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 #if ARCH_X86
  37 #define VOFW 5120
  38 #else
  39 #define VOFW 2048 // faster on PPC and not tested on others
  40 #endif
  41
  42 #define VOF  (VOFW*2)
  43
  44 #ifdef WORDS_BIGENDIAN
  45 #define ALT32_CORR (-1)
  46 #else
  47 #define ALT32_CORR   1
  48 #endif
  49
  50 #if ARCH_X86_64
  51 #   define APCK_PTR2 8
  52 #   define APCK_COEF 16
  53 #   define APCK_SIZE 24
  54 #else
  55 #   define APCK_PTR2 4
  56 #   define APCK_COEF 8
  57 #   define APCK_SIZE 16
  58 #endif
  59
  60 struct SwsContext;
  61
  62 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[],
  63                        int srcStride[], int srcSliceY, int srcSliceH,
  64                        uint8_t* dst[], int dstStride[]);
  65
  66 /* This struct should be aligned on at least a 32-byte boundary. */
  67 typedef struct SwsContext{
  68     /**
  69      * info on struct for av_log
  70      */
  71     const AVClass *av_class;
  72
  73     /**
  74      * Note that src, dst, srcStride, dstStride will be copied in the
  75      * sws_scale() wrapper so they can be freely modified here.
  76      */
  77     SwsFunc swScale;
  78     int srcW, srcH, dstH;
  79     int chrSrcW, chrSrcH, chrDstW, chrDstH;
  80     int lumXInc, chrXInc;
  81     int lumYInc, chrYInc;
  82     enum PixelFormat dstFormat, srcFormat;  ///< format 4:2:0 type is always YV12
  83     int origDstFormat, origSrcFormat;       ///< format
  84     int chrSrcHSubSample, chrSrcVSubSample;
  85     int chrIntHSubSample, chrIntVSubSample;
  86     int chrDstHSubSample, chrDstVSubSample;
  87     int vChrDrop;
  88     int sliceDir;
  89     double param[2];
  90
  91     uint32_t pal_yuv[256];
  92     uint32_t pal_rgb[256];
  93
  94     int16_t **lumPixBuf;
  95     int16_t **chrPixBuf;
  96     int16_t **alpPixBuf;
  97     int16_t *hLumFilter;
  98     int16_t *hLumFilterPos;
  99     int16_t *hChrFilter;
 100     int16_t *hChrFilterPos;
 101     int16_t *vLumFilter;
 102     int16_t *vLumFilterPos;
 103     int16_t *vChrFilter;
 104     int16_t *vChrFilterPos;
 105
 106     uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
 107
 108     int hLumFilterSize;
 109     int hChrFilterSize;
 110     int vLumFilterSize;
 111     int vChrFilterSize;
 112     int vLumBufSize;
 113     int vChrBufSize;
 114
 115     uint8_t *funnyYCode;
 116     uint8_t *funnyUVCode;
 117     int32_t *lumMmx2FilterPos;
 118     int32_t *chrMmx2FilterPos;
 119     int16_t *lumMmx2Filter;
 120     int16_t *chrMmx2Filter;
 121
 122     int canMMX2BeUsed;
 123
 124     int lastInLumBuf;
 125     int lastInChrBuf;
 126     int lumBufIndex;
 127     int chrBufIndex;
 128     int dstY;
 129     int flags;
 130     void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
 131     uint8_t * table_rV[256];
 132     uint8_t * table_gU[256];
 133     int    table_gV[256];
 134     uint8_t * table_bU[256];
 135
 136     //Colorspace stuff
 137     int contrast, brightness, saturation;    // for sws_getColorspaceDetails
 138     int srcColorspaceTable[4];
 139     int dstColorspaceTable[4];
 140     int srcRange, dstRange;
 141     int yuv2rgb_y_offset;
 142     int yuv2rgb_y_coeff;
 143     int yuv2rgb_v2r_coeff;
 144     int yuv2rgb_v2g_coeff;
 145     int yuv2rgb_u2g_coeff;
 146     int yuv2rgb_u2b_coeff;
 147
 148 #define RED_DITHER            "0*8"
 149 #define GREEN_DITHER          "1*8"
 150 #define BLUE_DITHER           "2*8"
 151 #define Y_COEFF               "3*8"
 152 #define VR_COEFF              "4*8"
 153 #define UB_COEFF              "5*8"
 154 #define VG_COEFF              "6*8"
 155 #define UG_COEFF              "7*8"
 156 #define Y_OFFSET              "8*8"
 157 #define U_OFFSET              "9*8"
 158 #define V_OFFSET              "10*8"
