| 232 | } |
| 233 | |
| 234 | void GetMinMaxYCoCg( uint8_t* colorBlock, uint8_t* minColor, uint8_t* maxColor ) |
| 235 | { |
| 236 | minColor[0] = minColor[1] = minColor[2] = minColor[3] = 255; |
| 237 | maxColor[0] = maxColor[1] = maxColor[2] = maxColor[3] = 0; |
| 238 | |
| 239 | for( int i = 0; i < 16; i++ ) |
| 240 | { |
| 241 | if( colorBlock[i * 4 + 0] < minColor[0] ) |
| 242 | { |
| 243 | minColor[0] = colorBlock[i * 4 + 0]; |
| 244 | } |
| 245 | if( colorBlock[i * 4 + 1] < minColor[1] ) |
| 246 | { |
| 247 | minColor[1] = colorBlock[i * 4 + 1]; |
| 248 | } |
| 249 | if( colorBlock[i * 4 + 2] < minColor[2] ) |
| 250 | { |
| 251 | minColor[2] = colorBlock[i * 4 + 2]; |
| 252 | } |
| 253 | if( colorBlock[i * 4 + 3] < minColor[3] ) |
| 254 | { |
| 255 | minColor[3] = colorBlock[i * 4 + 3]; |
| 256 | } |
| 257 | if( colorBlock[i * 4 + 0] > maxColor[0] ) |
| 258 | { |
| 259 | maxColor[0] = colorBlock[i * 4 + 0]; |
| 260 | } |
| 261 | if( colorBlock[i * 4 + 1] > maxColor[1] ) |
| 262 | { |
| 263 | maxColor[1] = colorBlock[i * 4 + 1]; |
| 264 | } |
| 265 | if( colorBlock[i * 4 + 2] > maxColor[2] ) |
| 266 | { |
| 267 | maxColor[2] = colorBlock[i * 4 + 2]; |
| 268 | } |
| 269 | if( colorBlock[i * 4 + 3] > maxColor[3] ) |
| 270 | { |
| 271 | maxColor[3] = colorBlock[i * 4 + 3]; |
| 272 | } |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | void ScaleYCoCg( uint8_t* colorBlock, uint8_t* minColor, uint8_t* maxColor ) |
| 277 | { |