/project/jni/sdl-1.3/src/video/SDL_blit.h
https://github.com/aichunyu/FFPlayer · C Header · 495 lines · 418 code · 32 blank · 45 comment · 37 complexity · 64d191cb0c914f22c031c4ca3d22ac1f MD5 · raw file
- /*
- Simple DirectMedia Layer
- Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
- */
- #include "SDL_config.h"
- #ifndef _SDL_blit_h
- #define _SDL_blit_h
- #include "SDL_cpuinfo.h"
- #include "SDL_endian.h"
- #include "SDL_surface.h"
- /* Table to do pixel byte expansion */
- extern Uint8* SDL_expand_byte[9];
- /* SDL blit copy flags */
- #define SDL_COPY_MODULATE_COLOR 0x00000001
- #define SDL_COPY_MODULATE_ALPHA 0x00000002
- #define SDL_COPY_BLEND 0x00000010
- #define SDL_COPY_ADD 0x00000020
- #define SDL_COPY_MOD 0x00000040
- #define SDL_COPY_COLORKEY 0x00000100
- #define SDL_COPY_NEAREST 0x00000200
- #define SDL_COPY_RLE_DESIRED 0x00001000
- #define SDL_COPY_RLE_COLORKEY 0x00002000
- #define SDL_COPY_RLE_ALPHAKEY 0x00004000
- #define SDL_COPY_RLE_MASK (SDL_COPY_RLE_DESIRED|SDL_COPY_RLE_COLORKEY|SDL_COPY_RLE_ALPHAKEY)
- /* SDL blit CPU flags */
- #define SDL_CPU_ANY 0x00000000
- #define SDL_CPU_MMX 0x00000001
- #define SDL_CPU_3DNOW 0x00000002
- #define SDL_CPU_SSE 0x00000004
- #define SDL_CPU_SSE2 0x00000008
- #define SDL_CPU_ALTIVEC_PREFETCH 0x00000010
- #define SDL_CPU_ALTIVEC_NOPREFETCH 0x00000020
- typedef struct
- {
- Uint8 *src;
- int src_w, src_h;
- int src_pitch;
- int src_skip;
- Uint8 *dst;
- int dst_w, dst_h;
- int dst_pitch;
- int dst_skip;
- SDL_PixelFormat *src_fmt;
- SDL_PixelFormat *dst_fmt;
- Uint8 *table;
- int flags;
- Uint32 colorkey;
- Uint8 r, g, b, a;
- } SDL_BlitInfo;
- typedef void (SDLCALL * SDL_BlitFunc) (SDL_BlitInfo * info);
- typedef struct
- {
- Uint32 src_format;
- Uint32 dst_format;
- int flags;
- int cpu;
- SDL_BlitFunc func;
- } SDL_BlitFuncEntry;
- /* Blit mapping definition */
- typedef struct SDL_BlitMap
- {
- SDL_Surface *dst;
- int identity;
- SDL_blit blit;
- void *data;
- SDL_BlitInfo info;
- /* the version count matches the destination; mismatch indicates
- an invalid mapping */
- Uint32 dst_palette_version;
- Uint32 src_palette_version;
- } SDL_BlitMap;
- /* Functions found in SDL_blit.c */
- extern int SDL_CalculateBlit(SDL_Surface * surface);
- /* Functions found in SDL_blit_*.c */
- extern SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface * surface);
- extern SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface * surface);
- extern SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface * surface);
- extern SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface * surface);
- /*
- * Useful macros for blitting routines
- */
- #if defined(__GNUC__)
- #define DECLARE_ALIGNED(t,v,a) t __attribute__((aligned(a))) v
- #elif defined(_MSC_VER)
- #define DECLARE_ALIGNED(t,v,a) __declspec(align(a)) t v
- #else
- #define DECLARE_ALIGNED(t,v,a) t v
- #endif
- /* Load pixel of the specified format from a buffer and get its R-G-B values */
- #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \
- { \
- r = SDL_expand_byte[fmt->Rloss][((Pixel&fmt->Rmask)>>fmt->Rshift)]; \
- g = SDL_expand_byte[fmt->Gloss][((Pixel&fmt->Gmask)>>fmt->Gshift)]; \
