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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-runtime-lib
* Created on: 25 апр. 2020 г.
*
* lsp-runtime-lib 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 3 of the License, or
* any later version.
*
* lsp-runtime-lib 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 lsp-runtime-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_MM_MMIOWRITER_H_
#define PRIVATE_MM_MMIOWRITER_H_
#include <lsp-plug.in/runtime/version.h>
#ifndef USE_LIBSNDFILE
#include <lsp-plug.in/common/types.h>
#include <lsp-plug.in/common/status.h>
#include <lsp-plug.in/runtime/LSPString.h>
#include <windows.h>
#include <mmsystem.h>
#include <mmreg.h>
namespace lsp
{
namespace mm
{
/**
* Audio file writer using MMIO subsystem
*/
class MMIOWriter
{
private:
MMIOWriter & operator = (const MMIOWriter &);
protected:
HMMIO hMMIO;
wsize_t nWritePos;
wsize_t nDataSize;
wssize_t nFrames;
bool bSeekable;
MMCKINFO ckRiff;
MMCKINFO ckData;
MMCKINFO ckFact;
protected:
status_t finalize_riff_file();
status_t write_padded(const void *buf, size_t count);
public:
explicit MMIOWriter();
virtual ~MMIOWriter();
public:
/**
* Check whether reader is seekable
* @return true if reader is seekable
*/
inline bool seekable() const { return bSeekable; }
/**
* Set number of frames
* @param frames number of frames written
*/
inline void set_frames(wssize_t frames) { nFrames = frames; }
/**
* Open audio file for writing
* @param path path to the file
* @param fmt output audio format
* @param frames number of frames
* @return status of operation
*/
status_t open(const LSPString *path, WAVEFORMATEX *fmt, wssize_t frames);
/**
* Seek to the specified location
* @param offset offset in bytes from the beginning of data chunk
* @return actual offset in bytes from the beginning of data chunk
*/
wssize_t seek(wsize_t offset);
/**
* Write number of bytes into buffer
* @param buf pointer to buffer to write
* @param count number of bytes to write
* @return actual bytes written or negative error code
*/
ssize_t write(const void *buf, size_t count);
/**
* Close the file
* @return status of operation
*/
status_t close(status_t code = STATUS_OK);
/**
* Flush pending write operations
* @return status of operation
*/
status_t flush();
};
} /* namespace mm */
} /* namespace lsp */
#endif /* USE_LIBSNDFILE */
#endif /* PRIVATE_MM_MMIOWRITER_H_ */
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