Mercurial > sdl-ios-xcode
diff src/video/SDL_yuv_sw.c @ 1662:782fd950bd46 SDL-1.3
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.
The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce
The headers are being converted to automatically generate doxygen documentation.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 28 May 2006 13:04:16 +0000 |
| parents | 8a858076f39d |
| children | 4da1ee79c9af |
line wrap: on
line diff
--- a/src/video/SDL_yuv_sw.c Sun May 21 17:27:13 2006 +0000 +++ b/src/video/SDL_yuv_sw.c Sun May 28 13:04:16 2006 +0000 @@ -91,103 +91,104 @@ /* The functions used to manipulate software video overlays */ static struct private_yuvhwfuncs sw_yuvfuncs = { - SDL_LockYUV_SW, - SDL_UnlockYUV_SW, - SDL_DisplayYUV_SW, - SDL_FreeYUV_SW + SDL_LockYUV_SW, + SDL_UnlockYUV_SW, + SDL_DisplayYUV_SW, + SDL_FreeYUV_SW }; /* RGB conversion lookup tables */ -struct private_yuvhwdata { - SDL_Surface *stretch; - SDL_Surface *display; - Uint8 *pixels; - int *colortab; - Uint32 *rgb_2_pix; - void (*Display1X)(int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ); - void (*Display2X)(int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ); +struct private_yuvhwdata +{ + SDL_Surface *stretch; + SDL_Surface *display; + Uint8 *pixels; + int *colortab; + Uint32 *rgb_2_pix; + void (*Display1X) (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod); + void (*Display2X) (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod); - /* These are just so we don't have to allocate them separately */ - Uint16 pitches[3]; - Uint8 *planes[3]; + /* These are just so we don't have to allocate them separately */ + Uint16 pitches[3]; + Uint8 *planes[3]; }; /* The colorspace conversion functions */ -#if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/ -extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, +#if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES */ +extern void Color565DitherYV12MMX1X (int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ); -extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, + int rows, int cols, int mod); +extern void ColorRGBDitherYV12MMX1X (int *colortab, Uint32 * rgb_2_pix, unsigned char *lum, unsigned char *cr, unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ); -#endif + int rows, int cols, int mod); +#endif -static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color16DitherYV12Mod1X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned short* row1; - unsigned short* row2; - unsigned char* lum2; + unsigned short *row1; + unsigned short *row2; + unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; - row1 = (unsigned short*) out; + row1 = (unsigned short *) out; row2 = row1 + cols + mod; lum2 = lum + cols; mod += cols + mod; y = rows / 2; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - ++cr; ++cb; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + ++cr; + ++cb; L = *lum++; - *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); L = *lum++; - *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row1++ = (unsigned short) (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); /* Now, do second row. */ L = *lum2++; - *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); L = *lum2++; - *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row2++ = (unsigned short) (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); } /* @@ -195,22 +196,23 @@ * to the ++'s above),but they need to be at the start * of the line after that. */ - lum += cols; + lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } -static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color24DitherYV12Mod1X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { unsigned int value; - unsigned char* row1; - unsigned char* row2; - unsigned char* lum2; + unsigned char *row1; + unsigned char *row2; + unsigned char *lum2; int x, y; int cr_r; int crb_g; @@ -218,59 +220,54 @@ int cols_2 = cols / 2; row1 = out; - row2 = row1 + cols*3 + mod*3; + row2 = row1 + cols * 3 + mod * 3; lum2 = lum + cols; mod += cols + mod; mod *= 3; y = rows / 2; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - ++cr; ++cb; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + ++cr; + ++cb; L = *lum++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - *row1++ = (value ) & 0xFF; - *row1++ = (value >> 8) & 0xFF; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + *row1++ = (value) & 0xFF; + *row1++ = (value >> 8) & 0xFF; *row1++ = (value >> 16) & 0xFF; L = *lum++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - *row1++ = (value ) & 0xFF; - *row1++ = (value >> 8) & 0xFF; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + *row1++ = (value) & 0xFF; + *row1++ = (value >> 8) & 0xFF; *row1++ = (value >> 16) & 0xFF; /* Now, do second row. */ L = *lum2++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - *row2++ = (value ) & 0xFF; - *row2++ = (value >> 8) & 0xFF; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + *row2++ = (value) & 0xFF; + *row2++ = (value >> 8) & 0xFF; *row2++ = (value >> 16) & 0xFF; L = *lum2++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - *row2++ = (value ) & 0xFF; - *row2++ = (value >> 8) & 0xFF; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + *row2++ = (value) & 0xFF; + *row2++ = (value >> 8) & 