ffmpeg/libswscale/rgb2rgb.c

   1 /*
   2  * software RGB to RGB converter
   3  * pluralize by software PAL8 to RGB converter
   4  *              software YUV to YUV converter
   5  *              software YUV to RGB converter
   6  * Written by Nick Kurshev.
   7  * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
   8  *
   9  * This file is part of FFmpeg.
  10  *
  11  * FFmpeg is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * FFmpeg is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with FFmpeg; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  24  */
  25
  26 #include <inttypes.h>
  27
  28 #include "libavutil/attributes.h"
  29 #include "libavutil/bswap.h"
  30 #include "config.h"
  31 #include "rgb2rgb.h"
  32 #include "swscale.h"
  33 #include "swscale_internal.h"
  34
  35 void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
  36 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
  37 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
  38 void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, int src_size);
  39 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
  40 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
  41 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
  42 void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
  43 void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
  44
  45 void (*rgb32to16)(const uint8_t *src, uint8_t *dst, int src_size);
  46 void (*rgb32to15)(const uint8_t *src, uint8_t *dst, int src_size);
  47 void (*rgb24to16)(const uint8_t *src, uint8_t *dst, int src_size);
  48 void (*rgb24to15)(const uint8_t *src, uint8_t *dst, int src_size);
  49 void (*rgb16to32)(const uint8_t *src, uint8_t *dst, int src_size);
  50 void (*rgb16to15)(const uint8_t *src, uint8_t *dst, int src_size);
  51 void (*rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size);
  52 void (*rgb15to32)(const uint8_t *src, uint8_t *dst, int src_size);
  53
  54 void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);
  55
  56 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
  57                    const uint8_t *vsrc, uint8_t *dst,
  58                    int width, int height,
  59                    int lumStride, int chromStride, int dstStride);
  60 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc,
  61                    const uint8_t *vsrc, uint8_t *dst,
  62                    int width, int height,
  63                    int lumStride, int chromStride, int dstStride);
  64 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
  65                       const uint8_t *vsrc, uint8_t *dst,
  66                       int width, int height,
  67                       int lumStride, int chromStride, int dstStride);
  68 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc,
  69                       const uint8_t *vsrc, uint8_t *dst,
  70                       int width, int height,
  71                       int lumStride, int chromStride, int dstStride);
  72 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst,
  73                    uint8_t *udst, uint8_t *vdst,
  74                    int width, int height,
  75                    int lumStride, int chromStride, int srcStride);
  76 void (*ff_rgb24toyv12)(const uint8_t *src, uint8_t *ydst,
  77                        uint8_t *udst, uint8_t *vdst,
  78                        int width, int height,
  79                        int lumStride, int chromStride, int srcStride,
  80                        int32_t *rgb2yuv);
  81 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
  82                  int srcStride, int dstStride);
  83 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
  84                         int width, int height, int src1Stride,
  85                         int src2Stride, int dstStride);
  86 void (*deinterleaveBytes)(const uint8_t *src, uint8_t *dst1, uint8_t *dst2,
  87                           int width, int height, int srcStride,
  88                           int dst1Stride, int dst2Stride);
  89 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
  90                     uint8_t *dst1, uint8_t *dst2,
  91                     int width, int height,
  92                     int srcStride1, int srcStride2,
  93                     int dstStride1, int dstStride2);
  94 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2,
  95                      const uint8_t *src3, uint8_t *dst,
  96                      int width, int height,
  97                      int srcStride1, int srcStride2,
  98                      int srcStride3, int dstStride);
  99 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 100                      const uint8_t *src, int width, int height,
 101                      int lumStride, int chromStride, int srcStride);
 102 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 103                      const uint8_t *src, int width, int height,
 104                      int lumStride, int chromStride, int srcStride);
 105 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 106                      const uint8_t *src, int width, int height,
 107                      int lumStride, int chromStride, int srcStride);
 108 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 109                      const uint8_t *src, int width, int height,
 110                      int lumStride, int chromStride, int srcStride);
 111
 112 #define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
 113 #define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
 114 #define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
 115 #define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
