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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005, 2006 Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#ifndef __LS_SAMPLER_H__ |
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#define __LS_SAMPLER_H__ |
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#include <vector> |
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#include <map> |
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#include "EventListeners.h" |
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#include "common/global.h" |
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#include "common/Exception.h" |
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#include "engines/EngineChannel.h" |
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#include "drivers/midi/MidiInputDevice.h" |
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#include "drivers/audio/AudioOutputDevice.h" |
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namespace LinuxSampler { |
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// just symbol prototyping |
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class Sampler; |
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/** @brief LinuxSampler sampler channel |
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* |
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* Encapsulates a channel of a specific sampler engine type, one |
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* connection to a MIDI input device and one connection to an audio |
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* output device. You cannot create an instance of this class on your |
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* own, you have to use the AddSamplerChannel() method of the Sampler |
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* object to create a new sampler channel. |
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*/ |
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class SamplerChannel { |
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public: |
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/** |
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* Assign a sampler engine type to this sampler channel. |
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* |
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* @param EngineType - type of the engine to use |
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* @throws Exception - if \a EngineType is invalid |
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* @see Sampler::AvailableEngineTypes() |
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*/ |
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void SetEngineType(String EngineType) throw (Exception); |
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/** |
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* Connect this sampler channel to an audio output device, that |
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* is an instance of an audio output driver. If this sampler |
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* channel was already connected to an audio output device, then |
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* the old connection will automatically be removed before. |
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* |
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* @param pDevice - audio output device to connect to |
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*/ |
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void SetAudioOutputDevice(AudioOutputDevice* pDevice); |
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/** |
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* Connect this sampler channel to a MIDI input device. |
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* |
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* @param pDevice - MIDI input device to connect to |
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*/ |
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void SetMidiInputDevice(MidiInputDevice *pDevice); |
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/** |
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* Connect this sampler channel to a MIDI input port. |
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* |
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* @param MidiPort - MIDI port to connect to |
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*/ |
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void SetMidiInputPort(int MidiPort); |
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/** |
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* Define on which MIDI channel(s) this sampler channel should |
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* listen to. By default, that is after creation of a new |
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* sampler channel, the sampler channel will listen to all MIDI |
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* channels. |
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* |
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* @param MidiChannel - MIDI channel to listen |
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*/ |
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void SetMidiInputChannel(midi_chan_t MidiChannel); |
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/** |
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* Connect this sampler channel to a MIDI input triplet. |
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* |
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* @param pDevice - MIDI input device to connect to |
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* @param iMidiPort - MIDI port to connect to |
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* @param MidiChannel - optional: MIDI channel on which the |
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* sampler channel should listen to |
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* (default: listen on all MIDI channels) |
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*/ |
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void SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel = midi_chan_all); |
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/** |
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* Returns the EngineChannel object that was deployed on this |
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* sampler channel appropriate to the given sampler engine type. |
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* |
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* @returns pointer to engine or NULL if no engine deployed |
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*/ |
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EngineChannel* GetEngineChannel(); |
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/** |
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* Returns the MIDI input channel to which this sampler |