0xFF; *row2++ = (value >> 16) & 0xFF; } @@ -279,69 +276,65 @@ * to the ++'s above),but they need to be at the start * of the line after that. */ - lum += cols; + lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } -static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color32DitherYV12Mod1X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned int* row1; - unsigned int* row2; - unsigned char* lum2; + unsigned int *row1; + unsigned int *row2; + unsigned char *lum2; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; - row1 = (unsigned int*) out; + row1 = (unsigned int *) out; row2 = row1 + cols + mod; lum2 = lum + cols; mod += cols + mod; y = rows / 2; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - ++cr; ++cb; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + ++cr; + ++cb; L = *lum++; - *row1++ = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row1++ = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum++; - *row1++ = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row1++ = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); /* Now, do second row. */ L = *lum2++; - *row2++ = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row2++ = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); L = *lum2++; - *row2++ = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + *row2++ = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); } /* @@ -349,7 +342,7 @@ * to the ++'s above),but they need to be at the start * of the line after that. */ - lum += cols; + lum += cols; lum2 += cols; row1 += mod; row2 += mod; @@ -361,15 +354,16 @@ * 16 bits replicated in the upper 16. This means I can write ints and get * the horisontal doubling for free (almost). */ -static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color16DitherYV12Mod2X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned int* row1 = (unsigned int*) out; - const int next_row = cols+(mod/2); - unsigned int* row2 = row1 + 2*next_row; - unsigned char* lum2; + unsigned int *row1 = (unsigned int *) out; + const int next_row = cols + (mod / 2); + unsigned int *row2 = row1 + 2 * next_row; + unsigned char *lum2; int x, y; int cr_r; int crb_g; @@ -378,47 +372,46 @@ lum2 = lum + cols; - mod = (next_row * 3) + (mod/2); + mod = (next_row * 3) + (mod / 2); y = rows / 2; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - ++cr; ++cb; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + ++cr; + ++cb; L = *lum++; - row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); row1++; L = *lum++; - row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row1[0] = row1[next_row] = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); row1++; /* Now, do second row. */ L = *lum2++; - row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); row2++; L = *lum2++; - row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row2[0] = row2[next_row] = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); row2++; } @@ -427,23 +420,24 @@ * to the ++'s above),but they need to be at the start * of the line after that. */ - lum += cols; + lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } -static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color24DitherYV12Mod2X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { unsigned int value; - unsigned char* row1 = out; - const int next_row = (cols*2 + mod) * 3; - unsigned char* row2 = row1 + 2*next_row; - unsigned char* lum2; + unsigned char *row1 = out; + const int next_row = (cols * 2 + mod) * 3; + unsigned char *row2 = row1 + 2 * next_row; + unsigned char *lum2; int x, y; int cr_r; int crb_g; @@ -452,72 +446,67 @@ lum2 = lum + cols; - mod = next_row*3 + mod*3; + mod = next_row * 3 + mod * 3; y = rows / 2; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - ++cr; ++cb; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + ++cr; + ++cb; L = *lum++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = - (value ) & 0xFF; - row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = - (value >> 8) & 0xFF; - row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = - (value >> 16) & 0xFF; - row1 += 2*3; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] = + row1[next_row + 3 + 0] = (value) & 0xFF; + row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] = + row1[next_row + 3 + 1] = (value >> 8) & 0xFF; + row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] = + row1[next_row + 3 + 2] = (value >> 16) & 0xFF; + row1 += 2 * 3; L = *lum++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = - (value ) & 0xFF; - row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = - (value >> 8) & 0xFF; - row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = - (value >> 16) & 0xFF; - row1 += 2*3; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + row1[0 + 0] = row1[3 + 0] = row1[next_row + 0] = + row1[next_row + 3 + 0] = (value) & 0xFF; + row1[0 + 1] = row1[3 + 1] = row1[next_row + 1] = + row1[next_row + 3 + 1] = (value >> 8) & 0xFF; + row1[0 + 2] = row1[3 + 2] = row1[next_row + 2] = + row1[next_row + 3 + 2] = (value >> 16) & 0xFF; + row1 += 2 * 3; /* Now, do second row. */ L = *lum2++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = - (value ) & 0xFF; - row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = - (value >> 8) & 