#include <libswscale/swscale_internal.h>

Data Fields
const AVClass *	av_class
	info on struct for av_log More...

SwsFunc	swscale
	Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be freely modified here. More...

int	srcW
	Width of source luma/alpha planes. More...

int	srcH
	Height of source luma/alpha planes. More...

int	dstH
	Height of destination luma/alpha planes. More...

int	chrSrcW
	Width of source chroma planes. More...

int	chrSrcH
	Height of source chroma planes. More...

int	chrDstW
	Width of destination chroma planes. More...

int	chrDstH
	Height of destination chroma planes. More...

int	lumXInc

int	chrXInc

int	lumYInc

int	chrYInc

enum AVPixelFormat	dstFormat
	Destination pixel format. More...

enum AVPixelFormat	srcFormat
	Source pixel format. More...

int	dstFormatBpp
	Number of bits per pixel of the destination pixel format. More...

int	srcFormatBpp
	Number of bits per pixel of the source pixel format. More...

int	dstBpc

int	srcBpc

int	chrSrcHSubSample
	Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image. More...

int	chrSrcVSubSample
	Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image. More...

int	chrDstHSubSample
	Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image. More...

int	chrDstVSubSample
	Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image. More...

int	vChrDrop
	Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user. More...

int	sliceDir
	Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top). More...

double	param [2]
	Input parameters for scaling algorithms that need them. More...

struct SwsContext *	cascaded_context [3]

int	cascaded_tmpStride [4]

uint8_t *	cascaded_tmp [4]

int	cascaded1_tmpStride [4]

uint8_t *	cascaded1_tmp [4]

int	cascaded_mainindex

double	gamma_value

int	gamma_flag

int	is_internal_gamma

uint16_t *	gamma

uint16_t *	inv_gamma

int	numDesc

int	descIndex [2]

int	numSlice

struct SwsSlice *	slice

struct SwsFilterDescriptor *	desc

uint32_t	pal_yuv [256]

uint32_t	pal_rgb [256]

uint8_t *	formatConvBuffer

int	needAlpha

int	lumMmxextFilterCodeSize
	Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes. More...

int	chrMmxextFilterCodeSize
	Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes. More...

uint8_t *	lumMmxextFilterCode
	Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes. More...

uint8_t *	chrMmxextFilterCode
	Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes. More...

int	canMMXEXTBeUsed

int	warned_unuseable_bilinear

int	dstY
	Last destination vertical line output from last slice. More...

int	flags
	Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc... More...

void *	yuvTable

int	table_gV [256+2 *YUVRGB_TABLE_HEADROOM]

uint8_t *	table_rV [256+2 *YUVRGB_TABLE_HEADROOM]

uint8_t *	table_gU [256+2 *YUVRGB_TABLE_HEADROOM]

uint8_t *	table_bU [256+2 *YUVRGB_TABLE_HEADROOM]

int32_t	input_rgb2yuv_table [16+40 *4]

int *	dither_error [4]

int	contrast

int	brightness

int	saturation

int	srcColorspaceTable [4]

int	dstColorspaceTable [4]

int	srcRange
	0 = MPG YUV range, 1 = JPG YUV range (source image). More...

int	dstRange
	0 = MPG YUV range, 1 = JPG YUV range (destination image). More...

int	src0Alpha

int	dst0Alpha

int	srcXYZ

int	dstXYZ

int	src_h_chr_pos

int	dst_h_chr_pos

int	src_v_chr_pos

int	dst_v_chr_pos

int	yuv2rgb_y_offset

int	yuv2rgb_y_coeff

int	yuv2rgb_v2r_coeff

int	yuv2rgb_v2g_coeff

int	yuv2rgb_u2g_coeff

int	yuv2rgb_u2b_coeff

uint64_t	redDither

uint64_t	greenDither

uint64_t	blueDither

uint64_t	yCoeff

uint64_t	vrCoeff

uint64_t	ubCoeff

uint64_t	vgCoeff

uint64_t	ugCoeff

uint64_t	yOffset

uint64_t	uOffset

uint64_t	vOffset

int32_t	lumMmxFilter [4 *MAX_FILTER_SIZE]

int32_t	chrMmxFilter [4 *MAX_FILTER_SIZE]

int	dstW
	Width of destination luma/alpha planes. More...

uint64_t	esp

uint64_t	vRounder

uint64_t	u_temp

uint64_t	v_temp

uint64_t	y_temp

int32_t	alpMmxFilter [4 *MAX_FILTER_SIZE]

ptrdiff_t	uv_off
	offset (in pixels) between u and v planes More...

ptrdiff_t	uv_offx2
	offset (in bytes) between u and v planes More...

uint16_t	dither16 [8]

uint32_t	dither32 [8]

const uint8_t *	chrDither8

const uint8_t *	lumDither8

int	use_mmx_vfilter

int16_t *	xyzgamma

int16_t *	rgbgamma

int16_t *	xyzgammainv

int16_t *	rgbgammainv

int16_t	xyz2rgb_matrix [3][4]

int16_t	rgb2xyz_matrix [3][4]

yuv2planar1_fn	yuv2plane1

yuv2planarX_fn	yuv2planeX

yuv2interleavedX_fn	yuv2nv12cX

yuv2packed1_fn	yuv2packed1

yuv2packed2_fn	yuv2packed2

yuv2packedX_fn	yuv2packedX

yuv2anyX_fn	yuv2anyX

void(*	lumToYV12 )(uint8_t dst, const uint8_t src, const uint8_t src2, const uint8_t src3, int width, uint32_t *pal)
	Unscaled conversion of luma plane to YV12 for horizontal scaler. More...

void(*	alpToYV12 )(uint8_t dst, const uint8_t src, const uint8_t src2, const uint8_t src3, int width, uint32_t *pal)
	Unscaled conversion of alpha plane to YV12 for horizontal scaler. More...

void(*	chrToYV12 )(uint8_t dstU, uint8_t dstV, const uint8_t src1, const uint8_t src2, const uint8_t src3, int width, uint32_t pal)
	Unscaled conversion of chroma planes to YV12 for horizontal scaler. More...

void(*	lumConvertRange )(int16_t *dst, int width)
	Color range conversion function for luma plane if needed. More...

void(*	chrConvertRange )(int16_t dst1, int16_t dst2, int width)
	Color range conversion function for chroma planes if needed. More...

int	needs_hcscale
	Set if there are chroma planes to be converted. More...

