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When BitsPerSample tag is not present in TIFF, that means file is 

monochrome, so initialize picture before decoding.
This fixes decoding monochrome files produced by lavc TIFF encoder.

Originally committed as revision 20091 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2009-09-30 05:49:18 +00:00
parent 2ed4439658
commit 53f9f9c91b
1 changed files with 13 additions and 2 deletions
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15
libavcodec/tiff.c
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@ -498,8 +498,19 @@ static int decode_frame(AVCodecContext *avctx,
}
/* now we have the data and may start decoding */
if(!p->data[0]){
av_log(s->avctx, AV_LOG_ERROR, "Picture initialization missing\n");
return -1;
s->bpp = 1;
avctx->pix_fmt = PIX_FMT_MONOBLACK;
if(s->width != s->avctx->width || s->height != s->avctx->height){
if(avcodec_check_dimensions(s->avctx, s->width, s->height))
return -1;
avcodec_set_dimensions(s->avctx, s->width, s->height);
}
if(s->picture.data[0])
s->avctx->release_buffer(s->avctx, &s->picture);
if(s->avctx->get_buffer(s->avctx, &s->picture) < 0){
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
}
if(s->strips == 1 && !s->stripsize){
av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");