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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: 14 янв. 2018 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 LSP_PLUG_IN_FMT_LSPC_CHUNKWRITER_H_
#define LSP_PLUG_IN_FMT_LSPC_CHUNKWRITER_H_
#include <lsp-plug.in/runtime/version.h>
#include <lsp-plug.in/fmt/lspc/ChunkAccessor.h>
#include <lsp-plug.in/fmt/lspc/ChunkWriterStream.h>
#include <lsp-plug.in/fmt/lspc/lspc.h>
namespace lsp
{
namespace lspc
{
class ChunkWriter: public ChunkAccessor
{
private:
ChunkWriter & operator = (const ChunkWriter &);
protected:
friend class File;
enum flush_t
{
F_FORCE = 1 << 0,
F_LAST = 1 << 1
};
protected:
size_t nChunksOut;
wssize_t nPosition;
ChunkWriterStream sStream;
protected:
status_t do_flush(size_t flags);
protected:
explicit ChunkWriter(Resource *fd, uint32_t magic);
public:
virtual ~ChunkWriter();
public:
/**
* Obtain access to chunk writer as a stream.
* @return pointer to the stream
*/
inline io::IOutStream *stream() { return &sStream; }
/**
* Get current write position in bytes
* @return actual position from the beginning of the chunk including header
*/
inline wssize_t position() const { return nPosition; }
public:
/**
* Write chunk data header to LSPC chunk.
* @param buf buffer containing header
* @return status of operation
*/
virtual status_t write_header(const void *buf);
/**
* Write data to LSPC chunk
* @param buf buffer to write
* @param count number of bytes to write
* @return status of operation
*/
virtual status_t write(const void *buf, size_t count);
/**
* Flush all buffers to file
* @return status of operation
*/
virtual status_t flush();
/**
* Close chunk writer
* @return status of operation
*/
virtual status_t close();
};
}
} /* namespace lsp */
#endif /* LSP_PLUG_IN_FMT_LSPC_CHUNKWRITER_H_ */
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