trunk/src/Sampler.cpp

/***************************************************************************
 *                                                                         *
 *   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                                                   *
 ***************************************************************************/

#include "Sampler.h"

#include "audiodriver/AudioOutputDeviceAlsa.h"
#include "audiodriver/AudioOutputDeviceJack.h"
#include "mididriver/MidiInputDeviceAlsa.h"
#include "engines/gig/Engine.h"

namespace LinuxSampler {

    // ******************************************************************
    // * SamplerChannel

    SamplerChannel::SamplerChannel(Sampler* pS) {
        pSampler           = pS;
        pEngine            = NULL;
        pMidiInputDevice   = NULL;
        pAudioOutputDevice = NULL;
        iIndex             = -1;
    }

    SamplerChannel::~SamplerChannel() {
        if (pEngine) {
            if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);
            if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
            delete pEngine;
        }
    }

    void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
        dmsg(2,("SamplerChannel: Loading engine..."));

        // create new engine
        Engine* pNewEngine = NULL;
        switch (EngineType) {
            case Engine::type_gig:
                pNewEngine = new gig::Engine;
                break;
            default:
                throw LinuxSamplerException("Unknown engine type");
        }

        // disconnect old engine
        if (pEngine) {
            if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);
            if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
            delete pEngine;
        }

        // connect new engine
        pEngine = pNewEngine;
        if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());
        if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
        dmsg(2,("OK\n"));
    }

    void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
        // get / create desired audio device
        AudioOutputDevice* pDevice = pSampler->GetAudioOutputDevice(AudioType);
        if (!pDevice) pDevice = pSampler->CreateAudioOutputDevice(AudioType);

        // disconnect old device
        if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);

        // connect new device
        pAudioOutputDevice = pDevice;
        if (pEngine) pAudioOutputDevice->Connect(pEngine);
    }

    void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {
        // get / create desired midi device
        MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);
        if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);

        // disconnect old device
        if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);

        // connect new device
        pMidiInputDevice = pDevice;
        if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);
    }

    Engine* SamplerChannel::GetEngine() {
        return pEngine;
    }

    MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
        return pMidiInputDevice;
    }

    AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
        return pAudioOutputDevice;
    }

    uint SamplerChannel::Index() {
        if (iIndex >= 0) return iIndex;

        std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();
        for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {
            if (*iter == this) {
                iIndex = i;
                return i;
            }
        }

        throw LinuxSamplerException("SamplerChannel index not found");
    }


    // ******************************************************************
    // * Sampler

    Sampler::Sampler() {
    }

    Sampler::~Sampler() {
        // delete sampler channels
        {
            std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();
            for (; iter != vSamplerChannels.end(); iter++) delete *iter;
        }

        // delete midi input devices
        {
            MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();
            for (; iter != MidiInputDevices.end(); iter++) {
                MidiInputDevice* pDevice = iter->second;
                pDevice->StopListen();
                delete pDevice;
            }
        }

        // delete audio output devices
        {
            AudioOutputDeviceMap::iterator iter = AudioOutputDevices.begin();
            for (; iter != AudioOutputDevices.end(); iter++) {
                AudioOutputDevice* pDevice = iter->second;
                pDevice->Stop();
                delete pDevice;
            }
        }
    }

    uint Sampler::SamplerChannels() {
        return vSamplerChannels.size();
    }

    SamplerChannel* Sampler::AddSamplerChannel() {
        SamplerChannel* pChannel = new SamplerChannel(this);
        vSamplerChannels.push_back(pChannel);
        return pChannel;
    }

    SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
        if (uiSamplerChannel >= SamplerChannels()) return NULL;
        return vSamplerChannels[uiSamplerChannel];
    }

    void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
        std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();
        for (; iterChan != vSamplerChannels.end(); iterChan++) {
            if (*iterChan == pSamplerChannel) {
                vSamplerChannels.erase(iterChan);
                delete pSamplerChannel;
                return;
            }
        }
    }

    void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
        SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
        if (!pChannel) return;
        RemoveSamplerChannel(pChannel);
    }

