drivers/audio/AudioOutputDeviceFactory.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2009 Christian Schoenebeck                       *
 *                                                                         *
 *   This library 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 library 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 library; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "AudioOutputDeviceFactory.h"

#include "../../common/global_private.h"

#if HAVE_ALSA
# include "AudioOutputDeviceAlsa.h"
#endif // HAVE_ALSA

#if HAVE_JACK
# include "AudioOutputDeviceJack.h"
#endif // HAVE_JACK

#if HAVE_ARTS
# include "AudioOutputDeviceArts.h"
#endif // HAVE_ARTS

#if HAVE_ASIO
# include "AudioOutputDeviceAsio.h"
#endif // HAVE_ASIO

#if HAVE_COREAUDIO
# include "AudioOutputDeviceCoreAudio.h"
#endif // HAVE_COREAUDIO

namespace LinuxSampler {

    std::map<String, AudioOutputDeviceFactory::InnerFactory*> AudioOutputDeviceFactory::InnerFactories;
    std::map<String, DeviceParameterFactory*> AudioOutputDeviceFactory::ParameterFactories;

#if HAVE_ALSA
    REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceAlsa);
    /* Common parameters for now they'll have to be registered here. */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterActive);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterSampleRate);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterChannels);
    /* Driver specific parameters */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterCard);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterFragments);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterFragmentSize);
#endif // HAVE_ALSA

#if HAVE_JACK
    REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceJack);
    /* Common parameters for now they'll have to be registered here. */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterActive);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterSampleRate);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterChannels);
    /* Driver specific parameters */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterName);
#endif // HAVE_JACK

#if HAVE_ARTS
    REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceArts);
    /* Common parameters for now they'll have to be registered here. */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterActive);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterSampleRate);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterChannels);
    /* Driver specific parameters */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterName);
#endif // HAVE_ARTS

#if HAVE_ASIO
    REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceAsio);
    /* Common parameters for now they'll have to be registered here. */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterActive);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterSampleRate);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterChannels);
    /* Driver specific parameters */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterCard);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterFragmentSize);
#endif // HAVE_ASIO

#if HAVE_COREAUDIO
    REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceCoreAudio);
    /* Common parameters for now they'll have to be registered here. */
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterActive);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterSampleRate);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterChannels);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterDevice);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterBuffers);
    REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterBufferSize);
#endif // HAVE_COREAUDIO

    AudioOutputDeviceFactory::AudioOutputDeviceMap AudioOutputDeviceFactory::mAudioOutputDevices;

    /**
     * Creates a new audio output device for the given driver name and
     * parameters. Note, this method will also check whether it is actually
     * allowed to create an instance of the given driver on its own and throw
     * an Exception in case it is not allowed (this is the case for host plugin
     * drivers like VST, AU, DSSI, LV2).
     *
     * @param DriverName - name of the driver of which a new device shall be created
     * @param Parameters - device creation parameters which shall be passed to the driver's constructor
     *
     * @returns pointer to the new device instance
     * @throws Exception - in case the device could not be created
     *
     * @see CreatePrivate()
     */
    AudioOutputDevice* AudioOutputDeviceFactory::Create(String DriverName, std::map<String,String> Parameters) throw (Exception) {
        if (!InnerFactories.count(DriverName))
            throw Exception("There is no audio output driver '" + DriverName + "'.");
        if (!InnerFactories[DriverName]->isAutonomousDriver())
            throw Exception("You cannot directly create a new audio output device of the '" + DriverName + "' driver!");

        return CreatePrivate(DriverName, Parameters);
    }

    /**
     * Same as Create(), but this method won't check whether it is allowed to
     * create an instance of the given driver on its own. This method is
     * usually called by host plugins (e.g. VST, AU, DSSI, LV2) to actually
     * create their respective audio output devices for the sampler. Usually
     * one shouldn't call this method directly, but call Create() instead.
     */
    AudioOutputDevice* AudioOutputDeviceFactory::CreatePrivate(String DriverName, std::map<String,String> Parameters) throw (Exception) {
        if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
        // let's see if we need to create parameters
        std::map<String,DeviceCreationParameter*> thisDeviceParams;
        DeviceParameterFactory* pParamFactory = ParameterFactories[DriverName];
        if (pParamFactory) {
            thisDeviceParams = pParamFactory->CreateAllParams(Parameters);
        } else {
            // no parameters are registered by the driver. Throw if any parameters were specified.
            if (Parameters.size() != 0) throw Exception("Driver '" + DriverName + "' does not have any parameters.");
        }

