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ea55f45 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /*
* Copyright 2017-2024 NVIDIA Corporation. All rights reserved.
*
* Please refer to the NVIDIA end user license agreement (EULA) associated
* with this source code for terms and conditions that govern your use of
* this software. Any use, reproduction, disclosure, or distribution of
* this software and related documentation outside the terms of the EULA
* is strictly prohibited.
*
*/
#pragma once
#include <inttypes.h>
#include <math.h>
template <typename T>
void SumSquareErrorFor420Planar(T *p0, T *p1, int nWidth, int nHeight, int64_t *py, int64_t *pu, int64_t *pv, int shift) {
int64_t y = 0, u = 0, v = 0, d;
for (int i = 0; i < nWidth * nHeight; i++) {
d = (p0[i] >> shift) - (p1[i] >> shift);
y += d * d;
}
p0 += nWidth * nHeight;
p1 += nWidth * nHeight;
for (int y = 0; y < nHeight / 2; y++) {
for (int x = 0; x < nWidth / 2; x++) {
d = (p0[y * nWidth / 2 + x] >> shift) - (p1[y * nWidth / 2 + x] >> shift);
u += d * d;
}
}
p0 += nWidth * nHeight / 4;
p1 += nWidth * nHeight / 4;
for (int y = 0; y < nHeight / 2; y++) {
for (int x = 0; x < nWidth / 2; x++) {
d = (p0[y * nWidth / 2 + x] >> shift) - (p1[y * nWidth / 2 + x] >> shift);
v += d * d;
}
}
*py = y;
*pu = u;
*pv = v;
}
inline double psnr(int64_t sse, int64_t n, double max) {
if (sse == 0) return 0;
return 10.0 * log10(max * max * n / sse);
}
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