SwsContext Struct Reference

#include <swscale_internal.h>


Data Fields

const AVClassav_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 dstBpc
int srcBpc
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+2 *YUVRGB_TABLE_HEADROOM]
uint8_t * table_gU [256+2 *YUVRGB_TABLE_HEADROOM]
int table_gV [256+2 *YUVRGB_TABLE_HEADROOM]
uint8_t * table_bU [256+2 *YUVRGB_TABLE_HEADROOM]
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 src0Alpha
int dst0Alpha
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]
const uint8_t * chrDither8
const uint8_t * lumDither8
int use_mmx_vfilter
yuv2planar1_fn yuv2plane1
yuv2planarX_fn yuv2planeX
yuv2interleavedX_fn yuv2nv12cX
yuv2packed1_fn yuv2packed1
yuv2packed2_fn yuv2packed2
yuv2packedX_fn yuv2packedX
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.
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.
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.
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_thLumFilter
 Array of horizontal filter coefficients for luma/alpha planes.
int16_thChrFilter
 Array of horizontal filter coefficients for chroma planes.
int16_tvLumFilter
 Array of vertical filter coefficients for luma/alpha planes.
int16_tvChrFilter
 Array of vertical filter coefficients for chroma planes.
int32_t * hLumFilterPos
 Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
int32_t * hChrFilterPos
 Array of horizontal filter starting positions for each dst[i] for chroma planes.
int32_t * vLumFilterPos
 Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
int32_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.
void(* readLumPlanar )(uint8_t *dst, const uint8_t *src[4], int width)
 Functions to read planar input, such as planar RGB, and convert internally to Y/UV.
void(* readChrPlanar )(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width)
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.
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.
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

Definition at line 224 of file swscale_internal.h.


Field Documentation

int32_t SwsContext::alpMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 387 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), and swScale().

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

Definition at line 273 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), ff_sws_init_swScale_altivec(), ff_sws_init_swScale_mmx(), find_c_packed_planar_out_funcs(), sws_freeContext(), sws_init_context(), sws_init_swScale_c(), and swScale().

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.

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

info on struct for av_log

Definition at line 228 of file swscale_internal.h.

Referenced by sws_alloc_context().

Definition at line 369 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST().

Definition at line 328 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

Definition at line 317 of file swscale_internal.h.

Referenced by sws_init_context().

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

Definition at line 279 of file swscale_internal.h.

Referenced by swScale().

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().

const uint8_t* SwsContext::chrDither8

Definition at line 396 of file swscale_internal.h.

Referenced by swScale(), and yuv2nv12cX_c().

Height of destination chroma planes.

Definition at line 241 of file swscale_internal.h.

Referenced by sws_init_context().

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

Definition at line 251 of file swscale_internal.h.

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

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

Definition at line 252 of file swscale_internal.h.

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

Width of destination chroma planes.

Definition at line 240 of file swscale_internal.h.

Referenced by sws_init_context(), and swScale().

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

Definition at line 315 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

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

Definition at line 313 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

int32_t SwsContext::chrMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 380 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), and swScale().

Height of source chroma planes.

Definition at line 239 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), and sws_init_context().

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

Definition at line 249 of file swscale_internal.h.

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

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

Definition at line 250 of file swscale_internal.h.

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

Width of source chroma planes.

Definition at line 238 of file swscale_internal.h.

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

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.

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

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

Definition at line 271 of file swscale_internal.h.

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

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

Definition at line 272 of file swscale_internal.h.

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

Definition at line 242 of file swscale_internal.h.

Referenced by sws_init_context(), and swScale().

Definition at line 243 of file swscale_internal.h.

Referenced by sws_init_context().

Definition at line 328 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

uint16_t SwsContext::dither16[8]

Definition at line 393 of file swscale_internal.h.

uint32_t SwsContext::dither32[8]

Definition at line 394 of file swscale_internal.h.

Definition at line 334 of file swscale_internal.h.

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

Definition at line 330 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

Number of bits per pixel of the destination pixel format.

Definition at line 246 of file swscale_internal.h.

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

Height of destination luma/alpha planes.

Definition at line 237 of file swscale_internal.h.

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

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

Definition at line 332 of file swscale_internal.h.

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

Last destination vertical line output from last slice.

Definition at line 319 of file swscale_internal.h.

Referenced by swScale().

uint64_t SwsContext::esp

Definition at line 382 of file swscale_internal.h.

Definition at line 282 of file swscale_internal.h.

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

Definition at line 368 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST().

Array of horizontal filter coefficients for chroma planes.

Definition at line 299 of file swscale_internal.h.

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

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

Definition at line 303 of file swscale_internal.h.

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

Horizontal filter size for chroma pixels.

Definition at line 307 of file swscale_internal.h.

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

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)

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().

Array of horizontal filter coefficients for luma/alpha planes.

Definition at line 298 of file swscale_internal.h.

