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_0321)(const uint8_t *src, uint8_t *dst, int src_size);
  55 void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);
  56 void (*shuffle_bytes_1230)(const uint8_t *src, uint8_t *dst, int src_size);
  57 void (*shuffle_bytes_3012)(const uint8_t *src, uint8_t *dst, int src_size);
  58 void (*shuffle_bytes_3210)(const uint8_t *src, uint8_t *dst, int src_size);
  59 void (*shuffle_bytes_3102)(const uint8_t *src, uint8_t *dst, int src_size);
  60 void (*shuffle_bytes_2013)(const uint8_t *src, uint8_t *dst, int src_size);
  61 void (*shuffle_bytes_2130)(const uint8_t *src, uint8_t *dst, int src_size);
  62 void (*shuffle_bytes_1203)(const uint8_t *src, uint8_t *dst, int src_size);
  63
  64
  65 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
  66                    const uint8_t *vsrc, uint8_t *dst,
  67                    int width, int height,
  68                    int lumStride, int chromStride, int dstStride);
  69 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc,
  70                    const uint8_t *vsrc, uint8_t *dst,
  71                    int width, int height,
  72                    int lumStride, int chromStride, int dstStride);
  73 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
  74                       const uint8_t *vsrc, uint8_t *dst,
  75                       int width, int height,
  76                       int lumStride, int chromStride, int dstStride);
  77 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc,
  78                       const uint8_t *vsrc, uint8_t *dst,
  79                       int width, int height,
  80                       int lumStride, int chromStride, int dstStride);
  81 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst,
  82                    uint8_t *udst, uint8_t *vdst,
  83                    int width, int height,
  84                    int lumStride, int chromStride, int srcStride);
  85 void (*ff_rgb24toyv12)(const uint8_t *src, uint8_t *ydst,
  86                        uint8_t *udst, uint8_t *vdst,
  87                        int width, int height,
  88                        int lumStride, int chromStride, int srcStride,
  89                        const int32_t *rgb2yuv);
  90 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
  91                  int srcStride, int dstStride);
  92 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
  93                         int width, int height, int src1Stride,
  94                         int src2Stride, int dstStride);
  95 void (*deinterleaveBytes)(const uint8_t *src, uint8_t *dst1, uint8_t *dst2,
  96                           int width, int height, int srcStride,
  97                           int dst1Stride, int dst2Stride);
  98 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
  99                     uint8_t *dst1, uint8_t *dst2,
 100                     int width, int height,
 101                     int srcStride1, int srcStride2,
 102                     int dstStride1, int dstStride2);
 103 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2,
 104                      const uint8_t *src3, uint8_t *dst,
 105                      int width, int height,
 106                      int srcStride1, int srcStride2,
 107                      int srcStride3, int dstStride);
 108 void (*uyvytoyuv420)(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 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 112                      const uint8_t *src, int width, int height,
 113                      int lumStride, int chromStride, int srcStride);
 114 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 115                      const uint8_t *src, int width, int height,
 116                      int lumStride, int chromStride, int srcStride);
 117 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
 118                      const uint8_t *src, int width, int height,
 119                      int lumStride, int chromStride, int srcStride);
 120
 121 #define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
 122 #define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
 123 #define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
 124 #define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
 125 #define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
 126 #define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
 127 #define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
 128 #define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
 129 #define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))
 130
 131 //plain C versions
 132 #include "rgb2rgb_template.c"
 133
 134 /*
 135  * RGB15->RGB16 original by Strepto/Astral
 136  * ported to gcc & bugfixed : A'rpi
 137  * MMXEXT, 3DNOW optimization by Nick Kurshev
 138  * 32-bit C version, and and&add trick by Michael Niedermayer
 139  */
 140
 141 av_cold void ff_sws_rgb2rgb_init(void)
 142 {
 143     rgb2rgb_init_c();
 144 #if ARCH_AARCH64
 145     rgb2rgb_init_aarch64();
 146 #elif ARCH_RISCV
 147     rgb2rgb_init_riscv();
 148 #elif ARCH_X86
 149     rgb2rgb_init_x86();
 150 #elif ARCH_LOONGARCH64
 151     rgb2rgb_init_loongarch();
 152 #endif
 153 }
 154
 155 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
 156 {
