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splitmuxsrc: Use a separate lock to delay typefind.

Browse source 
Don't hold the main splitmux part lock over
the parent state change function, as it prevents
posting error messages that happen. Since the purpose
is to prevent typefinding from proceeding, use a
separate mutex just for that.
This commit is contained in:
Jan Schmidt 2015-06-25 01:35:27 +10:00
parent 72b86ae868
commit e7ec32801a
2 changed files with 18 additions and 4 deletions
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21
gst/multifile/gstsplitmuxpartreader.c
View file

@ -34,6 +34,9 @@ GST_DEBUG_CATEGORY_STATIC (splitmux_part_debug);
#define SPLITMUX_PART_WAIT(p) g_cond_wait (&(p)->inactive_cond, &(p)->lock)
#define SPLITMUX_PART_BROADCAST(p) g_cond_broadcast (&(p)->inactive_cond)
#define SPLITMUX_PART_TYPE_LOCK(p) g_mutex_lock(&(p)->type_lock)
#define SPLITMUX_PART_TYPE_UNLOCK(p) g_mutex_unlock(&(p)->type_lock)
enum
{
SIGNAL_PREPARED,
@ -628,6 +631,7 @@ gst_splitmux_part_reader_init (GstSplitMuxPartReader * reader)
g_cond_init (&reader->inactive_cond);
g_mutex_init (&reader->lock);
g_mutex_init (&reader->type_lock);
/* FIXME: Create elements on a state change */
reader->src = gst_element_factory_make ("filesrc", NULL);
@ -672,6 +676,9 @@ splitmux_part_reader_finalize (GObject * object)
{
GstSplitMuxPartReader *reader = (GstSplitMuxPartReader *) object;
g_mutex_clear (&reader->lock);
g_mutex_clear (&reader->type_lock);
g_free (reader->path);
G_OBJECT_CLASS (parent_class)->finalize (object);
@ -1027,11 +1034,13 @@ gst_splitmux_part_reader_change_state (GstElement * element,
break;
}
case GST_STATE_CHANGE_READY_TO_PAUSED:{
/* Hold the splitmux part lock until after the
/* Hold the splitmux type lock until after the
* parent state change function has finished
* changing the states of things */
* changing the states of things, and type finding can continue */
SPLITMUX_PART_LOCK (reader);
g_object_set (reader->src, "location", reader->path, NULL);
SPLITMUX_PART_UNLOCK (reader);
SPLITMUX_PART_TYPE_LOCK (reader);
break;
}
case GST_STATE_CHANGE_READY_TO_NULL:
@ -1057,7 +1066,7 @@ gst_splitmux_part_reader_change_state (GstElement * element,
if (ret == GST_STATE_CHANGE_FAILURE) {
if (transition == GST_STATE_CHANGE_READY_TO_PAUSED) {
/* Make sure to release the lock we took above */
SPLITMUX_PART_UNLOCK (reader);
SPLITMUX_PART_TYPE_UNLOCK (reader);
}
goto beach;
}
@ -1065,7 +1074,11 @@ gst_splitmux_part_reader_change_state (GstElement * element,
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
/* Sleep and wait until all streams have been collected, then do the seeks
* to measure the stream lengths. This took the part lock above already... */
* to measure the stream lengths. This took the type lock above,
* but it's OK to release it now and let typefinding happen... */
SPLITMUX_PART_TYPE_UNLOCK (reader);
SPLITMUX_PART_LOCK (reader);
reader->prep_state = PART_STATE_PREPARING_COLLECT_STREAMS;
gst_splitmux_part_reader_set_flushing_locked (reader, FALSE);
reader->running = TRUE;

1
gst/multifile/gstsplitmuxpartreader.h
View file

@ -77,6 +77,7 @@ struct _GstSplitMuxPartReader
GCond inactive_cond;
GMutex lock;
GMutex type_lock;
GstSplitMuxPartReaderPadCb get_pad_cb;
gpointer cb_data;