drivers/audio/AudioOutputDevice.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2007 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 "AudioOutputDeviceFactory.h"
#include "AudioOutputDevice.h"
#include "../../common/global_private.h"

namespace LinuxSampler {

// *************** ParameterActive ***************
// *

    AudioOutputDevice::ParameterActive::ParameterActive() : DeviceCreationParameterBool() {
        InitWithDefault();
    }

    AudioOutputDevice::ParameterActive::ParameterActive(String s) : DeviceCreationParameterBool(s) {
    }

    String AudioOutputDevice::ParameterActive::Description() {
        return "Enable / disable device";
    }

    bool AudioOutputDevice::ParameterActive::Fix() {
        return false;
    }

    bool AudioOutputDevice::ParameterActive::Mandatory() {
        return false;
    }

    std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterActive::DependsAsParameters() {
        return std::map<String,DeviceCreationParameter*>();
    }

    optional<bool> AudioOutputDevice::ParameterActive::DefaultAsBool(std::map<String,String> Parameters) {
        return true;
    }

    void AudioOutputDevice::ParameterActive::OnSetValue(bool b) throw (Exception) {
        if (b) ((AudioOutputDevice*)pDevice)->Play();
        else ((AudioOutputDevice*)pDevice)->Stop();
    }

    String AudioOutputDevice::ParameterActive::Name() {
        return "ACTIVE";
    }


// *************** ParameterSampleRate ***************
// *

    AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() : DeviceCreationParameterInt() {
        InitWithDefault();
    }

    AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(String s) : DeviceCreationParameterInt(s) {
    }

    String AudioOutputDevice::ParameterSampleRate::Description() {
        return "Output sample rate";
    }

    bool AudioOutputDevice::ParameterSampleRate::Fix() {
        return true;
    }

    bool AudioOutputDevice::ParameterSampleRate::Mandatory() {
        return false;
    }

    std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterSampleRate::DependsAsParameters() {
        return std::map<String,DeviceCreationParameter*>();
    }

    optional<int> AudioOutputDevice::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) {
        return 44100;
    }

    optional<int> AudioOutputDevice::ParameterSampleRate::RangeMinAsInt(std::map<String,String> Parameters) {
        return optional<int>::nothing;
    }

    optional<int> AudioOutputDevice::ParameterSampleRate::RangeMaxAsInt(std::map<String,String> Parameters) {
        return optional<int>::nothing;
    }

    std::vector<int> AudioOutputDevice::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) {
        return std::vector<int>();
    }

    void AudioOutputDevice::ParameterSampleRate::OnSetValue(int i) throw (Exception) {
        /* cannot happen, as parameter is fix */
    }

    String AudioOutputDevice::ParameterSampleRate::Name() {
        return "SAMPLERATE";
    }


// *************** ParameterChannels ***************
// *

    AudioOutputDevice::ParameterChannels::ParameterChannels() : DeviceCreationParameterInt() {
       InitWithDefault();
    }

    AudioOutputDevice::ParameterChannels::ParameterChannels(String s) : DeviceCreationParameterInt(s) {
    }

    String AudioOutputDevice::ParameterChannels::Description() {
        return "Number of output channels";
    }

    bool AudioOutputDevice::ParameterChannels::Fix() {
        return false;
    }

    bool AudioOutputDevice::ParameterChannels::Mandatory() {
        return false;
    }

    std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterChannels::DependsAsParameters() {
        return std::map<String,DeviceCreationParameter*>();
    }

    optional<int> AudioOutputDevice::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) {
        return 2;
    }

    optional<int> AudioOutputDevice::ParameterChannels::RangeMinAsInt(std::map<String,String> Parameters) {
        return 1;
    }

    optional<int> AudioOutputDevice::ParameterChannels::RangeMaxAsInt(std::map<String,String> Parameters) {
        return optional<int>::nothing;
    }

    std::vector<int> AudioOutputDevice::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) {
        return std::vector<int>();
    }

    void AudioOutputDevice::ParameterChannels::OnSetValue(int i) throw (Exception) {
        ((AudioOutputDevice*)pDevice)->AcquireChannels(i);
    }

    String AudioOutputDevice::ParameterChannels::Name() {
        return "CHANNELS";
    }


// *************** AudioOutputDevice ***************
// *

    AudioOutputDevice::AudioOutputDevice(std::map<String,DeviceCreationParameter*> DriverParameters)
        : EnginesReader(Engines) {
        this->Parameters = DriverParameters;
    }

    AudioOutputDevice::~AudioOutputDevice() {
        // delete all audio channels
        {
            std::vector<AudioChannel*>::iterator iter = Channels.begin();
            while (iter != Channels.end()) {
                delete *iter;
                iter++;
            }
            Channels.clear();
        }

