SwsContext Struct Reference

#include <swscale_internal.h>

Data Fields

const AVClass * av_class

info on struct for av_log

SwsFunc swScale

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

int srcW

Width of source luma/alpha planes.

int srcH

Height of source luma/alpha planes.

int dstH

Height of destination luma/alpha planes.

int chrSrcW

Width of source chroma planes.

int chrSrcH

Height of source chroma planes.

int chrDstW

Width of destination chroma planes.

int chrDstH

Height of destination chroma planes.

int lumXInc

int chrXInc

int lumYInc

int chrYInc

enum PixelFormat dstFormat

Destination pixel format.

enum PixelFormat srcFormat

Source pixel format.

int dstFormatBpp

Number of bits per pixel of the destination pixel format.

int srcFormatBpp

Number of bits per pixel of the source pixel format.

int chrSrcHSubSample

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

int chrSrcVSubSample

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

int chrDstHSubSample

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

int chrDstVSubSample

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

int vChrDrop

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

int sliceDir

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

double param [2]

Input parameters for scaling algorithms that need them.

uint32_t pal_yuv [256]

uint32_t pal_rgb [256]

uint8_t * formatConvBuffer

int lumMmx2FilterCodeSize

Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.

int chrMmx2FilterCodeSize

Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.

uint8_t * lumMmx2FilterCode

Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.

uint8_t * chrMmx2FilterCode

Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.

int canMMX2BeUsed

int dstY

Last destination vertical line output from last slice.

int flags

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

void * yuvTable

uint8_t * table_rV [256]

uint8_t * table_gU [256]

int table_gV [256]

uint8_t * table_bU [256]

int contrast

int brightness

int saturation

int srcColorspaceTable [4]

int dstColorspaceTable [4]

int srcRange

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

int dstRange

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

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.

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

ptrdiff_t uv_offx2

offset (in bytes) between u and v planes

uint16_t dither16 [8]

uint32_t dither32 [8]

yuv2planar1_fn yuv2yuv1

yuv2planarX_fn yuv2yuvX

yuv2packed1_fn yuv2packed1

yuv2packed2_fn yuv2packed2

yuv2packedX_fn yuv2packedX

void(* lumToYV12 )(uint8_t *dst, const uint8_t *src, int width, uint32_t *pal)

Unscaled conversion of luma plane to YV12 for horizontal scaler.

void(* alpToYV12 )(uint8_t *dst, const uint8_t *src, int width, uint32_t *pal)

Unscaled conversion of alpha plane to YV12 for horizontal scaler.

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

Unscaled conversion of chroma planes to YV12 for horizontal scaler.

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

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(* hScale )(int16_t *dst, int dstW, const uint8_t *src, int srcW, int xInc, const int16_t *filter, const int16_t *filterPos, int filterSize)

void(* hScale16 )(int16_t *dst, int dstW, const uint16_t *src, int srcW, int xInc, const int16_t *filter, const int16_t *filterPos, long filterSize, int shift)

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

Color range conversion function for luma plane if needed.

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

Color range conversion function for chroma planes if needed.

int needs_hcscale

Set if there are chroma planes to be converted.

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.

int16_t ** lumPixBuf

Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.

int16_t ** chrUPixBuf

Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.

int16_t ** chrVPixBuf

Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.

int16_t ** alpPixBuf

Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.

int vLumBufSize

Number of vertical luma/alpha lines allocated in the ring buffer.

int vChrBufSize

Number of vertical chroma lines allocated in the ring buffer.

int lastInLumBuf

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

int lastInChrBuf

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

int lumBufIndex

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

int chrBufIndex

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

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.

int16_t * hChrFilter

Array of horizontal filter coefficients for chroma planes.

int16_t * vLumFilter

Array of vertical filter coefficients for luma/alpha planes.

int16_t * vChrFilter

Array of vertical filter coefficients for chroma planes.

int16_t * hLumFilterPos

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

int16_t * hChrFilterPos

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

int16_t * vLumFilterPos

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

int16_t * vChrFilterPos

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

int hLumFilterSize

Horizontal filter size for luma/alpha pixels.

int hChrFilterSize

Horizontal filter size for chroma pixels.

int vLumFilterSize

Vertical filter size for luma/alpha pixels.

int vChrFilterSize

Vertical filter size for chroma pixels.

Detailed Description

Definition at line 98 of file swscale_internal.h.

