libswscale/swscale_internal.h File Reference

#include "config.h"
#include "libavutil/avutil.h"
#include "libavutil/common.h"
#include "libavutil/log.h"
#include "libavutil/pixfmt.h"
#include "libavutil/pixdesc.h"

Go to the source code of this file.

Data Structures

struct SwsContext

Defines

#define STR(s)   AV_TOSTRING(s)

#define YUVRGB_TABLE_HEADROOM   128

#define FAST_BGR2YV12

#define MAX_FILTER_SIZE   256

#define DITHER1XBPP

#define ALT32_CORR   1

#define APCK_PTR2   4

#define APCK_COEF   8

#define APCK_SIZE   16

#define RED_DITHER   "0*8"

#define GREEN_DITHER   "1*8"

#define BLUE_DITHER   "2*8"

#define Y_COEFF   "3*8"

#define VR_COEFF   "4*8"

#define UB_COEFF   "5*8"

#define VG_COEFF   "6*8"

#define UG_COEFF   "7*8"

#define Y_OFFSET   "8*8"

#define U_OFFSET   "9*8"

#define V_OFFSET   "10*8"

#define LUM_MMX_FILTER_OFFSET   "11*8"

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

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

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

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

#define U_TEMP   "11*8+4*4*256*2+24"

#define V_TEMP   "11*8+4*4*256*2+32"

#define Y_TEMP   "11*8+4*4*256*2+40"

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

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

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

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

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

#define is16BPS(x)   (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15)

#define is9_OR_10BPS(x)

#define isNBPS(x)   is9_OR_10BPS(x)

#define isBE(x)   (av_pix_fmt_descriptors[x].flags & PIX_FMT_BE)

#define isYUV(x)

#define isPlanarYUV(x)

#define isRGB(x)   (av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB)

#define isGray(x)

#define isRGBinInt(x)

#define isBGRinInt(x)

#define isRGBinBytes(x)

#define isBGRinBytes(x)

#define isAnyRGB(x)

#define isALPHA(x)

#define isPacked(x)

#define isPlanar(x)

#define isPackedRGB(x)

#define isPlanarRGB(x)

#define usePal(x)

Typedefs

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

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

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

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

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

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

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

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

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

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

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

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

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

Functions

SwsFunc ff_yuv2rgb_get_func_ptr (SwsContext *c)

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

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

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

SwsFunc ff_yuv2rgb_init_mmx (SwsContext *c)

SwsFunc ff_yuv2rgb_init_vis (SwsContext *c)

SwsFunc ff_yuv2rgb_init_altivec (SwsContext *c)

SwsFunc ff_yuv2rgb_get_func_ptr_bfin (SwsContext *c)

void ff_bfin_get_unscaled_swscale (SwsContext *c)

void ff_get_unscaled_swscale (SwsContext *c)

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

void ff_swscale_get_unscaled_altivec (SwsContext *c)

SwsFunc ff_getSwsFunc (SwsContext *c)

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

void ff_sws_init_input_funcs (SwsContext *c)

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

void ff_sws_init_swScale_altivec (SwsContext *c)

void ff_sws_init_swScale_mmx (SwsContext *c)

Variables

const uint64_t ff_dither4 [2]

const uint64_t ff_dither8 [2]

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

const uint16_t dither_scale [15][16]

const AVClass sws_context_class

Define Documentation

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

Definition at line 362 of file swscale_internal.h.

Referenced by yuv2rgb32_X_ar_TMPL(), and yuv2rgb32_X_TMPL().

#define ALT32_CORR 1

Definition at line 49 of file swscale_internal.h.

Referenced by rgbToRgbWrapper().

#define APCK_COEF 8

Definition at line 58 of file swscale_internal.h.

#define APCK_PTR2 4

Definition at line 57 of file swscale_internal.h.

#define APCK_SIZE 16

Definition at line 59 of file swscale_internal.h.

Referenced by initFilter().

#define BLUE_DITHER "2*8"

Definition at line 345 of file swscale_internal.h.

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

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

Definition at line 355 of file swscale_internal.h.

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

Definition at line 365 of file swscale_internal.h.

#define DITHER1XBPP

Definition at line 44 of file swscale_internal.h.

