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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 Christian Schoenebeck * |
* 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 * |
* 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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#include <gig.h> |
#include <gig.h> |
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#include "../../common/RTMath.h" |
#include "../../common/RTMath.h" |
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#include "../../common/RingBuffer.h" |
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#include "../../common/Pool.h" |
#include "../../common/Pool.h" |
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#include "../../drivers/audio/AudioOutputDevice.h" |
#include "../../drivers/audio/AudioOutputDevice.h" |
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#include "../common/BiquadFilter.h" |
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#include "Engine.h" |
#include "Engine.h" |
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#include "EngineChannel.h" |
#include "EngineChannel.h" |
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#include "Stream.h" |
#include "Stream.h" |
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#include "EGDecay.h" |
#include "EGDecay.h" |
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#include "Filter.h" |
#include "Filter.h" |
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#include "../common/LFOBase.h" |
#include "../common/LFOBase.h" |
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#include "SynthesisParam.h" |
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#include "SmoothVolume.h" |
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// include the appropriate (unsigned) triangle LFO implementation |
// include the appropriate (unsigned) triangle LFO implementation |
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#if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION |
#if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION |
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type_release_trigger_required, ///< If the key of this voice will be released, it causes a release triggered voice to be spawned |
type_release_trigger_required, ///< If the key of this voice will be released, it causes a release triggered voice to be spawned |
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type_release_trigger ///< Release triggered voice which cannot be killed by releasing its key |
type_release_trigger ///< Release triggered voice which cannot be killed by releasing its key |
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}; |
}; |
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// Attributes |
// Attributes |
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type_t Type; ///< Voice Type |
type_t Type; ///< Voice Type |
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int MIDIKey; ///< MIDI key number of the key that triggered the voice |
int MIDIKey; ///< MIDI key number of the key that triggered the voice |
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int Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup); |
int Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup); |
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inline bool IsActive() { return PlaybackState; } |
inline bool IsActive() { return PlaybackState; } |
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inline bool IsStealable() { return !itKillEvent && PlaybackState >= playback_state_ram; } |
inline bool IsStealable() { return !itKillEvent && PlaybackState >= playback_state_ram; } |
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void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent); |
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//private: |
//private: |
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// Types |
// Types |
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enum playback_state_t { |
enum playback_state_t { |
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// Attributes |
// Attributes |
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EngineChannel* pEngineChannel; |
EngineChannel* pEngineChannel; |
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Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists. |
Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists. |
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float Volume; ///< Volume level of the voice |
float VolumeLeft; ///< Left channel volume. This factor is calculated when the voice is triggered and doesn't change after that. |
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float PanLeft; |
float VolumeRight; ///< Right channel volume. This factor is calculated when the voice is triggered and doesn't change after that. |
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float PanRight; |
SmoothVolume CrossfadeSmoother; ///< Crossfade volume, updated by crossfade CC events |
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float CrossfadeVolume; ///< Current attenuation level caused by a crossfade (only if a crossfade is defined of course) |
SmoothVolume VolumeSmoother; ///< Volume, updated by CC 7 (volume) events |
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SmoothVolume PanLeftSmoother; ///< Left channel volume, updated by CC 10 (pan) events |
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SmoothVolume PanRightSmoother; ///< Right channel volume, updated by CC 10 (pan) events |
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double Pos; ///< Current playback position in sample |
double Pos; ///< Current playback position in sample |
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float PitchBase; ///< Basic pitch depth, stays the same for the whole life time of the voice |
float PitchBase; ///< Basic pitch depth, stays the same for the whole life time of the voice |
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float PitchBend; ///< Current pitch value of the pitchbend wheel |
float PitchBend; ///< Current pitch value of the pitchbend wheel |
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float CutoffBase; ///< Cutoff frequency before control change, EG and LFO are applied |
float CutoffBase; ///< Cutoff frequency before control change, EG and LFO are applied |
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::gig::Sample* pSample; ///< Pointer to the sample to be played back |
::gig::Sample* pSample; ///< Pointer to the sample to be played back |
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::gig::DimensionRegion* pDimRgn; ///< Pointer to the articulation information of current dimension region of this voice |
::gig::DimensionRegion* pDimRgn; ///< Pointer to the articulation information of current dimension region of this voice |
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bool Orphan; ///< true if this voice is playing a sample from an instrument that is unloaded. When the voice dies, the sample (and dimension region) will be handed back to the instrument resource manager. |
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playback_state_t PlaybackState; ///< When a sample will be triggered, it will be first played from RAM cache and after a couple of sample points it will switch to disk streaming and at the end of a disk stream we have to add null samples, so the interpolator can do it's work correctly |
playback_state_t PlaybackState; ///< When a sample will be triggered, it will be first played from RAM cache and after a couple of sample points it will switch to disk streaming and at the end of a disk stream we have to add null samples, so the interpolator can do it's work correctly |
