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avcodec/rscc: fix decoding of some iscc files

This commit is contained in:
Paul B Mahol 2018-09-08 17:27:40 +02:00
parent a5278b672a
commit 068412f2e8
1 changed files with 12 additions and 2 deletions
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14
libavcodec/rscc.c
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@ -85,8 +85,18 @@ static av_cold int rscc_init(AVCodecContext *avctx)
/* Get pixel format and the size of the pixel */
if (avctx->codec_tag == MKTAG('I', 'S', 'C', 'C')) {
avctx->pix_fmt = AV_PIX_FMT_BGRA;
ctx->component_size = 4;
if (avctx->extradata && avctx->extradata_size == 4) {
if ((avctx->extradata[0] >> 1) & 1) {
avctx->pix_fmt = AV_PIX_FMT_BGRA;
ctx->component_size = 4;
} else {
avctx->pix_fmt = AV_PIX_FMT_BGR24;
ctx->component_size = 3;
}
} else {
avctx->pix_fmt = AV_PIX_FMT_BGRA;
ctx->component_size = 4;
}
} else if (avctx->codec_tag == MKTAG('R', 'S', 'C', 'C')) {
ctx->component_size = avctx->bits_per_coded_sample / 8;
switch (avctx->bits_per_coded_sample) {