swscale-test.c

   1 /*
   2  * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <inttypes.h>
  25 #include <stdarg.h>
  26
  27 #undef HAVE_AV_CONFIG_H
  28 #include "libavcore/imgutils.h"
  29 #include "libavutil/mem.h"
  30 #include "libavutil/avutil.h"
  31 #include "libavutil/crc.h"
  32 #include "libavutil/pixdesc.h"
  33 #include "libavutil/lfg.h"
  34 #include "swscale.h"
  35
  36 /* HACK Duplicated from swscale_internal.h.
  37  * Should be removed when a cleaner pixel format system exists. */
  38 #define isGray(x)       (           \
  39            (x)==PIX_FMT_GRAY8       \
  40         || (x)==PIX_FMT_GRAY16BE    \
  41         || (x)==PIX_FMT_GRAY16LE    \
  42     )
  43 #define hasChroma(x)   (!(          \
  44             isGray(x)               \
  45         || (x)==PIX_FMT_MONOBLACK   \
  46         || (x)==PIX_FMT_MONOWHITE   \
  47     ))
  48 #define isALPHA(x)      (           \
  49            (x)==PIX_FMT_BGR32       \
  50         || (x)==PIX_FMT_BGR32_1     \
  51         || (x)==PIX_FMT_RGB32       \
  52         || (x)==PIX_FMT_RGB32_1     \
  53         || (x)==PIX_FMT_YUVA420P    \
  54     )
  55
  56 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
  57 {
  58     int x,y;
  59     uint64_t ssd=0;
  60
  61 //printf("%d %d\n", w, h);
  62
  63     for (y=0; y<h; y++) {
  64         for (x=0; x<w; x++) {
  65             int d= src1[x + y*stride1] - src2[x + y*stride2];
  66             ssd+= d*d;
  67 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
  68         }
  69 //printf("\n");
  70     }
  71     return ssd;
  72 }
  73
  74 struct Results {
  75     uint64_t ssdY;
  76     uint64_t ssdU;
  77     uint64_t ssdV;
  78     uint64_t ssdA;
  79     uint32_t crc;
  80 };
  81
  82 // test by ref -> src -> dst -> out & compare out against ref
  83 // ref & out are YV12
  84 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
  85                   enum PixelFormat srcFormat, enum PixelFormat dstFormat,
  86                   int srcW, int srcH, int dstW, int dstH, int flags,
  87                   struct Results *r)
  88 {
  89     static enum PixelFormat cur_srcFormat;
  90     static int cur_srcW, cur_srcH;
  91     static uint8_t *src[4];
  92     static int srcStride[4];
  93     uint8_t *dst[4] = {0};
  94     uint8_t *out[4] = {0};
  95     int dstStride[4];
  96     int i;
  97     uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
  98     struct SwsContext *dstContext = NULL, *outContext = NULL;
  99     uint32_t crc = 0;
 100     int res = 0;
 101
 102     if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
 103         struct SwsContext *srcContext = NULL;
 104         int p;
 105
 106         for (p = 0; p < 4; p++)
 107             if (src[p])
 108                 av_freep(&src[p]);
 109
 110         av_image_fill_linesizes(srcStride, srcFormat, srcW);
 111         for (p = 0; p < 4; p++) {
 112             if (srcStride[p])
 113                 src[p] = av_mallocz(srcStride[p]*srcH+16);
 114             if (srcStride[p] && !src[p]) {
 115                 perror("Malloc");
 116                 res = -1;
 117
 118                 goto end;
 119             }
 120         }
 121         srcContext = sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH,
 122                                     srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
 123         if (!srcContext) {
 124             fprintf(stderr, "Failed to get %s ---> %s\n",
 125                     av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
 126                     av_pix_fmt_descriptors[srcFormat].name);
 127             res = -1;
 128
 129             goto end;
 130         }
 131         sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
 132         sws_freeContext(srcContext);
 133
 134         cur_srcFormat = srcFormat;
 135         cur_srcW = srcW;
 136         cur_srcH = srcH;
 137     }
 138
 139     av_image_fill_linesizes(dstStride, dstFormat, dstW);
 140     for (i=0; i<4; i++) {
 141         /* Image buffers passed into libswscale can be allocated any way you
 142          * prefer, as long as they're aligned enough for the architecture, and
 143          * they're freed appropriately (such as using av_free for buffers
 144          * allocated with av_malloc). */
 145         /* An extra 16 bytes is being allocated because some scalers may write
 146          * out of bounds. */
 147         if (dstStride[i])
 148             dst[i]= av_mallocz(dstStride[i]*dstH+16);
 149         if (dstStride[i] && !dst[i]) {
 150             perror("Malloc");
 151             res = -1;
 152
 153             goto end;
