/*******************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
 
  (c) Copyright 1996 - 2003 Gary Henderson (gary.henderson@ntlworld.com) and
                            Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2003 Matthew Kendora and
                            Brad Jorsch (anomie@users.sourceforge.net)
 

                      
  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
                            _Demo_ (_demo_@zsnes.com), and
                            Nach (n-a-c-h@users.sourceforge.net)
                                          
  C4 C++ code
  (c) Copyright 2003 Brad Jorsch

  DSP-1 emulator code
  (c) Copyright 1998 - 2003 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
                            John Weidman (jweidman@slip.net),
                            neviksti (neviksti@hotmail.com), and
                            Kris Bleakley (stinkfish@bigpond.com)
 
  DSP-2 emulator code
  (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
                     Lord Nightmare (lord_nightmare@users.sourceforge.net

  OBC1 emulator code
  (c) Copyright 2001 - 2003 zsKnight, pagefault (pagefault@zsnes.com)
  Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code
  (c) Copyright 2002 Matthew Kendora with research by
                     zsKnight, John Weidman, and Dark Force

  S-RTC C emulator code
  (c) Copyright 2001 John Weidman
  
  Super FX x86 assembler emulator code 
  (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault 

  Super FX C emulator code 
  (c) Copyright 1997 - 1999 Ivar and Gary Henderson.



 
  Specific ports contains the works of other authors. See headers in
  individual files.
 
  Snes9x homepage: http://www.snes9x.com
 
  Permission to use, copy, modify and distribute Snes9x in both binary and
  source form, for non-commercial purposes, is hereby granted without fee,
  providing that this license information and copyright notice appear with
  all copies and any derived work.
 
  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software.
 
  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes
  charging money for Snes9x or software derived from Snes9x.
 
  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.
 
  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
*******************************************************************************/

#ifndef _PIXFORM_H_
#define _PIXFORM_H_

#ifdef GFX_MULTI_FORMAT

enum { RGB565, RGB555, BGR565, BGR555, GBR565, GBR555, RGB5551 };

#define BUILD_PIXEL(R,G,B) ((*GFX.BuildPixel) (R, G, B))
#define BUILD_PIXEL2(R,G,B) ((*GFX.BuildPixel2) (R, G, B))
#define DECOMPOSE_PIXEL(Pixel,R,G,B) ((*GFX.DecomposePixel) (Pixel, R,G,B))

extern uint32 RED_LOW_BIT_MASK;
extern uint32 GREEN_LOW_BIT_MASK;
extern uint32 BLUE_LOW_BIT_MASK;
extern uint32 RED_HI_BIT_MASK;
extern uint32 GREEN_HI_BIT_MASK;
extern uint32 BLUE_HI_BIT_MASK;
extern uint32 MAX_RED;
extern uint32 MAX_GREEN;
extern uint32 MAX_BLUE;
extern uint32 SPARE_RGB_BIT_MASK;
extern uint32 GREEN_HI_BIT;
extern uint32 RGB_LOW_BITS_MASK;
extern uint32 RGB_HI_BITS_MASK;
extern uint32 RGB_HI_BITS_MASKx2;
extern uint32 RGB_REMOVE_LOW_BITS_MASK;
extern uint32 FIRST_COLOR_MASK;
extern uint32 SECOND_COLOR_MASK;
extern uint32 THIRD_COLOR_MASK;
extern uint32 ALPHA_BITS_MASK;
extern uint32 FIRST_THIRD_COLOR_MASK;
extern uint32 TWO_LOW_BITS_MASK;
extern uint32 HIGH_BITS_SHIFTED_TWO_MASK;

#endif

/* RGB565 format */
#define BUILD_PIXEL_RGB565(R,G,B) (((int) (R) << 11) | ((int) (G) << 6) | (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_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_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

/* BGR565 format */
#define BUILD_PIXEL_BGR565(R,G,B) (((int) (B) << 11) | ((int) (G) << 6) | (int) (R))
#define BUILD_PIXEL2_BGR565(R,G,B) (((int) (B) << 11) | ((int) (G) << 5) | (int) (R))
#define DECOMPOSE_PIXEL_BGR565(PIX,R,G,B) {(B) = (PIX) >> 11; (G) = ((PIX) >> 6) & 0x1f; (R) = (PIX) & 0x1f; }
#define SPARE_RGB_BIT_MASK_BGR565 (1 << 5)