- b = SDL_expand_byte[fmt->Bloss][((Pixel&fmt->Bmask)>>fmt->Bshift)]; \
- }
- #define RGB_FROM_RGB565(Pixel, r, g, b) \
- { \
- r = SDL_expand_byte[3][((Pixel&0xF800)>>11)]; \
- g = SDL_expand_byte[2][((Pixel&0x07E0)>>5)]; \
- b = SDL_expand_byte[3][(Pixel&0x001F)]; \
- }
- #define RGB_FROM_RGB555(Pixel, r, g, b) \
- { \
- r = SDL_expand_byte[3][((Pixel&0x7C00)>>10)]; \
- g = SDL_expand_byte[3][((Pixel&0x03E0)>>5)]; \
- b = SDL_expand_byte[3][(Pixel&0x001F)]; \
- }
- #define RGB_FROM_RGB888(Pixel, r, g, b) \
- { \
- r = ((Pixel&0xFF0000)>>16); \
- g = ((Pixel&0xFF00)>>8); \
- b = (Pixel&0xFF); \
- }
- #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \
- do { \
- switch (bpp) { \
- case 2: \
- Pixel = *((Uint16 *)(buf)); \
- break; \
- \
- case 3: { \
- Uint8 *B = (Uint8 *)(buf); \
- if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
- Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \
- } else { \
- Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \
- } \
- } \
- break; \
- \
- case 4: \
- Pixel = *((Uint32 *)(buf)); \
- break; \
- \
- default: \
- Pixel = 0; /* stop gcc complaints */ \
- break; \
- } \
- } while (0)
- #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \
- do { \
- switch (bpp) { \
- case 2: \
- Pixel = *((Uint16 *)(buf)); \
- RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
- break; \
- \
- case 3: { \
- Pixel = 0; \
- if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
- r = *((buf)+fmt->Rshift/8); \
- g = *((buf)+fmt->Gshift/8); \
- b = *((buf)+fmt->Bshift/8); \
- } else { \
- r = *((buf)+2-fmt->Rshift/8); \
- g = *((buf)+2-fmt->Gshift/8); \
- b = *((buf)+2-fmt->Bshift/8); \
- } \
- } \
- break; \
- \
- case 4: \
- Pixel = *((Uint32 *)(buf)); \
- RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
- break; \
- \
- default: \
- /* stop gcc complaints */ \
- Pixel = 0; \
- r = g = b = 0; \
- break; \
- } \
- } while (0)
- /* Assemble R-G-B values into a specified pixel format and store them */
- #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \
- { \
- Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \
- ((g>>fmt->Gloss)<<fmt->Gshift)| \
- ((b>>fmt->Bloss)<<fmt->Bshift)| \
- fmt->Amask; \
- }
- #define RGB565_FROM_RGB(Pixel, r, g, b) \
- { \
- Pixel = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \
- }
- #define RGB555_FROM_RGB(Pixel, r, g, b) \
- { \
- Pixel = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \
- }
- #define RGB888_FROM_RGB(Pixel, r, g, b) \
- { \
- Pixel = (r<<16)|(g<<8)|b; \
- }
- #define ARGB8888_FROM_RGBA(Pixel, r, g, b, a) \
- { \
- Pixel = (a<<24)|(r<<16)|(g<<8)|b; \
- }
- #define RGBA8888_FROM_RGBA(Pixel, r, g, b, a) \
- { \
- Pixel = (r<<24)|(g<<16)|(b<<8)|a; \
- }
- #define ABGR8888_FROM_RGBA(Pixel, r, g, b, a) \
- { \
- Pixel = (a<<24)|(b<<16)|(g<<8)|r; \
- }
- #define BGRA8888_FROM_RGBA(Pixel, r, g, b, a) \
- { \
- Pixel = (b<<24)|(g<<16)|(r<<8)|a; \
- }
- #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \
- { \
- switch (bpp) { \
- case 2: { \
- Uint16 Pixel; \
- \
- PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
- *((Uint16 *)(buf)) = Pixel; \
