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/*******************************************************************************
* Copyright 2015-2016 Juan Francisco Crespo Galán
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
#include "fx/HRTFLoader.h"
#include "file/File.h"
#include "Exception.h"
#include <dirent.h>
#include <exception>
AUD_NAMESPACE_BEGIN
std::shared_ptr<HRTF> HRTFLoader::loadLeftHRTFs(std::shared_ptr<FFTPlan> plan, const std::string& fileExtension, const std::string& path)
{
std::shared_ptr<HRTF> hrtfs(std::make_shared<HRTF>(plan));
loadHRTFs(hrtfs, 'L', fileExtension, path);
return hrtfs;
}
std::shared_ptr<HRTF> HRTFLoader::loadRightHRTFs(std::shared_ptr<FFTPlan> plan, const std::string& fileExtension, const std::string& path)
{
std::shared_ptr<HRTF> hrtfs(std::make_shared<HRTF>(plan));
loadHRTFs(hrtfs, 'R', fileExtension, path);
return hrtfs;
}
std::shared_ptr<HRTF> HRTFLoader::loadLeftHRTFs(const std::string& fileExtension, const std::string& path)
{
std::shared_ptr<HRTF> hrtfs(std::make_shared<HRTF>());
loadHRTFs(hrtfs, 'L', fileExtension, path);
return hrtfs;
}
std::shared_ptr<HRTF> HRTFLoader::loadRightHRTFs(const std::string& fileExtension, const std::string& path)
{
std::shared_ptr<HRTF> hrtfs(std::make_shared<HRTF>());
loadHRTFs(hrtfs, 'R', fileExtension, path);
return hrtfs;
}
void HRTFLoader::loadHRTFs(std::shared_ptr<HRTF> hrtfs, char ear, const std::string& fileExtension, const std::string& path)
{
std::string readpath = path;
if(path == "")
readpath = ".";
DIR* dir = opendir(path.c_str());
if(!dir)
return;
float azim, elev;
while(dirent* entry = readdir(dir))
{
std::string filename = entry->d_name;
if(filename.front() == ear && filename.length() >= fileExtension.length() && filename.substr(filename.length() - fileExtension.length()) == fileExtension)
{
try
{
elev = std::stof(filename.substr(1, filename.find("e") - 1));
azim = std::stof(filename.substr(filename.find("e") + 1, filename.find("a") - filename.find("e") - 1));
if(ear == 'L')
azim = 360 - azim;
}
catch(std::exception& e)
{
AUD_THROW(FileException, "The HRTF name doesn't follow the naming scheme: " + filename);
}
hrtfs->addImpulseResponse(std::make_shared<StreamBuffer>(std::make_shared<File>(readpath + "/" + filename)), azim, elev);
}
}
closedir(dir);
return;
}
AUD_NAMESPACE_END
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