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* channel is currently connected to. |
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* |
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* @returns The MIDI input channel on which the sampler |
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* channel is listening to. |
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*/ |
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midi_chan_t GetMidiInputChannel(); |
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/** |
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* Returns the MIDI input port number to which this sampler |
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* channel is currently connected to. |
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* |
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* @returns MIDI input port number or -1 if not connected |
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*/ |
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int GetMidiInputPort(); |
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/** |
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* Returns the audio output device to which this sampler channel |
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* is currently connected to. |
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* |
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* @returns pointer to audio output device or NULL if not |
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* connected |
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*/ |
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AudioOutputDevice* GetAudioOutputDevice(); |
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/** |
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* Returns the MIDI input device to which this sampler channel |
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* is currently connected to. |
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* |
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* @returns pointer to MIDI input device or NULL if not |
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* connected |
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*/ |
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MidiInputDevice* GetMidiInputDevice(); |
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/** |
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* Returns the index number of this sampler channel within the |
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* Sampler instance. |
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*/ |
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uint Index(); |
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/** |
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* Registers the specified listener to be notified |
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* when the engine type of this sampler channel is changed. |
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*/ |
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void AddEngineChangeListener(EngineChangeListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveEngineChangeListener(EngineChangeListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveAllEngineChangeListeners(); |
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/** |
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* Notifies listeners that the engine |
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* type of this sampler channel is changed. |
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*/ |
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void fireEngineChanged(); |
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protected: |
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SamplerChannel(Sampler* pS); |
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virtual ~SamplerChannel(); |
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/** Getting MIDI input device port given its index number. */ |
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MidiInputPort* __GetMidiInputDevicePort(int iMidiPort); |
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Sampler* pSampler; |
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EngineChannel* pEngineChannel; |
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AudioOutputDevice* pAudioOutputDevice; |
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MidiInputDevice* pMidiInputDevice; |
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int iIndex; |
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friend class Sampler; |
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private: |
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int iMidiPort; ///< Don't access directly, read GetMidiInputPort() instead ! |
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midi_chan_t midiChannel; ///< Don't access directly, read GetMidiInputChannel() instead ! |
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ListenerList<EngineChangeListener*> llEngineChangeListeners; |
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}; |
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/** @brief LinuxSampler main class |
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* |
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* This is the toplevel class for a LinuxSampler instance. |
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* |
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* LinuxSampler can have arbitrary numbers of sampler channels. Each |
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* sampler channel can individually be deployed with it's own sampler |
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* engine, connected to an arbitrary MIDI input device and connected to |
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* an arbitrary audio output device. Here an example setup: |
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* @code |
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* S.Channel MIDI in S.Engine Audio out |
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* ------------------------------------------------------------------- |
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* 0 Alsa -> gig::Engine -> Jack |
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* 1 VSTi -> Akai::Engine -> VSTi |
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* 2 Jack -> DLS::Engine -> Jack |
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* 3 Jack -> SF::Engine -> Alsa |
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* |
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* ... (and so on) ... |
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* @endcode |
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* |
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* Note that not all audio and MIDI backends and sampler engines listed |
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* in the example above might already been implemented! |
