SDL  2.0
Data Structures | Macros | Functions | Variables
SDL_yuv.c File Reference
#include "../SDL_internal.h"
#include "SDL_endian.h"
#include "SDL_video.h"
#include "SDL_pixels_c.h"
#include "SDL_yuv_c.h"
#include "yuv2rgb/yuv_rgb.h"
+ Include dependency graph for SDL_yuv.c:

Go to the source code of this file.

Data Structures

struct  RGB2YUVFactors

Macros

#define SDL_YUV_SD_THRESHOLD   576
#define MAKE_Y(r, g, b)   (Uint8)((int)(cvt->y[0] * (r) + cvt->y[1] * (g) + cvt->y[2] * (b) + 0.5f) + cvt->y_offset)
#define MAKE_U(r, g, b)   (Uint8)((int)(cvt->u[0] * (r) + cvt->u[1] * (g) + cvt->u[2] * (b) + 0.5f) + 128)
#define MAKE_V(r, g, b)   (Uint8)((int)(cvt->v[0] * (r) + cvt->v[1] * (g) + cvt->v[2] * (b) + 0.5f) + 128)
#define READ_2x2_PIXELS
#define READ_2x1_PIXELS
#define READ_1x2_PIXELS
#define READ_1x1_PIXEL
#define READ_TWO_RGB_PIXELS
#define READ_ONE_RGB_PIXEL   READ_1x1_PIXEL
#define PACKED4_TO_PACKED4_ROW_SSE2(shuffle)

Functions

void SDL_SetYUVConversionMode (SDL_YUV_CONVERSION_MODE mode)
 Set the YUV conversion mode.
SDL_YUV_CONVERSION_MODE SDL_GetYUVConversionMode ()
 Get the YUV conversion mode.
SDL_YUV_CONVERSION_MODE SDL_GetYUVConversionModeForResolution (int width, int height)
 Get the YUV conversion mode, returning the correct mode for the resolution when the current conversion mode is SDL_YUV_CONVERSION_AUTOMATIC.
static int GetYUVConversionType (int width, int height, YCbCrType *yuv_type)
static SDL_bool IsPlanar2x2Format (Uint32 format)
static SDL_bool IsPacked4Format (Uint32 format)
static int GetYUVPlanes (int width, int height, Uint32 format, const void *yuv, int yuv_pitch, const Uint8 **y, const Uint8 **u, const Uint8 **v, Uint32 *y_stride, Uint32 *uv_stride)
static SDL_bool yuv_rgb_sse (Uint32 src_format, Uint32 dst_format, Uint32 width, Uint32 height, const Uint8 *y, const Uint8 *u, const Uint8 *v, Uint32 y_stride, Uint32 uv_stride, Uint8 *rgb, Uint32 rgb_stride, YCbCrType yuv_type)
static SDL_bool yuv_rgb_std (Uint32 src_format, Uint32 dst_format, Uint32 width, Uint32 height, const Uint8 *y, const Uint8 *u, const Uint8 *v, Uint32 y_stride, Uint32 uv_stride, Uint8 *rgb, Uint32 rgb_stride, YCbCrType yuv_type)
int SDL_ConvertPixels_YUV_to_RGB (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
static int SDL_ConvertPixels_ARGB8888_to_YUV (int width, int height, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
int SDL_ConvertPixels_RGB_to_YUV (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
static int SDL_ConvertPixels_YUV_to_YUV_Copy (int width, int height, Uint32 format, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_SwapUVPlanes (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_PackUVPlanes_to_NV (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch, SDL_bool reverseUV)
static int SDL_ConvertPixels_SplitNV_to_UVPlanes (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch, SDL_bool reverseUV)
static int SDL_ConvertPixels_SwapNV (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_Planar2x2_to_Planar2x2 (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
static int SDL_ConvertPixels_YUY2_to_UYVY (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_YUY2_to_YVYU (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_UYVY_to_YUY2 (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_UYVY_to_YVYU (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_YVYU_to_YUY2 (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_YVYU_to_UYVY (int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
static int SDL_ConvertPixels_Packed4_to_Packed4 (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
static int SDL_ConvertPixels_Planar2x2_to_Packed4 (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
static int SDL_ConvertPixels_Packed4_to_Planar2x2 (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
int SDL_ConvertPixels_YUV_to_YUV (int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)

Variables

static SDL_YUV_CONVERSION_MODE SDL_YUV_ConversionMode = SDL_YUV_CONVERSION_BT601

Macro Definition Documentation

#define MAKE_U (   r,
  g,
  b 
)    (Uint8)((int)(cvt->u[0] * (r) + cvt->u[1] * (g) + cvt->u[2] * (b) + 0.5f) + 128)

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define MAKE_V (   r,
  g,
  b 
)    (Uint8)((int)(cvt->v[0] * (r) + cvt->v[1] * (g) + cvt->v[2] * (b) + 0.5f) + 128)

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define MAKE_Y (   r,
  g,
  b 
)    (Uint8)((int)(cvt->y[0] * (r) + cvt->y[1] * (g) + cvt->y[2] * (b) + 0.5f) + cvt->y_offset)

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define PACKED4_TO_PACKED4_ROW_SSE2 (   shuffle)
Value:
while (x >= 4) { \
__m128i yuv = _mm_loadu_si128((__m128i*)srcYUV); \
__m128i lo = _mm_unpacklo_epi8(yuv, _mm_setzero_si128()); \
__m128i hi = _mm_unpackhi_epi8(yuv, _mm_setzero_si128()); \
lo = _mm_shufflelo_epi16(lo, shuffle); \
lo = _mm_shufflehi_epi16(lo, shuffle); \
hi = _mm_shufflelo_epi16(hi, shuffle); \
hi = _mm_shufflehi_epi16(hi, shuffle); \
yuv = _mm_packus_epi16(lo, hi); \
_mm_storeu_si128((__m128i*)dstYUV, yuv); \
srcYUV += 16; \
dstYUV += 16; \
x -= 4; \
} \

Definition at line 1224 of file SDL_yuv.c.

Referenced by 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 READ_1x1_PIXEL
Value:
const Uint32 p = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 r = (p & 0x00ff0000) >> 16; \
const Uint32 g = (p & 0x0000ff00) >> 8; \
const Uint32 b = (p & 0x000000ff); \

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define READ_1x2_PIXELS
Value:
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 p2 = ((const Uint32 *)curr_row)[2 * i + 1]; \
const Uint32 r = ((p1 & 0x00ff0000) + (p2 & 0x00ff0000)) >> 17; \
const Uint32 g = ((p1 & 0x0000ff00) + (p2 & 0x0000ff00)) >> 9; \
const Uint32 b = ((p1 & 0x000000ff) + (p2 & 0x000000ff)) >> 1; \

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define READ_2x1_PIXELS
Value:
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 p2 = ((const Uint32 *)next_row)[2 * i]; \
const Uint32 r = ((p1 & 0x00ff0000) + (p2 & 0x00ff0000)) >> 17; \
const Uint32 g = ((p1 & 0x0000ff00) + (p2 & 0x0000ff00)) >> 9; \
const Uint32 b = ((p1 & 0x000000ff) + (p2 & 0x000000ff)) >> 1; \

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define READ_2x2_PIXELS
Value:
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 p2 = ((const Uint32 *)curr_row)[2 * i + 1]; \
const Uint32 p3 = ((const Uint32 *)next_row)[2 * i]; \
const Uint32 p4 = ((const Uint32 *)next_row)[2 * i + 1]; \
const Uint32 r = ((p1 & 0x00ff0000) + (p2 & 0x00ff0000) + (p3 & 0x00ff0000) + (p4 & 0x00ff0000)) >> 18; \
const Uint32 g = ((p1 & 0x0000ff00) + (p2 & 0x0000ff00) + (p3 & 0x0000ff00) + (p4 & 0x0000ff00)) >> 10; \
const Uint32 b = ((p1 & 0x000000ff) + (p2 & 0x000000ff) + (p3 & 0x000000ff) + (p4 & 0x000000ff)) >> 2; \

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define READ_ONE_RGB_PIXEL   READ_1x1_PIXEL

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define READ_TWO_RGB_PIXELS
Value:
const Uint32 p = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 r = (p & 0x00ff0000) >> 16; \
const Uint32 g = (p & 0x0000ff00) >> 8; \
const Uint32 b = (p & 0x000000ff); \
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i + 1]; \
const Uint32 r1 = (p1 & 0x00ff0000) >> 16; \
const Uint32 g1 = (p1 & 0x0000ff00) >> 8; \
const Uint32 b1 = (p1 & 0x000000ff); \
const Uint32 R = (r + r1)/2; \
const Uint32 G = (g + g1)/2; \
const Uint32 B = (b + b1)/2; \

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV().

#define SDL_YUV_SD_THRESHOLD   576

Definition at line 30 of file SDL_yuv.c.

Referenced by SDL_GetYUVConversionModeForResolution().

Function Documentation

static int GetYUVConversionType ( int  width,
int  height,
YCbCrType *  yuv_type 
)
static

Definition at line 59 of file SDL_yuv.c.

References SDL_GetYUVConversionModeForResolution, SDL_SetError, SDL_YUV_CONVERSION_BT601, SDL_YUV_CONVERSION_BT709, SDL_YUV_CONVERSION_JPEG, YCBCR_601, YCBCR_709, and YCBCR_JPEG.

Referenced by SDL_ConvertPixels_RGB_to_YUV(), and SDL_ConvertPixels_YUV_to_RGB().

{
switch (SDL_GetYUVConversionModeForResolution(width, height)) {
case SDL_YUV_CONVERSION_JPEG:
*yuv_type = YCBCR_JPEG;
break;
case SDL_YUV_CONVERSION_BT601:
*yuv_type = YCBCR_601;
break;
case SDL_YUV_CONVERSION_BT709:
*yuv_type = YCBCR_709;
break;
default:
return SDL_SetError("Unexpected YUV conversion mode");
}
return 0;
}
static int GetYUVPlanes ( int  width,
int  height,
Uint32  format,
const void *  yuv,
int  yuv_pitch,
const Uint8 **  y,
const Uint8 **  u,
const Uint8 **  v,
Uint32 *  y_stride,
Uint32 *  uv_stride 
)
static

Definition at line 92 of file SDL_yuv.c.

