/[svn]/linuxsampler/trunk/src/Sampler.h
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revision 900 by schoenebeck, Wed Jul 5 17:53:22 2006 UTC revision 1723 by schoenebeck, Sun Apr 20 08:53:39 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, 2006 Christian Schoenebeck                        *   *   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 26  Line 26 
26    
27  #include <vector>  #include <vector>
28  #include <map>  #include <map>
29    #include "EventListeners.h"
30  #include "common/global.h"  #include "common/global.h"
31  #include "common/Exception.h"  #include "common/Exception.h"
32  #include "engines/EngineChannel.h"  #include "engines/EngineChannel.h"
# Line 149  namespace LinuxSampler { Line 150  namespace LinuxSampler {
150               * Sampler instance.               * Sampler instance.
151               */               */
152              uint Index();              uint Index();
153                
154                /**
155                 * Registers the specified listener to be notified
156                 * when the engine type of this sampler channel is changed.
157                 */
158                void AddEngineChangeListener(EngineChangeListener* l);
159    
160                /**
161                 * Removes the specified listener.
162                 */
163                void RemoveEngineChangeListener(EngineChangeListener* l);
164    
165                /**
166                 * Removes the specified listener.
167                 */
168                void RemoveAllEngineChangeListeners();
169    
170                /**
171                 * Notifies listeners that the engine type of this sampler
172                 * channel is going to be changed soon.
173                 */
174                void fireEngineToBeChanged();
175    
176                /**
177                 * Notifies listeners that the engine
178                 * type of this sampler channel is changed.
179                 */
180                void fireEngineChanged();
181    
182    
183          protected:          protected:
184              SamplerChannel(Sampler* pS);              SamplerChannel(Sampler* pS);
# Line 167  namespace LinuxSampler { Line 197  namespace LinuxSampler {
197          private:          private:
198              int                iMidiPort;   ///< Don't access directly, read GetMidiInputPort() instead !              int                iMidiPort;   ///< Don't access directly, read GetMidiInputPort() instead !
199              midi_chan_t        midiChannel; ///< Don't access directly, read GetMidiInputChannel() instead !              midi_chan_t        midiChannel; ///< Don't access directly, read GetMidiInputChannel() instead !
200                ListenerList<EngineChangeListener*> llEngineChangeListeners;
201      };      };
202    
203      /** @brief LinuxSampler main class      /** @brief LinuxSampler main class
# Line 283  namespace LinuxSampler { Line 314  namespace LinuxSampler {
314              void RemoveSamplerChannel(uint uiSamplerChannel);              void RemoveSamplerChannel(uint uiSamplerChannel);
315    
316              /**              /**
317                 * Registers the specified listener to be notified
318                 * when the number of sampler chanels is changed.
319                 */
320                void AddChannelCountListener(ChannelCountListener* l);
321    
322                /**
323                 * Removes the specified listener.
324                 */
325                void RemoveChannelCountListener(ChannelCountListener* l);
326    
327                /**
328                 * Registers the specified listener to be notified
329                 * when the number of audio output devices is changed.
330                 */
331                void AddAudioDeviceCountListener(AudioDeviceCountListener* l);
332    
333                /**
334                 * Removes the specified listener.
335                 */
336                void RemoveAudioDeviceCountListener(AudioDeviceCountListener* l);
337    
338                
339                /**
340                 * Registers the specified listener to be notified
341                 * when the number of MIDI input devices is changed.
342                 */
343                void AddMidiDeviceCountListener(MidiDeviceCountListener* l);
344    
345                /**
346                 * Removes the specified listener.
347                 */
348                void RemoveMidiDeviceCountListener(MidiDeviceCountListener* l);
349    
350                /**
351                 * Registers the specified listener to be notified when the number
352                 * of active voices in a particular sampler channel is changed.
353                 */
354                void AddVoiceCountListener(VoiceCountListener* l);
355    
356                /**
357                 * Removes the specified listener.
358                 */
359                void RemoveVoiceCountListener(VoiceCountListener* l);
360    
361                /**
362                 * Notifies listeners that the number of active voices
363                 * on the specified sampler channel is changed.
364                 * @param ChannelId The numerical ID of the sampler channel.
365                 * @param NewCount The new number of active voices.