SwsDither	dither

SwsAlphaBlend	alphablend

Scaled horizontal lines ring buffer.
The horizontal scaler keeps just enough scaled lines in a ring buffer so they may be passed to the vertical scaler. The pointers to the allocated buffers for each line are duplicated in sequence in the ring buffer to simplify indexing and avoid wrapping around between lines inside the vertical scaler code. The wrapping is done before the vertical scaler is called.
int	lastInLumBuf
	Last scaled horizontal luma/alpha line from source in the ring buffer. More...

int	lastInChrBuf
	Last scaled horizontal chroma line from source in the ring buffer. More...

int	lumBufIndex
	Index in ring buffer of the last scaled horizontal luma/alpha line from source. More...

int	chrBufIndex
	Index in ring buffer of the last scaled horizontal chroma line from source. More...

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. }
int16_t *	hLumFilter
	Array of horizontal filter coefficients for luma/alpha planes. More...

int16_t *	hChrFilter
	Array of horizontal filter coefficients for chroma planes. More...

int16_t *	vLumFilter
	Array of vertical filter coefficients for luma/alpha planes. More...

int16_t *	vChrFilter
	Array of vertical filter coefficients for chroma planes. More...

int32_t *	hLumFilterPos
	Array of horizontal filter starting positions for each dst[i] for luma/alpha planes. More...

int32_t *	hChrFilterPos
	Array of horizontal filter starting positions for each dst[i] for chroma planes. More...

int32_t *	vLumFilterPos
	Array of vertical filter starting positions for each dst[i] for luma/alpha planes. More...

int32_t *	vChrFilterPos
	Array of vertical filter starting positions for each dst[i] for chroma planes. More...

int	hLumFilterSize
	Horizontal filter size for luma/alpha pixels. More...

int	hChrFilterSize
	Horizontal filter size for chroma pixels. More...

int	vLumFilterSize
	Vertical filter size for luma/alpha pixels. More...

int	vChrFilterSize
	Vertical filter size for chroma pixels. More...


void(*	readLumPlanar )(uint8_t dst, const uint8_t src[4], int width, int32_t *rgb2yuv)
	Functions to read planar input, such as planar RGB, and convert internally to Y/UV/A. More...

void(*	readChrPlanar )(uint8_t dstU, uint8_t dstV, const uint8_t src[4], int width, int32_t rgb2yuv)

void(*	readAlpPlanar )(uint8_t dst, const uint8_t src[4], int width, int32_t *rgb2yuv)


void(*	hyscale_fast )(struct SwsContext c, int16_t dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
	Scale one horizontal line of input data using a bilinear filter to produce one line of output data. More...

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


void(*	hyScale )(struct SwsContext c, int16_t dst, int dstW, const uint8_t src, const int16_t filter, const int32_t *filterPos, int filterSize)
	Scale one horizontal line of input data using a filter over the input lines, to produce one (differently sized) line of output data. More...

void(*	hcScale )(struct SwsContext c, int16_t dst, int dstW, const uint8_t src, const int16_t filter, const int32_t *filterPos, int filterSize)

Detailed Description

Examples:: muxing.c, and scaling_video.c.

Definition at line 280 of file swscale_internal.h.

Field Documentation

◆ av_class

const AVClass* SwsContext::av_class

info on struct for av_log

Definition at line 284 of file swscale_internal.h.

Referenced by sws_alloc_context().

◆ swscale

SwsFunc SwsContext::swscale

Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be freely modified here.

Definition at line 290 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_get_unscaled_swscale_ppc(), sws_init_context(), and sws_scale().

◆ srcW

int SwsContext::srcW

Width of source luma/alpha planes.

Definition at line 291 of file swscale_internal.h.

Referenced by bayer_to_rgb24_wrapper(), bayer_to_yv12_wrapper(), bgr24ToYv12Wrapper(), doTest(), ff_get_unscaled_swscale_ppc(), ff_init_filters(), ff_sws_alphablendaway(), ff_yuv2rgb_init_ppc(), nv12ToPlanarWrapper(), packedCopyWrapper(), palToRgbWrapper(), planar8ToP01xleWrapper(), planarCopyWrapper(), planarRgb16ToRgb16Wrapper(), planarRgbToplanarRgbWrapper(), planarRgbToRgbWrapper(), planarToNv12Wrapper(), planarToP01xWrapper(), planarToUyvyWrapper(), planarToYuy2Wrapper(), Rgb16ToPlanarRgb16Wrapper(), rgbToPlanarRgbWrapper(), rgbToRgbWrapper(), selfTest(), sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_scale(), sws_setColorspaceDetails(), swscale(), usePal(), uyvyToYuv420Wrapper(), uyvyToYuv422Wrapper(), yuv422pToUyvyWrapper(), yuv422pToYuy2Wrapper(), yuyvToYuv420Wrapper(), yuyvToYuv422Wrapper(), and yvu9ToYv12Wrapper().

◆ srcH

int SwsContext::srcH

Height of source luma/alpha planes.

Definition at line 292 of file swscale_internal.h.

