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qtdemux: track streams that are EOS on push mode to finish earlier

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When the segment has a defined stop position, qtdemux should check
when streams reach this position and mark those as EOS. When all
streams are EOS it will return GST_FLOW_EOS to upstream to allow
the pipeline to finish instead of continuously consume buffers
from upstream that are not useful for the segment.

https://bugzilla.gnome.org/show_bug.cgi?id=707530
This commit is contained in:
Thiago Santos 2013-09-05 00:17:16 -03:00
parent 33cf8b679d
commit be0eeae491
1 changed files with 47 additions and 17 deletions
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64
gst/isomp4/qtdemux.c
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@ -89,6 +89,8 @@
#define QTDEMUX_SECONDS_FROM_1904_TO_1970 (((1970 - 1904) * (guint64) 365 + \
QTDEMUX_LEAP_YEARS_FROM_1904_TO_1970) * QTDEMUX_SECONDS_PER_DAY)
#define STREAM_IS_EOS(s) (s->time_position == -1)
GST_DEBUG_CATEGORY (qtdemux_debug);
/*typedef struct _QtNode QtNode; */
@ -1858,6 +1860,7 @@ gst_qtdemux_reset (GstQTDemux * qtdemux, gboolean hard)
qtdemux->streams[n]->last_ret = GST_FLOW_OK;
qtdemux->streams[n]->sent_eos = FALSE;
qtdemux->streams[n]->segment_seqnum = 0;
qtdemux->streams[n]->time_position = 0;
}
}
}
@ -3720,7 +3723,7 @@ gst_qtdemux_sync_streams (GstQTDemux * demux)
if (demux->pullbased) {
/* loop mode is sample time based */
if (stream->time_position != -1)
if (!STREAM_IS_EOS (stream))
continue;
} else {
/* push mode is byte position based */
@ -4155,7 +4158,8 @@ gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
&& qtdemux->segment.stop <= min_time
&& qtdemux->streams[index]->on_keyframe)) {
GST_DEBUG_OBJECT (qtdemux, "we reached the end of our segment.");
goto eos;
qtdemux->streams[index]->time_position = -1;
goto eos_stream;
}
/* gap events for subtitle streams */
@ -4879,7 +4883,7 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
}
}
/* Figure out which stream this is packet belongs to */
/* Figure out which stream this packet belongs to */
for (i = 0; i < demux->n_streams; i++) {
stream = demux->streams[i];
if (stream->sample_index >= stream->n_samples)
@ -4902,24 +4906,50 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
}
/* Put data in a buffer, set timestamps, caps, ... */
outbuf = gst_adapter_take_buffer (demux->adapter, demux->neededbytes);
GST_DEBUG_OBJECT (demux, "stream : %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->fourcc));
g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
sample = &stream->samples[stream->sample_index];
dts = QTSAMPLE_DTS (stream, sample);
pts = QTSAMPLE_PTS (stream, sample);
duration = QTSAMPLE_DUR_DTS (stream, sample, dts);
keyframe = QTSAMPLE_KEYFRAME (stream, sample);
if (G_LIKELY (!(STREAM_IS_EOS (stream)))) {
outbuf = gst_adapter_take_buffer (demux->adapter, demux->neededbytes);
GST_DEBUG_OBJECT (demux, "stream : %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->fourcc));
ret = gst_qtdemux_decorate_and_push_buffer (demux, stream, outbuf,
dts, pts, duration, keyframe, dts, demux->offset);
g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
/* combine flows */
ret = gst_qtdemux_combine_flows (demux, stream, ret);
dts = QTSAMPLE_DTS (stream, sample);
pts = QTSAMPLE_PTS (stream, sample);
duration = QTSAMPLE_DUR_DTS (stream, sample, dts);
keyframe = QTSAMPLE_KEYFRAME (stream, sample);
/* check for segment end */
if (G_UNLIKELY (demux->segment.stop != -1
&& demux->segment.stop <= pts && stream->on_keyframe)) {
GST_DEBUG_OBJECT (demux, "we reached the end of our segment.");
stream->time_position = -1; /* this means EOS */
/* check if all streams are eos */
ret = GST_FLOW_EOS;
for (i = 0; i < demux->n_streams; i++) {
if (!STREAM_IS_EOS (demux->streams[i])) {
ret = GST_FLOW_OK;
break;
}
}
if (ret == GST_FLOW_EOS) {
GST_DEBUG_OBJECT (demux, "All streams are EOS, signal upstream");
goto eos;
}
} else {
ret = gst_qtdemux_decorate_and_push_buffer (demux, stream, outbuf,
dts, pts, duration, keyframe, dts, demux->offset);
}
/* combine flows */
ret = gst_qtdemux_combine_flows (demux, stream, ret);
} else {
/* skip this data, stream is EOS */
gst_adapter_flush (demux->adapter, demux->neededbytes);
}
stream->sample_index++;
stream->offset_in_sample = 0;