366                 */
367                void fireVoiceCountChanged(int ChannelId, int NewCount);
368    
369                /**
370                 * Registers the specified listener to be notified when the number
371                 * of active disk streams in a particular sampler channel is changed.
372                 */
373                void AddStreamCountListener(StreamCountListener* l);
374    
375                /**
376                 * Removes the specified listener.
377                 */
378                void RemoveStreamCountListener(StreamCountListener* l);
379    
380                /**
381                 * Notifies listeners that the number of active disk streams
382                 * on the specified sampler channel is changed.
383                 * @param ChannelId The numerical ID of the sampler channel.
384                 * @param NewCount The new number of active disk streams.
385                 */
386                void fireStreamCountChanged(int ChannelId, int NewCount);
387    
388                /**
389                 * Registers the specified listener to be
390                 * notified when the fill state of the disk stream
391                 * buffers on a specific sampler channel is changed.
392                 */
393                void AddBufferFillListener(BufferFillListener* l);
394    
395                /**
396                 * Removes the specified listener.
397                 */
398                void RemoveBufferFillListener(BufferFillListener* l);
399    
400                /**
401                 * Notifies listeners that the fill state of the disk stream
402                 * buffers on the specified sampler channel is changed.
403                 * @param ChannelId The numerical ID of the sampler channel.
404                 * @param FillData The buffer fill data for the specified sampler channel.
405                 */
406                void fireBufferFillChanged(int ChannelId, String FillData);
407    
408                /**
409                 * Registers the specified listener to be notified
410                 * when total number of active voices is changed.
411                 */
412                void AddTotalVoiceCountListener(TotalVoiceCountListener* l);
413    
414                /**
415                 * Removes the specified listener.
416                 */
417                void RemoveTotalVoiceCountListener(TotalVoiceCountListener* l);
418    
419                /**
420                 * Notifies listeners that the total number of active voices is changed.
421                 * @param NewCount The new number of active voices.
422                 */
423                void fireTotalVoiceCountChanged(int NewCount);
424                
425                void AddTotalStreamCountListener(TotalStreamCountListener* l);
426                void RemoveTotalStreamCountListener(TotalStreamCountListener* l);
427                void fireTotalStreamCountChanged(int NewCount);
428    
429                /**
430                 * Registers the specified listener to be notified when the number
431                 * of effect sends on a particular sampler channel is changed.
432                 */
433                void AddFxSendCountListener(FxSendCountListener* l);
434    
435                /**
436                 * Removes the specified listener.
437                 */
438                void RemoveFxSendCountListener(FxSendCountListener* l);
439    
440                /**
441               * Returns the names of all available audio output drivers.               * Returns the names of all available audio output drivers.
442               */               */
443              std::vector<String> AvailableAudioOutputDrivers();              std::vector<String> AvailableAudioOutputDrivers();
# Line 358  namespace LinuxSampler { Line 513  namespace LinuxSampler {
513               */               */
514              void DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception);              void DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception);
515    
516                 /**
517                 * Gets the current number of all active streams.
518                 * @returns The current number of all active streams.
519                 */
520                int GetDiskStreamCount();
521    
522              /**              /**
523               * Gets the current number of all active voices.               * Gets the current number of all active voices.
524               * @returns The current number of all active voices.               * @returns The current number of all active voices.
# Line 370  namespace LinuxSampler { Line 531  namespace LinuxSampler {
531               */               */
532              void Reset();              void Reset();
533    
534                /**
535                 * Advise the FPU to treat denormal floating point numbers as
536                 * zero, to avoid severe performance penalty when dealing with
537                 * such extreme floating point values.
538                 *
539                 * @returns @c true if FPU supports it, @c false otherwise
540                 */
541                static bool EnableDenormalsAreZeroMode();
542    
543          protected:          protected:
544                /**
545                 * Notifies listeners that the number of sampler channels has been changed.
546                 * @param NewCount The new number of sampler channels.
547                 */
548                void fireChannelCountChanged(int NewCount);
549    
550                /**
551                 * Notifies listeners that the specified sampler channel has just
552                 * been added.
553                 * @param pChannel The new sampler channel.
