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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 "encoder.hpp"
// 3rd party headers
#include "FLAC/stream_encoder.h"
// standard headers
#include <array>
#include <cstdio>
#include <cstdlib>
#include <cstring>
namespace encoder
{
/// Flac encoder
class FlacEncoder : public Encoder
{
public:
/// c'tor
explicit FlacEncoder(std::string codecOptions);
/// d'tor
~FlacEncoder() override;
void encode(const msg::PcmChunk& chunk) override;
std::string getAvailableOptions() const override;
std::string getDefaultOptions() const override;
std::string name() const override;
/// FLAC write callback
FLAC__StreamEncoderWriteStatus write_callback(const FLAC__StreamEncoder* encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples,
unsigned current_frame);
private:
void initEncoder() override;
FLAC__StreamEncoder* encoder_;
std::array<FLAC__StreamMetadata*, 2> metadata_;
FLAC__int32* pcmBuffer_;
int pcmBufferSize_;
size_t encodedSamples_;
std::shared_ptr<msg::PcmChunk> flacChunk_;
};
} // namespace encoder
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