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63 lines
2 KiB
C++
63 lines
2 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2019 Johannes Pohl
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef OGG_DECODER_H
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#define OGG_DECODER_H
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#include "decoder.h"
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#ifdef HAS_TREMOR
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#include <tremor/ivorbiscodec.h>
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#else
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#include <vorbis/codec.h>
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#endif
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#include <ogg/ogg.h>
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class OggDecoder : public Decoder
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{
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public:
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OggDecoder();
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~OggDecoder() override;
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bool decode(msg::PcmChunk* chunk) override;
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SampleFormat setHeader(msg::CodecHeader* chunk) override;
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private:
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bool decodePayload(msg::PcmChunk* chunk);
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template <typename T>
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T clip(const T& value, const T& lower, const T& upper) const
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{
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if (value > upper)
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return upper;
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if (value < lower)
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return lower;
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return value;
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}
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ogg_sync_state oy; /// sync and verify incoming physical bitstream
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ogg_stream_state os; /// take physical pages, weld into a logical stream of packets
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ogg_page og; /// one Ogg bitstream page. Vorbis packets are inside
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ogg_packet op; /// one raw packet of data for decode
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vorbis_info vi; /// struct that stores all the static vorbis bitstream settings
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vorbis_comment vc; /// struct that stores all the bitstream user comments
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vorbis_dsp_state vd; /// central working state for the packet->PCM decoder
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vorbis_block vb; /// local working space for packet->PCM decode
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SampleFormat sampleFormat_;
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};
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#endif
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