 159 #define LUM_MMX_FILTER_OFFSET "11*8"
 160 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
 161 #define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
 162 #define ESP_OFFSET            "11*8+4*4*256*2+8"
 163 #define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
 164 #define U_TEMP                "11*8+4*4*256*2+24"
 165 #define V_TEMP                "11*8+4*4*256*2+32"
 166 #define Y_TEMP                "11*8+4*4*256*2+40"
 167 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
 168
 169     DECLARE_ALIGNED(8, uint64_t, redDither);
 170     DECLARE_ALIGNED(8, uint64_t, greenDither);
 171     DECLARE_ALIGNED(8, uint64_t, blueDither);
 172
 173     DECLARE_ALIGNED(8, uint64_t, yCoeff);
 174     DECLARE_ALIGNED(8, uint64_t, vrCoeff);
 175     DECLARE_ALIGNED(8, uint64_t, ubCoeff);
 176     DECLARE_ALIGNED(8, uint64_t, vgCoeff);
 177     DECLARE_ALIGNED(8, uint64_t, ugCoeff);
 178     DECLARE_ALIGNED(8, uint64_t, yOffset);
 179     DECLARE_ALIGNED(8, uint64_t, uOffset);
 180     DECLARE_ALIGNED(8, uint64_t, vOffset);
 181     int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
 182     int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
 183     int dstW;
 184     DECLARE_ALIGNED(8, uint64_t, esp);
 185     DECLARE_ALIGNED(8, uint64_t, vRounder);
 186     DECLARE_ALIGNED(8, uint64_t, u_temp);
 187     DECLARE_ALIGNED(8, uint64_t, v_temp);
 188     DECLARE_ALIGNED(8, uint64_t, y_temp);
 189     int32_t  alpMmxFilter[4*MAX_FILTER_SIZE];
 190
 191 #if HAVE_ALTIVEC
 192   vector signed short   CY;
 193   vector signed short   CRV;
 194   vector signed short   CBU;
 195   vector signed short   CGU;
 196   vector signed short   CGV;
 197   vector signed short   OY;
 198   vector unsigned short CSHIFT;
 199   vector signed short   *vYCoeffsBank, *vCCoeffsBank;
 200 #endif
 201
 202 #if ARCH_BFIN
 203     DECLARE_ALIGNED(4, uint32_t, oy);
 204     DECLARE_ALIGNED(4, uint32_t, oc);
 205     DECLARE_ALIGNED(4, uint32_t, zero);
 206     DECLARE_ALIGNED(4, uint32_t, cy);
 207     DECLARE_ALIGNED(4, uint32_t, crv);
 208     DECLARE_ALIGNED(4, uint32_t, rmask);
 209     DECLARE_ALIGNED(4, uint32_t, cbu);
 210     DECLARE_ALIGNED(4, uint32_t, bmask);
 211     DECLARE_ALIGNED(4, uint32_t, cgu);
 212     DECLARE_ALIGNED(4, uint32_t, cgv);
 213     DECLARE_ALIGNED(4, uint32_t, gmask);
 214 #endif
 215
 216 #if HAVE_VIS
 217     DECLARE_ALIGNED(8, uint64_t, sparc_coeffs[10]);
 218 #endif
 219
 220     /* function pointers for swScale() */
 221     void (*yuv2nv12X  )(struct SwsContext *c,
 222                         const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
 223                         const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
 224                         uint8_t *dest, uint8_t *uDest,
 225                         int dstW, int chrDstW, int dstFormat);
 226     void (*yuv2yuv1   )(struct SwsContext *c,
 227                         const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
 228                         uint8_t *dest,
 229                         uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
 230                         long dstW, long chrDstW);
 231     void (*yuv2yuvX   )(struct SwsContext *c,
 232                         const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
 233                         const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
 234                         const int16_t **alpSrc,
 235                         uint8_t *dest,
 236                         uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
 237                         long dstW, long chrDstW);
 238     void (*yuv2packed1)(struct SwsContext *c,
 239                         const uint16_t *buf0,
 240                         const uint16_t *uvbuf0, const uint16_t *uvbuf1,
