FFmpeg
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Data Structures | Macros | Typedefs | Functions | Variables
swscale_internal.h File Reference
#include "config.h"
#include "libavutil/avassert.h"
#include "libavutil/avutil.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/pixfmt.h"
#include "libavutil/pixdesc.h"

Go to the source code of this file.

Data Structures

struct  SwsContext
 

Macros

#define STR(s)   AV_TOSTRING(s)
 
#define YUVRGB_TABLE_HEADROOM   128
 
#define FAST_BGR2YV12
 
#define MAX_FILTER_SIZE   256
 
#define DITHER1XBPP
 
#define ALT32_CORR   1
 
#define APCK_PTR2   4
 
#define APCK_COEF   8
 
#define APCK_SIZE   16
 
#define RED_DITHER   "0*8"
 
#define GREEN_DITHER   "1*8"
 
#define BLUE_DITHER   "2*8"
 
#define Y_COEFF   "3*8"
 
#define VR_COEFF   "4*8"
 
#define UB_COEFF   "5*8"
 
#define VG_COEFF   "6*8"
 
#define UG_COEFF   "7*8"
 
#define Y_OFFSET   "8*8"
 
#define U_OFFSET   "9*8"
 
#define V_OFFSET   "10*8"
 
#define LUM_MMX_FILTER_OFFSET   "11*8"
 
#define CHR_MMX_FILTER_OFFSET   "11*8+4*4*256"
 
#define DSTW_OFFSET   "11*8+4*4*256*2"
 
#define ESP_OFFSET   "11*8+4*4*256*2+8"
 
#define VROUNDER_OFFSET   "11*8+4*4*256*2+16"
 
#define U_TEMP   "11*8+4*4*256*2+24"
 
#define V_TEMP   "11*8+4*4*256*2+32"
 
#define Y_TEMP   "11*8+4*4*256*2+40"
 
#define ALP_MMX_FILTER_OFFSET   "11*8+4*4*256*2+48"
 
#define UV_OFF_PX   "11*8+4*4*256*3+48"
 
#define UV_OFF_BYTE   "11*8+4*4*256*3+56"
 
#define DITHER16   "11*8+4*4*256*3+64"
 
#define DITHER32   "11*8+4*4*256*3+80"
 
#define isNBPS(x)   is9_OR_10BPS(x)
 
#define isGray(x)
 
#define isRGBinInt(x)
 
#define isBGRinInt(x)
 
#define isRGBinBytes(x)
 
#define isBGRinBytes(x)
 
#define isAnyRGB(x)
 
#define isPacked(x)
 
#define FILL(wfunc)
 

Typedefs

typedef int(* SwsFunc )(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
 
typedef void(* yuv2planar1_fn )(const int16_t *src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
 Write one line of horizontally scaled data to planar output without any additional vertical scaling (or point-scaling).
 
typedef void(* yuv2planarX_fn )(const int16_t *filter, int filterSize, const int16_t **src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
 Write one line of horizontally scaled data to planar output with multi-point vertical scaling between input pixels.
 
typedef void(* yuv2interleavedX_fn )(struct SwsContext *c, const int16_t *chrFilter, int chrFilterSize, const int16_t **chrUSrc, const int16_t **chrVSrc, uint8_t *dest, int dstW)
 Write one line of horizontally scaled chroma to interleaved output with multi-point vertical scaling between input pixels.
 
typedef void(* yuv2packed1_fn )(struct SwsContext *c, const int16_t *lumSrc, const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc, uint8_t *dest, int dstW, int uvalpha, int y)
 Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output without any additional vertical scaling (or point-scaling).
 
typedef void(* yuv2packed2_fn )(struct SwsContext *c, const int16_t *lumSrc[2], const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc[2], uint8_t *dest, int dstW, int yalpha, int uvalpha, int y)
 Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing bilinear scaling between two input lines.
 
typedef void(* yuv2packedX_fn )(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
 Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing multi-point vertical scaling between input pixels.
 
typedef void(* yuv2anyX_fn )(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t **dest, int dstW, int y)
 Write one line of horizontally scaled Y/U/V/A to YUV/RGB output by doing multi-point vertical scaling between input pixels.
 

