yuv_rgb.c File Reference
#include "../../SDL_internal.h"#include "yuv_rgb.h"#include "SDL_cpuinfo.h"#include "yuv_rgb_std_func.h"
Include dependency graph for yuv_rgb.c:
Go to the source code of this file.
Data Structures | |
| struct | RGB2YUVParam |
| struct | YUV2RGBParam |
Functions | |
| static uint8_t | clampU8 (int32_t v) |
| void | rgb24_yuv420_std (uint32_t width, uint32_t height, const uint8_t *RGB, uint32_t RGB_stride, uint8_t *Y, uint8_t *U, uint8_t *V, uint32_t Y_stride, uint32_t UV_stride, YCbCrType yuv_type) |
Variables | |
| static const YUV2RGBParam | YUV2RGB [3] |
| static const RGB2YUVParam | RGB2YUV [3] |
Macro Definition Documentation
| #define PRECISION 6 |
Definition at line 10 of file yuv_rgb.c.
Referenced by clampU8(), and rgb24_yuv420_std().
| #define PRECISION_FACTOR (1<<PRECISION) |
| #define RGB_FORMAT RGB_FORMAT_RGB565 |
| #define RGB_FORMAT RGB_FORMAT_RGB24 |
| #define RGB_FORMAT RGB_FORMAT_RGBA |
| #define RGB_FORMAT RGB_FORMAT_BGRA |
| #define RGB_FORMAT RGB_FORMAT_ARGB |
| #define RGB_FORMAT RGB_FORMAT_ABGR |
| #define RGB_FORMAT RGB_FORMAT_RGB565 |
| #define RGB_FORMAT RGB_FORMAT_RGB24 |
| #define RGB_FORMAT RGB_FORMAT_RGBA |
| #define RGB_FORMAT RGB_FORMAT_BGRA |
| #define RGB_FORMAT RGB_FORMAT_ARGB |
| #define RGB_FORMAT RGB_FORMAT_ABGR |
| #define RGB_FORMAT RGB_FORMAT_RGB565 |
| #define RGB_FORMAT RGB_FORMAT_RGB24 |
| #define RGB_FORMAT RGB_FORMAT_RGBA |
| #define RGB_FORMAT RGB_FORMAT_BGRA |
| #define RGB_FORMAT RGB_FORMAT_ARGB |
| #define RGB_FORMAT RGB_FORMAT_ABGR |
| #define STD_FUNCTION_NAME yuv420_rgb565_std |
| #define STD_FUNCTION_NAME yuv420_rgb24_std |
| #define STD_FUNCTION_NAME yuv420_rgba_std |
| #define STD_FUNCTION_NAME yuv420_bgra_std |
| #define STD_FUNCTION_NAME yuv420_argb_std |
| #define STD_FUNCTION_NAME yuv420_abgr_std |
| #define STD_FUNCTION_NAME yuv422_rgb565_std |
| #define STD_FUNCTION_NAME yuv422_rgb24_std |
| #define STD_FUNCTION_NAME yuv422_rgba_std |
| #define STD_FUNCTION_NAME yuv422_bgra_std |
| #define STD_FUNCTION_NAME yuv422_argb_std |
| #define STD_FUNCTION_NAME yuv422_abgr_std |
| #define STD_FUNCTION_NAME yuvnv12_rgb565_std |
| #define STD_FUNCTION_NAME yuvnv12_rgb24_std |
| #define STD_FUNCTION_NAME yuvnv12_rgba_std |
| #define STD_FUNCTION_NAME yuvnv12_bgra_std |
| #define STD_FUNCTION_NAME yuvnv12_argb_std |
| #define STD_FUNCTION_NAME yuvnv12_abgr_std |
| #define V | ( | value | ) | (int16_t)((value*PRECISION_FACTOR)+0.5) |
Definition at line 35 of file yuv_rgb.c.
Referenced by ConvertRGBtoPacked4(), ConvertRGBtoPlanar2x2(), RGBtoYUV(), SDL_ConvertPixels_UYVY_to_YUY2(), SDL_ConvertPixels_UYVY_to_YVYU(), SDL_ConvertPixels_YUY2_to_UYVY(), SDL_ConvertPixels_YUY2_to_YVYU(), SDL_ConvertPixels_YVYU_to_UYVY(), and SDL_ConvertPixels_YVYU_to_YUY2().
| #define YUV_FORMAT YUV_FORMAT_420 |
| #define YUV_FORMAT YUV_FORMAT_420 |
| #define YUV_FORMAT YUV_FORMAT_420 |
| #define YUV_FORMAT YUV_FORMAT_420 |
| #define YUV_FORMAT YUV_FORMAT_420 |
| #define YUV_FORMAT YUV_FORMAT_420 |
| #define YUV_FORMAT YUV_FORMAT_422 |
| #define YUV_FORMAT YUV_FORMAT_422 |
| #define YUV_FORMAT YUV_FORMAT_422 |
| #define YUV_FORMAT YUV_FORMAT_422 |
| #define YUV_FORMAT YUV_FORMAT_422 |
| #define YUV_FORMAT YUV_FORMAT_422 |
| #define YUV_FORMAT YUV_FORMAT_NV12 |
| #define YUV_FORMAT YUV_FORMAT_NV12 |
| #define YUV_FORMAT YUV_FORMAT_NV12 |
| #define YUV_FORMAT YUV_FORMAT_NV12 |
| #define YUV_FORMAT YUV_FORMAT_NV12 |
| #define YUV_FORMAT YUV_FORMAT_NV12 |
Function Documentation
Definition at line 75 of file yuv_rgb.c.
