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qtmux: Only use buffer durations if they are actually valid

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=774840
This commit is contained in:
Sebastian Dröge 2016-11-22 16:18:41 +02:00
parent 351f2fca0a
commit 6fb5f85354
1 changed files with 21 additions and 19 deletions
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40
gst/isomp4/gstqtmux.c
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@ -3242,8 +3242,11 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
/* duration actually means time delta between samples, so we calculate
* the duration based on the difference in DTS or PTS, falling back
* to DURATION if the other two don't exist, such as with the last
* sample before EOS. */
duration = GST_BUFFER_DURATION (last_buf);
* sample before EOS. Or use 0 if nothing else is available */
if (GST_BUFFER_DURATION_IS_VALID (last_buf))
duration = GST_BUFFER_DURATION (last_buf);
else
duration = 0;
if (!pad->sparse) {
if (last_buf && buf && GST_BUFFER_DTS_IS_VALID (buf)
&& GST_BUFFER_DTS_IS_VALID (last_buf))
@ -3255,12 +3258,6 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
gst_buffer_replace (&pad->last_buf, buf);
/* for computing the avg bitrate */
if (G_LIKELY (last_buf)) {
pad->total_bytes += gst_buffer_get_size (last_buf);
pad->total_duration += duration;
}
if (qtmux->current_pad != pad || qtmux->current_chunk_offset == -1) {
GST_DEBUG_OBJECT (qtmux,
"Switching to next chunk for pad %s:%s: offset %" G_GUINT64_FORMAT
@ -3276,8 +3273,6 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
}
qtmux->current_chunk_size += gst_buffer_get_size (last_buf);
qtmux->current_chunk_duration += duration;
last_dts = gst_util_uint64_scale_round (pad->last_dts,
atom_trak_get_timescale (pad->trak), GST_SECOND);
@ -3295,13 +3290,13 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
if (GST_BUFFER_DURATION (last_buf) != GST_CLOCK_TIME_NONE) {
nsamples = gst_util_uint64_scale_round (GST_BUFFER_DURATION (last_buf),
atom_trak_get_timescale (pad->trak), GST_SECOND);
duration = GST_BUFFER_DURATION (last_buf);
} else {
nsamples = gst_buffer_get_size (last_buf) / sample_size;
duration =
gst_util_uint64_scale_round (nsamples, GST_SECOND,
atom_trak_get_timescale (pad->trak));
}
if (nsamples > 0)
duration = GST_BUFFER_DURATION (last_buf) / nsamples;
else
duration = 0;
/* timescale = samplerate */
scaled_duration = 1;
@ -3309,14 +3304,13 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
} else {
nsamples = 1;
sample_size = gst_buffer_get_size (last_buf);
if ((pad->last_buf && GST_BUFFER_DTS_IS_VALID (pad->last_buf))
if ((buf && GST_BUFFER_DTS_IS_VALID (buf))
|| GST_BUFFER_DTS_IS_VALID (last_buf)) {
gint64 scaled_dts;
if (pad->last_buf && GST_BUFFER_DTS_IS_VALID (pad->last_buf)) {
pad->last_dts = GST_BUFFER_DTS (pad->last_buf);
if (buf && GST_BUFFER_DTS_IS_VALID (buf)) {
pad->last_dts = GST_BUFFER_DTS (buf);
} else {
pad->last_dts = GST_BUFFER_DTS (last_buf) +
GST_BUFFER_DURATION (last_buf);
pad->last_dts = GST_BUFFER_DTS (last_buf) + duration;
}
if ((gint64) (pad->last_dts) < 0) {
scaled_dts = -gst_util_uint64_scale_round (-pad->last_dts,
@ -3338,6 +3332,14 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
}
}
/* for computing the avg bitrate */
if (G_LIKELY (last_buf)) {
pad->total_bytes += gst_buffer_get_size (last_buf);
pad->total_duration += duration;
}
qtmux->current_chunk_size += gst_buffer_get_size (last_buf);
qtmux->current_chunk_duration += duration;
chunk_offset = qtmux->current_chunk_offset;
GST_LOG_OBJECT (qtmux,