 154         }
 155     }
 156
 157     dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
 158     if (!dstContext) {
 159         fprintf(stderr, "Failed to get %s ---> %s\n",
 160                 av_pix_fmt_descriptors[srcFormat].name,
 161                 av_pix_fmt_descriptors[dstFormat].name);
 162         res = -1;
 163
 164         goto end;
 165     }
 166 //    printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
 167 //        (int)src[0], (int)src[1], (int)src[2]);
 168
 169     printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
 170            av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
 171            av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
 172            flags);
 173     fflush(stdout);
 174
 175     sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
 176
 177     for (i = 0; i < 4 && dstStride[i]; i++) {
 178         crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i], dstStride[i] * dstH);
 179     }
 180
 181     if (r && crc == r->crc) {
 182         ssdY = r->ssdY;
 183         ssdU = r->ssdU;
 184         ssdV = r->ssdV;
 185         ssdA = r->ssdA;
 186     } else {
 187         for (i=0; i<4; i++) {
 188             if (refStride[i])
 189                 out[i]= av_mallocz(refStride[i]*h);
 190             if (refStride[i] && !out[i]) {
 191                 perror("Malloc");
 192                 res = -1;
 193
 194                 goto end;
 195             }
 196         }
 197         outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
 198         if (!outContext) {
 199             fprintf(stderr, "Failed to get %s ---> %s\n",
 200                     av_pix_fmt_descriptors[dstFormat].name,
 201                     av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
 202             res = -1;
 203
 204             goto end;
 205         }
 206         sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
 207
 208         ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
 209         if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
 210             //FIXME check that output is really gray
 211             ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
 212             ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
 213         }
 214         if (isALPHA(srcFormat) && isALPHA(dstFormat))
 215             ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
 216
 217         ssdY/= w*h;
 218         ssdU/= w*h/4;
 219         ssdV/= w*h/4;
 220         ssdA/= w*h;
 221
 222         sws_freeContext(outContext);
 223
 224         for (i=0; i<4; i++) {
 225             if (refStride[i])
 226                 av_free(out[i]);
 227         }
 228     }
 229
 230     printf(" CRC=%08x SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
 231            crc, ssdY, ssdU, ssdV, ssdA);
 232
 233 end:
 234
 235     sws_freeContext(dstContext);
 236
 237     for (i=0; i<4; i++) {
 238         if (dstStride[i])
 239             av_free(dst[i]);
 240     }
 241
 242     return res;
 243 }
 244
 245 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
 246                      enum PixelFormat srcFormat_in,
 247                      enum PixelFormat dstFormat_in)
 248 {
 249     const int flags[] = { SWS_FAST_BILINEAR,
 250                           SWS_BILINEAR, SWS_BICUBIC,
 251                           SWS_X       , SWS_POINT  , SWS_AREA, 0 };
 252     const int srcW = w;
 253     const int srcH = h;
 254     const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
 255     const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
 256     enum PixelFormat srcFormat, dstFormat;
 257
 258     for (srcFormat = srcFormat_in != PIX_FMT_NONE ? srcFormat_in : 0;
 259          srcFormat < PIX_FMT_NB; srcFormat++) {
 260         if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
 261             continue;
 262
 263         for (dstFormat = dstFormat_in != PIX_FMT_NONE ? dstFormat_in : 0;
 264              dstFormat < PIX_FMT_NB; dstFormat++) {
 265             int i, j, k;
 266             int res = 0;
 267
 268             if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
 269                 continue;
 270
 271             printf("%s -> %s\n",
 272                    av_pix_fmt_descriptors[srcFormat].name,
 273                    av_pix_fmt_descriptors[dstFormat].name);
 274             fflush(stdout);
 275
 276             for (k = 0; flags[k] && !res; k++) {
 277                 for (i = 0; dstW[i] && !res; i++)
 278                     for (j = 0; dstH[j] && !res; j++)
 279                         res = doTest(ref, refStride, w, h,
