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;
        pMidiInputDevice   = NULL;
        pAudioOutputDevice = NULL;
        midiPort           = 0;
        midiChannel        = MidiInputDevice::MidiInputPort::midi_chan_all;
        iIndex             = -1;
    }

    SamplerChannel::~SamplerChannel() {
        if (pEngine) {
            MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
            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");
        }

        // dereference midi input port.
        MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // 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, this->midiChannel);
        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::SetMidiInputDevice(MidiInputDevice* pDevice) {
       SetMidiInput(pDevice, this->midiPort, this->midiChannel);
    }
    
    void SamplerChannel::SetMidiInputPort(int MidiPort) {
       SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
    }
    
    void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
       SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
    }
    
    void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
        // dereference old midi input port.
        MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // disconnect old device port
        if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
        // new device, port and channel
        pMidiInputDevice = pDevice;
        this->midiPort = MidiPort;
        this->midiChannel = MidiChannel;
        // connect new device port
        pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);
        // Ooops.
        if (pMidiInputPort == NULL)
            throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");
    }

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

    MidiInputDevice::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
        return this->midiChannel;
    }

    int SamplerChannel::GetMidiInputPort() {
        MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
    }

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

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

    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");
    }

    MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {
        MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;
        if (pMidiInputDevice)
            pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);
        return pMidiInputPort;
    }

