swscale_internal.h 20.5 KB
Newer Older
1
/*
2 3
 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
 *
4
 * This file is part of Libav.
5
 *
6
 * Libav is free software; you can redistribute it and/or
7 8 9
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
10
 *
11
 * Libav is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * 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 Libav; if not, write to the Free Software
18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
 */
20

21 22
#ifndef SWSCALE_SWSCALE_INTERNAL_H
#define SWSCALE_SWSCALE_INTERNAL_H
23

24 25
#include "config.h"

26
#if HAVE_ALTIVEC_H
27 28 29
#include <altivec.h>
#endif

30
#include "libavutil/avutil.h"
31

Michael Niedermayer's avatar
Michael Niedermayer committed
32
#define STR(s)         AV_TOSTRING(s) //AV_STRINGIFY is too long
33

34 35
#define FAST_BGR2YV12 //use 7-bit instead of 15-bit coefficients

36 37
#define MAX_FILTER_SIZE 256

38 39 40 41 42 43
#if ARCH_X86
#define VOFW 5120
#else
#define VOFW 2048 // faster on PPC and not tested on others
#endif

Benoit Fouet's avatar
Benoit Fouet committed
44
#define VOF  (VOFW*2)
45

46
#if HAVE_BIGENDIAN
47 48 49
#define ALT32_CORR (-1)
#else
#define ALT32_CORR   1
50 51
#endif

52
#if ARCH_X86_64
53 54 55 56 57 58 59
#   define APCK_PTR2 8
#   define APCK_COEF 16
#   define APCK_SIZE 24
#else
#   define APCK_PTR2 4
#   define APCK_COEF 8
#   define APCK_SIZE 16
60 61
#endif

62 63
struct SwsContext;

64
typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
65 66
                       int srcStride[], int srcSliceY, int srcSliceH,
                       uint8_t* dst[], int dstStride[]);
67

68
/* This struct should be aligned on at least a 32-byte boundary. */
Ramiro Polla's avatar
Ramiro Polla committed
69
typedef struct SwsContext {
70 71 72
    /**
     * info on struct for av_log
     */
73
    const AVClass *av_class;
74 75

    /**
Diego Biurrun's avatar
Diego Biurrun committed
76 77
     * Note that src, dst, srcStride, dstStride will be copied in the
     * sws_scale() wrapper so they can be freely modified here.
78 79
     */
    SwsFunc swScale;
Ramiro Polla's avatar
Ramiro Polla committed
80 81 82 83 84 85 86
    int srcW;                     ///< Width  of source      luma/alpha planes.
    int srcH;                     ///< Height of source      luma/alpha planes.
    int dstH;                     ///< Height of destination luma/alpha planes.
    int chrSrcW;                  ///< Width  of source      chroma     planes.
    int chrSrcH;                  ///< Height of source      chroma     planes.
    int chrDstW;                  ///< Width  of destination chroma     planes.
    int chrDstH;                  ///< Height of destination chroma     planes.
87 88
    int lumXInc, chrXInc;
    int lumYInc, chrYInc;
Ramiro Polla's avatar
Ramiro Polla committed
89 90
    enum PixelFormat dstFormat;   ///< Destination pixel format.
    enum PixelFormat srcFormat;   ///< Source      pixel format.
91 92
    int dstFormatBpp;             ///< Number of bits per pixel of the destination pixel format.
    int srcFormatBpp;             ///< Number of bits per pixel of the source      pixel format.
93 94 95 96 97 98
    int chrSrcHSubSample;         ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source      image.
    int chrSrcVSubSample;         ///< Binary logarithm of vertical   subsampling factor between luma/alpha and chroma planes in source      image.
    int chrDstHSubSample;         ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
    int chrDstVSubSample;         ///< Binary logarithm of vertical   subsampling factor between luma/alpha and chroma planes in destination image.
    int vChrDrop;                 ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
    int sliceDir;                 ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
Ramiro Polla's avatar
Ramiro Polla committed
99
    double param[2];              ///< Input parameters for scaling algorithms that need them.
100

101 102 103
    uint32_t pal_yuv[256];
    uint32_t pal_rgb[256];

