35 lines
1005 B
C++
35 lines
1005 B
C++
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/*
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* Copyright (c) 2014 The WebM 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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#ifndef VPX_INTERNAL_VPX_PSNR_H_
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#define VPX_INTERNAL_VPX_PSNR_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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// TODO(dkovalev) change vpx_sse_to_psnr signature: double -> int64_t
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/*!\brief Converts SSE to PSNR
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*
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* Converts sum of squared errros (SSE) to peak signal-to-noise ratio (PNSR).
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*
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* \param[in] samples Number of samples
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* \param[in] peak Max sample value
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* \param[in] sse Sum of squared errors
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*/
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double vpx_sse_to_psnr(double samples, double peak, double sse);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VPX_INTERNAL_VPX_PSNR_H_
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