Referenced by doTest(), ff_init_filters(), ff_yuv2rgb_init_ppc(), selfTest(), sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_scale(), sws_setColorspaceDetails(), swscale(), and usePal().

◆ dstH

int SwsContext::dstH

Height of destination luma/alpha planes.

Definition at line 293 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_init_filters(), get_min_buffer_size(), selfTest(), sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_scale(), sws_setColorspaceDetails(), swscale(), and usePal().

◆ chrSrcW

int SwsContext::chrSrcW

Width of source chroma planes.

Definition at line 294 of file swscale_internal.h.

Referenced by ff_sws_alphablendaway(), sws_init_context(), and yvu9ToYv12Wrapper().

◆ chrSrcH

int SwsContext::chrSrcH

Height of source chroma planes.

Definition at line 295 of file swscale_internal.h.

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

◆ chrDstW

int SwsContext::chrDstW

Width of destination chroma planes.

Definition at line 296 of file swscale_internal.h.

Referenced by sws_init_context().

◆ chrDstH

int SwsContext::chrDstH

Height of destination chroma planes.

Definition at line 297 of file swscale_internal.h.

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

◆ lumXInc

int SwsContext::lumXInc

Definition at line 298 of file swscale_internal.h.

Referenced by ff_init_filters(), and sws_init_context().

◆ chrXInc

int SwsContext::chrXInc

Definition at line 298 of file swscale_internal.h.

Referenced by ff_init_filters(), and sws_init_context().

◆ lumYInc

int SwsContext::lumYInc

Definition at line 299 of file swscale_internal.h.

Referenced by sws_init_context().

◆ chrYInc

int SwsContext::chrYInc

Definition at line 299 of file swscale_internal.h.

Referenced by sws_init_context().

◆ dstFormat

enum AVPixelFormat SwsContext::dstFormat

Destination pixel format.

Definition at line 300 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_get_unscaled_swscale_ppc(), ff_init_filters(), ff_init_vscale(), ff_init_vscale_pfn(), ff_sws_init_output_funcs(), ff_sws_init_range_convert(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), ff_yuv2rgb_c_init_tables(), ff_yuv2rgb_init_ppc(), ff_yuv2rgb_init_tables_ppc(), ff_yuv2rgb_init_x86(), findRgbConvFn(), handle_formats(), palToRgbWrapper(), planarCopyWrapper(), planarRgb16ToRgb16Wrapper(), planarRgbToRgbWrapper(), planarToNv12Wrapper(), planarToP01xWrapper(), Rgb16ToPlanarRgb16Wrapper(), rgb48Toxyz12(), rgbToPlanarRgbWrapper(), rgbToRgbWrapper(), selfTest(), sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_init_swscale(), sws_scale(), sws_setColorspaceDetails(), swscale(), usePal(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2nv12cX_c(), yuv2p010cX_c(), and yuv2p016cX_c().

◆ srcFormat

enum AVPixelFormat SwsContext::srcFormat

◆ dstFormatBpp

int SwsContext::dstFormatBpp

Number of bits per pixel of the destination pixel format.

Definition at line 302 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_yuv2rgb_c_init_tables(), findRgbConvFn(), rgbToRgbWrapper(), sws_init_context(), and sws_setColorspaceDetails().

◆ srcFormatBpp

int SwsContext::srcFormatBpp

Number of bits per pixel of the source pixel format.

Definition at line 303 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), findRgbConvFn(), rgbToRgbWrapper(), sws_init_context(), and sws_setColorspaceDetails().

◆ dstBpc

int SwsContext::dstBpc

Definition at line 304 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_sws_init_range_convert(), ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), sws_init_context(), and sws_init_swscale().

◆ srcBpc

int SwsContext::srcBpc

Definition at line 304 of file swscale_internal.h.

Referenced by ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_ppc(), sws_init_context(), sws_init_swscale(), and sws_setColorspaceDetails().

◆ chrSrcHSubSample

int SwsContext::chrSrcHSubSample

Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.

Definition at line 305 of file swscale_internal.h.

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

◆ chrSrcVSubSample

int SwsContext::chrSrcVSubSample

Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.

Definition at line 306 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_init_filters(), get_min_buffer_size(), sws_init_context(), sws_scale(), and swscale().

◆ chrDstHSubSample

int SwsContext::chrDstHSubSample

Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.

Definition at line 307 of file swscale_internal.h.

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

◆ chrDstVSubSample

int SwsContext::chrDstVSubSample

Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.

Definition at line 308 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_init_filters(), packed_16bpc_bswap(), planarCopyWrapper(), sws_init_context(), sws_scale(), and swscale().

◆ vChrDrop

int SwsContext::vChrDrop

Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.

Definition at line 309 of file swscale_internal.h.

Referenced by sws_init_context(), and swscale().

◆ sliceDir

int SwsContext::sliceDir

Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).

Definition at line 310 of file swscale_internal.h.

Referenced by sws_scale().

◆ param

double SwsContext::param[2]

Input parameters for scaling algorithms that need them.

Definition at line 311 of file swscale_internal.h.

Referenced by sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_setColorspaceDetails(), and usePal().

◆ cascaded_context

struct SwsContext* SwsContext::cascaded_context[3]

Definition at line 317 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), sws_scale(), and sws_setColorspaceDetails().

◆ cascaded_tmpStride

int SwsContext::cascaded_tmpStride[4]

Definition at line 318 of file swscale_internal.h.

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

◆ cascaded_tmp

uint8_t* SwsContext::cascaded_tmp[4]

Definition at line 319 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), sws_scale(), and sws_setColorspaceDetails().

◆ cascaded1_tmpStride

int SwsContext::cascaded1_tmpStride[4]

Definition at line 320 of file swscale_internal.h.

Referenced by sws_init_context(), and sws_scale().