Field Documentation

int32_t SwsContext::alpMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 258 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), swScale(), and swScale_c().

int16_t** SwsContext::alpPixBuf

Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.

Definition at line 146 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), ff_sws_init_swScale_altivec(), sws_freeContext(), sws_init_context(), sws_init_swScale_c(), swScale(), swScale_c(), and yuv2rgbX_c_full().

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

Unscaled conversion of alpha plane to YV12 for horizontal scaler.

Referenced by hyscale(), and sws_init_swScale_c().

const AVClass* SwsContext::av_class

info on struct for av_log

Definition at line 102 of file swscale_internal.h.

Referenced by sws_alloc_context().

uint64_t SwsContext::blueDither

Definition at line 240 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST().

int SwsContext::brightness

Definition at line 201 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

int SwsContext::canMMX2BeUsed

Definition at line 190 of file swscale_internal.h.

Referenced by sws_init_context().

int SwsContext::chrBufIndex

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

Definition at line 152 of file swscale_internal.h.

Referenced by swScale(), and swScale_c().

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

Color range conversion function for chroma planes if needed.

Referenced by hcscale(), and sws_init_swScale_c().

int SwsContext::chrDstH

Height of destination chroma planes.

Definition at line 115 of file swscale_internal.h.

Referenced by sws_init_context().

int SwsContext::chrDstHSubSample

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

Definition at line 124 of file swscale_internal.h.

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

int SwsContext::chrDstVSubSample

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

Definition at line 125 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), ff_get_unscaled_swscale(), planarCopyWrapper(), sws_init_context(), sws_scale(), swScale(), and swScale_c().

int SwsContext::chrDstW

Width of destination chroma planes.

Definition at line 114 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), swScale_c(), yuv2yuv1_ar_TMPL(), yuv2yuv1_TMPL(), yuv2yuvX_ar_TMPL(), and yuv2yuvX_TMPL().

uint8_t* SwsContext::chrMmx2FilterCode

Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.

Definition at line 188 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

int SwsContext::chrMmx2FilterCodeSize

Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.

Definition at line 186 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

int32_t SwsContext::chrMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 251 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), swScale(), and swScale_c().

int SwsContext::chrSrcH

Height of source chroma planes.

Definition at line 113 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), and sws_init_context().

int SwsContext::chrSrcHSubSample

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

Definition at line 122 of file swscale_internal.h.

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

int SwsContext::chrSrcVSubSample

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

Definition at line 123 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), sws_init_context(), sws_scale(), swScale(), and swScale_c().

int SwsContext::chrSrcW

Width of source chroma planes.

Definition at line 112 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), swScale_c(), and yvu9ToYv12Wrapper().

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

Unscaled conversion of chroma planes to YV12 for horizontal scaler.

Referenced by hcscale(), and sws_init_swScale_c().

int16_t** SwsContext::chrUPixBuf

Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.

Definition at line 144 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int16_t** SwsContext::chrVPixBuf

Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.

Definition at line 145 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int SwsContext::chrXInc

Definition at line 116 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), and swScale_c().

int SwsContext::chrYInc

Definition at line 117 of file swscale_internal.h.

Referenced by sws_init_context().

int SwsContext::contrast

Definition at line 201 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

uint16_t SwsContext::dither16[8]

Definition at line 261 of file swscale_internal.h.

uint32_t SwsContext::dither32[8]

Definition at line 262 of file swscale_internal.h.

int SwsContext::dstColorspaceTable[4]

Definition at line 203 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

enum PixelFormat SwsContext::dstFormat

int SwsContext::dstFormatBpp

Number of bits per pixel of the destination pixel format.

Definition at line 120 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), ff_yuv2rgb_c_init_tables(), rgbToRgbWrapper(), sws_init_context(), sws_setColorspaceDetails(), and yuv2rgbX_c_full().

int SwsContext::dstH

Height of destination luma/alpha planes.

Definition at line 111 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), ff_get_unscaled_swscale(), selfTest(), sws_getCachedContext(), sws_getContext(), sws_init_context(), sws_scale(), swScale(), and swScale_c().

int SwsContext::dstRange

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

Definition at line 205 of file swscale_internal.h.

Referenced by sws_getCachedContext(), sws_getColorspaceDetails(), sws_getContext(), sws_init_context(), sws_init_swScale_c(), and sws_setColorspaceDetails().

int SwsContext::dstW

Width of destination luma/alpha planes.

