The Tor Browser / file comparison
comparison: media/libyuv/util/psnr.h
media/libyuv/util/psnr.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:0f8eee49ea7f |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 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 // Get PSNR for video sequence. Assuming RAW 4:2:0 Y:Cb:Cr format | |
| 12 | |
| 13 #ifndef UTIL_PSNR_H_ // NOLINT | |
| 14 #define UTIL_PSNR_H_ | |
| 15 | |
| 16 #ifdef __cplusplus | |
| 17 extern "C" { | |
| 18 #endif | |
| 19 | |
| 20 #if !defined(INT_TYPES_DEFINED) && !defined(UINT8_TYPE_DEFINED) | |
| 21 typedef unsigned char uint8; | |
| 22 #define UINT8_TYPE_DEFINED | |
| 23 #endif | |
| 24 | |
| 25 static const double kMaxPSNR = 128.0; | |
| 26 | |
| 27 // PSNR formula: psnr = 10 * log10 (Peak Signal^2 * size / sse). | |
| 28 // Returns 128.0 (kMaxPSNR) if sse is 0 (perfect match). | |
| 29 double ComputePSNR(double sse, double size); | |
| 30 | |
| 31 // Computer Sum of Squared Error (SSE). | |
| 32 // Pass this to ComputePSNR for final result. | |
| 33 double ComputeSumSquareError(const uint8* org, const uint8* rec, int size); | |
| 34 | |
| 35 #ifdef __cplusplus | |
| 36 } // extern "C" | |
| 37 #endif | |
| 38 | |
| 39 #endif // UTIL_PSNR_H_ // NOLINT |
