• Dmitry Kovalev's avatar
    Code cleanup. · 5da85349
    Dmitry Kovalev authored
    Removing redundant 'extern' keyword from function declarations and making
    function arguments lower case.
    
    Change-Id: Idae9a2183b067f2b6c85ad84738d275e8bbff9d9
    5da85349
vp9_psnr.c 754 bytes
/*
 *  Copyright (c) 2010 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.
 */
#include "vpx_scale/yv12config.h"
#include "math.h"
#define MAX_PSNR 100
double vp9_mse2psnr(double samples, double peak, double mse) {
  double psnr;
  if (mse > 0.0)
    psnr = 10.0 * log10(peak * peak * samples / mse);
  else
    psnr = MAX_PSNR;  // Limit to prevent / 0
  if (psnr > MAX_PSNR)
    psnr = MAX_PSNR;
  return psnr;