libswscale/swscale_internal.h

   1 /*
   2  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef FFMPEG_SWSCALE_INTERNAL_H
  22 #define FFMPEG_SWSCALE_INTERNAL_H
  23
  24 #include "config.h"
  25
  26 #ifdef HAVE_ALTIVEC_H
  27 #include <altivec.h>
  28 #endif
  29
  30 #include "avutil.h"
  31
  32 #define MAX_FILTER_SIZE 256
  33
  34 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
  35              int srcSliceH, uint8_t* dst[], int dstStride[]);
  36
  37 /* this struct should be aligned on at least 32-byte boundary */
  38 typedef struct SwsContext{
  39     /**
  40      * info on struct for av_log
  41      */
  42     AVClass *av_class;
  43
  44     /**
  45      * Note that src, dst, srcStride, dstStride will be copied in the
  46      * sws_scale() wrapper so they can be freely modified here.
  47      */
  48     SwsFunc swScale;
  49     int srcW, srcH, dstH;
  50     int chrSrcW, chrSrcH, chrDstW, chrDstH;
  51     int lumXInc, chrXInc;
  52     int lumYInc, chrYInc;
  53     int dstFormat, srcFormat;               ///< format 4:2:0 type is always YV12
  54     int origDstFormat, origSrcFormat;       ///< format
  55     int chrSrcHSubSample, chrSrcVSubSample;
  56     int chrIntHSubSample, chrIntVSubSample;
  57     int chrDstHSubSample, chrDstVSubSample;
  58     int vChrDrop;
  59     int sliceDir;
  60     double param[2];
  61
  62     int16_t **lumPixBuf;
  63     int16_t **chrPixBuf;
  64     int16_t *hLumFilter;
  65     int16_t *hLumFilterPos;
  66     int16_t *hChrFilter;
  67     int16_t *hChrFilterPos;
  68     int16_t *vLumFilter;
  69     int16_t *vLumFilterPos;
  70     int16_t *vChrFilter;
  71     int16_t *vChrFilterPos;
  72
  73     uint8_t formatConvBuffer[4000]; //FIXME dynamic alloc, but we have to change a lot of code for this to be useful
  74
  75     int hLumFilterSize;
  76     int hChrFilterSize;
  77     int vLumFilterSize;
  78     int vChrFilterSize;
  79     int vLumBufSize;
  80     int vChrBufSize;
  81
  82     uint8_t *funnyYCode;
  83     uint8_t *funnyUVCode;
  84     int32_t *lumMmx2FilterPos;
  85     int32_t *chrMmx2FilterPos;
  86     int16_t *lumMmx2Filter;
  87     int16_t *chrMmx2Filter;
  88
  89     int canMMX2BeUsed;
  90
  91     int lastInLumBuf;
  92     int lastInChrBuf;
  93     int lumBufIndex;
  94     int chrBufIndex;
  95     int dstY;
  96     int flags;
  97     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
  98     uint8_t * table_rV[256];
  99     uint8_t * table_gU[256];
 100     int    table_gV[256];
 101     uint8_t * table_bU[256];
 102
 103     //Colorspace stuff
 104     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
 105     int srcColorspaceTable[4];
 106     int dstColorspaceTable[4];
 107     int srcRange, dstRange;
 108
 109 #define RED_DITHER            "0*8"
 110 #define GREEN_DITHER          "1*8"
 111 #define BLUE_DITHER           "2*8"
 112 #define Y_COEFF               "3*8"
 113 #define VR_COEFF              "4*8"
 114 #define UB_COEFF              "5*8"
 115 #define VG_COEFF              "6*8"
 116 #define UG_COEFF              "7*8"
 117 #define Y_OFFSET              "8*8"
 118 #define U_OFFSET              "9*8"
 119 #define V_OFFSET              "10*8"
 120 #define LUM_MMX_FILTER_OFFSET "11*8"
 121 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
 122 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the asm
 123 #define ESP_OFFSET            "11*8+4*4*256*2+8"
 124 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
 125 #define U_TEMP                "11*8+4*4*256*2+24"
 126 #define V_TEMP                "11*8+4*4*256*2+32"
 127
 128     uint64_t redDither   __attribute__((aligned(8)));
 129     uint64_t greenDither __attribute__((aligned(8)));
 130     uint64_t blueDither  __attribute__((aligned(8)));
 131
 132     uint64_t yCoeff      __attribute__((aligned(8)));
 133     uint64_t vrCoeff     __attribute__((aligned(8)));
 134     uint64_t ubCoeff     __attribute__((aligned(8)));
 135     uint64_t vgCoeff     __attribute__((aligned(8)));
 136     uint64_t ugCoeff     __attribute__((aligned(8)));
 137     uint64_t yOffset     __attribute__((aligned(8)));
 138     uint64_t uOffset     __attribute__((aligned(8)));
 139     uint64_t vOffset     __attribute__((aligned(8)));
 140     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
 141     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
 142     int dstW;
 143     uint64_t esp          __attribute__((aligned(8)));
 144     uint64_t vRounder     __attribute__((aligned(8)));
 145     uint64_t u_temp       __attribute__((aligned(8)));
 146     uint64_t v_temp       __attribute__((aligned(8)));
