/************************************************************************** * * Copyright 2010 VMware, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * **************************************************************************/ /** * @file * YUV colorspace conversion. * * @author Brian Paul * @author Michal Krol * @author Jose Fonseca * * See also: * - http://www.fourcc.org/fccyvrgb.php * - http://msdn.microsoft.com/en-us/library/ms893078 * - http://en.wikipedia.org/wiki/YUV */ #ifndef U_FORMAT_YUV_H_ #define U_FORMAT_YUV_H_ #include "pipe/p_compiler.h" #include "util/u_math.h" /* * TODO: Ensure we use consistent and right floating formulas, with enough * precision in the coefficients. */ static inline void util_format_rgb_float_to_yuv(float r, float g, float b, uint8_t *y, uint8_t *u, uint8_t *v) { const float _r = SATURATE(r); const float _g = SATURATE(g); const float _b = SATURATE(b); const float scale = 255.0f; const int _y = scale * ( (0.257f * _r) + (0.504f * _g) + (0.098f * _b)); const int _u = scale * (-(0.148f * _r) - (0.291f * _g) + (0.439f * _b)); const int _v = scale * ( (0.439f * _r) - (0.368f * _g) - (0.071f * _b)); *y = _y + 16; *u = _u + 128; *v = _v + 128; } static inline void util_format_yuv_to_rgb_float(uint8_t y, uint8_t u, uint8_t v, float *r, float *g, float *b) { const int _y = y - 16; const int _u = u - 128; const int _v = v - 128; const float y_factor = 255.0f / 219.0f; const float scale = 1.0f / 255.0f; *r = scale * (y_factor * _y + 1.596f * _v); *g = scale * (y_factor * _y - 0.391f * _u - 0.813f * _v); *b = scale * (y_factor * _y + 2.018f * _u ); } static inline void util_format_rgb_8unorm_to_yuv(uint8_t r, uint8_t g, uint8_t b, uint8_t *y, uint8_t *u, uint8_t *v) { *y = (( 66 * r + 129 * g + 25 * b + 128) >> 8) + 16; *u = (( -38 * r - 74 * g + 112 * b + 128) >> 8) + 128; *v = (( 112 * r - 94 * g - 18 * b + 128) >> 8) + 128; } static inline void util_format_yuv_to_rgb_8unorm(uint8_t y, uint8_t u, uint8_t v, uint8_t *r, uint8_t *g, uint8_t *b) { const int _y = y - 16; const int _u = u - 128; const int _v = v - 128; const int _r = (298 * _y + 409 * _v + 128) >> 8; const int _g = (298 * _y - 100 * _u - 208 * _v + 128) >> 8; const int _b = (298 * _y + 516 * _u + 128) >> 8; *r = CLAMP(_r, 0, 255); *g = CLAMP(_g, 0, 255); *b = CLAMP(_b, 0, 255); } void util_format_uyvy_unpack_rgba_float(void *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_uyvy_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_uyvy_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_uyvy_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_uyvy_fetch_rgba(void *dst, const uint8_t *src, unsigned i, unsigned j); void util_format_yuyv_unpack_rgba_float(void *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_yuyv_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_yuyv_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_yuyv_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_yuyv_fetch_rgba(void *dst, const uint8_t *src, unsigned i, unsigned j); void util_format_r8g8_b8g8_unorm_unpack_rgba_float(void *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_r8g8_b8g8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_r8g8_b8g8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_r8g8_b8g8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_r8g8_b8g8_unorm_fetch_rgba(void *dst, const uint8_t *src, unsigned i, unsigned j); void util_format_g8r8_g8b8_unorm_unpack_rgba_float(void *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_g8r8_g8b8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_g8r8_g8b8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_g8r8_g8b8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height); void util_format_g8r8_g8b8_unorm_fetch_rgba(void *dst, const uint8_t *src, unsigned i, unsigned j); #endif /* U_FORMAT_YUV_H_ */