References NULL, SDL_GetPixelFormatName, SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, SDL_PIXELFORMAT_UYVY, SDL_PIXELFORMAT_YUY2, SDL_PIXELFORMAT_YV12, SDL_PIXELFORMAT_YVYU, and SDL_SetError.

Referenced by SDL_ConvertPixels_ARGB8888_to_YUV(), SDL_ConvertPixels_Packed4_to_Planar2x2(), SDL_ConvertPixels_Planar2x2_to_Packed4(), SDL_ConvertPixels_RGB_to_YUV(), and SDL_ConvertPixels_YUV_to_RGB().

{
const Uint8 *planes[3] = { NULL, NULL, NULL };
int pitches[3] = { 0, 0, 0 };
switch (format) {
case SDL_PIXELFORMAT_YV12:
case SDL_PIXELFORMAT_IYUV:
pitches[0] = yuv_pitch;
pitches[1] = (pitches[0] + 1) / 2;
pitches[2] = (pitches[0] + 1) / 2;
planes[0] = (const Uint8 *)yuv;
planes[1] = planes[0] + pitches[0] * height;
planes[2] = planes[1] + pitches[1] * ((height + 1) / 2);
break;
case SDL_PIXELFORMAT_YUY2:
case SDL_PIXELFORMAT_UYVY:
case SDL_PIXELFORMAT_YVYU:
pitches[0] = yuv_pitch;
planes[0] = (const Uint8 *)yuv;
break;
case SDL_PIXELFORMAT_NV12:
case SDL_PIXELFORMAT_NV21:
pitches[0] = yuv_pitch;
pitches[1] = 2 * ((pitches[0] + 1) / 2);
planes[0] = (const Uint8 *)yuv;
planes[1] = planes[0] + pitches[0] * height;
break;
default:
return SDL_SetError("GetYUVPlanes(): Unsupported YUV format: %s", SDL_GetPixelFormatName(format));
}
switch (format) {
case SDL_PIXELFORMAT_YV12:
*y = planes[0];
*y_stride = pitches[0];
*v = planes[1];
*u = planes[2];
*uv_stride = pitches[1];
break;
case SDL_PIXELFORMAT_IYUV:
*y = planes[0];
*y_stride = pitches[0];
*v = planes[2];
*u = planes[1];
*uv_stride = pitches[1];
break;
case SDL_PIXELFORMAT_YUY2:
*y = planes[0];
*y_stride = pitches[0];
*v = *y + 3;
*u = *y + 1;
*uv_stride = pitches[0];
break;
case SDL_PIXELFORMAT_UYVY:
*y = planes[0] + 1;
*y_stride = pitches[0];
*v = *y + 1;
*u = *y - 1;
*uv_stride = pitches[0];
break;
case SDL_PIXELFORMAT_YVYU:
*y = planes[0];
*y_stride = pitches[0];
*v = *y + 1;
*u = *y + 3;
*uv_stride = pitches[0];
break;
case SDL_PIXELFORMAT_NV12:
*y = planes[0];
*y_stride = pitches[0];
*u = planes[1];
*v = *u + 1;
*uv_stride = pitches[1];
break;
case SDL_PIXELFORMAT_NV21:
*y = planes[0];
*y_stride = pitches[0];
*v = planes[1];
*u = *v + 1;
*uv_stride = pitches[1];
break;
default:
/* Should have caught this above */
return SDL_SetError("GetYUVPlanes[2]: Unsupported YUV format: %s", SDL_GetPixelFormatName(format));
}
return 0;
}
static SDL_bool IsPacked4Format ( Uint32  format)
static

Definition at line 85 of file SDL_yuv.c.

References SDL_PIXELFORMAT_UYVY, SDL_PIXELFORMAT_YUY2, and SDL_PIXELFORMAT_YVYU.

Referenced by SDL_ConvertPixels_YUV_to_YUV(), and SDL_ConvertPixels_YUV_to_YUV_Copy().

{
return (format == SDL_PIXELFORMAT_YUY2 ||
format == SDL_PIXELFORMAT_UYVY ||
format == SDL_PIXELFORMAT_YVYU);
}
static SDL_bool IsPlanar2x2Format ( Uint32  format)
static

Definition at line 77 of file SDL_yuv.c.

References SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, and SDL_PIXELFORMAT_YV12.

Referenced by SDL_ConvertPixels_YUV_to_YUV(), and SDL_ConvertPixels_YUV_to_YUV_Copy().

{
return (format == SDL_PIXELFORMAT_YV12 ||
format == SDL_PIXELFORMAT_IYUV ||
format == SDL_PIXELFORMAT_NV12 ||
format == SDL_PIXELFORMAT_NV21);
}
static int SDL_ConvertPixels_ARGB8888_to_YUV ( int  width,
int  height,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)
static

Definition at line 458 of file SDL_yuv.c.

References G, GetYUVPlanes(), i, j, MAKE_U, MAKE_V, MAKE_Y, READ_1x1_PIXEL, READ_1x2_PIXELS, READ_2x1_PIXELS, READ_2x2_PIXELS, READ_ONE_RGB_PIXEL, READ_TWO_RGB_PIXELS, SDL_GetPixelFormatName, SDL_GetYUVConversionModeForResolution, SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, SDL_PIXELFORMAT_UYVY, SDL_PIXELFORMAT_YUY2, SDL_PIXELFORMAT_YV12, SDL_PIXELFORMAT_YVYU, and SDL_SetError.

Referenced by SDL_ConvertPixels_RGB_to_YUV().