0xFF; - row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = - (value >> 16) & 0xFF; - row2 += 2*3; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] = + row2[next_row + 3 + 0] = (value) & 0xFF; + row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] = + row2[next_row + 3 + 1] = (value >> 8) & 0xFF; + row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] = + row2[next_row + 3 + 2] = (value >> 16) & 0xFF; + row2 += 2 * 3; L = *lum2++; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = - (value ) & 0xFF; - row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = - (value >> 8) & 0xFF; - row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = - (value >> 16) & 0xFF; - row2 += 2*3; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + row2[0 + 0] = row2[3 + 0] = row2[next_row + 0] = + row2[next_row + 3 + 0] = (value) & 0xFF; + row2[0 + 1] = row2[3 + 1] = row2[next_row + 1] = + row2[next_row + 3 + 1] = (value >> 8) & 0xFF; + row2[0 + 2] = row2[3 + 2] = row2[next_row + 2] = + row2[next_row + 3 + 2] = (value >> 16) & 0xFF; + row2 += 2 * 3; } /* @@ -525,22 +514,23 @@ * to the ++'s above),but they need to be at the start * of the line after that. */ - lum += cols; + lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } -static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color32DitherYV12Mod2X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned int* row1 = (unsigned int*) out; - const int next_row = cols*2+mod; - unsigned int* row2 = row1 + 2*next_row; - unsigned char* lum2; + unsigned int *row1 = (unsigned int *) out; + const int next_row = cols * 2 + mod; + unsigned int *row2 = row1 + 2 * next_row; + unsigned char *lum2; int x, y; int cr_r; int crb_g; @@ -552,48 +542,43 @@ mod = (next_row * 3) + mod; y = rows / 2; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - ++cr; ++cb; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + ++cr; + ++cb; L = *lum++; - row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = - (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] = + (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1 += 2; L = *lum++; - row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = - (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row1[0] = row1[1] = row1[next_row] = row1[next_row + 1] = + (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row1 += 2; /* Now, do second row. */ L = *lum2++; - row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = - (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] = + (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2 += 2; L = *lum2++; - row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = - (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + row2[0] = row2[1] = row2[next_row] = row2[next_row + 1] = + (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row2 += 2; } @@ -602,50 +587,52 @@ * to the ++'s above),but they need to be at the start * of the line after that. */ - lum += cols; + lum += cols; lum2 += cols; row1 += mod; row2 += mod; } } -static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color16DitherYUY2Mod1X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned short* row; + unsigned short *row; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; - row = (unsigned short*) out; + row = (unsigned short *) out; y = rows; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - cr += 4; cb += 4; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + cr += 4; + cb += 4; - L = *lum; lum += 2; - *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + *row++ = (unsigned short) (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); - L = *lum; lum += 2; - *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + *row++ = (unsigned short) (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); } @@ -653,49 +640,49 @@ } } -static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color24DitherYUY2Mod1X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { unsigned int value; - unsigned char* row; + unsigned char *row; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; - row = (unsigned char*) out; + row = (unsigned char *) out; mod *= 3; y = rows; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - cr += 4; cb += 4; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + cr += 4; + cb += 4; - L = *lum; lum += 2; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - *row++ = (value ) & 0xFF; - *row++ = (value >> 8) & 0xFF; + L = *lum; + lum += 2; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + *row++ = (value) & 0xFF; + *row++ = (value >> 8) & 0xFF; *row++ = (value >> 16) & 0xFF; - L = *lum; lum += 2; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - *row++ = (value ) & 0xFF; - *row++ = (value >> 8) & 0xFF; + L = *lum; + lum += 2; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + *row++ = (value) & 0xFF; + *row++ = (value >> 8) & 0xFF; *row++ = (value >> 16) & 0xFF; } @@ -703,42 +690,42 @@ } } -static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color32DitherYUY2Mod1X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned int* row; + unsigned int *row; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; - row = (unsigned int*) out; + row = (unsigned int *) out; y = rows; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - cr += 4; cb += 4; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + cr += 4; + cb += 4; - L = *lum; lum += 2; - *row++ = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + *row++ = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); - L = *lum; lum += 2; - *row++ = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + *row++ = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); } @@ -751,13 +738,14 @@ * 16 bits replicated in the upper 16. This means I can write ints and get * the horisontal doubling for free (almost). */ -static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color16DitherYUY2Mod2X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned int* row = (unsigned int*) out; - const int next_row = cols+(mod/2); + unsigned int *row = (unsigned int *) out; + const int next_row = cols + (mod / 2); int x, y; int cr_r; int crb_g; @@ -765,29 +753,30 @@ int cols_2 = cols / 2; y = rows; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - cr += 4; cb += 4; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + cr += 4; + cb += 4; - L = *lum; lum += 2; - row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + row[0] = row[next_row] = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); row++; - L = *lum; lum += 2; - row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + row[0] = row[next_row] = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | + rgb_2_pix[L + cb_b]); row++; } @@ -795,101 +784,101 @@ } } -static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color24DitherYUY2Mod2X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { unsigned int value; - unsigned char* row = out; - const int next_row = (cols*2 + mod) * 3; + unsigned char *row = out; + const int next_row = (cols * 2 + mod) * 3; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; y = rows; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - cr += 4; cb += 4; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + cr += 4; + cb += 4; - L = *lum; lum += 2; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = - (value ) & 0xFF; - row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = - (value >> 8) & 0xFF; - row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = - (value >> 16) & 0xFF; - row += 2*3; + L = *lum; + lum += 2; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + row[0 + 0] = row[3 + 0] = row[next_row + 0] = + row[next_row + 3 + 0] = (value) & 0xFF; + row[0 + 1] = row[3 + 1] = row[next_row + 1] = + row[next_row + 3 + 1] = (value >> 8) & 0xFF; + row[0 + 2] = row[3 + 2] = row[next_row + 2] = + row[next_row + 3 + 2] = (value >> 16) & 0xFF; + row += 2 * 3; - L = *lum; lum += 2; - value = (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); - row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = - (value ) & 0xFF; - row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = - (value >> 8) & 0xFF; - row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = - (value >> 16) & 0xFF; - row += 2*3; + L = *lum; + lum += 2; + value = (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); + row[0 + 0] = row[3 + 0] = row[next_row + 0] = + row[next_row + 3 + 0] = (value) & 0xFF; + row[0 + 1] = row[3 + 1] = row[next_row + 1] = + row[next_row + 3 + 1] = (value >> 8) & 0xFF; + row[0 + 2] = row[3 + 2] = row[next_row + 2] = + row[next_row + 3 + 2] = (value >> 16) & 0xFF; + row += 2 * 3; } row += next_row; } } -static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, - unsigned char *lum, unsigned char *cr, - unsigned char *cb, unsigned char *out, - int rows, int cols, int mod ) +static void +Color32DitherYUY2Mod2X (int *colortab, Uint32 * rgb_2_pix, + unsigned char *lum, unsigned char *cr, + unsigned char *cb, unsigned char *out, + int rows, int cols, int mod) { - unsigned int* row = (unsigned int*) out; - const int next_row = cols*2+mod; + unsigned int *row = (unsigned int *) out; + const int next_row = cols * 2 + mod; int x, y; int cr_r; int crb_g; int cb_b; int cols_2 = cols / 2; - mod+=mod; + mod += mod; y = rows; - while( y-- ) - { + while (y--) { x = cols_2; - while( x-- ) - { + while (x--) { register int L; - cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; - crb_g = 1*768+256 + colortab[ *cr + 1*256 ] - + colortab[ *cb + 2*256 ]; - cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; - cr += 4; cb += 4; + cr_r = 0 * 768 + 256 + colortab[*cr + 0 * 256]; + crb_g = 1 * 768 + 256 + colortab[*cr + 1 * 256] + + colortab[*cb + 2 * 256]; + cb_b = 2 * 768 + 256 + colortab[*cb + 3 * 256]; + cr += 4; + cb += 4; - L = *lum; lum += 2; - row[0] = row[1] = row[next_row] = row[next_row+1] = - (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + row[0] = row[1] = row[next_row] = row[next_row + 1] = + (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row += 2; - L = *lum; lum += 2; - row[0] = row[1] = row[next_row] = row[next_row+1] = - (rgb_2_pix[ L + cr_r ] | - rgb_2_pix[ L + crb_g ] | - rgb_2_pix[ L + cb_b ]); + L = *lum; + lum += 2; + row[0] = row[1] = row[next_row] = row[next_row + 1] = + (rgb_2_pix[L + cr_r] | + rgb_2_pix[L + crb_g] | rgb_2_pix[L + cb_b]); row += 2; @@ -903,396 +892,411 @@ * How many 1 bits are there in the Uint32. * Low performance, do not call often. */ -static int number_of_bits_set( Uint32 a ) +static int +number_of_bits_set (Uint32 