 157     int i, num_pixels = src_size >> 2;
 158
 159     for (i = 0; i < num_pixels; i++) {
 160 #if HAVE_BIGENDIAN
 161         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
 162         dst[3 * i + 0] = src[4 * i + 1];
 163         dst[3 * i + 1] = src[4 * i + 2];
 164         dst[3 * i + 2] = src[4 * i + 3];
 165 #else
 166         dst[3 * i + 0] = src[4 * i + 2];
 167         dst[3 * i + 1] = src[4 * i + 1];
 168         dst[3 * i + 2] = src[4 * i + 0];
 169 #endif
 170     }
 171 }
 172
 173 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
 174 {
 175     int i;
 176
 177     for (i = 0; 3 * i < src_size; i++) {
 178 #if HAVE_BIGENDIAN
 179         /* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
 180         dst[4 * i + 0] = 255;
 181         dst[4 * i + 1] = src[3 * i + 0];
 182         dst[4 * i + 2] = src[3 * i + 1];
 183         dst[4 * i + 3] = src[3 * i + 2];
 184 #else
 185         dst[4 * i + 0] = src[3 * i + 2];
 186         dst[4 * i + 1] = src[3 * i + 1];
 187         dst[4 * i + 2] = src[3 * i + 0];
 188         dst[4 * i + 3] = 255;
 189 #endif
 190     }
 191 }
 192
 193 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
 194 {
 195     uint8_t *d          = dst;
 196     const uint16_t *s   = (const uint16_t *)src;
 197     const uint16_t *end = s + src_size / 2;
 198
 199     while (s < end) {
 200         register uint16_t bgr = *s++;
 201 #if HAVE_BIGENDIAN
 202         *d++ = 255;
 203         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 204         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
 205         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 206 #else
 207         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 208         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
 209         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 210         *d++ = 255;
 211 #endif
 212     }
 213 }
 214
 215 void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
 216 {
 217     uint16_t rgb, r, g, b;
 218     uint16_t *d         = (uint16_t *)dst;
 219     const uint16_t *s   = (const uint16_t *)src;
 220     const uint16_t *end = s + src_size / 2;
 221
 222     while (s < end) {
 223         rgb  = *s++;
 224         r    = rgb & 0xF00;
 225         g    = rgb & 0x0F0;
 226         b    = rgb & 0x00F;
 227         r    = (r << 3) | ((r & 0x800) >> 1);
 228         g    = (g << 2) | ((g & 0x080) >> 2);
 229         b    = (b << 1) | ( b          >> 3);
 230         *d++ = r | g | b;
 231     }
 232 }
 233
 234 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
 235 {
 236     uint8_t *d          = dst;
 237     const uint16_t *s   = (const uint16_t *)src;
 238     const uint16_t *end = s + src_size / 2;
 239
 240     while (s < end) {
 241         register uint16_t bgr = *s++;
 242         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 243         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
 244         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 245     }
 246 }
 247
 248 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
 249 {
 250     int i, num_pixels = src_size >> 1;
 251
 252     for (i = 0; i < num_pixels; i++) {
 253         unsigned rgb         = ((const uint16_t *)src)[i];
 254         ((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
 255     }
 256 }
 257
 258 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
 259 {
 260     int i, num_pixels = src_size >> 1;
 261
 262     for (i = 0; i < num_pixels; i++) {
 263         unsigned rgb         = ((const uint16_t *)src)[i];
 264         ((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
 265     }
 266 }
 267
 268 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
 269 {
 270     uint8_t *d          = dst;
 271     const uint16_t *s   = (const uint16_t *)src;
 272     const uint16_t *end = s + src_size / 2;
 273
 274     while (s < end) {
 275         register uint16_t bgr = *s++;
 276 #if HAVE_BIGENDIAN
 277         *d++ = 255;
 278         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 279         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
 280         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
 281 #else
 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         *d++ = 255;
 286 #endif
 287     }
 288 }
 289
 290 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
 291 {
 292     uint8_t *d          = dst;
 293     const uint16_t *s   = (const uint16_t *)src;
 294     const uint16_t *end = s + src_size / 2;
 295
 296     while (s < end) {
 297         register uint16_t bgr = *s++;
 298         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
 299         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
 300         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
 301     }
 302 }
 303
 304 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
 305 {
 306     int i, num_pixels = src_size >> 1;
 307
 308     for (i = 0; i < num_pixels; i++) {
 309         unsigned rgb         = ((const uint16_t *)src)[i];
 310         ((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
 311     }
 312 }
 313
 314 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
 315 {
 316     int i, num_pixels = src_size >> 1;
 317
 318     for (i = 0; i < num_pixels; i++) {
 319         unsigned rgb         = ((const uint16_t *)src)[i];