{
const int src_pitch_x_2 = src_pitch * 2;
const int height_half = height / 2;
const int height_remainder = (height & 0x1);
const int width_half = width / 2;
const int width_remainder = (width & 0x1);
int i, j;
static struct RGB2YUVFactors RGB2YUVFactorTables[SDL_YUV_CONVERSION_BT709 + 1] =
{
/* ITU-T T.871 (JPEG) */
{
0,
{ 0.2990f, 0.5870f, 0.1140f },
{ -0.1687f, -0.3313f, 0.5000f },
{ 0.5000f, -0.4187f, -0.0813f },
},
/* ITU-R BT.601-7 */
{
16,
{ 0.2568f, 0.5041f, 0.0979f },
{ -0.1482f, -0.2910f, 0.4392f },
{ 0.4392f, -0.3678f, -0.0714f },
},
/* ITU-R BT.709-6 */
{
16,
{ 0.1826f, 0.6142f, 0.0620f },
{-0.1006f, -0.3386f, 0.4392f },
{ 0.4392f, -0.3989f, -0.0403f },
},
};
const struct RGB2YUVFactors *cvt = &RGB2YUVFactorTables[SDL_GetYUVConversionModeForResolution(width, height)];
#define MAKE_Y(r, g, b) (Uint8)((int)(cvt->y[0] * (r) + cvt->y[1] * (g) + cvt->y[2] * (b) + 0.5f) + cvt->y_offset)
#define MAKE_U(r, g, b) (Uint8)((int)(cvt->u[0] * (r) + cvt->u[1] * (g) + cvt->u[2] * (b) + 0.5f) + 128)
#define MAKE_V(r, g, b) (Uint8)((int)(cvt->v[0] * (r) + cvt->v[1] * (g) + cvt->v[2] * (b) + 0.5f) + 128)
#define READ_2x2_PIXELS \
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 p2 = ((const Uint32 *)curr_row)[2 * i + 1]; \
const Uint32 p3 = ((const Uint32 *)next_row)[2 * i]; \
const Uint32 p4 = ((const Uint32 *)next_row)[2 * i + 1]; \
const Uint32 r = ((p1 & 0x00ff0000) + (p2 & 0x00ff0000) + (p3 & 0x00ff0000) + (p4 & 0x00ff0000)) >> 18; \
const Uint32 g = ((p1 & 0x0000ff00) + (p2 & 0x0000ff00) + (p3 & 0x0000ff00) + (p4 & 0x0000ff00)) >> 10; \
const Uint32 b = ((p1 & 0x000000ff) + (p2 & 0x000000ff) + (p3 & 0x000000ff) + (p4 & 0x000000ff)) >> 2; \
#define READ_2x1_PIXELS \
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 p2 = ((const Uint32 *)next_row)[2 * i]; \
const Uint32 r = ((p1 & 0x00ff0000) + (p2 & 0x00ff0000)) >> 17; \
const Uint32 g = ((p1 & 0x0000ff00) + (p2 & 0x0000ff00)) >> 9; \
const Uint32 b = ((p1 & 0x000000ff) + (p2 & 0x000000ff)) >> 1; \
#define READ_1x2_PIXELS \
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 p2 = ((const Uint32 *)curr_row)[2 * i + 1]; \
const Uint32 r = ((p1 & 0x00ff0000) + (p2 & 0x00ff0000)) >> 17; \
const Uint32 g = ((p1 & 0x0000ff00) + (p2 & 0x0000ff00)) >> 9; \
const Uint32 b = ((p1 & 0x000000ff) + (p2 & 0x000000ff)) >> 1; \
#define READ_1x1_PIXEL \
const Uint32 p = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 r = (p & 0x00ff0000) >> 16; \
const Uint32 g = (p & 0x0000ff00) >> 8; \
const Uint32 b = (p & 0x000000ff); \
#define READ_TWO_RGB_PIXELS \
const Uint32 p = ((const Uint32 *)curr_row)[2 * i]; \
const Uint32 r = (p & 0x00ff0000) >> 16; \
const Uint32 g = (p & 0x0000ff00) >> 8; \
const Uint32 b = (p & 0x000000ff); \
const Uint32 p1 = ((const Uint32 *)curr_row)[2 * i + 1]; \
const Uint32 r1 = (p1 & 0x00ff0000) >> 16; \
const Uint32 g1 = (p1 & 0x0000ff00) >> 8; \
const Uint32 b1 = (p1 & 0x000000ff); \
const Uint32 R = (r + r1)/2; \
const Uint32 G = (g + g1)/2; \
const Uint32 B = (b + b1)/2; \
#define READ_ONE_RGB_PIXEL READ_1x1_PIXEL
switch (dst_format)
{
case SDL_PIXELFORMAT_YV12:
case SDL_PIXELFORMAT_IYUV:
case SDL_PIXELFORMAT_NV12:
case SDL_PIXELFORMAT_NV21:
{
const Uint8 *curr_row, *next_row;
Uint8 *plane_y;
Uint8 *plane_u;
Uint8 *plane_v;
Uint8 *plane_interleaved_uv;
Uint32 y_stride, uv_stride, y_skip, uv_skip;
GetYUVPlanes(width, height, dst_format, dst, dst_pitch,
(const Uint8 **)&plane_y, (const Uint8 **)&plane_u, (const Uint8 **)&plane_v,
&y_stride, &uv_stride);
plane_interleaved_uv = (plane_y + height * y_stride);
y_skip = (y_stride - width);
curr_row = (const Uint8*)src;
/* Write Y plane */
for (j = 0; j < height; j++) {
for (i = 0; i < width; i++) {
const Uint32 p1 = ((const Uint32 *)curr_row)[i];
const Uint32 r = (p1 & 0x00ff0000) >> 16;
const Uint32 g = (p1 & 0x0000ff00) >> 8;
const Uint32 b = (p1 & 0x000000ff);
*plane_y++ = MAKE_Y(r, g, b);
}
plane_y += y_skip;
curr_row += src_pitch;
}
curr_row = (const Uint8*)src;
next_row = (const Uint8*)src;
next_row += src_pitch;
if (dst_format == SDL_PIXELFORMAT_YV12 || dst_format == SDL_PIXELFORMAT_IYUV)
{
/* Write UV planes, not interleaved */
uv_skip = (uv_stride - (width + 1)/2);
for (j = 0; j < height_half; j++) {
for (i = 0; i < width_half; i++) {
READ_2x2_PIXELS;
*plane_u++ = MAKE_U(r, g, b);
*plane_v++ = MAKE_V(r, g, b);
}
if (width_remainder) {
READ_2x1_PIXELS;
*plane_u++ = MAKE_U(r, g, b);
*plane_v++ = MAKE_V(r, g, b);
}
plane_u += uv_skip;
plane_v += uv_skip;
curr_row += src_pitch_x_2;
next_row += src_pitch_x_2;
}
if (height_remainder) {
for (i = 0; i < width_half; i++) {
READ_1x2_PIXELS;
*plane_u++ = MAKE_U(r, g, b);
*plane_v++ = MAKE_V(r, g, b);
}
if (width_remainder) {
READ_1x1_PIXEL;
*plane_u++ = MAKE_U(r, g, b);
*plane_v++ = MAKE_V(r, g, b);
}
plane_u += uv_skip;
plane_v += uv_skip;
}
}
else if (dst_format == SDL_PIXELFORMAT_NV12)
{
uv_skip = (uv_stride - ((width + 1)/2)*2);
for (j = 0; j < height_half; j++) {
for (i = 0; i < width_half; i++) {
READ_2x2_PIXELS;
*plane_interleaved_uv++ = MAKE_U(r, g, b);
*plane_interleaved_uv++ = MAKE_V(r, g, b);
}
if (width_remainder) {
READ_2x1_PIXELS;
*plane_interleaved_uv++ = MAKE_U(r, g, b);
*plane_interleaved_uv++ = MAKE_V(r, g, b);
}
plane_interleaved_uv += uv_skip;
curr_row += src_pitch_x_2;
next_row += src_pitch_x_2;
}
if (height_remainder) {
for (i = 0; i < width_half; i++) {
READ_1x2_PIXELS;
*plane_interleaved_uv++ = MAKE_U(r, g, b);
*plane_interleaved_uv++ = MAKE_V(r, g, b);
}
if (width_remainder) {
READ_1x1_PIXEL;
*plane_interleaved_uv++ = MAKE_U(r, g, b);
*plane_interleaved_uv++ = MAKE_V(r, g, b);
}
}
}
else /* dst_format == SDL_PIXELFORMAT_NV21 */
{
uv_skip = (uv_stride - ((width + 1)/2)*2);
for (j = 0; j < height_half; j++) {
for (i = 0; i < width_half; i++) {
READ_2x2_PIXELS;
*plane_interleaved_uv++ = MAKE_V(r, g, b);
*plane_interleaved_uv++ = MAKE_U(r, g, b);
}
if (width_remainder) {
READ_2x1_PIXELS;
*plane_interleaved_uv++ = MAKE_V(r, g, b);
*plane_interleaved_uv++ = MAKE_U(r, g, b);
}
plane_interleaved_uv += uv_skip;
curr_row += src_pitch_x_2;
next_row += src_pitch_x_2;
}
if (height_remainder) {
for (i = 0; i < width_half; i++) {
READ_1x2_PIXELS;
*plane_interleaved_uv++ = MAKE_V(r, g, b);
*plane_interleaved_uv++ = MAKE_U(r, g, b);
}
if (width_remainder) {
READ_1x1_PIXEL;
*plane_interleaved_uv++ = MAKE_V(r, g, b);
*plane_interleaved_uv++ = MAKE_U(r, g, b);
}
}
}
}
break;
case SDL_PIXELFORMAT_YUY2:
case SDL_PIXELFORMAT_UYVY:
case SDL_PIXELFORMAT_YVYU:
{
const Uint8 *curr_row = (const Uint8*) src;
Uint8 *plane = (Uint8*) dst;
const int row_size = (4 * ((width + 1) / 2));
int plane_skip;
if (dst_pitch < row_size) {
return SDL_SetError("Destination pitch is too small, expected at least %d\n", row_size);
}
plane_skip = (dst_pitch - row_size);
/* Write YUV plane, packed */
if (dst_format == SDL_PIXELFORMAT_YUY2)
{
for (j = 0; j < height; j++) {
for (i = 0; i < width_half; i++) {
READ_TWO_RGB_PIXELS;
/* Y U Y1 V */
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_U(R, G, B);
*plane++ = MAKE_Y(r1, g1, b1);
*plane++ = MAKE_V(R, G, B);
}
if (width_remainder) {
READ_ONE_RGB_PIXEL;
/* Y U Y V */
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_U(r, g, b);
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_V(r, g, b);
}
plane += plane_skip;
curr_row += src_pitch;
}
}
else if (dst_format == SDL_PIXELFORMAT_UYVY)
{
for (j = 0; j < height; j++) {
for (i = 0; i < width_half; i++) {
READ_TWO_RGB_PIXELS;
/* U Y V Y1 */
*plane++ = MAKE_U(R, G, B);
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_V(R, G, B);
*plane++ = MAKE_Y(r1, g1, b1);
}
if (width_remainder) {
READ_ONE_RGB_PIXEL;
/* U Y V Y */
*plane++ = MAKE_U(r, g, b);
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_V(r, g, b);
*plane++ = MAKE_Y(r, g, b);
}
plane += plane_skip;
curr_row += src_pitch;
}
}
else if (dst_format == SDL_PIXELFORMAT_YVYU)
{
for (j = 0; j < height; j++) {
for (i = 0; i < width_half; i++) {
READ_TWO_RGB_PIXELS;
/* Y V Y1 U */
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_V(R, G, B);
*plane++ = MAKE_Y(r1, g1, b1);
*plane++ = MAKE_U(R, G, B);
}
if (width_remainder) {
READ_ONE_RGB_PIXEL;
/* Y V Y U */
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_V(r, g, b);
*plane++ = MAKE_Y(r, g, b);
*plane++ = MAKE_U(r, g, b);
}
plane += plane_skip;
curr_row += src_pitch;
}
}
}
break;
default:
return SDL_SetError("Unsupported YUV destination format: %s", SDL_GetPixelFormatName(dst_format));
}
#undef MAKE_Y
#undef MAKE_U
#undef MAKE_V
#undef READ_2x2_PIXELS
#undef READ_2x1_PIXELS
#undef READ_1x2_PIXELS
#undef READ_1x1_PIXEL
#undef READ_TWO_RGB_PIXELS
#undef READ_ONE_RGB_PIXEL
return 0;
}
static int SDL_ConvertPixels_Packed4_to_Packed4 ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1493 of file SDL_yuv.c.

References 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(), SDL_ConvertPixels_YVYU_to_YUY2(), SDL_GetPixelFormatName, SDL_PIXELFORMAT_UYVY, SDL_PIXELFORMAT_YUY2, SDL_PIXELFORMAT_YVYU, and SDL_SetError.

Referenced by SDL_ConvertPixels_YUV_to_YUV().

{
switch (src_format) {
case SDL_PIXELFORMAT_YUY2:
switch (dst_format) {
case SDL_PIXELFORMAT_UYVY:
return SDL_ConvertPixels_YUY2_to_UYVY(width, height, src, src_pitch, dst, dst_pitch);
case SDL_PIXELFORMAT_YVYU:
return SDL_ConvertPixels_YUY2_to_YVYU(width, height, src, src_pitch, dst, dst_pitch);
default:
break;
}
break;
case SDL_PIXELFORMAT_UYVY:
switch (dst_format) {
case SDL_PIXELFORMAT_YUY2:
return SDL_ConvertPixels_UYVY_to_YUY2(width, height, src, src_pitch, dst, dst_pitch);
case SDL_PIXELFORMAT_YVYU:
return SDL_ConvertPixels_UYVY_to_YVYU(width, height, src, src_pitch, dst, dst_pitch);
default:
break;
}
break;
case SDL_PIXELFORMAT_YVYU:
switch (dst_format) {
case SDL_PIXELFORMAT_YUY2:
return SDL_ConvertPixels_YVYU_to_YUY2(width, height, src, src_pitch, dst, dst_pitch);
case SDL_PIXELFORMAT_UYVY:
return SDL_ConvertPixels_YVYU_to_UYVY(width, height, src, src_pitch, dst, dst_pitch);
default:
break;
}
break;
default:
break;
}
return SDL_SetError("SDL_ConvertPixels_Packed4_to_Packed4: Unsupported YUV conversion: %s -> %s", SDL_GetPixelFormatName(src_format), SDL_GetPixelFormatName(dst_format));
}
static int SDL_ConvertPixels_Packed4_to_Planar2x2 ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1678 of file SDL_yuv.c.

