#include <stdatomic.h>
#include "config.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/frame.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/mem_internal.h"
#include "libavutil/pixfmt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/slicethread.h"
#include "libavutil/ppc/util_altivec.h"

Data Structures
struct	Range

struct	RangeList

struct	SwsContext

struct	SwsPlane
	Slice plane. More...

struct	SwsSlice
	Struct which defines a slice of an image to be scaled or an output for a scaled slice. More...

struct	SwsFilterDescriptor
	Struct which holds all necessary data for processing a slice. More...

Macros
#define	STR(s) AV_TOSTRING(s)

#define	YUVRGB_TABLE_HEADROOM 512

#define	YUVRGB_TABLE_LUMA_HEADROOM 512

#define	MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE

#define	DITHER1XBPP

#define	ALT32_CORR 1

#define	APCK_PTR2 4

#define	APCK_COEF 8

#define	APCK_SIZE 16

#define	RETCODE_USE_CASCADE -12345

#define	FILL(wfunc)

#define	FILL(wfunc)

#define	MAX_SLICE_PLANES 4

#define	MAX_LINES_AHEAD 4

Horizontal and vertical filters.
To better understand the following fields, here is a pseudo-code of their usage in filtering a horizontal line: for (i = 0; i < width; i++) { dst[i] = 0; for (j = 0; j < filterSize; j++) dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ]; dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point. }
#define	RY_IDX 0

#define	GY_IDX 1

#define	BY_IDX 2

#define	RU_IDX 3

#define	GU_IDX 4

#define	BU_IDX 5

#define	RV_IDX 6

#define	GV_IDX 7

#define	BV_IDX 8

#define	RGB2YUV_SHIFT 15

#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 "118+44*"AV_STRINGIFY(MAX_FILTER_SIZE)

#define	DSTW_OFFSET "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2"

#define	ESP_OFFSET "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2+8"

#define	VROUNDER_OFFSET "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2+16"

#define	U_TEMP "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2+24"

#define	V_TEMP "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2+32"

#define	Y_TEMP "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2+40"

#define	ALP_MMX_FILTER_OFFSET "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"2+48"

#define	UV_OFF_PX "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"3+48"

#define	UV_OFF_BYTE "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"3+56"

#define	DITHER16 "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"3+64"

#define	DITHER32 "118+44"AV_STRINGIFY(MAX_FILTER_SIZE)"3+80"

#define	DITHER32_INT (118+44MAX_FILTER_SIZE3+80)

#define	XYZ_GAMMA (2.6f)

#define	RGB_GAMMA (2.2f)

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). More...

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. More...

typedef void(*	yuv2interleavedX_fn) (enum AVPixelFormat dstFormat, const uint8_t chrDither, 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. More...

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). More...

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. More...

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. More...

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. More...

Enumerations
enum	SwsDither { SWS_DITHER_NONE = 0, SWS_DITHER_AUTO, SWS_DITHER_BAYER, SWS_DITHER_ED, SWS_DITHER_A_DITHER, SWS_DITHER_X_DITHER, NB_SWS_DITHER }

enum	SwsAlphaBlend { SWS_ALPHA_BLEND_NONE = 0, SWS_ALPHA_BLEND_UNIFORM, SWS_ALPHA_BLEND_CHECKERBOARD, SWS_ALPHA_BLEND_NB }

Functions
int	ff_range_add (RangeList *r, unsigned int start, unsigned int len)

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

void	ff_updateMMXDitherTables (SwsContext *c, int dstY)

av_cold void	ff_sws_init_range_convert (SwsContext *c)

SwsFunc	ff_yuv2rgb_init_x86 (SwsContext *c)

SwsFunc	ff_yuv2rgb_init_ppc (SwsContext *c)

static av_always_inline int	is16BPS (enum AVPixelFormat pix_fmt)

static av_always_inline int	is32BPS (enum AVPixelFormat pix_fmt)

static av_always_inline int	isNBPS (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	isSemiPlanarYUV (enum AVPixelFormat pix_fmt)

static av_always_inline int	isRGB (enum AVPixelFormat pix_fmt)

static av_always_inline int	isGray (enum AVPixelFormat pix_fmt)

static av_always_inline int	isRGBinInt (enum AVPixelFormat pix_fmt)

static av_always_inline int	isBGRinInt (enum AVPixelFormat pix_fmt)

static av_always_inline int	isBayer (enum AVPixelFormat pix_fmt)

static av_always_inline int	isBayer16BPS (enum AVPixelFormat pix_fmt)

static av_always_inline int	isAnyRGB (enum AVPixelFormat pix_fmt)

static av_always_inline int	isFloat (enum AVPixelFormat pix_fmt)

static av_always_inline int	isALPHA (enum AVPixelFormat pix_fmt)

static av_always_inline int	isPacked (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)

static av_always_inline int	isDataInHighBits (enum AVPixelFormat pix_fmt)

static av_always_inline int	isSwappedChroma (enum AVPixelFormat pix_fmt)

void	ff_get_unscaled_swscale (SwsContext *c)
	Set c->convert_unscaled to an unscaled converter if one exists for the specific source and destination formats, bit depths, flags, etc. More...

