ffmpeg/libswscale/swscale-test.c

   1 /*
   2  * Copyright (C) 2003-2011 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 "libavutil/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) == AV_PIX_FMT_GRAY8       ||     \
  40      (x) == AV_PIX_FMT_YA8         ||     \
  41      (x) == AV_PIX_FMT_GRAY16BE    ||     \
  42      (x) == AV_PIX_FMT_GRAY16LE    ||     \
  43      (x) == AV_PIX_FMT_YA16BE      ||     \
  44      (x) == AV_PIX_FMT_YA16LE)
  45 #define hasChroma(x)                   \
  46     (!(isGray(x)                ||     \
  47        (x) == AV_PIX_FMT_MONOBLACK ||     \
  48        (x) == AV_PIX_FMT_MONOWHITE))
  49 #define isALPHA(x)                     \
  50     ((x) == AV_PIX_FMT_BGR32   ||         \
  51      (x) == AV_PIX_FMT_BGR32_1 ||         \
  52      (x) == AV_PIX_FMT_RGB32   ||         \
  53      (x) == AV_PIX_FMT_RGB32_1 ||         \
  54      (x) == AV_PIX_FMT_YUVA420P)
  55
  56 static uint64_t getSSD(const uint8_t *src1, const uint8_t *src2, int stride1,
  57                        int stride2, int w, int h)
  58 {
  59     int x, y;
  60     uint64_t ssd = 0;
  61
  62     for (y = 0; y < h; y++) {
  63         for (x = 0; x < w; x++) {
  64             int d = src1[x + y * stride1] - src2[x + y * stride2];
  65             ssd += d * d;
  66         }
  67     }
  68     return ssd;
  69 }
  70
  71 struct Results {
  72     uint64_t ssdY;
  73     uint64_t ssdU;
  74     uint64_t ssdV;
  75     uint64_t ssdA;
  76     uint32_t crc;
  77 };
  78
  79 // test by ref -> src -> dst -> out & compare out against ref
  80 // ref & out are YV12
  81 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
  82                   enum AVPixelFormat srcFormat, enum AVPixelFormat dstFormat,
  83                   int srcW, int srcH, int dstW, int dstH, int flags,
  84                   struct Results *r)
  85 {
  86     const AVPixFmtDescriptor *desc_yuva420p = av_pix_fmt_desc_get(AV_PIX_FMT_YUVA420P);
  87     const AVPixFmtDescriptor *desc_src      = av_pix_fmt_desc_get(srcFormat);
  88     const AVPixFmtDescriptor *desc_dst      = av_pix_fmt_desc_get(dstFormat);
  89     static enum AVPixelFormat 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] = {0};
  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             av_freep(&src[p]);
 108
 109         av_image_fill_linesizes(srcStride, srcFormat, srcW);
 110         for (p = 0; p < 4; p++) {
 111             srcStride[p] = FFALIGN(srcStride[p], 16);
 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                 goto end;
 118             }
 119         }
 120         srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
 121                                     srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
 122         if (!srcContext) {
 123             fprintf(stderr, "Failed to get %s ---> %s\n",
 124                     desc_yuva420p->name,
 125                     desc_src->name);
 126             res = -1;
 127             goto end;
 128         }
 129         sws_scale(srcContext, (const uint8_t * const*)ref, refStride, 0, h, src, srcStride);
 130         sws_freeContext(srcContext);
 131
 132         cur_srcFormat = srcFormat;
 133         cur_srcW      = srcW;
 134         cur_srcH      = srcH;
 135     }
 136
 137     av_image_fill_linesizes(dstStride, dstFormat, dstW);
 138     for (i = 0; i < 4; i++) {
 139         /* Image buffers passed into libswscale can be allocated any way you
 140          * prefer, as long as they're aligned enough for the architecture, and
 141          * they're freed appropriately (such as using av_free for buffers
 142          * allocated with av_malloc). */
 143         /* An extra 16 bytes is being allocated because some scalers may write
 144          * out of bounds. */
 145         dstStride[i] = FFALIGN(dstStride[i], 16);
 146         if (dstStride[i])
 147             dst[i] = av_mallocz(dstStride[i] * dstH + 16);
 148         if (dstStride[i] && !dst[i]) {
 149             perror("Malloc");
 150             res = -1;
 151
 152             goto end;
 153         }
 154     }
 155
 156     dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
 157                                 flags, NULL, NULL, NULL);
 158     if (!dstContext) {
 159         fprintf(stderr, "Failed to get %s ---> %s\n",
 160                 desc_src->name, desc_dst->name);