        // delete all device parameters
        {
            std::map<String,DeviceCreationParameter*>::iterator iter = Parameters.begin();
            while (iter != Parameters.end()) {
                delete iter->second;
                iter++;
            }
            Parameters.clear();
        }
    }

    void AudioOutputDevice::Connect(Engine* pEngine) {
        std::set<Engine*>& engines = Engines.GetConfigForUpdate();
        if (engines.find(pEngine) == engines.end()) {
            engines.insert(pEngine);
            Engines.SwitchConfig().insert(pEngine);
            // make sure the engine knows about the connection
            //pEngine->Connect(this);
        }
    }

    void AudioOutputDevice::Disconnect(Engine* pEngine) {
        std::set<Engine*>& engines = Engines.GetConfigForUpdate();
        if (engines.find(pEngine) != engines.end()) { // if clause to prevent disconnect loop
            engines.erase(pEngine);
            Engines.SwitchConfig().erase(pEngine);
            // make sure the engine knows about the disconnection
            //pEngine->DisconnectAudioOutputDevice();
        }
    }

    AudioChannel* AudioOutputDevice::Channel(uint ChannelIndex) {
        return (ChannelIndex < Channels.size()) ? Channels[ChannelIndex] : NULL;
    }

    void AudioOutputDevice::AcquireChannels(uint Channels) {
        if (Channels > this->Channels.size()) {
            for (int c = this->Channels.size(); c < Channels; c++) {
                this->Channels.push_back(CreateChannel(c));
            }
        }
    }

    uint AudioOutputDevice::ChannelCount() {
        return Channels.size();
    }

    std::map<String,DeviceCreationParameter*> AudioOutputDevice::DeviceParameters() {
        return Parameters;
    }

    int AudioOutputDevice::RenderAudio(uint Samples) {
        if (Channels.empty()) return 0;

        // reset all channels with silence
        {
            std::vector<AudioChannel*>::iterator iterChannels = Channels.begin();
            std::vector<AudioChannel*>::iterator end          = Channels.end();
            for (; iterChannels != end; iterChannels++)
                (*iterChannels)->Clear(); // zero out audio buffer
        }

        int result = 0;

        // let all connected engines render audio for the current audio fragment cycle
        const std::set<Engine*>& engines = EnginesReader.Lock();
        #if CONFIG_RT_EXCEPTIONS
        try
        #endif // CONFIG_RT_EXCEPTIONS
        {
            std::set<Engine*>::iterator iterEngine = engines.begin();
            std::set<Engine*>::iterator end        = engines.end();
            for (; iterEngine != end; iterEngine++) {
                int res = (*iterEngine)->RenderAudio(Samples);
                if (res != 0) result = res;
            }
        }
        #if CONFIG_RT_EXCEPTIONS
        catch (std::runtime_error se) {
            std::cerr << "std::runtime_error: " << se.what() << std::endl << std::flush;
            exit(EXIT_FAILURE);
        }
        #endif // CONFIG_RT_EXCEPTIONS

        EnginesReader.Unlock();
        return result;
    }

    int AudioOutputDevice::RenderSilence(uint Samples) {
        if (Channels.empty()) return 0;

        // reset all channels with silence
        {
            std::vector<AudioChannel*>::iterator iterChannels = Channels.begin();
            std::vector<AudioChannel*>::iterator end          = Channels.end();
            for (; iterChannels != end; iterChannels++)
                (*iterChannels)->Clear(); // zero out audio buffer
        }