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* |
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* As you can see in the example setup, LinuxSampler is capable to use |
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* several, different audio output and MIDI input systems |
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* simultaniously at the same time. Here the example setup shown in the |
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* aspect of MIDI input and audio output devices / drivers: |
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* @code |
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* ######################### ######################### |
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* # AudioOutputDeviceJack # # AudioOutputDeviceVSTi # |
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* ######################### ######################### |
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* ^ ^ ^ |
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* /------------>|Sampler Channel 0|-----/ | | |
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* | /--------->|Sampler Channel 1|---------------------/ |
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* | | /------>|Sampler Channel 2|---------/ |
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* | | | /--->|Sampler Channel 3|------------>######################### |
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* | | | | ... (and so on) ... # AudioOutputDeviceAlsa # |
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* | | | | ######################### |
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* | | | \-----------------------------------------------------\ |
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* | | \--------------------------------------------\ | |
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* | \--------------------\ | | |
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* | | | | |
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* ####################### ####################### ####################### |
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* # MidiInputDeviceAlsa # # MidiInputDeviceVSTi # # MidiInputDeviceJack # |
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* ####################### ####################### ####################### |
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* @endcode |
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* |
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* As you can see in this example setup, one device (that is midi input |
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* driver / audio output driver) can be connected multiple times to |
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* different sampler channels. |
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* |
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* It's even possible to create multiple instances of the same driver, for |
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* example multiple instances of the Alsa output driver to use multiple |
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* sound cards at the same time, or multiple instances of the JACK audio |
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* output driver to leverage SMP systems or boxes with several hard discs. |
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*/ |
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class Sampler { |
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public: |
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/** |
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* Constructor. Create a LinuxSampler instance. |
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*/ |
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Sampler(); |
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/** |
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* Destructor. |
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*/ |
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virtual ~Sampler(); |
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/** |
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* Returns the number of sampler channels currently allocated. |
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*/ |
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uint SamplerChannels(); |
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/** |
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* Create and add a new sampler channel to this Sampler |
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* instance. For race condition reasons the new channel will use |
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* an index past the last already existing sampler channel |
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* index (in case the index limit was not reached yet, otherwise |
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* a free index starting from 0 is searched). |
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* |
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* @returns pointer to new sampler channel |
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*/ |
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SamplerChannel* AddSamplerChannel(); |
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/** |
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* Returns the sampler channel of the given sampler channel |
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* index. |
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* |
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* @returns pointer to sought sampler channel |
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*/ |
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SamplerChannel* GetSamplerChannel(uint uiSamplerChannel); |
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/** |
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* Returns all created sampler channels. |
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*/ |
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std::map<uint, SamplerChannel*> GetSamplerChannels(); |
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/** |
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* Destroy and remove the given sampler channel from this |
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* Sampler instance. |
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* |
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* @param pSamplerChannel - pointer to sampler channel to remove |
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*/ |
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void RemoveSamplerChannel(SamplerChannel* pSamplerChannel); |
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/** |
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* Destroy and remove the given sampler channel from this |
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* Sampler instance. |
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* |
