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mssdemux: remove stream locks

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Simplify the locking by using a single lock instead of having one
lock per stream. This still works and is simpler to maintain.
This commit is contained in:
Thiago Santos 2013-12-10 15:41:00 -03:00
parent 2ce4f6a8e4
commit e847bea1e1
2 changed files with 13 additions and 20 deletions
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28
ext/smoothstreaming/gstmssdemux.c
View file

@ -234,7 +234,6 @@ gst_mss_demux_stream_new (GstMssDemux * mssdemux,
stream->downloader = gst_uri_downloader_new ();
stream->dataqueue =
gst_data_queue_new (_data_queue_check_full, NULL, NULL, stream);
g_mutex_init (&stream->mutex);
/* Downloading task */
g_rec_mutex_init (&stream->download_lock);
@ -293,7 +292,6 @@ gst_mss_demux_stream_free (GstMssDemuxStream * stream)
}
if (stream->caps)
gst_caps_unref (stream->caps);
g_mutex_clear (&stream->mutex);
g_free (stream);
}
@ -649,13 +647,13 @@ gst_mss_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
GstMssDemuxStream *stream = iter->data;
if (stream->pad == pad) {
GST_MSS_DEMUX_STREAM_LOCK (stream);
GST_OBJECT_LOCK (mssdemux);
if (GST_TASK_STATE (stream->download_task) == GST_TASK_PAUSED
&& stream->last_ret == GST_FLOW_NOT_LINKED) {
stream->restart_download = TRUE;
gst_task_start (stream->download_task);
}
GST_MSS_DEMUX_STREAM_UNLOCK (stream);
GST_OBJECT_UNLOCK (mssdemux);
gst_event_unref (event);
return TRUE;
}
@ -1193,8 +1191,6 @@ gst_mss_demux_download_loop (GstMssDemuxStream * stream)
GstClockTime cur, ts;
gint64 pos;
GST_MSS_DEMUX_STREAM_LOCK (stream);
GST_DEBUG_OBJECT (mssdemux,
"Activating stream %p due to reconfigure " "event", stream);
@ -1247,8 +1243,6 @@ gst_mss_demux_download_loop (GstMssDemuxStream * stream)
gst_data_queue_set_flushing (stream->dataqueue, FALSE);
stream->restart_download = FALSE;
gst_task_start (mssdemux->stream_task);
GST_MSS_DEMUX_STREAM_UNLOCK (stream);
}
GST_DEBUG_OBJECT (mssdemux,
@ -1297,10 +1291,12 @@ gst_mss_demux_download_loop (GstMssDemuxStream * stream)
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
if (catch_up) {
ret = stream->last_ret = gst_pad_push (stream->pad, buffer);
ret = gst_pad_push (stream->pad, buffer);
if (G_LIKELY (ret == GST_FLOW_OK))
stream->last_ret = GST_FLOW_CUSTOM_SUCCESS;
/* TODO handle return */
else {
/* TODO handle return */
}
} else {
gst_mss_demux_stream_store_object (stream, GST_MINI_OBJECT_CAST (buffer));
}
@ -1358,12 +1354,12 @@ cancelled:
}
notlinked:
{
GST_MSS_DEMUX_STREAM_LOCK (stream);
GST_OBJECT_LOCK (mssdemux);
if (stream->last_ret == GST_FLOW_NOT_LINKED) {
gst_task_pause (stream->download_task);
gst_data_queue_set_flushing (stream->dataqueue, TRUE);
}
GST_MSS_DEMUX_STREAM_UNLOCK (stream);
GST_OBJECT_UNLOCK (mssdemux);
}
}
@ -1385,7 +1381,7 @@ gst_mss_demux_select_latest_stream (GstMssDemux * mssdemux,
GstDataQueueItem *item;
other = iter->data;
if (other->eos || other->last_ret == GST_FLOW_NOT_LINKED) {
if (other->eos || other->last_ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (mssdemux, "Skipping stream %p eos:%d last-ret:%d",
other, other->eos, other->last_ret);
continue;
@ -1516,7 +1512,8 @@ gst_mss_demux_stream_loop (GstMssDemux * mssdemux)
stream->have_data = TRUE;
mssdemux->segment.position = GST_BUFFER_TIMESTAMP (object);
stream->last_ret = gst_pad_push (stream->pad, GST_BUFFER_CAST (object));
ret = gst_pad_push (stream->pad, GST_BUFFER_CAST (object));
GST_DEBUG_OBJECT (mssdemux, "Pushed on pad %s:%s result: %d (%s)",
GST_DEBUG_PAD_NAME (stream->pad), ret, gst_flow_get_name (ret));
} else if (GST_IS_EVENT (object)) {
@ -1526,13 +1523,14 @@ gst_mss_demux_stream_loop (GstMssDemux * mssdemux)
GST_DEBUG_OBJECT (mssdemux, "Pushing event %p on pad %s", object,
GST_PAD_NAME (stream->pad));
gst_pad_push_event (stream->pad, GST_EVENT_CAST (object));
stream->last_ret = GST_FLOW_EOS;
ret = GST_FLOW_EOS;
} else {
g_return_if_reached ();
}
/* Lock as this may change the tasks state */
GST_OBJECT_LOCK (mssdemux);
stream->last_ret = ret;
ret = gst_mss_demux_combine_flows (mssdemux);
switch (ret) {
case GST_FLOW_EOS:

5
ext/smoothstreaming/gstmssdemux.h
View file

@ -52,14 +52,9 @@ typedef struct _GstMssDemuxStream GstMssDemuxStream;
typedef struct _GstMssDemux GstMssDemux;
typedef struct _GstMssDemuxClass GstMssDemuxClass;
#define GST_MSS_DEMUX_STREAM_LOCK(s) g_mutex_lock (&(s)->mutex)
#define GST_MSS_DEMUX_STREAM_UNLOCK(s) g_mutex_unlock (&(s)->mutex)
struct _GstMssDemuxStream {
GstPad *pad;
GMutex mutex;
GstCaps *caps;
GstMssDemux *parent;