 320         unsigned br          = rgb & 0x7C1F;
 321         ((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
 322     }
 323 }
 324
 325 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
 326 {
 327     uint16_t *d = (uint16_t *)dst;
 328     const uint16_t *s = (const uint16_t *)src;
 329     int i, num_pixels = src_size >> 1;
 330
 331     for (i = 0; i < num_pixels; i++) {
 332         unsigned rgb = s[i];
 333         d[i]         = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
 334     }
 335 }
 336
 337 #define DEFINE_RGB48TOBGR48(need_bswap, swap)                           \
 338 void rgb48tobgr48_ ## need_bswap(const uint8_t *src,                    \
 339                                  uint8_t *dst, int src_size)            \
 340 {                                                                       \
 341     uint16_t *d = (uint16_t *)dst;                                      \
 342     const uint16_t *s = (const uint16_t *)src;                          \
 343     int i, num_pixels = src_size >> 1;                                  \
 344                                                                         \
 345     for (i = 0; i < num_pixels; i += 3) {                               \
 346         d[i    ] = swap ? av_bswap16(s[i + 2]) : s[i + 2];              \
 347         d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1];              \
 348         d[i + 2] = swap ? av_bswap16(s[i    ]) : s[i    ];              \
 349     }                                                                   \
 350 }
 351
 352 DEFINE_RGB48TOBGR48(nobswap, 0)
 353 DEFINE_RGB48TOBGR48(bswap, 1)
 354
 355 #define DEFINE_RGB64TOBGR48(need_bswap, swap)                           \
 356 void rgb64tobgr48_ ## need_bswap(const uint8_t *src,                    \
 357                                  uint8_t *dst, int src_size)            \
 358 {                                                                       \
 359     uint16_t *d = (uint16_t *)dst;                                      \
 360     const uint16_t *s = (const uint16_t *)src;                          \
 361     int i, num_pixels = src_size >> 3;                                  \
 362                                                                         \
 363     for (i = 0; i < num_pixels; i++) {                                  \
 364         d[3 * i    ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
 365         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
 366         d[3 * i + 2] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
 367     }                                                                   \
 368 }
 369
 370 DEFINE_RGB64TOBGR48(nobswap, 0)
 371 DEFINE_RGB64TOBGR48(bswap, 1)
 372
 373 #define DEFINE_RGB64TO48(need_bswap, swap)                              \
 374 void rgb64to48_ ## need_bswap(const uint8_t *src,                       \
 375                               uint8_t *dst, int src_size)               \
 376 {                                                                       \
 377     uint16_t *d = (uint16_t *)dst;                                      \
 378     const uint16_t *s = (const uint16_t *)src;                          \
 379     int i, num_pixels = src_size >> 3;                                  \
 380                                                                         \
 381     for (i = 0; i < num_pixels; i++) {                                  \
 382         d[3 * i    ] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
 383         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
 384         d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
 385     }                                                                   \
 386 }
 387
 388 DEFINE_RGB64TO48(nobswap, 0)
 389 DEFINE_RGB64TO48(bswap, 1)
 390
 391 #define DEFINE_RGB48TOBGR64(need_bswap, swap)                           \
 392 void rgb48tobgr64_ ## need_bswap(const uint8_t *src,                    \
 393                                  uint8_t *dst, int src_size)            \
 394 {                                                                       \
 395     uint16_t *d = (uint16_t *)dst;                                      \
 396     const uint16_t *s = (const uint16_t *)src;                          \
 397     int i, num_pixels = src_size / 6;                                   \
 398                                                                         \
 399     for (i = 0; i < num_pixels; i++) {                                  \
 400         d[4 * i    ] = swap ? av_bswap16(s[3 * i + 2]) : s[3 * i + 2];  \
 401         d[4 * i + 1] = swap ? av_bswap16(s[3 * i + 1]) : s[3 * i + 1];  \
 402         d[4 * i + 2] = swap ? av_bswap16(s[3 * i    ]) : s[3 * i    ];  \
 403         d[4 * i + 3] = 0xFFFF;                                          \
 404     }                                                                   \
 405 }
 406
 407 DEFINE_RGB48TOBGR64(nobswap, 0)
 408 DEFINE_RGB48TOBGR64(bswap, 1)
 409
 410 #define DEFINE_RGB48TO64(need_bswap, swap)                              \
 411 void rgb48to64_ ## need_bswap(const uint8_t *src,                       \
 412                               uint8_t *dst, int src_size)               \