        return 0;
    }

} // 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	schoenebeck	1424	* Copyright (C) 2005 - 2007 Christian Schoenebeck *
7	schoenebeck	200	* *
8			* This program is free software; you can redistribute it and/or modify *
9			* 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			* This program is distributed in the hope that it will be useful, *
14			* 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			* along with this program; if not, write to the Free Software *
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21			* MA 02111-1307 USA *
22			***************************************************************************/
23
24			#include "AudioOutputDeviceFactory.h"
25			#include "AudioOutputDevice.h"
26	schoenebeck	1424	#include "../../common/global_private.h"
27	schoenebeck	200
28			namespace LinuxSampler {
29
30	schoenebeck	226	// ************* ParameterActive *************
31			// *
32
33			AudioOutputDevice::ParameterActive::ParameterActive() : DeviceCreationParameterBool() {
34			InitWithDefault();
35			}
36
37			AudioOutputDevice::ParameterActive::ParameterActive(String s) : DeviceCreationParameterBool(s) {
38			}
39
40			String AudioOutputDevice::ParameterActive::Description() {
41			return "Enable / disable device";
42			}
43
44			bool AudioOutputDevice::ParameterActive::Fix() {
45			return false;
46			}
47
48			bool AudioOutputDevice::ParameterActive::Mandatory() {
49			return false;
50			}
51
52			std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterActive::DependsAsParameters() {
53			return std::map<String,DeviceCreationParameter*>();
54			}
55
56			optional<bool> AudioOutputDevice::ParameterActive::DefaultAsBool(std::map<String,String> Parameters) {
57			return true;
58			}
59
60	schoenebeck	880	void AudioOutputDevice::ParameterActive::OnSetValue(bool b) throw (Exception) {
61	schoenebeck	226	if (b) ((AudioOutputDevice*)pDevice)->Play();
62			else ((AudioOutputDevice*)pDevice)->Stop();
63			}
64
65			String AudioOutputDevice::ParameterActive::Name() {
66			return "ACTIVE";
67			}
68
69
70
71			// ************* ParameterSampleRate *************
72			// *
73
74			AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() : DeviceCreationParameterInt() {
75			InitWithDefault();
76			}
77
78			AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(String s) : DeviceCreationParameterInt(s) {
79			}
80
81			String AudioOutputDevice::ParameterSampleRate::Description() {
82			return "Output sample rate";
83			}
84
85			bool AudioOutputDevice::ParameterSampleRate::Fix() {
86			return true;
87			}
88
89			bool AudioOutputDevice::ParameterSampleRate::Mandatory() {
90			return false;
91			}
92
93			std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterSampleRate::DependsAsParameters() {
94			return std::map<String,DeviceCreationParameter*>();
95			}
96
97			optional<int> AudioOutputDevice::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) {
98			return 44100;
99			}
100
101			optional<int> AudioOutputDevice::ParameterSampleRate::RangeMinAsInt(std::map<String,String> Parameters) {
102			return optional<int>::nothing;
103			}
104
105			optional<int> AudioOutputDevice::ParameterSampleRate::RangeMaxAsInt(std::map<String,String> Parameters) {
106			return optional<int>::nothing;
107			}
108
109			std::vector<int> AudioOutputDevice::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) {
110			return std::vector<int>();
111			}
112
113	schoenebeck	880	void AudioOutputDevice::ParameterSampleRate::OnSetValue(int i) throw (Exception) {
114	schoenebeck	226	/* cannot happen, as parameter is fix */
115			}
116
117			String AudioOutputDevice::ParameterSampleRate::Name() {
118			return "SAMPLERATE";
119			}
120
121
122
123			// ************* ParameterChannels *************
124			// *
125
126			AudioOutputDevice::ParameterChannels::ParameterChannels() : DeviceCreationParameterInt() {
127			InitWithDefault();
128			}
129
130			AudioOutputDevice::ParameterChannels::ParameterChannels(String s) : DeviceCreationParameterInt(s) {
131			}
132
133			String AudioOutputDevice::ParameterChannels::Description() {
134			return "Number of output channels";
135			}
136
137			bool AudioOutputDevice::ParameterChannels::Fix() {
138			return false;
139			}
140
141			bool AudioOutputDevice::ParameterChannels::Mandatory() {
142			return false;
143			}
144
145			std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterChannels::DependsAsParameters() {
146			return std::map<String,DeviceCreationParameter*>();
147			}
148
149			optional<int> AudioOutputDevice::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) {
150			return 2;
151			}
152
153			optional<int> AudioOutputDevice::ParameterChannels::RangeMinAsInt(std::map<String,String> Parameters) {
154	iliev	1305	return 1;
155	schoenebeck	226	}
156
157			optional<int> AudioOutputDevice::ParameterChannels::RangeMaxAsInt(std::map<String,String> Parameters) {