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* @param uiSamplerChannel - index of the sampler channel to |
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* remove |
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*/ |
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void RemoveSamplerChannel(uint uiSamplerChannel); |
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/** |
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* Registers the specified listener to be notified |
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* when the number of sampler chanels is changed. |
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*/ |
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void AddChannelCountListener(ChannelCountListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveChannelCountListener(ChannelCountListener* l); |
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/** |
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* Registers the specified listener to be notified |
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* when the number of audio output devices is changed. |
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*/ |
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void AddAudioDeviceCountListener(AudioDeviceCountListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveAudioDeviceCountListener(AudioDeviceCountListener* l); |
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/** |
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* Registers the specified listener to be notified |
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* when the number of MIDI input devices is changed. |
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*/ |
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void AddMidiDeviceCountListener(MidiDeviceCountListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveMidiDeviceCountListener(MidiDeviceCountListener* l); |
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/** |
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* Registers the specified listener to be notified when the number |
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* of active voices in a particular sampler channel is changed. |
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*/ |
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void AddVoiceCountListener(VoiceCountListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveVoiceCountListener(VoiceCountListener* l); |
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/** |
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* Notifies listeners that the number of active voices |
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* on the specified sampler channel is changed. |
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* @param ChannelId The numerical ID of the sampler channel. |
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* @param NewCount The new number of active voices. |
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*/ |
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void fireVoiceCountChanged(int ChannelId, int NewCount); |
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/** |
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* Registers the specified listener to be notified when the number |
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* of active disk streams in a particular sampler channel is changed. |
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*/ |
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void AddStreamCountListener(StreamCountListener* l); |
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/** |
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* Removes the specified listener. |
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*/ |
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void RemoveStreamCountListener(StreamCountListener* l); |
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/** |
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* Notifies listeners that the number of active disk streams |
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* on the specified sampler channel is changed. |
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* @param ChannelId The numerical ID of the sampler channel. |
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* @param NewCount The new number of active disk streams. |
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*/ |
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void fireStreamCountChanged(int ChannelId, int NewCount); |
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/** |
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* Registers the specified listener to be |
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* notified when the fill state of the disk stream |
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* buffers on a specific sampler channel is changed. |
386 |
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|
*/ |
387 |
|
|
void AddBufferFillListener(BufferFillListener* l); |
388 |
|
|
|
389 |
|
|
/** |
390 |
|
|
* Removes the specified listener. |
391 |
|
|
*/ |
392 |
|
|
void RemoveBufferFillListener(BufferFillListener* l); |
393 |
|
|
|
394 |
|
|
/** |
395 |
|
|
* Notifies listeners that the fill state of the disk stream |
396 |
|
|
* buffers on the specified sampler channel is changed. |
397 |
|
|
* @param ChannelId The numerical ID of the sampler channel. |
398 |
|
|
* @param FillData The buffer fill data for the specified sampler channel. |
399 |
|
|
*/ |
400 |
|
|
void fireBufferFillChanged(int ChannelId, String FillData); |
401 |
|
|
|
402 |
|
|
/** |
403 |
|
|
* Registers the specified listener to be notified |
404 |
|
|
* when total number of active voices is changed. |
405 |
|
|
*/ |
406 |
|
|
void AddTotalVoiceCountListener(TotalVoiceCountListener* l); |
407 |
|
|
|
408 |
|
|
/** |
409 |
|
|
* Removes the specified listener. |
410 |
|
|
*/ |
411 |
|
|
void RemoveTotalVoiceCountListener(TotalVoiceCountListener* l); |
412 |
|
|
|
413 |
|
|
/** |
414 |
|
|
* Notifies listeners that the total number of active voices is changed. |
415 |
|
|
* @param NewCount The new number of active voices. |
416 |
|
|
*/ |
417 |
|
|
void fireTotalVoiceCountChanged(int NewCount); |
418 |
|
|
|
419 |
|
|
/** |
420 |
|
|
* Registers the specified listener to be notified when the number |
421 |
|
|
* of effect sends on a particular sampler channel is changed. |
422 |
|
|
*/ |
423 |
|
|
void AddFxSendCountListener(FxSendCountListener* l); |
424 |
|
|
|
425 |
|
|
/** |
426 |
|
|
* Removes the specified listener. |
427 |
|
|
*/ |
428 |
|
|
void RemoveFxSendCountListener(FxSendCountListener* l); |
429 |
|
|
|
430 |
|
|
/** |
431 |
schoenebeck |
209 |
* Returns the names of all available audio output drivers. |
432 |
|
|
*/ |
433 |
schoenebeck |
123 |
std::vector<String> AvailableAudioOutputDrivers(); |
434 |
|
|
|
435 |
schoenebeck |
57 |
/** |
436 |
schoenebeck |
900 |
* Returns the names of all available MIDI input drivers. |
437 |
|
|
*/ |
438 |
|
|
