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 modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (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
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * 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  * The C code (not assembly, MMX, ...) of this file can be used
  26  * under the LGPL license.
  27  */
  28 #include <inttypes.h>
  29 #include "config.h"
  30 #include "libavutil/x86_cpu.h"
  31 #include "libavutil/bswap.h"
  32 #include "rgb2rgb.h"
  33 #include "swscale.h"
  34 #include "swscale_internal.h"
  35
  36 #define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
  37
  38 void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
  39 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
  40 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
  41 void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
  42 void (*rgb32to16)(const uint8_t *src, uint8_t *dst, long src_size);
  43 void (*rgb32to15)(const uint8_t *src, uint8_t *dst, long src_size);
  44 void (*rgb15to16)(const uint8_t *src, uint8_t *dst, long src_size);
  45 void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
  46 void (*rgb15to32)(const uint8_t *src, uint8_t *dst, long src_size);
  47 void (*rgb16to15)(const uint8_t *src, uint8_t *dst, long src_size);
  48 void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
  49 void (*rgb16to32)(const uint8_t *src, uint8_t *dst, long src_size);
  50 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
  51 void (*rgb24to16)(const uint8_t *src, uint8_t *dst, long src_size);
  52 void (*rgb24to15)(const uint8_t *src, uint8_t *dst, long src_size);
  53 void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
  54 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
  55 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
  56
  57 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  58                    long width, long height,
  59                    long lumStride, long chromStride, long dstStride);
  60 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  61                    long width, long height,
  62                    long lumStride, long chromStride, long dstStride);
  63 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  64                       long width, long height,
  65                       long lumStride, long chromStride, long dstStride);
  66 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  67                       long width, long height,
  68                       long lumStride, long chromStride, long dstStride);
  69 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
  70                    long width, long height,
  71                    long lumStride, long chromStride, long srcStride);
  72 void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
  73                     long width, long height,
  74                     long lumStride, long chromStride, long srcStride);
  75 void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
  76                  long srcStride, long dstStride);
  77 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
  78                         long width, long height, long src1Stride,
  79                         long src2Stride, long dstStride);
  80 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
  81                     uint8_t *dst1, uint8_t *dst2,
  82                     long width, long height,
  83                     long srcStride1, long srcStride2,
  84                     long dstStride1, long dstStride2);
  85 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
  86                      uint8_t *dst,
  87                      long width, long height,
  88                      long srcStride1, long srcStride2,
  89                      long srcStride3, long dstStride);
  90 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
  91                      long width, long height,
  92                      long lumStride, long chromStride, long srcStride);
  93 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
  94                      long width, long height,
  95                      long lumStride, long chromStride, long srcStride);
  96 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
  97                      long width, long height,
  98                      long lumStride, long chromStride, long srcStride);
  99 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
 100                      long width, long height,
 101                      long lumStride, long chromStride, long srcStride);
 102
 103
 104 #if ARCH_X86 && CONFIG_GPL
 105 DECLARE_ASM_CONST(8, uint64_t, mmx_null)     = 0x0000000000000000ULL;
 106 DECLARE_ASM_CONST(8, uint64_t, mmx_one)      = 0xFFFFFFFFFFFFFFFFULL;
 107 DECLARE_ASM_CONST(8, uint64_t, mask32b)      = 0x000000FF000000FFULL;
 108 DECLARE_ASM_CONST(8, uint64_t, mask32g)      = 0x0000FF000000FF00ULL;
 109 DECLARE_ASM_CONST(8, uint64_t, mask32r)      = 0x00FF000000FF0000ULL;
