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minor changes

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This commit is contained in:
kub 2019-03-25 19:31:32 +01:00
parent b1a047c926
commit 32feba7458
9 changed files with 151 additions and 78 deletions
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9
platform/common/plat_sdl.c
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@ -89,6 +89,7 @@ static const struct in_pdata in_sdl_platform_data = {
/* YUV stuff */
static int yuv_ry[32], yuv_gy[32], yuv_by[32];
static unsigned char yuv_u[32 * 2], yuv_v[32 * 2];
static int yuv_y[256];
void bgr_to_uyvy_init(void)
{
@ -119,6 +120,10 @@ void bgr_to_uyvy_init(void)
v = 255;
yuv_v[i + 32] = v;
}
// valid Y range seems to be 16..235
for (i = 0; i < 256; i++) {
yuv_y[i] = 16 + 219 * i / 32;
}
}
void rgb565_to_uyvy(void *d, const void *s, int pixels)
@ -143,8 +148,8 @@ void rgb565_to_uyvy(void *d, const void *s, int pixels)
u = yu[b0 - y0];
v = yv[r0 - y0];
// valid Y range seems to be 16..235
y0 = 16 + 219 * y0 / 31;
y1 = 16 + 219 * y1 / 31;
y0 = yuv_y[y0];
y1 = yuv_y[y1];
*dst = (y1 << 24) | (v << 16) | (y0 << 8) | u;
}