 116 #define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
 117 #define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
 118 #define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
 119 #define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
 120 #define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))
 121
 122 //plain C versions
 123 #include "rgb2rgb_template.c"
 124
 125 /*
 126  * RGB15->RGB16 original by Strepto/Astral
 127  * ported to gcc & bugfixed : A'rpi
 128  * MMXEXT, 3DNOW optimization by Nick Kurshev
 129  * 32-bit C version, and and&add trick by Michael Niedermayer
 130  */
 131
 132 av_cold void sws_rgb2rgb_init(void)
 133 {
 134     rgb2rgb_init_c();
 135     if (ARCH_X86)
 136         rgb2rgb_init_x86();
 137 }
 138
 139 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
 140 {
 141     int i, num_pixels = src_size >> 2;
 142
 143     for (i = 0; i < num_pixels; i++) {
 144 #if HAVE_BIGENDIAN
 145         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
 146         dst[3 * i + 0] = src[4 * i + 1];
 147         dst[3 * i + 1] = src[4 * i + 2];
 148         dst[3 * i + 2] = src[4 * i + 3];
 149 #else
 150         dst[3 * i + 0] = src[4 * i + 2];
 151         dst[3 * i + 1] = src[4 * i + 1];
 152         dst[3 * i + 2] = src[4 * i + 0];
 153 #endif
 154     }
 155 }
 156
 157 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
 158 {
 159     int i;
 160
 161     for (i = 0; 3 * i < src_size; i++) {
 162 #if HAVE_BIGENDIAN
 163         /* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
 164         dst[4 * i + 0] = 255;
 165         dst[4 * i + 1] = src[3 * i + 0];
 166         dst[4 * i + 2] = src[3 * i + 1];
 167         dst[4 * i + 3] = src[3 * i + 2];
 168 #else
 169         dst[4 * i + 0] = src[3 * i + 2];
 170         dst[4 * i + 1] = src[3 * i + 1];
 171         dst[4 * i + 2] = src[3 * i + 0];
 172         dst[4 * i + 3] = 255;
 173 #endif
 174     }
 175 }
 176
 177 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
 178 {
 179     uint8_t *d          = dst;
 180     const uint16_t *s   = (const uint16_t *)src;
 181     const uint16_t *end = s + src_size / 2;
 182
 183     while (s < end) {
 184         register uint16_t bgr = *s++;
 185 #if HAVE_BIGENDIAN
 186         *d++ = 255;
 187         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 188         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
 189         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 190 #else
 191         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 192         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
 193         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 194         *d++ = 255;
 195 #endif
 196     }
 197 }
 198
 199 void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
 200 {
 201     uint16_t rgb, r, g, b;
 202     uint16_t *d         = (uint16_t *)dst;
 203     const uint16_t *s   = (const uint16_t *)src;
 204     const uint16_t *end = s + src_size / 2;
 205
 206     while (s < end) {
 207         rgb  = *s++;
 208         r    = rgb & 0xF00;
 209         g    = rgb & 0x0F0;
 210         b    = rgb & 0x00F;
 211         r    = (r << 3) | ((r & 0x800) >> 1);
 212         g    = (g << 2) | ((g & 0x080) >> 2);
 213         b    = (b << 1) | ( b          >> 3);
 214         *d++ = r | g | b;
 215     }
 216 }
 217
 218 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
 219 {
 220     uint8_t *d          = dst;
 221     const uint16_t *s   = (const uint16_t *)src;
 222     const uint16_t *end = s + src_size / 2;
 223
 224     while (s < end) {
 225         register uint16_t bgr = *s++;
 226         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 227         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
 228         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 229     }
 230 }
 231
 232 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
 233 {
 234     int i, num_pixels = src_size >> 1;
 235
 236     for (i = 0; i < num_pixels; i++) {
 237         unsigned rgb         = ((const uint16_t *)src)[i];
 238         ((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
 239     }
 240 }
 241
 242 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
 243 {
 244     int i, num_pixels = src_size >> 1;
 245
 246     for (i = 0; i < num_pixels; i++) {
 247         unsigned rgb         = ((const uint16_t *)src)[i];
 248         ((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
 249     }
 250 }
 251
 252 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
 253 {
 254     uint8_t *d          = dst;
 255     const uint16_t *s   = (const uint16_t *)src;
 256     const uint16_t *end = s + src_size / 2;
 257
 258     while (s < end) {
 259         register uint16_t bgr = *s++;
 260 #if HAVE_BIGENDIAN
 261         *d++ = 255;
 262         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 263         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
 264         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
 265 #else
 266         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
 267         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
 268         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 269         *d++ = 255;
 270 #endif
 271     }
 272 }
 273
 274 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
 275 {
 276     uint8_t *d          = dst;
 277     const uint16_t *s   = (const uint16_t *)src;
 278     const uint16_t *end = s + src_size / 2;
 279
 280     while (s < end) {
 281         register uint16_t bgr = *s++;
 282         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
