ffmpeg | branch: master | Zane van Iperen <z...@zanevaniperen.com> | Sun Aug 2 22:22:42 2020 +1000| [b0b87f28c34502aa8b0feae2294966760428e3ab] | committer: Zane van Iperen
avformat/argo_asf: check sample count in demuxer Signed-off-by: Zane van Iperen <z...@zanevaniperen.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b0b87f28c34502aa8b0feae2294966760428e3ab --- libavformat/argo_asf.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/libavformat/argo_asf.c b/libavformat/argo_asf.c index 3339425244..9de64dfab4 100644 --- a/libavformat/argo_asf.c +++ b/libavformat/argo_asf.c @@ -27,6 +27,7 @@ #define ASF_TAG MKTAG('A', 'S', 'F', '\0') #define ASF_FILE_HEADER_SIZE 24 #define ASF_CHUNK_HEADER_SIZE 20 +#define ASF_SAMPLE_COUNT 32 typedef struct ArgoASFFileHeader { uint32_t magic; /*< Magic Number, {'A', 'S', 'F', '\0'} */ @@ -39,7 +40,7 @@ typedef struct ArgoASFFileHeader { typedef struct ArgoASFChunkHeader { uint32_t num_blocks; /*< No. blocks in the chunk. */ - uint32_t num_samples; /*< No. samples per channel in a block. */ + uint32_t num_samples; /*< No. samples per channel in a block. Always 32. */ uint32_t unk1; /*< Unknown */ uint16_t sample_rate; /*< Sample rate. */ uint16_t unk2; /*< Unknown. */ @@ -158,6 +159,12 @@ static int argo_asf_read_header(AVFormatContext *s) argo_asf_parse_chunk_header(&asf->ckhdr, buf); + if (asf->ckhdr.num_samples != ASF_SAMPLE_COUNT) { + av_log(s, AV_LOG_ERROR, "Invalid sample count. Got %u, expected %d\n", + asf->ckhdr.num_samples, ASF_SAMPLE_COUNT); + return AVERROR_INVALIDDATA; + } + if ((asf->ckhdr.flags & ASF_CF_ALWAYS1) != ASF_CF_ALWAYS1 || (asf->ckhdr.flags & ASF_CF_ALWAYS0) != 0) { avpriv_request_sample(s, "Nonstandard flags (0x%08X)", asf->ckhdr.flags); return AVERROR_PATCHWELCOME; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
