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qtdemux: elst should offset samples instead of buffers

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The current approach where buffers are offset is not ideal, as during seek
and loop current time is compared to sample times.

https://bugzilla.gnome.org/show_bug.cgi?id=700264
This commit is contained in:
Matej Knopp 2013-07-31 10:42:07 +02:00 committed by Sebastian Dröge
parent 6c349d6ec3
commit 2269ac8f28
1 changed files with 13 additions and 9 deletions
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22
gst/isomp4/qtdemux.c
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@ -2559,7 +2559,9 @@ qtdemux_parse_trun (GstQTDemux * qtdemux, GstByteReader * trun,
sample->offset = *running_offset; sample->offset = *running_offset;
sample->pts_offset = ct; sample->pts_offset = ct;
sample->size = size; sample->size = size;
sample->timestamp = timestamp; sample->timestamp =
timestamp + gst_util_uint64_scale (stream->elst_offset,
stream->timescale, GST_SECOND);
sample->duration = dur; sample->duration = dur;
/* sample-is-difference-sample */ /* sample-is-difference-sample */
/* ismv seems to use 0x40 for keyframe, 0xc0 for non-keyframe, /* ismv seems to use 0x40 for keyframe, 0xc0 for non-keyframe,
@ -3958,11 +3960,6 @@ gst_qtdemux_decorate_and_push_buffer (GstQTDemux * qtdemux,
GstFlowReturn ret = GST_FLOW_OK; GstFlowReturn ret = GST_FLOW_OK;
/* offset the timestamps according to the edit list */ /* offset the timestamps according to the edit list */
if (GST_CLOCK_TIME_IS_VALID (pts))
pts += stream->elst_offset;
if (GST_CLOCK_TIME_IS_VALID (dts))
dts += stream->elst_offset;
position += stream->elst_offset;
if (G_UNLIKELY (stream->fourcc == FOURCC_rtsp)) { if (G_UNLIKELY (stream->fourcc == FOURCC_rtsp)) {
gchar *url; gchar *url;
@ -6301,7 +6298,10 @@ qtdemux_parse_samples (GstQTDemux * qtdemux, QtDemuxStream * stream, guint32 n)
j, GST_TIME_ARGS (gst_util_uint64_scale (stream->stco_sample_index, j, GST_TIME_ARGS (gst_util_uint64_scale (stream->stco_sample_index,
GST_SECOND, stream->timescale)), cur->size); GST_SECOND, stream->timescale)), cur->size);
cur->timestamp = stream->stco_sample_index; cur->timestamp =
stream->stco_sample_index +
gst_util_uint64_scale (stream->elst_offset, stream->timescale,
GST_SECOND);
cur->duration = stream->samples_per_chunk; cur->duration = stream->samples_per_chunk;
cur->keyframe = TRUE; cur->keyframe = TRUE;
cur++; cur++;
@ -6318,9 +6318,13 @@ qtdemux_parse_samples (GstQTDemux * qtdemux, QtDemuxStream * stream, guint32 n)
done2: done2:
{ {
guint32 n_sample_times; guint32 n_sample_times;
gint64 elst_offset;
n_sample_times = stream->n_sample_times; n_sample_times = stream->n_sample_times;
cur = first; cur = first;
elst_offset =
gst_util_uint64_scale (stream->elst_offset, stream->timescale,
GST_SECOND);
for (i = stream->stts_index; i < n_sample_times; i++) { for (i = stream->stts_index; i < n_sample_times; i++) {
guint32 stts_samples; guint32 stts_samples;
@ -6352,7 +6356,7 @@ done2:
GST_TIME_ARGS (gst_util_uint64_scale (stts_time, GST_SECOND, GST_TIME_ARGS (gst_util_uint64_scale (stts_time, GST_SECOND,
stream->timescale))); stream->timescale)));
cur->timestamp = stts_time; cur->timestamp = stts_time + elst_offset;
cur->duration = stts_duration; cur->duration = stts_duration;
/* avoid 32-bit wrap-around, /* avoid 32-bit wrap-around,
@ -6381,7 +6385,7 @@ done2:
(guint) (cur - samples), (guint) (cur - samples),
GST_TIME_ARGS (gst_util_uint64_scale (stream->stts_time, GST_SECOND, GST_TIME_ARGS (gst_util_uint64_scale (stream->stts_time, GST_SECOND,
stream->timescale))); stream->timescale)));
cur->timestamp = stream->stts_time; cur->timestamp = stream->stts_time + elst_offset;
cur->duration = -1; cur->duration = -1;
} }
} }