 283         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
 284         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 285     }
 286 }
 287
 288 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
 289 {
 290     int i, num_pixels = src_size >> 1;
 291
 292     for (i = 0; i < num_pixels; i++) {
 293         unsigned rgb         = ((const uint16_t *)src)[i];
 294         ((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
 295     }
 296 }
 297
 298 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
 299 {
 300     int i, num_pixels = src_size >> 1;
 301
 302     for (i = 0; i < num_pixels; i++) {
 303         unsigned rgb         = ((const uint16_t *)src)[i];
 304         unsigned br          = rgb & 0x7C1F;
 305         ((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
 306     }
 307 }
 308
 309 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
 310 {
 311     uint16_t *d = (uint16_t *)dst;
 312     uint16_t *s = (uint16_t *)src;
 313     int i, num_pixels = src_size >> 1;
 314
 315     for (i = 0; i < num_pixels; i++) {
 316         unsigned rgb = s[i];
 317         d[i]         = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
 318     }
 319 }
 320
 321
 322 #define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
 323 void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src,             \
 324                                         uint8_t *dst, int src_size)     \
 325 {                                                                       \
 326     int i;                                                              \
 327                                                                         \
 328     for (i = 0; i < src_size; i += 4) {                                 \
 329         dst[i + 0] = src[i + a];                                        \
 330         dst[i + 1] = src[i + b];                                        \
 331         dst[i + 2] = src[i + c];                                        \
 332         dst[i + 3] = src[i + d];                                        \
 333     }                                                                   \
 334 }
 335
 336 DEFINE_SHUFFLE_BYTES(0, 3, 2, 1)
 337 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
 338 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
 339 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)
 340
 341 #define DEFINE_RGB48TOBGR48(need_bswap, swap)                           \
 342 void rgb48tobgr48_ ## need_bswap(const uint8_t *src,                    \
 343                                  uint8_t *dst, int src_size)            \
 344 {                                                                       \
 345     uint16_t *d = (uint16_t *)dst;                                      \
 346     uint16_t *s = (uint16_t *)src;                                      \
 347     int i, num_pixels = src_size >> 1;                                  \
 348                                                                         \
 349     for (i = 0; i < num_pixels; i += 3) {                               \
 350         d[i    ] = swap ? av_bswap16(s[i + 2]) : s[i + 2];              \
 351         d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1];              \
 352         d[i + 2] = swap ? av_bswap16(s[i    ]) : s[i    ];              \
 353     }                                                                   \
 354 }
 355
 356 DEFINE_RGB48TOBGR48(nobswap, 0)
 357 DEFINE_RGB48TOBGR48(bswap, 1)
 358
 359 #define DEFINE_RGB64TOBGR48(need_bswap, swap)                           \
 360 void rgb64tobgr48_ ## need_bswap(const uint8_t *src,                    \
 361                                  uint8_t *dst, int src_size)            \
 362 {                                                                       \
 363     uint16_t *d = (uint16_t *)dst;                                      \
 364     uint16_t *s = (uint16_t *)src;                                      \
 365     int i, num_pixels = src_size >> 3;                                  \
 366                                                                         \
 367     for (i = 0; i < num_pixels; i++) {                                  \
 368         d[3 * i    ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
 369         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
 370         d[3 * i + 2] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
 371     }                                                                   \
 372 }
 373
 374 DEFINE_RGB64TOBGR48(nobswap, 0)
 375 DEFINE_RGB64TOBGR48(bswap, 1)
 376
 377 #define DEFINE_RGB64TO48(need_bswap, swap)                              \
 378 void rgb64to48_ ## need_bswap(const uint8_t *src,                       \
 379                               uint8_t *dst, int src_size)               \
 380 {                                                                       \
 381     uint16_t *d = (uint16_t *)dst;                                      \
 382     uint16_t *s = (uint16_t *)src;                                      \
 383     int i, num_pixels = src_size >> 3;                                  \
 384                                                                         \
 385     for (i = 0; i < num_pixels; i++) {                                  \
 386         d[3 * i    ] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
 387         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
 388         d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
 389     }                                                                   \
 390 }
 391
 392 DEFINE_RGB64TO48(nobswap, 0)
 393 DEFINE_RGB64TO48(bswap, 1)