Libav
|
00001 /* 00002 * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at> 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFmpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #include <stdio.h> 00022 #include <stdlib.h> 00023 #include <string.h> 00024 #include <inttypes.h> 00025 #include <stdarg.h> 00026 00027 #undef HAVE_AV_CONFIG_H 00028 #include "libavutil/mem.h" 00029 #include "libavutil/avutil.h" 00030 #include "libavutil/lfg.h" 00031 #include "swscale.h" 00032 00033 /* HACK Duplicated from swscale_internal.h. 00034 * Should be removed when a cleaner pixel format system exists. */ 00035 const char *sws_format_name(enum PixelFormat format); 00036 #define isGray(x) ( \ 00037 (x)==PIX_FMT_GRAY8 \ 00038 || (x)==PIX_FMT_GRAY16BE \ 00039 || (x)==PIX_FMT_GRAY16LE \ 00040 ) 00041 #define hasChroma(x) (!( \ 00042 isGray(x) \ 00043 || (x)==PIX_FMT_MONOBLACK \ 00044 || (x)==PIX_FMT_MONOWHITE \ 00045 )) 00046 #define isALPHA(x) ( \ 00047 (x)==PIX_FMT_BGR32 \ 00048 || (x)==PIX_FMT_BGR32_1 \ 00049 || (x)==PIX_FMT_RGB32 \ 00050 || (x)==PIX_FMT_RGB32_1 \ 00051 || (x)==PIX_FMT_YUVA420P \ 00052 ) 00053 00054 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h) 00055 { 00056 int x,y; 00057 uint64_t ssd=0; 00058 00059 //printf("%d %d\n", w, h); 00060 00061 for (y=0; y<h; y++) { 00062 for (x=0; x<w; x++) { 00063 int d= src1[x + y*stride1] - src2[x + y*stride2]; 00064 ssd+= d*d; 00065 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 ); 00066 } 00067 //printf("\n"); 00068 } 00069 return ssd; 00070 } 00071 00072 // test by ref -> src -> dst -> out & compare out against ref 00073 // ref & out are YV12 00074 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h, 00075 enum PixelFormat srcFormat, enum PixelFormat dstFormat, 00076 int srcW, int srcH, int dstW, int dstH, int flags) 00077 { 00078 uint8_t *src[4] = {0}; 00079 uint8_t *dst[4] = {0}; 00080 uint8_t *out[4] = {0}; 00081 int srcStride[4], dstStride[4]; 00082 int i; 00083 uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0; 00084 struct SwsContext *srcContext = NULL, *dstContext = NULL, 00085 *outContext = NULL; 00086 int res; 00087 00088 res = 0; 00089 for (i=0; i<4; i++) { 00090 // avoid stride % bpp != 0 00091 if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24) 00092 srcStride[i]= srcW*3; 00093 else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE) 00094 srcStride[i]= srcW*6; 00095 else 00096 srcStride[i]= srcW*4; 00097 00098 if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24) 00099 dstStride[i]= dstW*3; 00100 else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE) 00101 dstStride[i]= dstW*6; 00102 else 00103 dstStride[i]= dstW*4; 00104 00105 /* Image buffers passed into libswscale can be allocated any way you 00106 * prefer, as long as they're aligned enough for the architecture, and 00107 * they're freed appropriately (such as using av_free for buffers 00108 * allocated with av_malloc). */ 00109 src[i]= av_mallocz(srcStride[i]*srcH); 00110 dst[i]= av_mallocz(dstStride[i]*dstH); 00111 out[i]= av_mallocz(refStride[i]*h); 00112 if (!src[i] || !dst[i] || !out[i]) { 00113 perror("Malloc"); 00114 res = -1; 00115 00116 goto end; 00117 } 00118 } 00119 00120 srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL); 00121 if (!srcContext) { 00122 fprintf(stderr, "Failed to get %s ---> %s\n", 00123 sws_format_name(PIX_FMT_YUVA420P), 00124 sws_format_name(srcFormat)); 00125 res = -1; 00126 00127 goto end; 00128 } 00129 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL); 00130 if (!dstContext) { 00131 fprintf(stderr, "Failed to get %s ---> %s\n", 00132 sws_format_name(srcFormat), 00133 sws_format_name(dstFormat)); 00134 res = -1; 00135 00136 goto