Definition at line 252 of file swscale_internal.h.

Referenced by ff_yuv2rgb_init_vis(), mlib_YUV2ABGR420_32(), mlib_YUV2ARGB420_32(), mlib_YUV2RGB420_24(), selfTest(), sws_getCachedContext(), sws_getContext(), sws_init_context(), swScale(), swScale_c(), vis_420P_ARGB32(), vis_422P_ARGB32(), yuv2bgr24_X_ar_TMPL(), yuv2bgr24_X_TMPL(), yuv2rgb32_X_ar_TMPL(), yuv2rgb32_X_TMPL(), yuv2rgb555_X_ar_TMPL(), yuv2rgb555_X_TMPL(), yuv2rgb565_X_ar_TMPL(), yuv2rgb565_X_TMPL(), yuv2yuv1_ar_TMPL(), yuv2yuv1_TMPL(), yuv2yuvX_ar_TMPL(), yuv2yuvX_TMPL(), yuv2yuyv422_X_ar_TMPL(), and yuv2yuyv422_X_TMPL().

int SwsContext::dstY

Last destination vertical line output from last slice.

Definition at line 192 of file swscale_internal.h.

Referenced by swScale(), and swScale_c().

uint64_t SwsContext::esp

Definition at line 253 of file swscale_internal.h.

int SwsContext::flags

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

Definition at line 193 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), ff_get_unscaled_swscale(), ff_sws_init_swScale_altivec(), ff_swscale_get_unscaled_altivec(), find_c_packed_planar_out_funcs(), sws_getCachedContext(), sws_getContext(), sws_init_context(), sws_init_swScale_c(), swScale(), and swScale_c().

uint8_t* SwsContext::formatConvBuffer

Definition at line 155 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

uint64_t SwsContext::greenDither

Definition at line 239 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST().

int16_t* SwsContext::hChrFilter

Array of horizontal filter coefficients for chroma planes.

Definition at line 172 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int16_t* SwsContext::hChrFilterPos

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

Definition at line 176 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int SwsContext::hChrFilterSize

Horizontal filter size for chroma pixels.

Definition at line 180 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), and swScale_c().

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)

Referenced by hcscale(), and sws_init_swScale_c().

int16_t* SwsContext::hLumFilter

Array of horizontal filter coefficients for luma/alpha planes.

Definition at line 171 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int16_t* SwsContext::hLumFilterPos

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

Definition at line 175 of file swscale_internal.h.

Referenced by sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int SwsContext::hLumFilterSize

Horizontal filter size for luma/alpha pixels.

Definition at line 179 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), and swScale_c().

void(* SwsContext::hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW, int xInc, const int16_t *filter, const int16_t *filterPos, int filterSize)

Referenced by ff_sws_init_swScale_altivec(), hcscale(), hyscale(), and sws_init_swScale_c().

void(* SwsContext::hScale16)(int16_t *dst, int dstW, const uint16_t *src, int srcW, int xInc, const int16_t *filter, const int16_t *filterPos, long filterSize, int shift)

Referenced by hcscale(), hyscale(), and sws_init_swScale_c().

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

Referenced by hyscale(), and sws_init_swScale_c().

int SwsContext::lastInChrBuf

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

Definition at line 150 of file swscale_internal.h.

Referenced by swScale(), and swScale_c().

int SwsContext::lastInLumBuf

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

Definition at line 149 of file swscale_internal.h.

Referenced by swScale(), and swScale_c().

int SwsContext::lumBufIndex

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

Definition at line 151 of file swscale_internal.h.

Referenced by swScale(), and swScale_c().

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

Color range conversion function for luma plane if needed.

Referenced by hyscale(), and sws_init_swScale_c().

uint8_t* SwsContext::lumMmx2FilterCode

Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.

Definition at line 187 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

int SwsContext::lumMmx2FilterCodeSize

Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.

Definition at line 185 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

int32_t SwsContext::lumMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 250 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), swScale(), and swScale_c().

int16_t** SwsContext::lumPixBuf

Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.

Definition at line 143 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

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

Unscaled conversion of luma plane to YV12 for horizontal scaler.

Referenced by hyscale(), and sws_init_swScale_c().

int SwsContext::lumXInc

Definition at line 116 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), and swScale_c().

int SwsContext::lumYInc

Definition at line 117 of file swscale_internal.h.

Referenced by sws_init_context().

int SwsContext::needs_hcscale

Set if there are chroma planes to be converted.

