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libswscale/rgb2rgb.c

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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 #include <inttypes.h>
00026 #include "config.h"
00027 #include "libavutil/bswap.h"
00028 #include "rgb2rgb.h"
00029 #include "swscale.h"
00030 #include "swscale_internal.h"
00031 
00032 void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, int src_size);
00033 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
00034 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
00035 void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00036 void (*rgb32to16)(const uint8_t *src, uint8_t *dst, int src_size);
00037 void (*rgb32to15)(const uint8_t *src, uint8_t *dst, int src_size);
00038 void (*rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size);
00039 void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00040 void (*rgb15to32)(const uint8_t *src, uint8_t *dst, int src_size);
00041 void (*rgb16to15)(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 (*rgb16to32)(const uint8_t *src, uint8_t *dst, int src_size);
00044 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
00045 void (*rgb24to16)(const uint8_t *src, uint8_t *dst, int src_size);
00046 void (*rgb24to15)(const uint8_t *src, uint8_t *dst, int src_size);
00047 void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);
00048 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
00049 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
00050 
00051 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
00052                    int width, int height,
00053                    int lumStride, int chromStride, int dstStride);
00054 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
00055                    int width, int height,
00056                    int lumStride, int chromStride, int dstStride);
00057 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
00058                       int width, int height,
00059                       int lumStride, int chromStride, int dstStride);
00060 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
00061                       int width, int height,
00062                       int lumStride, int chromStride, int dstStride);
00063 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
00064                    int width, int height,
00065                    int lumStride, int chromStride, int srcStride);
00066 void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
00067                     int width, int height,
00068                     int lumStride, int chromStride, int srcStride);
00069 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
00070                  int srcStride, int dstStride);
00071 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
00072                         int width, int height, int src1Stride,
00073                         int src2Stride, int dstStride);
00074 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
00075                     uint8_t *dst1, uint8_t *dst2,
00076                     int width, int height,
00077                     int srcStride1, int srcStride2,
00078                     int dstStride1, int dstStride2);
00079 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
00080                      uint8_t *dst,
00081                      int width, int height,
00082                      int srcStride1, int srcStride2,
00083                      int srcStride3, int dstStride);
00084 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
00085                      int width, int height,
00086                      int lumStride, int chromStride, int srcStride);
00087 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
00088                      int width, int height,
00089                      int lumStride, int chromStride, int srcStride);
00090 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
00091                      int width, int height,
00092                      int lumStride, int chromStride, int srcStride);
00093 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
00094                      int width, int height,
00095                      int lumStride, int chromStride, int srcStride);
00096 
00097 #define RGB2YUV_SHIFT 8
00098 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
00099 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
00100 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
00101 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
00102 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
00103 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
00104 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
00105 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
00106 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
00107 
00108 //plain C versions
00109 #include "rgb2rgb_template.c"
00110 
00111 
00112 /*
00113  RGB15->RGB16 original by Strepto/Astral
00114  ported to gcc & bugfixed : A'rpi
00115  MMX2, 3DNOW optimization by Nick Kurshev
00116  32-bit C version, and and&add trick by Michael Niedermayer
00117 */
00118 
00119 void sws_rgb2rgb_init(void)
00120 {
00121     rgb2rgb_init_c();
00122     if (HAVE_MMX)
00123         rgb2rgb_init_x86();
00124 }
00125 
00126 #if LIBSWSCALE_VERSION_MAJOR < 1
00127 void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
00128 {
00129     sws_convertPalette8ToPacked32(src, dst, num_pixels, palette);
00130 }
00131 
00132 void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
00133 {
00134     sws_convertPalette8ToPacked24(src, dst, num_pixels, palette);
00135 }
00136 
00140 void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
00141 {
00142     long i;
00143     for (i=0; i<num_pixels; i++)
00144         ((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
00145 }
00146 void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
00147 {
00148     long i;
00149     for (i=0; i<num_pixels; i++)
00150         ((uint16_t *)dst)[i] = av_bswap16(((const uint16_t *)palette)[src[i]]);
00151 }
00152 #endif
00153 
00154 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
00155 {
00156     int i;
00157     int num_pixels = src_size >> 2;
00158     for (i=0; i<num_pixels; i++) {
