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https://chromium.googlesource.com/libyuv/libyuv
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7e389884a1
Append _t to all sized types. uint64 becomes uint64_t etc Bug: libyuv:774 Test: try bots build on all platforms Change-Id: Ide273d7f8012313d6610415d514a956d6f3a8cac Reviewed-on: https://chromium-review.googlesource.com/879922 Reviewed-by: Miguel Casas <mcasas@chromium.org>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* Copyright 2013 The LibYuv 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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// Get PSNR for video sequence. Assuming RAW 4:2:0 Y:Cb:Cr format
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#ifndef UTIL_PSNR_H_ // NOLINT
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#define UTIL_PSNR_H_
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#include <math.h> // For log10()
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(INT_TYPES_DEFINED) && !defined(UINT8_TYPE_DEFINED)
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typedef unsigned char uint8_t;
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#define UINT8_TYPE_DEFINED
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#endif
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static const double kMaxPSNR = 128.0;
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// libyuv provides this function when linking library for jpeg support.
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// TODO(fbarchard): make psnr lib compatible subset of libyuv.
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#if !defined(HAVE_JPEG)
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// Computer Sum of Squared Error (SSE).
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// Pass this to ComputePSNR for final result.
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double ComputeSumSquareError(const uint8_t* org, const uint8_t* rec, int size);
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#endif
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// PSNR formula: psnr = 10 * log10 (Peak Signal^2 * size / sse)
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// Returns 128.0 (kMaxPSNR) if sse is 0 (perfect match).
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double ComputePSNR(double sse, double size);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // UTIL_PSNR_H_ // NOLINT
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