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playsink: Fix gapless playback in many non-simple scenarios

Browse source 
Before gapless playback failed when switching between audio-only,
video-only and audio-video files, when choosing different clocks
and when the different streams had different durations.

This is now handled by a helper element, which keeps track of the
running times of all streams and synchronizes them.

Fixes bug #602437.
This commit is contained in:
Sebastian Dröge 2010-07-11 14:44:10 +02:00
parent f835533cb4
commit 405b47a79a
5 changed files with 1074 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
gst/playback/Makefile.am
View file

@ -22,7 +22,8 @@ libgstplaybin_la_SOURCES = \
gstscreenshot.c \
gststreaminfo.c \
gststreamselector.c \
gstsubtitleoverlay.c
gstsubtitleoverlay.c \
gststreamsynchronizer.c
nodist_libgstplaybin_la_SOURCES = $(built_sources)
libgstplaybin_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
@ -63,7 +64,8 @@ noinst_HEADERS = \
gstscreenshot.h \
gststreamselector.h \
gstrawcaps.h \
gstsubtitleoverlay.h
gstsubtitleoverlay.h \
gststreamsynchronizer.h
noinst_PROGRAMS = test decodetest test2 test3 test4 test5 test6 test7

213
gst/playback/gstplaysink.c
View file

@ -29,6 +29,7 @@
#include "gstplaysink.h"
#include "gstscreenshot.h"
#include "gststreamsynchronizer.h"
GST_DEBUG_CATEGORY_STATIC (gst_play_sink_debug);
#define GST_CAT_DEFAULT gst_play_sink_debug
@ -136,6 +137,8 @@ struct _GstPlaySink
GstPlayFlags flags;
GstStreamSynchronizer *stream_synchronizer;
/* chains */
GstPlayAudioChain *audiochain;
GstPlayVideoDeinterlaceChain *videodeinterlacechain;
@ -146,6 +149,8 @@ struct _GstPlaySink
/* audio */
GstPad *audio_pad;
gboolean audio_pad_raw;
GstPad *audio_srcpad_stream_synchronizer;
GstPad *audio_sinkpad_stream_synchronizer;
/* audio tee */
GstElement *audio_tee;
GstPad *audio_tee_sink;
@ -154,8 +159,12 @@ struct _GstPlaySink
/* video */
GstPad *video_pad;
gboolean video_pad_raw;
GstPad *video_srcpad_stream_synchronizer;
GstPad *video_sinkpad_stream_synchronizer;
/* text */
GstPad *text_pad;
GstPad *text_srcpad_stream_synchronizer;
GstPad *text_sinkpad_stream_synchronizer;
/* properties */
GstElement *audio_sink;
@ -412,6 +421,11 @@ gst_play_sink_init (GstPlaySink * playsink)
playsink->subtitle_encoding = NULL;
playsink->flags = DEFAULT_FLAGS;
playsink->stream_synchronizer =
g_object_new (GST_TYPE_STREAM_SYNCHRONIZER, NULL);
gst_bin_add (GST_BIN_CAST (playsink),
GST_ELEMENT_CAST (playsink->stream_synchronizer));
g_static_rec_mutex_init (&playsink->lock);
GST_OBJECT_FLAG_SET (playsink, GST_ELEMENT_IS_SINK);
}
@ -503,6 +517,8 @@ gst_play_sink_dispose (GObject * object)
g_free (playsink->subtitle_encoding);
playsink->subtitle_encoding = NULL;
playsink->stream_synchronizer = NULL;
G_OBJECT_CLASS (gst_play_sink_parent_class)->dispose (object);
}
@ -2104,7 +2120,49 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
GST_DEBUG_OBJECT (playsink, "adding video, raw %d",
playsink->video_pad_raw);
if (need_deinterlace) {
if (playsink->videochain) {
/* try to reactivate the chain */
if (!setup_video_chain (playsink, raw, async, queue)) {
if (playsink->video_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->video_sinkpad_stream_synchronizer);
gst_object_unref (playsink->video_sinkpad_stream_synchronizer);
playsink->video_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->video_srcpad_stream_synchronizer);
playsink->video_srcpad_stream_synchronizer = NULL;
}
add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
free_chain ((GstPlayChain *) playsink->videochain);
playsink->videochain = NULL;
}
}
if (!playsink->videochain)
playsink->videochain = gen_video_chain (playsink, raw, async, queue);
if (!playsink->video_sinkpad_stream_synchronizer) {
GstIterator *it;
playsink->video_sinkpad_stream_synchronizer =
gst_element_get_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer), "sink_%d");
it = gst_pad_iterate_internal_links
(playsink->video_sinkpad_stream_synchronizer);
g_assert (it);
gst_iterator_next (it,
(gpointer *) & playsink->video_srcpad_stream_synchronizer);
g_assert (playsink->video_srcpad_stream_synchronizer);
gst_iterator_free (it);
}
if (playsink->video_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
playsink->video_sinkpad_stream_synchronizer);
if (playsink->videochain && need_deinterlace) {
if (!playsink->videodeinterlacechain)
playsink->videodeinterlacechain =
gen_video_deinterlace_chain (playsink);
@ -2116,25 +2174,18 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
