trunk/src/audioio.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck         *
 *                                                                         *
 *   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 2 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, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef __AUDIO_H__
#define __AUDIO_H__

#include "global.h"

// just symbol prototyping
class AudioThread;

/**
 * Abstract class for audio output in LinuxSampler. This class will be
 * derived by specialized classes which implement the connection to a
 * specific audio output system (e.g. Alsa, Jack).
 */
class AudioIO {
    public:
        AudioIO();
        virtual ~AudioIO();
        virtual void  Activate() = 0;
        virtual void  Close() = 0;
        virtual void* GetInterleavedOutputBuffer() = 0;
        virtual void* GetChannelOutputBufer(uint Channel) = 0;
        inline  void  AssignEngine(AudioThread* pAudioThread) { pEngine = pAudioThread;      };
        inline  bool  Initialized()                           { return bInitialized;         };
        inline  bool  Interleaved()                           { return bInterleaved;         };
        inline  uint  Channels()                              { return uiChannels;           };
        inline  uint  SampleRate()                            { return uiSamplerate;         };
        inline  uint  MaxSamplesPerCycle()                    { return uiMaxSamplesPerCycle; };
    protected:
        bool bInitialized;
        bool bInterleaved;
        uint uiChannels;
        uint uiSamplerate;
        uint uiMaxSamplesPerCycle;   ///< in sample points
        AudioThread* pEngine;
};

#endif // __AUDIO_H__
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck *
6	* *
7	* This program is free software; you can redistribute it and/or modify *
8	* it under the terms of the GNU General Public License as published by *
9	* the Free Software Foundation; either version 2 of the License, or *
10	* (at your option) any later version. *
11	* *
12	* This program is distributed in the hope that it will be useful, *
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15	* GNU General Public License for more details. *
16	* *
17	* You should have received a copy of the GNU General Public License *
18	* along with this program; if not, write to the Free Software *
19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20	* MA 02111-1307 USA *
21	***************************************************************************/
22
23	#ifndef __AUDIO_H__
24	#define __AUDIO_H__
25
26	#include "global.h"
27
28	// just symbol prototyping
29	class AudioThread;
30
31	/**
32	* Abstract class for audio output in LinuxSampler. This class will be
33	* derived by specialized classes which implement the connection to a
34	* specific audio output system (e.g. Alsa, Jack).
35	*/
36	class AudioIO {
37	public:
38	AudioIO();
39	virtual ~AudioIO();
40	virtual void Activate() = 0;
41	virtual void Close() = 0;
42	virtual void* GetInterleavedOutputBuffer() = 0;
43	virtual void* GetChannelOutputBufer(uint Channel) = 0;
44	inline void AssignEngine(AudioThread* pAudioThread) { pEngine = pAudioThread; };
45	inline bool Initialized() { return bInitialized; };
46	inline bool Interleaved() { return bInterleaved; };
47	inline uint Channels() { return uiChannels; };
48	inline uint SampleRate() { return uiSamplerate; };
49	inline uint MaxSamplesPerCycle() { return uiMaxSamplesPerCycle; };
50	protected:
51	bool bInitialized;
52	bool bInterleaved;
53	uint uiChannels;
54	uint uiSamplerate;
55	uint uiMaxSamplesPerCycle; ///< in sample points
56	AudioThread* pEngine;
57	};
58
59	#endif // __AUDIO_H__