void	ff_get_unscaled_swscale_ppc (SwsContext *c)

void	ff_get_unscaled_swscale_arm (SwsContext *c)

void	ff_get_unscaled_swscale_aarch64 (SwsContext *c)

void	ff_sws_init_scale (SwsContext *c)

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_ppc (SwsContext *c)

void	ff_sws_init_swscale_vsx (SwsContext *c)

void	ff_sws_init_swscale_x86 (SwsContext *c)

void	ff_sws_init_swscale_aarch64 (SwsContext *c)

void	ff_sws_init_swscale_arm (SwsContext *c)

void	ff_hyscale_fast_c (SwsContext c, int16_t dst, int dstWidth, const uint8_t *src, int srcW, int xInc)

void	ff_hcscale_fast_c (SwsContext c, int16_t dst1, int16_t dst2, int dstWidth, const uint8_t src1, const uint8_t *src2, int srcW, int xInc)

int	ff_init_hscaler_mmxext (int dstW, int xInc, uint8_t filterCode, int16_t filter, int32_t *filterPos, int numSplits)

void	ff_hyscale_fast_mmxext (SwsContext c, int16_t dst, int dstWidth, const uint8_t *src, int srcW, int xInc)

void	ff_hcscale_fast_mmxext (SwsContext c, int16_t dst1, int16_t dst2, int dstWidth, const uint8_t src1, const uint8_t *src2, int srcW, int xInc)

struct SwsContext *	sws_alloc_set_opts (int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, const double *param)
	Allocate and return an SwsContext. More...

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

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

static void	fillPlane32 (uint8_t *plane, int stride, int width, int height, int y, int alpha, int bits, const int big_endian, int is_float)

int	ff_init_slice_from_src (SwsSlice s, uint8_t src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH, int relative)

int	ff_init_filters (SwsContext *c)

int	ff_free_filters (SwsContext *c)

int	ff_rotate_slice (SwsSlice *s, int lum, int chr)

int	ff_init_gamma_convert (SwsFilterDescriptor desc, SwsSlice src, uint16_t *table)
	initializes gamma conversion descriptor More...

int	ff_init_desc_fmt_convert (SwsFilterDescriptor desc, SwsSlice src, SwsSlice dst, uint32_t pal)
	initializes lum pixel format conversion descriptor More...

int	ff_init_desc_hscale (SwsFilterDescriptor desc, SwsSlice src, SwsSlice dst, uint16_t filter, int *filter_pos, int filter_size, int xInc)
	initializes lum horizontal scaling descriptor More...

int	ff_init_desc_cfmt_convert (SwsFilterDescriptor desc, SwsSlice src, SwsSlice dst, uint32_t pal)
	initializes chr pixel format conversion descriptor More...

int	ff_init_desc_chscale (SwsFilterDescriptor desc, SwsSlice src, SwsSlice dst, uint16_t filter, int *filter_pos, int filter_size, int xInc)
	initializes chr horizontal scaling descriptor More...

int	ff_init_desc_no_chr (SwsFilterDescriptor desc, SwsSlice src, SwsSlice *dst)

int	ff_init_vscale (SwsContext c, SwsFilterDescriptor desc, SwsSlice src, SwsSlice dst)
	initializes vertical scaling descriptors More...

void	ff_init_vscale_pfn (SwsContext *c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX, yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2, yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx)
	setup vertical scaler functions More...

void	ff_sws_slice_worker (void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads)

int	ff_shuffle_filter_coefficients (SwsContext c, int filterPos, int filterSize, int16_t *filter, int dstW)

Variables
const uint64_t	ff_dither4 [2]

const uint64_t	ff_dither8 [2]

const uint8_t	ff_dither_2x2_4 [3][8]

const uint8_t	ff_dither_2x2_8 [3][8]

const uint8_t	ff_dither_4x4_16 [5][8]

const uint8_t	ff_dither_8x8_32 [9][8]

const uint8_t	ff_dither_8x8_73 [9][8]

const uint8_t	ff_dither_8x8_128 [9][8]

const uint8_t	ff_dither_8x8_220 [9][8]

const int32_t	ff_yuv2rgb_coeffs [11][4]

const AVClass	ff_sws_context_class

Macro Definition Documentation

◆ STR

#define STR ( s ) AV_TOSTRING(s)

Definition at line 39 of file swscale_internal.h.

◆ YUVRGB_TABLE_HEADROOM

#define YUVRGB_TABLE_HEADROOM 512

Definition at line 41 of file swscale_internal.h.

◆ YUVRGB_TABLE_LUMA_HEADROOM

#define YUVRGB_TABLE_LUMA_HEADROOM 512

Definition at line 42 of file swscale_internal.h.

◆ MAX_FILTER_SIZE

#define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE

Definition at line 44 of file swscale_internal.h.

◆ DITHER1XBPP

#define DITHER1XBPP

Definition at line 46 of file swscale_internal.h.

◆ ALT32_CORR

#define ALT32_CORR 1

Definition at line 51 of file swscale_internal.h.

