/[svn]/linuxsampler/trunk/src/drivers/audio/AudioOutputDeviceJack.cpp
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revision 221 by schoenebeck, Fri Aug 20 17:25:19 2004 UTC revision 1748 by persson, Sun Jun 22 14:46:46 2008 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   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  *   *   it under the terms of the GNU General Public License as published by  *
# Line 23  Line 24 
24  #include "AudioOutputDeviceJack.h"  #include "AudioOutputDeviceJack.h"
25  #include "AudioOutputDeviceFactory.h"  #include "AudioOutputDeviceFactory.h"
26    
27    #include <errno.h>
28    
29  #if HAVE_JACK  #if HAVE_JACK
30    
31    #ifndef HAVE_JACK_CLIENT_NAME_SIZE
32    #define jack_client_name_size() 33
33    #endif
34    
35  namespace LinuxSampler {  namespace LinuxSampler {
36    
37      REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDeviceJack);      /// number of currently existing JACK audio output devices in LinuxSampler
38        static int existingJackDevices = 0;
39    
40    // *************** AudioChannelJack::ParameterName ***************
41    // *
42    
43        AudioOutputDeviceJack::AudioChannelJack::ParameterName::ParameterName(AudioChannelJack* pChannel) : AudioChannel::ParameterName(ToString(pChannel->ChannelNr)) {
44            this->pChannel = pChannel;
45        }
46    
47        void AudioOutputDeviceJack::AudioChannelJack::ParameterName::OnSetValue(String s) {
48            if (jack_port_set_name(pChannel->hJackPort, s.c_str())) throw AudioOutputException("Failed to rename JACK port");
49        }
50    
51    
52    
53    // *************** AudioChannelJack::ParameterJackBindings ***************
54    // *
55    
56        AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::ParameterJackBindings(AudioChannelJack* pChannel) : DeviceRuntimeParameterStrings(std::vector<String>()) {
57            this->pChannel = pChannel;
58        }
59    
60        String AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::Description() {
61            return "Bindings to other JACK clients";
62        }
63    
64        bool AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::Fix() {
65            return false;
66        }
67    
68        std::vector<String> AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::PossibilitiesAsString() {
69            const char** pPortNames = jack_get_ports(pChannel->pDevice->hJackClient, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput);
70            if (!pPortNames) return std::vector<String>();
71            std::vector<String> result;
72            for (int i = 0; pPortNames[i]; i++) result.push_back(pPortNames[i]);
73            free(pPortNames);
74            return result;
75        }
76    
77        void AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::OnSetValue(std::vector<String> vS) {
78            String src_name = ((DeviceCreationParameterString*)pChannel->pDevice->Parameters["NAME"])->ValueAsString() + ":" +
79                              ((DeviceRuntimeParameterString*)pChannel->Parameters["NAME"])->ValueAsString();
80            // disconnect all current bindings first
81            for (int i = 0; i < Bindings.size(); i++) {
82                String dst_name = Bindings[i];
83                int res = jack_disconnect(pChannel->pDevice->hJackClient, src_name.c_str(), dst_name.c_str());
84            }
85            // connect new bindings
86            for (int i = 0; i < vS.size(); i++) {
87                String dst_name = vS[i];
88                int res = jack_connect(pChannel->pDevice->hJackClient, src_name.c_str(), dst_name.c_str());
89                if (res == EEXIST) throw AudioOutputException("Jack: Connection to port '" + dst_name + "' already established");
90                else if (res)      throw AudioOutputException("Jack: Cannot connect port '" + src_name + "' to port '" + dst_name + "'");
91            }
92            // remember bindings
93            Bindings = vS;
94        }
95    
96        String AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::Name() {
97            return "JACK_BINDINGS";
98        }
99    
100    
101      /* Common parameters for now they'll have to be registered here. */  
102      REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterActive);  // *************** AudioChannelJack ***************
103      REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterSampleRate);  // *
104      REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDeviceJack, ParameterChannels);  
105        AudioOutputDeviceJack::AudioChannelJack::AudioChannelJack(uint ChannelNr, AudioOutputDeviceJack* pDevice) throw (AudioOutputException) : AudioChannel(ChannelNr, CreateJackPort(ChannelNr, pDevice), pDevice->uiMaxSamplesPerCycle) {
