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Code Issues 1 Projects Releases Wiki Activity

tsdemux: Fix AC-4 detection

Browse source 
This regression was introduced by
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1102
and has been present since 1.18

* Stream Type 0x06 is defined in the base mpeg-ts specification as Private PES
Packets. Determining the content should be solely based on descriptors found
within the PMT.
* This was abused in that commit by defining a "bluray-only" stream type for AC4
: `ST_BD_AUDIO_AC4`
* This should be entirely handled in the regular private pes handling further
down in the code

Fixes #1154

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2176>
This commit is contained in:
Edward Hervey 2022-04-14 08:23:51 +02:00 committed by GStreamer Marge Bot
parent 9a4804fd3f
commit e4b9f6e6d8
2 changed files with 0 additions and 9 deletions
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1
subprojects/gst-plugins-bad/gst/mpegtsdemux/gstmpegdefs.h
View file

@ -56,7 +56,6 @@
#define ST_PS_DVD_SUBPICTURE 0xff
/* Blu-ray related (registration: 'HDMV'*/
#define ST_BD_AUDIO_AC4 0x06
#define ST_BD_AUDIO_LPCM 0x80
#define ST_BD_AUDIO_AC3 0x81
#define ST_BD_AUDIO_DTS 0x82

8
subprojects/gst-plugins-bad/gst/mpegtsdemux/tsdemux.c
View file

@ -1382,14 +1382,6 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
is_audio = TRUE;
caps = gst_caps_new_empty_simple ("audio/x-eac3");
break;
case ST_BD_AUDIO_AC4:
/* Opus also uses 0x06, and there are bad streams that have HDMV registration ID,
* but contain an Opus registration id, so check for it */
if (bstream->registration_id != DRF_ID_OPUS) {
is_audio = TRUE;
caps = gst_caps_new_empty_simple ("audio/x-ac4");
}
break;
case ST_BD_AUDIO_AC3_TRUE_HD:
is_audio = TRUE;
caps = gst_caps_new_empty_simple ("audio/x-true-hd");