◆ APCK_PTR2

#define APCK_PTR2 4

Definition at line 59 of file swscale_internal.h.

◆ APCK_COEF

#define APCK_COEF 8

Definition at line 60 of file swscale_internal.h.

◆ APCK_SIZE

#define APCK_SIZE 16

Definition at line 61 of file swscale_internal.h.

◆ RETCODE_USE_CASCADE

#define RETCODE_USE_CASCADE -12345

Definition at line 64 of file swscale_internal.h.

◆ RY_IDX

#define RY_IDX 0

Definition at line 439 of file swscale_internal.h.

◆ GY_IDX

#define GY_IDX 1

Definition at line 440 of file swscale_internal.h.

◆ BY_IDX

#define BY_IDX 2

Definition at line 441 of file swscale_internal.h.

◆ RU_IDX

#define RU_IDX 3

Definition at line 442 of file swscale_internal.h.

◆ GU_IDX

#define GU_IDX 4

Definition at line 443 of file swscale_internal.h.

◆ BU_IDX

#define BU_IDX 5

Definition at line 444 of file swscale_internal.h.

◆ RV_IDX

#define RV_IDX 6

Definition at line 445 of file swscale_internal.h.

◆ GV_IDX

#define GV_IDX 7

Definition at line 446 of file swscale_internal.h.

◆ BV_IDX

#define BV_IDX 8

Definition at line 447 of file swscale_internal.h.

◆ RGB2YUV_SHIFT

#define RGB2YUV_SHIFT 15

Definition at line 448 of file swscale_internal.h.

◆ RED_DITHER

#define RED_DITHER "0*8"

Definition at line 473 of file swscale_internal.h.

◆ GREEN_DITHER

#define GREEN_DITHER "1*8"

Definition at line 474 of file swscale_internal.h.

◆ BLUE_DITHER

#define BLUE_DITHER "2*8"

Definition at line 475 of file swscale_internal.h.

◆ Y_COEFF

#define Y_COEFF "3*8"

Definition at line 476 of file swscale_internal.h.

◆ VR_COEFF

#define VR_COEFF "4*8"

Definition at line 477 of file swscale_internal.h.

◆ UB_COEFF

#define UB_COEFF "5*8"

Definition at line 478 of file swscale_internal.h.

◆ VG_COEFF

#define VG_COEFF "6*8"

Definition at line 479 of file swscale_internal.h.

◆ UG_COEFF

#define UG_COEFF "7*8"

Definition at line 480 of file swscale_internal.h.

◆ Y_OFFSET

#define Y_OFFSET "8*8"

Definition at line 481 of file swscale_internal.h.

◆ U_OFFSET

#define U_OFFSET "9*8"

Definition at line 482 of file swscale_internal.h.

◆ V_OFFSET

#define V_OFFSET "10*8"

Definition at line 483 of file swscale_internal.h.

◆ LUM_MMX_FILTER_OFFSET

#define LUM_MMX_FILTER_OFFSET "11*8"

Definition at line 484 of file swscale_internal.h.

◆ CHR_MMX_FILTER_OFFSET

#define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)

Definition at line 485 of file swscale_internal.h.

◆ DSTW_OFFSET

#define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"

Definition at line 486 of file swscale_internal.h.

◆ ESP_OFFSET

#define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"

Definition at line 487 of file swscale_internal.h.

◆ VROUNDER_OFFSET

#define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"

Definition at line 488 of file swscale_internal.h.

◆ U_TEMP

#define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"

Definition at line 489 of file swscale_internal.h.

◆ V_TEMP

#define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"

Definition at line 490 of file swscale_internal.h.

◆ Y_TEMP

#define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"

Definition at line 491 of file swscale_internal.h.

◆ ALP_MMX_FILTER_OFFSET

#define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"

Definition at line 492 of file swscale_internal.h.

◆ UV_OFF_PX

#define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"

Definition at line 493 of file swscale_internal.h.

◆ UV_OFF_BYTE

#define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"

Definition at line 494 of file swscale_internal.h.

◆ DITHER16

#define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"

Definition at line 495 of file swscale_internal.h.

◆ DITHER32

#define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"

Definition at line 496 of file swscale_internal.h.

◆ DITHER32_INT

#define DITHER32_INT (11*8+4*4*MAX_FILTER_SIZE*3+80)

Definition at line 497 of file swscale_internal.h.

◆ XYZ_GAMMA

#define XYZ_GAMMA (2.6f)

Definition at line 544 of file swscale_internal.h.

◆ RGB_GAMMA

#define RGB_GAMMA (2.2f)

Definition at line 545 of file swscale_internal.h.

◆ FILL [1/2]

#define FILL ( wfunc )

Value:

        for (j = 0; j < width; j++) {\
            wfunc(ptr+2*j, v);\
        }

◆ FILL [2/2]

#define FILL ( wfunc )

Value:

        for (j = 0; j < width; j++) {\
            wfunc(ptr+4*j, v);\
        }

◆ MAX_SLICE_PLANES

#define MAX_SLICE_PLANES 4

Definition at line 1051 of file swscale_internal.h.