Referenced by sws_init_context().

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

Definition at line 366 of file swscale_internal.h.

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

Definition at line 356 of file swscale_internal.h.

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

Definition at line 357 of file swscale_internal.h.

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

#define FAST_BGR2YV12

Definition at line 40 of file swscale_internal.h.

#define GREEN_DITHER "1*8"

Definition at line 344 of file swscale_internal.h.

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

#define is16BPS ( x ) (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15)

Definition at line 558 of file swscale_internal.h.

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

#define is9_OR_10BPS ( x )

Value:

(av_pix_fmt_descriptors[x].comp[0].depth_minus1 >= 8 && \
     av_pix_fmt_descriptors[x].comp[0].depth_minus1 <= 13)

Definition at line 561 of file swscale_internal.h.

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

#define isALPHA ( x )

Value:

(av_pix_fmt_descriptors[x].nb_components == 2          ||  \
     av_pix_fmt_descriptors[x].nb_components == 4)

Definition at line 661 of file swscale_internal.h.

#define isAnyRGB ( x )

Value:

(           \
          isRGBinInt(x)       ||    \
          isBGRinInt(x)       ||    \
          (x)==PIX_FMT_GBR24P     \
    )

Definition at line 654 of file swscale_internal.h.

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

#define isBE ( x ) (av_pix_fmt_descriptors[x].flags & PIX_FMT_BE)

Definition at line 567 of file swscale_internal.h.

Referenced by ff_sws_init_output_funcs(), ff_sws_init_swScale_mmx(), and planarCopyWrapper().

#define isBGRinBytes ( x )

Value:

(           \
           (x)==PIX_FMT_BGR48BE     \
        || (x)==PIX_FMT_BGR48LE     \
        || (x)==PIX_FMT_BGRA64BE    \
        || (x)==PIX_FMT_BGRA64LE    \
        || (x)==PIX_FMT_BGRA        \
        || (x)==PIX_FMT_ABGR        \
        || (x)==PIX_FMT_BGR24       \
    )

Definition at line 644 of file swscale_internal.h.

#define isBGRinInt ( x )

Value:

(           \
         (x)==PIX_FMT_BGR48BE  ||   \
         (x)==PIX_FMT_BGR48LE  ||   \
         (x)==PIX_FMT_BGRA64BE ||   \
         (x)==PIX_FMT_BGRA64LE ||   \
         (x)==PIX_FMT_BGR32    ||   \
         (x)==PIX_FMT_BGR32_1  ||   \
         (x)==PIX_FMT_BGR24    ||   \
         (x)==PIX_FMT_BGR565BE ||   \
         (x)==PIX_FMT_BGR565LE ||   \
         (x)==PIX_FMT_BGR555BE ||   \
         (x)==PIX_FMT_BGR555LE ||   \
         (x)==PIX_FMT_BGR444BE ||   \
         (x)==PIX_FMT_BGR444LE ||   \
         (x)==PIX_FMT_BGR8     ||   \
         (x)==PIX_FMT_BGR4     ||   \
         (x)==PIX_FMT_BGR4_BYTE||   \
         (x)==PIX_FMT_MONOBLACK||   \
         (x)==PIX_FMT_MONOWHITE   \
    )

Definition at line 613 of file swscale_internal.h.

Referenced by findRgbConvFn().

#define isGray ( x )

Value:

((x) == PIX_FMT_GRAY8       ||     \
     (x) == PIX_FMT_Y400A       ||     \
     (x) == PIX_FMT_GRAY16BE    ||     \
     (x) == PIX_FMT_GRAY16LE)

Definition at line 585 of file swscale_internal.h.

#define isNBPS ( x ) is9_OR_10BPS(x)

Definition at line 565 of file swscale_internal.h.

Referenced by planarCopyWrapper(), and sws_init_context().

#define isPacked ( x )

Value:

(       \
           (x)==PIX_FMT_PAL8        \
        || (x)==PIX_FMT_YUYV422     \
        || (x)==PIX_FMT_UYVY422     \
        || (x)==PIX_FMT_Y400A       \
        ||  isRGBinInt(x)           \
        ||  isBGRinInt(x)           \
    )

Definition at line 666 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), and swScale().

