drivers/midi/MidiInputDeviceAlsa.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 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 __LS_MIDIINPUTDEVICEALSA_H__
#define __LS_MIDIINPUTDEVICEALSA_H__

#include <alsa/asoundlib.h>

#include "../../common/global.h"
#include "../../common/Thread.h"
#include "../../common/RingBuffer.h"
#include "MidiInputDevice.h"

namespace LinuxSampler {

    /** ALSA MIDI input driver
     *
     * Implements MIDI input for the Advanced Linux Sound Architecture
     * (ALSA).
     */
    class MidiInputDeviceAlsa : public MidiInputDevice, public Thread {
        public:

            /**
             * MIDI Port implementation for the ALSA MIDI input driver.
             */
            class MidiInputPortAlsa : public MidiInputPort {
                public:
                    /** MIDI Port Parameter 'NAME'
                     *
                     * Used to assign an arbitrary name to the MIDI port.
                     */
                    class ParameterName : public MidiInputPort::ParameterName {
                        public:
                            ParameterName(MidiInputPort* pPort) throw (LinuxSamplerException);
                            virtual void OnSetValue(String s) throw (LinuxSamplerException);
                    };

                    /** MIDI Port Parameter 'ALSA_SEQ_BINDINGS'
                     *
                     * Used to connect to other Alsa sequencer clients.
                     */
                    class ParameterAlsaSeqBindings : public DeviceRuntimeParameterStrings {
                        public:
                            ParameterAlsaSeqBindings(MidiInputPortAlsa* pPort);
                            virtual String Description();
                            virtual bool Fix();
                            virtual std::vector<String> PossibilitiesAsString();
                            virtual void OnSetValue(std::vector<String> vS) throw (LinuxSamplerException);
                        protected:
                            MidiInputPortAlsa* pPort;
                    };

                    void ConnectToAlsaMidiSource(const char* MidiSource);
                protected:
                    MidiInputPortAlsa(MidiInputDeviceAlsa* pDevice) throw (MidiInputException);
                    ~MidiInputPortAlsa();
                    friend class MidiInputDeviceAlsa;
                private:
                    MidiInputDeviceAlsa* pDevice;

                    friend class ParameterName;
                    friend class ParameterAlsaSeqBindings;
            };

            MidiInputDeviceAlsa(std::map<String,DeviceCreationParameter*> Parameters);
            ~MidiInputDeviceAlsa();

            // derived abstract methods from class 'MidiInputDevice'
            void Listen();
            void StopListen();
            virtual String Driver();
            static String Name();
            static String Description();
            static String Version();

            MidiInputPortAlsa* CreateMidiPort();
        protected:
            int Main(); ///< Implementation of virtual method from class Thread
        private:
            snd_seq_t* hAlsaSeq;
            int        hAlsaSeqClient;       ///< Alsa Sequencer client ID

            friend class MidiInputPortAlsa;
            friend class MidiInputPortAlsa::ParameterName;
            friend class MidiInputPortAlsa::ParameterAlsaSeqBindings;
    };
}

#endif // __LS_MIDIINPUTDEVICEALSA_H__
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003, 2004 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 __LS_MIDIINPUTDEVICEALSA_H__
24	#define __LS_MIDIINPUTDEVICEALSA_H__
25
26	#include <alsa/asoundlib.h>
27
28	#include "../../common/global.h"
29	#include "../../common/Thread.h"
30	#include "../../common/RingBuffer.h"
31	#include "MidiInputDevice.h"
32
33	namespace LinuxSampler {
34
35	/** ALSA MIDI input driver
36	*
37	* Implements MIDI input for the Advanced Linux Sound Architecture
38	* (ALSA).
39	*/
40	class MidiInputDeviceAlsa : public MidiInputDevice, public Thread {
41	public:
42
43	/**
44	* MIDI Port implementation for the ALSA MIDI input driver.
45	*/
46	class MidiInputPortAlsa : public MidiInputPort {
47	public:
48	/** MIDI Port Parameter 'NAME'
49	*
50	* Used to assign an arbitrary name to the MIDI port.
51	*/
52	class ParameterName : public MidiInputPort::ParameterName {
53	public:
54	ParameterName(MidiInputPort* pPort) throw (LinuxSamplerException);
55	virtual void OnSetValue(String s) throw (LinuxSamplerException);
56	};
57
58	/** MIDI Port Parameter 'ALSA_SEQ_BINDINGS'
59	*
60	* Used to connect to other Alsa sequencer clients.
61	*/
62	class ParameterAlsaSeqBindings : public DeviceRuntimeParameterStrings {
63	public:
64	ParameterAlsaSeqBindings(MidiInputPortAlsa* pPort);
65	virtual String Description();
66	virtual bool Fix();
67	virtual std::vector<String> PossibilitiesAsString();
68	virtual void OnSetValue(std::vector<String> vS) throw (LinuxSamplerException);
69	protected:
70	MidiInputPortAlsa* pPort;
71	};
72
73	void ConnectToAlsaMidiSource(const char* MidiSource);
74	protected:
75	MidiInputPortAlsa(MidiInputDeviceAlsa* pDevice) throw (MidiInputException);
76	~MidiInputPortAlsa();
77	friend class MidiInputDeviceAlsa;
78	private:
79	MidiInputDeviceAlsa* pDevice;
80
81	friend class ParameterName;
82	friend class ParameterAlsaSeqBindings;
83	};
84
85	MidiInputDeviceAlsa(std::map<String,DeviceCreationParameter*> Parameters);
86	~MidiInputDeviceAlsa();
87
88	// derived abstract methods from class 'MidiInputDevice'
89	void Listen();
90	void StopListen();
91	virtual String Driver();
92	static String Name();
93	static String Description();
94	static String Version();
95
96	MidiInputPortAlsa* CreateMidiPort();
97	protected:
98	int Main(); ///< Implementation of virtual method from class Thread
99	private:
100	snd_seq_t* hAlsaSeq;
101	int hAlsaSeqClient; ///< Alsa Sequencer client ID
102
103	friend class MidiInputPortAlsa;
104	friend class MidiInputPortAlsa::ParameterName;
105	friend class MidiInputPortAlsa::ParameterAlsaSeqBindings;
106	};
107	}
108
109	#endif // __LS_MIDIINPUTDEVICEALSA_H__