Functions

SwsFunc ff_yuv2rgb_get_func_ptr (SwsContext *c)
 
int ff_yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
 
void ff_yuv2rgb_init_tables_altivec (SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
 
void updateMMXDitherTables (SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, int lastInLumBuf, int lastInChrBuf)
 
SwsFunc ff_yuv2rgb_init_mmx (SwsContext *c)
 
SwsFunc ff_yuv2rgb_init_vis (SwsContext *c)
 
SwsFunc ff_yuv2rgb_init_altivec (SwsContext *c)
 
SwsFunc ff_yuv2rgb_get_func_ptr_bfin (SwsContext *c)
 
void ff_bfin_get_unscaled_swscale (SwsContext *c)
 
static av_always_inline int is16BPS (enum AVPixelFormat pix_fmt)
 
static av_always_inline int is9_OR_10BPS (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isBE (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isYUV (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isPlanarYUV (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isRGB (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isALPHA (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isPlanar (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isPackedRGB (enum AVPixelFormat pix_fmt)
 
static av_always_inline int isPlanarRGB (enum AVPixelFormat pix_fmt)
 
static av_always_inline int usePal (enum AVPixelFormat pix_fmt)
 
void ff_get_unscaled_swscale (SwsContext *c)
 Set c->swScale to an unscaled converter if one exists for the specific source and destination formats, bit depths, flags, etc.
 
void ff_swscale_get_unscaled_altivec (SwsContext *c)
 
SwsFunc ff_getSwsFunc (SwsContext *c)
 Return function pointer to fastest main scaler path function depending on architecture and available optimizations.
 
void ff_sws_init_input_funcs (SwsContext *c)
 
void ff_sws_init_output_funcs (SwsContext *c, yuv2planar1_fn *yuv2plane1, yuv2planarX_fn *yuv2planeX, yuv2interleavedX_fn *yuv2nv12cX, yuv2packed1_fn *yuv2packed1, yuv2packed2_fn *yuv2packed2, yuv2packedX_fn *yuv2packedX, yuv2anyX_fn *yuv2anyX)
 
void ff_sws_init_swScale_altivec (SwsContext *c)
 
void ff_sws_init_swScale_mmx (SwsContext *c)
 
static void fillPlane16 (uint8_t *plane, int stride, int width, int height, int y, int alpha, int bits, const int big_endian)
 

Variables

const uint64_t ff_dither4 [2]
 
const uint64_t ff_dither8 [2]
 
const uint8_t dithers [8][8][8]
 
const uint16_t dither_scale [15][16]
 
const AVClass sws_context_class
 

Macro Definition Documentation

#define STR (   s)    AV_TOSTRING(s)

Definition at line 38 of file swscale_internal.h.

Referenced by av_register_all().

#define YUVRGB_TABLE_HEADROOM   128

Definition at line 40 of file swscale_internal.h.

Referenced by fill_gv_table(), fill_table(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

#define FAST_BGR2YV12

Definition at line 42 of file swscale_internal.h.

#define MAX_FILTER_SIZE   256

Definition at line 44 of file swscale_internal.h.

Referenced by initFilter().

#define DITHER1XBPP

Definition at line 46 of file swscale_internal.h.

Referenced by sws_init_context().

#define ALT32_CORR   1

Definition at line 51 of file swscale_internal.h.

Referenced by findRgbConvFn(), and rgbToRgbWrapper().

#define APCK_PTR2   4

Definition at line 59 of file swscale_internal.h.

#define APCK_COEF   8

Definition at line 60 of file swscale_internal.h.

#define APCK_SIZE   16

Definition at line 61 of file swscale_internal.h.

Referenced by initFilter().

#define RED_DITHER   "0*8"

Definition at line 381 of file swscale_internal.h.

Referenced by yuv2rgb555_1_TMPL(), yuv2rgb555_2_TMPL(), yuv2rgb555_X_ar_TMPL(), yuv2rgb555_X_TMPL(), yuv2rgb565_1_TMPL(), yuv2rgb565_2_TMPL(), yuv2rgb565_X_ar_TMPL(), and yuv2rgb565_X_TMPL().

#define GREEN_DITHER   "1*8"

Definition at line 382 of file swscale_internal.h.