◆ cascaded1_tmp

uint8_t* SwsContext::cascaded1_tmp[4]

Definition at line 321 of file swscale_internal.h.

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

◆ cascaded_mainindex

int SwsContext::cascaded_mainindex

Definition at line 322 of file swscale_internal.h.

Referenced by sws_init_context(), and sws_setColorspaceDetails().

◆ gamma_value

double SwsContext::gamma_value

Definition at line 324 of file swscale_internal.h.

Referenced by sws_init_context().

◆ gamma_flag

int SwsContext::gamma_flag

Definition at line 325 of file swscale_internal.h.

Referenced by sws_init_context(), and sws_scale().

◆ is_internal_gamma

int SwsContext::is_internal_gamma

Definition at line 326 of file swscale_internal.h.

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

◆ gamma

uint16_t* SwsContext::gamma

Definition at line 327 of file swscale_internal.h.

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

◆ inv_gamma

uint16_t* SwsContext::inv_gamma

Definition at line 328 of file swscale_internal.h.

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

◆ numDesc

int SwsContext::numDesc

Definition at line 330 of file swscale_internal.h.

Referenced by ff_free_filters(), ff_init_filters(), ff_init_vscale_pfn(), and swscale().

◆ descIndex

int SwsContext::descIndex[2]

Definition at line 331 of file swscale_internal.h.

Referenced by ff_init_filters(), and swscale().

◆ numSlice

int SwsContext::numSlice

Definition at line 332 of file swscale_internal.h.

Referenced by ff_free_filters(), ff_init_filters(), and swscale().

◆ slice

struct SwsSlice* SwsContext::slice

Definition at line 333 of file swscale_internal.h.

Referenced by ff_free_filters(), ff_init_filters(), and swscale().

◆ desc

struct SwsFilterDescriptor* SwsContext::desc

Definition at line 334 of file swscale_internal.h.

Referenced by ff_free_filters(), ff_init_filters(), ff_init_vscale_pfn(), is16BPS(), isALPHA(), isAnyRGB(), isBayer(), isBE(), isGray(), isNBPS(), isPacked(), isPackedRGB(), isPlanar(), isPlanarRGB(), isPlanarYUV(), isRGB(), isSemiPlanarYUV(), isYUV(), and swscale().

◆ pal_yuv

uint32_t SwsContext::pal_yuv[256]

Definition at line 336 of file swscale_internal.h.

Referenced by ff_init_filters(), and sws_scale().

◆ pal_rgb

uint32_t SwsContext::pal_rgb[256]

Definition at line 337 of file swscale_internal.h.

Referenced by palToRgbWrapper(), and sws_scale().

◆ lastInLumBuf

int SwsContext::lastInLumBuf

Last scaled horizontal luma/alpha line from source in the ring buffer.

Definition at line 349 of file swscale_internal.h.

Referenced by swscale().

◆ lastInChrBuf

int SwsContext::lastInChrBuf

Last scaled horizontal chroma line from source in the ring buffer.

Definition at line 350 of file swscale_internal.h.

Referenced by swscale().

◆ lumBufIndex

int SwsContext::lumBufIndex

Index in ring buffer of the last scaled horizontal luma/alpha line from source.

Definition at line 351 of file swscale_internal.h.

Referenced by swscale().

◆ chrBufIndex

int SwsContext::chrBufIndex

Index in ring buffer of the last scaled horizontal chroma line from source.

Definition at line 352 of file swscale_internal.h.

Referenced by swscale().

◆ formatConvBuffer

uint8_t* SwsContext::formatConvBuffer

Definition at line 355 of file swscale_internal.h.

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

◆ needAlpha

int SwsContext::needAlpha

Definition at line 356 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_init_vscale(), ff_sws_init_output_funcs(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), sws_init_context(), and swscale().

◆ hLumFilter

int16_t* SwsContext::hLumFilter

Array of horizontal filter coefficients for luma/alpha planes.

Definition at line 372 of file swscale_internal.h.

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

◆ hChrFilter

int16_t* SwsContext::hChrFilter

Array of horizontal filter coefficients for chroma planes.

Definition at line 373 of file swscale_internal.h.

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

◆ vLumFilter

int16_t* SwsContext::vLumFilter

Array of vertical filter coefficients for luma/alpha planes.

Definition at line 374 of file swscale_internal.h.

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

◆ vChrFilter

int16_t* SwsContext::vChrFilter

Array of vertical filter coefficients for chroma planes.

Definition at line 375 of file swscale_internal.h.

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

◆ hLumFilterPos

int32_t* SwsContext::hLumFilterPos

Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.

Definition at line 376 of file swscale_internal.h.

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

◆ hChrFilterPos

int32_t* SwsContext::hChrFilterPos

Array of horizontal filter starting positions for each dst[i] for chroma planes.

Definition at line 377 of file swscale_internal.h.

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

◆ vLumFilterPos

int32_t* SwsContext::vLumFilterPos

Array of vertical filter starting positions for each dst[i] for luma/alpha planes.

Definition at line 378 of file swscale_internal.h.

Referenced by ff_init_vscale_pfn(), get_min_buffer_size(), sws_freeContext(), sws_init_context(), and swscale().

◆ vChrFilterPos

int32_t* SwsContext::vChrFilterPos

Array of vertical filter starting positions for each dst[i] for chroma planes.

Definition at line 379 of file swscale_internal.h.

Referenced by ff_init_vscale_pfn(), get_min_buffer_size(), sws_freeContext(), sws_init_context(), and swscale().

◆ hLumFilterSize

int SwsContext::hLumFilterSize

Horizontal filter size for luma/alpha pixels.

Definition at line 380 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_sws_init_swscale_x86(), and sws_init_context().

◆ hChrFilterSize

int SwsContext::hChrFilterSize

Horizontal filter size for chroma pixels.

