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comparison: media/libyuv/util/compare.cc
media/libyuv/util/compare.cc
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| -1:000000000000 | 0:6508176945c2 |
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| 1 /* | |
| 2 * Copyright 2012 The LibYuv Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <stdio.h> | |
| 12 #include <stdlib.h> | |
| 13 #include <string.h> | |
| 14 #include <time.h> | |
| 15 | |
| 16 #include "libyuv/basic_types.h" | |
| 17 #include "libyuv/compare.h" | |
| 18 #include "libyuv/version.h" | |
| 19 | |
| 20 int main(int argc, char** argv) { | |
| 21 if (argc < 1) { | |
| 22 printf("libyuv compare v%d\n", LIBYUV_VERSION); | |
| 23 printf("compare file1.yuv file2.yuv\n"); | |
| 24 return -1; | |
| 25 } | |
| 26 char* name1 = argv[1]; | |
| 27 char* name2 = (argc > 2) ? argv[2] : NULL; | |
| 28 FILE* fin1 = fopen(name1, "rb"); | |
| 29 FILE* fin2 = name2 ? fopen(name2, "rb") : NULL; | |
| 30 | |
| 31 const int kBlockSize = 32768; | |
| 32 uint8 buf1[kBlockSize]; | |
| 33 uint8 buf2[kBlockSize]; | |
| 34 uint32 hash1 = 5381; | |
| 35 uint32 hash2 = 5381; | |
| 36 uint64 sum_square_err = 0; | |
| 37 uint64 size_min = 0; | |
| 38 int amt1 = 0; | |
| 39 int amt2 = 0; | |
| 40 do { | |
| 41 amt1 = static_cast<int>(fread(buf1, 1, kBlockSize, fin1)); | |
| 42 if (amt1 > 0) hash1 = libyuv::HashDjb2(buf1, amt1, hash1); | |
| 43 if (fin2) { | |
| 44 amt2 = static_cast<int>(fread(buf2, 1, kBlockSize, fin2)); | |
| 45 if (amt2 > 0) hash2 = libyuv::HashDjb2(buf2, amt2, hash2); | |
| 46 int amt_min = (amt1 < amt2) ? amt1 : amt2; | |
| 47 size_min += amt_min; | |
| 48 sum_square_err += libyuv::ComputeSumSquareError(buf1, buf2, amt_min); | |
| 49 } | |
| 50 } while (amt1 > 0 || amt2 > 0); | |
| 51 | |
| 52 printf("hash1 %x", hash1); | |
| 53 if (fin2) { | |
| 54 printf(", hash2 %x", hash2); | |
| 55 double mse = static_cast<double>(sum_square_err) / | |
| 56 static_cast<double>(size_min); | |
| 57 printf(", mse %.2f", mse); | |
| 58 double psnr = libyuv::SumSquareErrorToPsnr(sum_square_err, size_min); | |
| 59 printf(", psnr %.2f\n", psnr); | |
| 60 fclose(fin2); | |
| 61 } | |
| 62 fclose(fin1); | |
| 63 } |