- } \
- break; \
- \
- case 3: { \
- if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
- *((buf)+fmt->Rshift/8) = r; \
- *((buf)+fmt->Gshift/8) = g; \
- *((buf)+fmt->Bshift/8) = b; \
- } else { \
- *((buf)+2-fmt->Rshift/8) = r; \
- *((buf)+2-fmt->Gshift/8) = g; \
- *((buf)+2-fmt->Bshift/8) = b; \
- } \
- } \
- break; \
- \
- case 4: { \
- Uint32 Pixel; \
- \
- PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
- *((Uint32 *)(buf)) = Pixel; \
- } \
- break; \
- } \
- }
- /* FIXME: Should we rescale alpha into 0..255 here? */
- #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \
- { \
- r = SDL_expand_byte[fmt->Rloss][((Pixel&fmt->Rmask)>>fmt->Rshift)]; \
- g = SDL_expand_byte[fmt->Gloss][((Pixel&fmt->Gmask)>>fmt->Gshift)]; \
- b = SDL_expand_byte[fmt->Bloss][((Pixel&fmt->Bmask)>>fmt->Bshift)]; \
- a = SDL_expand_byte[fmt->Aloss][((Pixel&fmt->Amask)>>fmt->Ashift)]; \
- }
- #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \
- { \
- r = (Pixel&fmt->Rmask)>>fmt->Rshift; \
- g = (Pixel&fmt->Gmask)>>fmt->Gshift; \
- b = (Pixel&fmt->Bmask)>>fmt->Bshift; \
- a = (Pixel&fmt->Amask)>>fmt->Ashift; \
- }
- #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \
- { \
- r = (Pixel>>24); \
- g = ((Pixel>>16)&0xFF); \
- b = ((Pixel>>8)&0xFF); \
- a = (Pixel&0xFF); \
- }
- #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \
- { \
- r = ((Pixel>>16)&0xFF); \
- g = ((Pixel>>8)&0xFF); \
- b = (Pixel&0xFF); \
- a = (Pixel>>24); \
- }
- #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \
- { \
- r = (Pixel&0xFF); \
- g = ((Pixel>>8)&0xFF); \
- b = ((Pixel>>16)&0xFF); \
- a = (Pixel>>24); \
- }
- #define RGBA_FROM_BGRA8888(Pixel, r, g, b, a) \
- { \
- r = ((Pixel>>8)&0xFF); \
- g = ((Pixel>>16)&0xFF); \
- b = (Pixel>>24); \
- a = (Pixel&0xFF); \
- }
- #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \
- do { \
- switch (bpp) { \
- case 2: \
- Pixel = *((Uint16 *)(buf)); \
- RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
- break; \
- \
- case 3: { \
- Pixel = 0; \
- if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
- r = *((buf)+fmt->Rshift/8); \
- g = *((buf)+fmt->Gshift/8); \
- b = *((buf)+fmt->Bshift/8); \
- } else { \
- r = *((buf)+2-fmt->Rshift/8); \
- g = *((buf)+2-fmt->Gshift/8); \
- b = *((buf)+2-fmt->Bshift/8); \
- } \
- a = 0xFF; \
- } \
- break; \
- \
- case 4: \
- Pixel = *((Uint32 *)(buf)); \
- RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
- break; \
- \
- default: \
- /* stop gcc complaints */ \
- Pixel = 0; \
- r = g = b = a = 0; \
- break; \
- } \
- } while (0)
- /* FIXME: this isn't correct, especially for Alpha (maximum != 255) */
- #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \
- { \
- Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \
- ((g>>fmt->Gloss)<<fmt->Gshift)| \
- ((b>>fmt->Bloss)<<fmt->Bshift)| \
- ((a>>fmt->Aloss)<<fmt->Ashift); \
- }
- #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \
- { \
- switch (bpp) { \
- case 2: { \
- Uint16 Pixel; \
- \
- PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
- *((Uint16 *)(buf)) = Pixel; \
- } \
- break; \
- \
- case 3: { \
