1 /* 2 * Copyright (c) 2014 The WebM 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 #ifndef VPX_INTERNAL_VPX_PSNR_H_ 12 #define VPX_INTERNAL_VPX_PSNR_H_ 13 14 #ifdef __cplusplus 15 extern "C" { 16 #endif 17 18 // TODO(dkovalev) change vpx_sse_to_psnr signature: double -> int64_t 19 20 /*!\brief Converts SSE to PSNR 21 * 22 * Converts sum of squared errros (SSE) to peak signal-to-noise ratio (PNSR). 23 * 24 * \param[in] samples Number of samples 25 * \param[in] peak Max sample value 26 * \param[in] sse Sum of squared errors 27 */ 28 double vpx_sse_to_psnr(double samples, double peak, double sse); 29 30 #ifdef __cplusplus 31 } // extern "C" 32 #endif 33 34 #endif // VPX_INTERNAL_VPX_PSNR_H_ 35