106            this->pDevice   = pDevice;
107            this->ChannelNr = ChannelNr;
108            delete Parameters["NAME"];
109            Parameters["NAME"]          = new ParameterName(this);
110            Parameters["JACK_BINDINGS"] = new ParameterJackBindings(this);
111        }
112    
113        AudioOutputDeviceJack::AudioChannelJack::~AudioChannelJack() {
114            //TODO: delete JACK port
115        }
116    
117        float* AudioOutputDeviceJack::AudioChannelJack::CreateJackPort(uint ChannelNr, AudioOutputDeviceJack* pDevice) throw (AudioOutputException) {
118            String port_id = ToString(ChannelNr);
119            hJackPort = jack_port_register(pDevice->hJackClient, port_id.c_str(), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
120            if (!hJackPort) throw AudioOutputException("Jack: Cannot register Jack output port.");
121            return (float*) jack_port_get_buffer(hJackPort, pDevice->uiMaxSamplesPerCycle);
122        }
123    
124    
125    
126    // *************** AudioOutputDeviceJack::ParameterName ***************
127    // *
128    
129        AudioOutputDeviceJack::ParameterName::ParameterName() : DeviceCreationParameterString() {
130            InitWithDefault(); // use default name
131        }
132    
133        AudioOutputDeviceJack::ParameterName::ParameterName(String s) throw (Exception) : DeviceCreationParameterString(s) {
134        }
135    
136        String AudioOutputDeviceJack::ParameterName::Description() {
137            return "Arbitrary JACK client name";
138        }
139    
140        bool AudioOutputDeviceJack::ParameterName::Fix() {
141            return true;
142        }
143    
144        bool AudioOutputDeviceJack::ParameterName::Mandatory() {
145            return false;
146        }
147    
148        std::map<String,DeviceCreationParameter*> AudioOutputDeviceJack::ParameterName::DependsAsParameters() {
149            return std::map<String,DeviceCreationParameter*>(); // no dependencies
150        }
151    
152        std::vector<String> AudioOutputDeviceJack::ParameterName::PossibilitiesAsString(std::map<String,String> Parameters) {
153            return std::vector<String>();
154        }
155    
156        optional<String> AudioOutputDeviceJack::ParameterName::DefaultAsString(std::map<String,String> Parameters) {
157            return (existingJackDevices) ? "LinuxSampler" + ToString(existingJackDevices) : "LinuxSampler";
158        }
159    
160        void AudioOutputDeviceJack::ParameterName::OnSetValue(String s) throw (Exception) {
161            // not possible, as parameter is fix
162        }
163    
164        String AudioOutputDeviceJack::ParameterName::Name() {
165            return "NAME";
166        }
167    
168    
169    
170    // *************** AudioOutputDeviceJack ***************
171    // *
172    
173      /**      /**
174       * Open and initialize connection to the JACK system.       * Open and initialize connection to the JACK system.
# Line 41  namespace LinuxSampler { Line 177  namespace LinuxSampler {
177       * @throws AudioOutputException  on error       * @throws AudioOutputException  on error
178       * @see AcquireChannels()       * @see AcquireChannels()
179       */       */
180      AudioOutputDeviceJack::AudioOutputDeviceJack(std::map<String,DeviceCreationParameter*> Parameters) : AudioOutputDevice(std::map<String,DeviceCreationParameter*>()) {      AudioOutputDeviceJack::AudioOutputDeviceJack(std::map<String,DeviceCreationParameter*> Parameters) : AudioOutputDevice(Parameters) {
181          if ((hJackClient = jack_client_new("LinuxSampler")) == 0)          JackClient* pJackClient = JackClient::CreateAudio(((DeviceCreationParameterString*)Parameters["NAME"])->ValueAsString());
182              throw AudioOutputException("Seems Jack server not running.");          existingJackDevices++;
183            pJackClient->SetAudioOutputDevice(this);
184          jack_set_process_callback(hJackClient, __libjack_process_callback, this);          hJackClient = pJackClient->hJackClient;
         jack_on_shutdown(hJackClient, __libjack_shutdown_callback, this);  
         if (jack_activate(hJackClient))  
             throw AudioOutputException("Jack: Cannot activate Jack client.");  
   
185          uiMaxSamplesPerCycle = jack_get_buffer_size(hJackClient);          uiMaxSamplesPerCycle = jack_get_buffer_size(hJackClient);
186    
187  #if 0          // create audio channels
188          // create amount of audio channels and jack output ports we need for autoconnect          AcquireChannels(((DeviceCreationParameterInt*)Parameters["CHANNELS"])->ValueAsInt());
189          for (uint p = 0; p < AutoConnectPorts; p++) {  
190              // create jack output port          // finally activate device if desired