Referenced by yuv2rgb555_1_TMPL(), yuv2rgb555_2_TMPL(), yuv2rgb555_X_ar_TMPL(), yuv2rgb555_X_TMPL(), yuv2rgb565_1_TMPL(), yuv2rgb565_2_TMPL(), yuv2rgb565_X_ar_TMPL(), and yuv2rgb565_X_TMPL().

#define BLUE_DITHER   "2*8"

Definition at line 383 of file swscale_internal.h.

Referenced by yuv2rgb555_1_TMPL(), yuv2rgb555_2_TMPL(), yuv2rgb555_X_ar_TMPL(), yuv2rgb555_X_TMPL(), yuv2rgb565_1_TMPL(), yuv2rgb565_2_TMPL(), yuv2rgb565_X_ar_TMPL(), and yuv2rgb565_X_TMPL().

#define Y_COEFF   "3*8"

Definition at line 384 of file swscale_internal.h.

#define VR_COEFF   "4*8"

Definition at line 385 of file swscale_internal.h.

#define UB_COEFF   "5*8"

Definition at line 386 of file swscale_internal.h.

#define VG_COEFF   "6*8"

Definition at line 387 of file swscale_internal.h.

#define UG_COEFF   "7*8"

Definition at line 388 of file swscale_internal.h.

#define Y_OFFSET   "8*8"

Definition at line 389 of file swscale_internal.h.

#define U_OFFSET   "9*8"

Definition at line 390 of file swscale_internal.h.

#define V_OFFSET   "10*8"

Definition at line 391 of file swscale_internal.h.

#define LUM_MMX_FILTER_OFFSET   "11*8"

Definition at line 392 of file swscale_internal.h.

#define CHR_MMX_FILTER_OFFSET   "11*8+4*4*256"

Definition at line 393 of file swscale_internal.h.

#define DSTW_OFFSET   "11*8+4*4*256*2"

Definition at line 394 of file swscale_internal.h.

#define ESP_OFFSET   "11*8+4*4*256*2+8"

Definition at line 395 of file swscale_internal.h.

Referenced by yuv2bgr24_1_TMPL(), yuv2bgr24_2_TMPL(), yuv2rgb32_1_TMPL(), yuv2rgb32_2_TMPL(), yuv2rgb555_1_TMPL(), yuv2rgb555_2_TMPL(), yuv2rgb565_1_TMPL(), yuv2rgb565_2_TMPL(), yuv2yuyv422_1_TMPL(), and yuv2yuyv422_2_TMPL().

#define VROUNDER_OFFSET   "11*8+4*4*256*2+16"

Definition at line 396 of file swscale_internal.h.

#define U_TEMP   "11*8+4*4*256*2+24"

Definition at line 397 of file swscale_internal.h.

Referenced by yuv2rgb32_2_TMPL(), and yuv2rgb32_X_ar_TMPL().

#define V_TEMP   "11*8+4*4*256*2+32"

Definition at line 398 of file swscale_internal.h.

Referenced by yuv2rgb32_2_TMPL(), and yuv2rgb32_X_ar_TMPL().

#define Y_TEMP   "11*8+4*4*256*2+40"

Definition at line 399 of file swscale_internal.h.

Referenced by yuv2rgb32_X_ar_TMPL().

#define ALP_MMX_FILTER_OFFSET   "11*8+4*4*256*2+48"

Definition at line 400 of file swscale_internal.h.

Referenced by yuv2rgb32_X_ar_TMPL(), and yuv2rgb32_X_TMPL().

#define UV_OFF_PX   "11*8+4*4*256*3+48"

Definition at line 401 of file swscale_internal.h.

#define UV_OFF_BYTE   "11*8+4*4*256*3+56"

Definition at line 402 of file swscale_internal.h.

#define DITHER16   "11*8+4*4*256*3+64"

Definition at line 403 of file swscale_internal.h.

#define DITHER32   "11*8+4*4*256*3+80"

Definition at line 404 of file swscale_internal.h.

#define isNBPS (   x)    is9_OR_10BPS(x)

Definition at line 611 of file swscale_internal.h.

Referenced by ff_sws_init_input_funcs(), planarCopyWrapper(), sws_init_context(), and swScale().

#define isGray (   x)
Value:
((x) == AV_PIX_FMT_GRAY8 || \
(x) == AV_PIX_FMT_Y400A || \
(x) == AV_PIX_FMT_GRAY16BE || \
(x) == AV_PIX_FMT_GRAY16LE)

Definition at line 646 of file swscale_internal.h.