        // get a free device id
        int iDeviceId = -1;
        for (int i = 0; i >= 0; i++) { // seek for a free place starting from the beginning
            if (!mAudioOutputDevices[i]) {
                iDeviceId = i;
                break;
            }
        }
        if (iDeviceId < 0)
            throw Exception("Could not retrieve free device ID!");

        // now create the device using those parameters
        AudioOutputDevice* pDevice = InnerFactories[DriverName]->Create(thisDeviceParams);
        pDevice->setDeviceId(iDeviceId);
        // now attach all parameters to the newely created device.
        for (std::map<String,DeviceCreationParameter*>::iterator iter = thisDeviceParams.begin(); iter != thisDeviceParams.end(); iter++) {
            iter->second->Attach(pDevice);
        }

        // add new audio device to the audio device list
        mAudioOutputDevices[iDeviceId] = pDevice;

        return pDevice;
    }

    std::vector<String> AudioOutputDeviceFactory::AvailableDrivers() {
        std::vector<String> result;
        std::map<String, InnerFactory*>::iterator iter = InnerFactories.begin();
        while (iter != InnerFactories.end()) {
            result.push_back(iter->first);
            iter++;
        }
        return result;
    }

    String AudioOutputDeviceFactory::AvailableDriversAsString() {
        std::vector<String> drivers = AvailableDrivers();
        String result;
        std::vector<String>::iterator iter = drivers.begin();
        for (; iter != drivers.end(); iter++) {
            if (result != "") result += ",";
            result += *iter;
        }
        return result;
    }

    std::map<String,DeviceCreationParameter*> AudioOutputDeviceFactory::GetAvailableDriverParameters(String DriverName) throw (Exception) {
        if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
        std::map<String,DeviceCreationParameter*> thisDeviceParams;
        DeviceParameterFactory* pParamFactory = ParameterFactories[DriverName];
        if (pParamFactory) {
            thisDeviceParams = pParamFactory->CreateAllParams();
        }
        return thisDeviceParams;
    }

    DeviceCreationParameter* AudioOutputDeviceFactory::GetDriverParameter(String DriverName, String ParameterName) throw (Exception) {
        if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
        DeviceParameterFactory* pParamFactory = ParameterFactories[DriverName];
        if (pParamFactory) {
            try { return pParamFactory->Create(ParameterName); }
            catch(Exception e) { }
        }
        throw Exception("Audio output driver '" + DriverName + "' does not have a parameter '" + ParameterName + "'.");
    }

    String AudioOutputDeviceFactory::GetDriverDescription(String DriverName) throw (Exception) {
        if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
        return InnerFactories[DriverName]->Description();
    }

    String AudioOutputDeviceFactory::GetDriverVersion(String DriverName) throw (Exception) {
        if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
        return InnerFactories[DriverName]->Version();
    }

    void AudioOutputDeviceFactory::Unregister(String DriverName) {
        std::map<String, InnerFactory*>::iterator iter = InnerFactories.find(DriverName);
        if (iter != InnerFactories.end()) {
            delete iter->second;
            InnerFactories.erase(iter);
        }

        std::map<String, DeviceParameterFactory*>::iterator iterpf = ParameterFactories.find(DriverName);
        if (iterpf != ParameterFactories.end()) {
            delete iterpf->second;
            ParameterFactories.erase(iterpf);
        }
    }

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

    /**
     * Destroys the given device. Usually this method shouldn't be called
     * directly, Sampler::DestroyAudioOutputDevice should be called instead,
     * since it also takes care whether some sampler channel is still using
     * the device, etc.
     */
    void AudioOutputDeviceFactory::Destroy(AudioOutputDevice* pDevice) throw (Exception) {
        if (pDevice && !pDevice->isAutonomousDevice())
            throw Exception("You cannot directly destroy this '" + pDevice->Driver() + "' device!");

