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pngdec: set correct range

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AV_PIX_FMT_GRAY8/16 are considered YUV formats, and the color_range is
not set - so the API user will have to assume limitted range. (Unless
the API user adds a special-case for the PNG decoder.)

Just export the correct range - full range.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
wm4 2015-05-07 23:37:18 +02:00 committed by Michael Niedermayer
parent 3b12335395
commit 72e7553125
3 changed files with 4 additions and 2 deletions
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2
libavcodec/pngdec.c
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@ -633,6 +633,8 @@ static int decode_idat_chunk(AVCodecContext *avctx, PNGDecContext *s,
return AVERROR_INVALIDDATA;
}
avctx->color_range = AVCOL_RANGE_JPEG;
if ((ret = ff_thread_get_buffer(avctx, &s->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
return ret;
ff_thread_finish_setup(avctx);

2
tests/ref/fate/png-ya16
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@ -1,2 +1,2 @@
#tb 0: 1/25
0, 0, 0, 1, 49152, 0x93ce1cd5
0, 0, 0, 1, 49152, 0x0801ce78

2
tests/ref/fate/png-ya8
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@ -1,2 +1,2 @@
#tb 0: 1/25
0, 0, 0, 1, 49152, 0xed73bf03
0, 0, 0, 1, 49152, 0x5a1481f8