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 SWSCALE_SWSCALE_INTERNAL_H
  22 #define SWSCALE_SWSCALE_INTERNAL_H
  23
  24 #include "config.h"
  25
  26 #if HAVE_ALTIVEC_H
  27 #include <altivec.h>
  28 #endif
  29
  30 #include "libavutil/avutil.h"
  31
  32 #define STR(s)         AV_TOSTRING(s) //AV_STRINGIFY is too long
  33
  34 #define MAX_FILTER_SIZE 256
  35
  36 #define VOFW 2048
  37 #define VOF  (VOFW*2)
  38
  39 #ifdef WORDS_BIGENDIAN
  40 #define ALT32_CORR (-1)
  41 #else
  42 #define ALT32_CORR   1
  43 #endif
  44
  45 #if ARCH_X86_64
  46 #   define APCK_PTR2 8
  47 #   define APCK_COEF 16
  48 #   define APCK_SIZE 24
  49 #else
  50 #   define APCK_PTR2 4
  51 #   define APCK_COEF 8
  52 #   define APCK_SIZE 16
  53 #endif
  54
  55 struct SwsContext;
  56
  57 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
  58              int srcSliceH, uint8_t* dst[], int dstStride[]);
  59
  60 /* This struct should be aligned on at least a 32-byte boundary. */
  61 typedef struct SwsContext{
  62     /**
  63      * info on struct for av_log
  64      */
  65     const AVClass *av_class;
  66
  67     /**
  68      * Note that src, dst, srcStride, dstStride will be copied in the
  69      * sws_scale() wrapper so they can be freely modified here.
  70      */
  71     SwsFunc swScale;
  72     int srcW, srcH, dstH;
  73     int chrSrcW, chrSrcH, chrDstW, chrDstH;
  74     int lumXInc, chrXInc;
  75     int lumYInc, chrYInc;
  76     enum PixelFormat dstFormat, srcFormat;  ///< format 4:2:0 type is always YV12
  77     int origDstFormat, origSrcFormat;       ///< format
  78     int chrSrcHSubSample, chrSrcVSubSample;
  79     int chrIntHSubSample, chrIntVSubSample;
  80     int chrDstHSubSample, chrDstVSubSample;
  81     int vChrDrop;
  82     int sliceDir;
  83     double param[2];
  84
  85     uint32_t pal_yuv[256];
  86     uint32_t pal_rgb[256];
  87
  88     int16_t **lumPixBuf;
  89     int16_t **chrPixBuf;
  90     int16_t *hLumFilter;
  91     int16_t *hLumFilterPos;
  92     int16_t *hChrFilter;
  93     int16_t *hChrFilterPos;
  94     int16_t *vLumFilter;
  95     int16_t *vLumFilterPos;
  96     int16_t *vChrFilter;
  97     int16_t *vChrFilterPos;
  98
  99     uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
 100
 101     int hLumFilterSize;
 102     int hChrFilterSize;
 103     int vLumFilterSize;
 104     int vChrFilterSize;
 105     int vLumBufSize;
 106     int vChrBufSize;
 107
 108     uint8_t *funnyYCode;
 109     uint8_t *funnyUVCode;
 110     int32_t *lumMmx2FilterPos;
 111     int32_t *chrMmx2FilterPos;
 112     int16_t *lumMmx2Filter;
 113     int16_t *chrMmx2Filter;
 114
 115     int canMMX2BeUsed;
 116
 117     int lastInLumBuf;
 118     int lastInChrBuf;
 119     int lumBufIndex;
 120     int chrBufIndex;
 121     int dstY;
 122     int flags;
 123     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
 124     uint8_t * table_rV[256];
 125     uint8_t * table_gU[256];
 126     int    table_gV[256];
 127     uint8_t * table_bU[256];
 128
 129     //Colorspace stuff
 130     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
 131     int srcColorspaceTable[4];
 132     int dstColorspaceTable[4];
 133     int srcRange, dstRange;
 134     int yuv2rgb_y_offset;
 135     int yuv2rgb_y_coeff;
 136     int yuv2rgb_v2r_coeff;
 137     int yuv2rgb_v2g_coeff;
 138     int yuv2rgb_u2g_coeff;
 139     int yuv2rgb_u2b_coeff;
 140
 141 #define RED_DITHER            "0*8"
 142 #define GREEN_DITHER          "1*8"
