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Adds conversion when color shifts are BGRA

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This commit is contained in:
twinaphex 2016-05-10 06:02:00 +02:00
parent 7462988f33
commit f931ce7606
1 changed files with 22 additions and 15 deletions
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37
libretro-common/formats/jpeg/rjpeg.c
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@ -2361,6 +2361,24 @@ static int stbi__jpeg_test(stbi__context *s)
}
#endif
static INLINE void video_frame_convert_rgba_to_bgra(
const void *src_data,
void *dst_data,
unsigned width)
{
unsigned x;
uint8_t *dst = (uint8_t*)dst_data;
const uint8_t *src = (const uint8_t*)src_data;
for (x = 0; x < width; x++, dst += 4, src += 4)
{
dst[3] = src[3];
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
}
}
bool rjpeg_image_load(uint8_t *_buf, void *data, size_t size,
unsigned a_shift, unsigned r_shift,
unsigned g_shift, unsigned b_shift)
@ -2369,25 +2387,14 @@ bool rjpeg_image_load(uint8_t *_buf, void *data, size_t size,
int x, y, comp;
struct texture_image *out_img = (struct texture_image*)data;
out_img->pixels = stbi_load_from_memory(_buf, size, &x, &y, &comp, 4);
out_img->pixels = (uint32_t*)stbi_load_from_memory(_buf, size, &x, &y, &comp, 4);
out_img->width = x;
out_img->height = y;
#if 0
for (i = 0; i < (x * y); i++)
{
uint32_t r = (_buf[i] & 0xff00ff00);
uint32_t g = ((_buf[i] << 16) & 0x00ff0000);
uint32_t b = ((_buf[i] >> 16) & 0xff);
if (r_shift == 0 && b_shift == 16)
out_img->pixels[i] = _buf[i];
else
out_img->pixels[i] = r | g | b;
//out_img->pixels[i] = (r << r_shift) | (g << g_shift) || (b << b_shift);
}
#endif
if (r_shift == 0 && b_shift == 16) { } /* RGBA, doesn't need conversion */
else
video_frame_convert_rgba_to_bgra(_buf, out_img->pixels, x);
return true;
}