◆ MAX_LINES_AHEAD

#define MAX_LINES_AHEAD 4

Definition at line 1142 of file swscale_internal.h.

Typedef Documentation

◆ SwsFunc

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

Definition at line 98 of file swscale_internal.h.

◆ yuv2planar1_fn

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

src	scaled source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
dest	pointer to the output plane. For >8-bit output, this is in uint16_t
dstW	width of destination in pixels
dither	ordered dither array of type int16_t and size 8
offset	Dither offset

Definition at line 114 of file swscale_internal.h.

◆ yuv2planarX_fn

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

filter	vertical luma/alpha scaling coefficients, 12 bits [0,4096]
src	scaled luma (Y) or alpha (A) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
filterSize	number of vertical input lines to scale
dest	pointer to output plane. For >8-bit output, this is in uint16_t
dstW	width of destination pixels
offset	Dither offset

Definition at line 130 of file swscale_internal.h.

◆ yuv2interleavedX_fn

typedef void(* yuv2interleavedX_fn) (enum AVPixelFormat dstFormat, const uint8_t *chrDither, 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

dstFormat	destination pixel format
chrDither	ordered dither array of type uint8_t and size 8
chrFilter	vertical chroma scaling coefficients, 12 bits [0,4096]
chrUSrc	scaled chroma (U) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrVSrc	scaled chroma (V) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrFilterSize	number of vertical chroma input lines to scale
dest	pointer to the output plane. For >8-bit output, this is in uint16_t
dstW	width of chroma planes

Definition at line 150 of file swscale_internal.h.

◆ yuv2packed1_fn

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

c	SWS scaling context
lumSrc	scaled luma (Y) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrUSrc	scaled chroma (U) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrVSrc	scaled chroma (V) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
alpSrc	scaled alpha (A) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
dest	pointer to the output plane. For 16-bit output, this is uint16_t
dstW	width of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
uvalpha	chroma 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)
y	vertical 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 187 of file swscale_internal.h.

◆ yuv2packed2_fn

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

c	SWS scaling context
lumSrc	scaled luma (Y) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrUSrc	scaled chroma (U) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrVSrc	scaled chroma (V) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
alpSrc	scaled alpha (A) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
dest	pointer to the output plane. For 16-bit output, this is uint16_t
dstW	width of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
yalpha	luma/alpha scaling coefficients for the second input line. The first line's coefficients can be calculated by using 4096 - yalpha
uvalpha	chroma scaling coefficient for the second input line. The first line's coefficients can be calculated by using 4096 - uvalpha
y	vertical 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 220 of file swscale_internal.h.

◆ yuv2packedX_fn

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

c	SWS scaling context
lumFilter	vertical luma/alpha scaling coefficients, 12 bits [0,4096]
lumSrc	scaled luma (Y) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
lumFilterSize	number of vertical luma/alpha input lines to scale
chrFilter	vertical chroma scaling coefficients, 12 bits [0,4096]
chrUSrc	scaled chroma (U) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrVSrc	scaled chroma (V) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrFilterSize	number of vertical chroma input lines to scale
alpSrc	scaled alpha (A) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
dest	pointer to the output plane. For 16-bit output, this is uint16_t
dstW	width of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
y	vertical 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.

◆ yuv2anyX_fn

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

c	SWS scaling context
lumFilter	vertical luma/alpha scaling coefficients, 12 bits [0,4096]
lumSrc	scaled luma (Y) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
lumFilterSize	number of vertical luma/alpha input lines to scale
chrFilter	vertical chroma scaling coefficients, 12 bits [0,4096]
chrUSrc	scaled chroma (U) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrVSrc	scaled chroma (V) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
chrFilterSize	number of vertical chroma input lines to scale
alpSrc	scaled alpha (A) source data, 15 bits for 8-10-bit output, 19 bits for 16-bit output (in int32_t)
dest	pointer to the output planes. For 16-bit output, this is uint16_t
dstW	width of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
y	vertical 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 286 of file swscale_internal.h.

Enumeration Type Documentation

◆ SwsDither

enum SwsDither

Enumerator
SWS_DITHER_NONE
SWS_DITHER_AUTO
SWS_DITHER_BAYER
SWS_DITHER_ED
SWS_DITHER_A_DITHER
SWS_DITHER_X_DITHER
NB_SWS_DITHER

Definition at line 68 of file swscale_internal.h.

◆ SwsAlphaBlend

enum SwsAlphaBlend

Enumerator
SWS_ALPHA_BLEND_NONE
SWS_ALPHA_BLEND_UNIFORM
SWS_ALPHA_BLEND_CHECKERBOARD
SWS_ALPHA_BLEND_NB

Definition at line 78 of file swscale_internal.h.

Function Documentation

◆ ff_range_add()

int ff_range_add	(	RangeList *	r,
		unsigned int	start,
		unsigned int	len
	)

Definition at line 2517 of file utils.c.

Referenced by sws_send_slice().

◆ ff_yuv2rgb_get_func_ptr()

SwsFunc ff_yuv2rgb_get_func_ptr ( SwsContext * c )

Definition at line 678 of file yuv2rgb.c.

