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* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
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* * |
* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 - 2008 Christian Schoenebeck * |
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* * |
* * |
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* This program is free software; you can redistribute it and/or modify * |
* 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 * |
* it under the terms of the GNU General Public License as published by * |
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#define __LS_EVENT_H__ |
#define __LS_EVENT_H__ |
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#include "../../common/global.h" |
#include "../../common/global.h" |
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#include "../../common/RTMath.h" |
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#include "../EngineChannel.h" |
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namespace LinuxSampler { |
namespace LinuxSampler { |
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EventGenerator(uint SampleRate); |
EventGenerator(uint SampleRate); |
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void UpdateFragmentTime(uint SamplesToProcess); |
void UpdateFragmentTime(uint SamplesToProcess); |
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Event CreateEvent(); |
Event CreateEvent(); |
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Event CreateEvent(int32_t FragmentPos); |
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protected: |
protected: |
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typedef uint32_t time_stamp_t; ///< We read the processor's cycle count register as a reference for the real time. These are of course only abstract values with arbitrary time entity, but that's not a problem as we calculate relatively. |
typedef RTMath::time_stamp_t time_stamp_t; |
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inline int32_t ToFragmentPos(time_stamp_t TimeStamp) { |
inline int32_t ToFragmentPos(time_stamp_t TimeStamp) { |
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return int32_t (int32_t(TimeStamp - FragmentTime.begin) * FragmentTime.sample_ratio); |
return int32_t (int32_t(TimeStamp - FragmentTime.begin) * FragmentTime.sample_ratio); |
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} |
} |
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time_stamp_t end; ///< Real time stamp of the end of this audio fragment cycle. |
time_stamp_t end; ///< Real time stamp of the end of this audio fragment cycle. |
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float sample_ratio; ///< (Samples per cycle) / (Real time duration of cycle) |
float sample_ratio; ///< (Samples per cycle) / (Real time duration of cycle) |
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} FragmentTime; |
} FragmentTime; |
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time_stamp_t CreateTimeStamp(); |
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}; |
}; |
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/** |
/** |
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* Events are usually caused by a MIDI source or an internal modulation |
* Events are usually caused by a MIDI source or an internal modulation |
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* controller like LFO or EG. An event can only be created by an |
* controller like LFO or EG. An event should only be created by an |
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* EventGenerator. |
* EventGenerator! |
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* |
* |
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* @see EventGenerator |
* @see EventGenerator |
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*/ |
*/ |
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type_cancel_release, ///< transformed either from a note-on or sustain-pedal-down event |
type_cancel_release, ///< transformed either from a note-on or sustain-pedal-down event |
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type_release ///< transformed either from a note-off or sustain-pedal-up event |
type_release ///< transformed either from a note-off or sustain-pedal-up event |
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} Type; |
} Type; |
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enum destination_t { |
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destination_vca, ///< Volume level |
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destination_vco, ///< Pitch depth |
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destination_vcfc, ///< Filter curoff frequency |
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destination_vcfr, ///< Filter resonance |
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destination_count ///< Total number of modulation destinations (this has to stay the last element in the enum) |
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}; |
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union { |
union { |
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/// Note-on and note-off event specifics |
/// Note-on and note-off event specifics |
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struct _Note { |
struct _Note { |
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uint Size; ///< Data length (in bytes) of MIDI system exclusive message. |
uint Size; ///< Data length (in bytes) of MIDI system exclusive message. |
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} Sysex; |
} Sysex; |
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} Param; |
} Param; |
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EngineChannel* pEngineChannel; ///< Pointer to the EngineChannel where this event occured on, NULL means Engine global event (e.g. SysEx message). |
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MidiInputPort* pMidiInputPort; ///< Pointer to the MIDI input port on which this event occured (NOTE: currently only for global events, that is SysEx messages) |
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inline int32_t FragmentPos() { |
inline int32_t FragmentPos() { |
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if (iFragmentPos >= 0) return iFragmentPos; |
if (iFragmentPos >= 0) return iFragmentPos; |
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protected: |
protected: |
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typedef EventGenerator::time_stamp_t time_stamp_t; |
typedef EventGenerator::time_stamp_t time_stamp_t; |
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Event(EventGenerator* pGenerator, EventGenerator::time_stamp_t Time); |
Event(EventGenerator* pGenerator, EventGenerator::time_stamp_t Time); |
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Event(EventGenerator* pGenerator, int32_t FragmentPos); |
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friend class EventGenerator; |
friend class EventGenerator; |
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private: |
private: |
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EventGenerator* pEventGenerator; ///< Creator of the event. |
EventGenerator* pEventGenerator; ///< Creator of the event. |