/*****************************************************************************\ Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. This file is licensed under the Snes9x License. For further information, consult the LICENSE file in the root directory. \*****************************************************************************/ #ifndef _PIXFORM_H_ #define _PIXFORM_H_ /* RGB565 format */ #define BUILD_PIXEL_RGB565(R, G, B) (((int)(R) << 11) | ((int)(G) << 6) | (((int)(G) & 0x10) << 1) | (int)(B)) #define BUILD_PIXEL2_RGB565(R, G, B) (((int)(R) << 11) | ((int)(G) << 5) | (int)(B)) #define DECOMPOSE_PIXEL_RGB565(PIX, R, G, B) \ { \ (R) = (PIX) >> 11; \ (G) = ((PIX) >> 6) & 0x1f; \ (B) = (PIX)&0x1f; \ } #define SPARE_RGB_BIT_MASK_RGB565 (1 << 5) #define MAX_RED_RGB565 31 #define MAX_GREEN_RGB565 63 #define MAX_BLUE_RGB565 31 #define RED_SHIFT_BITS_RGB565 11 #define GREEN_SHIFT_BITS_RGB565 6 #define RED_LOW_BIT_MASK_RGB565 0x0800 #define GREEN_LOW_BIT_MASK_RGB565 0x0020 #define BLUE_LOW_BIT_MASK_RGB565 0x0001 #define RED_HI_BIT_MASK_RGB565 0x8000 #define GREEN_HI_BIT_MASK_RGB565 0x0400 #define BLUE_HI_BIT_MASK_RGB565 0x0010 #define FIRST_COLOR_MASK_RGB565 0xF800 #define SECOND_COLOR_MASK_RGB565 0x07E0 #define THIRD_COLOR_MASK_RGB565 0x001F #define ALPHA_BITS_MASK_RGB565 0x0000 /* RGB555 format */ #define BUILD_PIXEL_RGB555(R, G, B) (((int)(R) << 10) | ((int)(G) << 5) | (int)(B)) #define BUILD_PIXEL2_RGB555(R, G, B) (((int)(R) << 10) | ((int)(G) << 5) | (int)(B)) #define DECOMPOSE_PIXEL_RGB555(PIX, R, G, B) \ { \ (R) = (PIX) >> 10; \ (G) = ((PIX) >> 5) & 0x1f; \ (B) = (PIX)&0x1f; \ } #define SPARE_RGB_BIT_MASK_RGB555 (1 << 15) #define MAX_RED_RGB555 31 #define MAX_GREEN_RGB555 31 #define MAX_BLUE_RGB555 31 #define RED_SHIFT_BITS_RGB555 10 #define GREEN_SHIFT_BITS_RGB555 5 #define RED_LOW_BIT_MASK_RGB555 0x0400 #define GREEN_LOW_BIT_MASK_RGB555 0x0020 #define BLUE_LOW_BIT_MASK_RGB555 0x0001 #define RED_HI_BIT_MASK_RGB555 0x4000 #define GREEN_HI_BIT_MASK_RGB555 0x0200 #define BLUE_HI_BIT_MASK_RGB555 0x0010 #define FIRST_COLOR_MASK_RGB555 0x7C00 #define SECOND_COLOR_MASK_RGB555 0x03E0 #define THIRD_COLOR_MASK_RGB555 0x001F #define ALPHA_BITS_MASK_RGB555 0x0000 #define CONCAT(X, Y) X##Y // C pre-processor needs a two stage macro define to enable it to concat // to macro names together to form the name of another macro. #define BUILD_PIXEL_D(F, R, G, B) CONCAT(BUILD_PIXEL_, F) (R, G, B) #define BUILD_PIXEL2_D(F, R, G, B) CONCAT(BUILD_PIXEL2_, F) (R, G, B) #define DECOMPOSE_PIXEL_D(F, PIX, R, G, B) CONCAT(DECOMPOSE_PIXEL_, F) (PIX, R, G, B) #define