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/*
* This file is part of AtracDEnc.
*
* AtracDEnc is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* AtracDEnc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with AtracDEnc; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "wav.h"
#include <sndfile.hh>
#include <algorithm>
static int fileext_to_libsndfmt(const std::string& filename) {
int fmt = SF_FORMAT_WAV; //default fmt
if (filename == "-")
return SF_FORMAT_AU;
size_t pos = filename.find_last_of(".");
if (pos == std::string::npos || pos == filename.size() - 1) //no dot or filename.
return fmt;
std::string ext = filename.substr(pos+1);
std::transform(ext.begin(), ext.end(), ext.begin(), ::toupper);
if (ext == "AU") {
fmt = SF_FORMAT_AU;
} else if (ext == "AIFF") {
fmt = SF_FORMAT_AIFF;
} else if (ext == "PCM" || ext == "RAW") {
fmt = SF_FORMAT_RAW;
}
return fmt;
}
class TPCMIOSndFile : public IPCMProviderImpl {
public:
TPCMIOSndFile(const std::string& filename)
: File(SndfileHandle(filename))
{
File.command(SFC_SET_NORM_DOUBLE /*| SFC_SET_NORM_FLOAT*/, nullptr, SF_TRUE);
}
TPCMIOSndFile(const std::string& filename, int channels, int sampleRate)
: File(SndfileHandle(filename, SFM_WRITE, fileext_to_libsndfmt(filename) | SF_FORMAT_PCM_16, channels, sampleRate))
{
File.command(SFC_SET_NORM_DOUBLE /*| SFC_SET_NORM_FLOAT*/, nullptr, SF_TRUE);
}
public:
size_t GetChannelsNum() const override {
return File.channels();
}
size_t GetSampleRate() const override {
return File.samplerate();
}
size_t GetTotalSamples() const override {
return File.frames();
}
size_t Read(TPCMBuffer& buf, size_t sz) override {
return File.readf(buf[0], sz);
}
size_t Write(const TPCMBuffer& buf, size_t sz) override {
return File.writef(buf[0], sz);
}
private:
mutable SndfileHandle File;
};
IPCMProviderImpl* CreatePCMIOReadImpl(const std::string& path) {
return new TPCMIOSndFile(path);
}
IPCMProviderImpl* CreatePCMIOWriteImpl(const std::string& path, int channels, int sampleRate) {
return new TPCMIOSndFile(path, channels, sampleRate);
}
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