#define isPackedRGB ( x )

Value:

((av_pix_fmt_descriptors[x].flags                        & \
     (PIX_FMT_PLANAR | PIX_FMT_RGB)) == PIX_FMT_RGB)

Definition at line 685 of file swscale_internal.h.

#define isPlanar ( x )

Value:

(av_pix_fmt_descriptors[x].nb_components >= 2          &&  \
     (av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR))

Definition at line 681 of file swscale_internal.h.

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

#define isPlanarRGB ( x )

Value:

((av_pix_fmt_descriptors[x].flags                        & \
     (PIX_FMT_PLANAR | PIX_FMT_RGB)) == (PIX_FMT_PLANAR | PIX_FMT_RGB))

Definition at line 689 of file swscale_internal.h.

#define isPlanarYUV ( x )

Value:

((av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR) && \
     isYUV(x))

Definition at line 574 of file swscale_internal.h.

Referenced by ff_get_unscaled_swscale(), and swScale().

#define isRGB ( x ) (av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB)

Definition at line 578 of file swscale_internal.h.

#define isRGBinBytes ( x )

Value:

(           \
           (x)==PIX_FMT_RGB48BE     \
        || (x)==PIX_FMT_RGB48LE     \
        || (x)==PIX_FMT_RGBA64BE    \
        || (x)==PIX_FMT_RGBA64LE    \
        || (x)==PIX_FMT_RGBA        \
        || (x)==PIX_FMT_ARGB        \
        || (x)==PIX_FMT_RGB24       \
    )

Definition at line 635 of file swscale_internal.h.

#define isRGBinInt ( x )

Value:

(           \
        (x)==PIX_FMT_RGB48BE   ||   \
        (x)==PIX_FMT_RGB48LE   ||   \
        (x)==PIX_FMT_RGBA64BE  ||   \
        (x)==PIX_FMT_RGBA64LE  ||   \
        (x)==PIX_FMT_RGB32     ||   \
        (x)==PIX_FMT_RGB32_1   ||   \
        (x)==PIX_FMT_RGB24     ||   \
        (x)==PIX_FMT_RGB565BE  ||   \
        (x)==PIX_FMT_RGB565LE  ||   \
        (x)==PIX_FMT_RGB555BE  ||   \
        (x)==PIX_FMT_RGB555LE  ||   \
        (x)==PIX_FMT_RGB444BE  ||   \
        (x)==PIX_FMT_RGB444LE  ||   \
        (x)==PIX_FMT_RGB8      ||   \
        (x)==PIX_FMT_RGB4      ||   \
        (x)==PIX_FMT_RGB4_BYTE ||   \
        (x)==PIX_FMT_MONOBLACK ||   \
        (x)==PIX_FMT_MONOWHITE   \
    )

Definition at line 592 of file swscale_internal.h.

Referenced by findRgbConvFn().

#define isYUV ( x )

Value:

(!(av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB) && \
     av_pix_fmt_descriptors[x].nb_components >= 2)

Definition at line 570 of file swscale_internal.h.

Referenced by sws_getColorspaceDetails(), and sws_setColorspaceDetails().

#define LUM_MMX_FILTER_OFFSET "11*8"

Definition at line 354 of file swscale_internal.h.

#define MAX_FILTER_SIZE 256

Definition at line 42 of file swscale_internal.h.

Referenced by initFilter().

#define RED_DITHER "0*8"

Definition at line 343 of file swscale_internal.h.

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

#define STR ( s ) AV_TOSTRING(s)

Definition at line 36 of file swscale_internal.h.

Referenced by av_register_all().

#define U_OFFSET "9*8"

Definition at line 352 of file swscale_internal.h.

#define U_TEMP "11*8+4*4*256*2+24"

Definition at line 359 of file swscale_internal.h.

Referenced by yuv2rgb32_2_TMPL(), and yuv2rgb32_X_ar_TMPL().

#define UB_COEFF "5*8"

Definition at line 348 of file swscale_internal.h.

#define UG_COEFF "7*8"

Definition at line 350 of file swscale_internal.h.