add_chain (GST_PLAY_CHAIN (playsink->videodeinterlacechain), TRUE);
activate_chain (GST_PLAY_CHAIN (playsink->videodeinterlacechain), TRUE);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
gst_pad_link (playsink->video_srcpad_stream_synchronizer,
playsink->videodeinterlacechain->sinkpad);
}
}
if (playsink->videochain) {
/* try to reactivate the chain */
if (!setup_video_chain (playsink, raw, async, queue)) {
add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
free_chain ((GstPlayChain *) playsink->videochain);
playsink->videochain = NULL;
} else {
if (playsink->videodeinterlacechain) {
add_chain (GST_PLAY_CHAIN (playsink->videodeinterlacechain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->videodeinterlacechain),
FALSE);
}
}
if (!playsink->videochain) {
playsink->videochain = gen_video_chain (playsink, raw, async, queue);
}
if (playsink->videochain) {
GST_DEBUG_OBJECT (playsink, "adding video chain");
add_chain (GST_PLAY_CHAIN (playsink->videochain), TRUE);
@ -2147,7 +2198,7 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
gst_pad_link (playsink->videodeinterlacechain->srcpad,
playsink->videochain->sinkpad);
else
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
gst_pad_link (playsink->video_srcpad_stream_synchronizer,
playsink->videochain->sinkpad);
}
}
@ -2172,6 +2223,17 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
gst_element_get_static_pad (playsink->vischain->chain.bin, "src");
gst_pad_unlink (srcpad, playsink->videochain->sinkpad);
}
if (playsink->video_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->video_sinkpad_stream_synchronizer);
gst_object_unref (playsink->video_sinkpad_stream_synchronizer);
playsink->video_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->video_srcpad_stream_synchronizer);
playsink->video_srcpad_stream_synchronizer = NULL;
}
add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
playsink->videochain->ts_offset = NULL;
@ -2215,6 +2277,17 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
gst_object_unref (playsink->audio_tee_asrc);
playsink->audio_tee_asrc = NULL;
}
if (playsink->audio_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->audio_sinkpad_stream_synchronizer);
gst_object_unref (playsink->audio_sinkpad_stream_synchronizer);
playsink->audio_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->audio_srcpad_stream_synchronizer);
playsink->audio_srcpad_stream_synchronizer = NULL;
}
add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
disconnect_chain (playsink->audiochain, playsink);
@ -2232,6 +2305,21 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
playsink->audiochain = gen_audio_chain (playsink, raw, queue);
}
if (!playsink->audio_sinkpad_stream_synchronizer) {
GstIterator *it;
playsink->audio_sinkpad_stream_synchronizer =
gst_element_get_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer), "sink_%d");
it = gst_pad_iterate_internal_links
(playsink->audio_sinkpad_stream_synchronizer);
g_assert (it);
gst_iterator_next (it,
(gpointer *) & playsink->audio_srcpad_stream_synchronizer);
g_assert (playsink->audio_srcpad_stream_synchronizer);
gst_iterator_free (it);
}
if (playsink->audiochain) {
GST_DEBUG_OBJECT (playsink, "adding audio chain");
if (playsink->audio_tee_asrc == NULL) {
@ -2240,7 +2328,10 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
}
add_chain (GST_PLAY_CHAIN (playsink->audiochain), TRUE);
activate_chain (GST_PLAY_CHAIN (playsink->audiochain), TRUE);
gst_pad_link (playsink->audio_tee_asrc, playsink->audiochain->sinkpad);
gst_pad_link (playsink->audio_tee_asrc,
playsink->audio_sinkpad_stream_synchronizer);
gst_pad_link (playsink->audio_srcpad_stream_synchronizer,
playsink->audiochain->sinkpad);
}
} else {
GST_DEBUG_OBJECT (playsink, "no audio needed");
@ -2254,6 +2345,17 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
gst_object_unref (playsink->audio_tee_asrc);
playsink->audio_tee_asrc = NULL;
}
if (playsink->audio_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->audio_sinkpad_stream_synchronizer);
gst_object_unref (playsink->audio_sinkpad_stream_synchronizer);
playsink->audio_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->audio_srcpad_stream_synchronizer);
playsink->audio_srcpad_stream_synchronizer = NULL;
}
if (playsink->audiochain->sink_volume) {
disconnect_chain (playsink->audiochain, playsink);
playsink->audiochain->volume = NULL;
@ -2284,7 +2386,9 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
gst_element_get_request_pad (playsink->audio_tee, "src%d");
}
gst_pad_link (playsink->audio_tee_vissrc, playsink->vischain->sinkpad);