 147
 148 #ifdef HAVE_ALTIVEC
 149
 150   vector signed short   CY;
 151   vector signed short   CRV;
 152   vector signed short   CBU;
 153   vector signed short   CGU;
 154   vector signed short   CGV;
 155   vector signed short   OY;
 156   vector unsigned short CSHIFT;
 157   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
 158
 159 #endif
 160
 161
 162 #ifdef ARCH_BFIN
 163     uint32_t oy           __attribute__((aligned(4)));
 164     uint32_t oc           __attribute__((aligned(4)));
 165     uint32_t zero         __attribute__((aligned(4)));
 166     uint32_t cy           __attribute__((aligned(4)));
 167     uint32_t crv          __attribute__((aligned(4)));
 168     uint32_t rmask        __attribute__((aligned(4)));
 169     uint32_t cbu          __attribute__((aligned(4)));
 170     uint32_t bmask        __attribute__((aligned(4)));
 171     uint32_t cgu          __attribute__((aligned(4)));
 172     uint32_t cgv          __attribute__((aligned(4)));
 173     uint32_t gmask        __attribute__((aligned(4)));
 174 #endif
 175
 176 #ifdef HAVE_VIS
 177     uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
 178 #endif
 179
 180 } SwsContext;
 181 //FIXME check init (where 0)
 182
 183 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c);
 184 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
 185
 186 void yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4],int brightness,int contrast, int saturation);
 187 SwsFunc yuv2rgb_init_altivec (SwsContext *c);
 188 void altivec_yuv2packedX (SwsContext *c,
 189                           int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
 190                           int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
 191                           uint8_t *dest, int dstW, int dstY);
 192
 193 char *sws_format_name(int format);
 194
 195 //FIXME replace this with something faster
 196 #define isPlanarYUV(x)  (           \
 197            (x)==PIX_FMT_YUV410P     \
 198         || (x)==PIX_FMT_YUV420P     \
 199         || (x)==PIX_FMT_YUV411P     \
 200         || (x)==PIX_FMT_YUV422P     \
 201         || (x)==PIX_FMT_YUV444P     \
 202         || (x)==PIX_FMT_YUV440P     \
 203         || (x)==PIX_FMT_NV12        \
 204         || (x)==PIX_FMT_NV21        \
 205     )
 206 #define isYUV(x)        (           \
 207            (x)==PIX_FMT_UYVY422     \
 208         || (x)==PIX_FMT_YUYV422     \
 209         || isPlanarYUV(x)           \
 210     )
 211 #define isGray(x)       (           \
 212            (x)==PIX_FMT_GRAY8       \
 213         || (x)==PIX_FMT_GRAY16BE    \
 214         || (x)==PIX_FMT_GRAY16LE    \
 215     )
 216 #define isGray16(x)     (           \
 217            (x)==PIX_FMT_GRAY16BE    \
 218         || (x)==PIX_FMT_GRAY16LE    \
 219     )
 220 #define isRGB(x)        (           \
 221            (x)==PIX_FMT_BGR32       \
 222         || (x)==PIX_FMT_RGB24       \
 223         || (x)==PIX_FMT_RGB565      \
 224         || (x)==PIX_FMT_RGB555      \
 225         || (x)==PIX_FMT_RGB8        \
 226         || (x)==PIX_FMT_RGB4        \
 227         || (x)==PIX_FMT_RGB4_BYTE   \
 228         || (x)==PIX_FMT_MONOBLACK   \
 229     )
 230 #define isBGR(x)        (           \
 231            (x)==PIX_FMT_RGB32       \
 232         || (x)==PIX_FMT_BGR24       \
 233         || (x)==PIX_FMT_BGR565      \
 234         || (x)==PIX_FMT_BGR555      \
 235         || (x)==PIX_FMT_BGR8        \
 236         || (x)==PIX_FMT_BGR4        \
 237         || (x)==PIX_FMT_BGR4_BYTE   \
 238         || (x)==PIX_FMT_MONOBLACK   \
 239     )
 240
 241 static inline int fmt_depth(int fmt)
 242 {
 243     switch(fmt) {
 244         case PIX_FMT_BGRA:
 245         case PIX_FMT_ABGR:
 246         case PIX_FMT_RGBA:
 247         case PIX_FMT_ARGB:
 248             return 32;
 249         case PIX_FMT_BGR24:
 250         case PIX_FMT_RGB24:
 251             return 24;
 252         case PIX_FMT_BGR565:
 253         case PIX_FMT_RGB565:
 254         case PIX_FMT_GRAY16BE:
 255         case PIX_FMT_GRAY16LE:
 256             return 16;
 257         case PIX_FMT_BGR555:
 258         case PIX_FMT_RGB555:
 259             return 15;
 260         case PIX_FMT_BGR8:
 261         case PIX_FMT_RGB8:
 262             return 8;
 263         case PIX_FMT_BGR4:
 264         case PIX_FMT_RGB4:
 265         case PIX_FMT_BGR4_BYTE:
 266         case PIX_FMT_RGB4_BYTE:
 267             return 4;
 268         case PIX_FMT_MONOBLACK:
 269             return 1;
 270         default:
 271             return 0;
 272     }
 273 }
 274
 275 #endif /* FFMPEG_SWSCALE_INTERNAL_H */