 280                                      srcFormat, dstFormat,
 281                                      srcW, srcH, dstW[i], dstH[j], flags[k],
 282                                      NULL);
 283             }
 284             if (dstFormat_in != PIX_FMT_NONE)
 285                 break;
 286         }
 287         if (srcFormat_in != PIX_FMT_NONE)
 288             break;
 289     }
 290 }
 291
 292 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
 293                     enum PixelFormat srcFormat_in,
 294                     enum PixelFormat dstFormat_in)
 295 {
 296     char buf[256];
 297
 298     while (fgets(buf, sizeof(buf), fp)) {
 299         struct Results r;
 300         enum PixelFormat srcFormat;
 301         char srcStr[12];
 302         int srcW, srcH;
 303         enum PixelFormat dstFormat;
 304         char dstStr[12];
 305         int dstW, dstH;
 306         int flags;
 307         int ret;
 308
 309         ret = sscanf(buf, " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
 310                           " SSD=%"PRId64", %"PRId64", %"PRId64", %"PRId64"\n",
 311                           srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
 312                           &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
 313         if (ret != 12) {
 314             srcStr[0] = dstStr[0] = 0;
 315             ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
 316         }
 317
 318         srcFormat = av_get_pix_fmt(srcStr);
 319         dstFormat = av_get_pix_fmt(dstStr);
 320
 321         if (srcFormat == PIX_FMT_NONE || dstFormat == PIX_FMT_NONE) {
 322             fprintf(stderr, "malformed input file\n");
 323             return -1;
 324         }
 325         if ((srcFormat_in != PIX_FMT_NONE && srcFormat_in != srcFormat) ||
 326             (dstFormat_in != PIX_FMT_NONE && dstFormat_in != dstFormat))
 327             continue;
 328         if (ret != 12) {
 329             printf("%s", buf);
 330             continue;
 331         }
 332
 333         doTest(ref, refStride, w, h,
 334                srcFormat, dstFormat,
 335                srcW, srcH, dstW, dstH, flags,
 336                &r);
 337     }
 338
 339     return 0;
 340 }
 341
 342 #define W 96
 343 #define H 96
 344
 345 int main(int argc, char **argv)
 346 {
 347     enum PixelFormat srcFormat = PIX_FMT_NONE;
 348     enum PixelFormat dstFormat = PIX_FMT_NONE;
 349     uint8_t *rgb_data = av_malloc (W*H*4);
 350     uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
 351     int rgb_stride[3]={4*W, 0, 0};
 352     uint8_t *data = av_malloc (4*W*H);
 353     uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
 354     int stride[4]={W, W, W, W};
 355     int x, y;
 356     struct SwsContext *sws;
 357     AVLFG rand;
 358     int res = -1;
 359     int i;
 360
 361     if (!rgb_data || !data)
 362         return -1;
 363
 364     sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
 365
 366     av_lfg_init(&rand, 1);
 367
 368     for (y=0; y<H; y++) {
 369         for (x=0; x<W*4; x++) {
 370             rgb_data[ x + y*4*W]= av_lfg_get(&rand);
 371         }
 372     }
 373     sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
 374     sws_freeContext(sws);
 375     av_free(rgb_data);
 376
 377     for (i = 1; i < argc; i += 2) {
 378         if (argv[i][0] != '-' || i+1 == argc)
 379             goto bad_option;
 380         if (!strcmp(argv[i], "-ref")) {
 381             FILE *fp = fopen(argv[i+1], "r");
 382             if (!fp) {
 383                 fprintf(stderr, "could not open '%s'\n", argv[i+1]);
 384                 goto error;
 385             }
 386             res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
 387             fclose(fp);
 388             goto end;
 389         } else if (!strcmp(argv[i], "-src")) {
 390             srcFormat = av_get_pix_fmt(argv[i+1]);
 391             if (srcFormat == PIX_FMT_NONE) {
 392                 fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
 393                 return -1;
 394             }
 395         } else if (!strcmp(argv[i], "-dst")) {
 396             dstFormat = av_get_pix_fmt(argv[i+1]);
 397             if (dstFormat == PIX_FMT_NONE) {
 398                 fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
 399                 return -1;
 400             }
 401         } else {
 402 bad_option:
 403             fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
 404             goto error;
 405         }
 406     }
 407
 408     selfTest(src, stride, W, H, srcFormat, dstFormat);
 409 end:
 410     res = 0;
 411 error:
 412     av_free(data);
 413
 414     return res;
 415 }