a) { - if(!a) return 0; - if(a & 1) return 1 + number_of_bits_set(a >> 1); - return(number_of_bits_set(a >> 1)); + if (!a) + return 0; + if (a & 1) + return 1 + number_of_bits_set (a >> 1); + return (number_of_bits_set (a >> 1)); } /* * How many 0 bits are there at least significant end of Uint32. * Low performance, do not call often. */ -static int free_bits_at_bottom( Uint32 a ) +static int +free_bits_at_bottom (Uint32 a) { - /* assume char is 8 bits */ - if(!a) return sizeof(Uint32) * 8; - if(((Sint32)a) & 1l) return 0; - return 1 + free_bits_at_bottom ( a >> 1); + /* assume char is 8 bits */ + if (!a) + return sizeof (Uint32) * 8; + if (((Sint32) a) & 1l) + return 0; + return 1 + free_bits_at_bottom (a >> 1); } -SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) +SDL_Overlay * +SDL_CreateYUV_SW (_THIS, int width, int height, Uint32 format, + SDL_Surface * display) { - SDL_Overlay *overlay; - struct private_yuvhwdata *swdata; - int *Cr_r_tab; - int *Cr_g_tab; - int *Cb_g_tab; - int *Cb_b_tab; - Uint32 *r_2_pix_alloc; - Uint32 *g_2_pix_alloc; - Uint32 *b_2_pix_alloc; - int i; - int CR, CB; - Uint32 Rmask, Gmask, Bmask; + SDL_Overlay *overlay; + struct private_yuvhwdata *swdata; + int *Cr_r_tab; + int *Cr_g_tab; + int *Cb_g_tab; + int *Cb_b_tab; + Uint32 *r_2_pix_alloc; + Uint32 *g_2_pix_alloc; + Uint32 *b_2_pix_alloc; + int i; + int CR, CB; + Uint32 Rmask, Gmask, Bmask; - /* Only RGB packed pixel conversion supported */ - if ( (display->format->BytesPerPixel != 2) && - (display->format->BytesPerPixel != 3) && - (display->format->BytesPerPixel != 4) ) { - SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); - return(NULL); - } + /* Only RGB packed pixel conversion supported */ + if ((display->format->BytesPerPixel != 2) && + (display->format->BytesPerPixel != 3) && + (display->format->BytesPerPixel != 4)) { + SDL_SetError ("Can't use YUV data on non 16/24/32 bit surfaces"); + return (NULL); + } - /* Verify that we support the format */ - switch (format) { - case SDL_YV12_OVERLAY: - case SDL_IYUV_OVERLAY: - case SDL_YUY2_OVERLAY: - case SDL_UYVY_OVERLAY: - case SDL_YVYU_OVERLAY: - break; - default: - SDL_SetError("Unsupported YUV format"); - return(NULL); - } + /* Verify that we support the format */ + switch (format) { + case SDL_YV12_OVERLAY: + case SDL_IYUV_OVERLAY: + case SDL_YUY2_OVERLAY: + case SDL_UYVY_OVERLAY: + case SDL_YVYU_OVERLAY: + break; + default: + SDL_SetError ("Unsupported YUV format"); + return (NULL); + } - /* Create the overlay structure */ - overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); - if ( overlay == NULL ) { - SDL_OutOfMemory(); - return(NULL); - } - SDL_memset(overlay, 0, (sizeof *overlay)); + /* Create the overlay structure */ + overlay = (SDL_Overlay *) SDL_malloc (sizeof *overlay); + if (overlay == NULL) { + SDL_OutOfMemory (); + return (NULL); + } + SDL_memset (overlay, 0, (sizeof *overlay)); - /* Fill in the basic members */ - overlay->format = format; - overlay->w = width; - overlay->h = height; - - /* Set up the YUV surface function structure */ - overlay->hwfuncs = &sw_yuvfuncs; + /* Fill in the basic members */ + overlay->format = format; + overlay->w = width; + overlay->h = height; - /* Create the pixel data and lookup tables */ - swdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *swdata); - overlay->hwdata = swdata; - if ( swdata == NULL ) { - SDL_OutOfMemory(); - SDL_FreeYUVOverlay(overlay); - return(NULL); - } - swdata->stretch = NULL; - swdata->display = display; - swdata->pixels = (Uint8 *) SDL_malloc(width*height*2); - swdata->colortab = (int *)SDL_malloc(4*256*sizeof(int)); - Cr_r_tab = &swdata->colortab[0*256]; - Cr_g_tab = &swdata->colortab[1*256]; - Cb_g_tab = &swdata->colortab[2*256]; - Cb_b_tab = &swdata->colortab[3*256]; - swdata->rgb_2_pix = (Uint32 *)SDL_malloc(3*768*sizeof(Uint32)); - r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; - g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; - b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; - if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { - SDL_OutOfMemory(); - SDL_FreeYUVOverlay(overlay); - return(NULL); - } + /* Set up the YUV surface function structure */ + overlay->hwfuncs = &sw_yuvfuncs; - /* Generate the tables for the display surface */ - for (i=0; i<256; i++) { - /* Gamma correction (luminescence table) and chroma correction - would be done here. See the Berkeley mpeg_play sources. - */ - CB = CR = (i-128); - Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); - Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); - Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); - Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); - } + /* Create the pixel data and lookup tables */ + swdata = (struct private_yuvhwdata *) SDL_malloc (sizeof *swdata); + overlay->hwdata = swdata; + if (swdata == NULL) { + SDL_OutOfMemory (); + SDL_FreeYUVOverlay (overlay); + return (NULL); + } + swdata->stretch = NULL; + swdata->display = display; + swdata->pixels = (Uint8 *) SDL_malloc (width * height * 2); + swdata->colortab = (int *) SDL_malloc (4 * 256 * sizeof (int)); + Cr_r_tab = &swdata->colortab[0 * 256]; + Cr_g_tab = &swdata->colortab[1 * 256]; + Cb_g_tab = &swdata->colortab[2 * 256]; + Cb_b_tab = &swdata->colortab[3 * 