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avdemux: use GstFlowCombiner

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To remove replicated code from all demuxers to a single standard way
of aggregating flow returns
This commit is contained in:
Thiago Santos 2014-05-26 16:04:50 -03:00
parent 5872891711
commit 66588ae60d
1 changed files with 16 additions and 41 deletions
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57
ext/libav/gstavdemux.c
View file

@ -28,6 +28,7 @@
#include <libavformat/avformat.h>
/* #include <ffmpeg/avi.h> */
#include <gst/gst.h>
#include <gst/base/gstflowcombiner.h>
#include "gstav.h"
#include "gstavcodecmap.h"
@ -49,7 +50,6 @@ struct _GstFFStream
GstClockTime last_ts;
gboolean discont;
gboolean eos;
GstFlowReturn last_flow;
GstTagList *tags; /* stream tags */
};
@ -69,6 +69,8 @@ struct _GstFFMpegDemux
GstFFStream *streams[MAX_STREAMS];
GstFlowCombiner *flowcombiner;
gint videopads, audiopads;
GstClockTime start_time;
@ -282,6 +284,8 @@ gst_ffmpegdemux_init (GstFFMpegDemux * demux)
demux->seek_event = NULL;
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
demux->flowcombiner = gst_flow_combiner_new ();
/* push based data */
g_mutex_init (&demux->ffpipe.tlock);
g_cond_init (&demux->ffpipe.cond);
@ -301,6 +305,8 @@ gst_ffmpegdemux_finalize (GObject * object)
demux = (GstFFMpegDemux *) object;
gst_flow_combiner_free (demux->flowcombiner);
g_mutex_clear (&demux->ffpipe.tlock);
g_cond_clear (&demux->ffpipe.cond);
gst_object_unref (demux->ffpipe.adapter);
@ -326,8 +332,10 @@ gst_ffmpegdemux_close (GstFFMpegDemux * demux)
stream = demux->streams[n];
if (stream) {
if (stream->pad)
if (stream->pad) {
gst_flow_combiner_remove_pad (demux->flowcombiner, stream->pad);
gst_element_remove_pad (GST_ELEMENT (demux), stream->pad);
}
if (stream->tags)
gst_tag_list_unref (stream->tags);
g_free (stream);
@ -602,15 +610,9 @@ gst_ffmpegdemux_perform_seek (GstFFMpegDemux * demux, GstEvent * event)
/* and prepare to continue streaming */
if (flush) {
gint n;
/* send flush stop, peer will accept data and events again. We
* are not yet providing data as we still have the STREAM_LOCK. */
gst_ffmpegdemux_push_event (demux, gst_event_new_flush_stop (TRUE));
for (n = 0; n < MAX_STREAMS; ++n) {
if (demux->streams[n])
demux->streams[n]->last_flow = GST_FLOW_OK;
}
}
/* if successfull seek, we update our real segment and push
* out the new segment. */
@ -890,34 +892,6 @@ gst_ffmpegdemux_src_convert (GstPad * pad,
}
#endif
static GstFlowReturn
gst_ffmpegdemux_aggregated_flow (GstFFMpegDemux * demux)
{
gint n;
GstFlowReturn res = GST_FLOW_OK;
gboolean have_ok = FALSE;
for (n = 0; n < MAX_STREAMS; n++) {
GstFFStream *s = demux->streams[n];
if (s) {
res = MIN (res, s->last_flow);
if (s->last_flow == GST_FLOW_OK)
have_ok = TRUE;
}
}
/* NOT_LINKED is OK, if at least one pad is linked */
if (res == GST_FLOW_NOT_LINKED && have_ok)
res = GST_FLOW_OK;
GST_DEBUG_OBJECT (demux, "Returning aggregated value of %s",
gst_flow_get_name (res));
return res;
}
static gchar *
gst_ffmpegdemux_create_padname (const gchar * templ, gint n)
{
@ -964,7 +938,6 @@ gst_ffmpegdemux_get_stream (GstFFMpegDemux * demux, AVStream * avstream)
stream->discont = TRUE;
stream->avstream = avstream;
stream->last_ts = GST_CLOCK_TIME_NONE;
stream->last_flow = GST_FLOW_OK;
stream->tags = NULL;
switch (ctx->codec_type) {
@ -1050,6 +1023,7 @@ gst_ffmpegdemux_get_stream (GstFFMpegDemux * demux, AVStream * avstream)
/* activate and add */
gst_element_add_pad (GST_ELEMENT (demux), pad);
gst_flow_combiner_add_pad (demux->flowcombiner, pad);
/* metadata */
if ((codec = gst_ffmpeg_get_codecid_longname (ctx->codec_id))) {
@ -1359,6 +1333,7 @@ gst_ffmpegdemux_loop (GstFFMpegDemux * demux)
GstClockTime timestamp, duration;
gint outsize;
gboolean rawvideo;
GstFlowReturn stream_last_flow;
/* open file if we didn't so already */
if (!demux->opened)
@ -1481,13 +1456,13 @@ gst_ffmpegdemux_loop (GstFFMpegDemux * demux)
"Sending out buffer time:%" GST_TIME_FORMAT " size:%" G_GSIZE_FORMAT,
GST_TIME_ARGS (timestamp), gst_buffer_get_size (outbuf));
ret = stream->last_flow = gst_pad_push (srcpad, outbuf);
ret = stream_last_flow = gst_pad_push (srcpad, outbuf);
/* if a pad is in e.g. WRONG_STATE, we want to pause to unlock the STREAM_LOCK */
if ((ret != GST_FLOW_OK)
&& ((ret = gst_ffmpegdemux_aggregated_flow (demux)) != GST_FLOW_OK)) {
if (((ret = gst_flow_combiner_update_flow (demux->flowcombiner,
ret)) != GST_FLOW_OK)) {
GST_WARNING_OBJECT (demux, "stream_movi flow: %s / %s",
gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
gst_flow_get_name (stream_last_flow), gst_flow_get_name (ret));
goto pause;
}