#define usePal ( x )

Value:

((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)       || \
                   (av_pix_fmt_descriptors[x].flags & PIX_FMT_PSEUDOPAL))

Definition at line 693 of file swscale_internal.h.

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

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

Definition at line 364 of file swscale_internal.h.

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

Definition at line 363 of file swscale_internal.h.

#define V_OFFSET "10*8"

Definition at line 353 of file swscale_internal.h.

#define V_TEMP "11*8+4*4*256*2+32"

Definition at line 360 of file swscale_internal.h.

Referenced by yuv2rgb32_2_TMPL(), and yuv2rgb32_X_ar_TMPL().

#define VG_COEFF "6*8"

Definition at line 349 of file swscale_internal.h.

#define VR_COEFF "4*8"

Definition at line 347 of file swscale_internal.h.

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

Definition at line 358 of file swscale_internal.h.

#define Y_COEFF "3*8"

Definition at line 346 of file swscale_internal.h.

#define Y_OFFSET "8*8"

Definition at line 351 of file swscale_internal.h.

#define Y_TEMP "11*8+4*4*256*2+40"

Definition at line 361 of file swscale_internal.h.

Referenced by yuv2rgb32_X_ar_TMPL().

#define YUVRGB_TABLE_HEADROOM 128

Definition at line 38 of file swscale_internal.h.

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

Typedef Documentation

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

Definition at line 64 of file swscale_internal.h.

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

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

Parameters:

	c	SWS scaling context
	chrFilter	vertical chroma scaling coefficients, 12bit [0,4096]
	chrUSrc	scaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	chrVSrc	scaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	chrFilterSize	number of vertical chroma input lines to scale
	dest	pointer to the output plane. For >8bit output, this is in uint16_t
	dstW	width of chroma planes

Definition at line 115 of file swscale_internal.h.

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

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

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

Parameters:

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

Definition at line 151 of file swscale_internal.h.

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

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

Parameters:

	c	SWS scaling context
	lumSrc	scaled luma (Y) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	chrUSrc	scaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	chrVSrc	scaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	alpSrc	scaled alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	dest	pointer to the output plane. For 16bit output, this is uint16_t
	dstW	width of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
	yalpha	luma/alpha scaling coefficients for the second input line. The first line's coefficients can be calculated by using 4096 - yalpha
	uvalpha	chroma scaling coefficient for the second input line. The first line's coefficients can be calculated by using 4096 - uvalpha
	y	vertical line number for this output. This does not need to be used to calculate the offset in the destination, but can be used to generate comfort noise using dithering for some output formats.

Definition at line 184 of file swscale_internal.h.

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

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

Parameters:

	c	SWS scaling context
	lumFilter	vertical luma/alpha scaling coefficients, 12bit [0,4096]
	lumSrc	scaled luma (Y) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	lumFilterSize	number of vertical luma/alpha input lines to scale
	chrFilter	vertical chroma scaling coefficients, 12bit [0,4096]
	chrUSrc	scaled chroma (U) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	chrVSrc	scaled chroma (V) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	chrFilterSize	number of vertical chroma input lines to scale
	alpSrc	scaled alpha (A) source data, 15bit for 8-10bit output, 19-bit for 16bit output (in int32_t)
	dest	pointer to the output plane. For 16bit output, this is uint16_t
	dstW	width of lumSrc and alpSrc in pixels, number of pixels to write into dest[]
	y	vertical line number for this output. This does not need to be used to calculate the offset in the destination, but can be used to generate comfort noise using dithering or some output formats.

Definition at line 216 of file swscale_internal.h.

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

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

Parameters:

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

Definition at line 80 of file swscale_internal.h.

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

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

Parameters:

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

Definition at line 96 of file swscale_internal.h.

Function Documentation

void ff_bfin_get_unscaled_swscale ( SwsContext * c )

Definition at line 74 of file swscale_bfin.c.

Referenced by ff_get_unscaled_swscale().

void ff_get_unscaled_swscale ( SwsContext * c )

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

Definition at line 940 of file swscale_unscaled.c.

Referenced by sws_init_context().

SwsFunc ff_getSwsFunc ( SwsContext * c )

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

Definition at line 731 of file swscale.c.

