/[svn]/linuxsampler/trunk/src/drivers/audio/AudioOutputDeviceJack.cpp
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revision 403 by schoenebeck, Tue Feb 22 20:37:59 2005 UTC revision 2410 by schoenebeck, Sat Feb 2 18:52:15 2013 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 - 2013 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 65  namespace LinuxSampler { Line 66  namespace LinuxSampler {
66      }      }
67    
68      std::vector<String> AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::PossibilitiesAsString() {      std::vector<String> AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::PossibilitiesAsString() {
69          const char** pPortNames = jack_get_ports(pChannel->pDevice->hJackClient, NULL, NULL, JackPortIsInput);          const char** pPortNames = jack_get_ports(pChannel->pDevice->hJackClient, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput);
70          if (!pPortNames) return std::vector<String>();          if (!pPortNames) return std::vector<String>();
71          std::vector<String> result;          std::vector<String> result;
72          for (int i = 0; pPortNames[i]; i++) result.push_back(pPortNames[i]);          for (int i = 0; pPortNames[i]; i++) result.push_back(pPortNames[i]);
73          //free(pPortNames); FIXME: pPortNames should be freed here          free(pPortNames);
74          return result;          return result;
75      }      }
76    
77      void AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::OnSetValue(std::vector<String> vS) {      void AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::OnSetValue(std::vector<String> vS) {
         // TODO: we should remove all existing bindings before we connect new ones here  
78          String src_name = ((DeviceCreationParameterString*)pChannel->pDevice->Parameters["NAME"])->ValueAsString() + ":" +          String src_name = ((DeviceCreationParameterString*)pChannel->pDevice->Parameters["NAME"])->ValueAsString() + ":" +
79                            ((DeviceRuntimeParameterString*)pChannel->Parameters["NAME"])->ValueAsString();                            ((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++) {          for (int i = 0; i < vS.size(); i++) {
87              String dst_name = vS[i];              String dst_name = vS[i];
88              int res = jack_connect(pChannel->pDevice->hJackClient, src_name.c_str(), dst_name.c_str());              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");              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 + "'");              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() {      String AudioOutputDeviceJack::AudioChannelJack::ParameterJackBindings::Name() {
# Line 97  namespace LinuxSampler { Line 105  namespace LinuxSampler {
105      AudioOutputDeviceJack::AudioChannelJack::AudioChannelJack(uint ChannelNr, AudioOutputDeviceJack* pDevice) throw (AudioOutputException) : AudioChannel(ChannelNr, CreateJackPort(ChannelNr, pDevice), pDevice->uiMaxSamplesPerCycle) {      AudioOutputDeviceJack::AudioChannelJack::AudioChannelJack(uint ChannelNr, AudioOutputDeviceJack* pDevice) throw (AudioOutputException) : AudioChannel(ChannelNr, CreateJackPort(ChannelNr, pDevice), pDevice->uiMaxSamplesPerCycle) {
106          this->pDevice   = pDevice;          this->pDevice   = pDevice;
107          this->ChannelNr = ChannelNr;          this->ChannelNr = ChannelNr;
108            delete Parameters["NAME"];
109          Parameters["NAME"]          = new ParameterName(this);          Parameters["NAME"]          = new ParameterName(this);
110          Parameters["JACK_BINDINGS"] = new ParameterJackBindings(this);          Parameters["JACK_BINDINGS"] = new ParameterJackBindings(this);
111      }      }
# Line 111  namespace LinuxSampler { Line 120  namespace LinuxSampler {
120          if (!hJackPort) throw AudioOutputException("Jack: Cannot register Jack output port.");          if (!hJackPort) throw AudioOutputException("Jack: Cannot register Jack output port.");
