pad (GstElement * element,
|
|
1225 |
GstPadTemplate * templ, const gchar * unused)
|
|
1226 |
{
|
|
1227 |
GstInputSelector *sel;
|
|
1228 |
gchar *name = NULL;
|
|
1229 |
GstPad *sinkpad = NULL;
|
|
1230 |
|
|
1231 |
g_return_val_if_fail (templ->direction == GST_PAD_SINK, NULL);
|
|
1232 |
|
|
1233 |
sel = GST_INPUT_SELECTOR (element);
|
|
1234 |
|
|
1235 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
1236 |
|
|
1237 |
GST_LOG_OBJECT (sel, "Creating new pad %d", sel->padcount);
|
|
1238 |
name = g_strdup_printf ("sink%d", sel->padcount++);
|
|
1239 |
sinkpad = g_object_new (GST_TYPE_SELECTOR_PAD,
|
|
1240 |
"name", name, "direction", templ->direction, "template", templ, NULL);
|
|
1241 |
g_free (name);
|
|
1242 |
|
|
1243 |
sel->n_pads++;
|
|
1244 |
|
|
1245 |
gst_pad_set_event_function (sinkpad,
|
|
1246 |
GST_DEBUG_FUNCPTR (gst_selector_pad_event));
|
|
1247 |
gst_pad_set_getcaps_function (sinkpad,
|
|
1248 |
GST_DEBUG_FUNCPTR (gst_selector_pad_getcaps));
|
|
1249 |
gst_pad_set_chain_function (sinkpad,
|
|
1250 |
GST_DEBUG_FUNCPTR (gst_selector_pad_chain));
|
|
1251 |
gst_pad_set_internal_link_function (sinkpad,
|
|
1252 |
GST_DEBUG_FUNCPTR (gst_selector_pad_get_linked_pads));
|
|
1253 |
gst_pad_set_bufferalloc_function (sinkpad,
|
|
1254 |
GST_DEBUG_FUNCPTR (gst_selector_pad_bufferalloc));
|
|
1255 |
|
|
1256 |
gst_pad_set_active (sinkpad, TRUE);
|
|
1257 |
gst_element_add_pad (GST_ELEMENT (sel), sinkpad);
|
|
1258 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
1259 |
|
|
1260 |
return sinkpad;
|
|
1261 |
}
|
|
1262 |
|
|
1263 |
static void
|
|
1264 |
gst_input_selector_release_pad (GstElement * element, GstPad * pad)
|
|
1265 |
{
|
|
1266 |
GstInputSelector *sel;
|
|
1267 |
|
|
1268 |
sel = GST_INPUT_SELECTOR (element);
|
|
1269 |
GST_LOG_OBJECT (sel, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
1270 |
|
|
1271 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
1272 |
/* if the pad was the active pad, makes us select a new one */
|
|
1273 |
if (sel->active_sinkpad == pad) {
|
|
1274 |
GST_DEBUG_OBJECT (sel, "Deactivating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
1275 |
gst_object_unref (sel->active_sinkpad);
|
|
1276 |
sel->active_sinkpad = NULL;
|
|
1277 |
}
|
|
1278 |
sel->n_pads--;
|
|
1279 |
|
|
1280 |
gst_pad_set_active (pad, FALSE);
|
|
1281 |
gst_element_remove_pad (GST_ELEMENT (sel), pad);
|
|
1282 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
1283 |
}
|
|
1284 |
|
|
1285 |
static void
|
|
1286 |
gst_input_selector_reset (GstInputSelector * sel)
|
|
1287 |
{
|
|
1288 |
GList *walk;
|
|
1289 |
|
|
1290 |
GST_INPUT_SELECTOR_LOCK (sel);
|
|
1291 |
/* clear active pad */
|
|
1292 |
if (sel->active_sinkpad) {
|
|
1293 |
gst_object_unref (sel->active_sinkpad);
|
|
1294 |
sel->active_sinkpad = NULL;
|
|
1295 |
}
|
|
1296 |
/* reset segment */
|
|
1297 |
gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
|
|
1298 |
sel->pending_close = FALSE;
|
|
1299 |
/* reset each of our sinkpads state */
|
|
1300 |
for (walk = GST_ELEMENT_CAST (sel)->sinkpads; walk; walk = g_list_next (walk)) {
|
|
1301 |
GstSelectorPad *selpad = GST_SELECTOR_PAD_CAST (walk->data);
|
|
1302 |
|
|
1303 |
gst_selector_pad_reset (selpad);
|
|
1304 |
|
|
1305 |
if (selpad->tags) {
|
|
1306 |
gst_tag_list_free (selpad->tags);
|
|
1307 |
selpad->tags = NULL;
|
|
1308 |
}
|
|
1309 |
}
|
|
1310 |
GST_INPUT_SELECTOR_UNLOCK (sel);
|
|
1311 |
}
|
|
1312 |
|
|
1313 |
static GstStateChangeReturn
|
|
1314 |
gst_input_selector_change_state (GstElement * element,
|
|
1315 |
GstStateChange transition)
|
|
1316 |
{
|
|
1317 |
GstInputSelector *self = GST_INPUT_SELECTOR (element);
|
|
