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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 by Benno Senoner and 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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|
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#ifndef __LS_SAMPLER_H__ |
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#define __LS_SAMPLER_H__ |
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|
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#include <vector> |
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#include <map> |
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#include "common/global.h" |
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#include "common/LinuxSamplerException.h" |
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#include "engines/common/Engine.h" |
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#include "mididriver/MidiInputDevice.h" |
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#include "audiodriver/AudioOutputDevice.h" |
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|
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namespace LinuxSampler { |
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|
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/** |
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* Which sampler engine to be used. |
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*/ |
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enum engine_type_t { |
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engine_type_gig |
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}; |
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|
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/** |
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* Which audio output system to be used. |
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*/ |
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enum audio_output_type_t { |
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audio_output_type_alsa, |
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audio_output_type_jack |
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}; |
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|
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/** |
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* Which MIDI input system to be used. |
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*/ |
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enum midi_input_type_t { |
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midi_input_type_alsa |
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}; |
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|
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// just symbol prototyping |
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class Sampler; |
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|
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/** LinuxSampler sampler channel |
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* |
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* Encapsulates one sampler engine, one connection to a MIDI input |
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* device and one connection to an audio output device. You cannot |
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* create an instance of this class on you own, you have to use the |
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* AddSamplerChannel() method of the Sampler object to create a new |
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* 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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* Deploy a sampler engine of the given type for this sampler |
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* channnel. If there was already a sampler engine deployed on |
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* this sampler channel, then the old engine will automatically |
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* be destroyed. |
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* |
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* @param EngineType - type of the engine to deploy |
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*/ |
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void LoadEngine(engine_type_t EngineType); |
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|
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/** |
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* Connect this sampler channel to an audio output device (that |
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* is audio output driver) of the given type. If the audio |
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* output for the desired audio output system is not yet |
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* created, then it will be created automatically, but with |
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* default settings though. If this sampler channel was already |
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* connected to an audio output device, then the old connection |
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* will automatically be removed before. |
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* |
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* @param AudioType - audio output system to connect to |
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*/ |
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void SetAudioOutputDevice(audio_output_type_t AudioType); |
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|
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/** |
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* Connect this sampler channel to and MIDI input device (that |
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* is MIDI input driver) of the given type. If the MIDI input |
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* driver for the desired MIDI input system is not yet created, |
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* then it will be created automatically, but with default |
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* settings though. If this sampler channel was already |
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* connected to a MIDI input device, then the old connection |
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* will automatically be removed before. |
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* |
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* @param MidiType - MIDI input system 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 SetMidiInputDevice(midi_input_type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel = MidiInputDevice::midi_chan_all); |
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|
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/** |
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* Returns the engine that was deployed on this sampler channel. |
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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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Engine* GetEngine(); |
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|
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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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/** |
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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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/** |
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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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protected: |
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SamplerChannel(Sampler* pS); |
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~SamplerChannel(); |
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|
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Sampler* pSampler; |
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Engine* pEngine; |
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MidiInputDevice* pMidiInputDevice; |
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AudioOutputDevice* pAudioOutputDevice; |
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int iIndex; |
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|
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friend class Sampler; |
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}; |
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|
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/** 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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* |
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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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* |
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* Note that not all audio and MIDI backends and sampler engines listed |
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* in the example above are already 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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* ascpect of MIDI input and audio output devices / drivers: |
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* |
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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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* |
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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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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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/** |
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* Destructor. |
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*/ |
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~Sampler(); |
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|
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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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/** |
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* Create and add a new sampler channel to this Sampler instance. |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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* Create an audio output device of the given type. |
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* |
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* @param AudioType - desired audio output system to use |
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* @returns pointer to created audio output device |
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*/ |
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AudioOutputDevice* CreateAudioOutputDevice(audio_output_type_t AudioType); |
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|
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/** |
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* Returns the audio output device of the given type. |
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* |
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* @param AudioType - desired audio output system to use |
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* @returns pointer to audio output device or NULL if device of |
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* desired type is not yet created |
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*/ |
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AudioOutputDevice* GetAudioOutputDevice(audio_output_type_t AudioType); |
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|
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/** |
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* Create a MIDI input device of the given type. |
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* |
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* @param MidiType - desired MIDI input system to use |
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* @returns pointer to created MIDI input device |
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*/ |
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MidiInputDevice* CreateMidiInputDevice(midi_input_type_t MidiType); |
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|
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/** |
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* Returns the MIDI input device of the given type. |
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* |
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* @param MidiType - desired MIDI input system to use |
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* @returns pointer to MIDI input device or NULL if device of |
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* desired type is not yet created |
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*/ |
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MidiInputDevice* GetMidiInputDevice(midi_input_type_t MidiType); |
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|
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protected: |
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typedef std::map<audio_output_type_t, AudioOutputDevice*> AudioOutputDeviceMap; |
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typedef std::map<midi_input_type_t, MidiInputDevice*> MidiInputDeviceMap; |
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|
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std::vector<SamplerChannel*> vSamplerChannels; ///< contains all created sampler channels |
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AudioOutputDeviceMap AudioOutputDevices; ///< contains all created audio output devices |
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MidiInputDeviceMap MidiInputDevices; |
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|
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friend class SamplerChannel; |
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}; |
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} |
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|
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#endif // __LS_SAMPLER_H__ |