121          return (float*) jack_port_get_buffer(hJackPort, pDevice->uiMaxSamplesPerCycle);          return (float*) jack_port_get_buffer(hJackPort, pDevice->uiMaxSamplesPerCycle);
122      }      }
123        
124        void AudioOutputDeviceJack::AudioChannelJack::UpdateJackBuffer(uint size) {
125            SetBuffer(
126               (float*)jack_port_get_buffer(hJackPort, size)
127            );
128        }
129    
130    
131    
# Line 121  namespace LinuxSampler { Line 136  namespace LinuxSampler {
136          InitWithDefault(); // use default name          InitWithDefault(); // use default name
137      }      }
138    
139      AudioOutputDeviceJack::ParameterName::ParameterName(String s) throw (LinuxSamplerException) : DeviceCreationParameterString(s) {      AudioOutputDeviceJack::ParameterName::ParameterName(String s) throw (Exception) : DeviceCreationParameterString(s) {
140      }      }
141    
142      String AudioOutputDeviceJack::ParameterName::Description() {      String AudioOutputDeviceJack::ParameterName::Description() {
# Line 148  namespace LinuxSampler { Line 163  namespace LinuxSampler {
163          return (existingJackDevices) ? "LinuxSampler" + ToString(existingJackDevices) : "LinuxSampler";          return (existingJackDevices) ? "LinuxSampler" + ToString(existingJackDevices) : "LinuxSampler";
164      }      }
165    
166      void AudioOutputDeviceJack::ParameterName::OnSetValue(String s) throw (LinuxSamplerException) {      void AudioOutputDeviceJack::ParameterName::OnSetValue(String s) throw (Exception) {
167          // not possible, as parameter is fix          // not possible, as parameter is fix
168      }      }
169    
# Line 169  namespace LinuxSampler { Line 184  namespace LinuxSampler {
184       * @see AcquireChannels()       * @see AcquireChannels()
185       */       */
186      AudioOutputDeviceJack::AudioOutputDeviceJack(std::map<String,DeviceCreationParameter*> Parameters) : AudioOutputDevice(Parameters) {      AudioOutputDeviceJack::AudioOutputDeviceJack(std::map<String,DeviceCreationParameter*> Parameters) : AudioOutputDevice(Parameters) {
187          if (((DeviceCreationParameterString*)Parameters["NAME"])->ValueAsString().size() >= jack_client_name_size())          JackClient* pJackClient = JackClient::CreateAudio(((DeviceCreationParameterString*)Parameters["NAME"])->ValueAsString());
             throw LinuxSamplerException("JACK client name too long");  
   
         if ((hJackClient = jack_client_new(((DeviceCreationParameterString*)Parameters["NAME"])->ValueAsString().c_str())) == 0)  
             throw AudioOutputException("Seems Jack server not running.");  
   
188          existingJackDevices++;          existingJackDevices++;
189            pJackClient->SetAudioOutputDevice(this);
190          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.");  
   
191          uiMaxSamplesPerCycle = jack_get_buffer_size(hJackClient);          uiMaxSamplesPerCycle = jack_get_buffer_size(hJackClient);
192    
193          // create audio channels          // create audio channels
# Line 192  namespace LinuxSampler { Line 198  namespace LinuxSampler {
198      }      }
199    
200      AudioOutputDeviceJack::~AudioOutputDeviceJack() {      AudioOutputDeviceJack::~AudioOutputDeviceJack() {
201          // destroy jack client          // destroy jack client if there is no midi device associated with it
202          jack_client_close(hJackClient);          JackClient::ReleaseAudio(((DeviceCreationParameterString*)Parameters["NAME"])->ValueAsString());
203          existingJackDevices--;          existingJackDevices--;
204      }      }
205    
# Line 202  namespace LinuxSampler { Line 208  namespace LinuxSampler {
208       * libjack to demand transmission of further sample points.       * libjack to demand transmission of further sample points.