Definition at line 326 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), swScale(), and swScale_c().

uint32_t SwsContext::pal_rgb[256]

Definition at line 131 of file swscale_internal.h.

Referenced by palToRgbWrapper(), and sws_scale().

uint32_t SwsContext::pal_yuv[256]

Definition at line 130 of file swscale_internal.h.

Referenced by sws_scale(), swScale(), and swScale_c().

double SwsContext::param[2]

Input parameters for scaling algorithms that need them.

Definition at line 128 of file swscale_internal.h.

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

uint64_t SwsContext::redDither

Definition at line 238 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST().

int SwsContext::saturation

Definition at line 201 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

int SwsContext::sliceDir

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

Definition at line 127 of file swscale_internal.h.

Referenced by sws_scale().

int SwsContext::srcColorspaceTable[4]

Definition at line 202 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

int SwsContext::srcFormatBpp

Number of bits per pixel of the source pixel format.

Definition at line 121 of file swscale_internal.h.

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

int SwsContext::srcH

Height of source luma/alpha planes.

Definition at line 110 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), ff_yuv2rgb_init_altivec(), selfTest(), sws_getCachedContext(), sws_getContext(), sws_init_context(), and sws_scale().

int SwsContext::srcRange

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

Definition at line 204 of file swscale_internal.h.

Referenced by sws_getCachedContext(), sws_getColorspaceDetails(), sws_getContext(), sws_init_context(), sws_init_swScale_c(), and sws_setColorspaceDetails().

int SwsContext::srcW

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 108 of file swscale_internal.h.

Referenced by ff_bfin_get_unscaled_swscale(), ff_get_unscaled_swscale(), ff_swscale_get_unscaled_altivec(), sws_init_context(), and sws_scale().

uint8_t* SwsContext::table_bU[256]

Definition at line 198 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2rgb48_1_c_template(), yuv2rgb48_2_c_template(), and yuv2rgb48_X_c_template().

uint8_t* SwsContext::table_gU[256]

Definition at line 196 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2mono_1_c_template(), yuv2mono_2_c_template(), yuv2mono_X_c_template(), yuv2rgb48_1_c_template(), yuv2rgb48_2_c_template(), and yuv2rgb48_X_c_template().

int SwsContext::table_gV[256]

Definition at line 197 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2mono_1_c_template(), yuv2mono_2_c_template(), yuv2mono_X_c_template(), yuv2rgb48_1_c_template(), yuv2rgb48_2_c_template(), and yuv2rgb48_X_c_template().

uint8_t* SwsContext::table_rV[256]

Definition at line 195 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), yuv2rgb48_1_c_template(), yuv2rgb48_2_c_template(), and yuv2rgb48_X_c_template().

uint64_t SwsContext::u_temp

Definition at line 255 of file swscale_internal.h.

uint64_t SwsContext::ubCoeff

Definition at line 244 of file swscale_internal.h.

Referenced by bfin_prepare_coefficients(), ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

uint64_t SwsContext::ugCoeff

Definition at line 246 of file swscale_internal.h.

Referenced by bfin_prepare_coefficients(), ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

uint64_t SwsContext::uOffset

Definition at line 248 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

ptrdiff_t SwsContext::uv_off

offset (in pixels) between u and v planes

Definition at line 259 of file swscale_internal.h.

Referenced by sws_init_context(), yuv2bgr24_X_ar_TMPL(), yuv2bgr24_X_TMPL(), yuv2rgb32_X_ar_TMPL(), yuv2rgb32_X_TMPL(), yuv2rgb555_X_ar_TMPL(), yuv2rgb555_X_TMPL(), yuv2rgb565_X_ar_TMPL(), yuv2rgb565_X_TMPL(), yuv2yuvX_ar_TMPL(), yuv2yuvX_TMPL(), yuv2yuyv422_X_ar_TMPL(), and yuv2yuyv422_X_TMPL().

ptrdiff_t SwsContext::uv_offx2

offset (in bytes) between u and v planes

Definition at line 260 of file swscale_internal.h.

Referenced by sws_init_context().

uint64_t SwsContext::v_temp

Definition at line 256 of file swscale_internal.h.

int SwsContext::vChrBufSize

Number of vertical chroma lines allocated in the ring buffer.

Definition at line 148 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int SwsContext::vChrDrop

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

Definition at line 126 of file swscale_internal.h.