gst_pad_link (srcpad, playsink->videochain->sinkpad);
gst_pad_link (srcpad, playsink->video_sinkpad_stream_synchronizer);
gst_pad_link (playsink->video_srcpad_stream_synchronizer,
playsink->videochain->sinkpad);
gst_object_unref (srcpad);
}
} else {
@ -2309,13 +2413,28 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
playsink->textchain = gen_text_chain (playsink);
}
if (playsink->textchain) {
GstIterator *it;
GST_DEBUG_OBJECT (playsink, "adding text chain");
if (playsink->textchain->overlay)
g_object_set (G_OBJECT (playsink->textchain->overlay), "silent", FALSE,
NULL);
add_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE);
playsink->text_sinkpad_stream_synchronizer =
gst_element_get_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer), "sink_%d");
it = gst_pad_iterate_internal_links
(playsink->text_sinkpad_stream_synchronizer);
g_assert (it);
gst_iterator_next (it,
(gpointer *) & playsink->text_srcpad_stream_synchronizer);
g_assert (playsink->text_srcpad_stream_synchronizer);
gst_iterator_free (it);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad),
playsink->text_sinkpad_stream_synchronizer);
gst_pad_link (playsink->text_srcpad_stream_synchronizer,
playsink->textchain->textsinkpad);
if (need_vis) {
@ -2331,7 +2450,7 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
gst_pad_link (playsink->videodeinterlacechain->srcpad,
playsink->textchain->videosinkpad);
else
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
gst_pad_link (playsink->video_srcpad_stream_synchronizer,
playsink->textchain->videosinkpad);
}
gst_pad_link (playsink->textchain->srcpad, playsink->videochain->sinkpad);
@ -2341,6 +2460,17 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
} else {
GST_DEBUG_OBJECT (playsink, "no text needed");
/* we have no subtitles/text or we are requested to not show them */
if (playsink->text_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->text_sinkpad_stream_synchronizer);
gst_object_unref (playsink->text_sinkpad_stream_synchronizer);
playsink->text_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->text_srcpad_stream_synchronizer);
playsink->text_srcpad_stream_synchronizer = NULL;
}
if (playsink->textchain) {
if (playsink->text_pad == NULL) {
/* no text pad, remove the chain entirely */
@ -2355,8 +2485,20 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
NULL);
}
}
if (!need_video && playsink->video_pad)
if (!need_video && playsink->video_pad) {
if (playsink->video_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->video_sinkpad_stream_synchronizer);
gst_object_unref (playsink->video_sinkpad_stream_synchronizer);
playsink->video_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->video_srcpad_stream_synchronizer);
playsink->video_srcpad_stream_synchronizer = NULL;
}
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), NULL);
}
if (playsink->text_pad && !playsink->textchain)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad), NULL);
}
@ -2936,7 +3078,36 @@ gst_play_sink_change_state (GstElement * element, GstStateChange transition)
do_async_start (playsink);
ret = GST_STATE_CHANGE_ASYNC;
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
case GST_STATE_CHANGE_PAUSED_TO_READY:{
if (playsink->video_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->video_sinkpad_stream_synchronizer);
gst_object_unref (playsink->video_sinkpad_stream_synchronizer);
playsink->video_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->video_srcpad_stream_synchronizer);
playsink->video_srcpad_stream_synchronizer = NULL;
}
if (playsink->audio_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->audio_sinkpad_stream_synchronizer);
gst_object_unref (playsink->audio_sinkpad_stream_synchronizer);
playsink->audio_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->audio_srcpad_stream_synchronizer);
playsink->audio_srcpad_stream_synchronizer = NULL;
}
if (playsink->text_sinkpad_stream_synchronizer) {
gst_element_release_request_pad (GST_ELEMENT_CAST
(playsink->stream_synchronizer),
playsink->text_sinkpad_stream_synchronizer);
gst_object_unref (playsink->text_sinkpad_stream_synchronizer);
playsink->text_sinkpad_stream_synchronizer = NULL;
gst_object_unref (playsink->text_srcpad_stream_synchronizer);
playsink->text_srcpad_stream_synchronizer = NULL;
}
}
/* fall through */
case GST_STATE_CHANGE_READY_TO_NULL:
if (playsink->audiochain && playsink->audiochain->sink_volume) {
/* remove our links to the mute and volume elements when they were

788
gst/playback/gststreamsynchronizer.c Normal file
