ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Sep 10 16:27:02 2023 +0200| [f3414295fc6027cfdb09add753d3680752321a61] | committer: Michael Niedermayer
avcodec/cscd: Fix "CamStudio Lossless Codec 1.0" gzip files Fixes: tickets/10241/cscd_1_0_306_306_gzip.avi Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit ab7d38f970674e6765b5e1adb911c1763b9ce806) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f3414295fc6027cfdb09add753d3680752321a61 --- libavcodec/cscd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c index 1ccc402109..9230f9edf3 100644 --- a/libavcodec/cscd.c +++ b/libavcodec/cscd.c @@ -71,6 +71,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, int buf_size = avpkt->size; CamStudioContext *c = avctx->priv_data; int ret; + int bpp = avctx->bits_per_coded_sample / 8; + int bugdelta = FFALIGN(avctx->width * bpp, 4) * avctx->height + - (avctx->width & ~3) * bpp * avctx->height; if (buf_size < 2) { av_log(avctx, AV_LOG_ERROR, "coded frame too small\n"); @@ -84,9 +87,6 @@ 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; - 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; @@ -96,7 +96,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, case 1: { // zlib compression #if CONFIG_ZLIB unsigned long dlen = c->decomp_size; - if (uncompress(c->decomp_buf, &dlen, &buf[2], buf_size - 2) != Z_OK || dlen != c->decomp_size) { + if (uncompress(c->decomp_buf, &dlen, &buf[2], buf_size - 2) != Z_OK || (dlen != c->decomp_size && dlen != c->decomp_size - bugdelta)) { av_log(avctx, AV_LOG_ERROR, "error during zlib 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".
