/[svn]/linuxsampler/trunk/src/engines/gig/Voice.h
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Diff of /linuxsampler/trunk/src/engines/gig/Voice.h

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revision 203 by schoenebeck, Tue Jul 13 22:44:13 2004 UTC revision 273 by schoenebeck, Fri Oct 8 21:04:51 2004 UTC
# Line 31  Line 31 
31    
32  #include "../../common/RTMath.h"  #include "../../common/RTMath.h"
33  #include "../../common/RingBuffer.h"  #include "../../common/RingBuffer.h"
34  #include "../../common/RTELMemoryPool.h"  #include "../../common/Pool.h"
35  #include "../../drivers/audio/AudioOutputDevice.h"  #include "../../drivers/audio/AudioOutputDevice.h"
36  #include "../../lib/fileloader/libgig/gig.h"  #include "../../lib/fileloader/libgig/gig.h"
37  #include "../common/BiquadFilter.h"  #include "../common/BiquadFilter.h"
# Line 80  namespace LinuxSampler { namespace gig { Line 80  namespace LinuxSampler { namespace gig {
80       */       */
81      class Voice {      class Voice {
82          public:          public:
83                // Types
84                enum type_t {
85                    type_normal,
86                    type_release_trigger_required,  ///< If the key of this voice will be released, it causes a release triggered voice to be spawned
87                    type_release_trigger            ///< Release triggered voice which cannot be killed by releasing its key
88                };
89    
90              // Attributes              // Attributes
91                type_t       Type;         ///< Voice Type
92              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice
93                uint         KeyGroup;
94              DiskThread*  pDiskThread;  ///< Pointer to the disk thread, to be able to order a disk stream and later to delete the stream again              DiskThread*  pDiskThread;  ///< Pointer to the disk thread, to be able to order a disk stream and later to delete the stream again
95    
96              // Methods              // Methods
97              Voice();              Voice();
98             ~Voice();             ~Voice();
99              void Kill();              void Kill(Pool<Event>::Iterator& itKillEvent);
100                void KillImmediately();
101              void Render(uint Samples);              void Render(uint Samples);
102              void Reset();              void Reset();
103              void SetOutput(AudioOutputDevice* pAudioOutputDevice);              void SetOutput(AudioOutputDevice* pAudioOutputDevice);
104              void SetEngine(Engine* pEngine);              void SetEngine(Engine* pEngine);
105              int  Trigger(Event* pNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument);              int  Trigger(Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer = 0, bool ReleaseTriggerVoice = false);
106              inline bool IsActive() { return Active; }              inline bool IsActive() { return Active; }
107          private:          private:
108              // Types              // Types
# Line 105  namespace LinuxSampler { namespace gig { Line 115  namespace LinuxSampler { namespace gig {
115              // Attributes              // Attributes
116              gig::Engine*                pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.              gig::Engine*                pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.
117              float                       Volume;             ///< Volume level of the voice              float                       Volume;             ///< Volume level of the voice
118              float*                      pOutputLeft;        ///< Audio output channel buffer (left)              float                       PanLeft;
119              float*                      pOutputRight;       ///< Audio output channel buffer (right)              float                       PanRight;
120              uint                        SampleRate;         ///< Sample rate of the engines output audio signal (in Hz)              float                       CrossfadeVolume;    ///< Current attenuation level caused by a crossfade (only if a crossfade is defined of course)
             uint                        MaxSamplesPerCycle; ///< Size of each audio output buffer  
121              double                      Pos;                ///< Current playback position in sample              double                      Pos;                ///< Current playback position in sample
122              double                      PitchBase;          ///< Basic pitch depth, stays the same for the whole life time of the voice              double                      PitchBase;          ///< Basic pitch depth, stays the same for the whole life time of the voice
123              double                      PitchBend;          ///< Current pitch value of the pitchbend wheel              double                      PitchBend;          ///< Current pitch value of the pitchbend wheel
124              ::gig::Sample*              pSample;            ///< Pointer to the sample to be played back              ::gig::Sample*              pSample;            ///< Pointer to the sample to be played back
125              ::gig::Region*              pRegion;            ///< Pointer to the articulation information of the respective keyboard region of this voice              ::gig::Region*              pRegion;            ///< Pointer to the articulation information of the respective keyboard region of this voice
126                ::gig::DimensionRegion*     pDimRgn;            ///< Pointer to the articulation information of current dimension region of this voice
127              bool                        Active;             ///< If this voice object is currently in usage              bool                        Active;             ///< If this voice object is currently in usage
128              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
129              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
# Line 138  namespace LinuxSampler { namespace gig { Line 148  namespace LinuxSampler { namespace gig {
148              LFO<gig::VCAManipulator>*   pLFO1;              ///< Low Frequency Oscillator 1 (Amplification)              LFO<gig::VCAManipulator>*   pLFO1;              ///< Low Frequency Oscillator 1 (Amplification)
149              LFO<gig::VCFCManipulator>*  pLFO2;             ///< Low Frequency Oscillator 2 (Filter cutoff frequency)              LFO<gig::VCFCManipulator>*  pLFO2;             ///< Low Frequency Oscillator 2 (Filter cutoff frequency)
150              LFO<gig::VCOManipulator>*   pLFO3;              ///< Low Frequency Oscillator 3 (Pitch)              LFO<gig::VCOManipulator>*   pLFO3;              ///< Low Frequency Oscillator 3 (Pitch)
151              Event*                      pTriggerEvent;      ///< First event on the key's list the voice should process (only needed for the first audio fragment in which voice was triggered, after that it will be set to NULL).              Pool<Event>::Iterator       itTriggerEvent;      ///< First event on the key's list the voice should process (only needed for the first audio fragment in which voice was triggered, after that it will be set to NULL).