end; 00137 } 00138 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL); 00139 if (!outContext) { 00140 fprintf(stderr, "Failed to get %s ---> %s\n", 00141 sws_format_name(dstFormat), 00142 sws_format_name(PIX_FMT_YUVA420P)); 00143 res = -1; 00144 00145 goto end; 00146 } 00147 // printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2], 00148 // (int)src[0], (int)src[1], (int)src[2]); 00149 00150 sws_scale(srcContext, ref, refStride, 0, h , src, srcStride); 00151 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride); 00152 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride); 00153 00154 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h); 00155 if (hasChroma(srcFormat) && hasChroma(dstFormat)) { 00156 //FIXME check that output is really gray 00157 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1); 00158 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1); 00159 } 00160 if (isALPHA(srcFormat) && isALPHA(dstFormat)) 00161 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h); 00162 00163 ssdY/= w*h; 00164 ssdU/= w*h/4; 00165 ssdV/= w*h/4; 00166 ssdA/= w*h; 00167 00168 printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n", 00169 sws_format_name(srcFormat), srcW, srcH, 00170 sws_format_name(dstFormat), dstW, dstH, 00171 flags, ssdY, ssdU, ssdV, ssdA); 00172 fflush(stdout); 00173 00174 end: 00175 00176 sws_freeContext(srcContext); 00177 sws_freeContext(dstContext); 00178 sws_freeContext(outContext); 00179 00180 for (i=0; i<4; i++) { 00181 av_free(src[i]); 00182 av_free(dst[i]); 00183 av_free(out[i]); 00184 } 00185 00186 return res; 00187 } 00188 00189 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h) 00190 { 00191 const int flags[] = { SWS_FAST_BILINEAR, 00192 SWS_BILINEAR, SWS_BICUBIC, 00193 SWS_X , SWS_POINT , SWS_AREA, 0 }; 00194 const int srcW = w; 00195 const int srcH = h; 00196 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 }; 00197 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 }; 00198 enum PixelFormat srcFormat, dstFormat; 00199 00200 for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) { 00201 if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat)) 00202 continue; 00203 00204 for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) { 00205 int i, j, k; 00206 int res = 0; 00207 00208 if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat)) 00209 continue; 00210 00211 printf("%s -> %s\n", 00212 sws_format_name(srcFormat), 00213 sws_format_name(dstFormat)); 00214 fflush(stdout); 00215 00216 for (i = 0; dstW[i] && !res; i++) 00217 for (j = 0; dstH[j] && !res; j++) 00218 for (k = 0; flags[k] && !res; k++) 00219 res = doTest(ref, refStride, w, h, srcFormat, dstFormat, 00220 srcW, srcH, dstW[i], dstH[j], flags[k]); 00221 } 00222 } 00223 } 00224 00225 #define W 96 00226 #define H 96 00227 00228 int main(int argc, char **argv) 00229 { 00230 uint8_t *rgb_data = av_malloc (W*H*4); 00231 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL}; 00232 int rgb_stride[3]={4*W, 0, 0}; 00233 uint8_t *data = av_malloc (4*W*H); 00234 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3}; 00235 int stride[4]={W, W, W, W}; 00236 int x, y; 00237 struct SwsContext *sws; 00238 AVLFG rand; 00239 00240 if (!rgb_data || !data) 00241 return -1; 00242 00243 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL); 00244 00245 av_lfg_init(&rand, 1); 00246 00247 for (y=0; y<H; y++) { 00248 for (x=0; x<W*4; x++) { 00249 rgb_data[ x + y*4*W]= av_lfg_get(&rand); 00250 } 00251 } 00252 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride); 00253 sws_freeContext(sws); 00254 av_free(rgb_data); 00255 00256 selfTest(src, stride, W, H); 00257 av_free(data); 00258 00259 return 0; 00260 }