From: wm4 <[email protected]>
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.
---
libavcodec/pngdec.c | 2 ++
tests/ref/fate/png-ya16 | 2 +-
tests/ref/fate/png-ya8 | 2 +-
3 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 1f8a77b..72d75fb 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -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);
diff --git a/tests/ref/fate/png-ya16 b/tests/ref/fate/png-ya16
index 07906c4..dffdaf7 100644
--- a/tests/ref/fate/png-ya16
+++ b/tests/ref/fate/png-ya16
@@ -1,2 +1,2 @@
#tb 0: 1/25
-0, 0, 0, 1, 49152, 0x93ce1cd5
+0, 0, 0, 1, 49152, 0x0801ce78
diff --git a/tests/ref/fate/png-ya8 b/tests/ref/fate/png-ya8
index 3a5c99d..1318af8 100644
--- a/tests/ref/fate/png-ya8
+++ b/tests/ref/fate/png-ya8
@@ -1,2 +1,2 @@
#tb 0: 1/25
-0, 0, 0, 1, 49152, 0xed73bf03
+0, 0, 0, 1, 49152, 0x5a1481f8
--
1.9.5 (Apple Git-50.3)
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