#define isRGBinInt (   x)
Value:
( \
(x) == AV_PIX_FMT_RGB48BE || \
(x) == AV_PIX_FMT_RGB48LE || \
(x) == AV_PIX_FMT_RGBA64BE || \
(x) == AV_PIX_FMT_RGBA64LE || \
(x) == AV_PIX_FMT_RGB32 || \
(x) == AV_PIX_FMT_RGB32_1 || \
(x) == AV_PIX_FMT_RGB24 || \
(x) == AV_PIX_FMT_RGB565BE || \
(x) == AV_PIX_FMT_RGB565LE || \
(x) == AV_PIX_FMT_RGB555BE || \
(x) == AV_PIX_FMT_RGB555LE || \
(x) == AV_PIX_FMT_RGB444BE || \
(x) == AV_PIX_FMT_RGB444LE || \
(x) == AV_PIX_FMT_RGB8 || \
(x) == AV_PIX_FMT_RGB4 || \
(x) == AV_PIX_FMT_RGB4_BYTE || \
(x) == AV_PIX_FMT_MONOBLACK || \
(x) == AV_PIX_FMT_MONOWHITE \
)

Definition at line 653 of file swscale_internal.h.

Referenced by findRgbConvFn().

#define isBGRinInt (   x)
Value:
( \
(x) == AV_PIX_FMT_BGR48BE || \
(x) == AV_PIX_FMT_BGR48LE || \
(x) == AV_PIX_FMT_BGRA64BE || \
(x) == AV_PIX_FMT_BGRA64LE || \
(x) == AV_PIX_FMT_BGR32 || \
(x) == AV_PIX_FMT_BGR32_1 || \
(x) == AV_PIX_FMT_BGR24 || \
(x) == AV_PIX_FMT_BGR565BE || \
(x) == AV_PIX_FMT_BGR565LE || \
(x) == AV_PIX_FMT_BGR555BE || \
(x) == AV_PIX_FMT_BGR555LE || \
(x) == AV_PIX_FMT_BGR444BE || \
(x) == AV_PIX_FMT_BGR444LE || \
(x) == AV_PIX_FMT_BGR8 || \
(x) == AV_PIX_FMT_BGR4 || \
(x) == AV_PIX_FMT_BGR4_BYTE || \
(x) == AV_PIX_FMT_MONOBLACK || \
(x) == AV_PIX_FMT_MONOWHITE \
)

Definition at line 674 of file swscale_internal.h.

Referenced by findRgbConvFn().

#define isRGBinBytes (   x)
Value:
( \
(x) == AV_PIX_FMT_RGB48BE \
|| (x) == AV_PIX_FMT_RGB48LE \
|| (x) == AV_PIX_FMT_RGBA64BE \
|| (x) == AV_PIX_FMT_RGBA64LE \
|| (x) == AV_PIX_FMT_RGBA \
|| (x) == AV_PIX_FMT_ARGB \
|| (x) == AV_PIX_FMT_RGB24 \
)

Definition at line 696 of file swscale_internal.h.

#define isBGRinBytes (   x)
Value:
( \
(x) == AV_PIX_FMT_BGR48BE \
|| (x) == AV_PIX_FMT_BGR48LE \
|| (x) == AV_PIX_FMT_BGRA64BE \
|| (x) == AV_PIX_FMT_BGRA64LE \
|| (x) == AV_PIX_FMT_BGRA \
|| (x) == AV_PIX_FMT_ABGR \
|| (x) == AV_PIX_FMT_BGR24 \
)

Definition at line 705 of file swscale_internal.h.

#define isAnyRGB (   x)
Value:
( \
isRGBinInt(x) || \
isBGRinInt(x) || \
isRGB(x) || \
(x)==AV_PIX_FMT_GBRP9LE || \
(x)==AV_PIX_FMT_GBRP9BE || \
(x)==AV_PIX_FMT_GBRP10LE || \
(x)==AV_PIX_FMT_GBRP10BE || \
(x)==AV_PIX_FMT_GBRP12LE || \
(x)==AV_PIX_FMT_GBRP12BE || \
(x)==AV_PIX_FMT_GBRP14LE || \
(x)==AV_PIX_FMT_GBRP14BE || \
(x)==AV_PIX_FMT_GBR24P \
)

Definition at line 715 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), hScale16To15_c(), hScale16To19_c(), sws_init_context(), and sws_init_swScale_c().