        DestroyPrivate(pDevice);
    }

    void AudioOutputDeviceFactory::DestroyPrivate(AudioOutputDevice* pDevice) throw (Exception) {
        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
        for (; iter != mAudioOutputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // disable device
                pDevice->Stop();
                // remove device from the device list
                mAudioOutputDevices.erase(iter);
                // destroy and free device from memory
                delete pDevice;

                break;
            }
        }
    }

} // namespace LinuxSampler
1	schoenebeck	200	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	persson	1889	* Copyright (C) 2005 - 2009 Christian Schoenebeck *
7	schoenebeck	200	* *
8	schoenebeck	838	* This library is free software; you can redistribute it and/or modify *
9	schoenebeck	200	* it under the terms of the GNU General Public License as published by *
10			* the Free Software Foundation; either version 2 of the License, or *
11			* (at your option) any later version. *
12			* *
13	schoenebeck	838	* This library is distributed in the hope that it will be useful, *
14	schoenebeck	200	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16			* GNU General Public License for more details. *
17			* *
18			* You should have received a copy of the GNU General Public License *
19	schoenebeck	838	* along with this library; if not, write to the Free Software *
20	schoenebeck	200	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21			* MA 02111-1307 USA *
22			***************************************************************************/
23
24			#include "AudioOutputDeviceFactory.h"
25
26	schoenebeck	1424	#include "../../common/global_private.h"
27
28	schoenebeck	289	#if HAVE_ALSA
29			# include "AudioOutputDeviceAlsa.h"
30			#endif // HAVE_ALSA
31	schoenebeck	288
32	schoenebeck	289	#if HAVE_JACK
33			# include "AudioOutputDeviceJack.h"
34			#endif // HAVE_JACK
35
36	schoenebeck	838	#if HAVE_ARTS
37			# include "AudioOutputDeviceArts.h"
38			#endif // HAVE_ARTS
39
40	senoner	1481	#if HAVE_ASIO
41			# include "AudioOutputDeviceAsio.h"
42			#endif // HAVE_ASIO
43	iliev	1829
44			#if HAVE_COREAUDIO
45			# include "AudioOutputDeviceCoreAudio.h"
46			#endif // HAVE_COREAUDIO
47
48	schoenebeck	200	namespace LinuxSampler {
49
50			std::map<String, AudioOutputDeviceFactory::InnerFactory*> AudioOutputDeviceFactory::InnerFactories;
51			std::map<String, DeviceParameterFactory*> AudioOutputDeviceFactory::ParameterFactories;
52
53	schoenebeck	289	#if HAVE_ALSA
54			REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceAlsa);
55			/* Common parameters for now they'll have to be registered here. */
56			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterActive);
57			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterSampleRate);
58			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterChannels);
59			/* Driver specific parameters */
60			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterCard);
61			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterFragments);
62			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAlsa, ParameterFragmentSize);
63			#endif // HAVE_ALSA
64	schoenebeck	288
65	schoenebeck	289	#if HAVE_JACK
66			REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceJack);
67			/* Common parameters for now they'll have to be registered here. */
68			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterActive);
69	schoenebeck	1604	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterSampleRate);
70	schoenebeck	289	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterChannels);
71	schoenebeck	374	/* Driver specific parameters */
72			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterName);
73	schoenebeck	289	#endif // HAVE_JACK
74
75	schoenebeck	838	#if HAVE_ARTS
76			REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceArts);
77			/* Common parameters for now they'll have to be registered here. */
78			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterActive);
79			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterSampleRate);
80			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterChannels);
81			/* Driver specific parameters */
82			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceArts, ParameterName);
83			#endif // HAVE_ARTS
84
85	senoner	1481	#if HAVE_ASIO
