FFmpeg: libswscale/rgb2rgb.c Source File

00001 /*
00002  * software RGB to RGB converter
00003  * pluralize by software PAL8 to RGB converter
00004  *              software YUV to YUV converter
00005  *              software YUV to RGB converter
00006  * Written by Nick Kurshev.
00007  * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
00008  *
00009  * This file is part of FFmpeg.
00010  *
00011  * FFmpeg is free software; you can redistribute it and/or
00012  * modify it under the terms of the GNU Lesser General Public
00013  * License as published by the Free Software Foundation; either
00014  * version 2.1 of the License, or (at your option) any later version.
00015  *
00016  * FFmpeg is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019  * Lesser General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU Lesser General Public
00022  * License along with FFmpeg; if not, write to the Free Software
00023  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00024  */
00025 
00026 #include <inttypes.h>
00027 
00028 #include "libavutil/attributes.h"
00029 #include "libavutil/bswap.h"
00030 #include "config.h"
00031 #include "rgb2rgb.h"
00032 #include "swscale.h"
00033 #include "swscale_internal.h"
00034 
00035 void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00036 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
00037 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
00038 void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, int src_size);
00039 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00040 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
00041 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
00042 void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00043 void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00044 
00045 void (*rgb32to16)(const uint8_t *src, uint8_t *dst, int src_size);
00046 void (*rgb32to15)(const uint8_t *src, uint8_t *dst, int src_size);
00047 void (*rgb24to16)(const uint8_t *src, uint8_t *dst, int src_size);
00048 void (*rgb24to15)(const uint8_t *src, uint8_t *dst, int src_size);
00049 void (*rgb16to32)(const uint8_t *src, uint8_t *dst, int src_size);
00050 void (*rgb16to15)(const uint8_t *src, uint8_t *dst, int src_size);
00051 void (*rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size);
00052 void (*rgb15to32)(const uint8_t *src, uint8_t *dst, int src_size);
00053 
00054 void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);
00055 
00056 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
00057                    const uint8_t *vsrc, uint8_t *dst,
00058                    int width, int height,
00059                    int lumStride, int chromStride, int dstStride);
00060 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc,
00061                    const uint8_t *vsrc, uint8_t *dst,
00062                    int width, int height,
00063                    int lumStride, int chromStride, int dstStride);
00064 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
00065                       const uint8_t *vsrc, uint8_t *dst,
00066                       int width, int height,
00067                       int lumStride, int chromStride, int dstStride);
00068 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc,
00069                       const uint8_t *vsrc, uint8_t *dst,
00070                       int width, int height,
00071                       int lumStride, int chromStride, int dstStride);
00072 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst,
00073                    uint8_t *udst, uint8_t *vdst,
00074                    int width, int height,
00075                    int lumStride, int chromStride, int srcStride);
00076 void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst,
00077                     uint8_t *udst, uint8_t *vdst,
00078                     int width, int height,
00079                     int lumStride, int chromStride, int srcStride);
00080 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
00081                  int srcStride, int dstStride);
00082 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
00083                         int width, int height, int src1Stride,
00084                         int src2Stride, int dstStride);
00085 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
00086                     uint8_t *dst1, uint8_t *dst2,
00087                     int width, int height,
00088                     int srcStride1, int srcStride2,
00089                     int dstStride1, int dstStride2);
00090 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2,
00091                      const uint8_t *src3, uint8_t *dst,
00092                      int width, int height,
00093                      int srcStride1, int srcStride2,
00094                      int srcStride3, int dstStride);
00095 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
00096                      const uint8_t *src, int width, int height,
00097                      int lumStride, int chromStride, int srcStride);
00098 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
00099                      const uint8_t *src, int width, int height,
00100                      int lumStride, int chromStride, int srcStride);
00101 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
00102                      const uint8_t *src, int width, int height,
00103                      int lumStride, int chromStride, int srcStride);
00104 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
00105                      const uint8_t *src, int width, int height,
00106                      int lumStride, int chromStride, int srcStride);
00107 
00108 #define RGB2YUV_SHIFT 8
00109 #define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
00110 #define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
00111 #define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
