diff options
Diffstat (limited to 'thirdparty/libwebp/src/enc/picture_csp_enc.c')
| -rw-r--r-- | thirdparty/libwebp/src/enc/picture_csp_enc.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/thirdparty/libwebp/src/enc/picture_csp_enc.c b/thirdparty/libwebp/src/enc/picture_csp_enc.c index 02d9df76d5..718e014ed2 100644 --- a/thirdparty/libwebp/src/enc/picture_csp_enc.c +++ b/thirdparty/libwebp/src/enc/picture_csp_enc.c @@ -29,11 +29,15 @@ #define USE_INVERSE_ALPHA_TABLE #ifdef WORDS_BIGENDIAN -#define ALPHA_OFFSET 0 // uint32_t 0xff000000 is 0xff,00,00,00 in memory +// uint32_t 0xff000000 is 0xff,00,00,00 in memory +#define CHANNEL_OFFSET(i) (i) #else -#define ALPHA_OFFSET 3 // uint32_t 0xff000000 is 0x00,00,00,ff in memory +// uint32_t 0xff000000 is 0x00,00,00,ff in memory +#define CHANNEL_OFFSET(i) (3-(i)) #endif +#define ALPHA_OFFSET CHANNEL_OFFSET(0) + //------------------------------------------------------------------------------ // Detection of non-trivial transparency @@ -997,10 +1001,10 @@ static int PictureARGBToYUVA(WebPPicture* picture, WebPEncCSP colorspace, return WebPEncodingSetError(picture, VP8_ENC_ERROR_INVALID_CONFIGURATION); } else { const uint8_t* const argb = (const uint8_t*)picture->argb; - const uint8_t* const a = argb + (0 ^ ALPHA_OFFSET); - const uint8_t* const r = argb + (1 ^ ALPHA_OFFSET); - const uint8_t* const g = argb + (2 ^ ALPHA_OFFSET); - const uint8_t* const b = argb + (3 ^ ALPHA_OFFSET); + const uint8_t* const a = argb + CHANNEL_OFFSET(0); + const uint8_t* const r = argb + CHANNEL_OFFSET(1); + const uint8_t* const g = argb + CHANNEL_OFFSET(2); + const uint8_t* const b = argb + CHANNEL_OFFSET(3); picture->colorspace = WEBP_YUV420; return ImportYUVAFromRGBA(r, g, b, a, 4, 4 * picture->argb_stride, @@ -1050,7 +1054,7 @@ int WebPPictureYUVAToARGB(WebPPicture* picture) { const int height = picture->height; const int argb_stride = 4 * picture->argb_stride; uint8_t* dst = (uint8_t*)picture->argb; - const uint8_t *cur_u = picture->u, *cur_v = picture->v, *cur_y = picture->y; + const uint8_t* cur_u = picture->u, *cur_v = picture->v, *cur_y = picture->y; WebPUpsampleLinePairFunc upsample = WebPGetLinePairConverter(ALPHA_OFFSET > 0); |