#define isPacked (   x)
Value:
( \
(x)==AV_PIX_FMT_PAL8 \
|| (x)==AV_PIX_FMT_YUYV422 \
|| (x)==AV_PIX_FMT_UYVY422 \
|| (x)==AV_PIX_FMT_Y400A \
|| isRGBinInt(x) \
|| isBGRinInt(x) \
)

Definition at line 739 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), and swScale().

#define FILL (   wfunc)
Value:
for (j = 0; j < width; j++) {\
wfunc(ptr+2*j, v);\
}

Referenced by fillPlane16().

Typedef Documentation

typedef int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])

Definition at line 66 of file swscale_internal.h.

typedef void(* yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)

Write one line of horizontally scaled data to planar output without any additional vertical scaling (or point-scaling).

Parameters
srcscaled source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
destpointer to the output plane. For >8bit output, this is in uint16_t
dstWwidth of destination in pixels
ditherordered dither array of type int16_t and size 8
offsetDither offset

Definition at line 82 of file swscale_internal.h.

typedef void(* yuv2planarX_fn)(const int16_t *filter, int filterSize, const int16_t **src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)

Write one line of horizontally scaled data to planar output with multi-point vertical scaling between input pixels.

Parameters
filtervertical luma/alpha scaling coefficients, 12bit [0,4096]
srcscaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
filterSizenumber of vertical input lines to scale
destpointer to output plane. For >8bit output, this is in uint16_t
dstWwidth of destination pixels
offsetDither offset

Definition at line 98 of file swscale_internal.h.

typedef void(* yuv2interleavedX_fn)(struct SwsContext *c, const int16_t *chrFilter, int chrFilterSize, const int16_t **chrUSrc, const int16_t **chrVSrc, uint8_t *dest, int dstW)

Write one line of horizontally scaled chroma to interleaved output with multi-point vertical scaling between input pixels.

Parameters
cSWS scaling context
chrFiltervertical chroma scaling coefficients, 12bit [0,4096]
chrUSrcscaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrVSrcscaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrFilterSizenumber of vertical chroma input lines to scale
destpointer to the output plane. For >8bit output, this is in uint16_t
dstWwidth of chroma planes

Definition at line 117 of file swscale_internal.h.

typedef void(* yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc, const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc, uint8_t *dest, int dstW, int uvalpha, int y)

Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output without any additional vertical scaling (or point-scaling).

Note that this function may do chroma scaling, see the "uvalpha" argument.

Parameters
cSWS scaling context
lumSrcscaled luma (Y) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrUSrcscaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrVSrcscaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
alpSrcscaled alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
destpointer to the output plane. For 16bit output, this is uint16_t
dstWwidth of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
uvalphachroma scaling coefficient for the second line of chroma pixels, either 2048 or 0. If 0, one chroma input is used for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag is set, it generates 1 output pixel). If 2048, two chroma input pixels should be averaged for 2 output pixels (this only happens if SWS_FLAG_FULL_CHR_INT is not set)
yvertical line number for this output. This does not need to be used to calculate the offset in the destination, but can be used to generate comfort noise using dithering for some output formats.

Definition at line 153 of file swscale_internal.h.

typedef void(* yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2], const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc[2], uint8_t *dest, int dstW, int yalpha, int uvalpha, int y)

Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing bilinear scaling between two input lines.

Parameters
cSWS scaling context
lumSrcscaled luma (Y) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrUSrcscaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrVSrcscaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
alpSrcscaled alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
destpointer to the output plane. For 16bit output, this is uint16_t
dstWwidth of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
yalphaluma/alpha scaling coefficients for the second input line. The first line's coefficients can be calculated by using 4096 - yalpha
uvalphachroma scaling coefficient for the second input line. The first line's coefficients can be calculated by using 4096 - uvalpha
yvertical line number for this output. This does not need to be used to calculate the offset in the destination, but can be used to generate comfort noise using dithering for some output formats.

Definition at line 186 of file swscale_internal.h.

typedef void(* yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing multi-point vertical scaling between input pixels.

