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videomixer: Fix background blitting when a color mode is selected with BGRA

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This commit is contained in:
Sebastian Dröge 2009-05-28 13:56:15 +02:00
parent 83fc39ccff
commit a5c30ae502
1 changed files with 8 additions and 7 deletions
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15
gst/videomixer/blend_bgra.c
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@ -111,17 +111,18 @@ gst_videomixer_fill_bgra_color (guint8 * dest, gint width, gint height,
gint red, green, blue;
gint i, j;
red = 1.164 * (colY - 16) + 1.596 * (colV - 128);
green = 1.164 * (colY - 16) - 0.813 * (colV - 128) - 0.391 * (colU - 128);
blue = 1.164 * (colY - 16) + 2.018 * (colU - 128);
red = CLAMP (1.164 * (colY - 16) + 1.596 * (colV - 128), 0, 255);
green =
CLAMP (1.164 * (colY - 16) - 0.813 * (colV - 128) - 0.391 * (colU - 128),
0, 255);
blue = CLAMP (1.164 * (colY - 16) + 2.018 * (colU - 128), 0, 255);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
*dest++ = blue;
*dest++ = green;
*dest++ = red;
*dest++ = 0xff;
*dest++ = colY;
*dest++ = colU;
*dest++ = colV;
}
}
}