diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/xine-utils/color.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/xine-utils/color.c b/src/xine-utils/color.c index 26d53c545..400fcc064 100644 --- a/src/xine-utils/color.c +++ b/src/xine-utils/color.c @@ -1738,3 +1738,200 @@ void init_yuv_conversion(void) { yuv411_to_yv12 = yuv411_to_yv12_c; } + +/* TJ. direct sliced rgb -> yuy2 conversion */ +typedef struct { + uint64_t r[256], g[256], b[256]; + int cm, fmt; +} rgb2yuy2_t; + +void *rgb2yuy2_alloc (int color_matrix, const char *format) { + rgb2yuy2_t *b; + float kb, kr; + float _ry, _gy, _by, _yoffs; + float _bv, _bvoffset, _ru, _ruoffset, _gu, _guoffset, _gv, _gvoffset, _burv; + int i = -1; + const char *fmts[] = {"bgr", "rgb", "bgra", "argb", "rgba"}; + + if (format) for (i = 4; i >= 0; i--) if (!strcmp (format, fmts[i])) break; + if (i < 0) return NULL; + + b = malloc (sizeof (*b)); + if (!b) return b; + + b->fmt = i; + b->cm = color_matrix; + switch ((b->cm) >> 1) { + case 1: kb = 0.0722; kr = 0.2126; break; /* ITU-R 709 */ + case 4: kb = 0.1100; kr = 0.3000; break; /* FCC */ + case 7: kb = 0.0870; kr = 0.2120; break; /* SMPTE 240 */ + default: kb = 0.1140; kr = 0.2990; /* ITU-R 601 */ + } + if (b->cm & 1) { + /* fullrange */ + _ry = 8192.0 * kr; + _gy = 8192.0 * (1.0 - kb - kr); + _by = 8192.0 * kb; + _yoffs = 8192.0 * 0.5; + _burv = 4096.0 * (127.0 / 255.0); + } else { + /* mpeg range */ + _ry = 8192.0 * (219.0 / 255.0) * kr; + _gy = 8192.0 * (219.0 / 255.0) * (1.0 - kb - kr); + _by = 8192.0 * (219.0 / 255.0) * kb; + _yoffs = 8192.0 * 16.5; + _burv = 4096.0 * (112.0 / 255.0); + } + /* Split uv offsets to make all values non negative. + This prevents carry between components. */ + _ru = _burv * (kr / (kb - 1.0)); + _gu = _burv * ((1.0 - kb - kr) / (kb - 1.0)); + _ruoffset = -255.0 * _ru; + _guoffset = 4096.0 * 128.5 - _ruoffset; + _bv = _burv * (kb / (kr - 1.0)); + _gv = _burv * ((1.0 - kb - kr) / (kr - 1.0)); + _bvoffset = -255.0 * _bv; + _gvoffset = 4096.0 * 128.5 - _bvoffset; + + for (i = 0; i < 256; i++) { + b->r[i] = ((uint64_t)(_ru * i + _ruoffset + 0.5) << 42) + | ((uint64_t)(_burv * i + 0.5) << 21) + | (uint64_t)(_ry * i + 0.5); + b->g[i] = ((uint64_t)(_gu * i + _guoffset + 0.5) << 42) + | ((uint64_t)(_gv * i + _gvoffset + 0.5) << 21) + | (uint64_t)(_gy * i + _yoffs + 0.5); + b->b[i] = ((uint64_t)(_burv * i + 0.5) << 42) + | ((uint64_t)(_bv * i + _bvoffset + 0.5) << 21) + | (uint64_t)(_by * i + 0.5); + } + + return b; +} + + +void rgb2yuy2_free (void *rgb2yuy2) { + free (rgb2yuy2); +} + +void rgb2yuy2_slice (void *rgb2yuy2, const uint8_t *in, int ipitch, uint8_t *out, int opitch, + int width, int height) { + rgb2yuy2_t *b = rgb2yuy2; + uint64_t v; + int ipad, opad; + int x, y; + + if (!b) return; + + width &= ~1; + opad = opitch - 2 * width; + + switch (b->fmt) { + case 0: /* BGR */ + ipad = ipitch - 3 * width; + for (y = height; y; y--) { + for (x = width / 2; x; x--) { + v = b->b[*in++]; + v += b->g[*in++]; + v += b->r[*in++]; + *out++ = v >> 13; /* y1 */ + v &= ~0x1fffffLL; + v += b->b[*in++]; + v += b->g[*in++]; + v += b->r[*in++]; + *out++ = v >> 55; /* u */ + *out++ = v >> 13; /* y2 */ + *out++ = v >> 34; /* v */ + } + in += ipad; + out += opad; + } + break; + case 1: /* RGB */ + ipad = ipitch - 3 * width; + for (y = height; y; y--) { + for (x = width / 2; x; x--) { + v = b->r[*in++]; + v += b->g[*in++]; + v += b->b[*in++]; + *out++ = v >> 13; /* y1 */ + v &= ~0x1fffffLL; + v += b->r[*in++]; + v += b->g[*in++]; + v += b->b[*in++]; + *out++ = v >> 55; /* u */ + *out++ = v >> 13; /* y2 */ + *out++ = v >> 34; /* v */ + } + in += ipad; + out += opad; + } + break; + case 2: /* BGRA */ + ipad = ipitch - 4 * width; + for (y = height; y; y--) { + for (x = width / 2; x; x--) { + v = b->b[*in++]; + v += b->g[*in++]; + v += b->r[*in]; + in += 2; + *out++ = v >> 13; /* y1 */ + v &= ~0x1fffffLL; + v += b->b[*in++]; + v += b->g[*in++]; + v += b->r[*in]; + in += 2; + *out++ = v >> 55; /* u */ + *out++ = v >> 13; /* y2 */ + *out++ = v >> 34; /* v */ + } + in += ipad; + out += opad; + } + break; + case 3: /* ARGB */ + ipad = ipitch - 4 * width; + for (y = height; y; y--) { + for (x = width / 2; x; x--) { + in++; + v = b->r[*in++]; + v += b->g[*in++]; + v += b->b[*in]; + in += 2; + *out++ = v >> 13; /* y1 */ + v &= ~0x1fffffLL; + v += b->r[*in++]; + v += b->g[*in++]; + v += b->b[*in++]; + *out++ = v >> 55; /* u */ + *out++ = v >> 13; /* y2 */ + *out++ = v >> 34; /* v */ + } + in += ipad; + out += opad; + } + break; + case 4: /* RGBA */ + ipad = ipitch - 4 * width; + for (y = height; y; y--) { + for (x = width / 2; x; x--) { + v = b->r[*in++]; + v += b->g[*in++]; + v += b->b[*in]; + in += 2; + *out++ = v >> 13; /* y1 */ + v &= ~0x1fffffLL; + v += b->r[*in++]; + v += b->g[*in++]; + v += b->b[*in]; + in += 2; + *out++ = v >> 55; /* u */ + *out++ = v >> 13; /* y2 */ + *out++ = v >> 34; /* v */ + } + in += ipad; + out += opad; + } + break; + } +} + |