View file

@ -0,0 +1,788 @@
/* GStreamer
* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gststreamsynchronizer.h"
GST_DEBUG_CATEGORY_STATIC (stream_synchronizer_debug);
#define GST_CAT_DEFAULT stream_synchronizer_debug
#define GST_STREAM_SYNCHRONIZER_LOCK(obj) G_STMT_START { \
GST_LOG_OBJECT (obj, \
"locking from thread %p", \
g_thread_self ()); \
g_mutex_lock (GST_STREAM_SYNCHRONIZER_CAST(obj)->lock); \
GST_LOG_OBJECT (obj, \
"locked from thread %p", \
g_thread_self ()); \
} G_STMT_END
#define GST_STREAM_SYNCHRONIZER_UNLOCK(obj) G_STMT_START { \
GST_LOG_OBJECT (obj, \
"unlocking from thread %p", \
g_thread_self ()); \
g_mutex_unlock (GST_STREAM_SYNCHRONIZER_CAST(obj)->lock); \
} G_STMT_END
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src_%d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink_%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
GST_BOILERPLATE (GstStreamSynchronizer, gst_stream_synchronizer,
GstElement, GST_TYPE_ELEMENT);
typedef struct
{
GstStreamSynchronizer *transform;
guint stream_number;
GstPad *srcpad;
GstPad *sinkpad;
GstSegment segment;
gboolean wait;
gboolean new_stream;
gint64 running_time_diff;
} GstStream;
/* Must be called with lock! */
static GstPad *
gst_stream_get_other_pad (GstStream * stream, GstPad * pad)
{
if (stream->sinkpad == pad)
return gst_object_ref (stream->srcpad);
else if (stream->srcpad == pad)
return gst_object_ref (stream->sinkpad);
return NULL;
}
static GstPad *
gst_stream_get_other_pad_from_pad (GstPad * pad)
{
GstStreamSynchronizer *self =
GST_STREAM_SYNCHRONIZER (gst_pad_get_parent (pad));
GstStream *stream;
GstPad *opad = NULL;
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (!stream)
goto out;
opad = gst_stream_get_other_pad (stream, pad);
out:
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
gst_object_unref (self);
if (!opad)
GST_WARNING_OBJECT (pad, "Trying to get other pad after releasing");
return opad;
}
/* Generic pad functions */
static GstIterator *
gst_stream_synchronizer_iterate_internal_links (GstPad * pad)
{
GstIterator *it = NULL;
GstPad *opad;
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
it = gst_iterator_new_single (GST_TYPE_PAD, opad,
(GstCopyFunction) gst_object_ref, (GFreeFunc) gst_object_unref);
gst_object_unref (opad);
}
return it;
}
static gboolean
gst_stream_synchronizer_query (GstPad * pad, GstQuery * query)
{
GstPad *opad;
gboolean ret = FALSE;
GST_LOG_OBJECT (pad, "Handling query %s", GST_QUERY_TYPE_NAME (query));
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_peer_query (opad, query);
gst_object_unref (opad);
}
return ret;
}
static GstCaps *
gst_stream_synchronizer_getcaps (GstPad * pad)
{
GstPad *opad;
GstCaps *ret = NULL;
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_peer_get_caps (opad);
gst_object_unref (opad);
}
if (ret == NULL)
ret = gst_caps_new_any ();
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static gboolean
gst_stream_synchronizer_acceptcaps (GstPad * pad, GstCaps * caps)
{
GstPad *opad;
gboolean ret = FALSE;
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_peer_accept_caps (opad, caps);
gst_object_unref (opad);
}
GST_LOG_OBJECT (pad, "Caps%s accepted: %" GST_PTR_FORMAT, (ret ? "" : " not"),
caps);
return ret;
}
/* srcpad functions */
static gboolean
gst_stream_synchronizer_src_event (GstPad * pad, GstEvent * event)
{
GstStreamSynchronizer *self =
GST_STREAM_SYNCHRONIZER (gst_pad_get_parent (pad));
GstPad *opad;
gboolean ret = FALSE;
GST_LOG_OBJECT (pad, "Handling event %s: %" GST_PTR_FORMAT,
GST_EVENT_TYPE_NAME (event), event->structure);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:{
gdouble proportion;
GstClockTimeDiff diff;
GstClockTime timestamp;
gint64 running_time_diff;
GstStream *stream;
gst_event_parse_qos (event, &proportion, &diff, &timestamp);
gst_event_unref (event);
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream)
running_time_diff = stream->running_time_diff;
else
running_time_diff = -1;
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
if (running_time_diff == -1) {
GST_WARNING_OBJECT (pad, "QOS event before group start");
goto out;
} else if (timestamp < running_time_diff) {
GST_DEBUG_OBJECT (pad, "QOS event from previous group");
goto out;
}
GST_LOG_OBJECT (pad,
"Adjusting QOS event: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT " = %"
GST_TIME_FORMAT, GST_TIME_ARGS (timestamp),
GST_TIME_ARGS (running_time_diff),
GST_TIME_ARGS (timestamp - running_time_diff));
timestamp -= running_time_diff;
/* That case is invalid for QoS events */