152                Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed
153    
154              // Static Methods              // Static Methods
155              static float CalculateFilterCutoffCoeff();              static float CalculateFilterCutoffCoeff();
# Line 149  namespace LinuxSampler { namespace gig { Line 160  namespace LinuxSampler { namespace gig {
160              #if ENABLE_FILTER              #if ENABLE_FILTER
161              void        CalculateBiquadParameters(uint Samples);              void        CalculateBiquadParameters(uint Samples);
162              #endif // ENABLE_FILTER              #endif // ENABLE_FILTER
163              void        Interpolate(uint Samples, sample_t* pSrc, uint Skip);              void        InterpolateNoLoop(uint Samples, sample_t* pSrc, uint Skip);
164              void        InterpolateAndLoop(uint Samples, sample_t* pSrc, uint Skip);              void        InterpolateAndLoop(uint Samples, sample_t* pSrc, uint Skip);
165              inline void InterpolateOneStep_Stereo(sample_t* pSrc, int& i, float& effective_volume, float& pitch, biquad_param_t& bq_base, biquad_param_t& bq_main) {  
166                inline void InterpolateMono(sample_t* pSrc, int& i) {
167                    InterpolateOneStep_Mono(pSrc, i,
168                                            pEngine->pSynthesisParameters[Event::destination_vca][i] * PanLeft,
169                                            pEngine->pSynthesisParameters[Event::destination_vca][i] * PanRight,
170                                            pEngine->pSynthesisParameters[Event::destination_vco][i],
171                                            pEngine->pBasicFilterParameters[i],
172                                            pEngine->pMainFilterParameters[i]);
173                }
174    
175                inline void InterpolateStereo(sample_t* pSrc, int& i) {
176                    InterpolateOneStep_Stereo(pSrc, i,
177                                              pEngine->pSynthesisParameters[Event::destination_vca][i] * PanLeft,
178                                              pEngine->pSynthesisParameters[Event::destination_vca][i] * PanRight,
179                                              pEngine->pSynthesisParameters[Event::destination_vco][i],
180                                              pEngine->pBasicFilterParameters[i],
181                                              pEngine->pMainFilterParameters[i]);
182                }
183    
184                inline void InterpolateOneStep_Stereo(sample_t* pSrc, int& i, float volume_left, float volume_right, float& pitch, biquad_param_t& bq_base, biquad_param_t& bq_main) {
185                  int   pos_int   = RTMath::DoubleToInt(this->Pos);  // integer position                  int   pos_int   = RTMath::DoubleToInt(this->Pos);  // integer position
186                  float pos_fract = this->Pos - pos_int;             // fractional part of position                  float pos_fract = this->Pos - pos_int;             // fractional part of position
187                  pos_int <<= 1;                  pos_int <<= 1;
# Line 159  namespace LinuxSampler { namespace gig { Line 189  namespace LinuxSampler { namespace gig {
189                  #if USE_LINEAR_INTERPOLATION                  #if USE_LINEAR_INTERPOLATION
190                      #if ENABLE_FILTER                      #if ENABLE_FILTER
191                          // left channel                          // left channel
192                          pOutputLeft[i]    += this->FilterLeft.Apply(&bq_base, &bq_main, effective_volume * (pSrc[pos_int]   + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int])));                          pEngine->pOutputLeft[i]    += this->FilterLeft.Apply(&bq_base, &bq_main, volume_left * (pSrc[pos_int]   + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int])));
193                          // right channel                          // right channel
194                          pOutputRight[i++] += this->FilterRight.Apply(&bq_base, &bq_main, effective_volume * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1])));                          pEngine->pOutputRight[i++] += this->FilterRight.Apply(&bq_base, &bq_main, volume_right * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1])));
195                      #else // no filter                      #else // no filter
196                          // left channel                          // left channel
197                          pOutputLeft[i]    += effective_volume * (pSrc[pos_int]   + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int]));                          pEngine->pOutputLeft[i]    += volume_left * (pSrc[pos_int]   + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int]));
198                          // right channel                          // right channel
199                          pOutputRight[i++] += effective_volume * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1]));                          pEngine->pOutputRight[i++] += volume_right * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1]));
200                      #endif // ENABLE_FILTER                      #endif // ENABLE_FILTER
201                  #else // polynomial interpolation                  #else // polynomial interpolation
202                      // calculate left channel                      // calculate left channel
# Line 178  namespace LinuxSampler { namespace gig { Line 208  namespace LinuxSampler { namespace gig {
208                      float b   = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f;                      float b   = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f;
