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avcodec/tiff: Make pixel format checks tighter

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Fixes assertion failure with imgsrc001-lzma.tiff

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-08-24 01:54:45 +02:00
parent b140b51ebb
commit ab1e431288
1 changed files with 6 additions and 2 deletions
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8
libavcodec/tiff.c
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@ -490,7 +490,9 @@ static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int strid
const uint8_t *ssrc = src;
int width = ((s->width * s->bpp) + 7) >> 3;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
desc->nb_components >= 3;
if (s->planar)
width /= s->bppcount;
@ -723,7 +725,9 @@ static int init_image(TiffContext *s, ThreadFrame *frame)
if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
if((desc->flags & AV_PIX_FMT_FLAG_RGB) || desc->nb_components < 3) {
if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
!(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
desc->nb_components < 3) {
av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
return AVERROR_INVALIDDATA;
}