Parameters
cSWS scaling context
lumFiltervertical luma/alpha scaling coefficients, 12bit [0,4096]
lumSrcscaled luma (Y) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
lumFilterSizenumber of vertical luma/alpha input lines to scale
chrFiltervertical chroma scaling coefficients, 12bit [0,4096]
chrUSrcscaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrVSrcscaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrFilterSizenumber of vertical chroma input lines to scale
alpSrcscaled alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
destpointer to the output plane. For 16bit output, this is uint16_t
dstWwidth of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
yvertical line number for this output. This does not need to be used to calculate the offset in the destination, but can be used to generate comfort noise using dithering or some output formats.

Definition at line 218 of file swscale_internal.h.

typedef void(* yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t **dest, int dstW, int y)

Write one line of horizontally scaled Y/U/V/A to YUV/RGB output by doing multi-point vertical scaling between input pixels.

Parameters
cSWS scaling context
lumFiltervertical luma/alpha scaling coefficients, 12bit [0,4096]
lumSrcscaled luma (Y) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
lumFilterSizenumber of vertical luma/alpha input lines to scale
chrFiltervertical chroma scaling coefficients, 12bit [0,4096]
chrUSrcscaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrVSrcscaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
chrFilterSizenumber of vertical chroma input lines to scale
alpSrcscaled alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
destpointer to the output planes. For 16bit output, this is uint16_t
dstWwidth of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
yvertical line number for this output. This does not need to be used to calculate the offset in the destination, but can be used to generate comfort noise using dithering or some output formats.

Definition at line 252 of file swscale_internal.h.

Function Documentation

SwsFunc ff_yuv2rgb_get_func_ptr ( SwsContext *  c)

Definition at line 607 of file yuv2rgb.c.

Referenced by ff_get_unscaled_swscale().

int ff_yuv2rgb_c_init_tables ( SwsContext *  c,
const int  inv_table[4],
int  fullRange,
int  brightness,
int  contrast,
int  saturation 
)

Definition at line 706 of file yuv2rgb.c.

Referenced by sws_setColorspaceDetails().

void ff_yuv2rgb_init_tables_altivec ( SwsContext *  c,
const int  inv_table[4],
int  brightness,
int  contrast,
int  saturation 
)

Definition at line 595 of file yuv2rgb_altivec.c.

Referenced by sws_setColorspaceDetails().

void updateMMXDitherTables ( SwsContext *  c,
int  dstY,
int  lumBufIndex,
int  chrBufIndex,
int  lastInLumBuf,
int  lastInChrBuf 
)

Referenced by swScale().

SwsFunc ff_yuv2rgb_init_mmx ( SwsContext *  c)

Definition at line 72 of file yuv2rgb.c.

Referenced by ff_yuv2rgb_get_func_ptr().

SwsFunc ff_yuv2rgb_init_vis ( SwsContext *  c)

Definition at line 188 of file yuv2rgb_vis.c.

Referenced by ff_yuv2rgb_get_func_ptr().

SwsFunc ff_yuv2rgb_init_altivec ( SwsContext *  c)

Definition at line 535 of file yuv2rgb_altivec.c.

Referenced by ff_yuv2rgb_get_func_ptr().

SwsFunc ff_yuv2rgb_get_func_ptr_bfin ( SwsContext *  c)

Definition at line 171 of file yuv2rgb_bfin.c.

Referenced by ff_yuv2rgb_get_func_ptr().

void ff_bfin_get_unscaled_swscale ( SwsContext *  c)

Definition at line 74 of file swscale_bfin.c.

Referenced by ff_get_unscaled_swscale().

static av_always_inline int is16BPS ( enum AVPixelFormat  pix_fmt)
static

Definition at line 597 of file swscale_internal.h.

Referenced by ff_sws_init_input_funcs(), ff_sws_init_output_funcs(), ff_sws_init_swScale_altivec(), planarCopyWrapper(), sws_init_context(), sws_init_swScale_TMPL(), and swScale().

static av_always_inline int is9_OR_10BPS ( enum AVPixelFormat  pix_fmt)
static

Definition at line 604 of file swscale_internal.h.