 110 DECLARE_ASM_CONST(8, uint64_t, mask32a)      = 0xFF000000FF000000ULL;
 111 DECLARE_ASM_CONST(8, uint64_t, mask32)       = 0x00FFFFFF00FFFFFFULL;
 112 DECLARE_ASM_CONST(8, uint64_t, mask3216br)   = 0x00F800F800F800F8ULL;
 113 DECLARE_ASM_CONST(8, uint64_t, mask3216g)    = 0x0000FC000000FC00ULL;
 114 DECLARE_ASM_CONST(8, uint64_t, mask3215g)    = 0x0000F8000000F800ULL;
 115 DECLARE_ASM_CONST(8, uint64_t, mul3216)      = 0x2000000420000004ULL;
 116 DECLARE_ASM_CONST(8, uint64_t, mul3215)      = 0x2000000820000008ULL;
 117 DECLARE_ASM_CONST(8, uint64_t, mask24b)      = 0x00FF0000FF0000FFULL;
 118 DECLARE_ASM_CONST(8, uint64_t, mask24g)      = 0xFF0000FF0000FF00ULL;
 119 DECLARE_ASM_CONST(8, uint64_t, mask24r)      = 0x0000FF0000FF0000ULL;
 120 DECLARE_ASM_CONST(8, uint64_t, mask24l)      = 0x0000000000FFFFFFULL;
 121 DECLARE_ASM_CONST(8, uint64_t, mask24h)      = 0x0000FFFFFF000000ULL;
 122 DECLARE_ASM_CONST(8, uint64_t, mask24hh)     = 0xffff000000000000ULL;
 123 DECLARE_ASM_CONST(8, uint64_t, mask24hhh)    = 0xffffffff00000000ULL;
 124 DECLARE_ASM_CONST(8, uint64_t, mask24hhhh)   = 0xffffffffffff0000ULL;
 125 DECLARE_ASM_CONST(8, uint64_t, mask15b)      = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
 126 DECLARE_ASM_CONST(8, uint64_t, mask15rg)     = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
 127 DECLARE_ASM_CONST(8, uint64_t, mask15s)      = 0xFFE0FFE0FFE0FFE0ULL;
 128 DECLARE_ASM_CONST(8, uint64_t, mask15g)      = 0x03E003E003E003E0ULL;
 129 DECLARE_ASM_CONST(8, uint64_t, mask15r)      = 0x7C007C007C007C00ULL;
 130 #define mask16b mask15b
 131 DECLARE_ASM_CONST(8, uint64_t, mask16g)      = 0x07E007E007E007E0ULL;
 132 DECLARE_ASM_CONST(8, uint64_t, mask16r)      = 0xF800F800F800F800ULL;
 133 DECLARE_ASM_CONST(8, uint64_t, red_16mask)   = 0x0000f8000000f800ULL;
 134 DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
 135 DECLARE_ASM_CONST(8, uint64_t, blue_16mask)  = 0x0000001f0000001fULL;
 136 DECLARE_ASM_CONST(8, uint64_t, red_15mask)   = 0x00007c0000007c00ULL;
 137 DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
 138 DECLARE_ASM_CONST(8, uint64_t, blue_15mask)  = 0x0000001f0000001fULL;
 139 #endif /* ARCH_X86 */
 140
 141 #define RGB2YUV_SHIFT 8
 142 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
 143 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
 144 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
 145 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
 146 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
 147 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
 148 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
 149 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
 150 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
 151
 152 //Note: We have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW + MMX2 one.
 153 //plain C versions
 154 #undef HAVE_MMX
 155 #undef HAVE_MMX2
 156 #undef HAVE_AMD3DNOW
 157 #undef HAVE_SSE2
 158 #define HAVE_MMX 0
 159 #define HAVE_MMX2 0
 160 #define HAVE_AMD3DNOW 0
 161 #define HAVE_SSE2 0
 162 #define RENAME(a) a ## _C
 163 #include "rgb2rgb_template.c"
 164
 165 #if ARCH_X86 && CONFIG_GPL
 166
 167 //MMX versions
 168 #undef RENAME
 169 #undef HAVE_MMX
 170 #define HAVE_MMX 1
 171 #define RENAME(a) a ## _MMX
 172 #include "rgb2rgb_template.c"
 173
 174 //MMX2 versions
 175 #undef RENAME
 176 #undef HAVE_MMX2
 177 #define HAVE_MMX2 1
 178 #define RENAME(a) a ## _MMX2
 179 #include "rgb2rgb_template.c"
 180
 181 //3DNOW versions
 182 #undef RENAME
 183 #undef HAVE_MMX2
 184 #undef HAVE_AMD3DNOW
 185 #define HAVE_MMX2 0
 186 #define HAVE_AMD3DNOW 1
 187 #define RENAME(a) a ## _3DNOW
 188 #include "rgb2rgb_template.c"
 189
 190 #endif //ARCH_X86 || ARCH_X86_64
 191
 192 /*
 193  RGB15->RGB16 original by Strepto/Astral
 194  ported to gcc & bugfixed : A'rpi
 195  MMX2, 3DNOW optimization by Nick Kurshev
 196  32-bit C version, and and&add trick by Michael Niedermayer
 197 */
 198
 199 void sws_rgb2rgb_init(int flags)
 200 {
 201 #if (HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX)  && CONFIG_GPL
 202     if (flags & SWS_CPU_CAPS_MMX2)
 203         rgb2rgb_init_MMX2();
 204     else if (flags & SWS_CPU_CAPS_3DNOW)
 205         rgb2rgb_init_3DNOW();
 206     else if (flags & SWS_CPU_CAPS_MMX)
 207         rgb2rgb_init_MMX();
 208     else
 209 #endif /* HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX */
 210         rgb2rgb_init_C();
 211 }
 212
 213 /**
 214  * Convert the palette to the same packet 32-bit format as the palette
 215  */
 216 void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 217 {
 218     long i;
 219
 220     for (i=0; i<num_pixels; i++)
 221         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
 222 }
 223
 224 /**
 225  * Palette format: ABCD -> dst format: ABC
 226  */
 227 void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 228 {
 229     long i;
 230
 231     for (i=0; i<num_pixels; i++) {
 232         //FIXME slow?
