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/***
This file is part of snapcast
Copyright (C) 2014-2024 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 "common/message/codec_header.hpp"
#include "common/message/pcm_chunk.hpp"
#include "common/sample_format.hpp"
// 3rd party headers
// standard headers
namespace decoder
{
/// Base class for an audio decoder
class Decoder
{
public:
/// c'tor
Decoder() = default;
/// d'tor
virtual ~Decoder() = default;
/// decode encoded data stored in @p chunk, and write decoded data back into @p chunk
/// return true, if data could be decoded and written back into @p chunk
virtual bool decode(msg::PcmChunk* chunk) = 0;
/// Set the codec header, stored in @p chunk.
/// The CodecHeader is sent to every newly connected streaming client as first audio message.
/// @return the sampleformat, decoded from the header
virtual SampleFormat setHeader(msg::CodecHeader* chunk) = 0;
};
} // namespace decoder
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