104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123
    /**
     * @name Scaled horizontal lines ring buffer.
     * The horizontal scaler keeps just enough scaled lines in a ring buffer
     * so they may be passed to the vertical scaler. The pointers to the
     * allocated buffers for each line are duplicated in sequence in the ring
     * buffer to simplify indexing and avoid wrapping around between lines
     * inside the vertical scaler code. The wrapping is done before the
     * vertical scaler is called.
     */
    //@{
    int16_t **lumPixBuf;          ///< Ring buffer for scaled horizontal luma   plane lines to be fed to the vertical scaler.
    int16_t **chrPixBuf;          ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
    int16_t **alpPixBuf;          ///< Ring buffer for scaled horizontal alpha  plane lines to be fed to the vertical scaler.
    int       vLumBufSize;        ///< Number of vertical luma/alpha lines allocated in the ring buffer.
    int       vChrBufSize;        ///< Number of vertical chroma     lines allocated in the ring buffer.
    int       lastInLumBuf;       ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
    int       lastInChrBuf;       ///< Last scaled horizontal chroma     line from source in the ring buffer.
    int       lumBufIndex;        ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
    int       chrBufIndex;        ///< Index in ring buffer of the last scaled horizontal chroma     line from source.
    //@}
124

125
    uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
126

127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
    /**
     * @name Horizontal and vertical filters.
     * To better understand the following fields, here is a pseudo-code of
     * their usage in filtering a horizontal line:
     * @code
     * for (i = 0; i < width; i++) {
     *     dst[i] = 0;
     *     for (j = 0; j < filterSize; j++)
     *         dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
     *     dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
     * }
     * @endcode
     */
    //@{
    int16_t *hLumFilter;          ///< Array of horizontal filter coefficients for luma/alpha planes.
    int16_t *hChrFilter;          ///< Array of horizontal filter coefficients for chroma     planes.
    int16_t *vLumFilter;          ///< Array of vertical   filter coefficients for luma/alpha planes.
    int16_t *vChrFilter;          ///< Array of vertical   filter coefficients for chroma     planes.
    int16_t *hLumFilterPos;       ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
    int16_t *hChrFilterPos;       ///< Array of horizontal filter starting positions for each dst[i] for chroma     planes.
    int16_t *vLumFilterPos;       ///< Array of vertical   filter starting positions for each dst[i] for luma/alpha planes.
    int16_t *vChrFilterPos;       ///< Array of vertical   filter starting positions for each dst[i] for chroma     planes.
    int      hLumFilterSize;      ///< Horizontal filter size for luma/alpha pixels.
    int      hChrFilterSize;      ///< Horizontal filter size for chroma     pixels.
    int      vLumFilterSize;      ///< Vertical   filter size for luma/alpha pixels.
    int      vChrFilterSize;      ///< Vertical   filter size for chroma     pixels.
    //@}
154

Ramiro Polla's avatar
Ramiro Polla committed
155 156 157 158
    int lumMmx2FilterCodeSize;    ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
    int chrMmx2FilterCodeSize;    ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma     planes.
    uint8_t *lumMmx2FilterCode;   ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
    uint8_t *chrMmx2FilterCode;   ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma     planes.
159 160 161

    int canMMX2BeUsed;

Ramiro Polla's avatar
Ramiro Polla committed
162 163
    int dstY;                     ///< Last destination vertical line output from last slice.
    int flags;                    ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
164 165 166 167 168 169 170 171 172 173
    void * yuvTable;            // pointer to the yuv->rgb table start so it can be freed()
    uint8_t * table_rV[256];
    uint8_t * table_gU[256];
    int    table_gV[256];
    uint8_t * table_bU[256];

    //Colorspace stuff
    int contrast, brightness, saturation;    // for sws_getColorspaceDetails
    int srcColorspaceTable[4];
    int dstColorspaceTable[4];
Ramiro Polla's avatar
Ramiro Polla committed
174 175
    int srcRange;                 ///< 0 = MPG YUV range, 1 = JPG YUV range (source      image).
    int dstRange;                 ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
176 177 178 179 180 181
    int yuv2rgb_y_offset;
    int yuv2rgb_y_coeff;
    int yuv2rgb_v2r_coeff;
    int yuv2rgb_v2g_coeff;
    int yuv2rgb_u2g_coeff;
    int yuv2rgb_u2b_coeff;
182 183 184 185 186 187 188 189 190 191 192 193

#define RED_DITHER            "0*8"
#define GREEN_DITHER          "1*8"
#define BLUE_DITHER           "2*8"
#define Y_COEFF               "3*8"
#define VR_COEFF              "4*8"
#define UB_COEFF              "5*8"
#define VG_COEFF              "6*8"
#define UG_COEFF              "7*8"
#define Y_OFFSET              "8*8"
#define U_OFFSET              "9*8"
#define V_OFFSET              "10*8"
194 195
#define LUM_MMX_FILTER_OFFSET "11*8"
#define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
196
#define DSTW_OFFSET           "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
197 198 199 200
#define ESP_OFFSET            "11*8+4*4*256*2+8"
#define VROUNDER_OFFSET       "11*8+4*4*256*2+16"
#define U_TEMP                "11*8+4*4*256*2+24"
#define V_TEMP                "11*8+4*4*256*2+32"
Cédric Schieli's avatar
Cédric Schieli committed
201 202
#define Y_TEMP                "11*8+4*4*256*2+40"
#define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
203