86			REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceAsio);
87			/* Common parameters for now they'll have to be registered here. */
88			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterActive);
89			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterSampleRate);
90			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterChannels);
91			/* Driver specific parameters */
92			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterCard);
93			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceAsio, ParameterFragmentSize);
94			#endif // HAVE_ASIO
95
96	iliev	1829	#if HAVE_COREAUDIO
97			REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceCoreAudio);
98			/* Common parameters for now they'll have to be registered here. */
99			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterActive);
100			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterSampleRate);
101			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterChannels);
102	iliev	1832	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterDevice);
103	iliev	1829	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterBuffers);
104			REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceCoreAudio, ParameterBufferSize);
105			#endif // HAVE_COREAUDIO
106
107	schoenebeck	1934	AudioOutputDeviceFactory::AudioOutputDeviceMap AudioOutputDeviceFactory::mAudioOutputDevices;
108
109			/**
110			* Creates a new audio output device for the given driver name and
111			* parameters. Note, this method will also check whether it is actually
112			* allowed to create an instance of the given driver on its own and throw
113			* an Exception in case it is not allowed (this is the case for host plugin
114			* drivers like VST, AU, DSSI, LV2).
115			*
116			* @param DriverName - name of the driver of which a new device shall be created
117			* @param Parameters - device creation parameters which shall be passed to the driver's constructor
118			*
119			* @returns pointer to the new device instance
120			* @throws Exception - in case the device could not be created
121			*
122			* @see CreatePrivate()
123			*/
124	schoenebeck	880	AudioOutputDevice* AudioOutputDeviceFactory::Create(String DriverName, std::map<String,String> Parameters) throw (Exception) {
125	schoenebeck	1934	if (!InnerFactories.count(DriverName))
126			throw Exception("There is no audio output driver '" + DriverName + "'.");
127			if (!InnerFactories[DriverName]->isAutonomousDriver())
128			throw Exception("You cannot directly create a new audio output device of the '" + DriverName + "' driver!");
129
130			return CreatePrivate(DriverName, Parameters);
131			}
132
133			/**
134			* Same as Create(), but this method won't check whether it is allowed to
135			* create an instance of the given driver on its own. This method is
136			* usually called by host plugins (e.g. VST, AU, DSSI, LV2) to actually
137			* create their respective audio output devices for the sampler. Usually
138			* one shouldn't call this method directly, but call Create() instead.
139			*/
140			AudioOutputDevice* AudioOutputDeviceFactory::CreatePrivate(String DriverName, std::map<String,String> Parameters) throw (Exception) {
141	schoenebeck	880	if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
142	schoenebeck	1934	// let's see if we need to create parameters
143			std::map<String,DeviceCreationParameter*> thisDeviceParams;
144			DeviceParameterFactory* pParamFactory = ParameterFactories[DriverName];
145			if (pParamFactory) {
146			thisDeviceParams = pParamFactory->CreateAllParams(Parameters);
147			} else {
148			// no parameters are registered by the driver. Throw if any parameters were specified.
149			if (Parameters.size() != 0) throw Exception("Driver '" + DriverName + "' does not have any parameters.");
150			}
151
152			// get a free device id
153			int iDeviceId = -1;
154			for (int i = 0; i >= 0; i++) { // seek for a free place starting from the beginning
155			if (!mAudioOutputDevices[i]) {
156			iDeviceId = i;
157			break;
158			}
159			}
160			if (iDeviceId < 0)
161			throw Exception("Could not retrieve free device ID!");
162
163			// now create the device using those parameters
164	schoenebeck	200	AudioOutputDevice* pDevice = InnerFactories[DriverName]->Create(thisDeviceParams);
165	schoenebeck	1934	pDevice->setDeviceId(iDeviceId);
166			// now attach all parameters to the newely created device.