    AudioOutputDevice* Sampler::CreateAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
        // check if device already created
        AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);
        if (pDevice) return pDevice;

        // create new device
        switch (AudioType) {
            case AudioOutputDevice::type_alsa:
                pDevice = new AudioOutputDeviceAlsa;
                break;
            case AudioOutputDevice::type_jack:
                pDevice = new AudioOutputDeviceJack;
                break;
            default:
                throw LinuxSamplerException("Unknown audio output device type");
        }

        // activate device
        pDevice->Play();

        // add new audio device to the audio device list
        AudioOutputDevices[AudioType] = pDevice;

        return pDevice;
    }

    AudioOutputDevice* Sampler::GetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
        AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);
        return (iter != AudioOutputDevices.end()) ? iter->second : NULL;
    }

    MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {
        // check if device already created
        MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);
        if (pDevice) return pDevice;

        // create new device
        switch (MidiType) {
            case MidiInputDevice::type_alsa:
                pDevice = new MidiInputDeviceAlsa;
                break;
            default:
                throw LinuxSamplerException("Unknown audio output device type");
        }

        // activate device
        pDevice->Listen();

        // add new MIDI device to the MIDI device list
        MidiInputDevices[MidiType] = pDevice;

        return pDevice;
    }

    MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {
        MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);
        return (iter != MidiInputDevices.end()) ? iter->second : NULL;
    }

