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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: 19 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 LSP_PLUG_IN_MM_INAUDIOFILESTREAM_H_
#define LSP_PLUG_IN_MM_INAUDIOFILESTREAM_H_
#include <lsp-plug.in/runtime/version.h>
#include <lsp-plug.in/common/status.h>
#include <lsp-plug.in/io/Path.h>
#include <lsp-plug.in/mm/IInAudioStream.h>
#include <lsp-plug.in/runtime/LSPString.h>
#ifdef USE_LIBSNDFILE
#include <sndfile.h>
#endif /* USE_LIBSNDFILE */
namespace lsp
{
namespace mm
{
#ifndef USE_LIBSNDFILE
struct WAVEFILE;
#endif /* USE_LIBSNDFILE */
class InAudioFileStream: public IInAudioStream
{
private:
InAudioFileStream & operator = (const InAudioFileStream &);
protected:
#ifdef USE_LIBSNDFILE
typedef SNDFILE handle_t;
#else
typedef struct WAVEFILE handle_t;
#endif
protected:
// Platform-specific parameters
handle_t *hHandle;
audio_stream_t sFormat;
bool bSeekable;
protected:
#ifdef USE_LIBSNDFILE
static status_t decode_sf_error(SNDFILE *fd);
#else
ssize_t read_acm_convert(void *dst, size_t nframes, size_t fmt);
#endif
virtual ssize_t direct_read(void *dst, size_t nframes, size_t fmt) override;
virtual size_t select_format(size_t fmt) override;
status_t do_close();
static status_t close_handle(handle_t *h);
public:
explicit InAudioFileStream();
virtual ~InAudioFileStream() override;
public:
/**
* Open audio stream
* @param path path to the audio file
* @return status of operation
*/
virtual status_t open(const char *path);
/**
* Open audio stream
* @param path path to the audio file
* @return status of operation
*/
virtual status_t open(const LSPString *path);
/**
* Open audio stream
* @param path path to the audio file
* @return status of operation
*/
virtual status_t open(const io::Path *path);
public:
virtual status_t info(mm::audio_stream_t *dst) const override;
virtual size_t sample_rate() const override;
virtual size_t channels() const override;
virtual wssize_t length() const override;
virtual size_t format() const override;
virtual status_t close() override;
virtual wssize_t skip(wsize_t nframes) override;
virtual wssize_t seek(wsize_t nframes) override;
};
} /* namespace mm */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_MM_INAUDIOFILESTREAM_H_ */
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