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 St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef SWSCALE_INTERNAL_H
  22 #define SWSCALE_INTERNAL_H
  23
  24 #ifdef HAVE_ALTIVEC_H
  25 #include <altivec.h>
  26 #endif
  27
  28 #include "avutil.h"
  29
  30 #ifdef CONFIG_DARWIN
  31 #define AVV(x...) (x)
  32 #else
  33 #define AVV(x...) {x}
  34 #endif
  35
  36 #define MAX_FILTER_SIZE 256
  37
  38 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
  39              int srcSliceH, uint8_t* dst[], int dstStride[]);
  40
  41 /* this struct should be aligned on at least 32-byte boundary */
  42 typedef struct SwsContext{
  43         /**
  44          * info on struct for av_log
  45          */
  46         AVClass *av_class;
  47
  48         /**
  49          *
  50          * Note the src,dst,srcStride,dstStride will be copied, in the sws_scale() warper so they can freely be modified here
  51          */
  52         SwsFunc swScale;
  53         int srcW, srcH, dstH;
  54         int chrSrcW, chrSrcH, chrDstW, chrDstH;
  55         int lumXInc, chrXInc;
  56         int lumYInc, chrYInc;
  57         int dstFormat, srcFormat;               ///< format 4:2:0 type is allways YV12
  58         int origDstFormat, origSrcFormat;       ///< format
  59         int chrSrcHSubSample, chrSrcVSubSample;
  60         int chrIntHSubSample, chrIntVSubSample;
  61         int chrDstHSubSample, chrDstVSubSample;
  62         int vChrDrop;
  63         int sliceDir;
  64         double param[2];
  65
  66         int16_t **lumPixBuf;
  67         int16_t **chrPixBuf;
  68         int16_t *hLumFilter;
  69         int16_t *hLumFilterPos;
  70         int16_t *hChrFilter;
  71         int16_t *hChrFilterPos;
  72         int16_t *vLumFilter;
  73         int16_t *vLumFilterPos;
  74         int16_t *vChrFilter;
  75         int16_t *vChrFilterPos;
  76
  77         uint8_t formatConvBuffer[4000]; //FIXME dynamic alloc, but we have to change a lot of code for this to be useful
  78
  79         int hLumFilterSize;
  80         int hChrFilterSize;
  81         int vLumFilterSize;
  82         int vChrFilterSize;
  83         int vLumBufSize;
  84         int vChrBufSize;
  85
  86         uint8_t *funnyYCode;
  87         uint8_t *funnyUVCode;
  88         int32_t *lumMmx2FilterPos;
  89         int32_t *chrMmx2FilterPos;
  90         int16_t *lumMmx2Filter;
  91         int16_t *chrMmx2Filter;
  92
  93         int canMMX2BeUsed;
  94
  95         int lastInLumBuf;
  96         int lastInChrBuf;
  97         int lumBufIndex;
  98         int chrBufIndex;
  99         int dstY;
 100         int flags;
 101         void * yuvTable;                        // pointer to the yuv->rgb table start so it can be freed()
 102         uint8_t * table_rV[256];
 103         uint8_t * table_gU[256];
 104         int    table_gV[256];
 105         uint8_t * table_bU[256];
 106
 107         //Colorspace stuff
 108         int contrast, brightness, saturation;   // for sws_getColorspaceDetails
 109         int srcColorspaceTable[4];
 110         int dstColorspaceTable[4];
 111         int srcRange, dstRange;
 112
 113 #define RED_DITHER   "0*8"
 114 #define GREEN_DITHER "1*8"
 115 #define BLUE_DITHER  "2*8"
 116 #define Y_COEFF      "3*8"
 117 #define VR_COEFF     "4*8"
 118 #define UB_COEFF     "5*8"
 119 #define VG_COEFF     "6*8"
 120 #define UG_COEFF     "7*8"
 121 #define Y_OFFSET     "8*8"
 122 #define U_OFFSET     "9*8"
 123 #define V_OFFSET     "10*8"
 124 #define LUM_MMX_FILTER_OFFSET "11*8"
 125 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
 126 #define DSTW_OFFSET  "11*8+4*4*256*2" //do not change, its hardcoded in the asm
 127 #define ESP_OFFSET  "11*8+4*4*256*2+8"
 128 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
 129 #define U_TEMP       "11*8+4*4*256*2+24"
 130 #define V_TEMP       "11*8+4*4*256*2+32"
 131