00112 #define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
00113 #define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
00114 #define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
00115 #define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
00116 #define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
00117 #define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))
00118 
00119 //plain C versions
00120 #include "rgb2rgb_template.c"
00121 
00122 /*
00123  * RGB15->RGB16 original by Strepto/Astral
00124  * ported to gcc & bugfixed : A'rpi
00125  * MMX2, 3DNOW optimization by Nick Kurshev
00126  * 32-bit C version, and and&add trick by Michael Niedermayer
00127  */
00128 
00129 av_cold void sws_rgb2rgb_init(void)
00130 {
00131     rgb2rgb_init_c();
00132     if (HAVE_MMX)
00133         rgb2rgb_init_x86();
00134 }
00135 
00136 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
00137 {
00138     int i, num_pixels = src_size >> 2;
00139 
00140     for (i = 0; i < num_pixels; i++) {
00141 #if HAVE_BIGENDIAN
00142         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
00143         dst[3 * i + 0] = src[4 * i + 1];
00144         dst[3 * i + 1] = src[4 * i + 2];
00145         dst[3 * i + 2] = src[4 * i + 3];
00146 #else
00147         dst[3 * i + 0] = src[4 * i + 2];
00148         dst[3 * i + 1] = src[4 * i + 1];
00149         dst[3 * i + 2] = src[4 * i + 0];
00150 #endif
00151     }
00152 }
00153 
00154 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
00155 {
00156     int i;
00157 
00158     for (i = 0; 3 * i < src_size; i++) {
00159 #if HAVE_BIGENDIAN
00160         /* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
00161         dst[4 * i + 0] = 255;
00162         dst[4 * i + 1] = src[3 * i + 0];
00163         dst[4 * i + 2] = src[3 * i + 1];
00164         dst[4 * i + 3] = src[3 * i + 2];
00165 #else
00166         dst[4 * i + 0] = src[3 * i + 2];
00167         dst[4 * i + 1] = src[3 * i + 1];
00168         dst[4 * i + 2] = src[3 * i + 0];
00169         dst[4 * i + 3] = 255;
00170 #endif
00171     }
00172 }
00173 
00174 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
00175 {
00176     uint8_t *d          = dst;
00177     const uint16_t *s   = (const uint16_t *)src;
00178     const uint16_t *end = s + src_size / 2;
00179 
00180     while (s < end) {
00181         register uint16_t bgr = *s++;
00182 #if HAVE_BIGENDIAN
00183         *d++ = 255;
00184         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
00185         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
00186         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
00187 #else
00188         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
00189         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
00190         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
00191         *d++ = 255;
00192 #endif
00193     }
00194 }
00195 
00196 void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
00197 {
00198     uint16_t rgb, r, g, b;
00199     uint16_t *d         = (uint16_t *)dst;
00200     const uint16_t *s   = (const uint16_t *)src;
00201     const uint16_t *end = s + src_size / 2;
00202 
00203     while (s < end) {
00204         rgb  = *s++;
00205         r    = rgb & 0xF00;
00206         g    = rgb & 0x0F0;
00207         b    = rgb & 0x00F;
00208         r    = (r << 3) | ((r & 0x800) >> 1);
00209         g    = (g << 2) | ((g & 0x080) >> 2);
00210         b    = (b << 1) | ( b          >> 3);
00211         *d++ = r | g | b;
00212     }
00213 }
00214 
00215 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
00216 {
00217     uint8_t *d          = dst;
00218     const uint16_t *s   = (const uint16_t *)src;
00219     const uint16_t *end = s + src_size / 2;
00220 
00221     while (s < end) {
00222         register uint16_t bgr = *s++;
00223         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
00224         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
00225         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
00226     }
00227 }
00228 
00229 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
00230 {
00231     int i, num_pixels = src_size >> 1;
00232 
00233     for (i = 0; i < num_pixels; i++) {
00234         unsigned rgb         = ((const uint16_t *)src)[i];
00235         ((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
00236     }
00237 }
00238 
00239 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
00240 {
00241     int i, num_pixels = src_size >> 1;
00242 
00243     for (i = 0; i < num_pixels; i++) {
00244         unsigned rgb         = ((const uint16_t *)src)[i];
00245         ((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
00246     }
00247 }
00248 
00249 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
00250 {
00251     uint8_t *d          = dst;
00252     const uint16_t *s   = (const uint16_t *)src;
00253     const uint16_t *end = s + src_size / 2;
00254 
00255     while (s < end) {
00256         register uint16_t bgr = *s++;
00257 #if HAVE_BIGENDIAN
00258         *d++ = 255;
00259         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
00260         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
00261         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
00262 #else
00263         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
00264         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
00265         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
00266         *d++ = 255;
00267 #endif
00268     }
00269 }
00270 
00271 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
00272 {
00273     uint8_t *d          = dst;
00274     const uint16_t *s   = (const uint16_t *)src;
00275     const uint16_t *end = s + src_size / 2;
00276 
00277     while (s < end) {
00278         register uint16_t bgr = *s++;
