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>();
    }

    int AudioOutputDevice::ParameterSampleRate::ValueAsInt() {
        return (pDevice) ? (int) ((AudioOutputDevice*)pDevice)->SampleRate()
                         : DeviceCreationParameterInt::ValueAsInt();
    }

    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	1607	int AudioOutputDevice::ParameterSampleRate::ValueAsInt() {
114			return (pDevice) ? (int) ((AudioOutputDevice*)pDevice)->SampleRate()
115			: DeviceCreationParameterInt::ValueAsInt();
116			}
117
118	schoenebeck	880	void AudioOutputDevice::ParameterSampleRate::OnSetValue(int i) throw (Exception) {
119	schoenebeck	226	/* cannot happen, as parameter is fix */
120			}
121
122			String AudioOutputDevice::ParameterSampleRate::Name() {
123			return "SAMPLERATE";
124			}
125
126
127
128			// ************* ParameterChannels *************
129			// *
130
131			AudioOutputDevice::ParameterChannels::ParameterChannels() : DeviceCreationParameterInt() {
132			InitWithDefault();
133			}
134
135			AudioOutputDevice::ParameterChannels::ParameterChannels(String s) : DeviceCreationParameterInt(s) {
136			}
137
138			String AudioOutputDevice::ParameterChannels::Description() {
139			return "Number of output channels";
140			}
141
142			bool AudioOutputDevice::ParameterChannels::Fix() {
143			return false;
144			}
145
146			bool AudioOutputDevice::ParameterChannels::Mandatory() {
147			return false;
148			}
149
150			std::map<String,DeviceCreationParameter*> AudioOutputDevice::ParameterChannels::DependsAsParameters() {
151			return std::map<String,DeviceCreationParameter*>();
152			}
153
154			optional<int> AudioOutputDevice::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) {
155			return 2;
156			}
157
158			optional<int> AudioOutputDevice::ParameterChannels::RangeMinAsInt(std::map<String,String> Parameters) {
159	iliev	1305	return 1;
160	schoenebeck	226	}
161
162			optional<int> AudioOutputDevice::ParameterChannels::RangeMaxAsInt(std::map<String,String> Parameters) {
163	schoenebeck	1599	return optional<int>::nothing;
164	schoenebeck	226	}
165
166			std::vector<int> AudioOutputDevice::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) {
167			return std::vector<int>();
168			}
169
170	schoenebeck	880	void AudioOutputDevice::ParameterChannels::OnSetValue(int i) throw (Exception) {
171	schoenebeck	226	((AudioOutputDevice*)pDevice)->AcquireChannels(i);
172			}
173
174			String AudioOutputDevice::ParameterChannels::Name() {
175			return "CHANNELS";
176			}
177
178
179
180			// ************* AudioOutputDevice *************
181			// *
182
183	persson	846	AudioOutputDevice::AudioOutputDevice(std::map<String,DeviceCreationParameter*> DriverParameters)
184			: EnginesReader(Engines) {
185	schoenebeck	200	this->Parameters = DriverParameters;
186			}
187
188			AudioOutputDevice::~AudioOutputDevice() {
189	schoenebeck	226	// delete all audio channels
190			{
191			std::vector<AudioChannel*>::iterator iter = Channels.begin();
192			while (iter != Channels.end()) {
193			delete *iter;
194			iter++;
195			}
196	persson	836	Channels.clear();
197	schoenebeck	200	}
198	schoenebeck	226
199			// delete all device parameters
200			{
201			std::map<String,DeviceCreationParameter*>::iterator iter = Parameters.begin();
202			while (iter != Parameters.end()) {
203			delete iter->second;
204			iter++;
205			}
206	persson	835	Parameters.clear();
207	schoenebeck	226	}
208	schoenebeck	200	}