if (diff < 0 && -diff > timestamp) {
GST_DEBUG_OBJECT (pad, "QOS event from previous group");
ret = TRUE;
goto out;
}
event = gst_event_new_qos (proportion, diff, timestamp);
break;
}
default:
break;
}
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_push_event (opad, event);
gst_object_unref (opad);
}
out:
gst_object_unref (self);
return ret;
}
/* sinkpad functions */
static gboolean
gst_stream_synchronizer_sink_event (GstPad * pad, GstEvent * event)
{
GstStreamSynchronizer *self =
GST_STREAM_SYNCHRONIZER (gst_pad_get_parent (pad));
GstPad *opad;
gboolean ret = FALSE;
GST_LOG_OBJECT (pad, "Handling event %s: %" GST_PTR_FORMAT,
GST_EVENT_TYPE_NAME (event), event->structure);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SINK_MESSAGE:{
GstMessage *message;
gst_event_parse_sink_message (event, &message);
if (message->structure
&& gst_structure_has_name (message->structure,
"playbin2-stream-changed")) {
GstStream *stream;
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream) {
GList *l;
gboolean all_wait = TRUE;
GST_DEBUG_OBJECT (pad, "Stream %d changed", stream->stream_number);
stream->wait = TRUE;
stream->new_stream = TRUE;
for (l = self->streams; l; l = l->next) {
GstStream *ostream = l->data;
all_wait = all_wait && ostream->wait;
if (!all_wait)
break;
}
if (all_wait) {
gint64 last_stop = 0;
GST_DEBUG_OBJECT (self, "All streams have changed -- unblocking");
for (l = self->streams; l; l = l->next) {
GstStream *ostream = l->data;
gint64 stop_running_time;
gint64 last_stop_running_time;
ostream->wait = FALSE;
stop_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.stop);
last_stop_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.last_stop);
last_stop =
MAX (last_stop, MAX (stop_running_time,
last_stop_running_time));
}
last_stop = MAX (0, last_stop);
self->group_start_time = MAX (self->group_start_time, last_stop);
GST_DEBUG_OBJECT (self, "New group start time: %" GST_TIME_FORMAT,
GST_TIME_ARGS (self->group_start_time));
g_cond_broadcast (self->stream_finish_cond);
}
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
}
gst_message_unref (message);
break;
}
case GST_EVENT_NEWSEGMENT:{
GstStream *stream;
gboolean update;
gdouble rate, applied_rate;
GstFormat format;
gint64 start, stop, position;
gst_event_parse_new_segment_full (event,
&update, &rate, &applied_rate, &format, &start, &stop, &position);
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream) {
if (stream->wait) {
GST_DEBUG_OBJECT (pad, "Stream %d is waiting", stream->stream_number);
g_cond_wait (self->stream_finish_cond, self->lock);
stream = gst_pad_get_element_private (pad);
if (stream)
stream->wait = FALSE;
}
}
if (stream && format == GST_FORMAT_TIME) {
if (stream->new_stream) {
gint64 last_stop_running_time = 0;
gint64 stop_running_time = 0;
if (stream->segment.format == GST_FORMAT_TIME) {
last_stop_running_time =
gst_segment_to_running_time (&stream->segment, GST_FORMAT_TIME,
stream->segment.last_stop);
last_stop_running_time = MAX (last_stop_running_time, 0);
stop_running_time =
gst_segment_to_running_time (&stream->segment, GST_FORMAT_TIME,
stream->segment.stop);
stop_running_time = MAX (last_stop_running_time, 0);
if (stop_running_time != last_stop_running_time) {
GST_WARNING_OBJECT (pad,
"Gap between last_stop and segment stop: %" GST_TIME_FORMAT
" != %" GST_TIME_FORMAT, GST_TIME_ARGS (stop_running_time),
GST_TIME_ARGS (last_stop_running_time));
}
if (stop_running_time < last_stop_running_time) {
GST_DEBUG_OBJECT (pad, "Updating stop position");
gst_pad_push_event (stream->srcpad,
gst_event_new_new_segment_full (TRUE, stream->segment.rate,
stream->segment.applied_rate, GST_FORMAT_TIME,
stream->segment.start, stream->segment.last_stop,
stream->segment.time));
gst_segment_set_newsegment_full (&stream->segment, TRUE,
stream->segment.rate, stream->segment.applied_rate,
GST_FORMAT_TIME, stream->segment.start,
stream->segment.last_stop, stream->segment.time);
}
stop_running_time = MAX (stop_running_time, last_stop_running_time);
GST_DEBUG_OBJECT (pad,
"Stop running time of last group: %" GST_TIME_FORMAT,
GST_TIME_ARGS (stop_running_time));
}
stream->new_stream = FALSE;
if (stop_running_time < self->group_start_time) {
gint64 diff = self->group_start_time - stop_running_time;
GST_DEBUG_OBJECT (pad,
"Advancing running time for other streams by: %"
GST_TIME_FORMAT, GST_TIME_ARGS (diff));
gst_pad_push_event (stream->srcpad,
gst_event_new_new_segment_full (FALSE, 1.0, 1.0,
GST_FORMAT_TIME, 0, diff, 0));
gst_segment_set_newsegment_full (&stream->segment, FALSE, 1.0, 1.0,
