ref: 1c0a9f36f15a83816aebe5395e19c21f3d545aa2
dir: /vpx/internal/vpx_psnr.h/
/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef VPX_INTERNAL_VPX_PSNR_H_
#define VPX_INTERNAL_VPX_PSNR_H_
#ifdef __cplusplus
extern "C" {
#endif
// TODO(dkovalev) change vpx_sse_to_psnr signature: double -> int64_t
/*!\brief Converts SSE to PSNR
*
* Converts sum of squared errros (SSE) to peak signal-to-noise ratio (PNSR).
*
* \param[in] samples Number of samples
* \param[in] peak Max sample value
* \param[in] sse Sum of squared errors
*/
double vpx_sse_to_psnr(double samples, double peak, double sse);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_INTERNAL_VPX_PSNR_H_