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 <sstream>

#include "Sampler.h"

#include "audiodriver/AudioOutputDeviceFactory.h"
#include "mididriver/MidiInputDeviceFactory.h"
#include "engines/gig/Engine.h"

namespace LinuxSampler {

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

    SamplerChannel::SamplerChannel(Sampler* pS) {
        pSampler           = pS;
        pEngine            = NULL;
        pMidiInputPort     = NULL;
        pAudioOutputDevice = NULL;
        iIndex             = -1;
        midiChannel        = MidiInputDevice::MidiInputPort::midi_chan_all;
    }

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

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

    void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
        // disconnect old device
        if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);

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

    void SamplerChannel::SetMidiInputPort(MidiInputDevice* pDevice, int midiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
        // disconnect old port
        if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);

        // connect new port
        pMidiInputPort = pDevice->GetPort(midiPort);
        if (!pMidiInputPort)
                throw LinuxSamplerException("MIDI port doesn't exist");
        if (pEngine) {
                pMidiInputPort->Connect(pEngine, MidiChannel);
                this->midiChannel = MidiChannel;
        }
    }

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

    MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputPort() {
        return pMidiInputPort;
    }

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

    MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
        MidiInputDevice::MidiInputPort* port = GetMidiInputPort();
        if (!port)
                return NULL;
        return port->GetDevice();
    }

    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 = mMidiInputDevices.begin();
            for (; iter != mMidiInputDevices.end(); iter++) {
                MidiInputDevice* pDevice = iter->second;
                pDevice->StopListen();
                delete pDevice;
            }
        }

        // delete audio output devices
        {
            AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
            for (; iter != mAudioOutputDevices.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);
    }

    std::vector<String> Sampler::AvailableAudioOutputDrivers() {
        return AudioOutputDeviceFactory::AvailableDrivers();
    }

    AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
        // create new device
        AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);

        // activate device
        pDevice->Play();

        // add new audio device to the audio device list
        for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
            if (!mAudioOutputDevices[i]) {
                mAudioOutputDevices[i] = pDevice;
                break;
            }
        }

        return pDevice;
    }

    uint Sampler::AudioOutputDevices() {
        return mAudioOutputDevices.size();
    }

    uint Sampler::MidiInputDevices() {
        return mMidiInputDevices.size();
    }

    std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
        return mAudioOutputDevices;
    }

    std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
        return mMidiInputDevices;
    }

    void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
        for (; iter != mAudioOutputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // check if there are still sampler engines connected to this device
                for (uint i = 0; i < SamplerChannels(); i++)
                    if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");

                // disable device
                pDevice->Stop();

                // remove device from the device list
                mAudioOutputDevices.erase(iter);

                // destroy and free device from memory
                delete pDevice;
            }
        }
    }

    void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
        for (; iter != mMidiInputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // check if there are still sampler engines connected to this device
                for (uint i = 0; i < SamplerChannels(); i++)
                    if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");

                // disable device
                pDevice->StopListen();

                // remove device from the device list
                mMidiInputDevices.erase(iter);

                // destroy and free device from memory
                delete pDevice;
            }
        }
    }

    MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
        // create new device
        MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);

        // activate device
        pDevice->Listen();

        // add new device to the midi device list
        for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
                if (!mMidiInputDevices[i]) {
                        mMidiInputDevices[i] = pDevice;
                        break;
                }
        }

