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/*
* Copyright 2003-2020 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_CACHE_INPUT_STREAM_HXX
#define MPD_CACHE_INPUT_STREAM_HXX
#include "Lease.hxx"
#include "input/InputStream.hxx"
/**
* An #InputStream implementation which reads data from an
* #InputCacheItem.
*/
class CacheInputStream final : public InputStream, InputCacheLease {
public:
CacheInputStream(InputCacheLease _lease, Mutex &_mutex) noexcept;
/* virtual methods from class InputStream */
void Check() override;
/* we don't need to implement Update() because all attributes
have been copied already in our constructor */
//void Update() noexcept;
void Seek(std::unique_lock<Mutex> &lock, offset_type offset) override;
bool IsEOF() const noexcept override;
/* we don't support tags */
// std::unique_ptr<Tag> ReadTag() override;
bool IsAvailable() const noexcept override;
size_t Read(std::unique_lock<Mutex> &lock,
void *ptr, size_t size) override;
private:
/* virtual methods from class InputCacheLease */
void OnInputCacheAvailable() noexcept override;
};
#endif