 233         dst[0]= palette[src[i]*4+0];
 234         dst[1]= palette[src[i]*4+1];
 235         dst[2]= palette[src[i]*4+2];
 236         dst+= 3;
 237     }
 238 }
 239
 240 /**
 241  * Palette is assumed to contain BGR16, see rgb32to16 to convert the palette.
 242  */
 243 void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 244 {
 245     long i;
 246     for (i=0; i<num_pixels; i++)
 247         ((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
 248 }
 249 void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 250 {
 251     long i;
 252     for (i=0; i<num_pixels; i++)
 253         ((uint16_t *)dst)[i] = bswap_16(((const uint16_t *)palette)[src[i]]);
 254 }
 255
 256 /**
 257  * Palette is assumed to contain BGR15, see rgb32to15 to convert the palette.
 258  */
 259 void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 260 {
 261     long i;
 262     for (i=0; i<num_pixels; i++)
 263         ((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
 264 }
 265 void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 266 {
 267     long i;
 268     for (i=0; i<num_pixels; i++)
 269         ((uint16_t *)dst)[i] = bswap_16(((const uint16_t *)palette)[src[i]]);
 270 }
 271
 272 void rgb32to24(const uint8_t *src, uint8_t *dst, long src_size)
 273 {
 274     long i;
 275     long num_pixels = src_size >> 2;
 276     for (i=0; i<num_pixels; i++) {
 277 #if HAVE_BIGENDIAN
 278         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
 279         dst[3*i + 0] = src[4*i + 1];
 280         dst[3*i + 1] = src[4*i + 2];
 281         dst[3*i + 2] = src[4*i + 3];
 282 #else
 283         dst[3*i + 0] = src[4*i + 2];
 284         dst[3*i + 1] = src[4*i + 1];
 285         dst[3*i + 2] = src[4*i + 0];
 286 #endif
 287     }
 288 }
 289
 290 void rgb24to32(const uint8_t *src, uint8_t *dst, long src_size)
 291 {
 292     long i;
 293     for (i=0; 3*i<src_size; i++) {
 294 #if HAVE_BIGENDIAN
 295         /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
 296         dst[4*i + 0] = 255;
 297         dst[4*i + 1] = src[3*i + 0];
 298         dst[4*i + 2] = src[3*i + 1];
 299         dst[4*i + 3] = src[3*i + 2];
 300 #else
 301         dst[4*i + 0] = src[3*i + 2];
 302         dst[4*i + 1] = src[3*i + 1];
 303         dst[4*i + 2] = src[3*i + 0];
 304         dst[4*i + 3] = 255;
 305 #endif
 306     }
 307 }
 308
 309 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
 310 {
 311     const uint16_t *end;
 312     uint8_t *d = dst;
 313     const uint16_t *s = (const uint16_t *)src;
 314     end = s + src_size/2;
 315     while (s < end) {
 316         register uint16_t bgr;
 317         bgr = *s++;
 318 #if HAVE_BIGENDIAN
 319         *d++ = 255;
 320         *d++ = (bgr&0x1F)<<3;
 321         *d++ = (bgr&0x7E0)>>3;
 322         *d++ = (bgr&0xF800)>>8;
 323 #else
 324         *d++ = (bgr&0xF800)>>8;
 325         *d++ = (bgr&0x7E0)>>3;
 326         *d++ = (bgr&0x1F)<<3;
 327         *d++ = 255;
 328 #endif
 329     }
 330 }
 331
 332 void rgb16to24(const uint8_t *src, uint8_t *dst, long src_size)
 333 {
 334     const uint16_t *end;
 335     uint8_t *d = dst;
 336     const uint16_t *s = (const uint16_t *)src;
 337     end = s + src_size/2;
 338     while (s < end) {
 339         register uint16_t bgr;
 340         bgr = *s++;
 341         *d++ = (bgr&0xF800)>>8;
 342         *d++ = (bgr&0x7E0)>>3;
 343         *d++ = (bgr&0x1F)<<3;
 344     }
 345 }
 346
 347 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
 348 {
 349     long i;
 350     long num_pixels = src_size >> 1;
 351
 352     for (i=0; i<num_pixels; i++) {
 353         unsigned rgb = ((const uint16_t*)src)[i];
 354         ((uint16_t*)dst)[i] = (rgb>>11) | (rgb&0x7E0) | (rgb<<11);