Referenced by ff_sws_init_output_funcs(), ff_sws_init_swScale_altivec(), sws_init_swScale_TMPL(), and swScale().

static av_always_inline int isBE ( enum AVPixelFormat  pix_fmt)
static

Definition at line 613 of file swscale_internal.h.

Referenced by ff_sws_init_input_funcs(), ff_sws_init_output_funcs(), ff_sws_init_swScale_mmx(), planarCopyWrapper(), swScale(), and yuv2gbrp_full_X_c().

static av_always_inline int isYUV ( enum AVPixelFormat  pix_fmt)
static

Definition at line 620 of file swscale_internal.h.

Referenced by isPlanarYUV(), sws_getColorspaceDetails(), and sws_setColorspaceDetails().

static av_always_inline int isPlanarYUV ( enum AVPixelFormat  pix_fmt)
static

Definition at line 627 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), and swScale().

static av_always_inline int isRGB ( enum AVPixelFormat  pix_fmt)
static

Definition at line 634 of file swscale_internal.h.

static av_always_inline int isALPHA ( enum AVPixelFormat  pix_fmt)
static

Definition at line 731 of file swscale_internal.h.

static av_always_inline int isPlanar ( enum AVPixelFormat  pix_fmt)
static

Definition at line 757 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_yuv2rgb_c_init_tables(), reset_ptr(), and swScale().

static av_always_inline int isPackedRGB ( enum AVPixelFormat  pix_fmt)
static

Definition at line 764 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale().

static av_always_inline int isPlanarRGB ( enum AVPixelFormat  pix_fmt)
static

Definition at line 771 of file swscale_internal.h.

Referenced by sws_init_context().

static av_always_inline int usePal ( enum AVPixelFormat  pix_fmt)
static

Definition at line 779 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), palToRgbWrapper(), reset_ptr(), and sws_scale().

void ff_get_unscaled_swscale ( SwsContext *  c)

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

Definition at line 996 of file swscale_unscaled.c.

Referenced by sws_init_context().

void ff_swscale_get_unscaled_altivec ( SwsContext *  c)

Definition at line 182 of file yuv2yuv_altivec.c.

Referenced by ff_get_unscaled_swscale().

SwsFunc ff_getSwsFunc ( SwsContext *  c)

Return function pointer to fastest main scaler path function depending on architecture and available optimizations.

Definition at line 751 of file swscale.c.

Referenced by sws_init_context().

void ff_sws_init_input_funcs ( SwsContext *  c)

Definition at line 865 of file input.c.

Referenced by sws_init_swScale_c().

void ff_sws_init_output_funcs ( SwsContext *  c,
yuv2planar1_fn *  yuv2plane1,
yuv2planarX_fn *  yuv2planeX,
yuv2interleavedX_fn *  yuv2nv12cX,
yuv2packed1_fn *  yuv2packed1,
yuv2packed2_fn *  yuv2packed2,
yuv2packedX_fn *  yuv2packedX,
yuv2anyX_fn *  yuv2anyX 
)

Definition at line 1452 of file output.c.

Referenced by sws_init_swScale_c(), and swScale().

void ff_sws_init_swScale_altivec ( SwsContext *  c)

Definition at line 288 of file swscale_altivec.c.

Referenced by ff_getSwsFunc().

void ff_sws_init_swScale_mmx ( SwsContext *  c)

Definition at line 385 of file swscale.c.

Referenced by ff_getSwsFunc().

static void fillPlane16 ( uint8_t *  plane,
int  stride,
int  width,
int  height,
int  y,
int  alpha,
int  bits,
const int  big_endian 
)
inlinestatic

Definition at line 820 of file swscale_internal.h.

Referenced by planarCopyWrapper(), and swScale().

Variable Documentation

const uint64_t ff_dither4[2]

Referenced by yuv420_rgb16_TMPL().

const uint64_t ff_dither8[2]

Referenced by yuv420_rgb15_TMPL(), and yuv420_rgb16_TMPL().

const uint8_t dithers[8][8][8]

Definition at line 37 of file swscale_unscaled.c.

const uint16_t dither_scale[15][16]

Definition at line 112 of file swscale_unscaled.c.

const AVClass sws_context_class

Definition at line 70 of file options.c.

Referenced by sws_alloc_context(), and sws_get_class().

Generated on Sat May 25 2013 04:01:36 for FFmpeg by   doxygen 1.8.2