/[svn]/linuxsampler/trunk/src/engines/gig/EGADSR.h
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revision 782 by persson, Fri Sep 2 20:11:55 2005 UTC revision 783 by persson, Sun Oct 2 14:40:52 2005 UTC
# Line 54  class EGADSR { Line 54  class EGADSR {
54          enum event_t {          enum event_t {
55              event_stage_end,              event_stage_end,
56              event_release,              event_release,
57              event_cancel_release              event_cancel_release,
58                event_hold_end
59          };          };
60    
61          /**          /**
# Line 76  class EGADSR { Line 77  class EGADSR {
77           *                          (0.000 - 60.000s)           *                          (0.000 - 60.000s)
78           * @param HoldAttack      - if true, Decay1 will be postponed until the           * @param HoldAttack      - if true, Decay1 will be postponed until the
79           *                          sample reached the sample loop start.           *                          sample reached the sample loop start.
          * @param LoopStart       - sample position where sample loop starts  
          *                          (if any)  
80           * @param Decay1Time      - Decay1 time of the sample amplitude EG           * @param Decay1Time      - Decay1 time of the sample amplitude EG
81           *                          (0.000 - 60.000s)           *                          (0.000 - 60.000s)
82           * @param Decay2Time      - only if !InfiniteSustain: 2nd decay stage           * @param Decay2Time      - only if !InfiniteSustain: 2nd decay stage
# Line 95  class EGADSR { Line 94  class EGADSR {
94           *                          exponential curve parameters.           *                          exponential curve parameters.
95           * @param SampleRate      - sample rate of used audio output driver           * @param SampleRate      - sample rate of used audio output driver
96           */           */
97          void trigger(uint PreAttack, float AttackTime, bool HoldAttack, long LoopStart, float Decay1Time, double Decay2Time, bool InfiniteSustain, uint SustainLevel, float ReleaseTime, float Volume, uint SampleRate); //FIXME: we should better use 'float' for SampleRate          void trigger(uint PreAttack, float AttackTime, bool HoldAttack, float Decay1Time, double Decay2Time, bool InfiniteSustain, uint SustainLevel, float ReleaseTime, float Volume, uint SampleRate); //FIXME: we should better use 'float' for SampleRate
98    
99          /**          /**
100           * Returns true in case envelope hasn't reached its final end state yet.           * Returns true in case envelope hasn't reached its final end state yet.
# Line 131  class EGADSR { Line 130  class EGADSR {
130           * the envelope's transition to the respective next stage.           * the envelope's transition to the respective next stage.
131           *           *
132           * @param Event        - what happened           * @param Event        - what happened
          * @param SamplePos    - current sample playback position  
          * @param CurrentPitch - current frequency alternation quotient  
133           */           */
134          void update(event_t Event, double SamplePos, float CurrentPitch, uint SampleRate);          void update(event_t Event, uint SampleRate);
135    
136          /**          /**
137           * Calculates exactly one, the next sample point of EG           * Calculates exactly one, the next sample point of EG
# Line 189  class EGADSR { Line 186  class EGADSR {
186          int       StepsLeft;          int       StepsLeft;
187          segment_t Segment;          segment_t Segment;
188          stage_t   Stage;          stage_t   Stage;
         event_t   PostponedEvent; ///< only used in Attack stage to postpone transition events until attack time is reached  
189          bool      HoldAttack;          bool      HoldAttack;
190          bool      InfiniteSustain;          bool      InfiniteSustain;
         long      LoopStart;  
191          float     Decay1Time;          float     Decay1Time;
192          float     Decay1Level2;          float     Decay1Level2;
193          float     Decay1Slope;          float     Decay1Slope;
# Line 207  class EGADSR { Line 202  class EGADSR {
202          float     ExpOffset;          float     ExpOffset;
203          float     FadeOutCoeff; ///< very fast ramp down for e.g. voice stealing          float     FadeOutCoeff; ///< very fast ramp down for e.g. voice stealing
204    
205          void enterAttackStage(const uint PreAttack, const float AttackTime, const uint SampleRate, const double SamplePos, const float CurrentPitch);          void enterAttackStage(const uint PreAttack, const float AttackTime, const uint SampleRate);
206          void enterAttackHoldStage(const double SamplePos, const float CurrentPitch);          void enterAttackHoldStage();
207          void enterDecay1Part1Stage(const uint SampleRate);          void enterDecay1Part1Stage(const uint SampleRate);
208          void enterDecay1Part2Stage(const uint SampleRate);          void enterDecay1Part2Stage(const uint SampleRate);
209          void enterDecay2Stage(const uint SampleRate);          void enterDecay2Stage(const uint SampleRate);
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