256]; + swdata->rgb_2_pix = (Uint32 *) SDL_malloc (3 * 768 * sizeof (Uint32)); + r_2_pix_alloc = &swdata->rgb_2_pix[0 * 768]; + g_2_pix_alloc = &swdata->rgb_2_pix[1 * 768]; + b_2_pix_alloc = &swdata->rgb_2_pix[2 * 768]; + if (!swdata->pixels || !swdata->colortab || !swdata->rgb_2_pix) { + SDL_OutOfMemory (); + SDL_FreeYUVOverlay (overlay); + return (NULL); + } - /* - * Set up entries 0-255 in rgb-to-pixel value tables. - */ - Rmask = display->format->Rmask; - Gmask = display->format->Gmask; - Bmask = display->format->Bmask; - for ( i=0; i<256; ++i ) { - r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); - r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); - g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); - g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); - b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); - b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); - } + /* Generate the tables for the display surface */ + for (i = 0; i < 256; i++) { + /* Gamma correction (luminescence table) and chroma correction + would be done here. See the Berkeley mpeg_play sources. + */ + CB = CR = (i - 128); + Cr_r_tab[i] = (int) ((0.419 / 0.299) * CR); + Cr_g_tab[i] = (int) (-(0.299 / 0.419) * CR); + Cb_g_tab[i] = (int) (-(0.114 / 0.331) * CB); + Cb_b_tab[i] = (int) ((0.587 / 0.331) * CB); + } + + /* + * Set up entries 0-255 in rgb-to-pixel value tables. + */ + Rmask = display->format->Rmask; + Gmask = display->format->Gmask; + Bmask = display->format->Bmask; + for (i = 0; i < 256; ++i) { + r_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set (Rmask)); + r_2_pix_alloc[i + 256] <<= free_bits_at_bottom (Rmask); + g_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set (Gmask)); + g_2_pix_alloc[i + 256] <<= free_bits_at_bottom (Gmask); + b_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set (Bmask)); + b_2_pix_alloc[i + 256] <<= free_bits_at_bottom (Bmask); + } - /* - * If we have 16-bit output depth, then we double the value - * in the top word. This means that we can write out both - * pixels in the pixel doubling mode with one op. It is - * harmless in the normal case as storing a 32-bit value - * through a short pointer will lose the top bits anyway. - */ - if( display->format->BytesPerPixel == 2 ) { - for ( i=0; i<256; ++i ) { - r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; - g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; - b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; - } - } + /* + * If we have 16-bit output depth, then we double the value + * in the top word. This means that we can write out both + * pixels in the pixel doubling mode with one op. It is + * harmless in the normal case as storing a 32-bit value + * through a short pointer will lose the top bits anyway. + */ + if (display->format->BytesPerPixel == 2) { + for (i = 0; i < 256; ++i) { + r_2_pix_alloc[i + 256] |= (r_2_pix_alloc[i + 256]) << 16; + g_2_pix_alloc[i + 256] |= (g_2_pix_alloc[i + 256]) << 16; + b_2_pix_alloc[i + 256] |= (b_2_pix_alloc[i + 256]) << 16; + } + } - /* - * Spread out the values we have to the rest of the array so that - * we do not need to check for overflow. - */ - for ( i=0; i<256; ++i ) { - r_2_pix_alloc[i] = r_2_pix_alloc[256]; - r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; - g_2_pix_alloc[i] = g_2_pix_alloc[256]; - g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; - b_2_pix_alloc[i] = b_2_pix_alloc[256]; - b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; - } + /* + * Spread out the values we have to the rest of the array so that + * we do not need to check for overflow. + */ + for (i = 0; i < 256; ++i) { + r_2_pix_alloc[i] = r_2_pix_alloc[256]; + r_2_pix_alloc[i + 512] = r_2_pix_alloc[511]; + g_2_pix_alloc[i] = g_2_pix_alloc[256]; + g_2_pix_alloc[i + 512] = g_2_pix_alloc[511]; + b_2_pix_alloc[i] = b_2_pix_alloc[256]; + b_2_pix_alloc[i + 512] = b_2_pix_alloc[511]; + } - /* You have chosen wisely... */ - switch (format) { - case SDL_YV12_OVERLAY: - case SDL_IYUV_OVERLAY: - if ( display->format->BytesPerPixel == 2 ) { -#if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/ - /* inline assembly functions */ - if ( SDL_HasMMX() && (Rmask == 0xF800) && - (Gmask == 0x07E0) && - (Bmask == 0x001F) && - (width & 15) == 0) { + /* You have chosen wisely... */ + switch (format) { + case SDL_YV12_OVERLAY: + case SDL_IYUV_OVERLAY: + if (display->format->BytesPerPixel == 2) { +#if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES */ + /* inline assembly functions */ + if (SDL_HasMMX () && (Rmask == 0xF800) && + (Gmask == 0x07E0) && (Bmask == 0x001F) && (width & 15) == 0) { /*printf("Using MMX 16-bit 565 dither\n");*/ - swdata->Display1X = Color565DitherYV12MMX1X; - } else { + swdata->Display1X = Color565DitherYV12MMX1X; + } else { /*printf("Using C 16-bit dither\n");*/ - swdata->Display1X = Color16DitherYV12Mod1X; - } + swdata->Display1X = Color16DitherYV12Mod1X; + } #else - swdata->Display1X = Color16DitherYV12Mod1X; + swdata->Display1X = Color16DitherYV12Mod1X; #endif - swdata->Display2X = Color16DitherYV12Mod2X; - } - if ( display->format->BytesPerPixel == 3 ) { - swdata->Display1X = Color24DitherYV12Mod1X; - swdata->Display2X = Color24DitherYV12Mod2X; - } - if ( display->format->BytesPerPixel == 4 ) { -#if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/ - /* inline assembly functions */ - if ( SDL_HasMMX() && (Rmask == 0x00FF0000) && - (Gmask == 0x0000FF00) && - (Bmask == 0x000000FF) && - (width & 15) == 0) { + swdata->Display2X = Color16DitherYV12Mod2X; + } + if (display->format->BytesPerPixel == 3) { + swdata->Display1X = Color24DitherYV12Mod1X; + swdata->Display2X = Color24DitherYV12Mod2X; + } + if (display->format->BytesPerPixel == 4) { +#if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES */ + /* inline assembly functions */ + if (SDL_HasMMX () && (Rmask == 0x00FF0000) && + (Gmask == 0x0000FF00) && + (Bmask == 0x000000FF) && (width & 15) == 0) { /*printf("Using MMX 32-bit dither\n");*/ - swdata->Display1X = ColorRGBDitherYV12MMX1X; - } else { + swdata->Display1X = ColorRGBDitherYV12MMX1X; + } else { /*printf("Using C 32-bit dither\n");*/ - swdata->Display1X = Color32DitherYV12Mod1X; - } + swdata->Display1X = Color32DitherYV12Mod1X; + } #else - swdata->Display1X = Color32DitherYV12Mod1X; + swdata->Display1X = Color32DitherYV12Mod1X; #endif - swdata->Display2X = Color32DitherYV12Mod2X; - } - break; - case SDL_YUY2_OVERLAY: - case SDL_UYVY_OVERLAY: - case SDL_YVYU_OVERLAY: - if ( display->format->BytesPerPixel == 2 ) { - swdata->Display1X = Color16DitherYUY2Mod1X; - swdata->Display2X = Color16DitherYUY2Mod2X; - } - if ( display->format->BytesPerPixel == 3 ) { - swdata->Display1X = Color24DitherYUY2Mod1X; - swdata->Display2X = Color24DitherYUY2Mod2X; - } - if ( display->format->BytesPerPixel == 4 ) { - swdata->Display1X = Color32DitherYUY2Mod1X; - swdata->Display2X = Color32DitherYUY2Mod2X; - } - break; - default: - /* We should never get here (caught above) */ - break; - } + swdata->Display2X = Color32DitherYV12Mod2X; + } + break; + case SDL_YUY2_OVERLAY: + case SDL_UYVY_OVERLAY: + case SDL_YVYU_OVERLAY: + if (display->format->BytesPerPixel == 2) { + swdata->Display1X = Color16DitherYUY2Mod1X; + swdata->Display2X = Color16DitherYUY2Mod2X; + } + if (display->format->BytesPerPixel == 3) { + swdata->Display1X = Color24DitherYUY2Mod1X; + swdata->Display2X = Color24DitherYUY2Mod2X; + } + if (display->format->BytesPerPixel == 4) { + swdata->Display1X = Color32DitherYUY2Mod1X; + swdata->Display2X = Color32DitherYUY2Mod2X; + } + break; + default: + /* We should never get here (caught above) */ + break; + } - /* Find the pitch and offset values for the overlay */ - overlay->pitches = swdata->pitches; - overlay->pixels = swdata->planes; - switch (format) { - case SDL_YV12_OVERLAY: - case SDL_IYUV_OVERLAY: - overlay->pitches[0] = overlay->w; - overlay->pitches[1] = overlay->pitches[0] / 2; - overlay->pitches[2] = overlay->pitches[0] / 2; - overlay->pixels[0] = swdata->pixels; - overlay->pixels[1] = overlay->pixels[0] + - overlay->pitches[0] * overlay->h; - overlay->pixels[2] = overlay->pixels[1] + - overlay->pitches[1] * overlay->h / 2; - overlay->planes = 3; - break; - case SDL_YUY2_OVERLAY: - case SDL_UYVY_OVERLAY: - case SDL_YVYU_OVERLAY: - overlay->pitches[0] = overlay->w*2; - overlay->pixels[0] = swdata->pixels; - overlay->planes = 1; - break; - default: - /* We should never get here (caught above) */ - break; - } + /* Find the pitch and offset values for the overlay */ + overlay->pitches = swdata->pitches; + overlay->pixels = swdata->planes; + switch (format) { + case SDL_YV12_OVERLAY: + case SDL_IYUV_OVERLAY: + overlay->pitches[0] = overlay->w; + overlay->pitches[1] = overlay->pitches[0] / 2; + overlay->pitches[2] = overlay->pitches[0] / 2; + overlay->pixels[0] = swdata->pixels; + overlay->pixels[1] = overlay->pixels[0] + + overlay->pitches[0] * overlay->h; + overlay->pixels[2] = overlay->pixels[1] + + overlay->pitches[1] * overlay->h / 2; + overlay->planes = 3; + break; + case SDL_YUY2_OVERLAY: + case SDL_UYVY_OVERLAY: + case SDL_YVYU_OVERLAY: + overlay->pitches[0] = overlay->w * 2; + overlay->pixels[0] = swdata->pixels; + overlay->planes = 1; + break; + default: + /* We should never get here (caught above) */ + break; + } - /* We're all done.. */ - return(overlay); + /* We're all done.. */ + return (overlay); } -int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) +int +SDL_LockYUV_SW (_THIS, SDL_Overlay * overlay) { - return(0); + return (0); } -void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) +void +SDL_UnlockYUV_SW (_THIS, SDL_Overlay * overlay) { - return; + return; } -int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst) +int +SDL_DisplayYUV_SW (_THIS, SDL_Overlay * overlay, SDL_Rect * src, + SDL_Rect * dst) { - struct private_yuvhwdata *swdata; - int stretch; - int scale_2x; - SDL_Surface *display; - Uint8 *lum, *Cr, *Cb; - Uint8 *dstp; - int mod; + struct private_yuvhwdata *swdata; + int stretch; + int scale_2x; + SDL_Surface *display; + Uint8 *lum, *Cr, *Cb; + Uint8 *dstp; + int mod; - swdata = overlay->hwdata; - stretch = 0; - scale_2x = 0; - if ( src->x || src->y || src->w < overlay->w || src->h < overlay->h ) { - /* The source rectangle has been clipped. - Using a scratch surface is easier than adding clipped - source support to all the blitters, plus that would - slow them down in the general unclipped case. - */ - stretch = 1; - } else if ( (src->w != dst->w) || (src->h != dst->h) ) { - if ( (dst->w == 2*src->w) && - (dst->h == 2*src->h) ) { - scale_2x = 1; - } else { - stretch = 1; - } - } - if ( stretch ) { - if ( ! swdata->stretch ) { - display = swdata->display; - swdata->stretch = SDL_CreateRGBSurface( - SDL_SWSURFACE, - overlay->w, overlay->h, - display->format->BitsPerPixel, - display->format->Rmask, - display->format->Gmask, - display->format->Bmask, 0); - if ( ! swdata->stretch ) { - return(-1); - } - } - display = swdata->stretch; - } else { - display = swdata->display; - } - switch (overlay->format) { - case SDL_YV12_OVERLAY: - lum = overlay->pixels[0]; - Cr = overlay->pixels[1]; - Cb = overlay->pixels[2]; - break; - case SDL_IYUV_OVERLAY: - lum = overlay->pixels[0]; - Cr = overlay->pixels[2]; - Cb = overlay->pixels[1]; - break; - case SDL_YUY2_OVERLAY: - lum = overlay->pixels[0]; - Cr = lum + 3; - Cb = lum + 1; - break; - case SDL_UYVY_OVERLAY: - lum = overlay->pixels[0]+1; - Cr = lum + 1; - Cb = lum - 1; - break; - case SDL_YVYU_OVERLAY: - lum = overlay->pixels[0]; - Cr = lum + 1; - Cb = lum + 3; - break; - default: - SDL_SetError("Unsupported YUV format in blit"); - return(-1); - } - if ( SDL_MUSTLOCK(display) ) { - if ( SDL_LockSurface(display) < 0 ) { - return(-1); - } - } - if ( stretch ) { - dstp = (Uint8 *)swdata->stretch->pixels; - } else { - dstp = (Uint8 *)display->pixels - + dst->x * display->format->BytesPerPixel - + dst->y * display->pitch; - } - mod = (display->pitch / display->format->BytesPerPixel); + swdata = overlay->hwdata; + stretch = 0; + scale_2x = 0; + if (src->x || src->y || src->w < overlay->w || src->h < overlay->h) { + /* The source rectangle has been clipped. + Using a scratch surface is easier than adding clipped + source support to all the blitters, plus that would + slow them down in the general unclipped case. + */ + stretch = 1; + } else if ((src->w != dst->w) || (src->h != dst->h)) { + if ((dst->w == 2 * src->w) && (dst->h == 2 * src->h)) { + scale_2x = 1; + } else { + stretch = 1; + } + } + if (stretch) { + if (!swdata->stretch) { + display = swdata->display; + swdata->stretch = SDL_CreateRGBSurface (SDL_SWSURFACE, + overlay->w, + overlay->h, + display->format-> + BitsPerPixel, + display->format-> + Rmask, + display->format-> + Gmask, + display->format-> + Bmask, 0); + if (!swdata->stretch) { + return (-1); + } + } + display = swdata->stretch; + } else { + display = swdata->display; + } + switch (overlay->format) { + case SDL_YV12_OVERLAY: + lum = overlay->pixels[0]; + Cr = overlay->pixels[1]; + Cb = overlay->pixels[2]; + break; + case SDL_IYUV_OVERLAY: + lum = overlay->pixels[0]; + Cr = overlay->pixels[2]; + Cb = overlay->pixels[1]; + break; + case SDL_YUY2_OVERLAY: + lum = overlay->pixels[0]; + Cr = lum + 3; + Cb = lum + 1; + break; + case SDL_UYVY_OVERLAY: + lum = overlay->pixels[0] + 1; + Cr = lum + 1; + Cb = lum - 1; + break; + case SDL_YVYU_OVERLAY: + lum = overlay->pixels[0]; + Cr = lum + 1; + Cb = lum + 3; + break; + default: + SDL_SetError ("Unsupported YUV format in blit"); + return (-1); + } + if (SDL_MUSTLOCK (display)) { + if (SDL_LockSurface (display) < 0) { + return (-1); + } + } + if (stretch) { + dstp = (Uint8 *) swdata->stretch->pixels; + } else { + dstp = (Uint8 *) display->pixels + + dst->x * display->format->BytesPerPixel + + dst->y * display->pitch; + } + mod = (display->pitch / display->format->BytesPerPixel); - if ( scale_2x ) { - mod -= (overlay->w * 2); - swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, - lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); - } else { - mod -= overlay->w; - swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, - lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); - } - if ( SDL_MUSTLOCK(display) ) { - SDL_UnlockSurface(display); - } - if ( stretch ) { - display = swdata->display; - SDL_SoftStretch(swdata->stretch, src, display, dst); - } - SDL_UpdateRects(display, 1, dst); + if (scale_2x) { + mod -= (overlay->w * 2); + swdata->Display2X (swdata->colortab, swdata->rgb_2_pix, + lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); + } else { + mod -= overlay->w; + swdata->Display1X (swdata->colortab, swdata->rgb_2_pix, + lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); + } + if (SDL_MUSTLOCK (display)) { + SDL_UnlockSurface (display); + } + if (stretch) { + display = swdata->display; + SDL_SoftStretch (swdata->stretch, src, display, dst); + } + SDL_UpdateRects (display, 1, dst); - return(0); + return (0); } -void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) +void +SDL_FreeYUV_SW (_THIS, SDL_Overlay * overlay) { - struct private_yuvhwdata *swdata; + struct private_yuvhwdata *swdata; - swdata = overlay->hwdata; - if ( swdata ) { - if ( swdata->stretch ) { - SDL_FreeSurface(swdata->stretch); - } - if ( swdata->pixels ) { - SDL_free(swdata->pixels); - } - if ( swdata->colortab ) { - SDL_free(swdata->colortab); - } - if ( swdata->rgb_2_pix ) { - SDL_free(swdata->rgb_2_pix); - } - SDL_free(swdata); - } + swdata = overlay->hwdata; + if (swdata) { + if (swdata->stretch) { + SDL_FreeSurface (swdata->stretch); + } + if (swdata->pixels) { + SDL_free (swdata->pixels); + } + if (swdata->colortab) { + SDL_free (swdata->colortab); + } + if (swdata->rgb_2_pix) { + SDL_free (swdata->rgb_2_pix); + } + SDL_free (swdata); + } } + +/* vi: set ts=4 sw=4 expandtab: */