[FFmpeg-cvslog] swscale/swscale_unscaled: Fix rounding difference with RGBA output between little and big endian

Michael Niedermayer git at videolan.org
Sat Jul 18 20:46:00 CEST 2015


ffmpeg | branch: release/2.7 | Michael Niedermayer <michaelni at gmx.at> | Mon Jun 29 13:51:43 2015 +0200| [d1f8eaf3d2b0b845b7b50e3a82267e2acd7ada02] | committer: Michael Niedermayer

swscale/swscale_unscaled: Fix rounding difference with RGBA output between little and big endian

Fixes fate/dds-rgb16 on big endian

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit f6ab967eae497733f6adc12b30075980fd6eea98)

Conflicts:

	tests/ref/fate/dds-rgb16

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d1f8eaf3d2b0b845b7b50e3a82267e2acd7ada02
---

 libswscale/swscale_unscaled.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c
index b426fa1..1dc42c8 100644
--- a/libswscale/swscale_unscaled.c
+++ b/libswscale/swscale_unscaled.c
@@ -1243,6 +1243,11 @@ static rgbConvFn findRgbConvFn(SwsContext *c)
     if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) && !isRGBA32(srcFormat) && ALT32_CORR<0)
         return NULL;
 
+    // Maintain symmetry between endianness
+    if (c->flags & SWS_BITEXACT)
+        if ((dstFormat == AV_PIX_FMT_RGB32   || dstFormat == AV_PIX_FMT_BGR32  ) && !isRGBA32(srcFormat) && ALT32_CORR>0)
+            return NULL;
+
     return conv;
 }
 



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