00159 #if HAVE_BIGENDIAN
00160         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
00161         dst[3*i + 0] = src[4*i + 1];
00162         dst[3*i + 1] = src[4*i + 2];
00163         dst[3*i + 2] = src[4*i + 3];
00164 #else
00165         dst[3*i + 0] = src[4*i + 2];
00166         dst[3*i + 1] = src[4*i + 1];
00167         dst[3*i + 2] = src[4*i + 0];
00168 #endif
00169     }
00170 }
00171 
00172 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
00173 {
00174     int i;
00175     for (i=0; 3*i<src_size; i++) {
00176 #if HAVE_BIGENDIAN
00177         /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
00178         dst[4*i + 0] = 255;
00179         dst[4*i + 1] = src[3*i + 0];
00180         dst[4*i + 2] = src[3*i + 1];
00181         dst[4*i + 3] = src[3*i + 2];
00182 #else
00183         dst[4*i + 0] = src[3*i + 2];
00184         dst[4*i + 1] = src[3*i + 1];
00185         dst[4*i + 2] = src[3*i + 0];
00186         dst[4*i + 3] = 255;
00187 #endif
00188     }
00189 }
00190 
00191 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
00192 {
00193     const uint16_t *end;
00194     uint8_t *d = dst;
00195     const uint16_t *s = (const uint16_t *)src;
00196     end = s + src_size/2;
00197     while (s < end) {
00198         register uint16_t bgr;
00199         bgr = *s++;
00200 #if HAVE_BIGENDIAN
00201         *d++ = 255;
00202         *d++ = (bgr&0x1F)<<3;
00203         *d++ = (bgr&0x7E0)>>3;
00204         *d++ = (bgr&0xF800)>>8;
00205 #else
00206         *d++ = (bgr&0xF800)>>8;
00207         *d++ = (bgr&0x7E0)>>3;
00208         *d++ = (bgr&0x1F)<<3;
00209         *d++ = 255;
00210 #endif
00211     }
00212 }
00213 
00214 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
00215 {
00216     const uint16_t *end;
00217     uint8_t *d = dst;
00218     const uint16_t *s = (const uint16_t *)src;
00219     end = s + src_size/2;
00220     while (s < end) {
00221         register uint16_t bgr;
00222         bgr = *s++;
00223         *d++ = (bgr&0xF800)>>8;
00224         *d++ = (bgr&0x7E0)>>3;
00225         *d++ = (bgr&0x1F)<<3;
00226     }
00227 }
00228 
00229 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
00230 {
00231     int i;
00232     int num_pixels = src_size >> 1;
00233 
00234     for (i=0; i<num_pixels; i++) {
00235         unsigned rgb = ((const uint16_t*)src)[i];
00236         ((uint16_t*)dst)[i] = (rgb>>11) | (rgb&0x7E0) | (rgb<<11);
00237     }
00238 }
00239 
00240 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
00241 {
00242     int i;
00243     int num_pixels = src_size >> 1;
00244 
00245     for (i=0; i<num_pixels; i++) {
00246         unsigned rgb = ((const uint16_t*)src)[i];
00247         ((uint16_t*)dst)[i] = (rgb>>11) | ((rgb&0x7C0)>>1) | ((rgb&0x1F)<<10);
00248     }
00249 }
00250 
00251 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
00252 {
00253     const uint16_t *end;
00254     uint8_t *d = dst;
00255     const uint16_t *s = (const uint16_t *)src;
00256     end = s + src_size/2;
00257     while (s < end) {
00258         register uint16_t bgr;
00259         bgr = *s++;
00260 #if HAVE_BIGENDIAN
00261         *d++ = 255;
00262         *d++ = (bgr&0x1F)<<3;
00263         *d++ = (bgr&0x3E0)>>2;
00264         *d++ = (bgr&0x7C00)>>7;
00265 #else
00266         *d++ = (bgr&0x7C00)>>7;
00267         *d++ = (bgr&0x3E0)>>2;
00268         *d++ = (bgr&0x1F)<<3;
00269         *d++ = 255;
00270 #endif
00271     }
00272 }
00273 
00274 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
00275 {
00276     const uint16_t *end;
00277     uint8_t *d = dst;
00278     const uint16_t *s = (const uint16_t *)src;
00279     end = s + src_size/2;
00280     while (s < end) {
00281         register uint16_t bgr;
00282         bgr = *s++;
00283         *d++ = (bgr&0x7C00)>>7;
00284         *d++ = (bgr&0x3E0)>>2;
00285         *d++ = (bgr&0x1F)<<3;
00286     }
00287 }
00288 
00289 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
00290 {
00291     int i;
00292     int num_pixels = src_size >> 1;
00293 
00294     for (i=0; i<num_pixels; i++) {
00295         unsigned rgb = ((const uint16_t*)src)[i];
00296         ((uint16_t*)dst)[i] = ((rgb&0x7C00)>>10) | ((rgb&0x3E0)<<1) | (rgb<<11);
00297     }
00298 }
00299 
00300 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
00301 {
00302     int i;
00303     int num_pixels = src_size >> 1;
00304 
00305     for (i=0; i<num_pixels; i++) {
00306         unsigned br;
00307         unsigned rgb = ((const uint16_t*)src)[i];
00308         br = rgb&0x7c1F;
00309         ((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
00310     }
00311 }
00312 
00313 void bgr8torgb8(const uint8_t *src, uint8_t *dst, int src_size)
00314 {
00315     int i;
00316     int num_pixels = src_size;
00317     for (i=0; i<num_pixels; i++) {
00318         unsigned b,g,r;
00319         register uint8_t rgb;
00320         rgb = src[i];
00321         r = (rgb&0x07);
00322         g = (rgb&0x38)>>3;
00323         b = (rgb&0xC0)>>6;
00324         dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
00325     }
00326 }
00327 
00328 #define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
00329 void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, int src_size) \
00330 {                                                                       \
00331     int i;                                                             \
00332                                                                         \
00333     for (i = 0; i < src_size; i+=4) {                                   \
00334         dst[i + 0] = src[i + a];                                        \
00335         dst[i + 1] = src[i + b];                                        \
00336         dst[i + 2] = src[i + c];                                        \
00337         dst[i + 3] = src[i + d];                                        \
00338     }                                                                   \
00339 }
00340 
00341 DEFINE_SHUFFLE_BYTES(0, 3, 2, 1);
00342 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0);
00343 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
00344 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);
00345 

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