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113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
/*
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* AudioFileOgg.h - Audio-device which encodes wave-stream and writes it
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* into an OGG-file. This is used for song-export.
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*
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* Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef AUDIO_FILE_OGG_H
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#define AUDIO_FILE_OGG_H
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#include "lmmsconfig.h"
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#ifdef LMMS_HAVE_OGGVORBIS
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#include <vorbis/codec.h>
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#include "AudioFileDevice.h"
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class AudioFileOgg : public AudioFileDevice
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{
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public:
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AudioFileOgg( OutputSettings const & outputSettings,
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const ch_cnt_t _channels,
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bool & _success_ful,
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const QString & _file,
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AudioEngine* audioEngine );
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virtual ~AudioFileOgg();
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static AudioFileDevice * getInst( const QString & outputFilename,
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OutputSettings const & outputSettings,
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const ch_cnt_t channels,
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AudioEngine* audioEngine,
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bool & successful )
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{
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return new AudioFileOgg( outputSettings, channels, successful, outputFilename, audioEngine );
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}
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private:
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virtual void writeBuffer( const surroundSampleFrame * _ab,
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const fpp_t _frames,
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const float _master_gain ) override;
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bool startEncoding();
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void finishEncoding();
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inline int writePage();
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inline bitrate_t nominalBitrate() const
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{
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return getOutputSettings().getBitRateSettings().getBitRate();
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}
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inline bitrate_t minBitrate() const
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{
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if (nominalBitrate() > 64)
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{
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return nominalBitrate() - 64;
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}
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else
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{
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return 64;
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}
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}
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inline bitrate_t maxBitrate() const
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{
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return nominalBitrate() + 64;
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}
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private:
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bool m_ok;
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ch_cnt_t m_channels;
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sample_rate_t m_rate;
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uint32_t m_serialNo;
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vorbis_comment * m_comments;
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// encoding setup - init by init_ogg_encoding
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ogg_stream_state m_os;
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ogg_page m_og;
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ogg_packet m_op;
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vorbis_dsp_state m_vd;
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vorbis_block m_vb;
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vorbis_info m_vi;
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} ;
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#endif
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#endif
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