References GetYUVPlanes(), SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, and SDL_SetError.

Referenced by SDL_ConvertPixels_YUV_to_YUV().

{
int x, y;
const Uint8 *srcY1, *srcY2, *srcU1, *srcU2, *srcV1, *srcV2;
Uint32 srcY_pitch, srcUV_pitch;
Uint32 src_pitch_left;
Uint8 *dstY1, *dstY2, *dstU, *dstV;
Uint32 dstY_pitch, dstUV_pitch;
Uint32 dstY_pitch_left, dstUV_pitch_left, dstUV_pixel_stride;
if (src == dst) {
return SDL_SetError("Can't change YUV plane types in-place");
}
if (GetYUVPlanes(width, height, src_format, src, src_pitch,
&srcY1, &srcU1, &srcV1, &srcY_pitch, &srcUV_pitch) < 0) {
return -1;
}
srcY2 = srcY1 + srcY_pitch;
srcU2 = srcU1 + srcUV_pitch;
srcV2 = srcV1 + srcUV_pitch;
src_pitch_left = (srcY_pitch - 4*((width + 1)/2));
if (GetYUVPlanes(width, height, dst_format, dst, dst_pitch,
(const Uint8 **)&dstY1, (const Uint8 **)&dstU, (const Uint8 **)&dstV,
&dstY_pitch, &dstUV_pitch) < 0) {
return -1;
}
dstY2 = dstY1 + dstY_pitch;
dstY_pitch_left = (dstY_pitch - width);
if (dst_format == SDL_PIXELFORMAT_NV12 || dst_format == SDL_PIXELFORMAT_NV21) {
dstUV_pixel_stride = 2;
dstUV_pitch_left = (dstUV_pitch - 2*((width + 1)/2));
} else {
dstUV_pixel_stride = 1;
dstUV_pitch_left = (dstUV_pitch - ((width + 1)/2));
}
/* Copy 2x2 blocks of pixels at a time */
for (y = 0; y < (height - 1); y += 2) {
for (x = 0; x < (width - 1); x += 2) {
/* Row 1 */
*dstY1++ = *srcY1;
srcY1 += 2;
*dstY1++ = *srcY1;
srcY1 += 2;
/* Row 2 */
*dstY2++ = *srcY2;
srcY2 += 2;
*dstY2++ = *srcY2;
srcY2 += 2;
*dstU = (Uint8)(((Uint32)*srcU1 + *srcU2)/2);
*dstV = (Uint8)(((Uint32)*srcV1 + *srcV2)/2);
srcU1 += 4;
srcU2 += 4;
srcV1 += 4;
srcV2 += 4;
dstU += dstUV_pixel_stride;
dstV += dstUV_pixel_stride;
}
/* Last column */
if (x == (width - 1)) {
/* Row 1 */
*dstY1 = *srcY1;
srcY1 += 2;
*dstY1++ = *srcY1;
srcY1 += 2;
/* Row 2 */
*dstY2 = *srcY2;
srcY2 += 2;
*dstY2++ = *srcY2;
srcY2 += 2;
*dstU = (Uint8)(((Uint32)*srcU1 + *srcU2)/2);
*dstV = (Uint8)(((Uint32)*srcV1 + *srcV2)/2);
srcU1 += 4;
srcU2 += 4;
srcV1 += 4;
srcV2 += 4;
dstU += dstUV_pixel_stride;
dstV += dstUV_pixel_stride;
}
srcY1 += src_pitch_left + srcY_pitch;
srcY2 += src_pitch_left + srcY_pitch;
srcU1 += src_pitch_left + srcUV_pitch;
srcU2 += src_pitch_left + srcUV_pitch;
srcV1 += src_pitch_left + srcUV_pitch;
srcV2 += src_pitch_left + srcUV_pitch;
dstY1 += dstY_pitch_left + dstY_pitch;
dstY2 += dstY_pitch_left + dstY_pitch;
dstU += dstUV_pitch_left;
dstV += dstUV_pitch_left;
}
/* Last row */
if (y == (height - 1)) {
for (x = 0; x < (width - 1); x += 2) {
*dstY1++ = *srcY1;
srcY1 += 2;
*dstY1++ = *srcY1;
srcY1 += 2;
*dstU = *srcU1;
*dstV = *srcV1;
srcU1 += 4;
srcV1 += 4;
dstU += dstUV_pixel_stride;
dstV += dstUV_pixel_stride;
}
/* Last column */
if (x == (width - 1)) {
*dstY1 = *srcY1;
*dstU = *srcU1;
*dstV = *srcV1;
}
}
return 0;
}
static int SDL_ConvertPixels_PackUVPlanes_to_NV ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch,
SDL_bool  reverseUV 
)
static

Definition at line 952 of file SDL_yuv.c.

References NULL, SDL_free, SDL_HasSSE2, SDL_malloc, SDL_memcpy, SDL_OutOfMemory, and RGB2YUVFactors::u.

Referenced by SDL_ConvertPixels_Planar2x2_to_Planar2x2().

{
int x, y;
const int UVwidth = (width + 1)/2;
const int UVheight = (height + 1)/2;
const int srcUVPitch = ((src_pitch + 1)/2);
const int srcUVPitchLeft = srcUVPitch - UVwidth;
const int dstUVPitch = ((dst_pitch + 1)/2)*2;
const int dstUVPitchLeft = dstUVPitch - UVwidth*2;
const Uint8 *src1, *src2;
Uint8 *dstUV;
Uint8 *tmp = NULL;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
/* Skip the Y plane */
src = (const Uint8 *)src + height * src_pitch;
dst = (Uint8 *)dst + height * dst_pitch;
if (src == dst) {
/* Need to make a copy of the buffer so we don't clobber it while converting */
tmp = (Uint8 *)SDL_malloc(2*UVheight*srcUVPitch);
if (!tmp) {
return SDL_OutOfMemory();
}
SDL_memcpy(tmp, src, 2*UVheight*srcUVPitch);
src = tmp;
}
if (reverseUV) {
src2 = (const Uint8 *)src;
src1 = src2 + UVheight * srcUVPitch;
} else {
src1 = (const Uint8 *)src;
src2 = src1 + UVheight * srcUVPitch;
}
dstUV = (Uint8 *)dst;
y = UVheight;
while (y--) {
x = UVwidth;
#ifdef __SSE2__
if (use_SSE2) {
while (x >= 16) {
__m128i u = _mm_loadu_si128((__m128i *)src1);
__m128i v = _mm_loadu_si128((__m128i *)src2);
__m128i uv1 = _mm_unpacklo_epi8(u, v);
__m128i uv2 = _mm_unpackhi_epi8(u, v);
_mm_storeu_si128((__m128i*)dstUV, uv1);
_mm_storeu_si128((__m128i*)(dstUV + 16), uv2);
src1 += 16;
src2 += 16;
dstUV += 32;
x -= 16;
}
}
#endif
while (x--) {
*dstUV++ = *src1++;
*dstUV++ = *src2++;
}
src1 += srcUVPitchLeft;
src2 += srcUVPitchLeft;
dstUV += dstUVPitchLeft;
}
if (tmp) {
SDL_free(tmp);
}
return 0;
}
static int SDL_ConvertPixels_Planar2x2_to_Packed4 ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1535 of file SDL_yuv.c.

References GetYUVPlanes(), SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, and SDL_SetError.

Referenced by SDL_ConvertPixels_YUV_to_YUV().

