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gst/matroska/matroska-mux.c: Don't misinterpret GST_CLOCK_TIME_NONE as very high timestamp value and then dead-lock w...

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Original commit message from CVS:
Patch by: Mark Nauwelaerts  <manauw at skynet be>
* gst/matroska/matroska-mux.c: (gst_matroska_mux_best_pad),
(gst_matroska_mux_stream_is_vorbis_header),
(gst_matroska_mux_write_data):
Don't misinterpret GST_CLOCK_TIME_NONE as very high timestamp
value and then dead-lock when muxing vorbis audio streams
(the three vorbis header buffers carry no timestamp, and it
would try to mux these after all video buffers). Fixes #340346.
Improve clustering: start a new cluster also whenever we get
a keyframe.
This commit is contained in:
Mark Nauwelaerts 2006-05-03 14:51:50 +00:00 committed by Tim-Philipp Müller
parent e73a19cb48
commit fcd464ea30
2 changed files with 64 additions and 5 deletions
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15
ChangeLog
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@ -1,3 +1,18 @@
2006-05-03 Tim-Philipp Müller <tim at centricular dot net>
Patch by: Mark Nauwelaerts <manauw at skynet be>
* gst/matroska/matroska-mux.c: (gst_matroska_mux_best_pad),
(gst_matroska_mux_stream_is_vorbis_header),
(gst_matroska_mux_write_data):
Don't misinterpret GST_CLOCK_TIME_NONE as very high timestamp
value and then dead-lock when muxing vorbis audio streams
(the three vorbis header buffers carry no timestamp, and it
would try to mux these after all video buffers). Fixes #340346.
Improve clustering: start a new cluster also whenever we get
a keyframe.
2006-05-03 Thomas Vander Stichele <thomas at apestaart dot org> 2006-05-03 Thomas Vander Stichele <thomas at apestaart dot org>
* win32/common/config.h: * win32/common/config.h:

54
gst/matroska/matroska-mux.c
View File

@ -1292,9 +1292,10 @@ gst_matroska_mux_best_pad (GstMatroskaMux * mux, gboolean * popped)
/* if we have a buffer check if it is better then the current best one */ /* if we have a buffer check if it is better then the current best one */
if (collect_pad->buffer != NULL) { if (collect_pad->buffer != NULL) {
if (best == NULL if (best == NULL || !GST_BUFFER_TIMESTAMP_IS_VALID (collect_pad->buffer)
|| GST_BUFFER_TIMESTAMP (collect_pad->buffer) < || (GST_BUFFER_TIMESTAMP_IS_VALID (best->buffer)
GST_BUFFER_TIMESTAMP (best->buffer)) { && GST_BUFFER_TIMESTAMP (collect_pad->buffer) <
GST_BUFFER_TIMESTAMP (best->buffer))) {
best = collect_pad; best = collect_pad;
} }
} }
@ -1303,6 +1304,33 @@ gst_matroska_mux_best_pad (GstMatroskaMux * mux, gboolean * popped)
return best; return best;
} }
static gboolean
gst_matroska_mux_stream_is_vorbis_header (GstMatroskaMux * mux,
GstMatroskaPad * collect_pad)
{
GstMatroskaTrackAudioContext *audio_ctx;
audio_ctx = (GstMatroskaTrackAudioContext *) collect_pad->track;
if (collect_pad->track->type != GST_MATROSKA_TRACK_TYPE_AUDIO)
return FALSE;
if (audio_ctx->first_frame != FALSE)
return FALSE;
if (strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS))
return FALSE;
/* HACK: three frame headers are counted using pos */
if (++collect_pad->track->pos <= 3)
return TRUE;
/* 4th vorbis packet => skipped all headers */
collect_pad->track->pos = 0;
audio_ctx->first_frame = TRUE;
return FALSE;
}
/** /**
* gst_matroska_mux_buffer_header: * gst_matroska_mux_buffer_header:
@ -1356,12 +1384,28 @@ gst_matroska_mux_write_data (GstMatroskaMux * mux, GstMatroskaPad * collect_pad)
buf = collect_pad->buffer; buf = collect_pad->buffer;
collect_pad->buffer = NULL; collect_pad->buffer = NULL;
/* vorbis header are retrieved from caps and placed in CodecPrivate */
if (gst_matroska_mux_stream_is_vorbis_header (mux, collect_pad)) {
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
/* hm, invalid timestamp (due to --to be fixed--- element upstream);
* this would wreak havoc with time stored in matroska file */
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
GST_WARNING_OBJECT (collect_pad->collect.pad,
"Invalid buffer timestamp; dropping buffer");
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
/* set the timestamp for outgoing buffers */ /* set the timestamp for outgoing buffers */
ebml->timestamp = GST_BUFFER_TIMESTAMP (buf); ebml->timestamp = GST_BUFFER_TIMESTAMP (buf);
if (mux->cluster) { if (mux->cluster) {
/* start a new cluster every two seconds */ /* start a new cluster every two seconds or at keyframe */
if (mux->cluster_time + GST_SECOND * 2 < GST_BUFFER_TIMESTAMP (buf)) { if (mux->cluster_time + GST_SECOND * 2 < GST_BUFFER_TIMESTAMP (buf)
|| !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT)) {
GstMatroskaMetaSeekIndex *idx; GstMatroskaMetaSeekIndex *idx;
gst_ebml_write_master_finish (ebml, mux->cluster); gst_ebml_write_master_finish (ebml, mux->cluster);