 161         res = -1;
 162         goto end;
 163     }
 164
 165     printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
 166            desc_src->name, srcW, srcH,
 167            desc_dst->name, dstW, dstH,
 168            flags);
 169     fflush(stdout);
 170
 171     sws_scale(dstContext, (const uint8_t * const*)src, srcStride, 0, srcH, dst, dstStride);
 172
 173     for (i = 0; i < 4 && dstStride[i]; i++)
 174         crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
 175                      dstStride[i] * dstH);
 176
 177     if (r && crc == r->crc) {
 178         ssdY = r->ssdY;
 179         ssdU = r->ssdU;
 180         ssdV = r->ssdV;
 181         ssdA = r->ssdA;
 182     } else {
 183         for (i = 0; i < 4; i++) {
 184             refStride[i] = FFALIGN(refStride[i], 16);
 185             if (refStride[i])
 186                 out[i] = av_mallocz(refStride[i] * h);
 187             if (refStride[i] && !out[i]) {
 188                 perror("Malloc");
 189                 res = -1;
 190                 goto end;
 191             }
 192         }
 193         outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
 194                                     AV_PIX_FMT_YUVA420P, SWS_BILINEAR,
 195                                     NULL, NULL, NULL);
 196         if (!outContext) {
 197             fprintf(stderr, "Failed to get %s ---> %s\n",
 198                     desc_dst->name,
 199                     desc_yuva420p->name);
 200             res = -1;
 201             goto end;
 202         }
 203         sws_scale(outContext, (const uint8_t * const*)dst, dstStride, 0, dstH, out, refStride);
 204
 205         ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
 206         if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
 207             //FIXME check that output is really gray
 208             ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
 209                           (w + 1) >> 1, (h + 1) >> 1);
 210             ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
 211                           (w + 1) >> 1, (h + 1) >> 1);
 212         }
 213         if (isALPHA(srcFormat) && isALPHA(dstFormat))
 214             ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
 215
 216         ssdY /= w * h;
 217         ssdU /= w * h / 4;
 218         ssdV /= w * h / 4;
 219         ssdA /= w * h;
 220
 221         sws_freeContext(outContext);
 222
 223         for (i = 0; i < 4; i++)
 224             if (refStride[i])
 225                 av_free(out[i]);
 226     }
 227
 228     printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
 229            crc, ssdY, ssdU, ssdV, ssdA);
 230
 231 end:
 232     sws_freeContext(dstContext);
 233
 234     for (i = 0; i < 4; i++)
 235         if (dstStride[i])
 236             av_free(dst[i]);
 237
 238     return res;
 239 }
 240
 241 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
 242                      enum AVPixelFormat srcFormat_in,
 243                      enum AVPixelFormat dstFormat_in)
 244 {
 245     const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
 246                           SWS_X, SWS_POINT, SWS_AREA, 0 };
 247     const int srcW   = w;
 248     const int srcH   = h;
 249     const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
 250     const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
 251     enum AVPixelFormat srcFormat, dstFormat;
 252     const AVPixFmtDescriptor *desc_src, *desc_dst;
 253
 254     for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
 255          srcFormat < AV_PIX_FMT_NB; srcFormat++) {
 256         if (!sws_isSupportedInput(srcFormat) ||
 257             !sws_isSupportedOutput(srcFormat))
 258             continue;
 259
 260         desc_src = av_pix_fmt_desc_get(srcFormat);
 261
 262         for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
 263              dstFormat < AV_PIX_FMT_NB; dstFormat++) {
 264             int i, j, k;
 265             int res = 0;
 266
 267             if (!sws_isSupportedInput(dstFormat) ||
 268                 !sws_isSupportedOutput(dstFormat))
 269                 continue;
 270
 271             desc_dst = av_pix_fmt_desc_get(dstFormat);
 272
 273             printf("%s -> %s\n", desc_src->name, desc_dst->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             if (dstFormat_in != AV_PIX_FMT_NONE)