{
int x, y;
const Uint8 *srcY1, *srcY2, *srcU, *srcV;
Uint32 srcY_pitch, srcUV_pitch;
Uint32 srcY_pitch_left, srcUV_pitch_left, srcUV_pixel_stride;
Uint8 *dstY1, *dstY2, *dstU1, *dstU2, *dstV1, *dstV2;
Uint32 dstY_pitch, dstUV_pitch;
Uint32 dst_pitch_left;
if (src == dst) {
return SDL_SetError("Can't change YUV plane types in-place");
}
if (GetYUVPlanes(width, height, src_format, src, src_pitch,
&srcY1, &srcU, &srcV, &srcY_pitch, &srcUV_pitch) < 0) {
return -1;
}
srcY2 = srcY1 + srcY_pitch;
srcY_pitch_left = (srcY_pitch - width);
if (src_format == SDL_PIXELFORMAT_NV12 || src_format == SDL_PIXELFORMAT_NV21) {
srcUV_pixel_stride = 2;
srcUV_pitch_left = (srcUV_pitch - 2*((width + 1)/2));
} else {
srcUV_pixel_stride = 1;
srcUV_pitch_left = (srcUV_pitch - ((width + 1)/2));
}
if (GetYUVPlanes(width, height, dst_format, dst, dst_pitch,
(const Uint8 **)&dstY1, (const Uint8 **)&dstU1, (const Uint8 **)&dstV1,
&dstY_pitch, &dstUV_pitch) < 0) {
return -1;
}
dstY2 = dstY1 + dstY_pitch;
dstU2 = dstU1 + dstUV_pitch;
dstV2 = dstV1 + dstUV_pitch;
dst_pitch_left = (dstY_pitch - 4*((width + 1)/2));
/* Copy 2x2 blocks of pixels at a time */
for (y = 0; y < (height - 1); y += 2) {
for (x = 0; x < (width - 1); x += 2) {
/* Row 1 */
*dstY1 = *srcY1++;
dstY1 += 2;
*dstY1 = *srcY1++;
dstY1 += 2;
*dstU1 = *srcU;
*dstV1 = *srcV;
/* Row 2 */
*dstY2 = *srcY2++;
dstY2 += 2;
*dstY2 = *srcY2++;
dstY2 += 2;
*dstU2 = *srcU;
*dstV2 = *srcV;
srcU += srcUV_pixel_stride;
srcV += srcUV_pixel_stride;
dstU1 += 4;
dstU2 += 4;
dstV1 += 4;
dstV2 += 4;
}
/* Last column */
if (x == (width - 1)) {
/* Row 1 */
*dstY1 = *srcY1;
dstY1 += 2;
*dstY1 = *srcY1++;
dstY1 += 2;
*dstU1 = *srcU;
*dstV1 = *srcV;
/* Row 2 */
*dstY2 = *srcY2;
dstY2 += 2;
*dstY2 = *srcY2++;
dstY2 += 2;
*dstU2 = *srcU;
*dstV2 = *srcV;
srcU += srcUV_pixel_stride;
srcV += srcUV_pixel_stride;
dstU1 += 4;
dstU2 += 4;
dstV1 += 4;
dstV2 += 4;
}
srcY1 += srcY_pitch_left + srcY_pitch;
srcY2 += srcY_pitch_left + srcY_pitch;
srcU += srcUV_pitch_left;
srcV += srcUV_pitch_left;
dstY1 += dst_pitch_left + dstY_pitch;
dstY2 += dst_pitch_left + dstY_pitch;
dstU1 += dst_pitch_left + dstUV_pitch;
dstU2 += dst_pitch_left + dstUV_pitch;
dstV1 += dst_pitch_left + dstUV_pitch;
dstV2 += dst_pitch_left + dstUV_pitch;
}
/* Last row */
if (y == (height - 1)) {
for (x = 0; x < (width - 1); x += 2) {
/* Row 1 */
*dstY1 = *srcY1++;
dstY1 += 2;
*dstY1 = *srcY1++;
dstY1 += 2;
*dstU1 = *srcU;
*dstV1 = *srcV;
srcU += srcUV_pixel_stride;
srcV += srcUV_pixel_stride;
dstU1 += 4;
dstV1 += 4;
}
/* Last column */
if (x == (width - 1)) {
/* Row 1 */
*dstY1 = *srcY1;
dstY1 += 2;
*dstY1 = *srcY1++;
dstY1 += 2;
*dstU1 = *srcU;
*dstV1 = *srcV;
srcU += srcUV_pixel_stride;
srcV += srcUV_pixel_stride;
dstU1 += 4;
dstV1 += 4;
}
}
return 0;
}
static int SDL_ConvertPixels_Planar2x2_to_Planar2x2 ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1153 of file SDL_yuv.c.

References i, SDL_ConvertPixels_PackUVPlanes_to_NV(), SDL_ConvertPixels_SplitNV_to_UVPlanes(), SDL_ConvertPixels_SwapNV(), SDL_ConvertPixels_SwapUVPlanes(), SDL_FALSE, SDL_GetPixelFormatName, SDL_memcpy, SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, SDL_PIXELFORMAT_YV12, SDL_SetError, and SDL_TRUE.

Referenced by SDL_ConvertPixels_YUV_to_YUV().

{
if (src != dst) {
/* Copy Y plane */
int i;
const Uint8 *srcY = (const Uint8 *)src;
Uint8 *dstY = (Uint8 *)dst;
for (i = height; i--; ) {
SDL_memcpy(dstY, srcY, width);
srcY += src_pitch;
dstY += dst_pitch;
}
}
switch (src_format) {
case SDL_PIXELFORMAT_YV12:
switch (dst_format) {
case SDL_PIXELFORMAT_IYUV:
return SDL_ConvertPixels_SwapUVPlanes(width, height, src, src_pitch, dst, dst_pitch);
case SDL_PIXELFORMAT_NV12:
return SDL_ConvertPixels_PackUVPlanes_to_NV(width, height, src, src_pitch, dst, dst_pitch, SDL_TRUE);
case SDL_PIXELFORMAT_NV21:
return SDL_ConvertPixels_PackUVPlanes_to_NV(width, height, src, src_pitch, dst, dst_pitch, SDL_FALSE);
default:
break;
}
break;
case SDL_PIXELFORMAT_IYUV:
switch (dst_format) {
case SDL_PIXELFORMAT_YV12:
return SDL_ConvertPixels_SwapUVPlanes(width, height, src, src_pitch, dst, dst_pitch);
case SDL_PIXELFORMAT_NV12:
return SDL_ConvertPixels_PackUVPlanes_to_NV(width, height, src, src_pitch, dst, dst_pitch, SDL_FALSE);
case SDL_PIXELFORMAT_NV21:
return SDL_ConvertPixels_PackUVPlanes_to_NV(width, height, src, src_pitch, dst, dst_pitch, SDL_TRUE);
default:
break;
}
break;
case SDL_PIXELFORMAT_NV12:
switch (dst_format) {
case SDL_PIXELFORMAT_YV12:
return SDL_ConvertPixels_SplitNV_to_UVPlanes(width, height, src, src_pitch, dst, dst_pitch, SDL_TRUE);
case SDL_PIXELFORMAT_IYUV:
return SDL_ConvertPixels_SplitNV_to_UVPlanes(width, height, src, src_pitch, dst, dst_pitch, SDL_FALSE);
case SDL_PIXELFORMAT_NV21:
return SDL_ConvertPixels_SwapNV(width, height, src, src_pitch, dst, dst_pitch);
default:
break;
}
break;
case SDL_PIXELFORMAT_NV21:
switch (dst_format) {
case SDL_PIXELFORMAT_YV12:
return SDL_ConvertPixels_SplitNV_to_UVPlanes(width, height, src, src_pitch, dst, dst_pitch, SDL_FALSE);
case SDL_PIXELFORMAT_IYUV:
return SDL_ConvertPixels_SplitNV_to_UVPlanes(width, height, src, src_pitch, dst, dst_pitch, SDL_TRUE);
case SDL_PIXELFORMAT_NV12:
return SDL_ConvertPixels_SwapNV(width, height, src, src_pitch, dst, dst_pitch);
default:
break;
}
break;
default:
break;
}
return SDL_SetError("SDL_ConvertPixels_Planar2x2_to_Planar2x2: Unsupported YUV conversion: %s -> %s", SDL_GetPixelFormatName(src_format), SDL_GetPixelFormatName(dst_format));
}
int SDL_ConvertPixels_RGB_to_YUV ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)

Definition at line 784 of file SDL_yuv.c.

References GetYUVConversionType(), GetYUVPlanes(), NULL, rgb24_yuv420_std(), SDL_ConvertPixels, SDL_ConvertPixels_ARGB8888_to_YUV(), SDL_free, SDL_malloc, SDL_OutOfMemory, SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB24, and RGB2YUVFactors::u.

Referenced by SDL_ConvertPixels().

{
#if 0 /* Doesn't handle odd widths */
/* RGB24 to FOURCC */
if (src_format == SDL_PIXELFORMAT_RGB24) {
Uint8 *y;
Uint8 *u;
Uint8 *v;
Uint32 y_stride;
Uint32 uv_stride;
YCbCrType yuv_type;
if (GetYUVPlanes(width, height, dst_format, dst, dst_pitch, (const Uint8 **)&y, (const Uint8 **)&u, (const Uint8 **)&v, &y_stride, &uv_stride) < 0) {
return -1;
}
if (GetYUVConversionType(width, height, &yuv_type) < 0) {
return -1;
}
rgb24_yuv420_std(width, height, src, src_pitch, y, u, v, y_stride, uv_stride, yuv_type);
return 0;
}
#endif
/* ARGB8888 to FOURCC */
if (src_format == SDL_PIXELFORMAT_ARGB8888) {
return SDL_ConvertPixels_ARGB8888_to_YUV(width, height, src, src_pitch, dst_format, dst, dst_pitch);
}
/* not ARGB8888 to FOURCC : need an intermediate conversion */
{
int ret;
void *tmp;
int tmp_pitch = (width * sizeof(Uint32));
tmp = SDL_malloc(tmp_pitch * height);
if (tmp == NULL) {
return SDL_OutOfMemory();
}
/* convert src/src_format to tmp/ARGB8888 */
ret = SDL_ConvertPixels(width, height, src_format, src, src_pitch, SDL_PIXELFORMAT_ARGB8888, tmp, tmp_pitch);
if (ret == -1) {
SDL_free(tmp);
return ret;
}
/* convert tmp/ARGB8888 to dst/FOURCC */
ret = SDL_ConvertPixels_ARGB8888_to_YUV(width, height, tmp, tmp_pitch, dst_format, dst, dst_pitch);
SDL_free(tmp);
return ret;
}
}
static int SDL_ConvertPixels_SplitNV_to_UVPlanes ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch,
SDL_bool  reverseUV 
)
static

Definition at line 1026 of file SDL_yuv.c.

References NULL, SDL_free, SDL_HasSSE2, SDL_malloc, SDL_memcpy, SDL_OutOfMemory, and RGB2YUVFactors::u.

Referenced by SDL_ConvertPixels_Planar2x2_to_Planar2x2().