Definition at line 381 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_sws_init_swscale_x86(), and sws_init_context().

◆ vLumFilterSize

int SwsContext::vLumFilterSize

Vertical filter size for luma/alpha pixels.

Definition at line 382 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_init_vscale_pfn(), get_min_buffer_size(), sws_init_context(), and swscale().

◆ vChrFilterSize

int SwsContext::vChrFilterSize

Vertical filter size for chroma pixels.

Definition at line 383 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_init_vscale_pfn(), get_min_buffer_size(), sws_init_context(), and swscale().

◆ lumMmxextFilterCodeSize

int SwsContext::lumMmxextFilterCodeSize

Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.

Definition at line 386 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

◆ chrMmxextFilterCodeSize

int SwsContext::chrMmxextFilterCodeSize

Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.

Definition at line 387 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

◆ lumMmxextFilterCode

uint8_t* SwsContext::lumMmxextFilterCode

Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.

Definition at line 388 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

◆ chrMmxextFilterCode

uint8_t* SwsContext::chrMmxextFilterCode

Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.

Definition at line 389 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

◆ canMMXEXTBeUsed

int SwsContext::canMMXEXTBeUsed

Definition at line 391 of file swscale_internal.h.

Referenced by sws_init_context().

◆ warned_unuseable_bilinear

int SwsContext::warned_unuseable_bilinear

Definition at line 392 of file swscale_internal.h.

Referenced by packed_vscale().

◆ dstY

int SwsContext::dstY

Last destination vertical line output from last slice.

Definition at line 394 of file swscale_internal.h.

Referenced by bayer_to_yv12_wrapper(), planar8ToP01xleWrapper(), planarToP01xWrapper(), sws_scale(), swscale(), yv12_copy(), and yv12_interpolate().

◆ flags

int SwsContext::flags

Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...

Definition at line 395 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_get_unscaled_swscale_ppc(), ff_sws_init_output_funcs(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), findRgbConvFn(), get_unscaled_swscale_neon(), sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_init_swscale(), sws_scale(), sws_setColorspaceDetails(), swscale(), and usePal().

◆ yuvTable

void* SwsContext::yuvTable

Definition at line 396 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), and sws_freeContext().

◆ table_gV

int SwsContext::table_gV[256+2 *YUVRGB_TABLE_HEADROOM]

Definition at line 399 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

◆ table_rV

uint8_t* SwsContext::table_rV[256+2 *YUVRGB_TABLE_HEADROOM]

Definition at line 400 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

◆ table_gU

uint8_t* SwsContext::table_gU[256+2 *YUVRGB_TABLE_HEADROOM]

Definition at line 401 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

◆ table_bU

uint8_t* SwsContext::table_bU[256+2 *YUVRGB_TABLE_HEADROOM]

Definition at line 402 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

◆ input_rgb2yuv_table

int32_t SwsContext::input_rgb2yuv_table[16+40 *4]

Definition at line 403 of file swscale_internal.h.

Referenced by bayer_to_yv12_wrapper(), bgr24ToYv12Wrapper(), chr_convert(), ff_init_filters(), fill_rgb2yuv_table(), and lum_convert().

◆ dither_error

int* SwsContext::dither_error[4]

Definition at line 415 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), sws_scale(), yuv2mono_1_c_template(), yuv2mono_2_c_template(), yuv2mono_X_c_template(), yuv2rgb_full_1_c_template(), yuv2rgb_full_2_c_template(), and yuv2rgb_full_X_c_template().

◆ contrast

int SwsContext::contrast

Definition at line 418 of file swscale_internal.h.

Referenced by filter_frame(), sws_getColorspaceDetails(), sws_init_context(), and sws_setColorspaceDetails().

◆ brightness

int SwsContext::brightness

Definition at line 418 of file swscale_internal.h.

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

◆ saturation

int SwsContext::saturation

Definition at line 418 of file swscale_internal.h.

Referenced by filter_frame(), sws_getColorspaceDetails(), sws_init_context(), and sws_setColorspaceDetails().

◆ srcColorspaceTable

int SwsContext::srcColorspaceTable[4]

Definition at line 419 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

◆ dstColorspaceTable

int SwsContext::dstColorspaceTable[4]

Definition at line 420 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

◆ srcRange

int SwsContext::srcRange

0 = MPG YUV range, 1 = JPG YUV range (source image).

Definition at line 421 of file swscale_internal.h.

Referenced by ff_sws_init_range_convert(), planarCopyWrapper(), sws_getColorspaceDetails(), sws_init_context(), and sws_setColorspaceDetails().

◆ dstRange

int SwsContext::dstRange

0 = MPG YUV range, 1 = JPG YUV range (destination image).

Definition at line 422 of file swscale_internal.h.

Referenced by ff_sws_init_range_convert(), sws_getColorspaceDetails(), sws_init_context(), and sws_setColorspaceDetails().

◆ src0Alpha

int SwsContext::src0Alpha

Definition at line 423 of file swscale_internal.h.

Referenced by handle_formats(), sws_init_context(), and sws_scale().

◆ dst0Alpha

int SwsContext::dst0Alpha

Definition at line 424 of file swscale_internal.h.

Referenced by handle_formats(), and sws_scale().

◆ srcXYZ

int SwsContext::srcXYZ

Definition at line 425 of file swscale_internal.h.

Referenced by handle_formats(), and sws_scale().

◆ dstXYZ

int SwsContext::dstXYZ

Definition at line 426 of file swscale_internal.h.

Referenced by handle_formats(), and sws_scale().

◆ src_h_chr_pos

int SwsContext::src_h_chr_pos

Definition at line 427 of file swscale_internal.h.

Referenced by sws_getCachedContext(), and sws_init_context().

