FaSTTUBe/GST-Tensordecoder-ov_ep
37
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

mxfdemux: Use keyframe information from index table segments if available

Browse Source 
We don't implement keyframe detection for all codecs and this will allow us to
implement better seeking.
This commit is contained in:
Sebastian Dröge 2015-12-09 16:28:53 +02:00
parent b504672fc4
commit 6e06f8c936
1 changed files with 32 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
gst/mxf/mxfdemux.c
View File

@ -1728,6 +1728,36 @@ gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
if (outbuf)
keyframe = !GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
/* Prefer keyframe information from index tables over everything else */
if (demux->index_tables && outbuf) {
GList *l;
GstMXFDemuxIndexTable *index_table = NULL;
for (l = demux->index_tables; l; l = l->next) {
GstMXFDemuxIndexTable *tmp = l->data;
if (tmp->body_sid == etrack->body_sid
&& tmp->index_sid == etrack->index_sid) {
index_table = tmp;
break;
}
}
if (index_table) {
GstMXFDemuxIndex *index =
&g_array_index (index_table->offsets, GstMXFDemuxIndex,
etrack->position);
if (index->offset != 0) {
keyframe = index->keyframe;
if (keyframe)
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
}
}
}
if (!etrack->offsets)
etrack->offsets = g_array_new (FALSE, TRUE, sizeof (GstMXFDemuxIndex));
@ -2495,7 +2525,8 @@ gst_mxf_demux_handle_klv_packet (GstMXFDemux * demux, const MXFUL * key,
} else if (mxf_is_random_index_pack (key)) {
ret = gst_mxf_demux_handle_random_index_pack (demux, key, buffer);
if (ret == GST_FLOW_OK && !demux->index_table_segments_collected) {
if (ret == GST_FLOW_OK && demux->random_access
&& !demux->index_table_segments_collected) {
collect_index_table_segments (demux);
demux->index_table_segments_collected = TRUE;
}