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gst/mpegaudioparse/gstmpegaudioparse.c: Try a bit harder to get valid timestamps, especially if upstream gives us one...

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Original commit message from CVS:
* gst/mpegaudioparse/gstmpegaudioparse.c:
(gst_mp3parse_emit_frame), (gst_mp3parse_chain):
Try a bit harder to get valid timestamps, especially if upstream
gives us one and we are at the first frame or resyncing.
Return UNEXPECTED if we get a valid timestamp that is outside of
our configured segment. After all changes done so far this doesn't
seem to cause any regression, please test.
This commit is contained in:
Sebastian Dröge 2008-02-22 06:25:28 +00:00
parent 269a9706fc
commit 14926b9c60
2 changed files with 44 additions and 9 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2008-02-22 Sebastian Dröge <slomo@circular-chaos.org>
* gst/mpegaudioparse/gstmpegaudioparse.c:
(gst_mp3parse_emit_frame), (gst_mp3parse_chain):
Try a bit harder to get valid timestamps, especially if upstream
gives us one and we are at the first frame or resyncing.
Return UNEXPECTED if we get a valid timestamp that is outside of
our configured segment. After all changes done so far this doesn't
seem to cause any regression, please test.
2008-02-22 Sebastian Dröge <slomo@circular-chaos.org>
Patch by:

43
gst/mpegaudioparse/gstmpegaudioparse.c
View file

@ -553,7 +553,8 @@ gst_mp3parse_emit_frame (GstMPEGAudioParse * mp3parse, guint size)
/* No timestamp yet, convert our offset to a timestamp if we can, or
* start at 0 */
if (mp3parse_bytepos_to_time (mp3parse, mp3parse->cur_offset, &ts))
if (mp3parse_bytepos_to_time (mp3parse, mp3parse->cur_offset, &ts) &&
GST_CLOCK_TIME_IS_VALID (ts))
GST_BUFFER_TIMESTAMP (outbuf) = ts;
else {
GST_BUFFER_TIMESTAMP (outbuf) = 0;
@ -614,11 +615,11 @@ gst_mp3parse_emit_frame (GstMPEGAudioParse * mp3parse, guint size)
* 9 (29) frames are the theoretical maximum of frames that contain
* data for the current frame (bit reservoir).
*/
if (mp3parse->segment.start == 0) {
push_start = 0;
} else if (GST_CLOCK_TIME_IS_VALID (mp3parse->max_bitreservoir)) {
if (mp3parse->segment.start > mp3parse->max_bitreservoir)
if (GST_CLOCK_TIME_IS_VALID (mp3parse->segment.start) &&
mp3parse->segment.start > mp3parse->max_bitreservoir)
push_start = mp3parse->segment.start - mp3parse->max_bitreservoir;
else
push_start = 0;
@ -630,18 +631,34 @@ gst_mp3parse_emit_frame (GstMPEGAudioParse * mp3parse, guint size)
GST_BUFFER_TIMESTAMP_IS_VALID (outbuf) &&
GST_BUFFER_DURATION_IS_VALID (outbuf) &&
GST_BUFFER_TIMESTAMP (outbuf) + GST_BUFFER_DURATION (outbuf)
< push_start)
|| (GST_CLOCK_TIME_IS_VALID (mp3parse->segment.stop)
&& GST_BUFFER_TIMESTAMP (outbuf) >= mp3parse->segment.stop))) {
< push_start))) {
GST_DEBUG_OBJECT (mp3parse,
"Buffer outside of configured segment range %" GST_TIME_FORMAT
"Buffer before configured segment range %" GST_TIME_FORMAT
" to %" GST_TIME_FORMAT ", dropping, timestamp %"
GST_TIME_FORMAT ", offset 0x%08" G_GINT64_MODIFIER "x",
GST_TIME_ARGS (push_start), GST_TIME_ARGS (mp3parse->segment.stop),
GST_TIME_FORMAT " duration %" GST_TIME_FORMAT
", offset 0x%08" G_GINT64_MODIFIER "x", GST_TIME_ARGS (push_start),
GST_TIME_ARGS (mp3parse->segment.stop),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)),
GST_BUFFER_OFFSET (outbuf));
gst_buffer_unref (outbuf);
ret = GST_FLOW_OK;
} else if (G_UNLIKELY (GST_BUFFER_TIMESTAMP_IS_VALID (outbuf) &&
GST_CLOCK_TIME_IS_VALID (mp3parse->segment.stop) &&
GST_BUFFER_TIMESTAMP (outbuf) >= mp3parse->segment.stop)) {
GST_DEBUG_OBJECT (mp3parse,
"Buffer after configured segment range %" GST_TIME_FORMAT
" to %" GST_TIME_FORMAT ", returning GST_FLOW_UNEXPECTED, timestamp %"
GST_TIME_FORMAT " duration %" GST_TIME_FORMAT ", offset 0x%08"
G_GINT64_MODIFIER "x", GST_TIME_ARGS (push_start),
GST_TIME_ARGS (mp3parse->segment.stop),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)),
GST_BUFFER_OFFSET (outbuf));
gst_buffer_unref (outbuf);
ret = GST_FLOW_UNEXPECTED;
} else {
GST_DEBUG_OBJECT (mp3parse,
"pushing buffer of %d bytes, timestamp %" GST_TIME_FORMAT
@ -1012,6 +1029,14 @@ gst_mp3parse_chain (GstPad * pad, GstBuffer * buf)
mp3parse->pending_ts = timestamp;
mp3parse->pending_offset = mp3parse->tracked_offset + avail;
/* If we have no data pending and the next timestamp is
* invalid we can use the upstream timestamp for the next frame.
*
* This will give us a timestamp if we're resyncing and upstream
* gave us -1 as offset. */
if (avail == 0 && !GST_CLOCK_TIME_IS_VALID (mp3parse->next_ts))
mp3parse->next_ts = timestamp;
GST_LOG_OBJECT (mp3parse, "Have pending ts %" GST_TIME_FORMAT
" to apply in %lld bytes (@ off %lld)\n",
GST_TIME_ARGS (mp3parse->pending_ts), avail, mp3parse->pending_offset);