◆ dst_h_chr_pos

int SwsContext::dst_h_chr_pos

Definition at line 428 of file swscale_internal.h.

Referenced by sws_getCachedContext(), and sws_init_context().

◆ src_v_chr_pos

int SwsContext::src_v_chr_pos

Definition at line 429 of file swscale_internal.h.

Referenced by sws_getCachedContext(), and sws_init_context().

◆ dst_v_chr_pos

int SwsContext::dst_v_chr_pos

Definition at line 430 of file swscale_internal.h.

Referenced by sws_getCachedContext(), and sws_init_context().

◆ yuv2rgb_y_offset

int SwsContext::yuv2rgb_y_offset

Definition at line 431 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2rgba64_1_c_template(), yuv2rgba64_2_c_template(), yuv2rgba64_full_1_c_template(), yuv2rgba64_full_2_c_template(), yuv2rgba64_full_X_c_template(), and yuv2rgba64_X_c_template().

◆ yuv2rgb_y_coeff

int SwsContext::yuv2rgb_y_coeff

Definition at line 432 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2rgba64_1_c_template(), yuv2rgba64_2_c_template(), yuv2rgba64_full_1_c_template(), yuv2rgba64_full_2_c_template(), yuv2rgba64_full_X_c_template(), and yuv2rgba64_X_c_template().

◆ yuv2rgb_v2r_coeff

int SwsContext::yuv2rgb_v2r_coeff

Definition at line 433 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2rgba64_1_c_template(), yuv2rgba64_2_c_template(), yuv2rgba64_full_1_c_template(), yuv2rgba64_full_2_c_template(), yuv2rgba64_full_X_c_template(), and yuv2rgba64_X_c_template().

◆ yuv2rgb_v2g_coeff

int SwsContext::yuv2rgb_v2g_coeff

Definition at line 434 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2rgba64_1_c_template(), yuv2rgba64_2_c_template(), yuv2rgba64_full_1_c_template(), yuv2rgba64_full_2_c_template(), yuv2rgba64_full_X_c_template(), and yuv2rgba64_X_c_template().

◆ yuv2rgb_u2g_coeff

int SwsContext::yuv2rgb_u2g_coeff

Definition at line 435 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2rgba64_1_c_template(), yuv2rgba64_2_c_template(), yuv2rgba64_full_1_c_template(), yuv2rgba64_full_2_c_template(), yuv2rgba64_full_X_c_template(), and yuv2rgba64_X_c_template().

◆ yuv2rgb_u2b_coeff

int SwsContext::yuv2rgb_u2b_coeff

Definition at line 436 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2gbrp16_full_X_c(), yuv2gbrp_full_X_c(), yuv2rgba64_1_c_template(), yuv2rgba64_2_c_template(), yuv2rgba64_full_1_c_template(), yuv2rgba64_full_2_c_template(), yuv2rgba64_full_X_c_template(), and yuv2rgba64_X_c_template().

◆ redDither

uint64_t SwsContext::redDither

Definition at line 464 of file swscale_internal.h.

◆ greenDither

uint64_t SwsContext::greenDither

Definition at line 465 of file swscale_internal.h.

◆ blueDither

uint64_t SwsContext::blueDither

Definition at line 466 of file swscale_internal.h.

◆ yCoeff

uint64_t SwsContext::yCoeff

Definition at line 468 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ vrCoeff

uint64_t SwsContext::vrCoeff

Definition at line 469 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ ubCoeff

uint64_t SwsContext::ubCoeff

Definition at line 470 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ vgCoeff

uint64_t SwsContext::vgCoeff

Definition at line 471 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ ugCoeff

uint64_t SwsContext::ugCoeff

Definition at line 472 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ yOffset

uint64_t SwsContext::yOffset

Definition at line 473 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ uOffset

uint64_t SwsContext::uOffset

Definition at line 474 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ vOffset

uint64_t SwsContext::vOffset

Definition at line 475 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

◆ lumMmxFilter

int32_t SwsContext::lumMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 476 of file swscale_internal.h.

Referenced by ff_init_vscale_pfn(), and packed_vscale().

◆ chrMmxFilter

int32_t SwsContext::chrMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 477 of file swscale_internal.h.

Referenced by ff_init_vscale_pfn(), and packed_vscale().

◆ dstW

int SwsContext::dstW

Width of destination luma/alpha planes.

Definition at line 478 of file swscale_internal.h.

Referenced by ff_init_filters(), selfTest(), sws_alloc_set_opts(), sws_getCachedContext(), sws_init_context(), sws_scale(), sws_setColorspaceDetails(), swscale(), and usePal().

◆ esp

uint64_t SwsContext::esp

Definition at line 479 of file swscale_internal.h.

◆ vRounder

uint64_t SwsContext::vRounder

Definition at line 480 of file swscale_internal.h.

Referenced by sws_init_context().

◆ u_temp

uint64_t SwsContext::u_temp

Definition at line 481 of file swscale_internal.h.

◆ v_temp

uint64_t SwsContext::v_temp

Definition at line 482 of file swscale_internal.h.

◆ y_temp

uint64_t SwsContext::y_temp

Definition at line 483 of file swscale_internal.h.

◆ alpMmxFilter

int32_t SwsContext::alpMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 484 of file swscale_internal.h.

Referenced by ff_init_vscale_pfn().

◆ uv_off

ptrdiff_t SwsContext::uv_off

offset (in pixels) between u and v planes

Definition at line 488 of file swscale_internal.h.

Referenced by sws_init_context().

◆ uv_offx2

ptrdiff_t SwsContext::uv_offx2

offset (in bytes) between u and v planes

Definition at line 489 of file swscale_internal.h.

Referenced by chr_planar_vscale(), and sws_init_context().