GST_FORMAT_TIME, 0, diff, 0);
}
}
GST_DEBUG_OBJECT (pad, "Segment was: %" GST_SEGMENT_FORMAT,
&stream->segment);
gst_segment_set_newsegment_full (&stream->segment, update, rate,
applied_rate, format, start, stop, position);
GST_DEBUG_OBJECT (pad, "Segment now is: %" GST_SEGMENT_FORMAT,
&stream->segment);
GST_DEBUG_OBJECT (pad, "Stream start running time: %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream->segment.accum));
stream->running_time_diff = stream->segment.accum;
} else if (stream) {
GST_ERROR_OBJECT (pad, "Non-TIME segment");
gst_segment_init (&stream->segment, GST_FORMAT_UNDEFINED);
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
break;
}
case GST_EVENT_FLUSH_STOP:{
GstStream *stream;
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream) {
GST_DEBUG_OBJECT (pad, "Resetting segment for stream %d",
stream->stream_number);
gst_segment_init (&stream->segment, GST_FORMAT_UNDEFINED);
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
break;
}
default:
break;
}
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_push_event (opad, event);
gst_object_unref (opad);
}
gst_object_unref (self);
return ret;
}
static GstFlowReturn
gst_stream_synchronizer_sink_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstPad *opad;
GstFlowReturn ret = GST_FLOW_ERROR;
GST_LOG_OBJECT (pad, "Allocating buffer: size=%u", size);
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_alloc_buffer (opad, offset, size, caps, buf);
gst_object_unref (opad);
}
GST_LOG_OBJECT (pad, "Allocation: %s", gst_flow_get_name (ret));
return ret;
}
static GstFlowReturn
gst_stream_synchronizer_sink_chain (GstPad * pad, GstBuffer * buffer)
{
GstStreamSynchronizer *self =
GST_STREAM_SYNCHRONIZER (gst_pad_get_parent (pad));
GstPad *opad;
GstFlowReturn ret = GST_FLOW_ERROR;
GstStream *stream;
GstClockTime timestamp = GST_CLOCK_TIME_NONE;
GstClockTime timestamp_end = GST_CLOCK_TIME_NONE;
GST_LOG_OBJECT (pad, "Handling buffer %p: size=%u, timestamp=%"
GST_TIME_FORMAT " duration=%" GST_TIME_FORMAT
" offset=%" G_GUINT64_FORMAT " offset_end=%" G_GUINT64_FORMAT,
buffer, GST_BUFFER_SIZE (buffer),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer));
timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)
&& GST_BUFFER_DURATION_IS_VALID (buffer))
timestamp_end = timestamp + GST_BUFFER_DURATION (buffer);
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream && stream->segment.format == GST_FORMAT_TIME
&& GST_CLOCK_TIME_IS_VALID (timestamp)) {
GST_LOG_OBJECT (pad,
"Updating last-stop from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream->segment.last_stop), GST_TIME_ARGS (timestamp));
gst_segment_set_last_stop (&stream->segment, GST_FORMAT_TIME, timestamp);
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
opad = gst_stream_get_other_pad_from_pad (pad);
if (opad) {
ret = gst_pad_push (opad, buffer);
gst_object_unref (opad);
}
GST_LOG_OBJECT (pad, "Push returned: %s", gst_flow_get_name (ret));
if (ret == GST_FLOW_OK) {
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream && stream->segment.format == GST_FORMAT_TIME
&& GST_CLOCK_TIME_IS_VALID (timestamp_end)) {
GST_LOG_OBJECT (pad,
"Updating last-stop from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream->segment.last_stop),
GST_TIME_ARGS (timestamp_end));
gst_segment_set_last_stop (&stream->segment, GST_FORMAT_TIME,
timestamp_end);
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
}
gst_object_unref (self);
return ret;
}
/* GstElement vfuncs */
static GstPad *
gst_stream_synchronizer_request_new_pad (GstElement * element,
GstPadTemplate * temp, const gchar * name)
{
GstStreamSynchronizer *self = GST_STREAM_SYNCHRONIZER (element);
GstStream *stream;
gchar *tmp;
GST_STREAM_SYNCHRONIZER_LOCK (self);
GST_DEBUG_OBJECT (self, "Requesting new pad for stream %d",
self->current_stream_number);
stream = g_slice_new0 (GstStream);
stream->transform = self;
stream->stream_number = self->current_stream_number;
tmp = g_strdup_printf ("sink_%d", self->current_stream_number);
stream->sinkpad = gst_pad_new_from_static_template (&sinktemplate, tmp);
g_free (tmp);
gst_pad_set_element_private (stream->sinkpad, stream);
gst_pad_set_iterate_internal_links_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_iterate_internal_links));
gst_pad_set_query_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_query));
gst_pad_set_getcaps_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_getcaps));
gst_pad_set_acceptcaps_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_acceptcaps));