std::vector<String> AvailableMidiInputDrivers(); |
439 |
|
|
|
440 |
|
|
/** |
441 |
|
|
* Returns the names of all available sampler engine types. |
442 |
|
|
* @see SamplerChannel::SetEngineType() |
443 |
|
|
*/ |
444 |
|
|
std::vector<String> AvailableEngineTypes(); |
445 |
|
|
|
446 |
|
|
/** |
447 |
senkov |
155 |
* Create an audio output device. |
448 |
schoenebeck |
57 |
* |
449 |
schoenebeck |
123 |
* @param AudioDriver - name of the audio driver |
450 |
|
|
* @param Parameters - eventually needed driver parameters to |
451 |
|
|
* create the device |
452 |
schoenebeck |
57 |
* @returns pointer to created audio output device |
453 |
schoenebeck |
880 |
* @throws Exception if device could not be created |
454 |
schoenebeck |
57 |
*/ |
455 |
schoenebeck |
880 |
AudioOutputDevice* CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception); |
456 |
schoenebeck |
57 |
|
457 |
senkov |
155 |
/** |
458 |
|
|
* Create a midi input device. |
459 |
|
|
* |
460 |
|
|
* @param MidiDriver - name of the midi driver |
461 |
|
|
* @param Parameters - eventually needed driver parameters to |
462 |
|
|
* create the device |
463 |
|
|
* @returns pointer to created midi input device |
464 |
schoenebeck |
880 |
* @throws Exception if device could not be created |
465 |
senkov |
155 |
*/ |
466 |
schoenebeck |
880 |
MidiInputDevice* CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception); |
467 |
senkov |
155 |
|
468 |
schoenebeck |
209 |
/** |
469 |
|
|
* Returns the number of all created audio output devices. |
470 |
|
|
*/ |
471 |
schoenebeck |
123 |
uint AudioOutputDevices(); |
472 |
schoenebeck |
209 |
|
473 |
|
|
/** |
474 |
|
|
* Returns the number of all created MIDI input devices. |
475 |
|
|
*/ |
476 |
senkov |
155 |
uint MidiInputDevices(); |
477 |
schoenebeck |
57 |
|
478 |
schoenebeck |
209 |
/** |
479 |
|
|
* Returns all created audio output devices. |
480 |
|
|
*/ |
481 |
schoenebeck |
123 |
std::map<uint, AudioOutputDevice*> GetAudioOutputDevices(); |
482 |
|
|
|
483 |
schoenebeck |
209 |
/** |
484 |
|
|
* Returns all created MIDI input devices. |
485 |
|
|
*/ |
486 |
senkov |
155 |
std::map<uint, MidiInputDevice*> GetMidiInputDevices(); |
487 |
|
|
|
488 |
schoenebeck |
209 |
/** |
489 |
|
|
* Destroy the given audio output device and takes care if there |
490 |
|
|
* are still sampler angines connected to this device, etc. |
491 |
|
|
* |
492 |
schoenebeck |
880 |
* @throws Exception if sampler channels are still |
493 |
|
|
* connected to the device |
494 |
schoenebeck |
209 |
*/ |
495 |
schoenebeck |
880 |
void DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception); |
496 |
schoenebeck |
123 |
|
497 |
schoenebeck |
209 |
/** |
498 |
|
|
* Destroy the given MIDI input device and takes care if there |
499 |
|
|
* are still sampler angines connected to this device, etc. |
500 |
|
|
* |
501 |
schoenebeck |
880 |
* @throws Exception if sampler channels are still |
502 |
|
|
* connected to the device |
503 |
schoenebeck |
209 |
*/ |
504 |
schoenebeck |
880 |
void DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception); |
505 |
schoenebeck |
209 |
|
506 |
schoenebeck |
212 |
/** |
507 |
iliev |
778 |
* Gets the current number of all active voices. |
508 |
|
|
* @returns The current number of all active voices. |
509 |
|
|
*/ |
510 |
|
|
int GetVoiceCount(); |
511 |
|
|
|
512 |
|
|
/** |
513 |
schoenebeck |
212 |
* Reset the whole sampler. Destroy all engines, sampler |
514 |
|
|
* channels, MIDI input devices and audio output devices. |
515 |
|
|
*/ |
516 |
|
|
void Reset(); |
517 |
|
|
|
518 |
schoenebeck |
53 |
protected: |
519 |
iliev |
1130 |
/** |
520 |
|
|
* Notifies listeners that the number of sampler channels has been changed. |
521 |
|
|
* @param NewCount The new number of sampler channels. |
522 |
|
|
*/ |
523 |
|
|
void fireChannelCountChanged(int NewCount); |
524 |
|
|
|
525 |
|
|
/** |
526 |
|
|
* Notifies listeners that the number of audio output devices has been changed. |
527 |
|
|
* @param NewCount The new number of audio output devices. |
528 |
|
|
*/ |
529 |
|
|
void fireAudioDeviceCountChanged(int NewCount); |
530 |
|
|
|
531 |
|
|
/** |
532 |
|
|
* Notifies listeners that the number of MIDI input devices has been changed. |
533 |
|
|
* @param NewCount The new number of MIDI input devices. |
534 |
|
|
*/ |
535 |
|
|
void fireMidiDeviceCountChanged(int NewCount); |
536 |
|
|
|
537 |
|
|
/** |
538 |
|
|
* Notifies listeners that the number of effect sends |
539 |
|
|
* on a particular sampler channel is changed. |
540 |
|
|
* @param ChannelId The numerical ID of the sampler channel. |
541 |
|
|
* @param NewCount The new number of sampler channels. |
542 |
|
|
*/ |
543 |
|
|
void fireFxSendCountChanged(int ChannelId, int NewCount); |
544 |
|
|
|
545 |
schoenebeck |
123 |
typedef std::map<uint, AudioOutputDevice*> AudioOutputDeviceMap; |
546 |
senkov |
155 |
typedef std::map<uint, MidiInputDevice*> MidiInputDeviceMap; |
547 |
schoenebeck |
209 |
typedef std::map<uint, SamplerChannel*> SamplerChannelMap; |
548 |
schoenebeck |
53 |
|
549 |
schoenebeck |
209 |
SamplerChannelMap mSamplerChannels; ///< contains all created sampler channels |
550 |
|
|
AudioOutputDeviceMap mAudioOutputDevices; ///< contains all created audio output devices |
551 |
|
|
MidiInputDeviceMap mMidiInputDevices; ///< contains all created MIDI input devices |
552 |
schoenebeck |
53 |
|
553 |
|
|
friend class SamplerChannel; |
554 |
iliev |
1130 |
|
555 |
|
|
private: |
556 |
|
|
ListenerList<ChannelCountListener*> llChannelCountListeners; |
557 |
|
|
ListenerList<AudioDeviceCountListener*> llAudioDeviceCountListeners; |
558 |
|
|
ListenerList<MidiDeviceCountListener*> llMidiDeviceCountListeners; |
559 |
|
|
ListenerList<VoiceCountListener*> llVoiceCountListeners; |
560 |
|
|
ListenerList<StreamCountListener*> llStreamCountListeners; |
561 |
|
|
ListenerList<BufferFillListener*> llBufferFillListeners; |
562 |
|
|
ListenerList<TotalVoiceCountListener*> llTotalVoiceCountListeners; |
563 |
|
|
ListenerList<FxSendCountListener*> llFxSendCountListeners; |
564 |
|
|
|
565 |
|
|
class EventHandler : public EngineChangeListener, public FxSendCountListener { |
566 |
|
|
public: |
567 |
|
|
void SetSampler(Sampler* pSampler) { this->pSampler = pSampler; } |
568 |
|
|
|
569 |
|
|
/** |
570 |
|
|
* Invoked when the engine type of the |
571 |
|
|
* specified sampler channel is changed. |
572 |
|
|
* @param ChannelId The numerical ID of the sampler |
573 |
|
|
* channel, which engine type has been changed. |
574 |
|
|
*/ |
575 |
|
|
virtual void EngineChanged(int ChannelId); |
576 |
|
|
|
577 |
|
|
/** |
578 |
|
|
* Invoked when the number of effect sends |
579 |
|
|
* on the specified sampler channel has changed. |
580 |
|
|
* @param ChannelId The numerical ID of the sampler channel. |
581 |
|
|
* @param NewCount The new number of effect sends. |
582 |
|
|
*/ |
583 |
|
|
virtual void FxSendCountChanged(int ChannelId, int NewCount); |
584 |
|
|
|
585 |
|
|
private: |
586 |
|
|
Sampler* pSampler; |
587 |
|
|
} eventHandler; |
588 |
schoenebeck |
53 |
}; |
589 |
|
|
} |
590 |
|
|
|
591 |
|
|
#endif // __LS_SAMPLER_H__ |