204 205 206 207 208 209 210 211 212 213 214 215
    DECLARE_ALIGNED(8, uint64_t, redDither);
    DECLARE_ALIGNED(8, uint64_t, greenDither);
    DECLARE_ALIGNED(8, uint64_t, blueDither);

    DECLARE_ALIGNED(8, uint64_t, yCoeff);
    DECLARE_ALIGNED(8, uint64_t, vrCoeff);
    DECLARE_ALIGNED(8, uint64_t, ubCoeff);
    DECLARE_ALIGNED(8, uint64_t, vgCoeff);
    DECLARE_ALIGNED(8, uint64_t, ugCoeff);
    DECLARE_ALIGNED(8, uint64_t, yOffset);
    DECLARE_ALIGNED(8, uint64_t, uOffset);
    DECLARE_ALIGNED(8, uint64_t, vOffset);
216 217
    int32_t  lumMmxFilter[4*MAX_FILTER_SIZE];
    int32_t  chrMmxFilter[4*MAX_FILTER_SIZE];
218
    int dstW;                     ///< Width  of destination luma/alpha planes.
219 220 221 222 223
    DECLARE_ALIGNED(8, uint64_t, esp);
    DECLARE_ALIGNED(8, uint64_t, vRounder);
    DECLARE_ALIGNED(8, uint64_t, u_temp);
    DECLARE_ALIGNED(8, uint64_t, v_temp);
    DECLARE_ALIGNED(8, uint64_t, y_temp);
Cédric Schieli's avatar
Cédric Schieli committed
224
    int32_t  alpMmxFilter[4*MAX_FILTER_SIZE];
225

226
#if HAVE_ALTIVEC
Ramiro Polla's avatar
Ramiro Polla committed
227 228 229 230 231 232 233 234
    vector signed short   CY;
    vector signed short   CRV;
    vector signed short   CBU;
    vector signed short   CGU;
    vector signed short   CGV;
    vector signed short   OY;
    vector unsigned short CSHIFT;
    vector signed short   *vYCoeffsBank, *vCCoeffsBank;
235 236
#endif

237
#if ARCH_BFIN
238 239 240 241 242 243 244 245 246 247 248
    DECLARE_ALIGNED(4, uint32_t, oy);
    DECLARE_ALIGNED(4, uint32_t, oc);
    DECLARE_ALIGNED(4, uint32_t, zero);
    DECLARE_ALIGNED(4, uint32_t, cy);
    DECLARE_ALIGNED(4, uint32_t, crv);
    DECLARE_ALIGNED(4, uint32_t, rmask);
    DECLARE_ALIGNED(4, uint32_t, cbu);
    DECLARE_ALIGNED(4, uint32_t, bmask);
    DECLARE_ALIGNED(4, uint32_t, cgu);
    DECLARE_ALIGNED(4, uint32_t, cgv);
    DECLARE_ALIGNED(4, uint32_t, gmask);
249 250
#endif

251
#if HAVE_VIS
252
    DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
Denes Balatoni's avatar
Denes Balatoni committed
253
#endif
254

255 256 257 258 259 260 261 262 263 264
    /* function pointers for swScale() */
    void (*yuv2nv12X  )(struct SwsContext *c,
                        const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                        const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                        uint8_t *dest, uint8_t *uDest,
                        int dstW, int chrDstW, int dstFormat);
    void (*yuv2yuv1   )(struct SwsContext *c,
                        const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
                        uint8_t *dest,
                        uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
265
                        long dstW, long chrDstW);
266 267 268 269 270 271
    void (*yuv2yuvX   )(struct SwsContext *c,
                        const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                        const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                        const int16_t **alpSrc,
                        uint8_t *dest,
                        uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
272
                        long dstW, long chrDstW);
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288
    void (*yuv2packed1)(struct SwsContext *c,
                        const uint16_t *buf0,
                        const uint16_t *uvbuf0, const uint16_t *uvbuf1,
                        const uint16_t *abuf0,
                        uint8_t *dest,
                        int dstW, int uvalpha, int dstFormat, int flags, int y);
    void (*yuv2packed2)(struct SwsContext *c,
                        const uint16_t *buf0, const uint16_t *buf1,
                        const uint16_t *uvbuf0, const uint16_t *uvbuf1,
                        const uint16_t *abuf0, const uint16_t *abuf1,
                        uint8_t *dest,
                        int dstW, int yalpha, int uvalpha, int y);
    void (*yuv2packedX)(struct SwsContext *c,
                        const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                        const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                        const int16_t **alpSrc, uint8_t *dest,
289
                        long dstW, long dstY);
290