Referenced by sws_init_context().

void ff_sws_init_input_funcs ( SwsContext * c )

Definition at line 865 of file input.c.

Referenced by sws_init_swScale_c().

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

Definition at line 1264 of file output.c.

Referenced by sws_init_swScale_c(), and swScale().

void ff_sws_init_swScale_altivec ( SwsContext * c )

Definition at line 314 of file swscale_altivec.c.

Referenced by ff_getSwsFunc().

void ff_sws_init_swScale_mmx ( SwsContext * c )

Definition at line 372 of file swscale.c.

Referenced by ff_getSwsFunc().

void ff_swscale_get_unscaled_altivec ( SwsContext * c )

Definition at line 182 of file yuv2yuv_altivec.c.

Referenced by ff_get_unscaled_swscale().

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

Definition at line 706 of file yuv2rgb.c.

Referenced by sws_setColorspaceDetails().

SwsFunc ff_yuv2rgb_get_func_ptr ( SwsContext * c )

Definition at line 607 of file yuv2rgb.c.

Referenced by ff_get_unscaled_swscale().

SwsFunc ff_yuv2rgb_get_func_ptr_bfin ( SwsContext * c )

Definition at line 171 of file yuv2rgb_bfin.c.

Referenced by ff_yuv2rgb_get_func_ptr().

SwsFunc ff_yuv2rgb_init_altivec ( SwsContext * c )

Definition at line 535 of file yuv2rgb_altivec.c.

Referenced by ff_yuv2rgb_get_func_ptr().

SwsFunc ff_yuv2rgb_init_mmx ( SwsContext * c )

Definition at line 72 of file yuv2rgb.c.

Referenced by ff_yuv2rgb_get_func_ptr().

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

Definition at line 595 of file yuv2rgb_altivec.c.

Referenced by sws_setColorspaceDetails().

SwsFunc ff_yuv2rgb_init_vis ( SwsContext * c )

Definition at line 188 of file yuv2rgb_vis.c.

Referenced by ff_yuv2rgb_get_func_ptr().

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

Referenced by swScale().

Variable Documentation

const uint16_t dither_scale[15][16]

Definition at line 125 of file swscale_unscaled.c.

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

Definition at line 48 of file swscale_unscaled.c.

const uint64_t ff_dither4[2]

Referenced by yuv420_rgb16_TMPL().

const uint64_t ff_dither8[2]

Referenced by yuv420_rgb15_TMPL(), and yuv420_rgb16_TMPL().

const AVClass sws_context_class

Definition at line 69 of file options.c.

Referenced by sws_alloc_context().