 413 {                                                                       \
 414     uint16_t *d = (uint16_t *)dst;                                      \
 415     const uint16_t *s = (const uint16_t *)src;                          \
 416     int i, num_pixels = src_size / 6;                                   \
 417                                                                         \
 418     for (i = 0; i < num_pixels; i++) {                                  \
 419         d[4 * i    ] = swap ? av_bswap16(s[3 * i    ]) : s[3 * i    ];  \
 420         d[4 * i + 1] = swap ? av_bswap16(s[3 * i + 1]) : s[3 * i + 1];  \
 421         d[4 * i + 2] = swap ? av_bswap16(s[3 * i + 2]) : s[3 * i + 2];  \
 422         d[4 * i + 3] = 0xFFFF;                                          \
 423     }                                                                   \
 424 }
 425
 426 DEFINE_RGB48TO64(nobswap, 0)
 427 DEFINE_RGB48TO64(bswap, 1)
 428
 429 #define DEFINE_X2RGB10TO16(need_bswap, swap, bits, alpha)                           \
 430 void x2rgb10to ## bits ## _ ## need_bswap(const uint8_t *src,                       \
 431                                              uint8_t *dst, int src_size)            \
 432 {                                                                                   \
 433     uint16_t *d = (uint16_t *)dst;                                                  \
 434     const uint32_t *s = (const uint32_t *)src;                                      \
 435     int i, num_pixels = src_size >> 2;                                              \
 436     unsigned component;                                                             \
 437                                                                                     \
 438     for (i = 0; i < num_pixels; i++) {                                              \
 439         unsigned p = AV_RL32(s + i);                                                \
 440         component = (p >> 20) & 0x3FF;                                              \
 441         d[(3 + alpha) * i + 0] = swap ? av_bswap16(component << 6 | component >> 4) \
 442                                       :            component << 6 | component >> 4; \
 443         component = (p >> 10) & 0x3FF;                                              \
 444         d[(3 + alpha) * i + 1] = swap ? av_bswap16(component << 6 | component >> 4) \
 445                                       :            component << 6 | component >> 4; \
 446         component =  p        & 0x3FF;                                              \
 447         d[(3 + alpha) * i + 2] = swap ? av_bswap16(component << 6 | component >> 4) \
 448                                       :            component << 6 | component >> 4; \
 449         if (alpha) d[(3 + alpha) * i + 3] = 0xffff;                                 \
 450     }                                                                               \
 451 }
 452
 453 DEFINE_X2RGB10TO16(nobswap, 0, 48, 0)
 454 DEFINE_X2RGB10TO16(bswap,   1, 48, 0)
 455 DEFINE_X2RGB10TO16(nobswap, 0, 64, 1)
 456 DEFINE_X2RGB10TO16(bswap,   1, 64, 1)
 457
 458 #define DEFINE_X2RGB10TOBGR16(need_bswap, swap, bits, alpha)                        \
 459 void x2rgb10tobgr ## bits ## _ ## need_bswap(const uint8_t *src,                    \
 460                                              uint8_t *dst, int src_size)            \
 461 {                                                                                   \
 462     uint16_t *d = (uint16_t *)dst;                                                  \
 463     const uint32_t *s = (const uint32_t *)src;                                      \
 464     int i, num_pixels = src_size >> 2;                                              \
 465     unsigned component;                                                             \
 466                                                                                     \
 467     for (i = 0; i < num_pixels; i++) {                                              \
 468         unsigned p = AV_RL32(s + i);                                                \
 469         component =  p        & 0x3FF;                                              \
 470         d[(3 + alpha) * i + 0] = swap ? av_bswap16(component << 6 | component >> 4) \
 471                                       :            component << 6 | component >> 4; \
 472         component = (p >> 10) & 0x3FF;                                              \
 473         d[(3 + alpha) * i + 1] = swap ? av_bswap16(component << 6 | component >> 4) \
 474                                       :            component << 6 | component >> 4; \
 475         component = (p >> 20) & 0x3FF;                                              \
 476         d[(3 + alpha) * i + 2] = swap ? av_bswap16(component << 6 | component >> 4) \
 477                                       :            component << 6 | component >> 4; \
 478         if (alpha) d[(3 + alpha) * i + 3] = 0xffff;                                 \
 479     }                                                                               \
 480 }
 481
 482 DEFINE_X2RGB10TOBGR16(nobswap, 0, 48, 0)
 483 DEFINE_X2RGB10TOBGR16(bswap,   1, 48, 0)
 484 DEFINE_X2RGB10TOBGR16(nobswap, 0, 64, 1)
 485 DEFINE_X2RGB10TOBGR16(bswap,   1, 64, 1)