209       */       */
210      int AudioOutputDeviceJack::Process(uint Samples) {      int AudioOutputDeviceJack::Process(uint Samples) {
211            int res;
212            
213            // in recent versions of JACK2 and JACk1, we are forced to
214            // re-retrieve the audio buffer pointers in each process period
215            UpdateJackBuffers(Samples);
216            
217          if (csIsPlaying.Pop()) {          if (csIsPlaying.Pop()) {
218              // let all connected engines render 'Samples' sample points              // let all connected engines render 'Samples' sample points
219              return RenderAudio(Samples);              res = RenderAudio(Samples);
220          }          }
221          else {          else {
222              // playback stop by zeroing output buffer(s) and not calling connected sampler engines to render audio              // playback stop by zeroing output buffer(s) and not calling connected sampler engines to render audio
223              return RenderSilence(Samples);              res = RenderSilence(Samples);
224          }          }
225            csIsPlaying.RttDone();
226            return res;
227        }
228        
229        void AudioOutputDeviceJack::UpdateJackBuffers(uint size) {
230            for (int i = 0; i < Channels.size(); ++i)
231                static_cast<AudioChannelJack*>(Channels[i])->UpdateJackBuffer(size);
232        }
233        
234        float AudioOutputDeviceJack::latency() {
235            if (!hJackClient) return -1;
236            const float size = jack_get_buffer_size(hJackClient);
237            const float rate = jack_get_sample_rate(hJackClient);
238            return size / rate;
239      }      }
240    
241      void AudioOutputDeviceJack::Play() {      void AudioOutputDeviceJack::Play() {
# Line 217  namespace LinuxSampler { Line 243  namespace LinuxSampler {
243      }      }
244    
245      bool AudioOutputDeviceJack::IsPlaying() {      bool AudioOutputDeviceJack::IsPlaying() {
246          csIsPlaying.GetUnsafe();          return csIsPlaying.GetUnsafe();
247      }      }
248    
249      void AudioOutputDeviceJack::Stop() {      void AudioOutputDeviceJack::Stop() {
# Line 249  namespace LinuxSampler { Line 275  namespace LinuxSampler {
275      }      }
276    
277      String AudioOutputDeviceJack::Version() {      String AudioOutputDeviceJack::Version() {
278         String s = "$Revision: 1.17 $";         String s = "$Revision: 1.25 $";
279         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
280      }      }
281    
282    
283    
284    // *************** JackClient ***************
285    // *
286    
287      // libjack callback functions      // libjack callback functions
288    
289      int __libjack_process_callback(jack_nframes_t nframes, void* arg) {      int linuxsampler_libjack_process_callback(jack_nframes_t nframes, void* arg) {
290          AudioOutputDeviceJack* pAudioOutputDeviceJack = (AudioOutputDeviceJack*) arg;          return static_cast<JackClient*>(arg)->Process(nframes);
         return pAudioOutputDeviceJack->Process(nframes);  
291      }      }
292    
293      void __libjack_shutdown_callback(void* arg) {      void linuxsampler_libjack_shutdown_callback(void* arg) {
294          AudioOutputDeviceJack* pAudioOutputDeviceJack = (AudioOutputDeviceJack*) arg;          static_cast<JackClient*>(arg)->Stop();
         pAudioOutputDeviceJack->Stop();  
295          fprintf(stderr, "Jack: Jack server shutdown, exiting.\n");          fprintf(stderr, "Jack: Jack server shutdown, exiting.\n");
296      }      }
297        
298        int JackClient::libjackSampleRateCallback(jack_nframes_t nframes, void *arg) {
299            JackClient* client = static_cast<JackClient*>(arg);
300            const config_t& config = client->ConfigReader.Lock();
301            if (config.AudioDevice)
302                config.AudioDevice->ReconnectAll();
303            client->ConfigReader.Unlock();
304            return 0;
305        }
306        
307        int JackClient::libjackBufferSizeCallback(jack_nframes_t nframes, void *arg) {
308            dmsg(1,("libjackBufferSizeCallback(%d)\n",nframes));
309            JackClient* client = static_cast<JackClient*>(arg);
310            const config_t& config = client->ConfigReader.Lock();
311            if (config.AudioDevice) {
312                config.AudioDevice->UpdateJackBuffers(nframes);
313                config.AudioDevice->ReconnectAll();
314            }
315            client->ConfigReader.Unlock();
316            return 0;
317        }
318    
319        std::map<String, JackClient*> JackClient::Clients;
320    
321        int JackClient::Process(uint Samples) {
