gl/mesa/src/gallium/auxiliary/util/u_format_yuv.h

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  27
  28
  29 /**
  30  * @file
  31  * YUV colorspace conversion.
  32  *
  33  * @author Brian Paul <brianp@vmware.com>
  34  * @author Michal Krol <michal@vmware.com>
  35  * @author Jose Fonseca <jfonseca@vmware.com>
  36  *
  37  * See also:
  38  * - http://www.fourcc.org/fccyvrgb.php
  39  * - http://msdn.microsoft.com/en-us/library/ms893078
  40  * - http://en.wikipedia.org/wiki/YUV
  41  */
  42
  43
  44 #ifndef U_FORMAT_YUV_H_
  45 #define U_FORMAT_YUV_H_
  46
  47
  48 #include "pipe/p_compiler.h"
  49 #include "u_math.h"
  50
  51
  52 /*
  53  * TODO: Ensure we use consistent and right floating formulas, with enough
  54  * precision in the coefficients.
  55  */
  56
  57 static INLINE void
  58 util_format_rgb_float_to_yuv(float r, float g, float b,
  59                              uint8_t *y, uint8_t *u, uint8_t *v)
  60 {
  61    const float _r = CLAMP(r, 0.0f, 1.0f);
  62    const float _g = CLAMP(g, 0.0f, 1.0f);
  63    const float _b = CLAMP(b, 0.0f, 1.0f);
  64
  65    const float scale = 255.0f;
  66
  67    const int _y = scale * ( (0.257f * _r) + (0.504f * _g) + (0.098f * _b));
  68    const int _u = scale * (-(0.148f * _r) - (0.291f * _g) + (0.439f * _b));
  69    const int _v = scale * ( (0.439f * _r) - (0.368f * _g) - (0.071f * _b));
  70
  71    *y = _y + 16;
  72    *u = _u + 128;
  73    *v = _v + 128;
  74 }
  75
  76
  77 static INLINE void
  78 util_format_yuv_to_rgb_float(uint8_t y, uint8_t u, uint8_t v,
  79                              float *r, float *g, float *b)
  80 {
  81    const int _y = y - 16;
  82    const int _u = u - 128;
  83    const int _v = v - 128;
  84
  85    const float y_factor = 255.0f / 219.0f;
  86
  87    const float scale = 1.0f / 255.0f;
  88
  89    *r = scale * (y_factor * _y               + 1.596f * _v);
  90    *g = scale * (y_factor * _y - 0.391f * _u - 0.813f * _v);
  91    *b = scale * (y_factor * _y + 2.018f * _u              );
  92 }
  93
  94
  95 static INLINE void
  96 util_format_rgb_8unorm_to_yuv(uint8_t r, uint8_t g, uint8_t b,
  97                               uint8_t *y, uint8_t *u, uint8_t *v)
  98 {
  99    *y = ((  66 * r + 129 * g +  25 * b + 128) >> 8) +  16;
 100    *u = (( -38 * r -  74 * g + 112 * b + 128) >> 8) + 128;
 101    *v = (( 112 * r -  94 * g -  18 * b + 128) >> 8) + 128;
 102 }
 103
 104
 105 static INLINE void
 106 util_format_yuv_to_rgb_8unorm(uint8_t y, uint8_t u, uint8_t v,
 107                               uint8_t *r, uint8_t *g, uint8_t *b)
 108 {
 109    const int _y = y - 16;
 110    const int _u = u - 128;
 111    const int _v = v - 128;
 112
 113    const int _r = (298 * _y            + 409 * _v + 128) >> 8;
 114    const int _g = (298 * _y - 100 * _u - 208 * _v + 128) >> 8;
 115    const int _b = (298 * _y + 516 * _u            + 128) >> 8;
 116
 117    *r = CLAMP(_r, 0, 255);
 118    *g = CLAMP(_g, 0, 255);
 119    *b = CLAMP(_b, 0, 255);
 120 }
 121
 122
 123
 124 void
 125 util_format_uyvy_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 126                               const uint8_t *src_row, unsigned src_stride,
 127                               unsigned width, unsigned height);
 128
 129 void
 130 util_format_uyvy_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 131                                const uint8_t *src_row, unsigned src_stride,
 132                                unsigned width, unsigned height);
 133
 134 void
 135 util_format_uyvy_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 136                             const float *src_row, unsigned src_stride,
 137                             unsigned width, unsigned height);
 138
 139 void
 140 util_format_uyvy_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 141                              const uint8_t *src_row, unsigned src_stride,
 142                              unsigned width, unsigned height);
 143
 144 void
 145 util_format_uyvy_fetch_rgba_float(float *dst, const uint8_t *src,
 146                              unsigned i, unsigned j);
 147
 148 void
 149 util_format_yuyv_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 150                               const uint8_t *src_row, unsigned src_stride,
 151                               unsigned width, unsigned height);
 152
 153 void
 154 util_format_yuyv_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 155                                const uint8_t *src_row, unsigned src_stride,
 156                                unsigned width, unsigned height);
 157
 158 void
 159 util_format_yuyv_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 160                             const float *src_row, unsigned src_stride,
 161                             unsigned width, unsigned height);
 162
 163 void
 164 util_format_yuyv_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 165                              const uint8_t *src_row, unsigned src_stride,
 166                              unsigned width, unsigned height);
 167
 168 void
 169 util_format_yuyv_fetch_rgba_float(float *dst, const uint8_t *src,
 170                              unsigned i, unsigned j);
 171
 172 /* XXX: Stubbed for now */
 173 void
 174 util_format_yv12_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 175                              const uint8_t *src_row, unsigned src_stride,
 176                              unsigned width, unsigned height);
 177 void
 178 util_format_yv12_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 179                              const uint8_t *src_row, unsigned src_stride,
 180                              unsigned width, unsigned height);
 181 void
 182 util_format_yv12_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 183                              const uint8_t *src_row, unsigned src_stride,
 184                              unsigned width, unsigned height);
 185 void
 186 util_format_yv12_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 187                              const float *src_row, unsigned src_stride,
 188                              unsigned width, unsigned height);
 189 void
 190 util_format_yv12_fetch_rgba_float(float *dst, const uint8_t *src,
 191                              unsigned i, unsigned j);
 192 void
 193 util_format_yv16_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 194                              const uint8_t *src_row, unsigned src_stride,
 195                              unsigned width, unsigned height);