 241                         const uint16_t *abuf0,
 242                         uint8_t *dest,
 243                         int dstW, int uvalpha, int dstFormat, int flags, int y);
 244     void (*yuv2packed2)(struct SwsContext *c,
 245                         const uint16_t *buf0, const uint16_t *buf1,
 246                         const uint16_t *uvbuf0, const uint16_t *uvbuf1,
 247                         const uint16_t *abuf0, const uint16_t *abuf1,
 248                         uint8_t *dest,
 249                         int dstW, int yalpha, int uvalpha, int y);
 250     void (*yuv2packedX)(struct SwsContext *c,
 251                         const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
 252                         const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
 253                         const int16_t **alpSrc, uint8_t *dest,
 254                         long dstW, long dstY);
 255
 256     void (*hyscale_internal)(uint8_t *dst, const uint8_t *src,
 257                              long width, uint32_t *pal);
 258     void (*hascale_internal)(uint8_t *dst, const uint8_t *src,
 259                              long width, uint32_t *pal);
 260     void (*hcscale_internal)(uint8_t *dstU, uint8_t *dstV,
 261                              const uint8_t *src1, const uint8_t *src2,
 262                              long width, uint32_t *pal);
 263     void (*hyscale_fast)(struct SwsContext *c,
 264                          int16_t *dst, int dstWidth,
 265                          const uint8_t *src, int srcW, int xInc);
 266     void (*hcscale_fast)(struct SwsContext *c,
 267                          int16_t *dst, int dstWidth,
 268                          const uint8_t *src1, const uint8_t *src2,
 269                          int srcW, int xInc);
 270
 271     void (*hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW,
 272                    int xInc, const int16_t *filter, const int16_t *filterPos,
 273                    long filterSize);
 274
 275 } SwsContext;
 276 //FIXME check init (where 0)
 277
 278 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
 279 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
 280                              int fullRange, int brightness,
 281                              int contrast, int saturation);
 282
 283 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
 284                                     int brightness, int contrast, int saturation);
 285 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
 286 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
 287 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
 288 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
 289 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
 290 void ff_bfin_get_unscaled_swscale(SwsContext *c);
 291 void ff_yuv2packedX_altivec(SwsContext *c,
 292                             const int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
 293                             const int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
 294                             uint8_t *dest, int dstW, int dstY);
 295
 296 const char *sws_format_name(int format);
 297
 298 //FIXME replace this with something faster
 299 #define is16BPS(x)      (           \
 300            (x)==PIX_FMT_GRAY16BE    \
 301         || (x)==PIX_FMT_GRAY16LE    \
 302         || (x)==PIX_FMT_RGB48BE     \
 303         || (x)==PIX_FMT_RGB48LE     \
 304         || (x)==PIX_FMT_YUV420PLE   \
 305         || (x)==PIX_FMT_YUV422PLE   \
 306         || (x)==PIX_FMT_YUV444PLE   \
 307         || (x)==PIX_FMT_YUV420PBE   \
 308         || (x)==PIX_FMT_YUV422PBE   \
 309         || (x)==PIX_FMT_YUV444PBE   \
 310     )
 311 #define isBE(x) ((x)&1)
 312 #define isPlanar8YUV(x) (           \
 313            (x)==PIX_FMT_YUV410P     \