291
    void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
292
                      long width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
293
    void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
294
                      long width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
295 296
    void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
                      const uint8_t *src1, const uint8_t *src2,
297
                      long width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
298
    void (*hyscale_fast)(struct SwsContext *c,
299
                         int16_t *dst, long dstWidth,
300 301
                         const uint8_t *src, int srcW, int xInc);
    void (*hcscale_fast)(struct SwsContext *c,
302
                         int16_t *dst, long dstWidth,
303 304
                         const uint8_t *src1, const uint8_t *src2,
                         int srcW, int xInc);
305 306

    void (*hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW,
307
                   int xInc, const int16_t *filter, const int16_t *filterPos,
308
                   long filterSize);
309

310 311 312
    void (*lumConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
    void (*chrConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for chroma planes if needed.

313 314 315 316
    int lumSrcOffset; ///< Offset given to luma src pointers passed to horizontal input functions.
    int chrSrcOffset; ///< Offset given to chroma src pointers passed to horizontal input functions.
    int alpSrcOffset; ///< Offset given to alpha src pointers passed to horizontal input functions.

317 318
    int needs_hcscale; ///< Set if there are chroma planes to be converted.

319 320 321
} SwsContext;
//FIXME check init (where 0)

322
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
323 324 325
int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
                             int fullRange, int brightness,
                             int contrast, int saturation);
326

327 328
void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
                                    int brightness, int contrast, int saturation);
Ramiro Polla's avatar
Ramiro Polla committed
329 330 331
SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
332
SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
Ramiro Polla's avatar
Ramiro Polla committed
333
SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
334
void ff_bfin_get_unscaled_swscale(SwsContext *c);
335
void ff_yuv2packedX_altivec(SwsContext *c,
336 337
                            const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                            const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
338
                            uint8_t *dest, int dstW, int dstY);
339