Referenced by ff_get_unscaled_swscale().

◆ ff_yuv2rgb_c_init_tables()

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

Definition at line 774 of file yuv2rgb.c.

Referenced by sws_setColorspaceDetails().

◆ ff_yuv2rgb_init_tables_ppc()

void ff_yuv2rgb_init_tables_ppc	(	SwsContext *	c,
		const int	inv_table[4],
		int	brightness,
		int	contrast,
		int	saturation
	)

Definition at line 598 of file yuv2rgb_altivec.c.

Referenced by sws_setColorspaceDetails().

◆ ff_updateMMXDitherTables()

void ff_updateMMXDitherTables	(	SwsContext *	c,
		int	dstY
	)

Referenced by swscale().

◆ ff_sws_init_range_convert()

av_cold void ff_sws_init_range_convert ( SwsContext * c )

Definition at line 532 of file swscale.c.

Referenced by sws_init_swscale(), and sws_setColorspaceDetails().

◆ ff_yuv2rgb_init_x86()

SwsFunc ff_yuv2rgb_init_x86 ( SwsContext * c )

Definition at line 68 of file yuv2rgb.c.

Referenced by ff_yuv2rgb_get_func_ptr().

◆ ff_yuv2rgb_init_ppc()

SwsFunc ff_yuv2rgb_init_ppc ( SwsContext * c )

Definition at line 535 of file yuv2rgb_altivec.c.

Referenced by ff_yuv2rgb_get_func_ptr().

◆ is16BPS()

static av_always_inline int is16BPS ( enum AVPixelFormat pix_fmt )

static

Definition at line 694 of file swscale_internal.h.

Referenced by ff_sws_init_output_funcs(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_vsx(), planarCopyWrapper(), rgb9plus_planar_funcs(), sws_init_context(), sws_init_swscale_TMPL(), sws_setColorspaceDetails(), and swscale().

◆ is32BPS()

static av_always_inline int is32BPS ( enum AVPixelFormat pix_fmt )

static

Definition at line 701 of file swscale_internal.h.

Referenced by swscale().

◆ isNBPS()

static av_always_inline int isNBPS ( enum AVPixelFormat pix_fmt )

static

Definition at line 708 of file swscale_internal.h.

Referenced by ff_sws_init_output_funcs(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_vsx(), planarCopyWrapper(), rgb9plus_planar_funcs(), sws_init_context(), sws_init_swscale_TMPL(), sws_setColorspaceDetails(), and swscale().

◆ isBE()

static av_always_inline int isBE ( enum AVPixelFormat pix_fmt )

static

Definition at line 715 of file swscale_internal.h.

Referenced by ff_sws_alphablendaway(), ff_sws_init_output_funcs(), ff_sws_init_swscale_vsx(), ff_sws_init_swscale_x86(), planarCopyWrapper(), rgb9plus_planar_funcs(), swscale(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), and yuv2gbrpf32_full_X_c().

◆ isYUV()

static av_always_inline int isYUV ( enum AVPixelFormat pix_fmt )

static

Definition at line 722 of file swscale_internal.h.

Referenced by isPlanarYUV(), isSwappedChroma(), range_override_needed(), and sws_setColorspaceDetails().

◆ isPlanarYUV()

static av_always_inline int isPlanarYUV ( enum AVPixelFormat pix_fmt )

static

Definition at line 729 of file swscale_internal.h.

Referenced by isSemiPlanarYUV(), and isSwappedChroma().

◆ isSemiPlanarYUV()

static av_always_inline int isSemiPlanarYUV ( enum AVPixelFormat pix_fmt )

static

Definition at line 740 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_sws_init_output_funcs(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_vsx(), isSwappedChroma(), and sws_init_swscale_TMPL().

◆ isRGB()

static av_always_inline int isRGB ( enum AVPixelFormat pix_fmt )

static

Definition at line 747 of file swscale_internal.h.

◆ isGray()

static av_always_inline int isGray ( enum AVPixelFormat pix_fmt )

static

Definition at line 754 of file swscale_internal.h.

◆ isRGBinInt()

static av_always_inline int isRGBinInt ( enum AVPixelFormat pix_fmt )

static

Definition at line 765 of file swscale_internal.h.

Referenced by findRgbConvFn().

◆ isBGRinInt()

static av_always_inline int isBGRinInt ( enum AVPixelFormat pix_fmt )

static

Definition at line 787 of file swscale_internal.h.

Referenced by findRgbConvFn().

◆ isBayer()

static av_always_inline int isBayer ( enum AVPixelFormat pix_fmt )

static

Definition at line 809 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), scale_internal(), and sws_init_context().

◆ isBayer16BPS()

static av_always_inline int isBayer16BPS ( enum AVPixelFormat pix_fmt )

static

Definition at line 816 of file swscale_internal.h.

Referenced by sws_init_context().

◆ isAnyRGB()

static av_always_inline int isAnyRGB ( enum AVPixelFormat pix_fmt )

static

Definition at line 823 of file swscale_internal.h.