00279         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
00280         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
00281         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
00282     }
00283 }
00284 
00285 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
00286 {
00287     int i, num_pixels = src_size >> 1;
00288 
00289     for (i = 0; i < num_pixels; i++) {
00290         unsigned rgb         = ((const uint16_t *)src)[i];
00291         ((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
00292     }
00293 }
00294 
00295 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
00296 {
00297     int i, num_pixels = src_size >> 1;
00298 
00299     for (i = 0; i < num_pixels; i++) {
00300         unsigned rgb         = ((const uint16_t *)src)[i];
00301         unsigned br          = rgb & 0x7C1F;
00302         ((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
00303     }
00304 }
00305 
00306 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
00307 {
00308     uint16_t *d = (uint16_t *)dst;
00309     uint16_t *s = (uint16_t *)src;
00310     int i, num_pixels = src_size >> 1;
00311 
00312     for (i = 0; i < num_pixels; i++) {
00313         unsigned rgb = s[i];
00314         d[i]         = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
00315     }
00316 }
00317 
00318 
00319 #define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
00320 void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src,             \
00321                                         uint8_t *dst, int src_size)     \
00322 {                                                                       \
00323     int i;                                                              \
00324                                                                         \
00325     for (i = 0; i < src_size; i += 4) {                                 \
00326         dst[i + 0] = src[i + a];                                        \
00327         dst[i + 1] = src[i + b];                                        \
00328         dst[i + 2] = src[i + c];                                        \
00329         dst[i + 3] = src[i + d];                                        \
00330     }                                                                   \
00331 }
00332 
00333 DEFINE_SHUFFLE_BYTES(0, 3, 2, 1)
00334 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
00335 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
00336 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)
00337 
00338 #define DEFINE_RGB48TOBGR48(need_bswap, swap)                           \
00339 void rgb48tobgr48_ ## need_bswap(const uint8_t *src,                    \
00340                                  uint8_t *dst, int src_size)            \
00341 {                                                                       \
00342     uint16_t *d = (uint16_t *)dst;                                      \
00343     uint16_t *s = (uint16_t *)src;                                      \
00344     int i, num_pixels = src_size >> 1;                                  \
00345                                                                         \
00346     for (i = 0; i < num_pixels; i += 3) {                               \
00347         d[i    ] = swap ? av_bswap16(s[i + 2]) : s[i + 2];              \
00348         d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1];              \
00349         d[i + 2] = swap ? av_bswap16(s[i    ]) : s[i    ];              \
00350     }                                                                   \
00351 }
00352 
00353 DEFINE_RGB48TOBGR48(nobswap, 0)
00354 DEFINE_RGB48TOBGR48(bswap, 1)
00355 
00356 #define DEFINE_RGB64TOBGR48(need_bswap, swap)                           \
00357 void rgb64tobgr48_ ## need_bswap(const uint8_t *src,                    \
00358                                  uint8_t *dst, int src_size)            \
00359 {                                                                       \
00360     uint16_t *d = (uint16_t *)dst;                                      \
00361     uint16_t *s = (uint16_t *)src;                                      \
00362     int i, num_pixels = src_size >> 3;                                  \
00363                                                                         \
00364     for (i = 0; i < num_pixels; i++) {                                  \
00365         d[3 * i    ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
00366         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
00367         d[3 * i + 2] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
00368     }                                                                   \
00369 }
00370 
00371 DEFINE_RGB64TOBGR48(nobswap, 0)
00372 DEFINE_RGB64TOBGR48(bswap, 1)
00373 
00374 #define DEFINE_RGB64TO48(need_bswap, swap)                              \
00375 void rgb64to48_ ## need_bswap(const uint8_t *src,                       \
00376                               uint8_t *dst, int src_size)               \
00377 {                                                                       \
00378     uint16_t *d = (uint16_t *)dst;                                      \
00379     uint16_t *s = (uint16_t *)src;                                      \
00380     int i, num_pixels = src_size >> 3;                                  \
00381                                                                         \
00382     for (i = 0; i < num_pixels; i++) {                                  \
00383         d[3 * i    ] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
00384         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
00385         d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
00386     }                                                                   \
00387 }
00388 
00389 DEFINE_RGB64TO48(nobswap, 0)
00390 DEFINE_RGB64TO48(bswap, 1)