/* * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef SWSCALE_SWSCALE_INTERNAL_H #define SWSCALE_SWSCALE_INTERNAL_H #include "config.h" #if HAVE_ALTIVEC_H #include <altivec.h> #endif #include "libavutil/avutil.h" #define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long #define FAST_BGR2YV12 //use 7-bit instead of 15-bit coefficients #define MAX_FILTER_SIZE 256 #if HAVE_BIGENDIAN #define ALT32_CORR (-1) #else #define ALT32_CORR 1 #endif #if ARCH_X86_64 # define APCK_PTR2 8 # define APCK_COEF 16 # define APCK_SIZE 24 #else # define APCK_PTR2 4 # define APCK_COEF 8 # define APCK_SIZE 16 #endif struct SwsContext; typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dst[], int dstStride[]); /* This struct should be aligned on at least a 32-byte boundary. */ typedef struct SwsContext { /** * info on struct for av_log */ const AVClass *av_class; /** * Note that src, dst, srcStride, dstStride will be copied in the * sws_scale() wrapper so they can be freely modified here. */ SwsFunc swScale; 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, chrXInc; int lumYInc, 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]; /** * @name 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. //@} uint8_t *formatConvBuffer; /** * @name Horizontal and vertical filters. * To better understand the following fields, here is a pseudo-code of * their usage in filtering a horizontal line: * @code * 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. * } * @endcode */ //@{ 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. //@} 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; // pointer to the yuv->rgb table start so it can be freed() uint8_t * table_rV[256]; uint8_t * table_gU[256]; int table_gV[256]; uint8_t * table_bU[256]; //Colorspace stuff int contrast, brightness, saturation; // for sws_getColorspaceDetails 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; #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" //do not change, it is hardcoded in the ASM #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 "11*8+4*4*256*3+48" #define UV_OFFx2 "11*8+4*4*256*3+56" DECLARE_ALIGNED(8, uint64_t, redDither); DECLARE_ALIGNED(8, uint64_t, greenDither); DECLARE_ALIGNED(8, uint64_t, blueDither); DECLARE_ALIGNED(8, uint64_t, yCoeff); DECLARE_ALIGNED(8, uint64_t, vrCoeff); DECLARE_ALIGNED(8, uint64_t, ubCoeff); DECLARE_ALIGNED(8, uint64_t, vgCoeff); DECLARE_ALIGNED(8, uint64_t, ugCoeff); DECLARE_ALIGNED(8, uint64_t, yOffset); DECLARE_ALIGNED(8, uint64_t, uOffset); DECLARE_ALIGNED(8, 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. DECLARE_ALIGNED(8, uint64_t, esp); DECLARE_ALIGNED(8, uint64_t, vRounder); DECLARE_ALIGNED(8, uint64_t, u_temp); DECLARE_ALIGNED(8, uint64_t, v_temp); DECLARE_ALIGNED(8, uint64_t, y_temp); int32_t alpMmxFilter[4*MAX_FILTER_SIZE]; DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes #if HAVE_ALTIVEC vector signed short CY; vector signed short CRV; vector signed short CBU; vector signed short CGU; vector signed short CGV; vector signed short OY; vector unsigned short CSHIFT; vector signed short *vYCoeffsBank, *vCCoeffsBank; #endif #if ARCH_BFIN DECLARE_ALIGNED(4, uint32_t, oy); DECLARE_ALIGNED(4, uint32_t, oc); DECLARE_ALIGNED(4, uint32_t, zero); DECLARE_ALIGNED(4, uint32_t, cy); DECLARE_ALIGNED(4, uint32_t, crv); DECLARE_ALIGNED(4, uint32_t, rmask); DECLARE_ALIGNED(4, uint32_t, cbu); DECLARE_ALIGNED(4, uint32_t, bmask); DECLARE_ALIGNED(4, uint32_t, cgu); DECLARE_ALIGNED(4, uint32_t, cgv); DECLARE_ALIGNED(4, uint32_t, gmask); #endif #if HAVE_VIS DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10]; #endif /* function pointers for swScale() */ void (*yuv2yuv1 )(struct SwsContext *c, const int16_t *lumSrc, const int16_t *chrUSrc, const int16_t *chrVSrc, const int16_t *alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW); void (*yuv2yuvX )(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, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW); void (*yuv2packed1)(struct SwsContext *c, const uint16_t *buf0, const uint16_t *ubuf0, const uint16_t *ubuf1, const uint16_t *vbuf0, const uint16_t *vbuf1, const uint16_t *abuf0, uint8_t *dest, int dstW, int uvalpha, int dstFormat, int flags, int y); void (*yuv2packed2)(struct SwsContext *c, const uint16_t *buf0, const uint16_t *buf1, const uint16_t *ubuf0, const uint16_t *ubuf1, const uint16_t *vbuf0, const uint16_t *vbuf1, const uint16_t *abuf0, const uint16_t *abuf1, uint8_t *dest, int dstW, int yalpha, int uvalpha, int y); void (*yuv2packedX)(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 dstY); 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 (*lumConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for luma plane if needed. void (*chrConvertRange)(uint16_t *dst1, uint16_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. } SwsContext; //FIXME check init (where 0) 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_mlib(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); const char *sws_format_name(enum PixelFormat format); //FIXME replace this with something faster #define is16BPS(x) ( \ (x)==PIX_FMT_GRAY16BE \ || (x)==PIX_FMT_GRAY16LE \ || (x)==PIX_FMT_BGR48BE \ || (x)==PIX_FMT_BGR48LE \ || (x)==PIX_FMT_RGB48BE \ || (x)==PIX_FMT_RGB48LE \ || (x)==PIX_FMT_YUV420P16LE \ || (x)==PIX_FMT_YUV422P16LE \ || (x)==PIX_FMT_YUV444P16LE \ || (x)==PIX_FMT_YUV420P16BE \ || (x)==PIX_FMT_YUV422P16BE \ || (x)==PIX_FMT_YUV444P16BE \ ) #define is9_OR_10BPS(x) ( \ (x)==PIX_FMT_YUV420P9LE \ || (x)==PIX_FMT_YUV420P9BE \ || (x)==PIX_FMT_YUV420P10LE \ || (x)==PIX_FMT_YUV420P10BE \ ) #define isBE(x) ((x)&1) #define isPlanar8YUV(x) ( \ (x)==PIX_FMT_YUV410P \ || (x)==PIX_FMT_YUV420P \ || (x)==PIX_FMT_YUVA420P \ || (x)==PIX_FMT_YUV411P \ || (x)==PIX_FMT_YUV422P \ || (x)==PIX_FMT_YUV444P \ || (x)==PIX_FMT_YUV440P \ || (x)==PIX_FMT_NV12 \ || (x)==PIX_FMT_NV21 \ ) #define isPlanarYUV(x) ( \ isPlanar8YUV(x) \ || (x)==PIX_FMT_YUV420P9LE \ || (x)==PIX_FMT_YUV420P10LE \ || (x)==PIX_FMT_YUV420P16LE \ || (x)==PIX_FMT_YUV422P16LE \ || (x)==PIX_FMT_YUV444P16LE \ || (x)==PIX_FMT_YUV420P9BE \ || (x)==PIX_FMT_YUV420P10BE \ || (x)==PIX_FMT_YUV420P16BE \ || (x)==PIX_FMT_YUV422P16BE \ || (x)==PIX_FMT_YUV444P16BE \ ) #define isYUV(x) ( \ (x)==PIX_FMT_UYVY422 \ || (x)==PIX_FMT_YUYV422 \ || isPlanarYUV(x) \ ) #define isGray(x) ( \ (x)==PIX_FMT_GRAY8 \ || (x)==PIX_FMT_Y400A \ || (x)==PIX_FMT_GRAY16BE \ || (x)==PIX_FMT_GRAY16LE \ ) #define isGray16(x) ( \ (x)==PIX_FMT_GRAY16BE \ || (x)==PIX_FMT_GRAY16LE \ ) #define isRGBinInt(x) ( \ (x)==PIX_FMT_RGB48BE \ || (x)==PIX_FMT_RGB48LE \ || (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 \ ) #define isBGRinInt(x) ( \ (x)==PIX_FMT_BGR48BE \ || (x)==PIX_FMT_BGR48LE \ || (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 \ ) #define isRGBinBytes(x) ( \ (x)==PIX_FMT_RGB48BE \ || (x)==PIX_FMT_RGB48LE \ || (x)==PIX_FMT_RGBA \ || (x)==PIX_FMT_ARGB \ || (x)==PIX_FMT_RGB24 \ ) #define isBGRinBytes(x) ( \ (x)==PIX_FMT_BGR48BE \ || (x)==PIX_FMT_BGR48LE \ || (x)==PIX_FMT_BGRA \ || (x)==PIX_FMT_ABGR \ || (x)==PIX_FMT_BGR24 \ ) #define isAnyRGB(x) ( \ isRGBinInt(x) \ || isBGRinInt(x) \ ) #define isALPHA(x) ( \ (x)==PIX_FMT_BGR32 \ || (x)==PIX_FMT_BGR32_1 \ || (x)==PIX_FMT_RGB32 \ || (x)==PIX_FMT_RGB32_1 \ || (x)==PIX_FMT_Y400A \ || (x)==PIX_FMT_YUVA420P \ ) #define isPacked(x) ( \ (x)==PIX_FMT_PAL8 \ || (x)==PIX_FMT_YUYV422 \ || (x)==PIX_FMT_UYVY422 \ || (x)==PIX_FMT_Y400A \ || isAnyRGB(x) \ ) #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A) extern const uint64_t ff_dither4[2]; extern const uint64_t ff_dither8[2]; extern const AVClass sws_context_class; /** * Sets c->swScale to an unscaled converter if one exists for the specific * source and destination formats, bit depths, flags, etc. */ void ff_get_unscaled_swscale(SwsContext *c); void ff_swscale_get_unscaled_altivec(SwsContext *c); /** * Returns function pointer to fastest main scaler path function depending * on architecture and available optimizations. */ SwsFunc ff_getSwsFunc(SwsContext *c); void ff_sws_init_swScale_altivec(SwsContext *c); void ff_sws_init_swScale_mmx(SwsContext *c); #endif /* SWSCALE_SWSCALE_INTERNAL_H */