 284                 break;
 285         }
 286         if (srcFormat_in != AV_PIX_FMT_NONE)
 287             break;
 288     }
 289 }
 290
 291 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
 292                     enum AVPixelFormat srcFormat_in,
 293                     enum AVPixelFormat dstFormat_in)
 294 {
 295     char buf[256];
 296
 297     while (fgets(buf, sizeof(buf), fp)) {
 298         struct Results r;
 299         enum AVPixelFormat srcFormat;
 300         char srcStr[12];
 301         int srcW, srcH;
 302         enum AVPixelFormat dstFormat;
 303         char dstStr[12];
 304         int dstW, dstH;
 305         int flags;
 306         int ret;
 307
 308         ret = sscanf(buf,
 309                      " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
 310                      " SSD=%"SCNd64 ", %"SCNd64 ", %"SCNd64 ", %"SCNd64 "\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 == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE ||
 322             srcW > 8192U || srcH > 8192U || dstW > 8192U || dstH > 8192U) {
 323             fprintf(stderr, "malformed input file\n");
 324             return -1;
 325         }
 326         if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
 327             (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
 328             continue;
 329         if (ret != 12) {
 330             printf("%s", buf);
 331             continue;
 332         }
 333
 334         doTest(ref, refStride, w, h,
 335                srcFormat, dstFormat,
 336                srcW, srcH, dstW, dstH, flags,
 337                &r);
 338     }
 339
 340     return 0;
 341 }
 342
 343 #define W 96
 344 #define H 96
 345
 346 int main(int argc, char **argv)
 347 {
 348     enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
 349     enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
 350     uint8_t *rgb_data   = av_malloc(W * H * 4);
 351     const uint8_t * const rgb_src[4] = { rgb_data, NULL, NULL, NULL };
 352     int rgb_stride[4]   = { 4 * W, 0, 0, 0 };
 353     uint8_t *data       = av_malloc(4 * W * H);
 354     uint8_t *src[4]     = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
 355     int stride[4]       = { W, W, W, W };
 356     int x, y;
 357     struct SwsContext *sws;
 358     AVLFG rand;
 359     int res = -1;
 360     int i;
 361     FILE *fp = NULL;
 362
 363     if (!rgb_data || !data)
 364         return -1;
 365
 366     for (i = 1; i < argc; i += 2) {
 367         if (argv[i][0] != '-' || i + 1 == argc)
 368             goto bad_option;
 369         if (!strcmp(argv[i], "-ref")) {
 370             fp = fopen(argv[i + 1], "r");
 371             if (!fp) {
 372                 fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
 373                 goto error;
 374             }
 375         } else if (!strcmp(argv[i], "-src")) {
 376             srcFormat = av_get_pix_fmt(argv[i + 1]);
 377             if (srcFormat == AV_PIX_FMT_NONE) {
 378                 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
 379                 return -1;
 380             }
 381         } else if (!strcmp(argv[i], "-dst")) {
 382             dstFormat = av_get_pix_fmt(argv[i + 1]);
 383             if (dstFormat == AV_PIX_FMT_NONE) {
 384                 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
 385                 return -1;
 386             }
 387         } else {
 388 bad_option:
 389             fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
 390             goto error;
 391         }
 392     }
 393
 394     sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
 395                          AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
 396
 397     av_lfg_init(&rand, 1);
 398
 399     for (y = 0; y < H; y++)
 400         for (x = 0; x < W * 4; x++)
 401             rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
 402     sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
 403     sws_freeContext(sws);
 404     av_free(rgb_data);
 405
 406     if(fp) {
 407         res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
 408         fclose(fp);
 409     } else {
 410         selfTest(src, stride, W, H, srcFormat, dstFormat);
 411         res = 0;
 412     }
 413 error:
 414     av_free(data);
 415
 416     return res;
 417 }