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22de18909a
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@23 0778d3d1-df1d-0410-868b-ea421aaaa00d
169 lines
3.5 KiB
C++
169 lines
3.5 KiB
C++
/*
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* sample_buffer.h - container-class sampleBuffer
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*
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* Linux MultiMedia Studio
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* Copyright (c) 2004-2005 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _SAMPLE_BUFFER_H
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#define _SAMPLE_BUFFER_H
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#include "qt3support.h"
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#ifdef QT4
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#include <QObject>
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#include <QMutex>
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#else
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#include <qobject.h>
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#include <qmutex.h>
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#endif
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_SAMPLERATE_H
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#include <samplerate.h>
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#endif
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#include "mixer.h"
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#include "types.h"
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class QPainter;
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class sampleBuffer : public QObject
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{
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Q_OBJECT
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public:
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enum drawMethods
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{
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LINE_CONNECT,
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DOTS
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} ;
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sampleBuffer( const QString & _audio_file = "" );
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sampleBuffer( const sampleFrame * _data, Uint32 _frames );
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~sampleBuffer();
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bool FASTCALL play( sampleFrame * _ab, Uint32 _start_frame,
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Uint32 _frames =
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mixer::inst()->framesPerAudioBuffer(),
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float _freq = BASE_FREQ, bool _looped = FALSE,
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void * * _resampling_data = NULL );
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void FASTCALL drawWaves( QPainter & _p, QRect _dr,
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drawMethods _dm = LINE_CONNECT );
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inline const QString & audioFile( void ) const
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{
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return( m_audioFile );
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}
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inline Uint32 startFrame( void ) const
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{
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return( m_startFrame );
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}
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inline Uint32 endFrame( void ) const
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{
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return( m_endFrame );
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}
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inline Uint32 frames( void ) const
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{
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return( m_frames );
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}
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inline float amplification( void ) const
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{
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return( m_amplification );
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}
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inline bool reversed( void ) const
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{
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return( m_reversed );
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}
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inline const sampleFrame * data( void ) const
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{
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return( m_data );
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}
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void FASTCALL deleteResamplingData( void * * _ptr );
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QString openAudioFile( void ) const;
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public slots:
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void setAudioFile( const QString & _audio_file );
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void setStartFrame( Uint32 _s );
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void setEndFrame( Uint32 _e );
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void setAmplification( float _a );
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void setReversed( bool _on );
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private:
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void FASTCALL update( bool _keep_settings = FALSE );
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#ifdef SDL_SDL_SOUND_H
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Uint32 FASTCALL decodeSampleSDL( const char * _f, Sint16 * & _buf,
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Uint8 & _channels );
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#endif
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#ifdef HAVE_SNDFILE_H
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Uint32 FASTCALL decodeSampleSF( const char * _f, Sint16 * & _buf,
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Uint8 & _channels );
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#endif
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#ifdef HAVE_VORBIS_VORBISFILE_H
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Uint32 FASTCALL decodeSampleOGG( const char * _f, Sint16 * & _buf,
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Uint8 & _channels );
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#endif
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QString m_audioFile;
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sampleFrame * m_origData;
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Uint32 m_origFrames;
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sampleFrame * m_data;
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Uint32 m_frames;
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Uint32 m_startFrame;
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Uint32 m_endFrame;
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float m_amplification;
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bool m_reversed;
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QMutex m_dataMutex;
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#ifdef HAVE_SAMPLERATE_H
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void initResampling( void );
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void quitResampling( void );
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SRC_STATE * createResamplingContext( void );
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void FASTCALL destroyResamplingContext( SRC_STATE * _context );
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SRC_DATA m_srcData;
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SRC_STATE * m_srcState;
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#endif
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signals:
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void sampleUpdated( void );
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} ;
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#endif
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