[FFmpeg-cvslog] avformat/iamf_writer: disallow Opus extradata with mapping family other than 0

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Fri Jul 19 20:50:52 2024 -0300| [2aab4e4cc0b4a666c7e5a752b25a337710b20bdb] | committer: James Almer

avformat/iamf_writer: disallow Opus extradata with mapping family other than 0

Clause 3.11.1 of IAMF[1] states the Opus ID Header should conform to  ChannelMappingFamily == 0.

[1]https://aomediacodec.github.io/iamf/#opus-specific

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2aab4e4cc0b4a666c7e5a752b25a337710b20bdb
---

 libavformat/iamf_writer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/iamf_writer.c b/libavformat/iamf_writer.c
index afe7a149cb..5e8d8f768b 100644
--- a/libavformat/iamf_writer.c
+++ b/libavformat/iamf_writer.c
@@ -39,7 +39,7 @@ static int update_extradata(IAMFCodecConfig *codec_config)
 
     switch(codec_config->codec_id) {
     case AV_CODEC_ID_OPUS:
-        if (codec_config->extradata_size < 19)
+        if (codec_config->extradata_size != 19)
             return AVERROR_INVALIDDATA;
         codec_config->extradata_size -= 8;
         AV_WB8(codec_config->extradata  + 0, AV_RL8(codec_config->extradata + 8)); // version