322            const config_t& config = ConfigReader.Lock();
323    #if HAVE_JACK_MIDI
324            if (config.MidiDevice) config.MidiDevice->Process(Samples);
325    #endif
326            int res = config.AudioDevice ? config.AudioDevice->Process(Samples) : 0;
327            ConfigReader.Unlock();
328            return res;
329        }
330    
331        void JackClient::Stop() {
332            const config_t& config = ConfigReader.Lock();
333            if (config.AudioDevice) config.AudioDevice->Stop();
334            ConfigReader.Unlock();
335        }
336    
337        JackClient::JackClient(String Name) : ConfigReader(Config) {
338            {
339                config_t& config = Config.GetConfigForUpdate();
340                config.AudioDevice = 0;
341    #if HAVE_JACK_MIDI
342                config.MidiDevice = 0;
343    #endif
344            }
345            {
346                config_t& config = Config.SwitchConfig();
347                config.AudioDevice = 0;
348    #if HAVE_JACK_MIDI
349                config.MidiDevice = 0;
350    #endif
351            }
352            audio = midi = false;
353            if (Name.size() >= jack_client_name_size())
354                throw Exception("JACK client name too long");
355    #if HAVE_JACK_CLIENT_OPEN
356            hJackClient = jack_client_open(Name.c_str(), JackNullOption, NULL);
357    #else
358            hJackClient = jack_client_new(Name.c_str());
359    #endif
360            if (!hJackClient)
361                throw Exception("Seems Jack server is not running.");
362            jack_set_process_callback(hJackClient, linuxsampler_libjack_process_callback, this);
363            jack_on_shutdown(hJackClient, linuxsampler_libjack_shutdown_callback, this);
364            jack_set_buffer_size_callback(hJackClient, libjackBufferSizeCallback, this);
365            jack_set_sample_rate_callback(hJackClient, libjackSampleRateCallback, this);
366            
367            if (jack_activate(hJackClient))
368                throw Exception("Jack: Cannot activate Jack client.");
369        }
370    
371        JackClient::~JackClient() {
372            jack_client_close(hJackClient);
373        }
374    
375        void JackClient::SetAudioOutputDevice(AudioOutputDeviceJack* device) {
376            Config.GetConfigForUpdate().AudioDevice = device;
377            Config.SwitchConfig().AudioDevice = device;
378        }
379    
380    #if HAVE_JACK_MIDI
381        void JackClient::SetMidiInputDevice(MidiInputDeviceJack* device) {
382            Config.GetConfigForUpdate().MidiDevice = device;
383            Config.SwitchConfig().MidiDevice = device;
384        }
385    #endif
386    
387        JackClient* JackClient::CreateAudio(String Name) { // static
388            JackClient* client;
389            std::map<String, JackClient*>::const_iterator it = Clients.find(Name);
390            if (it == Clients.end()) {
391                client = new JackClient(Name);
392                Clients[Name] = client;
393            } else {
394                client = it->second;
395                if (client->audio) throw Exception("Jack audio device '" + Name + "' already exists");
396            }
397            client->audio = true;
398            return client;
399        }
400    
401        JackClient* JackClient::CreateMidi(String Name) { // static
402            JackClient* client;
403            std::map<String, JackClient*>::const_iterator it = Clients.find(Name);
404            if (it == Clients.end()) {
405                client = new JackClient(Name);
406                Clients[Name] = client;
407            } else {
408                client = it->second;
409                if (client->midi) throw Exception("Jack MIDI device '" + Name + "' already exists");
410            }
411            client->midi = true;
412            return client;
413        }
414    
415        void JackClient::ReleaseAudio(String Name) { // static
416            JackClient* client = Clients[Name];
417            client->SetAudioOutputDevice(0);
418            client->audio = false;
419            if (!client->midi) {
420                Clients.erase(Name);
421                delete client;
422            }
423        }
424    
425        void JackClient::ReleaseMidi(String Name) { // static
426            JackClient* client = Clients[Name];
427    #if HAVE_JACK_MIDI
428            client->SetMidiInputDevice(0);
429    #endif
430            client->midi = false;
431            if (!client->audio) {
432                Clients.erase(Name);
433                delete client;
434            }
435        }
436    
437  } // namespace LinuxSampler  } // namespace LinuxSampler
438    
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