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;
#if HAVE_JACK
            case AudioOutputDevice::type_jack:
                pDevice = new AudioOutputDeviceJack;
                break;
#endif
            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	/***************************************************************************
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	#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	void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
52	dmsg(2,("SamplerChannel: Loading engine..."));
53
54	// create new engine
55	Engine* pNewEngine = NULL;
56	switch (EngineType) {
57	case Engine::type_gig:
58	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	dmsg(2,("OK\n"));
76	}
77
78	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
79	// 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	void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {
92	// 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	return vSamplerChannels.size();
167	}
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	AudioOutputDevice* Sampler::CreateAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
198	// check if device already created
199	AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);
200	if (pDevice) return pDevice;
201
202	// create new device
203	switch (AudioType) {
204	case AudioOutputDevice::type_alsa:
205	pDevice = new AudioOutputDeviceAlsa;
206	break;
207	#if HAVE_JACK
208	case AudioOutputDevice::type_jack:
209	pDevice = new AudioOutputDeviceJack;
210	break;
211	#endif
212	default:
213	throw LinuxSamplerException("Unknown audio output device type");
214	}
215
216	// activate device
217	pDevice->Play();
218
219	// add new audio device to the audio device list
220	AudioOutputDevices[AudioType] = pDevice;
221
222	return pDevice;
223	}
224
225	AudioOutputDevice* Sampler::GetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {
226	AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);
227	return (iter != AudioOutputDevices.end()) ? iter->second : NULL;
228	}
229
230	MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {
231	// check if device already created
232	MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);
233	if (pDevice) return pDevice;
234
235	// create new device
236	switch (MidiType) {
237	case MidiInputDevice::type_alsa:
238	pDevice = new MidiInputDeviceAlsa;
239	break;
240	default:
241	throw LinuxSamplerException("Unknown audio output device type");
242	}
243
244	// activate device
245	pDevice->Listen();
246
247	// add new MIDI device to the MIDI device list
248	MidiInputDevices[MidiType] = pDevice;
249
250	return pDevice;
251	}
252
253	MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {
254	MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);
255	return (iter != MidiInputDevices.end()) ? iter->second : NULL;
256	}
257
258	} // namespace LinuxSampler