Referenced by sws_init_context(), swScale(), and swScale_c().

int16_t* SwsContext::vChrFilter

Array of vertical filter coefficients for chroma planes.

Definition at line 174 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int16_t* SwsContext::vChrFilterPos

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

Definition at line 178 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int SwsContext::vChrFilterSize

Vertical filter size for chroma pixels.

Definition at line 182 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_init_context(), swScale(), and swScale_c().

uint64_t SwsContext::vgCoeff

Definition at line 245 of file swscale_internal.h.

Referenced by bfin_prepare_coefficients(), ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

int SwsContext::vLumBufSize

Number of vertical luma/alpha lines allocated in the ring buffer.

Definition at line 147 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int16_t* SwsContext::vLumFilter

Array of vertical filter coefficients for luma/alpha planes.

Definition at line 173 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int16_t* SwsContext::vLumFilterPos

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

Definition at line 177 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_freeContext(), sws_init_context(), swScale(), and swScale_c().

int SwsContext::vLumFilterSize

Vertical filter size for luma/alpha pixels.

Definition at line 181 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), sws_init_context(), swScale(), and swScale_c().

uint64_t SwsContext::vOffset

Definition at line 249 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

uint64_t SwsContext::vrCoeff

Definition at line 243 of file swscale_internal.h.

Referenced by bfin_prepare_coefficients(), ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

uint64_t SwsContext::vRounder

Definition at line 254 of file swscale_internal.h.

Referenced by sws_init_context().

uint64_t SwsContext::y_temp

Definition at line 257 of file swscale_internal.h.

uint64_t SwsContext::yCoeff

Definition at line 242 of file swscale_internal.h.

Referenced by bfin_prepare_coefficients(), ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

uint64_t SwsContext::yOffset

Definition at line 247 of file swscale_internal.h.

Referenced by bfin_prepare_coefficients(), ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

yuv2packed1_fn SwsContext::yuv2packed1

Definition at line 296 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), swScale(), and swScale_c().

yuv2packed2_fn SwsContext::yuv2packed2

Definition at line 297 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), swScale(), and swScale_c().

yuv2packedX_fn SwsContext::yuv2packedX

Definition at line 298 of file swscale_internal.h.

Referenced by ff_sws_init_swScale_altivec(), sws_init_swScale_c(), swScale(), and swScale_c().

int SwsContext::yuv2rgb_u2b_coeff

Definition at line 211 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

int SwsContext::yuv2rgb_u2g_coeff

Definition at line 210 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

int SwsContext::yuv2rgb_v2g_coeff

Definition at line 209 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

int SwsContext::yuv2rgb_v2r_coeff

Definition at line 208 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

int SwsContext::yuv2rgb_y_coeff

Definition at line 207 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

int SwsContext::yuv2rgb_y_offset

Definition at line 206 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables().

yuv2planar1_fn SwsContext::yuv2yuv1

Definition at line 294 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), sws_init_swScale_TMPL(), swScale(), and swScale_c().

yuv2planarX_fn SwsContext::yuv2yuvX

Definition at line 295 of file swscale_internal.h.

Referenced by ff_sws_init_swScale_altivec(), sws_init_swScale_c(), sws_init_swScale_TMPL(), swScale(), and swScale_c().

void* SwsContext::yuvTable

Definition at line 194 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), and sws_freeContext().