191              std::stringstream portid; portid << "LinuxSampler:" << p;          if (((DeviceCreationParameterBool*)Parameters["ACTIVE"])->ValueAsBool()) Play();
             jack_port_t* newport;  
             if (newport = jack_port_register(hJackClient, portid.str().c_str(), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0)) {  
                 hJackPorts.push_back(newport);  
             }  
             else throw AudioOutputException("Jack: Cannot register Jack output port.");  
   
             // create LS audio channel  
             std::stringstream chanid; chanid << "Jack:" << p;  
             Channels.push_back(new AudioChannel((float*) jack_port_get_buffer(newport, uiMaxSamplesPerCycle), uiMaxSamplesPerCycle, chanid.str()));  
   
             // autoconnect port  
             if (jack_connect(hJackClient, portid.str().c_str(), AutoConnectPortIDs[p].c_str())) {  
                 std::stringstream err; err << "Jack: Cannot auto connect port " << p;  
                 throw AudioOutputException(err.str());  
             }  
         }  
 #endif  
192      }      }
193    
194      AudioOutputDeviceJack::~AudioOutputDeviceJack() {      AudioOutputDeviceJack::~AudioOutputDeviceJack() {
195          // destroy all audio channels          // destroy jack client if there is no midi device associated with it
196          for (int c = 0; c < Channels.size(); c++) delete Channels[c];          JackClient::ReleaseAudio(((DeviceCreationParameterString*)Parameters["NAME"])->ValueAsString());
197          // destroy jack client          existingJackDevices--;
         jack_client_close(hJackClient);  
198      }      }
199    
200      /**      /**
# Line 103  namespace LinuxSampler { Line 217  namespace LinuxSampler {
217      }      }
218    
219      bool AudioOutputDeviceJack::IsPlaying() {      bool AudioOutputDeviceJack::IsPlaying() {
220          csIsPlaying.GetUnsafe();          return csIsPlaying.GetUnsafe();
221      }      }
222    
223      void AudioOutputDeviceJack::Stop() {      void AudioOutputDeviceJack::Stop() {
224          csIsPlaying.PushAndUnlock(false);          csIsPlaying.PushAndUnlock(false);
225      }      }
226    
227      void AudioOutputDeviceJack::AcquireChannels(uint uiChannels) {      AudioChannel* AudioOutputDeviceJack::CreateChannel(uint ChannelNr) {
228          if (uiChannels > this->Channels.size()) {          return new AudioChannelJack(ChannelNr, this);
             for (int c = this->Channels.size(); c < uiChannels; c++) {  
                 // create new jack output port  
                 std::stringstream portid; portid << "LinuxSampler:" << c;  
                 jack_port_t* newport;  
                 if (newport = jack_port_register(hJackClient, portid.str().c_str(), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0)) {  
                     hJackPorts.push_back(newport);  
                 }  
                 else throw AudioOutputException("Jack: Cannot register Jack output port.");  
   
                 // create LS audio channel  
                 std::stringstream chanid; chanid << "Jack:" << c;  
                 Channels.push_back(new AudioChannel((float*) jack_port_get_buffer(newport, uiMaxSamplesPerCycle), uiMaxSamplesPerCycle, chanid.str()));  
             }  
         }  
229      }      }
230    
231      uint AudioOutputDeviceJack::MaxSamplesPerCycle() {      uint AudioOutputDeviceJack::MaxSamplesPerCycle() {
# Line 149  namespace LinuxSampler { Line 249  namespace LinuxSampler {
249      }      }
250    
251      String AudioOutputDeviceJack::Version() {      String AudioOutputDeviceJack::Version() {
252         String s = "$Revision: 1.10 $";         String s = "$Revision: 1.24 $";
253         return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword         return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
254      }      }
255    
256    
257    
258    // *************** JackClient ***************
259    // *
260    
261      // libjack callback functions      // libjack callback functions
262    
263      int __libjack_process_callback(jack_nframes_t nframes, void* arg) {      int linuxsampler_libjack_process_callback(jack_nframes_t nframes, void* arg) {
264          AudioOutputDeviceJack* pAudioOutputDeviceJack = (AudioOutputDeviceJack*) arg;          return static_cast<JackClient*>(arg)->Process(nframes);
         return pAudioOutputDeviceJack->Process(nframes);  
265      }      }
266    
267      void __libjack_shutdown_callback(void* arg) {      void linuxsampler_libjack_shutdown_callback(void* arg) {
268          AudioOutputDeviceJack* pAudioOutputDeviceJack = (AudioOutputDeviceJack*) arg;          static_cast<JackClient*>(arg)->Stop();
         pAudioOutputDeviceJack->Stop();  
