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png: support reading gray+alpha at 16 bits

This commit is contained in:
Vittorio Giovara 2014-07-20 22:54:27 +01:00
parent 2257165bff
commit e64f0bf2d2
1 changed files with 3 additions and 0 deletions
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3
libavcodec/pngdec.c
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@ -500,6 +500,9 @@ static int decode_frame(AVCodecContext *avctx,
} else if (s->bit_depth == 8 &&
s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
avctx->pix_fmt = AV_PIX_FMT_YA8;
} else if (s->bit_depth == 16 &&
s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
avctx->pix_fmt = AV_PIX_FMT_YA16BE;
} else {
goto fail;
}