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bool DiskVoice; ///< If the sample is very short it completely fits into the RAM cache and doesn't need to be streamed from disk, in that case this flag is set to false |
bool DiskVoice; ///< If the sample is very short it completely fits into the RAM cache and doesn't need to be streamed from disk, in that case this flag is set to false |
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Stream::reference_t DiskStreamRef; ///< Reference / link to the disk stream |
Stream::reference_t DiskStreamRef; ///< Reference / link to the disk stream |
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int RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator |
int RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator |
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unsigned long MaxRAMPos; ///< The upper allowed limit (not actually the end) in the RAM sample cache, after that point it's not safe to chase the interpolator another time over over the current cache position, instead we switch to disk then. |
unsigned long MaxRAMPos; ///< The upper allowed limit (not actually the end) in the RAM sample cache, after that point it's not safe to chase the interpolator another time over over the current cache position, instead we switch to disk then. |
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bool RAMLoop; ///< If this voice has a loop defined which completely fits into the cached RAM part of the sample, in this case we handle the looping within the voice class, else if the loop is located in the disk stream part, we let the disk stream handle the looping |
bool RAMLoop; ///< If this voice has a loop defined which completely fits into the cached RAM part of the sample, in this case we handle the looping within the voice class, else if the loop is located in the disk stream part, we let the disk stream handle the looping |
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uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed |
//uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed |
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uint Delay; ///< Number of sample points the rendering process of this voice should be delayed (jitter correction), will be set to 0 after the first audio fragment cycle |
uint Delay; ///< Number of sample points the rendering process of this voice should be delayed (jitter correction), will be set to 0 after the first audio fragment cycle |
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EGADSR EG1; ///< Envelope Generator 1 (Amplification) |
EGADSR EG1; ///< Envelope Generator 1 (Amplification) |
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EGADSR EG2; ///< Envelope Generator 2 (Filter cutoff frequency) |
EGADSR EG2; ///< Envelope Generator 2 (Filter cutoff frequency) |
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EGDecay EG3; ///< Envelope Generator 3 (Pitch) |
EGDecay EG3; ///< Envelope Generator 3 (Pitch) |
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Filter FilterLeft; |
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Filter FilterRight; |
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midi_ctrl VCFCutoffCtrl; |
midi_ctrl VCFCutoffCtrl; |
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midi_ctrl VCFResonanceCtrl; |
midi_ctrl VCFResonanceCtrl; |
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static const float FILTER_CUTOFF_COEFF; |
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LFOUnsigned* pLFO1; ///< Low Frequency Oscillator 1 (Amplification) |
LFOUnsigned* pLFO1; ///< Low Frequency Oscillator 1 (Amplification) |
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LFOUnsigned* pLFO2; ///< Low Frequency Oscillator 2 (Filter cutoff frequency) |
LFOUnsigned* pLFO2; ///< Low Frequency Oscillator 2 (Filter cutoff frequency) |
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LFOSigned* pLFO3; ///< Low Frequency Oscillator 3 (Pitch) |
LFOSigned* pLFO3; ///< Low Frequency Oscillator 3 (Pitch) |
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Pool<Event>::Iterator itKillEvent; ///< Event which caused this voice to be killed |
Pool<Event>::Iterator itKillEvent; ///< Event which caused this voice to be killed |
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//private: |
//private: |
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int SynthesisMode; |
int SynthesisMode; |
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float fFinalPitch; |
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float fFinalVolume; |
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float fFinalCutoff; |
float fFinalCutoff; |
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float fFinalResonance; |
float fFinalResonance; |
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SynthesisParam finalSynthesisParameters; |
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Loop loop; |
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// Static Methods |
// Static Methods |
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static float CalculateFilterCutoffCoeff(); |
static float CalculateFilterCutoffCoeff(); |
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void processCutoffEvent(RTList<Event>::Iterator& itEvent); |
void processCutoffEvent(RTList<Event>::Iterator& itEvent); |
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void processResonanceEvent(RTList<Event>::Iterator& itEvent); |
void processResonanceEvent(RTList<Event>::Iterator& itEvent); |
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inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) { |
inline uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) { |
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float att = (!pDimRgn->Crossfade.out_end) ? CrossfadeControllerValue / 127.0f /* 0,0,0,0 means no crossfade defined */ |
uint8_t c = std::max(CrossfadeControllerValue, pDimRgn->AttenuationControllerThreshold); |
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: (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ? |
c = (!pDimRgn->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */ |
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((CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f |
: (c < pDimRgn->Crossfade.in_end) ? |
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: float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start)) |
((c <= pDimRgn->Crossfade.in_start) ? 0 |
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: (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f |
: 127 * (c - pDimRgn->Crossfade.in_start) / (pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start)) |
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: (CrossfadeControllerValue < pDimRgn->Crossfade.out_end) ? float(pDimRgn->Crossfade.out_end - CrossfadeControllerValue) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start) |
: (c <= pDimRgn->Crossfade.out_start) ? 127 |
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: 0.0f; |
: (c < pDimRgn->Crossfade.out_end) ? 127 * (pDimRgn->Crossfade.out_end - c) / (pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start) |
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return pDimRgn->InvertAttenuationController ? 1 - att : att; |
: 0; |
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return pDimRgn->InvertAttenuationController ? 127 - c : c; |
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} |
} |
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inline float Constrain(float ValueToCheck, float Min, float Max) { |
inline float Constrain(float ValueToCheck, float Min, float Max) { |