gst_pad_set_event_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_sink_event));
gst_pad_set_chain_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_sink_chain));
gst_pad_set_bufferalloc_function (stream->sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_sink_bufferalloc));
tmp = g_strdup_printf ("src_%d", self->current_stream_number);
stream->srcpad = gst_pad_new_from_static_template (&srctemplate, tmp);
g_free (tmp);
gst_pad_set_element_private (stream->srcpad, stream);
gst_pad_set_iterate_internal_links_function (stream->srcpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_iterate_internal_links));
gst_pad_set_query_function (stream->srcpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_query));
gst_pad_set_getcaps_function (stream->srcpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_getcaps));
gst_pad_set_acceptcaps_function (stream->srcpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_acceptcaps));
gst_pad_set_event_function (stream->srcpad,
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_src_event));
gst_segment_init (&stream->segment, GST_FORMAT_UNDEFINED);
self->streams = g_list_prepend (self->streams, stream);
self->current_stream_number++;
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
/* Add pads and activate unless we're going to NULL */
g_static_rec_mutex_lock (GST_STATE_GET_LOCK (self));
if (GST_STATE_TARGET (self) != GST_STATE_NULL) {
gst_pad_set_active (stream->srcpad, TRUE);
gst_pad_set_active (stream->sinkpad, TRUE);
}
gst_element_add_pad (GST_ELEMENT_CAST (self), stream->srcpad);
gst_element_add_pad (GST_ELEMENT_CAST (self), stream->sinkpad);
g_static_rec_mutex_unlock (GST_STATE_GET_LOCK (self));
return stream->sinkpad;
}
/* Must be called with lock! */
static void
gst_stream_synchronizer_release_stream (GstStreamSynchronizer * self,
GstStream * stream)
{
GList *l;
GST_DEBUG_OBJECT (self, "Releasing stream %d", stream->stream_number);
for (l = self->streams; l; l = l->next) {
if (l->data == stream) {
self->streams = g_list_delete_link (self->streams, l);
break;
}
}
g_assert (l != NULL);
gst_pad_set_element_private (stream->srcpad, NULL);
gst_pad_set_element_private (stream->sinkpad, NULL);
gst_pad_set_active (stream->srcpad, FALSE);
gst_pad_set_active (stream->sinkpad, FALSE);
gst_element_remove_pad (GST_ELEMENT_CAST (self), stream->srcpad);
gst_element_remove_pad (GST_ELEMENT_CAST (self), stream->sinkpad);
if (stream->segment.format == GST_FORMAT_TIME) {
gint64 stop_running_time;
gint64 last_stop_running_time;
stop_running_time =
gst_segment_to_running_time (&stream->segment, GST_FORMAT_TIME,
stream->segment.stop);
last_stop_running_time =
gst_segment_to_running_time (&stream->segment, GST_FORMAT_TIME,
stream->segment.last_stop);
stop_running_time = MAX (stop_running_time, last_stop_running_time);
GST_DEBUG_OBJECT (stream->sinkpad,
"Stop running time was: %" GST_TIME_FORMAT,
GST_TIME_ARGS (stop_running_time));
self->group_start_time = MAX (self->group_start_time, stop_running_time);
}
g_slice_free (GstStream, stream);
}
static void
gst_stream_synchronizer_release_pad (GstElement * element, GstPad * pad)
{
GstStreamSynchronizer *self = GST_STREAM_SYNCHRONIZER (element);
GstStream *stream;
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
if (stream) {
g_assert (stream->sinkpad == pad);
gst_stream_synchronizer_release_stream (self, stream);
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
}
static GstStateChangeReturn
gst_stream_synchronizer_change_state (GstElement * element,
GstStateChange transition)
{
GstStreamSynchronizer *self = GST_STREAM_SYNCHRONIZER (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
GST_DEBUG_OBJECT (self, "State change NULL->READY");
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_DEBUG_OBJECT (self, "State change READY->PAUSED");
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
GST_DEBUG_OBJECT (self, "State change PAUSED->PLAYING");
break;
case GST_STATE_CHANGE_READY_TO_NULL:{
GST_DEBUG_OBJECT (self, "State change READY->NULL");
GST_STREAM_SYNCHRONIZER_LOCK (self);
g_cond_broadcast (self->stream_finish_cond);
while (self->streams)
gst_stream_synchronizer_release_stream (self, self->streams->data);
self->current_stream_number = 0;
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
break;
}
default:
break;
}
{
GstStateChangeReturn bret;
bret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
GST_DEBUG_OBJECT (self, "Base class state changed returned: %d", bret);
if (G_UNLIKELY (bret == GST_STATE_CHANGE_FAILURE))
return ret;
}