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

libswscale/swscale_internal.h


Data Fields
const AVClass *	av_class
	info on struct for av_log
SwsFunc	swScale
	Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be freely modified here.
int	srcW
	Width of source luma/alpha planes.
int	srcH
	Height of source luma/alpha planes.
int	dstH
	Height of destination luma/alpha planes.
int	chrSrcW
	Width of source chroma planes.
int	chrSrcH
	Height of source chroma planes.
int	chrDstW
	Width of destination chroma planes.
int	chrDstH
	Height of destination chroma planes.
int	lumXInc
int	chrXInc
int	lumYInc
int	chrYInc
enum PixelFormat	dstFormat
	Destination pixel format.
enum PixelFormat	srcFormat
	Source pixel format.
int	dstFormatBpp
	Number of bits per pixel of the destination pixel format.
int	srcFormatBpp
	Number of bits per pixel of the source pixel format.
int	chrSrcHSubSample
	Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
int	chrSrcVSubSample
	Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
int	chrDstHSubSample
	Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
int	chrDstVSubSample
	Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
int	vChrDrop
	Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
int	sliceDir
	Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
double	param [2]
	Input parameters for scaling algorithms that need them.
uint32_t	pal_yuv [256]
uint32_t	pal_rgb [256]
uint8_t *	formatConvBuffer
int	lumMmx2FilterCodeSize
	Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
int	chrMmx2FilterCodeSize
	Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
uint8_t *	lumMmx2FilterCode
	Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
uint8_t *	chrMmx2FilterCode
	Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
int	canMMX2BeUsed
int	dstY
	Last destination vertical line output from last slice.
int	flags
	Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
void *	yuvTable
uint8_t *	table_rV [256]
uint8_t *	table_gU [256]
int	table_gV [256]
uint8_t *	table_bU [256]
int	contrast
int	brightness
int	saturation
int	srcColorspaceTable [4]
int	dstColorspaceTable [4]
int	srcRange
	0 = MPG YUV range, 1 = JPG YUV range (source image).
int	dstRange
	0 = MPG YUV range, 1 = JPG YUV range (destination image).
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.
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
ptrdiff_t	uv_offx2
	offset (in bytes) between u and v planes
uint16_t	dither16 [8]
uint32_t	dither32 [8]
yuv2planar1_fn	yuv2yuv1
yuv2planarX_fn	yuv2yuvX
yuv2packed1_fn	yuv2packed1
yuv2packed2_fn	yuv2packed2
yuv2packedX_fn	yuv2packedX
void(*	lumToYV12 )(uint8_t dst, const uint8_t src, int width, uint32_t *pal)
	Unscaled conversion of luma plane to YV12 for horizontal scaler.
void(*	alpToYV12 )(uint8_t dst, const uint8_t src, int width, uint32_t *pal)
	Unscaled conversion of alpha plane to YV12 for horizontal scaler.
void(*	chrToYV12 )(uint8_t dstU, uint8_t dstV, const uint8_t src1, const uint8_t src2, int width, uint32_t *pal)
	Unscaled conversion of chroma planes to YV12 for horizontal scaler.
void(*	hyscale_fast )(struct SwsContext c, int16_t dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
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(*	hScale )(int16_t dst, int dstW, const uint8_t src, int srcW, int xInc, const int16_t filter, const int16_t filterPos, int filterSize)
void(*	hScale16 )(int16_t dst, int dstW, const uint16_t src, int srcW, int xInc, const int16_t filter, const int16_t filterPos, long filterSize, int shift)
void(*	lumConvertRange )(int16_t *dst, int width)
	Color range conversion function for luma plane if needed.
void(*	chrConvertRange )(int16_t dst1, int16_t dst2, int width)
	Color range conversion function for chroma planes if needed.
int	needs_hcscale
	Set if there are chroma planes to be converted.
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.
int16_t **	lumPixBuf
	Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
int16_t **	chrUPixBuf
	Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
int16_t **	chrVPixBuf
	Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
int16_t **	alpPixBuf
	Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
int	vLumBufSize
	Number of vertical luma/alpha lines allocated in the ring buffer.
int	vChrBufSize
	Number of vertical chroma lines allocated in the ring buffer.
int	lastInLumBuf
	Last scaled horizontal luma/alpha line from source in the ring buffer.
int	lastInChrBuf
	Last scaled horizontal chroma line from source in the ring buffer.
int	lumBufIndex
	Index in ring buffer of the last scaled horizontal luma/alpha line from source.
int	chrBufIndex
	Index in ring buffer of the last scaled horizontal chroma line from source.
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.
int16_t *	hChrFilter
	Array of horizontal filter coefficients for chroma planes.
int16_t *	vLumFilter
	Array of vertical filter coefficients for luma/alpha planes.
int16_t *	vChrFilter
	Array of vertical filter coefficients for chroma planes.
int16_t *	hLumFilterPos
	Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
int16_t *	hChrFilterPos
	Array of horizontal filter starting positions for each dst[i] for chroma planes.
int16_t *	vLumFilterPos
	Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
int16_t *	vChrFilterPos
	Array of vertical filter starting positions for each dst[i] for chroma planes.
int	hLumFilterSize
	Horizontal filter size for luma/alpha pixels.
int	hChrFilterSize
	Horizontal filter size for chroma pixels.
int	vLumFilterSize
	Vertical filter size for luma/alpha pixels.
int	vChrFilterSize
	Vertical filter size for chroma pixels.