[FFmpeg-cvslog] avformat/iamf_parse: use get_bits_long() to read the remaining AAC extradata bits

[James Almer]

ffmpeg | branch: release/7.0 | James Almer <jamrial at gmail.com> | Sat Aug 31 14:32:02 2024 -0300| [fee22dba5ffbd317a6ed5ec0d5a798be17eada13] | committer: James Almer

avformat/iamf_parse: use get_bits_long() to read the remaining AAC extradata bits

The output of put_bits_left() here can be as big as 27, which is a bit
count not supported by get_bits().

Fixes fate-iamf-stereo-demux when using --assert-level=2

Signed-off-by: James Almer <jamrial at gmail.com>
(cherry picked from commit fa5d3cc65309052402c6e3223d127b930b9e5699)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fee22dba5ffbd317a6ed5ec0d5a798be17eada13
---

 libavformat/iamf_parse.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c
index d6b7be81c0..7d635402cf 100644
--- a/libavformat/iamf_parse.c
+++ b/libavformat/iamf_parse.c
@@ -305,10 +305,10 @@ static int update_extradata(AVCodecParameters *codecpar)
         skip_bits(&gb, 4);
         put_bits(&pb, 4, codecpar->ch_layout.nb_channels); // set channel config
         ret = put_bits_left(&pb);
-        put_bits(&pb, ret, get_bits(&gb, ret));
+        put_bits(&pb, ret, get_bits_long(&gb, ret));
         flush_put_bits(&pb);
 
-        memcpy(codecpar->extradata, buf, sizeof(buf));
+        memcpy(codecpar->extradata, buf, put_bytes_output(&pb));
         break;
     }
     case AV_CODEC_ID_FLAC: {