libswscale/swscale_unscaled.c File Reference

#include <inttypes.h>
#include <string.h>
#include <math.h>
#include <stdio.h>
#include "config.h"
#include <assert.h>
#include "swscale.h"
#include "swscale_internal.h"
#include "rgb2rgb.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/cpu.h"
#include "libavutil/avutil.h"
#include "libavutil/mathematics.h"
#include "libavutil/bswap.h"
#include "libavutil/pixdesc.h"

Go to the source code of this file.

Defines

#define RGB2YUV_SHIFT   15
#define BY   ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
#define BV   (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
#define BU   ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
#define GY   ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
#define GV   (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
#define GU   (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
#define RY   ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
#define RV   ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
#define RU   (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
#define isRGBA32(x)
#define CONV_IS(src, dst)   (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
#define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)
#define COPY_UP(r, w)

Functions

static void fillPlane (uint8_t *plane, int stride, int width, int height, int y, uint8_t val)
static void copyPlane (const uint8_t *src, int srcStride, int srcSliceY, int srcSliceH, int width, uint8_t *dst, int dstStride)
static int planarToNv12Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int planarToYuy2Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int planarToUyvyWrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int yuv422pToYuy2Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int yuv422pToUyvyWrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int yuyvToYuv420Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int yuyvToYuv422Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int uyvyToYuv420Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static int uyvyToYuv422Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dstParam[], int dstStride[])
static void gray8aToPacked32 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
static void gray8aToPacked32_1 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
static void gray8aToPacked24 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
static int palToRgbWrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
static int rgbToRgbWrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
static int bgr24ToYv12Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
static int yvu9ToYv12Wrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
static int packedCopyWrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
static int planarCopyWrapper (SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
void ff_get_unscaled_swscale (SwsContext *c)
 Sets c->swScale to an unscaled converter if one exists for the specific source and destination formats, bit depths, flags, etc.
static void reset_ptr (const uint8_t *src[], int format)
static int check_image_pointers (uint8_t *data[4], enum PixelFormat pix_fmt, const int linesizes[4])
int sws_scale (SwsContext *c, const uint8_t *const src[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
 swscale wrapper, so we don't need to export the SwsContext.
void sws_convertPalette8ToPacked32 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
 Converts an 8bit paletted frame into a frame with a color depth of 32-bits.
void sws_convertPalette8ToPacked24 (const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette)
 Converts an 8bit paletted frame into a frame with a color depth of 24 bits.

Define Documentation

#define BU   ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 40 of file swscale_unscaled.c.

#define BV   (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 39 of file swscale_unscaled.c.

#define BY   ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 38 of file swscale_unscaled.c.

#define CONV_IS ( src,
dst   )     (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)

Referenced by rgbToRgbWrapper().

#define COPY_UP ( r,
w   ) 

Value:

for (j = 0; j < length; j++){ \
        unsigned int v= r(&srcPtr2[j]);\
        w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
                       (v>>(2*src_depth-dst_depth)));\
    }

Referenced by planarCopyWrapper().

#define DITHER_COPY ( dst,
dstStride,
src,
srcStride,
bswap,
dbswap   ) 

Value:

uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\
    int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\
    for (i = 0; i < height; i++) {\
        const uint8_t *dither= dithers[src_depth-9][i&7];\
        for (j = 0; j < length-7; j+=8){\
            dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\
            dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\
            dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\
            dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\
            dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\
            dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\
            dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\
            dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\
        }\
        for (; j < length; j++)\
            dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\
        dst += dstStride;\
        src += srcStride;\
    }

Definition at line 415 of file swscale_unscaled.c.

Referenced by planarCopyWrapper().

#define GU   (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 43 of file swscale_unscaled.c.

#define GV   (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 42 of file swscale_unscaled.c.

#define GY   ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 41 of file swscale_unscaled.c.

#define isRGBA32 ( x   ) 

Value:

(            \
           (x) == PIX_FMT_ARGB   \
        || (x) == PIX_FMT_RGBA   \
        || (x) == PIX_FMT_BGRA   \
        || (x) == PIX_FMT_ABGR   \
        )

Definition at line 258 of file swscale_unscaled.c.

Referenced by rgbToRgbWrapper().

#define RGB2YUV_SHIFT   15

Definition at line 37 of file swscale_unscaled.c.

#define RU   (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 46 of file swscale_unscaled.c.

#define RV   ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 45 of file swscale_unscaled.c.

#define RY   ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))

Definition at line 44 of file swscale_unscaled.c.

Function Documentation

static int bgr24ToYv12Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dst[],
int  dstStride[] 
) [static]

Definition at line 359 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int check_image_pointers ( uint8_t *  data[4],
enum PixelFormat  pix_fmt,
const int  linesizes[4] 
) [static]

Definition at line 670 of file swscale_unscaled.c.