◆ dither16

uint16_t SwsContext::dither16[8]

Definition at line 490 of file swscale_internal.h.

◆ dither32

uint32_t SwsContext::dither32[8]

Definition at line 491 of file swscale_internal.h.

◆ chrDither8

const uint8_t* SwsContext::chrDither8

Definition at line 493 of file swscale_internal.h.

Referenced by chr_planar_vscale(), swscale(), and yuv2nv12cX_c().

◆ lumDither8

const uint8_t * SwsContext::lumDither8

Definition at line 493 of file swscale_internal.h.

Referenced by lum_planar_vscale(), and swscale().

◆ use_mmx_vfilter

int SwsContext::use_mmx_vfilter

Definition at line 506 of file swscale_internal.h.

Referenced by ff_init_vscale(), ff_sws_init_swscale_x86(), and swscale().

◆ xyzgamma

int16_t* SwsContext::xyzgamma

Definition at line 511 of file swscale_internal.h.

Referenced by fill_xyztables(), and xyz12Torgb48().

◆ rgbgamma

int16_t* SwsContext::rgbgamma

Definition at line 512 of file swscale_internal.h.

Referenced by fill_xyztables(), and xyz12Torgb48().

◆ xyzgammainv

int16_t* SwsContext::xyzgammainv

Definition at line 513 of file swscale_internal.h.

Referenced by fill_xyztables(), and rgb48Toxyz12().

◆ rgbgammainv

int16_t* SwsContext::rgbgammainv

Definition at line 514 of file swscale_internal.h.

Referenced by fill_xyztables(), and rgb48Toxyz12().

◆ xyz2rgb_matrix

int16_t SwsContext::xyz2rgb_matrix[3][4]

Definition at line 515 of file swscale_internal.h.

Referenced by fill_xyztables(), and xyz12Torgb48().

◆ rgb2xyz_matrix

int16_t SwsContext::rgb2xyz_matrix[3][4]

Definition at line 516 of file swscale_internal.h.

Referenced by fill_xyztables(), and rgb48Toxyz12().

◆ yuv2plane1

yuv2planar1_fn SwsContext::yuv2plane1

Definition at line 519 of file swscale_internal.h.

Referenced by ff_init_vscale(), ff_sws_init_swscale_x86(), sws_init_swscale(), swscale(), and usePal().

◆ yuv2planeX

yuv2planarX_fn SwsContext::yuv2planeX

Definition at line 520 of file swscale_internal.h.

Referenced by ff_init_vscale(), ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), sws_init_swscale(), swscale(), and usePal().

◆ yuv2nv12cX

yuv2interleavedX_fn SwsContext::yuv2nv12cX

Definition at line 521 of file swscale_internal.h.

Referenced by chr_planar_vscale(), ff_init_vscale(), sws_init_swscale(), swscale(), and usePal().

◆ yuv2packed1

yuv2packed1_fn SwsContext::yuv2packed1

Definition at line 522 of file swscale_internal.h.

Referenced by any_vscale(), ff_init_vscale(), ff_init_vscale_pfn(), packed_vscale(), sws_init_swscale(), swscale(), and usePal().

◆ yuv2packed2

yuv2packed2_fn SwsContext::yuv2packed2

Definition at line 523 of file swscale_internal.h.

Referenced by any_vscale(), ff_init_vscale(), ff_init_vscale_pfn(), packed_vscale(), sws_init_swscale(), swscale(), and usePal().

◆ yuv2packedX

yuv2packedX_fn SwsContext::yuv2packedX

Definition at line 524 of file swscale_internal.h.

Referenced by ff_init_vscale(), ff_sws_init_swscale_ppc(), sws_init_swscale(), swscale(), and usePal().

◆ yuv2anyX

yuv2anyX_fn SwsContext::yuv2anyX

Definition at line 525 of file swscale_internal.h.

Referenced by ff_init_vscale(), sws_init_swscale(), swscale(), and usePal().

◆ lumToYV12

void(* SwsContext::lumToYV12) (uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3, int width, uint32_t *pal)

Unscaled conversion of luma plane to YV12 for horizontal scaler.

Definition at line 528 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_sws_init_swscale_x86(), and lum_convert().

◆ alpToYV12

void(* SwsContext::alpToYV12) (uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3, int width, uint32_t *pal)

Unscaled conversion of alpha plane to YV12 for horizontal scaler.

Definition at line 531 of file swscale_internal.h.

Referenced by ff_init_filters(), ff_sws_init_swscale_x86(), and lum_convert().

◆ chrToYV12

void(* SwsContext::chrToYV12) (uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, const uint8_t *src3, int width, uint32_t *pal)

Unscaled conversion of chroma planes to YV12 for horizontal scaler.

Definition at line 534 of file swscale_internal.h.

Referenced by chr_convert(), ff_init_filters(), and ff_sws_init_swscale_x86().

◆ readLumPlanar

void(* SwsContext::readLumPlanar) (uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv)

Functions to read planar input, such as planar RGB, and convert internally to Y/UV/A.

Definition at line 543 of file swscale_internal.h.

Referenced by ff_init_filters(), and lum_convert().

◆ readChrPlanar

void(* SwsContext::readChrPlanar) (uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width, int32_t *rgb2yuv)

Definition at line 544 of file swscale_internal.h.

Referenced by chr_convert(), and ff_init_filters().

◆ readAlpPlanar

void(* SwsContext::readAlpPlanar) (uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv)

Definition at line 546 of file swscale_internal.h.

Referenced by ff_init_filters(), and lum_convert().

◆ hyscale_fast

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

Scale one horizontal line of input data using a bilinear filter to produce one line of output data.