} // namespace LinuxSampler
1	schoenebeck	53	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	schoenebeck	61	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	53	* *
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			#include "Sampler.h"
24
25			#include "audiodriver/AudioOutputDeviceAlsa.h"
26			#include "audiodriver/AudioOutputDeviceJack.h"
27			#include "mididriver/MidiInputDeviceAlsa.h"
28			#include "engines/gig/Engine.h"
29
30			namespace LinuxSampler {
31
32			// ******************************************************************
33			// * SamplerChannel
34
35			SamplerChannel::SamplerChannel(Sampler* pS) {
36			pSampler = pS;
37			pEngine = NULL;
38			pMidiInputDevice = NULL;
39			pAudioOutputDevice = NULL;
40			iIndex = -1;
41			}
42
43			SamplerChannel::~SamplerChannel() {
44			if (pEngine) {
45			if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);
46			if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
47			delete pEngine;
48			}
49			}
50
51	schoenebeck	64	void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
52			dmsg(2,("SamplerChannel: Loading engine..."));
53	schoenebeck	53
54			// create new engine
55			Engine* pNewEngine = NULL;
56			switch (EngineType) {
57	schoenebeck	64	case Engine::type_gig:
58	schoenebeck	53	pNewEngine = new gig::Engine;
59			break;
60			default:
61			throw LinuxSamplerException("Unknown engine type");
62			}
63
64			// disconnect old engine
65			if (pEngine) {
66			if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);
67			if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
68			delete pEngine;
69			}
70
71			// connect new engine
72			pEngine = pNewEngine;
73			if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());
74			if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
75	schoenebeck	64	dmsg(2,("OK\n"));
76	schoenebeck	53	}
77
78	schoenebeck	64	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
79	schoenebeck	53	// get / create desired audio device
80			AudioOutputDevice* pDevice = pSampler->GetAudioOutputDevice(AudioType);
81			if (!pDevice) pDevice = pSampler->CreateAudioOutputDevice(AudioType);
82
83			// disconnect old device
84			if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);
85
86			// connect new device
87			pAudioOutputDevice = pDevice;
88			if (pEngine) pAudioOutputDevice->Connect(pEngine);
89			}
90
91	schoenebeck	64	void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {
92	schoenebeck	53	// get / create desired midi device
93			MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);
94			if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);
95
96			// disconnect old device
97			if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);
98
99			// connect new device
100			pMidiInputDevice = pDevice;
101			if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);
102			}
103
104			Engine* SamplerChannel::GetEngine() {
105			return pEngine;
106			}
107
108			MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
109			return pMidiInputDevice;
110			}
111
112			AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
113			return pAudioOutputDevice;
114			}
115
116			uint SamplerChannel::Index() {
117			if (iIndex >= 0) return iIndex;
118
119			std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();
120			for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {
121			if (*iter == this) {
122			iIndex = i;
123			return i;
124			}
125			}
126
127			throw LinuxSamplerException("SamplerChannel index not found");
128			}
129
130
131			// ******************************************************************
132			// * Sampler
133
134			Sampler::Sampler() {
135			}
136
137			Sampler::~Sampler() {
138			// delete sampler channels
139			{
140			std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();
141			for (; iter != vSamplerChannels.end(); iter++) delete *iter;
142			}
143
144			// delete midi input devices
145			{
146			MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();
147			for (; iter != MidiInputDevices.end(); iter++) {
148			MidiInputDevice* pDevice = iter->second;
149			pDevice->StopListen();
150			delete pDevice;
151			}
152			}
153
154			// delete audio output devices
155			{
156			AudioOutputDeviceMap::iterator iter = AudioOutputDevices.begin();
157			for (; iter != AudioOutputDevices.end(); iter++) {
158			AudioOutputDevice* pDevice = iter->second;
159			pDevice->Stop();
160			delete pDevice;
161			}
162			}
163			}
164
165			uint Sampler::SamplerChannels() {
166	schoenebeck	64	return vSamplerChannels.size();
167	schoenebeck	53	}
168
169			SamplerChannel* Sampler::AddSamplerChannel() {
170			SamplerChannel* pChannel = new SamplerChannel(this);
171			vSamplerChannels.push_back(pChannel);
172			return pChannel;
173			}
174
175			SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
176			if (uiSamplerChannel >= SamplerChannels()) return NULL;
177			return vSamplerChannels[uiSamplerChannel];
178			}
179
180			void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
181			std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();
182			for (; iterChan != vSamplerChannels.end(); iterChan++) {
183			if (*iterChan == pSamplerChannel) {
184			vSamplerChannels.erase(iterChan);
185			delete pSamplerChannel;
186			return;
187			}
188			}
189			}
190
191			void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
192			SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
193			if (!pChannel) return;
194			RemoveSamplerChannel(pChannel);
195			}
196
197	schoenebeck	64	AudioOutputDevice* Sampler::CreateAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
198	schoenebeck	53	// check if device already created
199			AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);
200			if (pDevice) return pDevice;
201
202			// create new device
203			switch (AudioType) {
204	schoenebeck	64	case AudioOutputDevice::type_alsa:
205	schoenebeck	53	pDevice = new AudioOutputDeviceAlsa;
206			break;
207	schoenebeck	64	case AudioOutputDevice::type_jack:
208	schoenebeck	53	pDevice = new AudioOutputDeviceJack;
209			break;
210			default:
211			throw LinuxSamplerException("Unknown audio output device type");
212			}
213
214			// activate device
215			pDevice->Play();
216
217	schoenebeck	64	// add new audio device to the audio device list
218			AudioOutputDevices[AudioType] = pDevice;
219
220	schoenebeck	53	return pDevice;
221			}
222
223	schoenebeck	64	AudioOutputDevice* Sampler::GetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
224	schoenebeck	53	AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);
225			return (iter != AudioOutputDevices.end()) ? iter->second : NULL;
226			}
227
228	schoenebeck	64	MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {
229	schoenebeck	53	// check if device already created
230			MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);
231			if (pDevice) return pDevice;
232
233			// create new device
234			switch (MidiType) {
235	schoenebeck	64	case MidiInputDevice::type_alsa:
236	schoenebeck	53	pDevice = new MidiInputDeviceAlsa;
237			break;
238			default:
239			throw LinuxSamplerException("Unknown audio output device type");
240			}
241
242			// activate device
243			pDevice->Listen();
244
245	schoenebeck	64	// add new MIDI device to the MIDI device list
246			MidiInputDevices[MidiType] = pDevice;
247
248	schoenebeck	53	return pDevice;
249			}
250
251	schoenebeck	64	MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {
252	schoenebeck	53	MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);
253			return (iter != MidiInputDevices.end()) ? iter->second : NULL;
254			}
255
256			} // namespace LinuxSampler