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

◆ isFloat()

static av_always_inline int isFloat ( enum AVPixelFormat pix_fmt )

static

Definition at line 831 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), planarCopyWrapper(), and sws_init_context().

◆ isALPHA()

static av_always_inline int isALPHA ( enum AVPixelFormat pix_fmt )

static

Definition at line 838 of file swscale_internal.h.

◆ isPacked()

static av_always_inline int isPacked ( enum AVPixelFormat pix_fmt )

static

Definition at line 847 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), and swscale().

◆ isPlanar()

static av_always_inline int isPlanar ( enum AVPixelFormat pix_fmt )

static

Definition at line 856 of file swscale_internal.h.

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

◆ isPackedRGB()

static av_always_inline int isPackedRGB ( enum AVPixelFormat pix_fmt )

static

Definition at line 863 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale().

◆ isPlanarRGB()

static av_always_inline int isPlanarRGB ( enum AVPixelFormat pix_fmt )

static

Definition at line 870 of file swscale_internal.h.

Referenced by sws_init_context().

◆ usePal()

static av_always_inline int usePal ( enum AVPixelFormat pix_fmt )

static

Definition at line 878 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_init_filters(), palToRgbWrapper(), reset_ptr(), and scale_internal().

◆ isDataInHighBits()

static av_always_inline int isDataInHighBits ( enum AVPixelFormat pix_fmt )

static

Definition at line 896 of file swscale_internal.h.

Referenced by ff_sws_init_output_funcs().

◆ isSwappedChroma()

static av_always_inline int isSwappedChroma ( enum AVPixelFormat pix_fmt )

static

Definition at line 915 of file swscale_internal.h.

Referenced by yuv2nv12cX_c().

◆ ff_get_unscaled_swscale()

void ff_get_unscaled_swscale ( SwsContext * c )

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

Definition at line 1974 of file swscale_unscaled.c.

Referenced by sws_init_context().

◆ ff_get_unscaled_swscale_ppc()

void ff_get_unscaled_swscale_ppc ( SwsContext * c )

Definition at line 187 of file yuv2yuv_altivec.c.

Referenced by ff_get_unscaled_swscale().

◆ ff_get_unscaled_swscale_arm()

void ff_get_unscaled_swscale_arm ( SwsContext * c )

Definition at line 183 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

◆ ff_get_unscaled_swscale_aarch64()

void ff_get_unscaled_swscale_aarch64 ( SwsContext * c )

Definition at line 124 of file swscale_unscaled.c.

Referenced by ff_get_unscaled_swscale().

◆ ff_sws_init_scale()

void ff_sws_init_scale ( SwsContext * c )

Definition at line 589 of file swscale.c.

Referenced by check_hscale(), check_input_planar_rgb_to_a(), check_input_planar_rgb_to_uv(), check_input_planar_rgb_to_y(), check_output_yuv2gbrp(), check_yuv2yuvX(), and sws_init_context().

◆ ff_sws_init_input_funcs()

void ff_sws_init_input_funcs ( SwsContext * c )

Referenced by sws_init_swscale().

◆ ff_sws_init_output_funcs()

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 2587 of file output.c.

Referenced by sws_init_swscale(), and swscale().

◆ ff_sws_init_swscale_ppc()

void ff_sws_init_swscale_ppc ( SwsContext * c )

Definition at line 238 of file swscale_altivec.c.

Referenced by ff_sws_init_scale().

◆ ff_sws_init_swscale_vsx()

void ff_sws_init_swscale_vsx ( SwsContext * c )

Definition at line 2077 of file swscale_vsx.c.

Referenced by ff_sws_init_swscale_ppc().

◆ ff_sws_init_swscale_x86()

void ff_sws_init_swscale_x86 ( SwsContext * c )

Definition at line 450 of file swscale.c.

Referenced by ff_sws_init_scale().

◆ ff_sws_init_swscale_aarch64()

void ff_sws_init_swscale_aarch64 ( SwsContext * c )

Definition at line 58 of file swscale.c.

Referenced by ff_sws_init_scale().

◆ ff_sws_init_swscale_arm()

void ff_sws_init_swscale_arm ( SwsContext * c )

Definition at line 33 of file swscale.c.

Referenced by ff_sws_init_scale().

◆ ff_hyscale_fast_c()

void ff_hyscale_fast_c	(	SwsContext *	c,
		int16_t *	dst,
		int	dstWidth,
		const uint8_t *	src,
		int	srcW,
		int	xInc
	)

Definition at line 23 of file hscale_fast_bilinear.c.

Referenced by sws_init_swscale().

◆ ff_hcscale_fast_c()

void ff_hcscale_fast_c	(	SwsContext *	c,
		int16_t *	dst1,
		int16_t *	dst2,
		int	dstWidth,
		const uint8_t *	src1,
		const uint8_t *	src2,
		int	srcW,
		int	xInc
	)

Definition at line 38 of file hscale_fast_bilinear.c.

Referenced by sws_init_swscale().

◆ ff_init_hscaler_mmxext()

int ff_init_hscaler_mmxext	(	int	dstW,
		int	xInc,
		uint8_t *	filterCode,
		int16_t *	filter,
		int32_t *	filterPos,
		int	numSplits
	)

Referenced by sws_init_context().