Compared to SwsContext->hScale(), please take note of the following caveats when using these:

Scaling is done using only 7 bits instead of 14-bit coefficients.
You can use no more than 5 input pixels to produce 4 output pixels. Therefore, this filter should not be used for downscaling by more than ~20% in width (because that equals more than 5/4th downscaling and thus more than 5 pixels input per 4 pixels output).
In general, bilinear filters create artifacts during downscaling (even when <20%), because one output pixel will span more than one input pixel, and thus some pixels will need edges of both neighbor pixels to interpolate the output pixel. Since you can use at most two input pixels per output pixel in bilinear scaling, this is impossible and thus downscaling by any size will create artifacts. To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR in SwsContext->flags.

Definition at line 568 of file swscale_internal.h.

Referenced by lum_h_scale(), and sws_init_swscale().

◆ hcscale_fast

void(* SwsContext::hcscale_fast) (struct 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 571 of file swscale_internal.h.

Referenced by chr_h_scale(), and sws_init_swscale().

◆ hyScale

void(* SwsContext::hyScale) (struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)

Scale one horizontal line of input data using a filter over the input lines, to produce one (differently sized) line of output data.

Parameters

dst	pointer to destination buffer for horizontally scaled data. If the number of bits per component of one destination pixel (SwsContext->dstBpc) is <= 10, data will be 15 bpc in 16 bits (int16_t) width. Else (i.e. SwsContext->dstBpc == 16), data will be 19bpc in 32 bits (int32_t) width.
dstW	width of destination image
src	pointer to source data to be scaled. If the number of bits per component of a source pixel (SwsContext->srcBpc) is 8, this is 8bpc in 8 bits (uint8_t) width. Else (i.e. SwsContext->dstBpc > 8), this is native depth in 16 bits (uint16_t) width. In other words, for 9-bit YUV input, this is 9bpc, for 10-bit YUV input, this is 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
filter	filter coefficients to be used per output pixel for scaling. This contains 14bpp filtering coefficients. Guaranteed to contain dstW * filterSize entries.
filterPos	position of the first input pixel to be used for each output pixel during scaling. Guaranteed to contain dstW entries.
filterSize	the number of input coefficients to be used (and thus the number of input pixels to be used) for creating a single output pixel. Is aligned to 4 (and input coefficients thus padded with zeroes) to simplify creating SIMD code.

Definition at line 608 of file swscale_internal.h.

Referenced by ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), lum_h_scale(), and sws_init_swscale().

◆ hcScale

void(* SwsContext::hcScale) (struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)

Definition at line 611 of file swscale_internal.h.

Referenced by chr_h_scale(), ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), and sws_init_swscale().

◆ lumConvertRange

void(* SwsContext::lumConvertRange) (int16_t *dst, int width)

Color range conversion function for luma plane if needed.

Definition at line 617 of file swscale_internal.h.

Referenced by ff_sws_init_range_convert(), and lum_h_scale().

◆ chrConvertRange

void(* SwsContext::chrConvertRange) (int16_t *dst1, int16_t *dst2, int width)

Color range conversion function for chroma planes if needed.

Definition at line 619 of file swscale_internal.h.

Referenced by chr_h_scale(), and ff_sws_init_range_convert().

◆ needs_hcscale

int SwsContext::needs_hcscale

Set if there are chroma planes to be converted.

Definition at line 621 of file swscale_internal.h.

Referenced by ff_init_filters(), and sws_init_swscale().

◆ dither

SwsDither SwsContext::dither

Definition at line 623 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), sws_init_context(), sws_scale(), yuv2mono_1_c_template(), yuv2mono_2_c_template(), and yuv2mono_X_c_template().

◆ alphablend

SwsAlphaBlend SwsContext::alphablend

Definition at line 625 of file swscale_internal.h.

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

The documentation for this struct was generated from the following file:

libswscale/swscale_internal.h

Data Fields

Detailed Description

Field Documentation

◆ av_class

◆ swscale

◆ srcW

◆ srcH

◆ dstH

◆ chrSrcW

◆ chrSrcH

◆ chrDstW

◆ chrDstH

◆ lumXInc

◆ chrXInc

◆ lumYInc

◆ chrYInc

◆ dstFormat

◆ srcFormat

◆ dstFormatBpp

◆ srcFormatBpp

◆ dstBpc

◆ srcBpc

◆ chrSrcHSubSample

◆ chrSrcVSubSample

◆ chrDstHSubSample

◆ chrDstVSubSample

◆ vChrDrop

◆ sliceDir

◆ param

◆ cascaded_context

◆ cascaded_tmpStride

◆ cascaded_tmp

◆ cascaded1_tmpStride

◆ cascaded1_tmp

◆ cascaded_mainindex

◆ gamma_value

◆ gamma_flag

◆ is_internal_gamma

◆ gamma

◆ inv_gamma

◆ numDesc

◆ descIndex

◆ numSlice

◆ slice

◆ desc

◆ pal_yuv

◆ pal_rgb

◆ lastInLumBuf

◆ lastInChrBuf

◆ lumBufIndex

◆ chrBufIndex

◆ formatConvBuffer

◆ needAlpha

◆ hLumFilter

◆ hChrFilter

◆ vLumFilter

◆ vChrFilter

◆ hLumFilterPos

◆ hChrFilterPos

◆ vLumFilterPos

◆ vChrFilterPos

◆ hLumFilterSize

◆ hChrFilterSize

◆ vLumFilterSize

◆ vChrFilterSize

◆ lumMmxextFilterCodeSize

◆ chrMmxextFilterCodeSize

◆ lumMmxextFilterCode

◆ chrMmxextFilterCode

◆ canMMXEXTBeUsed

◆ warned_unuseable_bilinear

◆ dstY

◆ flags

◆ yuvTable

◆ table_gV

◆ table_rV

◆ table_gU

◆ table_bU

◆ input_rgb2yuv_table

◆ dither_error