158	schoenebeck	1599	return optional<int>::nothing;
159	schoenebeck	226	}
160
161			std::vector<int> AudioOutputDevice::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) {
162			return std::vector<int>();
163			}
164
165	schoenebeck	880	void AudioOutputDevice::ParameterChannels::OnSetValue(int i) throw (Exception) {
166	schoenebeck	226	((AudioOutputDevice*)pDevice)->AcquireChannels(i);
167			}
168
169			String AudioOutputDevice::ParameterChannels::Name() {
170			return "CHANNELS";
171			}
172
173
174
175			// ************* AudioOutputDevice *************
176			// *
177
178	persson	846	AudioOutputDevice::AudioOutputDevice(std::map<String,DeviceCreationParameter*> DriverParameters)
179			: EnginesReader(Engines) {
180	schoenebeck	200	this->Parameters = DriverParameters;
181			}
182
183			AudioOutputDevice::~AudioOutputDevice() {
184	schoenebeck	226	// delete all audio channels
185			{
186			std::vector<AudioChannel*>::iterator iter = Channels.begin();
187			while (iter != Channels.end()) {
188			delete *iter;
189			iter++;
190			}
191	persson	836	Channels.clear();
192	schoenebeck	200	}
193	schoenebeck	226
194			// delete all device parameters
195			{
196			std::map<String,DeviceCreationParameter*>::iterator iter = Parameters.begin();
197			while (iter != Parameters.end()) {
198			delete iter->second;
199			iter++;
200			}
201	persson	835	Parameters.clear();
202	schoenebeck	226	}
203	schoenebeck	200	}
204
205	schoenebeck	412	void AudioOutputDevice::Connect(Engine* pEngine) {
206	persson	840	std::set<Engine*>& engines = Engines.GetConfigForUpdate();
207			if (engines.find(pEngine) == engines.end()) {
208			engines.insert(pEngine);
209			Engines.SwitchConfig().insert(pEngine);
210	schoenebeck	412	// make sure the engine knows about the connection
211			//pEngine->Connect(this);
212	schoenebeck	200	}
213			}
214
215	schoenebeck	412	void AudioOutputDevice::Disconnect(Engine* pEngine) {
216	persson	840	std::set<Engine*>& engines = Engines.GetConfigForUpdate();
217			if (engines.find(pEngine) != engines.end()) { // if clause to prevent disconnect loop
218			engines.erase(pEngine);
219			Engines.SwitchConfig().erase(pEngine);
220	schoenebeck	412	// make sure the engine knows about the disconnection
221			//pEngine->DisconnectAudioOutputDevice();
222	schoenebeck	200	}
223			}
224
225			AudioChannel* AudioOutputDevice::Channel(uint ChannelIndex) {
226			return (ChannelIndex < Channels.size()) ? Channels[ChannelIndex] : NULL;
227			}
228
229	schoenebeck	226	void AudioOutputDevice::AcquireChannels(uint Channels) {
230			if (Channels > this->Channels.size()) {
231			for (int c = this->Channels.size(); c < Channels; c++) {
232			this->Channels.push_back(CreateChannel(c));
233			}
234			}
235			}
236
237	schoenebeck	1001	uint AudioOutputDevice::ChannelCount() {
238			return Channels.size();
239			}
240
241	schoenebeck	200	std::map<String,DeviceCreationParameter*> AudioOutputDevice::DeviceParameters() {
242			return Parameters;
243			}
244
245			int AudioOutputDevice::RenderAudio(uint Samples) {
246			if (Channels.empty()) return 0;
247
248			// reset all channels with silence
249			{
250			std::vector<AudioChannel*>::iterator iterChannels = Channels.begin();
251			std::vector<AudioChannel*>::iterator end = Channels.end();
252			for (; iterChannels != end; iterChannels++)
253			(*iterChannels)->Clear(); // zero out audio buffer
254			}
255
256			int result = 0;
257
258			// let all connected engines render audio for the current audio fragment cycle
259	persson	846	const std::set<Engine*>& engines = EnginesReader.Lock();
260	schoenebeck	554	#if CONFIG_RT_EXCEPTIONS
261	schoenebeck	272	try
262	schoenebeck	554	#endif // CONFIG_RT_EXCEPTIONS
263	schoenebeck	200	{
264	persson	840	std::set<Engine*>::iterator iterEngine = engines.begin();
265			std::set<Engine*>::iterator end = engines.end();
266	schoenebeck	412	for (; iterEngine != end; iterEngine++) {
267			int res = (*iterEngine)->RenderAudio(Samples);
268	schoenebeck	200	if (res != 0) result = res;
269			}
270			}
271	schoenebeck	554	#if CONFIG_RT_EXCEPTIONS
272	schoenebeck	272	catch (std::runtime_error se) {
273			std::cerr << "std::runtime_error: " << se.what() << std::endl << std::flush;
274			exit(EXIT_FAILURE);
275			}
276	schoenebeck	554	#endif // CONFIG_RT_EXCEPTIONS
277	schoenebeck	200
278	persson	846	EnginesReader.Unlock();
279	schoenebeck	200	return result;
280			}
281
282			int AudioOutputDevice::RenderSilence(uint Samples) {
283			if (Channels.empty()) return 0;
284
285			// reset all channels with silence
286			{
287			std::vector<AudioChannel*>::iterator iterChannels = Channels.begin();
288			std::vector<AudioChannel*>::iterator end = Channels.end();
289			for (; iterChannels != end; iterChannels++)
290			(*iterChannels)->Clear(); // zero out audio buffer
291			}
292
293			return 0;
294			}
295
296			} // namespace LinuxSampler