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68 lines
1.9 KiB
68 lines
1.9 KiB
/*
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* Copyright 2012 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "libyuv/basic_types.h"
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#include "libyuv/compare.h"
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#include "libyuv/version.h"
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int main(int argc, char** argv) {
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if (argc < 1) {
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printf("libyuv compare v%d\n", LIBYUV_VERSION);
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printf("compare file1.yuv file2.yuv\n");
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return -1;
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}
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char* name1 = argv[1];
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char* name2 = (argc > 2) ? argv[2] : NULL;
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FILE* fin1 = fopen(name1, "rb");
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FILE* fin2 = name2 ? fopen(name2, "rb") : NULL;
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const int kBlockSize = 32768;
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uint8_t buf1[kBlockSize];
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uint8_t buf2[kBlockSize];
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uint32_t hash1 = 5381;
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uint32_t hash2 = 5381;
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uint64_t sum_square_err = 0;
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uint64_t size_min = 0;
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int amt1 = 0;
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int amt2 = 0;
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do {
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amt1 = static_cast<int>(fread(buf1, 1, kBlockSize, fin1));
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if (amt1 > 0) {
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hash1 = libyuv::HashDjb2(buf1, amt1, hash1);
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}
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if (fin2) {
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amt2 = static_cast<int>(fread(buf2, 1, kBlockSize, fin2));
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if (amt2 > 0) {
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hash2 = libyuv::HashDjb2(buf2, amt2, hash2);
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}
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int amt_min = (amt1 < amt2) ? amt1 : amt2;
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size_min += amt_min;
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sum_square_err += libyuv::ComputeSumSquareError(buf1, buf2, amt_min);
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}
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} while (amt1 > 0 || amt2 > 0);
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printf("hash1 %x", hash1);
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if (fin2) {
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printf(", hash2 %x", hash2);
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double mse =
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static_cast<double>(sum_square_err) / static_cast<double>(size_min);
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printf(", mse %.2f", mse);
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double psnr = libyuv::SumSquareErrorToPsnr(sum_square_err, size_min);
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printf(", psnr %.2f\n", psnr);
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fclose(fin2);
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}
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fclose(fin1);
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}
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