BUILD_PIXEL(R, G, B) BUILD_PIXEL_D(PIXEL_FORMAT, R, G, B) #define BUILD_PIXEL2(R, G, B) BUILD_PIXEL2_D(PIXEL_FORMAT, R, G, B) #define DECOMPOSE_PIXEL(PIX, R, G, B) DECOMPOSE_PIXEL_D(PIXEL_FORMAT, PIX, R, G, B) #define MAX_RED_D(F) CONCAT(MAX_RED_, F) #define MAX_GREEN_D(F) CONCAT(MAX_GREEN_, F) #define MAX_BLUE_D(F) CONCAT(MAX_BLUE_, F) #define RED_SHIFT_BITS_D(F) CONCAT(RED_SHIFT_BITS_, F) #define GREEN_SHIFT_BITS_D(F) CONCAT(GREEN_SHIFT_BITS_, F) #define RED_LOW_BIT_MASK_D(F) CONCAT(RED_LOW_BIT_MASK_, F) #define GREEN_LOW_BIT_MASK_D(F) CONCAT(GREEN_LOW_BIT_MASK_, F) #define BLUE_LOW_BIT_MASK_D(F) CONCAT(BLUE_LOW_BIT_MASK_, F) #define RED_HI_BIT_MASK_D(F) CONCAT(RED_HI_BIT_MASK_, F) #define GREEN_HI_BIT_MASK_D(F) CONCAT(GREEN_HI_BIT_MASK_, F) #define BLUE_HI_BIT_MASK_D(F) CONCAT(BLUE_HI_BIT_MASK_, F) #define FIRST_COLOR_MASK_D(F) CONCAT(FIRST_COLOR_MASK_, F) #define SECOND_COLOR_MASK_D(F) CONCAT(SECOND_COLOR_MASK_, F) #define THIRD_COLOR_MASK_D(F) CONCAT(THIRD_COLOR_MASK_, F) #define ALPHA_BITS_MASK_D(F) CONCAT(ALPHA_BITS_MASK_, F) #define MAX_RED MAX_RED_D(PIXEL_FORMAT) #define MAX_GREEN MAX_GREEN_D(PIXEL_FORMAT) #define MAX_BLUE MAX_BLUE_D(PIXEL_FORMAT) #define RED_SHIFT_BITS RED_SHIFT_BITS_D(PIXEL_FORMAT) #define GREEN_SHIFT_BITS GREEN_SHIFT_BITS_D(PIXEL_FORMAT) #define RED_LOW_BIT_MASK RED_LOW_BIT_MASK_D(PIXEL_FORMAT) #define GREEN_LOW_BIT_MASK GREEN_LOW_BIT_MASK_D(PIXEL_FORMAT) #define BLUE_LOW_BIT_MASK BLUE_LOW_BIT_MASK_D(PIXEL_FORMAT) #define RED_HI_BIT_MASK RED_HI_BIT_MASK_D(PIXEL_FORMAT) #define GREEN_HI_BIT_MASK GREEN_HI_BIT_MASK_D(PIXEL_FORMAT) #define BLUE_HI_BIT_MASK BLUE_HI_BIT_MASK_D(PIXEL_FORMAT) #define FIRST_COLOR_MASK FIRST_COLOR_MASK_D(PIXEL_FORMAT) #define SECOND_COLOR_MASK SECOND_COLOR_MASK_D(PIXEL_FORMAT) #define THIRD_COLOR_MASK THIRD_COLOR_MASK_D(PIXEL_FORMAT) #define ALPHA_BITS_MASK ALPHA_BITS_MASK_D(PIXEL_FORMAT) #define GREEN_HI_BIT ((MAX_GREEN + 1) >> 1) #define RGB_LOW_BITS_MASK (RED_LOW_BIT_MASK | GREEN_LOW_BIT_MASK | BLUE_LOW_BIT_MASK) #define RGB_HI_BITS_MASK (RED_HI_BIT_MASK | GREEN_HI_BIT_MASK | BLUE_HI_BIT_MASK) #define RGB_HI_BITS_MASKx2 ((RED_HI_BIT_MASK | GREEN_HI_BIT_MASK | BLUE_HI_BIT_MASK) << 1) #define RGB_REMOVE_LOW_BITS_MASK (~RGB_LOW_BITS_MASK) #define FIRST_THIRD_COLOR_MASK (FIRST_COLOR_MASK | THIRD_COLOR_MASK) #define TWO_LOW_BITS_MASK (RGB_LOW_BITS_MASK | (RGB_LOW_BITS_MASK << 1)) #define HIGH_BITS_SHIFTED_TWO_MASK (((FIRST_COLOR_MASK | SECOND_COLOR_MASK | THIRD_COLOR_MASK) & ~TWO_LOW_BITS_MASK) >> 2) #endif // _PIXFORM_H_