References PRECISION, and PRECISION_FACTOR.
Referenced by rgb24_yuv420_std().
{
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,
47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,
91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,
126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,
159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,
225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,
255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255
};
}
| void rgb24_yuv420_std | ( | uint32_t | width, |
| uint32_t | height, | ||
| const uint8_t * | RGB, | ||
| uint32_t | RGB_stride, | ||
| uint8_t * | Y, | ||
| uint8_t * | U, | ||
| uint8_t * | V, | ||
| uint32_t | Y_stride, | ||
| uint32_t | UV_stride, | ||
| YCbCrType | yuv_type | ||
| ) |
Definition at line 186 of file yuv_rgb.c.
References clampU8(), RGB2YUVParam::matrix, PRECISION, and RGB2YUVParam::y_shift.
Referenced by SDL_ConvertPixels_RGB_to_YUV().
{
for(y=0; y<(height-1); y+=2)
{
*rgb_ptr2=RGB+(y+1)*RGB_stride;
uint8_t *y_ptr1=Y+y*Y_stride,
*y_ptr2=Y+(y+1)*Y_stride,
*u_ptr=U+(y/2)*UV_stride,
*v_ptr=V+(y/2)*UV_stride;
for(x=0; x<(width-1); x+=2)
{
// compute yuv for the four pixels, u and v values are summed
int32_t y_tmp, u_tmp, v_tmp;
y_tmp = param->matrix[0][0]*rgb_ptr1[0] + param->matrix[0][1]*rgb_ptr1[1] + param->matrix[0][2]*rgb_ptr1[2];
u_tmp = param->matrix[1][0]*rgb_ptr1[0] + param->matrix[1][1]*rgb_ptr1[1] + param->matrix[1][2]*rgb_ptr1[2];
v_tmp = param->matrix[2][0]*rgb_ptr1[0] + param->matrix[2][1]*rgb_ptr1[1] + param->matrix[2][2]*rgb_ptr1[2];
y_tmp = param->matrix[0][0]*rgb_ptr1[3] + param->matrix[0][1]*rgb_ptr1[4] + param->matrix[0][2]*rgb_ptr1[5];
u_tmp += param->matrix[1][0]*rgb_ptr1[3] + param->matrix[1][1]*rgb_ptr1[4] + param->matrix[1][2]*rgb_ptr1[5];
v_tmp += param->matrix[2][0]*rgb_ptr1[3] + param->matrix[2][1]*rgb_ptr1[4] + param->matrix[2][2]*rgb_ptr1[5];
y_tmp = param->matrix[0][0]*rgb_ptr2[0] + param->matrix[0][1]*rgb_ptr2[1] + param->matrix[0][2]*rgb_ptr2[2];
u_tmp += param->matrix[1][0]*rgb_ptr2[0] + param->matrix[1][1]*rgb_ptr2[1] + param->matrix[1][2]*rgb_ptr2[2];
v_tmp += param->matrix[2][0]*rgb_ptr2[0] + param->matrix[2][1]*rgb_ptr2[1] + param->matrix[2][2]*rgb_ptr2[2];
y_tmp = param->matrix[0][0]*rgb_ptr2[3] + param->matrix[0][1]*rgb_ptr2[4] + param->matrix[0][2]*rgb_ptr2[5];
u_tmp += param->matrix[1][0]*rgb_ptr2[3] + param->matrix[1][1]*rgb_ptr2[4] + param->matrix[1][2]*rgb_ptr2[5];
v_tmp += param->matrix[2][0]*rgb_ptr2[3] + param->matrix[2][1]*rgb_ptr2[4] + param->matrix[2][2]*rgb_ptr2[5];
rgb_ptr1 += 6;
rgb_ptr2 += 6;
y_ptr1 += 2;
y_ptr2 += 2;
u_ptr += 1;
v_ptr += 1;
}
}
}
Variable Documentation
|
static |
Initial value:
{
{ 0, {{V(0.299), V(0.587), V(0.114)}, {-V(0.1687), -V(0.3313), V(0.5)}, {V(0.5), -V(0.4187), -V(0.0813)}}},
{ 16, {{V(0.2568), V(0.5041), V(0.0979)}, {-V(0.1482), -V(0.291), V(0.4392)}, {V(0.4392), -V(0.3678), -V(0.0714)}}},
{ 16, {{V(0.1826), V(0.6142), V(0.062)}, {-V(0.1006), -V(0.3386), V(0.4392)}, {V(0.4392), -V(0.3989), -V(0.0403)}}}
}
|
static |
Initial value:
{
}
Definition at line 42 of file yuv_rgb.c.
Referenced by SSE_FUNCTION_NAME(), and STD_FUNCTION_NAME().
