ref: 130c682c29d6a5767770322f2d958357eb19380e
dir: /codec/common/src/utils.cpp/
/*!
* \copy
* Copyright (c) 2009-2013, Cisco Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
* \file utils.c
*
* \brief common tool/function utilization
*
* \date 03/10/2009 Created
*
*************************************************************************************
*/
#include "utils.h"
#include "crt_util_safe_x.h" // Safe CRT routines like utils for cross platforms
float WelsCalcPsnr (const void* kpTarPic,
const int32_t kiTarStride,
const void* kpRefPic,
const int32_t kiRefStride,
const int32_t kiWidth,
const int32_t kiHeight);
void WelsLog (SLogContext* logCtx, int32_t iLevel, const char* kpFmt, ...) {
va_list vl;
va_start (vl, kpFmt);
logCtx->pfLog (logCtx->pLogCtx, iLevel, kpFmt, vl);
va_end (vl);
}
#ifndef CALC_PSNR
#define CONST_FACTOR_PSNR (10.0 / log(10.0)) // for good computation
#define CALC_PSNR(w, h, s) ((float)(CONST_FACTOR_PSNR * log( 65025.0 * w * h / iSqe )))
#endif//CALC_PSNR
/*
* PSNR calculation routines
*/
/*!
*************************************************************************************
* \brief PSNR calculation utilization in Wels
*
* \param pTarPic target picture to be calculated in Picture pData format
* \param iTarStride stride of target picture pData pBuffer
* \param pRefPic base referencing picture samples
* \param iRefStride stride of reference picture pData pBuffer
* \param iWidth picture iWidth in pixel
* \param iHeight picture iHeight in pixel
*
* \return actual PSNR result;
*
* \note N/A
*************************************************************************************
*/
float WelsCalcPsnr (const void* kpTarPic,
const int32_t kiTarStride,
const void* kpRefPic,
const int32_t kiRefStride,
const int32_t kiWidth,
const int32_t kiHeight) {
int64_t iSqe = 0;
int32_t x, y;
uint8_t* pTar = (uint8_t*)kpTarPic;
uint8_t* pRef = (uint8_t*)kpRefPic;
if (NULL == pTar || NULL == pRef)
return (-1.0f);
for (y = 0; y < kiHeight; ++ y) { // OPTable !!
for (x = 0; x < kiWidth; ++ x) {
const int32_t kiT = pTar[y * kiTarStride + x] - pRef[y * kiRefStride + x];
iSqe += kiT * kiT;
}
}
if (0 == iSqe) {
return (99.99f);
}
return CALC_PSNR (kiWidth, kiHeight, iSqe);
}