 143 #define BLUE_DITHER           "2*8"
 144 #define Y_COEFF               "3*8"
 145 #define VR_COEFF              "4*8"
 146 #define UB_COEFF              "5*8"
 147 #define VG_COEFF              "6*8"
 148 #define UG_COEFF              "7*8"
 149 #define Y_OFFSET              "8*8"
 150 #define U_OFFSET              "9*8"
 151 #define V_OFFSET              "10*8"
 152 #define LUM_MMX_FILTER_OFFSET "11*8"
 153 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
 154 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
 155 #define ESP_OFFSET            "11*8+4*4*256*2+8"
 156 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
 157 #define U_TEMP                "11*8+4*4*256*2+24"
 158 #define V_TEMP                "11*8+4*4*256*2+32"
 159
 160     uint64_t redDither   __attribute__((aligned(8)));
 161     uint64_t greenDither __attribute__((aligned(8)));
 162     uint64_t blueDither  __attribute__((aligned(8)));
 163
 164     uint64_t yCoeff      __attribute__((aligned(8)));
 165     uint64_t vrCoeff     __attribute__((aligned(8)));
 166     uint64_t ubCoeff     __attribute__((aligned(8)));
 167     uint64_t vgCoeff     __attribute__((aligned(8)));
 168     uint64_t ugCoeff     __attribute__((aligned(8)));
 169     uint64_t yOffset     __attribute__((aligned(8)));
 170     uint64_t uOffset     __attribute__((aligned(8)));
 171     uint64_t vOffset     __attribute__((aligned(8)));
 172     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
 173     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
 174     int dstW;
 175     uint64_t esp          __attribute__((aligned(8)));
 176     uint64_t vRounder     __attribute__((aligned(8)));
 177     uint64_t u_temp       __attribute__((aligned(8)));
 178     uint64_t v_temp       __attribute__((aligned(8)));
 179
 180 #if HAVE_ALTIVEC
 181
 182   vector signed short   CY;
 183   vector signed short   CRV;
 184   vector signed short   CBU;
 185   vector signed short   CGU;
 186   vector signed short   CGV;
 187   vector signed short   OY;
 188   vector unsigned short CSHIFT;
 189   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
 190
 191 #endif
 192
 193
 194 #if ARCH_BFIN
 195     uint32_t oy           __attribute__((aligned(4)));
 196     uint32_t oc           __attribute__((aligned(4)));
 197     uint32_t zero         __attribute__((aligned(4)));
 198     uint32_t cy           __attribute__((aligned(4)));
 199     uint32_t crv          __attribute__((aligned(4)));
 200     uint32_t rmask        __attribute__((aligned(4)));
 201     uint32_t cbu          __attribute__((aligned(4)));
 202     uint32_t bmask        __attribute__((aligned(4)));
 203     uint32_t cgu          __attribute__((aligned(4)));
 204     uint32_t cgv          __attribute__((aligned(4)));
 205     uint32_t gmask        __attribute__((aligned(4)));
 206 #endif
 207
 208 #if HAVE_VIS
 209     uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
 210 #endif
 211
 212 } SwsContext;
 213 //FIXME check init (where 0)
 214
 215 SwsFunc sws_yuv2rgb_get_func_ptr (SwsContext *c);
 216 int sws_yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
 217
 218 void sws_yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4],int brightness,int contrast, int saturation);
 219 SwsFunc sws_yuv2rgb_init_altivec (SwsContext *c);
 220 void altivec_yuv2packedX (SwsContext *c,
 221                           int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
 222                           int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