{
int x, y;
const int UVwidth = (width + 1)/2;
const int UVheight = (height + 1)/2;
const int srcUVPitch = ((src_pitch + 1)/2)*2;
const int srcUVPitchLeft = srcUVPitch - UVwidth*2;
const int dstUVPitch = ((dst_pitch + 1)/2);
const int dstUVPitchLeft = dstUVPitch - UVwidth;
const Uint8 *srcUV;
Uint8 *dst1, *dst2;
Uint8 *tmp = NULL;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
/* Skip the Y plane */
src = (const Uint8 *)src + height * src_pitch;
dst = (Uint8 *)dst + height * dst_pitch;
if (src == dst) {
/* Need to make a copy of the buffer so we don't clobber it while converting */
tmp = (Uint8 *)SDL_malloc(UVheight*srcUVPitch);
if (!tmp) {
return SDL_OutOfMemory();
}
SDL_memcpy(tmp, src, UVheight*srcUVPitch);
src = tmp;
}
if (reverseUV) {
dst2 = (Uint8 *)dst;
dst1 = dst2 + UVheight * dstUVPitch;
} else {
dst1 = (Uint8 *)dst;
dst2 = dst1 + UVheight * dstUVPitch;
}
srcUV = (const Uint8 *)src;
y = UVheight;
while (y--) {
x = UVwidth;
#ifdef __SSE2__
if (use_SSE2) {
__m128i mask = _mm_set1_epi16(0x00FF);
while (x >= 16) {
__m128i uv1 = _mm_loadu_si128((__m128i*)srcUV);
__m128i uv2 = _mm_loadu_si128((__m128i*)(srcUV+16));
__m128i u1 = _mm_and_si128(uv1, mask);
__m128i u2 = _mm_and_si128(uv2, mask);
__m128i u = _mm_packus_epi16(u1, u2);
__m128i v1 = _mm_srli_epi16(uv1, 8);
__m128i v2 = _mm_srli_epi16(uv2, 8);
__m128i v = _mm_packus_epi16(v1, v2);
_mm_storeu_si128((__m128i*)dst1, u);
_mm_storeu_si128((__m128i*)dst2, v);
srcUV += 32;
dst1 += 16;
dst2 += 16;
x -= 16;
}
}
#endif
while (x--) {
*dst1++ = *srcUV++;
*dst2++ = *srcUV++;
}
srcUV += srcUVPitchLeft;
dst1 += dstUVPitchLeft;
dst2 += dstUVPitchLeft;
}
if (tmp) {
SDL_free(tmp);
}
return 0;
}
static int SDL_ConvertPixels_SwapNV ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1105 of file SDL_yuv.c.

References SDL_HasSSE2, SDL_Swap16(), and RGB2YUVFactors::u.

Referenced by SDL_ConvertPixels_Planar2x2_to_Planar2x2().

{
int x, y;
const int UVwidth = (width + 1)/2;
const int UVheight = (height + 1)/2;
const int srcUVPitch = ((src_pitch + 1)/2)*2;
const int srcUVPitchLeft = (srcUVPitch - UVwidth*2)/sizeof(Uint16);
const int dstUVPitch = ((dst_pitch + 1)/2)*2;
const int dstUVPitchLeft = (dstUVPitch - UVwidth*2)/sizeof(Uint16);
const Uint16 *srcUV;
Uint16 *dstUV;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
/* Skip the Y plane */
src = (const Uint8 *)src + height * src_pitch;
dst = (Uint8 *)dst + height * dst_pitch;
srcUV = (const Uint16 *)src;
dstUV = (Uint16 *)dst;
y = UVheight;
while (y--) {
x = UVwidth;
#ifdef __SSE2__
if (use_SSE2) {
while (x >= 8) {
__m128i uv = _mm_loadu_si128((__m128i*)srcUV);
__m128i v = _mm_slli_epi16(uv, 8);
__m128i u = _mm_srli_epi16(uv, 8);
__m128i vu = _mm_or_si128(v, u);
_mm_storeu_si128((__m128i*)dstUV, vu);
srcUV += 8;
dstUV += 8;
x -= 8;
}
}
#endif
while (x--) {
*dstUV++ = SDL_Swap16(*srcUV++);
}
srcUV += srcUVPitchLeft;
dstUV += dstUVPitchLeft;
}
return 0;
}
static int SDL_ConvertPixels_SwapUVPlanes ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 896 of file SDL_yuv.c.

References SDL_free, SDL_malloc, SDL_memcpy, and SDL_OutOfMemory.

Referenced by SDL_ConvertPixels_Planar2x2_to_Planar2x2().

{
int y;
const int UVwidth = (width + 1)/2;
const int UVheight = (height + 1)/2;
/* Skip the Y plane */
src = (const Uint8 *)src + height * src_pitch;
dst = (Uint8 *)dst + height * dst_pitch;
if (src == dst) {
int UVpitch = (dst_pitch + 1)/2;
Uint8 *tmp;
Uint8 *row1 = dst;
Uint8 *row2 = (Uint8 *)dst + UVheight * UVpitch;
/* Allocate a temporary row for the swap */
tmp = (Uint8 *)SDL_malloc(UVwidth);
if (!tmp) {
return SDL_OutOfMemory();
}
for (y = 0; y < UVheight; ++y) {
SDL_memcpy(tmp, row1, UVwidth);
SDL_memcpy(row1, row2, UVwidth);
SDL_memcpy(row2, tmp, UVwidth);
row1 += UVpitch;
row2 += UVpitch;
}
SDL_free(tmp);
} else {
const Uint8 *srcUV;
Uint8 *dstUV;
int srcUVPitch = ((src_pitch + 1)/2);
int dstUVPitch = ((dst_pitch + 1)/2);
/* Copy the first plane */
srcUV = (const Uint8 *)src;
dstUV = (Uint8 *)dst + UVheight * dstUVPitch;
for (y = 0; y < UVheight; ++y) {
SDL_memcpy(dstUV, srcUV, UVwidth);
srcUV += srcUVPitch;
dstUV += dstUVPitch;
}
/* Copy the second plane */
dstUV = (Uint8 *)dst;
for (y = 0; y < UVheight; ++y) {
SDL_memcpy(dstUV, srcUV, UVwidth);
srcUV += srcUVPitch;
dstUV += dstUVPitch;
}
}
return 0;
}
static int SDL_ConvertPixels_UYVY_to_YUY2 ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1325 of file SDL_yuv.c.

References PACKED4_TO_PACKED4_ROW_SSE2, SDL_HasSSE2, and V.

Referenced by SDL_ConvertPixels_Packed4_to_Packed4().

{
int x, y;
const int YUVwidth = (width + 1)/2;
const int srcYUVPitchLeft = (src_pitch - YUVwidth*4);
const int dstYUVPitchLeft = (dst_pitch - YUVwidth*4);
const Uint8 *srcYUV = (const Uint8 *)src;
Uint8 *dstYUV = (Uint8 *)dst;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
y = height;
while (y--) {
x = YUVwidth;
#ifdef __SSE2__
if (use_SSE2) {
PACKED4_TO_PACKED4_ROW_SSE2(_MM_SHUFFLE(2, 3, 0, 1));
}
#endif
while (x--) {
Uint8 Y1, U, Y2, V;
U = srcYUV[0];
Y1 = srcYUV[1];
V = srcYUV[2];
Y2 = srcYUV[3];
srcYUV += 4;
dstYUV[0] = Y1;
dstYUV[1] = U;
dstYUV[2] = Y2;
dstYUV[3] = V;
dstYUV += 4;
}
srcYUV += srcYUVPitchLeft;
dstYUV += dstYUVPitchLeft;
}
return 0;
}
static int SDL_ConvertPixels_UYVY_to_YVYU ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1367 of file SDL_yuv.c.

References PACKED4_TO_PACKED4_ROW_SSE2, SDL_HasSSE2, and V.

Referenced by SDL_ConvertPixels_Packed4_to_Packed4().

{
int x, y;
const int YUVwidth = (width + 1)/2;
const int srcYUVPitchLeft = (src_pitch - YUVwidth*4);
const int dstYUVPitchLeft = (dst_pitch - YUVwidth*4);
const Uint8 *srcYUV = (const Uint8 *)src;
Uint8 *dstYUV = (Uint8 *)dst;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
y = height;
while (y--) {
x = YUVwidth;
#ifdef __SSE2__
if (use_SSE2) {
PACKED4_TO_PACKED4_ROW_SSE2(_MM_SHUFFLE(0, 3, 2, 1));
}
#endif
while (x--) {
Uint8 Y1, U, Y2, V;
U = srcYUV[0];
Y1 = srcYUV[1];
V = srcYUV[2];
Y2 = srcYUV[3];
srcYUV += 4;
dstYUV[0] = Y1;
dstYUV[1] = V;
dstYUV[2] = Y2;
dstYUV[3] = U;
dstYUV += 4;
}
srcYUV += srcYUVPitchLeft;
dstYUV += dstYUVPitchLeft;
}
return 0;
}
int SDL_ConvertPixels_YUV_to_RGB ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)

Definition at line 395 of file SDL_yuv.c.

References GetYUVConversionType(), GetYUVPlanes(), NULL, SDL_ConvertPixels, SDL_ConvertPixels_YUV_to_RGB(), SDL_free, SDL_malloc, SDL_OutOfMemory, SDL_PIXELFORMAT_ARGB8888, SDL_SetError, YCBCR_601, yuv_rgb_sse(), and yuv_rgb_std().

Referenced by SDL_ConvertPixels(), and SDL_ConvertPixels_YUV_to_RGB().