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

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

Definition at line 302 of file swscale_internal.h.

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

Horizontal filter size for luma/alpha pixels.

Definition at line 306 of file swscale_internal.h.

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

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 15bpc in 16bits (int16_t) width. Else (i.e. SwsContext->dstBpc == 16), data will be 19bpc in 32bits (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 8bits (uint8_t) width. Else (i.e. SwsContext->dstBpc > 8), this is native depth in 16bits (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.

Referenced by ff_sws_init_swScale_altivec(), ff_sws_init_swScale_mmx(), 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)

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 7bit instead of 14bit 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.

Referenced by hyscale(), and sws_init_swScale_c().

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

Definition at line 277 of file swscale_internal.h.

Referenced by swScale().

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

Definition at line 276 of file swscale_internal.h.

Referenced by swScale().

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

Definition at line 278 of file swscale_internal.h.

Referenced by swScale().

Color range conversion function for luma plane if needed.

Referenced by hyscale(), and sws_init_swScale_c().

const uint8_t * SwsContext::lumDither8

Definition at line 396 of file swscale_internal.h.

Referenced by swScale().

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

Definition at line 314 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

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

Definition at line 312 of file swscale_internal.h.

Referenced by sws_freeContext(), and sws_init_context().

int32_t SwsContext::lumMmxFilter[4 *MAX_FILTER_SIZE]

Definition at line 379 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST(), and swScale().

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

Definition at line 270 of file swscale_internal.h.

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

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.

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

Definition at line 242 of file swscale_internal.h.

Referenced by sws_init_context(), and swScale().

Definition at line 243 of file swscale_internal.h.

Referenced by sws_init_context().

Set if there are chroma planes to be converted.

Definition at line 529 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), and swScale().

uint32_t SwsContext::pal_rgb[256]

Definition at line 258 of file swscale_internal.h.

Referenced by palToRgbWrapper(), and sws_scale().

uint32_t SwsContext::pal_yuv[256]

Definition at line 257 of file swscale_internal.h.

Referenced by sws_scale(), and swScale().

double SwsContext::param[2]

Input parameters for scaling algorithms that need them.

Definition at line 255 of file swscale_internal.h.

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

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

Referenced by hcscale(), and sws_init_swScale_c().

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

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

Referenced by hyscale(), and sws_init_swScale_c().

Definition at line 367 of file swscale_internal.h.

Referenced by DECLARE_ASM_CONST().

Definition at line 328 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

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

Definition at line 254 of file swscale_internal.h.

Referenced by sws_scale().

Definition at line 333 of file swscale_internal.h.

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

Definition at line 329 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

Number of bits per pixel of the source pixel format.

Definition at line 247 of file swscale_internal.h.

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

Height of source luma/alpha planes.

Definition at line 236 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().

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

Definition at line 331 of file swscale_internal.h.

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

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

Definition at line 234 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+2 *YUVRGB_TABLE_HEADROOM]

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

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

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

Definition at line 384 of file swscale_internal.h.

Definition at line 377 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

Definition at line 426 of file swscale_internal.h.

Referenced by ff_sws_init_swScale_mmx(), and swScale().

ptrdiff_t SwsContext::uv_off

offset (in bytes) between u and v planes

Definition at line 392 of file swscale_internal.h.

Referenced by sws_init_context(), and swScale().

Definition at line 385 of file swscale_internal.h.

Number of vertical chroma lines allocated in the ring buffer.

Definition at line 275 of file swscale_internal.h.

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

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

Definition at line 253 of file swscale_internal.h.

Referenced by sws_init_context(), and swScale().

Array of vertical filter coefficients for chroma planes.

Definition at line 301 of file swscale_internal.h.

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

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

Definition at line 305 of file swscale_internal.h.

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

Vertical filter size for chroma pixels.

Definition at line 309 of file swscale_internal.h.

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

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

Definition at line 274 of file swscale_internal.h.

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

Array of vertical filter coefficients for luma/alpha planes.

Definition at line 300 of file swscale_internal.h.

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

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

Definition at line 304 of file swscale_internal.h.

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

Vertical filter size for luma/alpha pixels.

Definition at line 308 of file swscale_internal.h.

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

Definition at line 378 of file swscale_internal.h.

Referenced by ff_yuv2rgb_c_init_tables(), and ff_yuv2rgb_init_vis().

Definition at line 383 of file swscale_internal.h.

Referenced by sws_init_context().

Definition at line 386 of file swscale_internal.h.

Definition at line 431 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), and swScale().

Definition at line 432 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), and swScale().

Definition at line 433 of file swscale_internal.h.

Referenced by sws_init_swScale_c(), and swScale().

Definition at line 434 of file swscale_internal.h.

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

Definition at line 429 of file swscale_internal.h.

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

Definition at line 321 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:

Generated on Fri Oct 26 02:46:18 2012 for FFmpeg by  doxygen 1.5.8