mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 12:11:13 +00:00
Code Issues 1 Projects Releases Wiki Activity

mpegvideoparse: Do not update codec-data when only quantiser matrix changes

Browse source
This commit is contained in:
Matej Knopp 2012-04-14 20:46:24 +02:00 committed by Sebastian Dröge
parent 0def19d473
commit 19ee94a8d1
1 changed files with 16 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
gst/videoparsers/gstmpegvideoparse.c
View file

@ -227,15 +227,27 @@ gst_mpegv_parse_process_config (GstMpegvParse * mpvparse, GstBuffer * buf,
guint size) guint size)
{ {
GList *tmp; GList *tmp;
GstMapInfo map;
guint8 *data; guint8 *data;
guint8 *data_with_prefix;
GstMapInfo map;
gst_buffer_map (buf, &map, GST_MAP_READ); gst_buffer_map (buf, &map, GST_MAP_READ);
data = map.data + mpvparse->seq_offset; data = map.data + mpvparse->seq_offset;
if (mpvparse->seq_offset < 4) {
/* This shouldn't happen, but just in case... */
GST_WARNING_OBJECT (mpvparse, "Sequence header start code missing.");
return FALSE;
}
/* pointer to sequence header data including the start code prefix -
used for codec private data */
data_with_prefix = data - 4;
/* only do stuff if something new */ /* only do stuff if something new; only compare first 11 bytes, changes in
quantiser matrix doesn't matter here. Also changing the matrices in
codec_data seems to cause problem with decoders */
if (mpvparse->config && size == gst_buffer_get_size (mpvparse->config) && if (mpvparse->config && size == gst_buffer_get_size (mpvparse->config) &&
gst_buffer_memcmp (mpvparse->config, 0, data, size) == 0) { gst_buffer_memcmp (mpvparse->config, 0, data_with_prefix, MIN (size,
11)) == 0) {
gst_buffer_unmap (buf, &map); gst_buffer_unmap (buf, &map);
return TRUE; return TRUE;
} }
@ -285,7 +297,7 @@ gst_mpegv_parse_process_config (GstMpegvParse * mpvparse, GstBuffer * buf,
gst_buffer_unref (mpvparse->config); gst_buffer_unref (mpvparse->config);
mpvparse->config = gst_buffer_new_and_alloc (size); mpvparse->config = gst_buffer_new_and_alloc (size);
gst_buffer_fill (mpvparse->config, 0, data, size); gst_buffer_fill (mpvparse->config, 0, data_with_prefix, size);
/* trigger src caps update */ /* trigger src caps update */
mpvparse->update_caps = TRUE; mpvparse->update_caps = TRUE;