{
const Uint8 *y = NULL;
const Uint8 *u = NULL;
const Uint8 *v = NULL;
Uint32 y_stride = 0;
Uint32 uv_stride = 0;
YCbCrType yuv_type = YCBCR_601;
if (GetYUVPlanes(width, height, src_format, src, src_pitch, &y, &u, &v, &y_stride, &uv_stride) < 0) {
return -1;
}
if (GetYUVConversionType(width, height, &yuv_type) < 0) {
return -1;
}
if (yuv_rgb_sse(src_format, dst_format, width, height, y, u, v, y_stride, uv_stride, (Uint8*)dst, dst_pitch, yuv_type)) {
return 0;
}
if (yuv_rgb_std(src_format, dst_format, width, height, y, u, v, y_stride, uv_stride, (Uint8*)dst, dst_pitch, yuv_type)) {
return 0;
}
/* No fast path for the RGB format, instead convert using an intermediate buffer */
if (dst_format != SDL_PIXELFORMAT_ARGB8888) {
int ret;
void *tmp;
int tmp_pitch = (width * sizeof(Uint32));
tmp = SDL_malloc(tmp_pitch * height);
if (tmp == NULL) {
return SDL_OutOfMemory();
}
/* convert src/src_format to tmp/ARGB8888 */
ret = SDL_ConvertPixels_YUV_to_RGB(width, height, src_format, src, src_pitch, SDL_PIXELFORMAT_ARGB8888, tmp, tmp_pitch);
if (ret < 0) {
SDL_free(tmp);
return ret;
}
/* convert tmp/ARGB8888 to dst/RGB */
ret = SDL_ConvertPixels(width, height, SDL_PIXELFORMAT_ARGB8888, tmp, tmp_pitch, dst_format, dst, dst_pitch);
SDL_free(tmp);
return ret;
}
return SDL_SetError("Unsupported YUV conversion");
}
int SDL_ConvertPixels_YUV_to_YUV ( int  width,
int  height,
Uint32  src_format,
const void *  src,
int  src_pitch,
Uint32  dst_format,
void *  dst,
int  dst_pitch 
)

Definition at line 1810 of file SDL_yuv.c.

References IsPacked4Format(), IsPlanar2x2Format(), SDL_ConvertPixels_Packed4_to_Packed4(), SDL_ConvertPixels_Packed4_to_Planar2x2(), SDL_ConvertPixels_Planar2x2_to_Packed4(), SDL_ConvertPixels_Planar2x2_to_Planar2x2(), SDL_ConvertPixels_YUV_to_YUV_Copy(), SDL_GetPixelFormatName, and SDL_SetError.

Referenced by SDL_ConvertPixels().

{
if (src_format == dst_format) {
if (src == dst) {
/* Nothing to do */
return 0;
}
return SDL_ConvertPixels_YUV_to_YUV_Copy(width, height, src_format, src, src_pitch, dst, dst_pitch);
}
if (IsPlanar2x2Format(src_format) && IsPlanar2x2Format(dst_format)) {
return SDL_ConvertPixels_Planar2x2_to_Planar2x2(width, height, src_format, src, src_pitch, dst_format, dst, dst_pitch);
} else if (IsPacked4Format(src_format) && IsPacked4Format(dst_format)) {
return SDL_ConvertPixels_Packed4_to_Packed4(width, height, src_format, src, src_pitch, dst_format, dst, dst_pitch);
} else if (IsPlanar2x2Format(src_format) && IsPacked4Format(dst_format)) {
return SDL_ConvertPixels_Planar2x2_to_Packed4(width, height, src_format, src, src_pitch, dst_format, dst, dst_pitch);
} else if (IsPacked4Format(src_format) && IsPlanar2x2Format(dst_format)) {
return SDL_ConvertPixels_Packed4_to_Planar2x2(width, height, src_format, src, src_pitch, dst_format, dst, dst_pitch);
} else {
return SDL_SetError("SDL_ConvertPixels_YUV_to_YUV: Unsupported YUV conversion: %s -> %s", SDL_GetPixelFormatName(src_format), SDL_GetPixelFormatName(dst_format));
}
}
static int SDL_ConvertPixels_YUV_to_YUV_Copy ( int  width,
int  height,
Uint32  format,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 842 of file SDL_yuv.c.

References i, IsPacked4Format(), IsPlanar2x2Format(), SDL_GetPixelFormatName, SDL_memcpy, SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, SDL_PIXELFORMAT_YV12, and SDL_SetError.

Referenced by SDL_ConvertPixels_YUV_to_YUV().

{
int i;
if (IsPlanar2x2Format(format)) {
/* Y plane */
for (i = height; i--;) {
SDL_memcpy(dst, src, width);
src = (const Uint8*)src + src_pitch;
dst = (Uint8*)dst + dst_pitch;
}
if (format == SDL_PIXELFORMAT_YV12 || format == SDL_PIXELFORMAT_IYUV) {
/* U and V planes are a quarter the size of the Y plane, rounded up */
width = (width + 1) / 2;
height = (height + 1) / 2;
src_pitch = (src_pitch + 1) / 2;
dst_pitch = (dst_pitch + 1) / 2;
for (i = height * 2; i--;) {
SDL_memcpy(dst, src, width);
src = (const Uint8*)src + src_pitch;
dst = (Uint8*)dst + dst_pitch;
}
} else if (format == SDL_PIXELFORMAT_NV12 || format == SDL_PIXELFORMAT_NV21) {
/* U/V plane is half the height of the Y plane, rounded up */
height = (height + 1) / 2;
width = ((width + 1) / 2)*2;
src_pitch = ((src_pitch + 1) / 2)*2;
dst_pitch = ((dst_pitch + 1) / 2)*2;
for (i = height; i--;) {
SDL_memcpy(dst, src, width);
src = (const Uint8*)src + src_pitch;
dst = (Uint8*)dst + dst_pitch;
}
}
return 0;
}
if (IsPacked4Format(format)) {
/* Packed planes */
width = 4 * ((width + 1) / 2);
for (i = height; i--;) {
SDL_memcpy(dst, src, width);
src = (const Uint8*)src + src_pitch;
dst = (Uint8*)dst + dst_pitch;
}
return 0;
}
return SDL_SetError("SDL_ConvertPixels_YUV_to_YUV_Copy: Unsupported YUV format: %s", SDL_GetPixelFormatName(format));
}
static int SDL_ConvertPixels_YUY2_to_UYVY ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1241 of file SDL_yuv.c.

References PACKED4_TO_PACKED4_ROW_SSE2, SDL_HasSSE2, and V.

Referenced by SDL_ConvertPixels_Packed4_to_Packed4().

{
int x, y;
const int YUVwidth = (width + 1)/2;
const int srcYUVPitchLeft = (src_pitch - YUVwidth*4);
const int dstYUVPitchLeft = (dst_pitch - YUVwidth*4);
const Uint8 *srcYUV = (const Uint8 *)src;
Uint8 *dstYUV = (Uint8 *)dst;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
y = height;
while (y--) {
x = YUVwidth;
#ifdef __SSE2__
if (use_SSE2) {
PACKED4_TO_PACKED4_ROW_SSE2(_MM_SHUFFLE(2, 3, 0, 1));
}
#endif
while (x--) {
Uint8 Y1, U, Y2, V;
Y1 = srcYUV[0];
U = srcYUV[1];
Y2 = srcYUV[2];
V = srcYUV[3];
srcYUV += 4;
dstYUV[0] = U;
dstYUV[1] = Y1;
dstYUV[2] = V;
dstYUV[3] = Y2;
dstYUV += 4;
}
srcYUV += srcYUVPitchLeft;
dstYUV += dstYUVPitchLeft;
}
return 0;
}
static int SDL_ConvertPixels_YUY2_to_YVYU ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1283 of file SDL_yuv.c.

References PACKED4_TO_PACKED4_ROW_SSE2, SDL_HasSSE2, and V.

Referenced by SDL_ConvertPixels_Packed4_to_Packed4().

{
int x, y;
const int YUVwidth = (width + 1)/2;
const int srcYUVPitchLeft = (src_pitch - YUVwidth*4);
const int dstYUVPitchLeft = (dst_pitch - YUVwidth*4);
const Uint8 *srcYUV = (const Uint8 *)src;
Uint8 *dstYUV = (Uint8 *)dst;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
y = height;
while (y--) {
x = YUVwidth;
#ifdef __SSE2__
if (use_SSE2) {
PACKED4_TO_PACKED4_ROW_SSE2(_MM_SHUFFLE(1, 2, 3, 0));
}
#endif
while (x--) {
Uint8 Y1, U, Y2, V;
Y1 = srcYUV[0];
U = srcYUV[1];
Y2 = srcYUV[2];
V = srcYUV[3];
srcYUV += 4;
dstYUV[0] = Y1;
dstYUV[1] = V;
dstYUV[2] = Y2;
dstYUV[3] = U;
dstYUV += 4;
}
srcYUV += srcYUVPitchLeft;
dstYUV += dstYUVPitchLeft;
}
return 0;
}
static int SDL_ConvertPixels_YVYU_to_UYVY ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1451 of file SDL_yuv.c.

References PACKED4_TO_PACKED4_ROW_SSE2, SDL_HasSSE2, and V.

Referenced by SDL_ConvertPixels_Packed4_to_Packed4().

{
int x, y;
const int YUVwidth = (width + 1)/2;
const int srcYUVPitchLeft = (src_pitch - YUVwidth*4);
const int dstYUVPitchLeft = (dst_pitch - YUVwidth*4);
const Uint8 *srcYUV = (const Uint8 *)src;
Uint8 *dstYUV = (Uint8 *)dst;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
y = height;
while (y--) {
x = YUVwidth;
#ifdef __SSE2__
if (use_SSE2) {
PACKED4_TO_PACKED4_ROW_SSE2(_MM_SHUFFLE(2, 1, 0, 3));
}
#endif
while (x--) {
Uint8 Y1, U, Y2, V;
Y1 = srcYUV[0];
V = srcYUV[1];
Y2 = srcYUV[2];
U = srcYUV[3];
srcYUV += 4;
dstYUV[0] = U;
dstYUV[1] = Y1;
dstYUV[2] = V;
dstYUV[3] = Y2;
dstYUV += 4;
}
srcYUV += srcYUVPitchLeft;
dstYUV += dstYUVPitchLeft;
}
return 0;
}
static int SDL_ConvertPixels_YVYU_to_YUY2 ( int  width,
int  height,
const void *  src,
int  src_pitch,
void *  dst,
int  dst_pitch 
)
static

Definition at line 1409 of file SDL_yuv.c.

References PACKED4_TO_PACKED4_ROW_SSE2, SDL_HasSSE2, and V.

Referenced by SDL_ConvertPixels_Packed4_to_Packed4().

