swscale: Use alpha from the right row in yuva2rgba_c

Every other pixel had the alpha channel taken from the wrong
row.

This fixes bug 504.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
pull/18/head
Martin Storsjö 12 years ago
parent 6c5eac9a60
commit 6e293d111f
  1. 12
      libswscale/yuv2rgb.c

@ -264,16 +264,16 @@ YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
PUTRGBA(dst_2, py_2, pa_2, 0, 24);
LOADCHROMA(1);
PUTRGBA(dst_2, py_2, pa_1, 1, 24);
PUTRGBA(dst_1, py_1, pa_2, 1, 24);
PUTRGBA(dst_2, py_2, pa_2, 1, 24);
PUTRGBA(dst_1, py_1, pa_1, 1, 24);
LOADCHROMA(2);
PUTRGBA(dst_1, py_1, pa_1, 2, 24);
PUTRGBA(dst_2, py_2, pa_2, 2, 24);
LOADCHROMA(3);
PUTRGBA(dst_2, py_2, pa_1, 3, 24);
PUTRGBA(dst_1, py_1, pa_2, 3, 24);
PUTRGBA(dst_2, py_2, pa_2, 3, 24);
PUTRGBA(dst_1, py_1, pa_1, 3, 24);
pa_1 += 8;
pa_2 += 8;
ENDYUV2RGBLINE(8, 0)
@ -282,8 +282,8 @@ ENDYUV2RGBLINE(8, 0)
PUTRGBA(dst_2, py_2, pa_2, 0, 24);
LOADCHROMA(1);
PUTRGBA(dst_2, py_2, pa_1, 1, 24);
PUTRGBA(dst_1, py_1, pa_2, 1, 24);
PUTRGBA(dst_2, py_2, pa_2, 1, 24);
PUTRGBA(dst_1, py_1, pa_1, 1, 24);
pa_1 += 4;
pa_2 += 4;
ENDYUV2RGBLINE(8, 1)

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