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 **alpPixBuf;
  91     int16_t *hLumFilter;
  92     int16_t *hLumFilterPos;
  93     int16_t *hChrFilter;
  94     int16_t *hChrFilterPos;
  95     int16_t *vLumFilter;
  96     int16_t *vLumFilterPos;
  97     int16_t *vChrFilter;
  98     int16_t *vChrFilterPos;
  99
 100     uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
 101
 102     int hLumFilterSize;
 103     int hChrFilterSize;
 104     int vLumFilterSize;
 105     int vChrFilterSize;
 106     int vLumBufSize;
 107     int vChrBufSize;
 108
 109     uint8_t *funnyYCode;
 110     uint8_t *funnyUVCode;
 111     int32_t *lumMmx2FilterPos;
 112     int32_t *chrMmx2FilterPos;
 113     int16_t *lumMmx2Filter;
 114     int16_t *chrMmx2Filter;
 115
 116     int canMMX2BeUsed;
 117
 118     int lastInLumBuf;
 119     int lastInChrBuf;
 120     int lumBufIndex;
 121     int chrBufIndex;
 122     int dstY;
 123     int flags;
 124     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
 125     uint8_t * table_rV[256];
 126     uint8_t * table_gU[256];
 127     int    table_gV[256];
 128     uint8_t * table_bU[256];
 129
 130     //Colorspace stuff
 131     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
 132     int srcColorspaceTable[4];
 133     int dstColorspaceTable[4];
 134     int srcRange, dstRange;
 135     int yuv2rgb_y_offset;
 136     int yuv2rgb_y_coeff;
 137     int yuv2rgb_v2r_coeff;
 138     int yuv2rgb_v2g_coeff;
 139     int yuv2rgb_u2g_coeff;
 140     int yuv2rgb_u2b_coeff;
 141
 142 #define RED_DITHER            "0*8"
 143 #define GREEN_DITHER          "1*8"
 144 #define BLUE_DITHER           "2*8"
 145 #define Y_COEFF               "3*8"
 146 #define VR_COEFF              "4*8"
 147 #define UB_COEFF              "5*8"
 148 #define VG_COEFF              "6*8"
 149 #define UG_COEFF              "7*8"
 150 #define Y_OFFSET              "8*8"
 151 #define U_OFFSET              "9*8"
 152 #define V_OFFSET              "10*8"
 153 #define LUM_MMX_FILTER_OFFSET "11*8"
 154 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
 155 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
 156 #define ESP_OFFSET            "11*8+4*4*256*2+8"
 157 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
 158 #define U_TEMP                "11*8+4*4*256*2+24"
 159 #define V_TEMP                "11*8+4*4*256*2+32"
 160 #define Y_TEMP                "11*8+4*4*256*2+40"
 161 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
 162
 163     uint64_t redDither   __attribute__((aligned(8)));
 164     uint64_t greenDither __attribute__((aligned(8)));
 165     uint64_t blueDither  __attribute__((aligned(8)));
 166
 167     uint64_t yCoeff      __attribute__((aligned(8)));
 168     uint64_t vrCoeff     __attribute__((aligned(8)));
 169     uint64_t ubCoeff     __attribute__((aligned(8)));
 170     uint64_t vgCoeff     __attribute__((aligned(8)));
 171     uint64_t ugCoeff     __attribute__((aligned(8)));
 172     uint64_t yOffset     __attribute__((aligned(8)));
 173     uint64_t uOffset     __attribute__((aligned(8)));
 174     uint64_t vOffset     __attribute__((aligned(8)));
 175     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
 176     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
 177     int dstW;
 178     uint64_t esp          __attribute__((aligned(8)));
 179     uint64_t vRounder     __attribute__((aligned(8)));
 180     uint64_t u_temp       __attribute__((aligned(8)));
 181     uint64_t v_temp       __attribute__((aligned(8)));
 182     uint64_t y_temp       __attribute__((aligned(8)));
 183     int32_t  alpMmxFilter[4*MAX_FILTER_SIZE];
 184
 185 #if HAVE_ALTIVEC
 186
 187   vector signed short   CY;
 188   vector signed short   CRV;
 189   vector signed short   CBU;
 190   vector signed short   CGU;
 191   vector signed short   CGV;
 192   vector signed short   OY;
 193   vector unsigned short CSHIFT;
 194   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
 195
 196 #endif
 197
 198
 199 #if ARCH_BFIN
 200     uint32_t oy           __attribute__((aligned(4)));
 201     uint32_t oc           __attribute__((aligned(4)));
 202     uint32_t zero         __attribute__((aligned(4)));
 203     uint32_t cy           __attribute__((aligned(4)));
 204     uint32_t crv          __attribute__((aligned(4)));
 205     uint32_t rmask        __attribute__((aligned(4)));
 206     uint32_t cbu          __attribute__((aligned(4)));
 207     uint32_t bmask        __attribute__((aligned(4)));
 208     uint32_t cgu          __attribute__((aligned(4)));