Referenced by sws_scale().

static void copyPlane ( const uint8_t *  src,
int  srcStride,
int  srcSliceY,
int  srcSliceH,
int  width,
uint8_t *  dst,
int  dstStride 
) [static]

Definition at line 58 of file swscale_unscaled.c.

Referenced by planarToNv12Wrapper(), and yvu9ToYv12Wrapper().

void ff_get_unscaled_swscale ( SwsContext *  c  ) 

Sets c->swScale to an unscaled converter if one exists for the specific source and destination formats, bit depths, flags, etc.

Definition at line 550 of file swscale_unscaled.c.

Referenced by sws_init_context().

static void fillPlane ( uint8_t *  plane,
int  stride,
int  width,
int  height,
int  y,
uint8_t  val 
) [static]

Definition at line 48 of file swscale_unscaled.c.

static void gray8aToPacked24 ( const uint8_t *  src,
uint8_t *  dst,
int  num_pixels,
const uint8_t *  palette 
) [static]

Definition at line 200 of file swscale_unscaled.c.

Referenced by palToRgbWrapper().

static void gray8aToPacked32 ( const uint8_t *  src,
uint8_t *  dst,
int  num_pixels,
const uint8_t *  palette 
) [static]

Definition at line 185 of file swscale_unscaled.c.

Referenced by palToRgbWrapper().

static void gray8aToPacked32_1 ( const uint8_t *  src,
uint8_t *  dst,
int  num_pixels,
const uint8_t *  palette 
) [static]

Definition at line 192 of file swscale_unscaled.c.

Referenced by palToRgbWrapper().

static int packedCopyWrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dst[],
int  dstStride[] 
) [static]

Definition at line 390 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int palToRgbWrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dst[],
int  dstStride[] 
) [static]

Definition at line 213 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int planarCopyWrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dst[],
int  dstStride[] 
) [static]

Definition at line 437 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int planarToNv12Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 75 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int planarToUyvyWrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 101 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int planarToYuy2Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 91 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static void reset_ptr ( const uint8_t *  src[],
int  format 
) [static]

Definition at line 658 of file swscale_unscaled.c.

Referenced by sws_scale().

static int rgbToRgbWrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dst[],
int  dstStride[] 
) [static]

Definition at line 266 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

void sws_convertPalette8ToPacked24 ( const uint8_t *  src,
uint8_t *  dst,
int  num_pixels,
const uint8_t *  palette 
)

Converts an 8bit paletted frame into a frame with a color depth of 24 bits.

With the palette format "ABCD", the destination frame ends up with the format "ABC".

Parameters:
src source frame buffer
dst destination frame buffer
num_pixels number of pixels to convert
palette array with [256] entries, which must match color arrangement (RGB or BGR) of src

Definition at line 838 of file swscale_unscaled.c.

Referenced by palToRgbWrapper(), and put_image().

void sws_convertPalette8ToPacked32 ( const uint8_t *  src,
uint8_t *  dst,
int  num_pixels,
const uint8_t *  palette 
)

Converts an 8bit paletted frame into a frame with a color depth of 32-bits.

The output frame will have the same packed format as the palette.

Parameters:
src source frame buffer
dst destination frame buffer
num_pixels number of pixels to convert
palette array with [256] entries, which must match color arrangement (RGB or BGR) of src

Definition at line 829 of file swscale_unscaled.c.

Referenced by palToRgbWrapper(), and put_image().

int sws_scale ( SwsContext *  c,
const uint8_t *const   src[],
const int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *const   dst[],
const int  dstStride[] 
)

swscale wrapper, so we don't need to export the SwsContext.

Scales the image slice in srcSlice and puts the resulting scaled slice in the image in dst.

Assumes planar YUV to be in YUV order instead of YVU.

Definition at line 689 of file swscale_unscaled.c.

Referenced by blur(), do_video_out(), doTest(), draw_slice(), main(), queue_picture(), scale_image(), scale_slice(), and write_video_frame().

static int uyvyToYuv420Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 158 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int uyvyToYuv422Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 173 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int yuv422pToUyvyWrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 121 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int yuv422pToYuy2Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 111 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int yuyvToYuv420Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 131 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int yuyvToYuv422Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dstParam[],
int  dstStride[] 
) [static]

Definition at line 146 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

static int yvu9ToYv12Wrapper ( SwsContext *  c,
const uint8_t *  src[],
int  srcStride[],
int  srcSliceY,
int  srcSliceH,
uint8_t *  dst[],
int  dstStride[] 
) [static]

Definition at line 374 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

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