diff options
| author | Carl Hetherington <cth@carlh.net> | 2012-10-08 15:37:04 +0100 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2012-10-08 15:37:04 +0100 |
| commit | 5f02ea34590cd6b796a6eaa55211abf5b36fd329 (patch) | |
| tree | 2bf00f93ab0a73895f7aab6182df8f95d3373a4d /src/lib/util.h | |
| parent | a78f48e77516d64f568cd6ea7c35b7095264b78c (diff) | |
Hacks.
Diffstat (limited to 'src/lib/util.h')
| -rw-r--r-- | src/lib/util.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/lib/util.h b/src/lib/util.h index 3eac06e97..ed13cd43c 100644 --- a/src/lib/util.h +++ b/src/lib/util.h @@ -165,4 +165,20 @@ private: int _buffer_data; }; +#define SCALEBITS 10 +#define ONE_HALF (1 << (SCALEBITS - 1)) +#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5)) + +#define RGB_TO_Y_CCIR(r, g, b) \ +((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \ + FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS) + +#define RGB_TO_U_CCIR(r1, g1, b1, shift)\ +(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \ + FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128) + +#define RGB_TO_V_CCIR(r1, g1, b1, shift)\ +(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \ + FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128) + #endif |