340
const char *sws_format_name(enum PixelFormat format);
341

342
//FIXME replace this with something faster
343 344 345
#define is16BPS(x)      (           \
           (x)==PIX_FMT_GRAY16BE    \
        || (x)==PIX_FMT_GRAY16LE    \
346 347
        || (x)==PIX_FMT_RGB48BE     \
        || (x)==PIX_FMT_RGB48LE     \
348 349 350 351 352 353
        || (x)==PIX_FMT_YUV420P16LE \
        || (x)==PIX_FMT_YUV422P16LE \
        || (x)==PIX_FMT_YUV444P16LE \
        || (x)==PIX_FMT_YUV420P16BE \
        || (x)==PIX_FMT_YUV422P16BE \
        || (x)==PIX_FMT_YUV444P16BE \
354
    )
Michael Niedermayer's avatar
Michael Niedermayer committed
355
#define isBE(x) ((x)&1)
356
#define isPlanar8YUV(x) (           \
357 358
           (x)==PIX_FMT_YUV410P     \
        || (x)==PIX_FMT_YUV420P     \
359
        || (x)==PIX_FMT_YUVA420P    \
360 361 362
        || (x)==PIX_FMT_YUV411P     \
        || (x)==PIX_FMT_YUV422P     \
        || (x)==PIX_FMT_YUV444P     \
Andreas Öman's avatar
Andreas Öman committed
363
        || (x)==PIX_FMT_YUV440P     \
364 365 366
        || (x)==PIX_FMT_NV12        \
        || (x)==PIX_FMT_NV21        \
    )
367 368
#define isPlanarYUV(x)  (           \
        isPlanar8YUV(x)             \
369 370 371 372 373 374
        || (x)==PIX_FMT_YUV420P16LE \
        || (x)==PIX_FMT_YUV422P16LE \
        || (x)==PIX_FMT_YUV444P16LE \
        || (x)==PIX_FMT_YUV420P16BE \
        || (x)==PIX_FMT_YUV422P16BE \
        || (x)==PIX_FMT_YUV444P16BE \
375
    )
376 377 378 379 380 381 382
#define isYUV(x)        (           \
           (x)==PIX_FMT_UYVY422     \
        || (x)==PIX_FMT_YUYV422     \
        || isPlanarYUV(x)           \
    )
#define isGray(x)       (           \
           (x)==PIX_FMT_GRAY8       \
383
        || (x)==PIX_FMT_Y400A      \
384 385 386 387 388 389 390
        || (x)==PIX_FMT_GRAY16BE    \
        || (x)==PIX_FMT_GRAY16LE    \
    )
#define isGray16(x)     (           \
           (x)==PIX_FMT_GRAY16BE    \
        || (x)==PIX_FMT_GRAY16LE    \
    )
391
#define isRGBinInt(x)   (           \
392 393 394
           (x)==PIX_FMT_RGB48BE     \
        || (x)==PIX_FMT_RGB48LE     \
        || (x)==PIX_FMT_RGB32       \
395
        || (x)==PIX_FMT_RGB32_1     \
396
        || (x)==PIX_FMT_RGB24       \
397 398 399 400
        || (x)==PIX_FMT_RGB565BE    \
        || (x)==PIX_FMT_RGB565LE    \
        || (x)==PIX_FMT_RGB555BE    \
        || (x)==PIX_FMT_RGB555LE    \
401 402
        || (x)==PIX_FMT_RGB444BE    \
        || (x)==PIX_FMT_RGB444LE    \
403 404 405 406
        || (x)==PIX_FMT_RGB8        \
        || (x)==PIX_FMT_RGB4        \
        || (x)==PIX_FMT_RGB4_BYTE   \
        || (x)==PIX_FMT_MONOBLACK   \
407
        || (x)==PIX_FMT_MONOWHITE   \
408
    )
409
#define isBGRinInt(x)   (           \
410
           (x)==PIX_FMT_BGR32       \
411
        || (x)==PIX_FMT_BGR32_1     \
412
        || (x)==PIX_FMT_BGR24       \
413 414 415 416
        || (x)==PIX_FMT_BGR565BE    \
        || (x)==PIX_FMT_BGR565LE    \
        || (x)==PIX_FMT_BGR555BE    \
        || (x)==PIX_FMT_BGR555LE    \
417 418
        || (x)==PIX_FMT_BGR444BE    \
        || (x)==PIX_FMT_BGR444LE    \
419 420 421 422
        || (x)==PIX_FMT_BGR8        \
        || (x)==PIX_FMT_BGR4        \
        || (x)==PIX_FMT_BGR4_BYTE   \
        || (x)==PIX_FMT_MONOBLACK   \
423
        || (x)==PIX_FMT_MONOWHITE   \
424
    )
425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440
#define isRGBinBytes(x) (           \
           (x)==PIX_FMT_RGB48BE     \
        || (x)==PIX_FMT_RGB48LE     \
        || (x)==PIX_FMT_RGBA        \
        || (x)==PIX_FMT_ARGB        \
        || (x)==PIX_FMT_RGB24       \
    )
#define isBGRinBytes(x) (           \
           (x)==PIX_FMT_BGRA        \
        || (x)==PIX_FMT_ABGR        \
        || (x)==PIX_FMT_BGR24       \
    )
#define isAnyRGB(x)     (           \
            isRGBinInt(x)           \
        ||  isBGRinInt(x)           \
    )
441 442 443 444 445
#define isALPHA(x)      (           \
           (x)==PIX_FMT_BGR32       \
        || (x)==PIX_FMT_BGR32_1     \
        || (x)==PIX_FMT_RGB32       \
        || (x)==PIX_FMT_RGB32_1     \
446
        || (x)==PIX_FMT_Y400A       \
447 448
        || (x)==PIX_FMT_YUVA420P    \
    )
449
#define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
450

451 452
extern const uint64_t ff_dither4[2];
extern const uint64_t ff_dither8[2];
453

454 455
extern const AVClass sws_context_class;

456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472
/**
 * Sets c->swScale to an unscaled converter if one exists for the specific
 * source and destination formats, bit depths, flags, etc.
 */
void ff_get_unscaled_swscale(SwsContext *c);

/**
 * Returns the SWS_CPU_CAPS for the optimized code compiled into swscale.
 */
int ff_hardcodedcpuflags(void);

/**
 * Returns function pointer to fastest main scaler path function depending
 * on architecture and available optimizations.
 */
SwsFunc ff_getSwsFunc(SwsContext *c);

473
#endif /* SWSCALE_SWSCALE_INTERNAL_H */