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/***
This file is part of snapcast
Copyright (C) 2014-2025 Johannes Pohl
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 3 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, see <http://www.gnu.org/licenses/>.
***/
#pragma once
// local headers
#include "decoder.hpp"
// 3rd party headers
#include <FLAC/stream_decoder.h>
// standard headers
#include <memory>
#include <mutex>
namespace decoder
{
/// Cache internal decoder status
struct CacheInfo
{
/// Reset current cache info
void reset()
{
isCachedChunk_ = true;
cachedBlocks_ = 0;
}
bool isCachedChunk_{true}; ///< is the current block cached
size_t cachedBlocks_{0}; ///< number of cached blocks
size_t sampleRate_{0}; ///< sample rate of the block
};
/// Flac decoder
class FlacDecoder : public Decoder
{
public:
/// c'tor
FlacDecoder();
/// d'tor
~FlacDecoder() override;
bool decode(msg::PcmChunk* chunk) override;
SampleFormat setHeader(msg::CodecHeader* chunk) override;
/// Flac internal cache info
CacheInfo cacheInfo_;
/// Last decoder error
std::unique_ptr<FLAC__StreamDecoderErrorStatus> lastError_;
private:
std::mutex mutex_;
};
} // namespace decoder
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