#define MAX_RED_BGR565		  31
#define MAX_GREEN_BGR565	  63
#define MAX_BLUE_BGR565		  31
#define RED_LOW_BIT_MASK_BGR565   0x0001
#define GREEN_LOW_BIT_MASK_BGR565 0x0040
#define BLUE_LOW_BIT_MASK_BGR565  0x0800
#define RED_HI_BIT_MASK_BGR565    0x0010
#define GREEN_HI_BIT_MASK_BGR565  0x0400
#define BLUE_HI_BIT_MASK_BGR565   0x8000
#define FIRST_COLOR_MASK_BGR565   0xF800
#define SECOND_COLOR_MASK_BGR565  0x07E0
#define THIRD_COLOR_MASK_BGR565   0x001F
#define ALPHA_BITS_MASK_BGR565    0x0000

/* BGR555 format */
#define BUILD_PIXEL_BGR555(R,G,B) (((int) (B) << 10) | ((int) (G) << 5) | (int) (R))
#define BUILD_PIXEL2_BGR555(R,G,B) (((int) (B) << 10) | ((int) (G) << 5) | (int) (R))
#define DECOMPOSE_PIXEL_BGR555(PIX,R,G,B) {(B) = (PIX) >> 10; (G) = ((PIX) >> 5) & 0x1f; (R) = (PIX) & 0x1f; }
#define SPARE_RGB_BIT_MASK_BGR555 (1 << 15)

#define MAX_RED_BGR555		  31
#define MAX_GREEN_BGR555	  31
#define MAX_BLUE_BGR555		  31
#define RED_LOW_BIT_MASK_BGR555   0x0001
#define GREEN_LOW_BIT_MASK_BGR555 0x0020
#define BLUE_LOW_BIT_MASK_BGR555  0x0400
#define RED_HI_BIT_MASK_BGR555    0x0010
#define GREEN_HI_BIT_MASK_BGR555  0x0200
#define BLUE_HI_BIT_MASK_BGR555   0x4000
#define FIRST_COLOR_MASK_BGR555   0x7C00
#define SECOND_COLOR_MASK_BGR555  0x03E0
#define THIRD_COLOR_MASK_BGR555   0x001F
#define ALPHA_BITS_MASK_BGR555    0x0000

/* GBR565 format */
#define BUILD_PIXEL_GBR565(R,G,B) (((int) (G) << 11) | ((int) (B) << 6) | (int) (R))
#define BUILD_PIXEL2_GBR565(R,G,B) (((int) (G) << 11) | ((int) (B) << 5) | (int) (R))
#define DECOMPOSE_PIXEL_GBR565(PIX,R,G,B) {(G) = (PIX) >> 11; (B) = ((PIX) >> 6) & 0x1f; (R) = (PIX) & 0x1f; }
#define SPARE_RGB_BIT_MASK_GBR565 (1 << 5)

#define MAX_RED_GBR565            31
#define MAX_BLUE_GBR565           63
#define MAX_GREEN_GBR565          31
#define RED_LOW_BIT_MASK_GBR565   0x0001
#define BLUE_LOW_BIT_MASK_GBR565  0x0040
#define GREEN_LOW_BIT_MASK_GBR565 0x0800
#define RED_HI_BIT_MASK_GBR565    0x0010
#define BLUE_HI_BIT_MASK_GBR565   0x0400
#define GREEN_HI_BIT_MASK_GBR565  0x8000
#define FIRST_COLOR_MASK_GBR565   0xF800
#define SECOND_COLOR_MASK_GBR565  0x07E0
#define THIRD_COLOR_MASK_GBR565   0x001F
#define ALPHA_BITS_MASK_GBR565    0x0000

/* GBR555 format */
#define BUILD_PIXEL_GBR555(R,G,B) (((int) (G) << 10) | ((int) (B) << 5) | (int) (R))
#define BUILD_PIXEL2_GBR555(R,G,B) (((int) (G) << 10) | ((int) (B) << 5) | (int) (R))
#define DECOMPOSE_PIXEL_GBR555(PIX,R,G,B) {(G) = (PIX) >> 10; (B) = ((PIX) >> 5) & 0x1f; (R) = (PIX) & 0x1f; }
#define SPARE_RGB_BIT_MASK_GBR555 (1 << 15)