 132         uint64_t redDither   __attribute__((aligned(8)));
 133         uint64_t greenDither __attribute__((aligned(8)));
 134         uint64_t blueDither  __attribute__((aligned(8)));
 135
 136         uint64_t yCoeff      __attribute__((aligned(8)));
 137         uint64_t vrCoeff     __attribute__((aligned(8)));
 138         uint64_t ubCoeff     __attribute__((aligned(8)));
 139         uint64_t vgCoeff     __attribute__((aligned(8)));
 140         uint64_t ugCoeff     __attribute__((aligned(8)));
 141         uint64_t yOffset     __attribute__((aligned(8)));
 142         uint64_t uOffset     __attribute__((aligned(8)));
 143         uint64_t vOffset     __attribute__((aligned(8)));
 144         int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
 145         int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
 146         int dstW;
 147         uint64_t esp __attribute__((aligned(8)));
 148         uint64_t vRounder     __attribute__((aligned(8)));
 149         uint64_t u_temp       __attribute__((aligned(8)));
 150         uint64_t v_temp       __attribute__((aligned(8)));
 151
 152 #ifdef HAVE_ALTIVEC
 153
 154   vector signed short   CY;
 155   vector signed short   CRV;
 156   vector signed short   CBU;
 157   vector signed short   CGU;
 158   vector signed short   CGV;
 159   vector signed short   OY;
 160   vector unsigned short CSHIFT;
 161   vector signed short *vYCoeffsBank, *vCCoeffsBank;
 162
 163 #endif
 164
 165 } SwsContext;
 166 //FIXME check init (where 0)
 167
 168 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c);
 169 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
 170
 171 char *sws_format_name(int format);
 172
 173 //FIXME replace this with something faster
 174 #define isPlanarYUV(x) ((x)==PIX_FMT_YUV410P || (x)==PIX_FMT_YUV420P    \
 175                         || (x)==PIX_FMT_YUV411P || (x)==PIX_FMT_YUV422P \
 176                         || (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_NV12    \
 177                         || (x)==PIX_FMT_NV21)
 178 #define isYUV(x)       ((x)==PIX_FMT_UYVY422 || (x)==PIX_FMT_YUYV422 || isPlanarYUV(x))
 179 #define isGray(x)      ((x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE)
 180 #define isGray16(x)    ((x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE)
 181 #define isRGB(x)       ((x)==PIX_FMT_BGR32 || (x)==PIX_FMT_RGB24        \
 182                         || (x)==PIX_FMT_RGB565 || (x)==PIX_FMT_RGB555   \
 183                         || (x)==PIX_FMT_RGB8 || (x)==PIX_FMT_RGB4 || (x)==PIX_FMT_RGB4_BYTE     \
 184                         || (x)==PIX_FMT_MONOBLACK)
 185 #define isBGR(x)       ((x)==PIX_FMT_RGB32 || (x)==PIX_FMT_BGR24        \
 186                         || (x)==PIX_FMT_BGR565 || (x)==PIX_FMT_BGR555   \
 187                         || (x)==PIX_FMT_BGR8 || (x)==PIX_FMT_BGR4 || (x)==PIX_FMT_BGR4_BYTE     \
 188                         || (x)==PIX_FMT_MONOBLACK)
 189
 190 static inline int fmt_depth(int fmt)
 191 {
 192     switch(fmt) {
 193         case PIX_FMT_BGRA:
 194         case PIX_FMT_ABGR:
 195         case PIX_FMT_RGBA:
 196         case PIX_FMT_ARGB:
 197             return 32;
 198         case PIX_FMT_BGR24:
 199         case PIX_FMT_RGB24:
 200             return 24;
 201         case PIX_FMT_BGR565:
 202         case PIX_FMT_RGB565:
 203         case PIX_FMT_GRAY16BE:
 204         case PIX_FMT_GRAY16LE:
 205             return 16;
 206         case PIX_FMT_BGR555:
 207         case PIX_FMT_RGB555:
 208             return 15;
 209         case PIX_FMT_BGR8:
 210         case PIX_FMT_RGB8:
 211             return 8;
 212         case PIX_FMT_BGR4:
 213         case PIX_FMT_RGB4:
 214         case PIX_FMT_BGR4_BYTE:
 215         case PIX_FMT_RGB4_BYTE:
 216             return 4;
 217         case PIX_FMT_MONOBLACK:
 218             return 1;
 219         default:
 220             return 0;
 221     }
 222 }
 223
 224 #endif