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Merge commit '3d0752d82f8eaa326cff306ae50b0186a5b4d304' into release/2.4

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* commit '3d0752d82f8eaa326cff306ae50b0186a5b4d304':
  xsub: Support DXSA subtitles

Conflicts:
	libavcodec/xsubdec.c

See: d6f910ea47
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-01-17 23:01:17 +01:00
commit 3cc8822c93
1 changed files with 10 additions and 4 deletions
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14
libavcodec/xsubdec.c
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@ -59,7 +59,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
int has_alpha = avctx->codec_tag == MKTAG('D','X','S','A');
// check that at least header fits
if (buf_size < 27 + 7 * 2 + 4 * 3) {
if (buf_size < 27 + 7 * 2 + 4 * (3 + has_alpha)) {
av_log(avctx, AV_LOG_ERROR, "coded frame size %d too small\n", buf_size);
return -1;
}
@ -106,9 +106,15 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
// read palette
for (i = 0; i < sub->rects[0]->nb_colors; i++)
((uint32_t*)sub->rects[0]->pict.data[1])[i] = bytestream_get_be24(&buf);
// make all except background (first entry) non-transparent
for (i = 0; i < sub->rects[0]->nb_colors; i++)
((uint32_t*)sub->rects[0]->pict.data[1])[i] |= (has_alpha ? *buf++ : (i ? 0xff : 0)) << 24;
if (!has_alpha) {
// make all except background (first entry) non-transparent
for (i = 1; i < sub->rects[0]->nb_colors; i++)
((uint32_t *)sub->rects[0]->pict.data[1])[i] |= 0xff000000;
} else {
for (i = 0; i < sub->rects[0]->nb_colors; i++)
((uint32_t *)sub->rects[0]->pict.data[1])[i] |= *buf++ << 24;
}
// process RLE-compressed data
init_get_bits(&gb, buf, (buf_end - buf) * 8);