554                 */
555                void fireChannelAdded(SamplerChannel* pChannel);
556    
557                /**
558                 * Notifies listeners that the specified sampler channel is
559                 * going to be removed soon.
560                 * @param pChannel sampler channel to be removed.
561                 */
562                void fireChannelToBeRemoved(SamplerChannel* pChannel);
563    
564                /**
565                 * Notifies listeners that the number of audio output devices has been changed.
566                 * @param NewCount The new number of audio output devices.
567                 */
568                void fireAudioDeviceCountChanged(int NewCount);
569    
570                /**
571                 * Notifies listeners that the number of MIDI input devices has been changed.
572                 * @param NewCount The new number of MIDI input devices.
573                 */
574                void fireMidiDeviceCountChanged(int NewCount);
575    
576                /**
577                 * Notifies listeners that the supplied MIDI input device is
578                 * going to be destroyed soon.
579                 * @param pDevice MIDI input device to be destroyed
580                 */
581                void fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice);
582    
583                /**
584                 * Notifies listeners that the supplied MIDI input device was
585                 * just created.
586                 * @param pDevice new MIDI input device
587                 */
588                void fireMidiDeviceCreated(MidiInputDevice* pDevice);
589    
590                /**
591                 * Notifies listeners that the number of effect sends
592                 * on a particular sampler channel is changed.
593                 * @param ChannelId The numerical ID of the sampler channel.
594                 * @param NewCount The new number of sampler channels.
595                 */
596                void fireFxSendCountChanged(int ChannelId, int NewCount);
597    
598              typedef std::map<uint, AudioOutputDevice*> AudioOutputDeviceMap;              typedef std::map<uint, AudioOutputDevice*> AudioOutputDeviceMap;
599              typedef std::map<uint, MidiInputDevice*> MidiInputDeviceMap;              typedef std::map<uint, MidiInputDevice*> MidiInputDeviceMap;
600              typedef std::map<uint, SamplerChannel*> SamplerChannelMap;              typedef std::map<uint, SamplerChannel*> SamplerChannelMap;
# Line 380  namespace LinuxSampler { Line 604  namespace LinuxSampler {
604              MidiInputDeviceMap    mMidiInputDevices;   ///< contains all created MIDI input devices              MidiInputDeviceMap    mMidiInputDevices;   ///< contains all created MIDI input devices
605    
606              friend class SamplerChannel;              friend class SamplerChannel;
607    
608            private:
609                ListenerList<ChannelCountListener*> llChannelCountListeners;
610                ListenerList<AudioDeviceCountListener*> llAudioDeviceCountListeners;
611                ListenerList<MidiDeviceCountListener*> llMidiDeviceCountListeners;
612                ListenerList<VoiceCountListener*> llVoiceCountListeners;
613                ListenerList<StreamCountListener*> llStreamCountListeners;
614                ListenerList<BufferFillListener*> llBufferFillListeners;
615                ListenerList<TotalStreamCountListener*> llTotalStreamCountListeners;
616                ListenerList<TotalVoiceCountListener*> llTotalVoiceCountListeners;
617                ListenerList<FxSendCountListener*> llFxSendCountListeners;
618    
619                class EventHandler : public EngineChangeListener, public FxSendCountListener {
620                    public:
621                        void SetSampler(Sampler* pSampler) { this->pSampler = pSampler; }
622    
623                        /**
624                         * Invoked when the engine type of the specified sampler
625                         * channel is going to be changed soon.
626                         * @param ChannelId The numerical ID of the sampler channel
627                         */
628                        virtual void EngineToBeChanged(int ChannelId);
629    
630                        /**
631                         * Invoked when the engine type of the
632                         * specified sampler channel is changed.
633                         * @param ChannelId The numerical ID of the sampler
634                         * channel, which engine type has been changed.
635                         */
636                        virtual void EngineChanged(int ChannelId);
637    
638                        /**
639                         * Invoked when the number of effect sends
640                         * on the specified sampler channel has changed.
641                         * @param ChannelId The numerical ID of the sampler channel.
642                         * @param NewCount The new number of effect sends.
643                         */
644                        virtual void FxSendCountChanged(int ChannelId, int NewCount);
645    
646                    private:
647                        Sampler* pSampler;
648                } eventHandler;
649      };      };
650  }  }
651    
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