 196 void
 197 util_format_yv16_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 198                              const uint8_t *src_row, unsigned src_stride,
 199                              unsigned width, unsigned height);
 200 void
 201 util_format_yv16_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 202                              const uint8_t *src_row, unsigned src_stride,
 203                              unsigned width, unsigned height);
 204 void
 205 util_format_yv16_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 206                              const float *src_row, unsigned src_stride,
 207                              unsigned width, unsigned height);
 208 void
 209 util_format_yv16_fetch_rgba_float(float *dst, const uint8_t *src,
 210                              unsigned i, unsigned j);
 211 void
 212 util_format_iyuv_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 213                              const uint8_t *src_row, unsigned src_stride,
 214                              unsigned width, unsigned height);
 215 void
 216 util_format_iyuv_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 217                              const uint8_t *src_row, unsigned src_stride,
 218                              unsigned width, unsigned height);
 219 void
 220 util_format_iyuv_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 221                              const uint8_t *src_row, unsigned src_stride,
 222                              unsigned width, unsigned height);
 223 void
 224 util_format_iyuv_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 225                              const float *src_row, unsigned src_stride,
 226                              unsigned width, unsigned height);
 227 void
 228 util_format_iyuv_fetch_rgba_float(float *dst, const uint8_t *src,
 229                              unsigned i, unsigned j);
 230 void
 231 util_format_nv12_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 232                              const uint8_t *src_row, unsigned src_stride,
 233                              unsigned width, unsigned height);
 234 void
 235 util_format_nv12_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 236                              const uint8_t *src_row, unsigned src_stride,
 237                              unsigned width, unsigned height);
 238 void
 239 util_format_nv12_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 240                              const uint8_t *src_row, unsigned src_stride,
 241                              unsigned width, unsigned height);
 242 void
 243 util_format_nv12_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 244                              const float *src_row, unsigned src_stride,
 245                              unsigned width, unsigned height);
 246 void
 247 util_format_nv12_fetch_rgba_float(float *dst, const uint8_t *src,
 248                              unsigned i, unsigned j);
 249 void
 250 util_format_nv21_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 251                              const uint8_t *src_row, unsigned src_stride,
 252                              unsigned width, unsigned height);
 253 void
 254 util_format_nv21_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 255                              const uint8_t *src_row, unsigned src_stride,
 256                              unsigned width, unsigned height);
 257 void
 258 util_format_nv21_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 259                              const uint8_t *src_row, unsigned src_stride,
 260                              unsigned width, unsigned height);
 261 void
 262 util_format_nv21_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 263                              const float *src_row, unsigned src_stride,
 264                              unsigned width, unsigned height);
 265 void
 266 util_format_nv21_fetch_rgba_float(float *dst, const uint8_t *src,
 267                              unsigned i, unsigned j);
 268 void
 269 util_format_r8g8_b8g8_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 270                                          const uint8_t *src_row, unsigned src_stride,
 271                                          unsigned width, unsigned height);
 272
 273 void
 274 util_format_r8g8_b8g8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 275                                           const uint8_t *src_row, unsigned src_stride,
 276                                           unsigned width, unsigned height);
 277
 278 void
 279 util_format_r8g8_b8g8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 280                                        const float *src_row, unsigned src_stride,
 281                                        unsigned width, unsigned height);
 282
 283 void
 284 util_format_r8g8_b8g8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 285                                         const uint8_t *src_row, unsigned src_stride,
 286                                         unsigned width, unsigned height);
 287
 288 void
 289 util_format_r8g8_b8g8_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
 290                                         unsigned i, unsigned j);
 291
 292 void
 293 util_format_g8r8_g8b8_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 294                                          const uint8_t *src_row, unsigned src_stride,
 295                                          unsigned width, unsigned height);
 296
 297 void
 298 util_format_g8r8_g8b8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 299                                           const uint8_t *src_row, unsigned src_stride,
 300                                           unsigned width, unsigned height);
 301
 302 void
 303 util_format_g8r8_g8b8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 304                                        const float *src_row, unsigned src_stride,
 305                                        unsigned width, unsigned height);
 306
 307 void
 308 util_format_g8r8_g8b8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 309                                         const uint8_t *src_row, unsigned src_stride,
 310                                         unsigned width, unsigned height);
 311
 312 void
 313 util_format_g8r8_g8b8_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
 314                                         unsigned i, unsigned j);
 315
 316
 317
 318 #endif /* U_FORMAT_YUV_H_ */