167			for (std::map<String,DeviceCreationParameter*>::iterator iter = thisDeviceParams.begin(); iter != thisDeviceParams.end(); iter++) {
168			iter->second->Attach(pDevice);
169			}
170
171			// add new audio device to the audio device list
172			mAudioOutputDevices[iDeviceId] = pDevice;
173
174			return pDevice;
175	schoenebeck	200	}
176
177			std::vector<String> AudioOutputDeviceFactory::AvailableDrivers() {
178			std::vector<String> result;
179			std::map<String, InnerFactory*>::iterator iter = InnerFactories.begin();
180			while (iter != InnerFactories.end()) {
181			result.push_back(iter->first);
182			iter++;
183			}
184			return result;
185			}
186
187			String AudioOutputDeviceFactory::AvailableDriversAsString() {
188			std::vector<String> drivers = AvailableDrivers();
189			String result;
190			std::vector<String>::iterator iter = drivers.begin();
191			for (; iter != drivers.end(); iter++) {
192			if (result != "") result += ",";
193			result += *iter;
194			}
195			return result;
196			}
197
198	schoenebeck	880	std::map<String,DeviceCreationParameter*> AudioOutputDeviceFactory::GetAvailableDriverParameters(String DriverName) throw (Exception) {
199			if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
200	schoenebeck	1934	std::map<String,DeviceCreationParameter*> thisDeviceParams;
201			DeviceParameterFactory* pParamFactory = ParameterFactories[DriverName];
202			if (pParamFactory) {
203			thisDeviceParams = pParamFactory->CreateAllParams();
204			}
205	schoenebeck	200	return thisDeviceParams;
206			}
207
208	schoenebeck	880	DeviceCreationParameter* AudioOutputDeviceFactory::GetDriverParameter(String DriverName, String ParameterName) throw (Exception) {
209	iliev	1835	if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
210			DeviceParameterFactory* pParamFactory = ParameterFactories[DriverName];
211			if (pParamFactory) {
212			try { return pParamFactory->Create(ParameterName); }
213			catch(Exception e) { }
214			}
215			throw Exception("Audio output driver '" + DriverName + "' does not have a parameter '" + ParameterName + "'.");
216	schoenebeck	200	}
217
218	schoenebeck	880	String AudioOutputDeviceFactory::GetDriverDescription(String DriverName) throw (Exception) {
219			if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
220	schoenebeck	200	return InnerFactories[DriverName]->Description();
221			}
222
223	schoenebeck	880	String AudioOutputDeviceFactory::GetDriverVersion(String DriverName) throw (Exception) {
224			if (!InnerFactories.count(DriverName)) throw Exception("There is no audio output driver '" + DriverName + "'.");
225	schoenebeck	200	return InnerFactories[DriverName]->Version();
226			}
227
228	persson	1889	void AudioOutputDeviceFactory::Unregister(String DriverName) {
229			std::map<String, InnerFactory*>::iterator iter = InnerFactories.find(DriverName);
230			if (iter != InnerFactories.end()) {
231			delete iter->second;
232			InnerFactories.erase(iter);
233			}
234
235			std::map<String, DeviceParameterFactory*>::iterator iterpf = ParameterFactories.find(DriverName);
236			if (iterpf != ParameterFactories.end()) {
237			delete iterpf->second;
238			ParameterFactories.erase(iterpf);
239			}
240			}
241
242	schoenebeck	1934	std::map<uint, AudioOutputDevice*> AudioOutputDeviceFactory::Devices() {
243			return mAudioOutputDevices;
244			}
245
246			/**
247			* Destroys the given device. Usually this method shouldn't be called
248			* directly, Sampler::DestroyAudioOutputDevice should be called instead,
249			* since it also takes care whether some sampler channel is still using
250			* the device, etc.
251			*/
252			void AudioOutputDeviceFactory::Destroy(AudioOutputDevice* pDevice) throw (Exception) {
253			if (pDevice && !pDevice->isAutonomousDevice())
254			throw Exception("You cannot directly destroy this '" + pDevice->Driver() + "' device!");
255
256			DestroyPrivate(pDevice);
257			}
258
259			void AudioOutputDeviceFactory::DestroyPrivate(AudioOutputDevice* pDevice) throw (Exception) {
260			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
261			for (; iter != mAudioOutputDevices.end(); iter++) {
262			if (iter->second == pDevice) {
263			// disable device
264			pDevice->Stop();
265			// remove device from the device list
266			mAudioOutputDevices.erase(iter);
267			// destroy and free device from memory
268			delete pDevice;
269
270			break;
271			}
272			}
273			}
274
275	schoenebeck	200	} // namespace LinuxSampler