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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
*/
#pragma once
#include <memory>
#include <string>
#include "config.h"
#include "pcmengin.h"
class TFileAlreadyExists : public std::exception {
};
class TWavIOError : public std::exception {
const int ErrNum = 0;
const char* Text;
public:
TWavIOError(const char* str, int err)
: ErrNum(err)
, Text(str)
{
(void)ErrNum;
}
virtual const char* what() const throw() {
return Text;
}
};
template<class T>
class TWavPcmReader : public IPCMReader<T> {
public:
typedef std::function<void(TPCMBuffer<T>& data, const uint32_t size)> TLambda;
TLambda Lambda;
TWavPcmReader(TLambda lambda)
: Lambda(lambda)
{}
void Read(TPCMBuffer<T>& data , const uint32_t size) const override {
Lambda(data, size);
}
};
template<class T>
class TWavPcmWriter : public IPCMWriter<T> {
public:
typedef std::function<void(const TPCMBuffer<T>& data, const uint32_t size)> TLambda;
TLambda Lambda;
TWavPcmWriter(TLambda lambda)
: Lambda(lambda)
{}
void Write(const TPCMBuffer<T>& data , const uint32_t size) const override {
Lambda(data, size);
}
};
class IPCMProviderImpl {
public:
virtual ~IPCMProviderImpl() = default;
virtual size_t GetChannelsNum() const = 0;
virtual size_t GetSampleRate() const = 0;
virtual size_t GetTotalSamples() const = 0;
virtual size_t Read(TPCMBuffer<TFloat>& buf, size_t sz) = 0;
virtual size_t Write(const TPCMBuffer<TFloat>& buf, size_t sz) = 0;
};
//TODO: split for reader/writer
class TWav {
mutable std::unique_ptr<IPCMProviderImpl> Impl;
public:
enum Mode {
E_READ,
E_WRITE
};
TWav(const std::string& filename); // reading
TWav(const std::string& filename, int channels, int sampleRate); //writing
~TWav();
uint32_t GetChannelNum() const;
uint32_t GetSampleRate() const;
uint64_t GetTotalSamples() const;
template<class T>
IPCMReader<T>* GetPCMReader() const;
template<class T>
IPCMWriter<T>* GetPCMWriter();
};
typedef std::unique_ptr<TWav> TWavPtr;
template<class T>
IPCMReader<T>* TWav::GetPCMReader() const {
return new TWavPcmReader<T>([this](TPCMBuffer<T>& data, const uint32_t size) {
if (data.Channels() != Impl->GetChannelsNum())
throw TWrongReadBuffer();
if (size_t read = Impl->Read(data, size) != size) {
assert(read < size);
//fprintf(stderr, "to zero: %d\n", size-read);
data.Zero(read, size - read);
}
});
}
template<class T>
IPCMWriter<T>* TWav::GetPCMWriter() {
return new TWavPcmWriter<T>([this](const TPCMBuffer<T>& data, const uint32_t size) {
if (data.Channels() != Impl->GetChannelsNum())
throw TWrongReadBuffer();
if (Impl->Write(data, size) != size) {
fprintf(stderr, "can't write block\n");
}
});
}
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