{
int x, y;
const int YUVwidth = (width + 1)/2;
const int srcYUVPitchLeft = (src_pitch - YUVwidth*4);
const int dstYUVPitchLeft = (dst_pitch - YUVwidth*4);
const Uint8 *srcYUV = (const Uint8 *)src;
Uint8 *dstYUV = (Uint8 *)dst;
#ifdef __SSE2__
const SDL_bool use_SSE2 = SDL_HasSSE2();
#endif
y = height;
while (y--) {
x = YUVwidth;
#ifdef __SSE2__
if (use_SSE2) {
PACKED4_TO_PACKED4_ROW_SSE2(_MM_SHUFFLE(1, 2, 3, 0));
}
#endif
while (x--) {
Uint8 Y1, U, Y2, V;
Y1 = srcYUV[0];
V = srcYUV[1];
Y2 = srcYUV[2];
U = srcYUV[3];
srcYUV += 4;
dstYUV[0] = Y1;
dstYUV[1] = U;
dstYUV[2] = Y2;
dstYUV[3] = V;
dstYUV += 4;
}
srcYUV += srcYUVPitchLeft;
dstYUV += dstYUVPitchLeft;
}
return 0;
}
SDL_YUV_CONVERSION_MODE SDL_GetYUVConversionMode ( void  )

Get the YUV conversion mode.

Definition at line 41 of file SDL_yuv.c.

References SDL_YUV_ConversionMode.

{
return SDL_YUV_ConversionMode;
}
SDL_YUV_CONVERSION_MODE SDL_GetYUVConversionModeForResolution ( int  width,
int  height 
)

Get the YUV conversion mode, returning the correct mode for the resolution when the current conversion mode is SDL_YUV_CONVERSION_AUTOMATIC.

Definition at line 46 of file SDL_yuv.c.

References SDL_GetYUVConversionMode, SDL_YUV_CONVERSION_AUTOMATIC, SDL_YUV_CONVERSION_BT601, SDL_YUV_CONVERSION_BT709, and SDL_YUV_SD_THRESHOLD.

{
SDL_YUV_CONVERSION_MODE mode = SDL_GetYUVConversionMode();
if (mode == SDL_YUV_CONVERSION_AUTOMATIC) {
if (height <= SDL_YUV_SD_THRESHOLD) {
mode = SDL_YUV_CONVERSION_BT601;
} else {
mode = SDL_YUV_CONVERSION_BT709;
}
}
return mode;
}
void SDL_SetYUVConversionMode ( SDL_YUV_CONVERSION_MODE  mode)

Set the YUV conversion mode.

Definition at line 36 of file SDL_yuv.c.

References SDL_YUV_ConversionMode.

{
SDL_YUV_ConversionMode = mode;
}
static SDL_bool yuv_rgb_sse ( Uint32  src_format,
Uint32  dst_format,
Uint32  width,
Uint32  height,
const Uint8 *  y,
const Uint8 *  u,
const Uint8 *  v,
Uint32  y_stride,
Uint32  uv_stride,
Uint8 *  rgb,
Uint32  rgb_stride,
YCbCrType  yuv_type 
)
static

Definition at line 182 of file SDL_yuv.c.

References SDL_FALSE, SDL_HasSSE2, SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGRX8888, SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, SDL_PIXELFORMAT_RGB24, SDL_PIXELFORMAT_RGB565, SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGBX8888, SDL_PIXELFORMAT_UYVY, SDL_PIXELFORMAT_YUY2, SDL_PIXELFORMAT_YV12, SDL_PIXELFORMAT_YVYU, SDL_TRUE, yuv420_abgr_sseu(), yuv420_argb_sseu(), yuv420_bgra_sseu(), yuv420_rgb24_sseu(), yuv420_rgb565_sseu(), yuv420_rgba_sseu(), yuv422_abgr_sseu(), yuv422_argb_sseu(), yuv422_bgra_sseu(), yuv422_rgb24_sseu(), yuv422_rgb565_sseu(), yuv422_rgba_sseu(), yuvnv12_abgr_sseu(), yuvnv12_argb_sseu(), yuvnv12_bgra_sseu(), yuvnv12_rgb24_sseu(), yuvnv12_rgb565_sseu(), and yuvnv12_rgba_sseu().

Referenced by SDL_ConvertPixels_YUV_to_RGB().

{
#ifdef __SSE2__
if (!SDL_HasSSE2()) {
return SDL_FALSE;
}
if (src_format == SDL_PIXELFORMAT_YV12 ||
src_format == SDL_PIXELFORMAT_IYUV) {
switch (dst_format) {
case SDL_PIXELFORMAT_RGB565:
yuv420_rgb565_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB24:
yuv420_rgb24_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGBX8888:
case SDL_PIXELFORMAT_RGBA8888:
yuv420_rgba_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGRX8888:
case SDL_PIXELFORMAT_BGRA8888:
yuv420_bgra_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_ARGB8888:
yuv420_argb_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_ABGR8888:
yuv420_abgr_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
default:
break;
}
}
if (src_format == SDL_PIXELFORMAT_YUY2 ||
src_format == SDL_PIXELFORMAT_UYVY ||
src_format == SDL_PIXELFORMAT_YVYU) {
switch (dst_format) {
case SDL_PIXELFORMAT_RGB565:
yuv422_rgb565_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB24:
yuv422_rgb24_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGBX8888:
case SDL_PIXELFORMAT_RGBA8888:
yuv422_rgba_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGRX8888:
case SDL_PIXELFORMAT_BGRA8888:
yuv422_bgra_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_ARGB8888:
yuv422_argb_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_ABGR8888:
yuv422_abgr_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
default:
break;
}
}
if (src_format == SDL_PIXELFORMAT_NV12 ||
src_format == SDL_PIXELFORMAT_NV21) {
switch (dst_format) {
case SDL_PIXELFORMAT_RGB565:
yuvnv12_rgb565_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB24:
yuvnv12_rgb24_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGBX8888:
case SDL_PIXELFORMAT_RGBA8888:
yuvnv12_rgba_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGRX8888:
case SDL_PIXELFORMAT_BGRA8888:
yuvnv12_bgra_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_ARGB8888:
yuvnv12_argb_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_ABGR8888:
yuvnv12_abgr_sseu(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
default:
break;
}
}
#endif
return SDL_FALSE;
}
static SDL_bool yuv_rgb_std ( Uint32  src_format,
Uint32  dst_format,
Uint32  width,
Uint32  height,
const Uint8 *  y,
const Uint8 *  u,
const Uint8 *  v,
Uint32  y_stride,
Uint32  uv_stride,
Uint8 *  rgb,
Uint32  rgb_stride,
YCbCrType  yuv_type 
)
static

Definition at line 291 of file SDL_yuv.c.

References SDL_FALSE, SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGRX8888, SDL_PIXELFORMAT_IYUV, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_NV21, SDL_PIXELFORMAT_RGB24, SDL_PIXELFORMAT_RGB565, SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGBX8888, SDL_PIXELFORMAT_UYVY, SDL_PIXELFORMAT_YUY2, SDL_PIXELFORMAT_YV12, SDL_PIXELFORMAT_YVYU, SDL_TRUE, yuv420_abgr_std(), yuv420_argb_std(), yuv420_bgra_std(), yuv420_rgb24_std(), yuv420_rgb565_std(), yuv420_rgba_std(), yuv422_abgr_std(), yuv422_argb_std(), yuv422_bgra_std(), yuv422_rgb24_std(), yuv422_rgb565_std(), yuv422_rgba_std(), yuvnv12_abgr_std(), yuvnv12_argb_std(), yuvnv12_bgra_std(), yuvnv12_rgb24_std(), yuvnv12_rgb565_std(), and yuvnv12_rgba_std().

Referenced by SDL_ConvertPixels_YUV_to_RGB().

{
if (src_format == SDL_PIXELFORMAT_YV12 ||
src_format == SDL_PIXELFORMAT_IYUV) {
switch (dst_format) {
case SDL_PIXELFORMAT_RGB565:
yuv420_rgb565_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB24:
yuv420_rgb24_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGBX8888:
case SDL_PIXELFORMAT_RGBA8888:
yuv420_rgba_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGRX8888:
case SDL_PIXELFORMAT_BGRA8888:
yuv420_bgra_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_ARGB8888:
yuv420_argb_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_ABGR8888:
yuv420_abgr_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
default:
break;
}
}
if (src_format == SDL_PIXELFORMAT_YUY2 ||
src_format == SDL_PIXELFORMAT_UYVY ||
src_format == SDL_PIXELFORMAT_YVYU) {
switch (dst_format) {
case SDL_PIXELFORMAT_RGB565:
yuv422_rgb565_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB24:
yuv422_rgb24_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGBX8888:
case SDL_PIXELFORMAT_RGBA8888:
yuv422_rgba_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGRX8888:
case SDL_PIXELFORMAT_BGRA8888:
yuv422_bgra_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_ARGB8888:
yuv422_argb_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_ABGR8888:
yuv422_abgr_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
default:
break;
}
}
if (src_format == SDL_PIXELFORMAT_NV12 ||
src_format == SDL_PIXELFORMAT_NV21) {
switch (dst_format) {
case SDL_PIXELFORMAT_RGB565:
yuvnv12_rgb565_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB24:
yuvnv12_rgb24_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGBX8888:
case SDL_PIXELFORMAT_RGBA8888:
yuvnv12_rgba_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGRX8888:
case SDL_PIXELFORMAT_BGRA8888:
yuvnv12_bgra_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_ARGB8888:
yuvnv12_argb_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_ABGR8888:
yuvnv12_abgr_std(width, height, y, u, v, y_stride, uv_stride, rgb, rgb_stride, yuv_type);
return SDL_TRUE;
default:
break;
}
}
return SDL_FALSE;
}

Variable Documentation

SDL_YUV_CONVERSION_MODE SDL_YUV_ConversionMode = SDL_YUV_CONVERSION_BT601
static

Definition at line 33 of file SDL_yuv.c.

Referenced by SDL_GetYUVConversionMode(), and SDL_SetYUVConversionMode().