mirror of
https://github.com/badaix/snapcast.git
synced 2025-04-29 10:17:16 +02:00
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/***
|
|
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
|
|
#ifdef HAS_TREMOR
|
|
#include <tremor/ivorbiscodec.h>
|
|
#else
|
|
#include <vorbis/codec.h>
|
|
#endif
|
|
#include <ogg/ogg.h>
|
|
|
|
// standard headers
|
|
#include <mutex>
|
|
|
|
|
|
namespace decoder
|
|
{
|
|
|
|
/// Ogg decoder
|
|
class OggDecoder : public Decoder
|
|
{
|
|
public:
|
|
/// c'tor
|
|
OggDecoder();
|
|
/// d'tor
|
|
~OggDecoder() override;
|
|
|
|
bool decode(msg::PcmChunk* chunk) override;
|
|
SampleFormat setHeader(msg::CodecHeader* chunk) override;
|
|
|
|
private:
|
|
bool decodePayload(msg::PcmChunk* chunk);
|
|
template <typename T, typename IN_TYPE>
|
|
T clip(const IN_TYPE& value, const T& lower, const T& upper) const
|
|
{
|
|
auto val = static_cast<int64_t>(value);
|
|
if (val > upper)
|
|
return upper;
|
|
if (val < lower)
|
|
return lower;
|
|
return static_cast<T>(value);
|
|
}
|
|
|
|
ogg_sync_state oy; ///< sync and verify incoming physical bitstream
|
|
ogg_stream_state os; ///< take physical pages, weld into a logical stream of packets
|
|
ogg_page og; ///< one Ogg bitstream page. Vorbis packets are inside
|
|
ogg_packet op; ///< one raw packet of data for decode
|
|
|
|
vorbis_info vi; ///< struct that stores all the static vorbis bitstream settings
|
|
vorbis_comment vc; ///< struct that stores all the bitstream user comments
|
|
vorbis_dsp_state vd; ///< central working state for the packet->PCM decoder
|
|
vorbis_block vb; ///< local working space for packet->PCM decode
|
|
|
|
SampleFormat sampleFormat_;
|
|
std::mutex mutex_;
|
|
};
|
|
|
|
} // namespace decoder
|