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
GST_DEBUG_OBJECT (self, "State change PLAYING->PAUSED");
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_DEBUG_OBJECT (self, "State change PAUSED->READY");
self->group_start_time = 0;
break;
case GST_STATE_CHANGE_READY_TO_NULL:{
GST_DEBUG_OBJECT (self, "State change READY->NULL");
break;
}
default:
break;
}
return ret;
}
/* GObject vfuncs */
static void
gst_stream_synchronizer_finalize (GObject * object)
{
GstStreamSynchronizer *self = GST_STREAM_SYNCHRONIZER (object);
if (self->lock) {
g_mutex_free (self->lock);
self->lock = NULL;
}
if (self->stream_finish_cond) {
g_cond_free (self->stream_finish_cond);
self->stream_finish_cond = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/* GObject type initialization */
static void
gst_stream_synchronizer_init (GstStreamSynchronizer * self,
GstStreamSynchronizerClass * klass)
{
self->lock = g_mutex_new ();
self->stream_finish_cond = g_cond_new ();
}
static void
gst_stream_synchronizer_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&srctemplate));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sinktemplate));
gst_element_class_set_details_simple (gstelement_class,
"Stream Synchronizer", "Generic",
"Synchronizes a group of streams to have equal durations and starting points",
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
}
static void
gst_stream_synchronizer_class_init (GstStreamSynchronizerClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *element_class = (GstElementClass *) klass;
GST_DEBUG_CATEGORY_INIT (stream_synchronizer_debug,
"streamsynchronizer", 0, "Stream Synchronizer");
gobject_class->finalize = gst_stream_synchronizer_finalize;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_change_state);
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_request_new_pad);
element_class->release_pad =
GST_DEBUG_FUNCPTR (gst_stream_synchronizer_release_pad);
}

66
gst/playback/gststreamsynchronizer.h Normal file
View file

@ -0,0 +1,66 @@
/* GStreamer
* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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.
*/
#ifndef __GST_STREAM_SYNCHRONIZER_H__
#define __GST_STREAM_SYNCHRONIZER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_STREAM_SYNCHRONIZER \
(gst_stream_synchronizer_get_type())
#define GST_STREAM_SYNCHRONIZER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_STREAM_SYNCHRONIZER, GstStreamSynchronizer))
#define GST_STREAM_SYNCHRONIZER_CAST(obj) \
((GstStreamSynchronizer *) obj)
#define GST_STREAM_SYNCHRONIZER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_STREAM_SYNCHRONIZER, GstStreamSynchronizerClass))
#define GST_IS_STREAM_SYNCHRONIZER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_STREAM_SYNCHRONIZER))
#define GST_IS_STREAM_SYNCHRONIZER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_STREAM_SYNCHRONIZER))
typedef struct _GstStreamSynchronizer GstStreamSynchronizer;
typedef struct _GstStreamSynchronizerClass GstStreamSynchronizerClass;
struct _GstStreamSynchronizer
{
GstElement parent;
/* < private > */
GMutex *lock;
GCond *stream_finish_cond;
GList *streams;
guint current_stream_number;
GstClockTime group_start_time;
};
struct _GstStreamSynchronizerClass
{
GstElementClass parent;
};
GType gst_stream_synchronizer_get_type (void);
G_END_DECLS
#endif /* __GST_STREAM_SYNCHRONIZER_H__ */

24
gst/playback/test7.c
View file

@ -93,6 +93,27 @@ eos_cb (GstBus * bus, GstMessage * msg, GMainLoop * main_loop)
g_main_loop_quit (main_loop);
}
static void
new_clock_cb (GstBus * bus, GstMessage * msg, gpointer nothing)
{
GstClock *clock;
gst_message_parse_new_clock (msg, &clock);
g_print ("NEW CLOCK: %s\n", GST_OBJECT_NAME (clock));
}
static void
clock_lost_cb (GstBus * bus, GstMessage * msg, GstElement * playbin)
{
GstClock *clock;
gst_message_parse_clock_lost (msg, &clock);
g_print ("CLOCK LOST: %s\n", GST_OBJECT_NAME (clock));
gst_element_set_state (playbin, GST_STATE_PAUSED);
gst_element_set_state (playbin, GST_STATE_PLAYING);
}
static void
about_to_finish_cb (GstElement * element, gchar * uri[])
{
@ -128,6 +149,9 @@ main (gint argc, gchar * argv[])
g_signal_connect (bus, "message::eos", G_CALLBACK (eos_cb), loop);
g_signal_connect (bus, "message::error", G_CALLBACK (error_cb), loop);
g_signal_connect (bus, "message::warning", G_CALLBACK (warning_cb), NULL);
g_signal_connect (bus, "message::new-clock", G_CALLBACK (new_clock_cb), NULL);
g_signal_connect (bus, "message::clock-lost", G_CALLBACK (clock_lost_cb),
player);
g_object_set (G_OBJECT (player), "uri", argv[1], NULL);