Data Structures
struct	SwsContext
Defines
#define	STR(s) AV_TOSTRING(s)
#define	YUVRGB_TABLE_HEADROOM 128
#define	FAST_BGR2YV12
#define	MAX_FILTER_SIZE 256
#define	DITHER1XBPP
#define	ALT32_CORR 1
#define	APCK_PTR2 4
#define	APCK_COEF 8
#define	APCK_SIZE 16
#define	RED_DITHER "0*8"
#define	GREEN_DITHER "1*8"
#define	BLUE_DITHER "2*8"
#define	Y_COEFF "3*8"
#define	VR_COEFF "4*8"
#define	UB_COEFF "5*8"
#define	VG_COEFF "6*8"
#define	UG_COEFF "7*8"
#define	Y_OFFSET "8*8"
#define	U_OFFSET "9*8"
#define	V_OFFSET "10*8"
#define	LUM_MMX_FILTER_OFFSET "11*8"
#define	CHR_MMX_FILTER_OFFSET "118+44*256"
#define	DSTW_OFFSET "118+442562"
#define	ESP_OFFSET "118+442562+8"
#define	VROUNDER_OFFSET "118+442562+16"
#define	U_TEMP "118+442562+24"
#define	V_TEMP "118+442562+32"
#define	Y_TEMP "118+442562+40"
#define	ALP_MMX_FILTER_OFFSET "118+442562+48"
#define	UV_OFF_PX "118+442563+48"
#define	UV_OFF_BYTE "118+442563+56"
#define	DITHER16 "118+442563+64"
#define	DITHER32 "118+442563+80"
#define	is16BPS(x) (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15)
#define	is9_OR_10BPS(x)
#define	isNBPS(x) is9_OR_10BPS(x)
#define	isBE(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_BE)
#define	isYUV(x)
#define	isPlanarYUV(x)
#define	isRGB(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB)
#define	isGray(x)
#define	isRGBinInt(x)
#define	isBGRinInt(x)
#define	isRGBinBytes(x)
#define	isBGRinBytes(x)
#define	isAnyRGB(x)
#define	isALPHA(x)
#define	isPacked(x)
#define	isPlanar(x)
#define	isPackedRGB(x)
#define	isPlanarRGB(x)
#define	usePal(x)
Typedefs
typedef int(*	SwsFunc )(struct SwsContext context, const uint8_t src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
typedef void(*	yuv2planar1_fn )(const int16_t src, uint8_t dest, int dstW, const uint8_t *dither, int offset)
	Write one line of horizontally scaled data to planar output without any additional vertical scaling (or point-scaling).
typedef void(*	yuv2planarX_fn )(const int16_t filter, int filterSize, const int16_t src, uint8_t dest, int dstW, const uint8_t *dither, int offset)
	Write one line of horizontally scaled data to planar output with multi-point vertical scaling between input pixels.
typedef void(*	yuv2interleavedX_fn )(struct SwsContext c, const int16_t chrFilter, int chrFilterSize, const int16_t chrUSrc, const int16_t chrVSrc, uint8_t *dest, int dstW)
	Write one line of horizontally scaled chroma to interleaved output with multi-point vertical scaling between input pixels.
typedef void(*	yuv2packed1_fn )(struct SwsContext c, const int16_t lumSrc, const int16_t chrUSrc[2], const int16_t chrVSrc[2], const int16_t alpSrc, uint8_t dest, int dstW, int uvalpha, int y)
	Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output without any additional vertical scaling (or point-scaling).
typedef void(*	yuv2packed2_fn )(struct SwsContext c, const int16_t lumSrc[2], const int16_t chrUSrc[2], const int16_t chrVSrc[2], const int16_t alpSrc[2], uint8_t dest, int dstW, int yalpha, int uvalpha, int y)
	Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing bilinear scaling between two input lines.
typedef void(*	yuv2packedX_fn )(struct SwsContext c, const int16_t lumFilter, const int16_t *lumSrc, int lumFilterSize, const int16_t chrFilter, const int16_t chrUSrc, const int16_t chrVSrc, int chrFilterSize, const int16_t *alpSrc, uint8_t dest, int dstW, int y)
	Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing multi-point vertical scaling between input pixels.
Functions
SwsFunc	ff_yuv2rgb_get_func_ptr (SwsContext *c)
int	ff_yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
void	ff_yuv2rgb_init_tables_altivec (SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
void	updateMMXDitherTables (SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, int lastInLumBuf, int lastInChrBuf)
SwsFunc	ff_yuv2rgb_init_mmx (SwsContext *c)
SwsFunc	ff_yuv2rgb_init_vis (SwsContext *c)
SwsFunc	ff_yuv2rgb_init_altivec (SwsContext *c)
SwsFunc	ff_yuv2rgb_get_func_ptr_bfin (SwsContext *c)
void	ff_bfin_get_unscaled_swscale (SwsContext *c)
void	ff_get_unscaled_swscale (SwsContext *c)
	Set c->swScale to an unscaled converter if one exists for the specific source and destination formats, bit depths, flags, etc.
void	ff_swscale_get_unscaled_altivec (SwsContext *c)
SwsFunc	ff_getSwsFunc (SwsContext *c)
	Return function pointer to fastest main scaler path function depending on architecture and available optimizations.
void	ff_sws_init_input_funcs (SwsContext *c)
void	ff_sws_init_output_funcs (SwsContext c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX, yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2, yuv2packedX_fn *yuv2packedX)
void	ff_sws_init_swScale_altivec (SwsContext *c)
void	ff_sws_init_swScale_mmx (SwsContext *c)
Variables
const uint64_t	ff_dither4 [2]
const uint64_t	ff_dither8 [2]
const uint8_t	dithers [8][8][8]
const uint16_t	dither_scale [15][16]
const AVClass	sws_context_class