1318 |
GstStateChangeReturn result;
|
|
1319 |
|
|
1320 |
switch (transition) {
|
|
1321 |
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
1322 |
GST_INPUT_SELECTOR_LOCK (self);
|
|
1323 |
self->blocked = FALSE;
|
|
1324 |
self->flushing = FALSE;
|
|
1325 |
GST_INPUT_SELECTOR_UNLOCK (self);
|
|
1326 |
break;
|
|
1327 |
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
1328 |
/* first unlock before we call the parent state change function, which
|
|
1329 |
* tries to acquire the stream lock when going to ready. */
|
|
1330 |
GST_INPUT_SELECTOR_LOCK (self);
|
|
1331 |
self->blocked = FALSE;
|
|
1332 |
self->flushing = TRUE;
|
|
1333 |
GST_INPUT_SELECTOR_BROADCAST (self);
|
|
1334 |
GST_INPUT_SELECTOR_UNLOCK (self);
|
|
1335 |
break;
|
|
1336 |
default:
|
|
1337 |
break;
|
|
1338 |
}
|
|
1339 |
|
|
1340 |
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
1341 |
|
|
1342 |
switch (transition) {
|
|
1343 |
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
1344 |
gst_input_selector_reset (self);
|
|
1345 |
break;
|
|
1346 |
default:
|
|
1347 |
break;
|
|
1348 |
}
|
|
1349 |
|
|
1350 |
return result;
|
|
1351 |
}
|
|
1352 |
|
|
1353 |
static gint64
|
|
1354 |
gst_input_selector_block (GstInputSelector * self)
|
|
1355 |
{
|
|
1356 |
gint64 ret = 0;
|
|
1357 |
GstSelectorPad *spad;
|
|
1358 |
|
|
1359 |
GST_INPUT_SELECTOR_LOCK (self);
|
|
1360 |
|
|
1361 |
if (self->blocked)
|
|
1362 |
GST_WARNING_OBJECT (self, "switch already blocked");
|
|
1363 |
|
|
1364 |
self->blocked = TRUE;
|
|
1365 |
spad = GST_SELECTOR_PAD_CAST (self->active_sinkpad);
|
|
1366 |
|
|
1367 |
if (spad)
|
|
1368 |
ret = gst_selector_pad_get_running_time (spad);
|
|
1369 |
else
|
|
1370 |
GST_DEBUG_OBJECT (self, "no active pad while blocking");
|
|
1371 |
|
|
1372 |
GST_INPUT_SELECTOR_UNLOCK (self);
|
|
1373 |
|
|
1374 |
return ret;
|
|
1375 |
}
|
|
1376 |
|
|
1377 |
/* stop_time and start_time are running times */
|
|
1378 |
static void
|
|
1379 |
gst_input_selector_switch (GstInputSelector * self, GstPad * pad,
|
|
1380 |
gint64 stop_time, gint64 start_time)
|
|
1381 |
{
|
|
1382 |
gboolean changed;
|
|
1383 |
|
|
1384 |
g_return_if_fail (self->blocked == TRUE);
|
|
1385 |
|
|
1386 |
GST_INPUT_SELECTOR_LOCK (self);
|
|
1387 |
changed =
|
|
1388 |
gst_input_selector_set_active_pad (self, pad, stop_time, start_time);
|
|
1389 |
|
|
1390 |
self->blocked = FALSE;
|
|
1391 |
GST_INPUT_SELECTOR_BROADCAST (self);
|
|
1392 |
GST_INPUT_SELECTOR_UNLOCK (self);
|
|
1393 |
|
|
1394 |
if (changed)
|
|
1395 |
g_object_notify (G_OBJECT (self), "active-pad");
|
|
1396 |
}
|
|
1397 |
|
|
1398 |
static gboolean
|
|
1399 |
gst_input_selector_check_eos (GstElement * selector)
|
|
1400 |
{
|
|
1401 |
GstIterator *it = gst_element_iterate_sink_pads (selector);
|
|
1402 |
GstIteratorResult ires;
|
|
1403 |
gpointer item;
|
|
1404 |
gboolean done = FALSE, is_eos = FALSE;
|
|
1405 |
GstSelectorPad *pad;
|
|
1406 |
|
|
1407 |
while (!done) {
|
|
1408 |
ires = gst_iterator_next (it, &item);
|
|
1409 |
switch (ires) {
|
|
1410 |
case GST_ITERATOR_DONE:
|
|
1411 |
GST_INFO_OBJECT (selector, "all sink pads have eos");
|
|
1412 |
done = TRUE;
|
|
1413 |
is_eos = TRUE;
|
|
1414 |
break;
|
|
1415 |
case GST_ITERATOR_OK:
|
|
1416 |
pad = GST_SELECTOR_PAD_CAST (item);
|
|
1417 |
if (!pad->eos) {
|
|
1418 |
done = TRUE;
|
|
1419 |
}
|
|
1420 |
gst_object_unref (pad);
|
|
1421 |
break;
|
|
1422 |
case GST_ITERATOR_RESYNC:
|
|
1423 |
gst_iterator_resync (it);
|
|
1424 |
break;
|
|
1425 |
default:
|
|
1426 |
done = TRUE;
|
|
1427 |
break;
|
|
1428 |
}
|
|
1429 |
}
|
|
1430 |
gst_iterator_free (it);
|
|
1431 |
|
|
1432 |
return is_eos;
|
|
1433 |
}
|