 355     }
 356 }
 357
 358 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
 359 {
 360     long i;
 361     long num_pixels = src_size >> 1;
 362
 363     for (i=0; i<num_pixels; i++) {
 364         unsigned rgb = ((const uint16_t*)src)[i];
 365         ((uint16_t*)dst)[i] = (rgb>>11) | ((rgb&0x7C0)>>1) | ((rgb&0x1F)<<10);
 366     }
 367 }
 368
 369 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
 370 {
 371     const uint16_t *end;
 372     uint8_t *d = dst;
 373     const uint16_t *s = (const uint16_t *)src;
 374     end = s + src_size/2;
 375     while (s < end) {
 376         register uint16_t bgr;
 377         bgr = *s++;
 378 #if HAVE_BIGENDIAN
 379         *d++ = 255;
 380         *d++ = (bgr&0x1F)<<3;
 381         *d++ = (bgr&0x3E0)>>2;
 382         *d++ = (bgr&0x7C00)>>7;
 383 #else
 384         *d++ = (bgr&0x7C00)>>7;
 385         *d++ = (bgr&0x3E0)>>2;
 386         *d++ = (bgr&0x1F)<<3;
 387         *d++ = 255;
 388 #endif
 389     }
 390 }
 391
 392 void rgb15to24(const uint8_t *src, uint8_t *dst, long src_size)
 393 {
 394     const uint16_t *end;
 395     uint8_t *d = dst;
 396     const uint16_t *s = (const uint16_t *)src;
 397     end = s + src_size/2;
 398     while (s < end) {
 399         register uint16_t bgr;
 400         bgr = *s++;
 401         *d++ = (bgr&0x7C00)>>7;
 402         *d++ = (bgr&0x3E0)>>2;
 403         *d++ = (bgr&0x1F)<<3;
 404     }
 405 }
 406
 407 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
 408 {
 409     long i;
 410     long num_pixels = src_size >> 1;
 411
 412     for (i=0; i<num_pixels; i++) {
 413         unsigned rgb = ((const uint16_t*)src)[i];
 414         ((uint16_t*)dst)[i] = ((rgb&0x7C00)>>10) | ((rgb&0x3E0)<<1) | (rgb<<11);
 415     }
 416 }
 417
 418 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
 419 {
 420     long i;
 421     long num_pixels = src_size >> 1;
 422
 423     for (i=0; i<num_pixels; i++) {
 424         unsigned br;
 425         unsigned rgb = ((const uint16_t*)src)[i];
 426         br = rgb&0x7c1F;
 427         ((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
 428     }
 429 }
 430
 431 void bgr8torgb8(const uint8_t *src, uint8_t *dst, long src_size)
 432 {
 433     long i;
 434     long num_pixels = src_size;
 435     for (i=0; i<num_pixels; i++) {
 436         unsigned b,g,r;
 437         register uint8_t rgb;
 438         rgb = src[i];
 439         r = (rgb&0x07);
 440         g = (rgb&0x38)>>3;
 441         b = (rgb&0xC0)>>6;
 442         dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
 443     }
 444 }
 445
 446 #define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
 447 void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, long src_size) \
 448 {                                                                       \
 449     long i;                                                             \
 450                                                                         \
 451     for (i = 0; i < src_size; i+=4) {                                   \
 452         dst[i + 0] = src[i + a];                                        \
 453         dst[i + 1] = src[i + b];                                        \
 454         dst[i + 2] = src[i + c];                                        \
 455         dst[i + 3] = src[i + d];                                        \
 456     }                                                                   \
 457 }
 458
 459 DEFINE_SHUFFLE_BYTES(0, 3, 2, 1);
 460 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0);
 461 DEFINE_SHUFFLE_BYTES(2, 1, 0, 3);
 462 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
 463 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);
 464