269          fprintf(stderr, "Jack: Jack server shutdown, exiting.\n");          fprintf(stderr, "Jack: Jack server shutdown, exiting.\n");
270      }      }
271    
272        std::map<String, JackClient*> JackClient::Clients;
273    
274        int JackClient::Process(uint Samples) {
275            const config_t& config = ConfigReader.Lock();
276    #if HAVE_JACK_MIDI
277            if (config.MidiDevice) config.MidiDevice->Process(Samples);
278    #endif
279            int res = config.AudioDevice ? config.AudioDevice->Process(Samples) : 0;
280            ConfigReader.Unlock();
281            return res;
282        }
283    
284        void JackClient::Stop() {
285            const config_t& config = ConfigReader.Lock();
286            if (config.AudioDevice) config.AudioDevice->Stop();
287            ConfigReader.Unlock();
288        }
289    
290        JackClient::JackClient(String Name) : ConfigReader(Config) {
291            {
292                config_t& config = Config.GetConfigForUpdate();
293                config.AudioDevice = 0;
294    #if HAVE_JACK_MIDI
295                config.MidiDevice = 0;
296    #endif
297            }
298            {
299                config_t& config = Config.SwitchConfig();
300                config.AudioDevice = 0;
301    #if HAVE_JACK_MIDI
302                config.MidiDevice = 0;
303    #endif
304            }
305            audio = midi = false;
306            if (Name.size() >= jack_client_name_size())
307                throw Exception("JACK client name too long");
308    #if HAVE_JACK_CLIENT_OPEN
309            hJackClient = jack_client_open(Name.c_str(), JackNullOption, NULL);
310    #else
311            hJackClient = jack_client_new(Name.c_str());
312    #endif
313            if (!hJackClient)
314                throw Exception("Seems Jack server is not running.");
315            jack_set_process_callback(hJackClient, linuxsampler_libjack_process_callback, this);
316            jack_on_shutdown(hJackClient, linuxsampler_libjack_shutdown_callback, this);
317            if (jack_activate(hJackClient))
318                throw Exception("Jack: Cannot activate Jack client.");
319        }
320    
321        JackClient::~JackClient() {
322            jack_client_close(hJackClient);
323        }
324    
325        void JackClient::SetAudioOutputDevice(AudioOutputDeviceJack* device) {
326            Config.GetConfigForUpdate().AudioDevice = device;
327            Config.SwitchConfig().AudioDevice = device;
328        }
329    
330    #if HAVE_JACK_MIDI
331        void JackClient::SetMidiInputDevice(MidiInputDeviceJack* device) {
332            Config.GetConfigForUpdate().MidiDevice = device;
333            Config.SwitchConfig().MidiDevice = device;
334        }
335    #endif
336    
337        JackClient* JackClient::CreateAudio(String Name) { // static
338            JackClient* client;
339            std::map<String, JackClient*>::const_iterator it = Clients.find(Name);
340            if (it == Clients.end()) {
341                client = new JackClient(Name);
342                Clients[Name] = client;
343            } else {
344                client = it->second;
345                if (client->audio) throw Exception("Jack audio device '" + Name + "' already exists");
346            }
347            client->audio = true;
348            return client;
349        }
350    
351        JackClient* JackClient::CreateMidi(String Name) { // static
352            JackClient* client;
353            std::map<String, JackClient*>::const_iterator it = Clients.find(Name);
354            if (it == Clients.end()) {
355                client = new JackClient(Name);
356                Clients[Name] = client;
357            } else {
358                client = it->second;
359                if (client->midi) throw Exception("Jack MIDI device '" + Name + "' already exists");
360            }
361            client->midi = true;
362            return client;
363        }
364    
365        void JackClient::ReleaseAudio(String Name) { // static
366            JackClient* client = Clients[Name];
367            client->SetAudioOutputDevice(0);
368            client->audio = false;
369            if (!client->midi) {
370                Clients.erase(Name);
371                delete client;
372            }
373        }
374    
375        void JackClient::ReleaseMidi(String Name) { // static
376            JackClient* client = Clients[Name];
377    #if HAVE_JACK_MIDI
378            client->SetMidiInputDevice(0);
379    #endif
380            client->midi = false;
381            if (!client->audio) {
382                Clients.erase(Name);
383                delete client;
384            }
385        }
386    
387  } // namespace LinuxSampler  } // namespace LinuxSampler
388    
389  #endif // HAVE_JACK  #endif // HAVE_JACK
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