209
210	schoenebeck	412	void AudioOutputDevice::Connect(Engine* pEngine) {
211	persson	840	std::set<Engine*>& engines = Engines.GetConfigForUpdate();
212			if (engines.find(pEngine) == engines.end()) {
213			engines.insert(pEngine);
214			Engines.SwitchConfig().insert(pEngine);
215	schoenebeck	412	// make sure the engine knows about the connection
216			//pEngine->Connect(this);
217	schoenebeck	200	}
218			}
219
220	schoenebeck	412	void AudioOutputDevice::Disconnect(Engine* pEngine) {
221	persson	840	std::set<Engine*>& engines = Engines.GetConfigForUpdate();
222			if (engines.find(pEngine) != engines.end()) { // if clause to prevent disconnect loop
223			engines.erase(pEngine);
224			Engines.SwitchConfig().erase(pEngine);
225	schoenebeck	412	// make sure the engine knows about the disconnection
226			//pEngine->DisconnectAudioOutputDevice();
227	schoenebeck	200	}
228			}
229
230			AudioChannel* AudioOutputDevice::Channel(uint ChannelIndex) {
231			return (ChannelIndex < Channels.size()) ? Channels[ChannelIndex] : NULL;
232			}
233
234	schoenebeck	226	void AudioOutputDevice::AcquireChannels(uint Channels) {
235			if (Channels > this->Channels.size()) {
236			for (int c = this->Channels.size(); c < Channels; c++) {
237			this->Channels.push_back(CreateChannel(c));
238			}
239			}
240			}
241
242	schoenebeck	1001	uint AudioOutputDevice::ChannelCount() {
243			return Channels.size();
244			}
245
246	schoenebeck	200	std::map<String,DeviceCreationParameter*> AudioOutputDevice::DeviceParameters() {
247			return Parameters;
248			}
249
250			int AudioOutputDevice::RenderAudio(uint Samples) {
251			if (Channels.empty()) return 0;
252
253			// reset all channels with silence
254			{
255			std::vector<AudioChannel*>::iterator iterChannels = Channels.begin();
256			std::vector<AudioChannel*>::iterator end = Channels.end();
257			for (; iterChannels != end; iterChannels++)
258			(*iterChannels)->Clear(); // zero out audio buffer
259			}
260
261			int result = 0;
262
263			// let all connected engines render audio for the current audio fragment cycle
264	persson	846	const std::set<Engine*>& engines = EnginesReader.Lock();
265	schoenebeck	554	#if CONFIG_RT_EXCEPTIONS
266	schoenebeck	272	try
267	schoenebeck	554	#endif // CONFIG_RT_EXCEPTIONS
268	schoenebeck	200	{
269	persson	840	std::set<Engine*>::iterator iterEngine = engines.begin();
270			std::set<Engine*>::iterator end = engines.end();
271	schoenebeck	412	for (; iterEngine != end; iterEngine++) {
272			int res = (*iterEngine)->RenderAudio(Samples);
273	schoenebeck	200	if (res != 0) result = res;
274			}
275			}
276	schoenebeck	554	#if CONFIG_RT_EXCEPTIONS
277	schoenebeck	272	catch (std::runtime_error se) {
278			std::cerr << "std::runtime_error: " << se.what() << std::endl << std::flush;
279			exit(EXIT_FAILURE);
280			}
281	schoenebeck	554	#endif // CONFIG_RT_EXCEPTIONS
282	schoenebeck	200
283	persson	846	EnginesReader.Unlock();
284	schoenebeck	200	return result;
285			}
286
287			int AudioOutputDevice::RenderSilence(uint Samples) {
288			if (Channels.empty()) return 0;
289
290			// reset all channels with silence
291			{
292			std::vector<AudioChannel*>::iterator iterChannels = Channels.begin();
293			std::vector<AudioChannel*>::iterator end = Channels.end();
294			for (; iterChannels != end; iterChannels++)
295			(*iterChannels)->Clear(); // zero out audio buffer
296			}
297
298			return 0;
299			}
300
301			} // namespace LinuxSampler