 314         || (x)==PIX_FMT_YUV420P     \
 315         || (x)==PIX_FMT_YUVA420P    \
 316         || (x)==PIX_FMT_YUV411P     \
 317         || (x)==PIX_FMT_YUV422P     \
 318         || (x)==PIX_FMT_YUV444P     \
 319         || (x)==PIX_FMT_YUV440P     \
 320         || (x)==PIX_FMT_NV12        \
 321         || (x)==PIX_FMT_NV21        \
 322     )
 323 #define isPlanarYUV(x)  (           \
 324         isPlanar8YUV(x)             \
 325         || (x)==PIX_FMT_YUV420PLE   \
 326         || (x)==PIX_FMT_YUV422PLE   \
 327         || (x)==PIX_FMT_YUV444PLE   \
 328         || (x)==PIX_FMT_YUV420PBE   \
 329         || (x)==PIX_FMT_YUV422PBE   \
 330         || (x)==PIX_FMT_YUV444PBE   \
 331     )
 332 #define isYUV(x)        (           \
 333            (x)==PIX_FMT_UYVY422     \
 334         || (x)==PIX_FMT_YUYV422     \
 335         || isPlanarYUV(x)           \
 336     )
 337 #define isGray(x)       (           \
 338            (x)==PIX_FMT_GRAY8       \
 339         || (x)==PIX_FMT_GRAY16BE    \
 340         || (x)==PIX_FMT_GRAY16LE    \
 341     )
 342 #define isGray16(x)     (           \
 343            (x)==PIX_FMT_GRAY16BE    \
 344         || (x)==PIX_FMT_GRAY16LE    \
 345     )
 346 #define isRGB(x)        (           \
 347            (x)==PIX_FMT_RGB48BE     \
 348         || (x)==PIX_FMT_RGB48LE     \
 349         || (x)==PIX_FMT_RGB32       \
 350         || (x)==PIX_FMT_RGB32_1     \
 351         || (x)==PIX_FMT_RGB24       \
 352         || (x)==PIX_FMT_RGB565      \
 353         || (x)==PIX_FMT_RGB555      \
 354         || (x)==PIX_FMT_RGB8        \
 355         || (x)==PIX_FMT_RGB4        \
 356         || (x)==PIX_FMT_RGB4_BYTE   \
 357         || (x)==PIX_FMT_MONOBLACK   \
 358         || (x)==PIX_FMT_MONOWHITE   \
 359     )
 360 #define isBGR(x)        (           \
 361            (x)==PIX_FMT_BGR32       \
 362         || (x)==PIX_FMT_BGR32_1     \
 363         || (x)==PIX_FMT_BGR24       \
 364         || (x)==PIX_FMT_BGR565      \
 365         || (x)==PIX_FMT_BGR555      \
 366         || (x)==PIX_FMT_BGR8        \
 367         || (x)==PIX_FMT_BGR4        \
 368         || (x)==PIX_FMT_BGR4_BYTE   \
 369         || (x)==PIX_FMT_MONOBLACK   \
 370         || (x)==PIX_FMT_MONOWHITE   \
 371     )
 372 #define isALPHA(x)      (           \
 373            (x)==PIX_FMT_BGR32       \
 374         || (x)==PIX_FMT_BGR32_1     \
 375         || (x)==PIX_FMT_RGB32       \
 376         || (x)==PIX_FMT_RGB32_1     \
 377         || (x)==PIX_FMT_YUVA420P    \
 378     )
 379
 380 static inline int fmt_depth(int fmt)
 381 {
 382     switch(fmt) {
 383         case PIX_FMT_RGB48BE:
 384         case PIX_FMT_RGB48LE:
 385             return 48;
 386         case PIX_FMT_BGRA:
 387         case PIX_FMT_ABGR:
 388         case PIX_FMT_RGBA:
 389         case PIX_FMT_ARGB:
 390             return 32;
 391         case PIX_FMT_BGR24:
 392         case PIX_FMT_RGB24:
 393             return 24;
 394         case PIX_FMT_BGR565:
 395         case PIX_FMT_RGB565:
 396         case PIX_FMT_GRAY16BE:
 397         case PIX_FMT_GRAY16LE:
 398             return 16;
 399         case PIX_FMT_BGR555:
 400         case PIX_FMT_RGB555:
 401             return 15;
 402         case PIX_FMT_BGR8:
 403         case PIX_FMT_RGB8:
 404             return 8;
 405         case PIX_FMT_BGR4:
 406         case PIX_FMT_RGB4:
 407         case PIX_FMT_BGR4_BYTE:
 408         case PIX_FMT_RGB4_BYTE:
 409             return 4;
 410         case PIX_FMT_MONOBLACK:
 411         case PIX_FMT_MONOWHITE:
 412             return 1;
 413         default:
 414             return 0;
 415     }
 416 }
 417
 418 extern const uint64_t ff_dither4[2];
 419 extern const uint64_t ff_dither8[2];
 420
 421 extern const AVClass sws_context_class;
 422
 423 #endif /* SWSCALE_SWSCALE_INTERNAL_H */