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Fix some 1bit bmp samples, they are palletised.

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Fixes ticket #632.
This commit is contained in:
Carl Eugen Hoyos 2011-11-10 23:07:27 +01:00
parent eb4fc6acfe
commit 0e609d7418
1 changed files with 18 additions and 4 deletions
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22
libavcodec/bmp.c
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@ -171,17 +171,15 @@ static int bmp_decode_frame(AVCodecContext *avctx,
else
avctx->pix_fmt = PIX_FMT_GRAY8;
break;
case 1:
case 4:
if(hsize - ihsize - 14 > 0){
avctx->pix_fmt = PIX_FMT_PAL8;
}else{
av_log(avctx, AV_LOG_ERROR, "Unknown palette for 16-colour BMP\n");
av_log(avctx, AV_LOG_ERROR, "Unknown palette for %d-colour BMP\n", 1<<depth);
return -1;
}
break;
case 1:
avctx->pix_fmt = PIX_FMT_MONOBLACK;
break;
default:
av_log(avctx, AV_LOG_ERROR, "depth %d not supported\n", depth);
return -1;
@ -265,6 +263,22 @@ static int bmp_decode_frame(AVCodecContext *avctx,
}else{
switch(depth){
case 1:
for(i = 0; i < avctx->height; i++){
int j;
for(j = 0; j < n; j++){
ptr[j*8+0] = buf[j] >> 7;
ptr[j*8+1] = (buf[j] >> 6) & 1;
ptr[j*8+2] = (buf[j] >> 5) & 1;
ptr[j*8+3] = (buf[j] >> 4) & 1;
ptr[j*8+4] = (buf[j] >> 3) & 1;
ptr[j*8+5] = (buf[j] >> 2) & 1;
ptr[j*8+6] = (buf[j] >> 1) & 1;
ptr[j*8+7] = buf[j] & 1;
}
buf += n;
ptr += linesize;
}
break;
case 8:
case 24:
for(i = 0; i < avctx->height; i++){