- if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
- *((buf)+fmt->Rshift/8) = r; \
- *((buf)+fmt->Gshift/8) = g; \
- *((buf)+fmt->Bshift/8) = b; \
- } else { \
- *((buf)+2-fmt->Rshift/8) = r; \
- *((buf)+2-fmt->Gshift/8) = g; \
- *((buf)+2-fmt->Bshift/8) = b; \
- } \
- } \
- break; \
- \
- case 4: { \
- Uint32 Pixel; \
- \
- PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
- *((Uint32 *)(buf)) = Pixel; \
- } \
- break; \
- } \
- }
- /* Blend the RGB values of two Pixels based on a source alpha value */
- #define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB) \
- do { \
- dR = ((((int)(sR-dR)*(int)A)/255)+dR); \
- dG = ((((int)(sG-dG)*(int)A)/255)+dG); \
- dB = ((((int)(sB-dB)*(int)A)/255)+dB); \
- } while(0)
- /* This is a very useful loop for optimizing blitters */
- #if defined(_MSC_VER) && (_MSC_VER == 1300)
- /* There's a bug in the Visual C++ 7 optimizer when compiling this code */
- #else
- #define USE_DUFFS_LOOP
- #endif
- #ifdef USE_DUFFS_LOOP
- /* 8-times unrolled loop */
- #define DUFFS_LOOP8(pixel_copy_increment, width) \
- { int n = (width+7)/8; \
- switch (width & 7) { \
- case 0: do { pixel_copy_increment; \
- case 7: pixel_copy_increment; \
- case 6: pixel_copy_increment; \
- case 5: pixel_copy_increment; \
- case 4: pixel_copy_increment; \
- case 3: pixel_copy_increment; \
- case 2: pixel_copy_increment; \
- case 1: pixel_copy_increment; \
- } while ( --n > 0 ); \
- } \
- }
- /* 4-times unrolled loop */
- #define DUFFS_LOOP4(pixel_copy_increment, width) \
- { int n = (width+3)/4; \
- switch (width & 3) { \
- case 0: do { pixel_copy_increment; \
- case 3: pixel_copy_increment; \
- case 2: pixel_copy_increment; \
- case 1: pixel_copy_increment; \
- } while (--n > 0); \
- } \
- }
- /* Use the 8-times version of the loop by default */
- #define DUFFS_LOOP(pixel_copy_increment, width) \
- DUFFS_LOOP8(pixel_copy_increment, width)
- /* Special version of Duff's device for even more optimization */
- #define DUFFS_LOOP_124(pixel_copy_increment1, \
- pixel_copy_increment2, \
- pixel_copy_increment4, width) \
- { int n = width; \
- if (n & 1) { \
- pixel_copy_increment1; n -= 1; \
- } \
- if (n & 2) { \
- pixel_copy_increment2; n -= 2; \
- } \
- if (n) { \
- n = (n+7)/ 8; \
- switch (n & 4) { \
- case 0: do { pixel_copy_increment4; \
- case 4: pixel_copy_increment4; \
- } while (--n > 0); \
- } \
- } \
- }
- #else
- /* Don't use Duff's device to unroll loops */
- #define DUFFS_LOOP(pixel_copy_increment, width) \
- { int n; \
- for ( n=width; n > 0; --n ) { \
- pixel_copy_increment; \
- } \
- }
- #define DUFFS_LOOP8(pixel_copy_increment, width) \
- DUFFS_LOOP(pixel_copy_increment, width)
- #define DUFFS_LOOP4(pixel_copy_increment, width) \
- DUFFS_LOOP(pixel_copy_increment, width)
- #define DUFFS_LOOP_124(pixel_copy_increment1, \
- pixel_copy_increment2, \
- pixel_copy_increment4, width) \
- DUFFS_LOOP(pixel_copy_increment1, width)
- #endif /* USE_DUFFS_LOOP */
- /* Prevent Visual C++ 6.0 from printing out stupid warnings */
- #if defined(_MSC_VER) && (_MSC_VER >= 600)
- #pragma warning(disable: 4550)
- #endif
- #endif /* _SDL_blit_h */
- /* vi: set ts=4 sw=4 expandtab: */