◆ ff_hyscale_fast_mmxext()

void ff_hyscale_fast_mmxext	(	SwsContext *	c,
		int16_t *	dst,
		int	dstWidth,
		const uint8_t *	src,
		int	srcW,
		int	xInc
	)

Referenced by sws_init_swscale_TMPL().

◆ ff_hcscale_fast_mmxext()

void ff_hcscale_fast_mmxext	(	SwsContext *	c,
		int16_t *	dst1,
		int16_t *	dst2,
		int	dstWidth,
		const uint8_t *	src1,
		const uint8_t *	src2,
		int	srcW,
		int	xInc
	)

Referenced by sws_init_swscale_TMPL().

◆ sws_alloc_set_opts()

struct SwsContext* sws_alloc_set_opts	(	int	srcW,
		int	srcH,
		enum AVPixelFormat	srcFormat,
		int	dstW,
		int	dstH,
		enum AVPixelFormat	dstFormat,
		int	flags,
		const double *	param
	)

Allocate and return an SwsContext.

This is like sws_getContext() but does not perform the init step, allowing the user to set additional AVOptions.

See also: sws_getContext()

Definition at line 2025 of file utils.c.

Referenced by sws_getContext(), sws_init_context(), and sws_setColorspaceDetails().

◆ ff_sws_alphablendaway()

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

Definition at line 23 of file alphablend.c.

Referenced by sws_init_context().

◆ fillPlane16()

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 1002 of file swscale_internal.h.

Referenced by planarCopyWrapper(), and swscale().

◆ fillPlane32()

static void fillPlane32	(	uint8_t *	plane,
		int	stride,
		int	width,
		int	height,
		int	y,
		int	alpha,
		int	bits,
		const int	big_endian,
		int	is_float
	)

inlinestatic

Definition at line 1023 of file swscale_internal.h.

Referenced by swscale().

◆ ff_init_slice_from_src()

int ff_init_slice_from_src	(	SwsSlice *	s,
		uint8_t *	src[4],
		int	stride[4],
		int	srcW,
		int	lumY,
		int	lumH,
		int	chrY,
		int	chrH,
		int	relative
	)

Definition at line 147 of file slice.c.

Referenced by swscale().

◆ ff_init_filters()

int ff_init_filters ( SwsContext * c )

Definition at line 248 of file slice.c.

Referenced by sws_init_context().

◆ ff_free_filters()

int ff_free_filters ( SwsContext * c )

Definition at line 382 of file slice.c.

Referenced by ff_init_filters(), sws_freeContext(), and sws_init_context().

◆ ff_rotate_slice()

int ff_rotate_slice	(	SwsSlice *	s,
		int	lum,
		int	chr
	)

Definition at line 119 of file slice.c.

Referenced by swscale().

◆ ff_init_gamma_convert()

int ff_init_gamma_convert	(	SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		uint16_t *	table
	)

initializes gamma conversion descriptor

Definition at line 58 of file gamma.c.

Referenced by ff_init_filters().

◆ ff_init_desc_fmt_convert()

int ff_init_desc_fmt_convert	(	SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		SwsSlice *	dst,
		uint32_t *	pal
	)

initializes lum pixel format conversion descriptor

Definition at line 127 of file hscale.c.

Referenced by ff_init_filters().

◆ ff_init_desc_hscale()

int ff_init_desc_hscale	(	SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		SwsSlice *	dst,
		uint16_t *	filter,
		int *	filter_pos,
		int	filter_size,
		int	xInc
	)

initializes lum horizontal scaling descriptor

Definition at line 144 of file hscale.c.

Referenced by ff_init_filters().

◆ ff_init_desc_cfmt_convert()

int ff_init_desc_cfmt_convert	(	SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		SwsSlice *	dst,
		uint32_t *	pal
	)

initializes chr pixel format conversion descriptor

Definition at line 235 of file hscale.c.

Referenced by ff_init_filters().

◆ ff_init_desc_chscale()

int ff_init_desc_chscale	(	SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		SwsSlice *	dst,
		uint16_t *	filter,
		int *	filter_pos,
		int	filter_size,
		int	xInc
	)

initializes chr horizontal scaling descriptor

Definition at line 250 of file hscale.c.

Referenced by ff_init_filters().

◆ ff_init_desc_no_chr()

int ff_init_desc_no_chr	(	SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		SwsSlice *	dst
	)

Definition at line 281 of file hscale.c.

Referenced by ff_init_filters().

◆ ff_init_vscale()

int ff_init_vscale	(	SwsContext *	c,
		SwsFilterDescriptor *	desc,
		SwsSlice *	src,
		SwsSlice *	dst
	)

initializes vertical scaling descriptors

Definition at line 213 of file vscale.c.

Referenced by ff_init_filters().

◆ ff_init_vscale_pfn()

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

setup vertical scaler functions

Definition at line 257 of file vscale.c.

Referenced by ff_init_vscale(), and swscale().