        return pDevice;
    }

} // 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 <sstream>
24
25	#include "Sampler.h"
26
27	#include "audiodriver/AudioOutputDeviceFactory.h"
28	#include "mididriver/MidiInputDeviceFactory.h"
29	#include "engines/gig/Engine.h"
30
31	namespace LinuxSampler {
32
33	// ******************************************************************
34	// * SamplerChannel
35
36	SamplerChannel::SamplerChannel(Sampler* pS) {
37	pSampler = pS;
38	pEngine = NULL;
39	pMidiInputPort = NULL;
40	pAudioOutputDevice = NULL;
41	iIndex = -1;
42	midiChannel = MidiInputDevice::MidiInputPort::midi_chan_all;
43	}
44
45	SamplerChannel::~SamplerChannel() {
46	if (pEngine) {
47	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
48	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
49	delete pEngine;
50	}
51	}
52
53	void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
54	dmsg(2,("SamplerChannel: Loading engine..."));
55
56	// create new engine
57	Engine* pNewEngine = NULL;
58	switch (EngineType) {
59	case Engine::type_gig:
60	pNewEngine = new gig::Engine;
61	break;
62	default:
63	throw LinuxSamplerException("Unknown engine type");
64	}
65
66	// disconnect old engine
67	if (pEngine) {
68	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
69	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
70	delete pEngine;
71	}
72
73	// connect new engine
74	pEngine = pNewEngine;
75	if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, (MidiInputDevice::MidiInputPort::midi_chan_t) Index());
76	if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
77	dmsg(2,("OK\n"));
78	}
79
80	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
81	// disconnect old device
82	if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);
83
84	// connect new device
85	pAudioOutputDevice = pDevice;
86	if (pEngine) pAudioOutputDevice->Connect(pEngine);
87	}
88
89	void SamplerChannel::SetMidiInputPort(MidiInputDevice* pDevice, int midiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
90	// disconnect old port
91	if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
92
93	// connect new port
94	pMidiInputPort = pDevice->GetPort(midiPort);
95	if (!pMidiInputPort)
96	throw LinuxSamplerException("MIDI port doesn't exist");
97	if (pEngine) {
98	pMidiInputPort->Connect(pEngine, MidiChannel);
99	this->midiChannel = MidiChannel;
100	}
101	}
102
103	Engine* SamplerChannel::GetEngine() {
104	return pEngine;
105	}
106
107	MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputPort() {
108	return pMidiInputPort;
109	}
110
111	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
112	return pAudioOutputDevice;
113	}
114
115	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
116	MidiInputDevice::MidiInputPort* port = GetMidiInputPort();
117	if (!port)
118	return NULL;
119	return port->GetDevice();
120	}
121
122	uint SamplerChannel::Index() {
123	if (iIndex >= 0) return iIndex;
124
125	std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();
126	for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {
127	if (*iter == this) {
128	iIndex = i;
129	return i;
130	}
131	}
132
133	throw LinuxSamplerException("SamplerChannel index not found");
134	}
135
136
137	// ******************************************************************
138	// * Sampler
139
140	Sampler::Sampler() {
141	}
142
143	Sampler::~Sampler() {
144	// delete sampler channels
145	{
146	std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();
147	for (; iter != vSamplerChannels.end(); iter++) delete *iter;
148	}
149
150	// delete midi input devices
151	{
152	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
153	for (; iter != mMidiInputDevices.end(); iter++) {
154	MidiInputDevice* pDevice = iter->second;
155	pDevice->StopListen();
156	delete pDevice;
157	}
158	}
159
160	// delete audio output devices
161	{
162	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
163	for (; iter != mAudioOutputDevices.end(); iter++) {
164	AudioOutputDevice* pDevice = iter->second;
165	pDevice->Stop();
166	delete pDevice;
167	}
168	}
169	}
170
171	uint Sampler::SamplerChannels() {
172	return vSamplerChannels.size();
173	}
174
175	SamplerChannel* Sampler::AddSamplerChannel() {
176	SamplerChannel* pChannel = new SamplerChannel(this);
177	vSamplerChannels.push_back(pChannel);
178	return pChannel;
179	}
180
181	SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
182	if (uiSamplerChannel >= SamplerChannels()) return NULL;
183	return vSamplerChannels[uiSamplerChannel];
184	}
185
186	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
187	std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();
188	for (; iterChan != vSamplerChannels.end(); iterChan++) {
189	if (*iterChan == pSamplerChannel) {
190	vSamplerChannels.erase(iterChan);
191	delete pSamplerChannel;
192	return;
193	}
194	}
195	}
196
197	void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
198	SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
199	if (!pChannel) return;
200	RemoveSamplerChannel(pChannel);
201	}
202
203	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
204	return AudioOutputDeviceFactory::AvailableDrivers();
205	}
206
207	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
208	// create new device
209	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
210
211	// activate device
212	pDevice->Play();
213
214	// add new audio device to the audio device list
215	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
216	if (!mAudioOutputDevices[i]) {
217	mAudioOutputDevices[i] = pDevice;
218	break;
219	}
220	}
221
222	return pDevice;
223	}
224
225	uint Sampler::AudioOutputDevices() {
226	return mAudioOutputDevices.size();
227	}
228
229	uint Sampler::MidiInputDevices() {
230	return mMidiInputDevices.size();
231	}
232
233	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
234	return mAudioOutputDevices;
235	}
236
237	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
238	return mMidiInputDevices;
239	}
240
241	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
242	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
243	for (; iter != mAudioOutputDevices.end(); iter++) {
244	if (iter->second == pDevice) {
245	// check if there are still sampler engines connected to this device
246	for (uint i = 0; i < SamplerChannels(); i++)
247	if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
248
249	// disable device
250	pDevice->Stop();
251
252	// remove device from the device list
253	mAudioOutputDevices.erase(iter);
254
255	// destroy and free device from memory
256	delete pDevice;
257	}
258	}
259	}
260
261	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
262	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
263	for (; iter != mMidiInputDevices.end(); iter++) {
264	if (iter->second == pDevice) {
265	// check if there are still sampler engines connected to this device
266	for (uint i = 0; i < SamplerChannels(); i++)
267	if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
268
269	// disable device
270	pDevice->StopListen();
271
272	// remove device from the device list
273	mMidiInputDevices.erase(iter);
274
275	// destroy and free device from memory
276	delete pDevice;
277	}
278	}
279	}
280
281	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
282	// create new device
283	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);
284
285	// activate device
286	pDevice->Listen();
287
288	// add new device to the midi device list
289	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
290	if (!mMidiInputDevices[i]) {
291	mMidiInputDevices[i] = pDevice;
292	break;
293	}
294	}
295
296	return pDevice;
297	}
298
299	} // namespace LinuxSampler