 209     uint32_t cgv          __attribute__((aligned(4)));
 210     uint32_t gmask        __attribute__((aligned(4)));
 211 #endif
 212
 213 #if HAVE_VIS
 214     uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
 215 #endif
 216
 217 } SwsContext;
 218 //FIXME check init (where 0)
 219
 220 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
 221 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
 222
 223 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation);
 224 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
 225 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
 226 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
 227 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
 228 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
 229 void ff_bfin_get_unscaled_swscale(SwsContext *c);
 230 void ff_yuv2packedX_altivec(SwsContext *c,
 231                           int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
 232                           int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
 233                           uint8_t *dest, int dstW, int dstY);
 234
 235 const char *sws_format_name(int format);
 236
 237 //FIXME replace this with something faster
 238 #define isPlanarYUV(x)  (           \
 239            (x)==PIX_FMT_YUV410P     \
 240         || (x)==PIX_FMT_YUV420P     \
 241         || (x)==PIX_FMT_YUVA420P    \
 242         || (x)==PIX_FMT_YUV411P     \
 243         || (x)==PIX_FMT_YUV422P     \
 244         || (x)==PIX_FMT_YUV444P     \
 245         || (x)==PIX_FMT_YUV440P     \
 246         || (x)==PIX_FMT_NV12        \
 247         || (x)==PIX_FMT_NV21        \
 248     )
 249 #define isYUV(x)        (           \
 250            (x)==PIX_FMT_UYVY422     \
 251         || (x)==PIX_FMT_YUYV422     \
 252         || isPlanarYUV(x)           \
 253     )
 254 #define isGray(x)       (           \
 255            (x)==PIX_FMT_GRAY8       \
 256         || (x)==PIX_FMT_GRAY16BE    \
 257         || (x)==PIX_FMT_GRAY16LE    \
 258     )
 259 #define isGray16(x)     (           \
 260            (x)==PIX_FMT_GRAY16BE    \
 261         || (x)==PIX_FMT_GRAY16LE    \
 262     )
 263 #define isRGB(x)        (           \
 264            (x)==PIX_FMT_RGB32       \
 265         || (x)==PIX_FMT_RGB32_1     \
 266         || (x)==PIX_FMT_RGB24       \
 267         || (x)==PIX_FMT_RGB565      \
 268         || (x)==PIX_FMT_RGB555      \
 269         || (x)==PIX_FMT_RGB8        \
 270         || (x)==PIX_FMT_RGB4        \
 271         || (x)==PIX_FMT_RGB4_BYTE   \
 272         || (x)==PIX_FMT_MONOBLACK   \
 273         || (x)==PIX_FMT_MONOWHITE   \
 274     )
 275 #define isBGR(x)        (           \
 276            (x)==PIX_FMT_BGR32       \
 277         || (x)==PIX_FMT_BGR32_1     \
 278         || (x)==PIX_FMT_BGR24       \
 279         || (x)==PIX_FMT_BGR565      \
 280         || (x)==PIX_FMT_BGR555      \
 281         || (x)==PIX_FMT_BGR8        \
 282         || (x)==PIX_FMT_BGR4        \
 283         || (x)==PIX_FMT_BGR4_BYTE   \
 284         || (x)==PIX_FMT_MONOBLACK   \
 285         || (x)==PIX_FMT_MONOWHITE   \
 286     )
 287 #define isALPHA(x)      (           \
 288            (x)==PIX_FMT_BGR32       \
 289         || (x)==PIX_FMT_BGR32_1     \
 290         || (x)==PIX_FMT_RGB32       \
 291         || (x)==PIX_FMT_RGB32_1     \
 292         || (x)==PIX_FMT_YUVA420P    \
 293     )
 294
 295 static inline int fmt_depth(int fmt)
 296 {
 297     switch(fmt) {
 298         case PIX_FMT_BGRA:
 299         case PIX_FMT_ABGR:
 300         case PIX_FMT_RGBA:
 301         case PIX_FMT_ARGB:
 302             return 32;
 303         case PIX_FMT_BGR24:
 304         case PIX_FMT_RGB24:
 305             return 24;
 306         case PIX_FMT_BGR565:
 307         case PIX_FMT_RGB565:
 308         case PIX_FMT_GRAY16BE:
 309         case PIX_FMT_GRAY16LE:
 310             return 16;
 311         case PIX_FMT_BGR555:
 312         case PIX_FMT_RGB555:
 313             return 15;
 314         case PIX_FMT_BGR8:
 315         case PIX_FMT_RGB8:
 316             return 8;
 317         case PIX_FMT_BGR4:
 318         case PIX_FMT_RGB4:
 319         case PIX_FMT_BGR4_BYTE:
 320         case PIX_FMT_RGB4_BYTE:
 321             return 4;
 322         case PIX_FMT_MONOBLACK:
 323         case PIX_FMT_MONOWHITE:
 324             return 1;
 325         default:
 326             return 0;
 327     }
 328 }
 329
 330 extern const uint64_t ff_dither4[2];
 331 extern const uint64_t ff_dither8[2];
 332
 333 extern const AVClass sws_context_class;
 334
 335 #endif /* SWSCALE_SWSCALE_INTERNAL_H */