 223                           uint8_t *dest, int dstW, int dstY);
 224
 225 const char *sws_format_name(int format);
 226
 227 //FIXME replace this with something faster
 228 #define isPlanarYUV(x)  (           \
 229            (x)==PIX_FMT_YUV410P     \
 230         || (x)==PIX_FMT_YUV420P     \
 231         || (x)==PIX_FMT_YUVA420P    \
 232         || (x)==PIX_FMT_YUV411P     \
 233         || (x)==PIX_FMT_YUV422P     \
 234         || (x)==PIX_FMT_YUV444P     \
 235         || (x)==PIX_FMT_YUV440P     \
 236         || (x)==PIX_FMT_NV12        \
 237         || (x)==PIX_FMT_NV21        \
 238     )
 239 #define isYUV(x)        (           \
 240            (x)==PIX_FMT_UYVY422     \
 241         || (x)==PIX_FMT_YUYV422     \
 242         || isPlanarYUV(x)           \
 243     )
 244 #define isGray(x)       (           \
 245            (x)==PIX_FMT_GRAY8       \
 246         || (x)==PIX_FMT_GRAY16BE    \
 247         || (x)==PIX_FMT_GRAY16LE    \
 248     )
 249 #define isGray16(x)     (           \
 250            (x)==PIX_FMT_GRAY16BE    \
 251         || (x)==PIX_FMT_GRAY16LE    \
 252     )
 253 #define isRGB(x)        (           \
 254            (x)==PIX_FMT_RGB32       \
 255         || (x)==PIX_FMT_RGB32_1     \
 256         || (x)==PIX_FMT_RGB24       \
 257         || (x)==PIX_FMT_RGB565      \
 258         || (x)==PIX_FMT_RGB555      \
 259         || (x)==PIX_FMT_RGB8        \
 260         || (x)==PIX_FMT_RGB4        \
 261         || (x)==PIX_FMT_RGB4_BYTE   \
 262         || (x)==PIX_FMT_MONOBLACK   \
 263         || (x)==PIX_FMT_MONOWHITE   \
 264     )
 265 #define isBGR(x)        (           \
 266            (x)==PIX_FMT_BGR32       \
 267         || (x)==PIX_FMT_BGR32_1     \
 268         || (x)==PIX_FMT_BGR24       \
 269         || (x)==PIX_FMT_BGR565      \
 270         || (x)==PIX_FMT_BGR555      \
 271         || (x)==PIX_FMT_BGR8        \
 272         || (x)==PIX_FMT_BGR4        \
 273         || (x)==PIX_FMT_BGR4_BYTE   \
 274         || (x)==PIX_FMT_MONOBLACK   \
 275         || (x)==PIX_FMT_MONOWHITE   \
 276     )
 277 #define isALPHA(x)      (           \
 278            (x)==PIX_FMT_BGR32       \
 279         || (x)==PIX_FMT_BGR32_1     \
 280         || (x)==PIX_FMT_RGB32       \
 281         || (x)==PIX_FMT_RGB32_1     \
 282         || (x)==PIX_FMT_YUVA420P    \
 283     )
 284
 285 static inline int fmt_depth(int fmt)
 286 {
 287     switch(fmt) {
 288         case PIX_FMT_BGRA:
 289         case PIX_FMT_ABGR:
 290         case PIX_FMT_RGBA:
 291         case PIX_FMT_ARGB:
 292             return 32;
 293         case PIX_FMT_BGR24:
 294         case PIX_FMT_RGB24:
 295             return 24;
 296         case PIX_FMT_BGR565:
 297         case PIX_FMT_RGB565:
 298         case PIX_FMT_GRAY16BE:
 299         case PIX_FMT_GRAY16LE:
 300             return 16;
 301         case PIX_FMT_BGR555:
 302         case PIX_FMT_RGB555:
 303             return 15;
 304         case PIX_FMT_BGR8:
 305         case PIX_FMT_RGB8:
 306             return 8;
 307         case PIX_FMT_BGR4:
 308         case PIX_FMT_RGB4:
 309         case PIX_FMT_BGR4_BYTE:
 310         case PIX_FMT_RGB4_BYTE:
 311             return 4;
 312         case PIX_FMT_MONOBLACK:
 313         case PIX_FMT_MONOWHITE:
 314             return 1;
 315         default:
 316             return 0;
 317     }
 318 }
 319
 320 extern const uint64_t ff_dither4[2];
 321 extern const uint64_t ff_dither8[2];
 322
 323 extern const AVClass sws_context_class;
 324
 325 #endif /* SWSCALE_SWSCALE_INTERNAL_H */