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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's 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.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// 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 Intel Corporation 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.
//
//M*/
#include "precomp.hpp"
#include "grfmt_hdr.hpp"
#include "rgbe.hpp"
namespace cv
{
HdrDecoder::HdrDecoder()
{
m_signature = "#?RGBE";
m_signature_alt = "#?RADIANCE";
file = NULL;
m_type = CV_32FC3;
}
HdrDecoder::~HdrDecoder()
{
}
size_t HdrDecoder::signatureLength() const
{
return m_signature.size() > m_signature_alt.size() ?
m_signature.size() : m_signature_alt.size();
}
bool HdrDecoder::readHeader()
{
file = fopen(m_filename.c_str(), "rb");
if(!file) {
return false;
}
RGBE_ReadHeader(file, &m_width, &m_height, NULL);
if(m_width <= 0 || m_height <= 0) {
fclose(file);
file = NULL;
return false;
}
return true;
}
bool HdrDecoder::readData(Mat& _img)
{
Mat img(m_height, m_width, CV_32FC3);
if(!file) {
if(!readHeader()) {
return false;
}
}
RGBE_ReadPixels_RLE(file, const_cast<float*>(img.ptr<float>()), img.cols, img.rows);
fclose(file); file = NULL;
if(_img.depth() == img.depth()) {
img.convertTo(_img, _img.type());
} else {
img.convertTo(_img, _img.type(), 255);
}
return true;
}
bool HdrDecoder::checkSignature( const String& signature ) const
{
if(signature.size() >= m_signature.size() &&
(!memcmp(signature.c_str(), m_signature.c_str(), m_signature.size()) ||
!memcmp(signature.c_str(), m_signature_alt.c_str(), m_signature_alt.size())))
return true;
return false;
}
ImageDecoder HdrDecoder::newDecoder() const
{
return new HdrDecoder;
}
HdrEncoder::HdrEncoder()
{
m_description = "Radiance HDR (*.hdr;*.pic)";
}
HdrEncoder::~HdrEncoder()
{
}
bool HdrEncoder::write( const Mat& _img, const std::vector<int>& params )
{
Mat img;
CV_Assert(img.channels() == 3 || img.channels() == 1);
if(img.channels() == 1) {
std::vector<Mat> splitted(3, _img);
merge(splitted, img);
} else {
_img.copyTo(img);
}
if(img.depth() != CV_32F) {
img.convertTo(img, CV_32FC3, 1/255.0f);
}
CV_Assert(params.empty() || params[0] == HDR_NONE || params[0] == HDR_RLE);
FILE *fout = fopen(m_filename.c_str(), "wb");
if(!fout) {
return false;
}
RGBE_WriteHeader(fout, img.cols, img.rows, NULL);
if(params.empty() || params[0] == HDR_RLE) {
RGBE_WritePixels_RLE(fout, const_cast<float*>(img.ptr<float>()), img.cols, img.rows);
} else {
RGBE_WritePixels(fout, const_cast<float*>(img.ptr<float>()), img.cols * img.rows);
}
fclose(fout);
return true;
}
ImageEncoder HdrEncoder::newEncoder() const
{
return new HdrEncoder;
}
bool HdrEncoder::isFormatSupported( int depth ) const {
return depth != CV_64F;
}
}