    // ******************************************************************
    // * 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	pMidiInputDevice = NULL;
40	pAudioOutputDevice = NULL;
41	midiPort = 0;
42	midiChannel = MidiInputDevice::MidiInputPort::midi_chan_all;
43	iIndex = -1;
44	}
45
46	SamplerChannel::~SamplerChannel() {
47	if (pEngine) {
48	MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
49	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
50	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
51	delete pEngine;
52	}
53	}
54
55	void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
56	dmsg(2,("SamplerChannel: Loading engine..."));
57
58	// create new engine
59	Engine* pNewEngine = NULL;
60	switch (EngineType) {
61	case Engine::type_gig:
62	pNewEngine = new gig::Engine;
63	break;
64	default:
65	throw LinuxSamplerException("Unknown engine type");
66	}
67
68	// dereference midi input port.
69	MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
70	// disconnect old engine
71	if (pEngine) {
72	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
73	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
74	delete pEngine;
75	}
76
77	// connect new engine
78	pEngine = pNewEngine;
79	if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);
80	if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
81	dmsg(2,("OK\n"));
82	}
83
84	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
85	// disconnect old device
86	if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);
87	// connect new device
88	pAudioOutputDevice = pDevice;
89	if (pEngine) pAudioOutputDevice->Connect(pEngine);
90	}
91
92	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
93	SetMidiInput(pDevice, this->midiPort, this->midiChannel);
94	}
95
96	void SamplerChannel::SetMidiInputPort(int MidiPort) {
97	SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
98	}
99
100	void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
101	SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
102	}
103
104	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
105	// dereference old midi input port.
106	MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
107	// disconnect old device port
108	if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
109	// new device, port and channel
110	pMidiInputDevice = pDevice;
111	this->midiPort = MidiPort;
112	this->midiChannel = MidiChannel;
113	// connect new device port
114	pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
115	if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);
116	// Ooops.
117	if (pMidiInputPort == NULL)
118	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");
119	}
120
121	Engine* SamplerChannel::GetEngine() {
122	return pEngine;
123	}
124
125	MidiInputDevice::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
126	return this->midiChannel;
127	}
128
129	int SamplerChannel::GetMidiInputPort() {
130	MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
131	return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
132	}
133
134	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
135	return pAudioOutputDevice;
136	}
137
138	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
139	return pMidiInputDevice;
140	}
141
142	uint SamplerChannel::Index() {
143	if (iIndex >= 0) return iIndex;
144
145	std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();
146	for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {
147	if (*iter == this) {
148	iIndex = i;
149	return i;
150	}
151	}
152
153	throw LinuxSamplerException("SamplerChannel index not found");
154	}
155
156	MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {
157	MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;
158	if (pMidiInputDevice)
159	pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);
160	return pMidiInputPort;
161	}
162
163	// ******************************************************************
164	// * Sampler
165
166	Sampler::Sampler() {
167	}
168
169	Sampler::~Sampler() {
170	// delete sampler channels
171	{
172	std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();
173	for (; iter != vSamplerChannels.end(); iter++) delete *iter;
174	}
175
176	// delete midi input devices
177	{
178	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
179	for (; iter != mMidiInputDevices.end(); iter++) {
180	MidiInputDevice* pDevice = iter->second;
181	pDevice->StopListen();
182	delete pDevice;
183	}
184	}
185
186	// delete audio output devices
187	{
188	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
189	for (; iter != mAudioOutputDevices.end(); iter++) {
190	AudioOutputDevice* pDevice = iter->second;
191	pDevice->Stop();
192	delete pDevice;
193	}
194	}
195	}
196
197	uint Sampler::SamplerChannels() {
198	return vSamplerChannels.size();
199	}
200
201	SamplerChannel* Sampler::AddSamplerChannel() {
202	SamplerChannel* pChannel = new SamplerChannel(this);
203	vSamplerChannels.push_back(pChannel);
204	return pChannel;
205	}
206
207	SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
208	if (uiSamplerChannel >= SamplerChannels()) return NULL;
209	return vSamplerChannels[uiSamplerChannel];
210	}
211
212	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
213	std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();
214	for (; iterChan != vSamplerChannels.end(); iterChan++) {
215	if (*iterChan == pSamplerChannel) {
216	vSamplerChannels.erase(iterChan);
217	delete pSamplerChannel;
218	return;
219	}
220	}
221	}
222
223	void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
224	SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
225	if (!pChannel) return;
226	RemoveSamplerChannel(pChannel);
227	}
228
229	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
230	return AudioOutputDeviceFactory::AvailableDrivers();
231	}
232
233	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
234	// create new device
235	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
236
237	// activate device
238	pDevice->Play();
239
240	// add new audio device to the audio device list
241	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
242	if (!mAudioOutputDevices[i]) {
243	mAudioOutputDevices[i] = pDevice;
244	break;
245	}
246	}
247
248	return pDevice;
249	}
250
251	uint Sampler::AudioOutputDevices() {
252	return mAudioOutputDevices.size();
253	}
254
255	uint Sampler::MidiInputDevices() {
256	return mMidiInputDevices.size();
257	}
258
259	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
260	return mAudioOutputDevices;
261	}
262
263	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
264	return mMidiInputDevices;
265	}
266
267	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
268	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
269	for (; iter != mAudioOutputDevices.end(); iter++) {
270	if (iter->second == pDevice) {
271	// check if there are still sampler engines connected to this device
272	for (uint i = 0; i < SamplerChannels(); i++)
273	if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
274
275	// disable device
276	pDevice->Stop();
277
278	// remove device from the device list
279	mAudioOutputDevices.erase(iter);
280
281	// destroy and free device from memory
282	delete pDevice;
283	}
284	}
285	}
286
287	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
288	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
289	for (; iter != mMidiInputDevices.end(); iter++) {
290	if (iter->second == pDevice) {
291	// check if there are still sampler engines connected to this device
292	for (uint i = 0; i < SamplerChannels(); i++)
293	if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
294
295	// disable device
296	pDevice->StopListen();
297
298	// remove device from the device list
299	mMidiInputDevices.erase(iter);
300
301	// destroy and free device from memory
302	delete pDevice;
303	}
304	}
305	}
306
307	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
308	// create new device
309	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);
310
311	// activate device
312	pDevice->Listen();
313
314	// add new device to the midi device list
315	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
316	if (!mMidiInputDevices[i]) {
317	mMidiInputDevices[i] = pDevice;
318	break;
319	}
320	}
321
322	return pDevice;
323	}
324
325	} // namespace LinuxSampler