◆ ff_sws_slice_worker()

void ff_sws_slice_worker	(	void *	priv,
		int	jobnr,
		int	threadnr,
		int	nb_jobs,
		int	nb_threads
	)

Definition at line 1214 of file swscale.c.

Referenced by context_init_threaded().

◆ ff_shuffle_filter_coefficients()

int ff_shuffle_filter_coefficients	(	SwsContext *	c,
		int *	filterPos,
		int	filterSize,
		int16_t *	filter,
		int	dstW
	)

Definition at line 262 of file utils.c.

Referenced by check_hscale(), and sws_init_context().

Variable Documentation

◆ ff_dither4

const uint64_t ff_dither4[2]

Definition at line 33 of file swscale.c.

Referenced by yuv420_rgb16_TMPL().

◆ ff_dither8

const uint64_t ff_dither8[2]

Definition at line 37 of file swscale.c.

Referenced by yuv420_rgb15_TMPL(), and yuv420_rgb16_TMPL().

◆ ff_dither_2x2_4

const uint8_t ff_dither_2x2_4[3][8]

Definition at line 39 of file output.c.

Referenced by yuv2rgb_write().

◆ ff_dither_2x2_8

const uint8_t ff_dither_2x2_8[3][8]

Definition at line 45 of file output.c.

Referenced by yuv2rgb_write().

◆ ff_dither_4x4_16

const uint8_t ff_dither_4x4_16[5][8]

Definition at line 51 of file output.c.

Referenced by yuv2rgb_write().

◆ ff_dither_8x8_32

const uint8_t ff_dither_8x8_32[9][8]

Definition at line 59 of file output.c.

Referenced by yuv2rgb_write().

◆ ff_dither_8x8_73

const uint8_t ff_dither_8x8_73[9][8]

Definition at line 71 of file output.c.

Referenced by yuv2rgb_write().

◆ ff_dither_8x8_128

const uint8_t ff_dither_8x8_128[9][8]

Definition at line 36 of file swscale.c.

Referenced by swscale().

◆ ff_dither_8x8_220

const uint8_t ff_dither_8x8_220[9][8]

Definition at line 84 of file output.c.

Referenced by yuv2mono_1_c_template(), yuv2mono_2_c_template(), yuv2mono_X_c_template(), and yuv2rgb_write().

◆ ff_yuv2rgb_coeffs

const int32_t ff_yuv2rgb_coeffs[11][4]

Definition at line 48 of file yuv2rgb.c.

Referenced by sws_getCoefficients(), and sws_init_context().

◆ ff_sws_context_class

const AVClass ff_sws_context_class

Definition at line 88 of file options.c.

Referenced by sws_alloc_context(), and sws_get_class().

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ STR

◆ YUVRGB_TABLE_HEADROOM

◆ YUVRGB_TABLE_LUMA_HEADROOM

◆ MAX_FILTER_SIZE

◆ DITHER1XBPP

◆ ALT32_CORR

◆ APCK_PTR2

◆ APCK_COEF

◆ APCK_SIZE

◆ RETCODE_USE_CASCADE

◆ RY_IDX

◆ GY_IDX

◆ BY_IDX

◆ RU_IDX

◆ GU_IDX

◆ BU_IDX

◆ RV_IDX

◆ GV_IDX

◆ BV_IDX

◆ RGB2YUV_SHIFT

◆ RED_DITHER

◆ GREEN_DITHER

◆ BLUE_DITHER

◆ Y_COEFF

◆ VR_COEFF

◆ UB_COEFF

◆ VG_COEFF

◆ UG_COEFF

◆ Y_OFFSET

◆ U_OFFSET

◆ V_OFFSET

◆ LUM_MMX_FILTER_OFFSET

◆ CHR_MMX_FILTER_OFFSET

◆ DSTW_OFFSET

◆ ESP_OFFSET

◆ VROUNDER_OFFSET

◆ U_TEMP

◆ V_TEMP

◆ Y_TEMP

◆ ALP_MMX_FILTER_OFFSET

◆ UV_OFF_PX

◆ UV_OFF_BYTE

◆ DITHER16

◆ DITHER32

◆ DITHER32_INT

◆ XYZ_GAMMA

◆ RGB_GAMMA

◆ FILL [1/2]

◆ FILL [2/2]

◆ MAX_SLICE_PLANES

◆ MAX_LINES_AHEAD

Typedef Documentation

◆ SwsFunc

◆ yuv2planar1_fn

◆ yuv2planarX_fn

◆ yuv2interleavedX_fn

◆ yuv2packed1_fn

◆ yuv2packed2_fn

◆ yuv2packedX_fn

◆ yuv2anyX_fn

Enumeration Type Documentation

◆ SwsDither

◆ SwsAlphaBlend

Function Documentation

◆ ff_range_add()

◆ ff_yuv2rgb_get_func_ptr()

◆ ff_yuv2rgb_c_init_tables()

◆ ff_yuv2rgb_init_tables_ppc()

◆ ff_updateMMXDitherTables()

◆ ff_sws_init_range_convert()

◆ ff_yuv2rgb_init_x86()

◆ ff_yuv2rgb_init_ppc()

◆ is16BPS()