#define MAX_RED_GBR555            31
#define MAX_BLUE_GBR555           31
#define MAX_GREEN_GBR555          31
#define RED_LOW_BIT_MASK_GBR555   0x0001
#define BLUE_LOW_BIT_MASK_GBR555  0x0020
#define GREEN_LOW_BIT_MASK_GBR555 0x0400
#define RED_HI_BIT_MASK_GBR555    0x0010
#define BLUE_HI_BIT_MASK_GBR555   0x0200
#define GREEN_HI_BIT_MASK_GBR555  0x4000
#define FIRST_COLOR_MASK_GBR555   0x7C00
#define SECOND_COLOR_MASK_GBR555  0x03E0
#define THIRD_COLOR_MASK_GBR555   0x001F
#define ALPHA_BITS_MASK_GBR555    0x0000

/* RGB5551 format */
#define BUILD_PIXEL_RGB5551(R,G,B) (((int) (R) << 11) | ((int) (G) << 6) | (int) ((B) << 1) | 1)
#define BUILD_PIXEL2_RGB5551(R,G,B) (((int) (R) << 11) | ((int) (G) << 6) | (int) ((B) << 1) | 1)
#define DECOMPOSE_PIXEL_RGB5551(PIX,R,G,B) {(R) = (PIX) >> 11; (G) = ((PIX) >> 6) & 0x1f; (B) = ((PIX) >> 1) & 0x1f; }
#define SPARE_RGB_BIT_MASK_RGB5551 (1)

#define MAX_RED_RGB5551		   31
#define MAX_GREEN_RGB5551	   31
#define MAX_BLUE_RGB5551	   31
#define RED_LOW_BIT_MASK_RGB5551   0x0800
#define GREEN_LOW_BIT_MASK_RGB5551 0x0040
#define BLUE_LOW_BIT_MASK_RGB5551  0x0002
#define RED_HI_BIT_MASK_RGB5551    0x8000
#define GREEN_HI_BIT_MASK_RGB5551  0x0400
#define BLUE_HI_BIT_MASK_RGB5551   0x0020
#define FIRST_COLOR_MASK_RGB5551   0xf800
#define SECOND_COLOR_MASK_RGB5551  0x07c0
#define THIRD_COLOR_MASK_RGB5551   0x003e
#define ALPHA_BITS_MASK_RGB5551    0x0001

#ifndef GFX_MULTI_FORMAT
#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_BLUE_D(F)		CONCAT(MAX_BLUE_,F)
#define MAX_GREEN_D(F)		CONCAT(MAX_GREEN_,F)
#define RED_LOW_BIT_MASK_D(F)	CONCAT(RED_LOW_BIT_MASK_,F)
#define BLUE_LOW_BIT_MASK_D(F)	CONCAT(BLUE_LOW_BIT_MASK_,F)
#define GREEN_LOW_BIT_MASK_D(F)	CONCAT(GREEN_LOW_BIT_MASK_,F)
#define RED_HI_BIT_MASK_D(F)	CONCAT(RED_HI_BIT_MASK_,F)
#define BLUE_HI_BIT_MASK_D(F)	CONCAT(BLUE_HI_BIT_MASK_,F)
#define GREEN_HI_BIT_MASK_D(F)	CONCAT(GREEN_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_BLUE		MAX_BLUE_D(PIXEL_FORMAT)
#define MAX_GREEN		MAX_GREEN_D(PIXEL_FORMAT)
#define RED_LOW_BIT_MASK	RED_LOW_BIT_MASK_D(PIXEL_FORMAT)
#define BLUE_LOW_BIT_MASK       BLUE_LOW_BIT_MASK_D(PIXEL_FORMAT)
#define GREEN_LOW_BIT_MASK      GREEN_LOW_BIT_MASK_D(PIXEL_FORMAT)
#define RED_HI_BIT_MASK	        RED_HI_BIT_MASK_D(PIXEL_FORMAT)
#define BLUE_HI_BIT_MASK        BLUE_HI_BIT_MASK_D(PIXEL_FORMAT)
#define GREEN_HI_BIT_MASK       GREEN_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

#endif
