ffmpeg | branch: release/4.2 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Mar 8 22:11:59 2023 +0100| [545b76d7b12a58702c7ee6ef53a5bec9e8dc5914] | committer: Michael Niedermayer
avcodec/cscd: Check for CamStudio Lossless Codec 1.0 behavior in end check of LZO files Alternatively the check could be simply made more tolerant Fixes: Ticket10227 Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit d2a0464fc2dd6f79571a66e6c7a8168323168e46) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=545b76d7b12a58702c7ee6ef53a5bec9e8dc5914 --- libavcodec/cscd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c index e2d868353f..d5a20ce04b 100644 --- a/libavcodec/cscd.c +++ b/libavcodec/cscd.c @@ -84,7 +84,10 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, switch ((buf[0] >> 1) & 7) { case 0: { // lzo compression int outlen = c->decomp_size, inlen = buf_size - 2; - if (av_lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen) || outlen) { + int bpp = avctx->bits_per_coded_sample / 8; + int bugdelta = FFALIGN(avctx->width * bpp, 4) * avctx->height + - (avctx->width & ~3) * bpp * avctx->height; + if (av_lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen) || (outlen && outlen != bugdelta)) { av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n"); return AVERROR_INVALIDDATA; } _______________________________________________ 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".