209                      float c   = (x1 - xm1) * 0.5f;                      float c   = (x1 - xm1) * 0.5f;
210                      #if ENABLE_FILTER                      #if ENABLE_FILTER
211                          pOutputLeft[i] += this->FilterLeft.Apply(&bq_base, &bq_main, effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0));                          pEngine->pOutputLeft[i] += this->FilterLeft.Apply(&bq_base, &bq_main, volume_left * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0));
212                      #else // no filter                      #else // no filter
213                          pOutputLeft[i] += effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0);                          pEngine->pOutputLeft[i] += volume_left * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0);
214                      #endif // ENABLE_FILTER                      #endif // ENABLE_FILTER
215    
216                      //calculate right channel                      //calculate right channel
# Line 192  namespace LinuxSampler { namespace gig { Line 222  namespace LinuxSampler { namespace gig {
222                      b   = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f;                      b   = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f;
223                      c   = (x1 - xm1) * 0.5f;                      c   = (x1 - xm1) * 0.5f;
224                      #if ENABLE_FILTER                      #if ENABLE_FILTER
225                          pOutputRight[i++] += this->FilterRight.Apply(&bq_base, &bq_main, effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0));                          pEngine->pOutputRight[i++] += this->FilterRight.Apply(&bq_base, &bq_main, volume_right * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0));
226                      #else // no filter                      #else // no filter
227                          pOutputRight[i++] += effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0);                          pEngine->pOutputRight[i++] += volume_right * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0);
228                      #endif // ENABLE_FILTER                      #endif // ENABLE_FILTER
229                  #endif // USE_LINEAR_INTERPOLATION                  #endif // USE_LINEAR_INTERPOLATION
230    
231                  this->Pos += pitch;                  this->Pos += pitch;
232              }              }
233    
234              inline void InterpolateOneStep_Mono(sample_t* pSrc, int& i, float& effective_volume, float& pitch,  biquad_param_t& bq_base, biquad_param_t& bq_main) {              inline void InterpolateOneStep_Mono(sample_t* pSrc, int& i, float volume_left, float volume_right, float& pitch,  biquad_param_t& bq_base, biquad_param_t& bq_main) {
235                  int   pos_int   = RTMath::DoubleToInt(this->Pos);  // integer position                  int   pos_int   = RTMath::DoubleToInt(this->Pos);  // integer position
236                  float pos_fract = this->Pos - pos_int;             // fractional part of position                  float pos_fract = this->Pos - pos_int;             // fractional part of position
237    
238                  #if USE_LINEAR_INTERPOLATION                  #if USE_LINEAR_INTERPOLATION
239                      float sample_point  = effective_volume * (pSrc[pos_int] + pos_fract * (pSrc[pos_int+1] - pSrc[pos_int]));                      float sample_point  = pSrc[pos_int] + pos_fract * (pSrc[pos_int+1] - pSrc[pos_int]);
240                  #else // polynomial interpolation                  #else // polynomial interpolation
241                      float xm1 = pSrc[pos_int];                      float xm1 = pSrc[pos_int];
242                      float x0  = pSrc[pos_int+1];                      float x0  = pSrc[pos_int+1];
# Line 215  namespace LinuxSampler { namespace gig { Line 245  namespace LinuxSampler { namespace gig {
245                      float a   = (3.0f * (x0 - x1) - xm1 + x2) * 0.5f;                      float a   = (3.0f * (x0 - x1) - xm1 + x2) * 0.5f;
246                      float b   = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f;                      float b   = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f;
247                      float c   = (x1 - xm1) * 0.5f;                      float c   = (x1 - xm1) * 0.5f;
248                      float sample_point = effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0);                      float sample_point =  (((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0;
249                  #endif // USE_LINEAR_INTERPOLATION                  #endif // USE_LINEAR_INTERPOLATION
250    
251                  #if ENABLE_FILTER                  #if ENABLE_FILTER
252                      sample_point = this->FilterLeft.Apply(&bq_base, &bq_main, sample_point);                      sample_point = this->FilterLeft.Apply(&bq_base, &bq_main, sample_point);
253                  #endif // ENABLE_FILTER                  #endif // ENABLE_FILTER
254    
255                  pOutputLeft[i]    += sample_point;                  pEngine->pOutputLeft[i]    += sample_point * volume_left;
256                  pOutputRight[i++] += sample_point;                  pEngine->pOutputRight[i++] += sample_point * volume_right;
257    
258                  this->Pos += pitch;                  this->Pos += pitch;
259              }              }
260    
261                inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
262                    return (CrossfadeControllerValue <= pDimRgn->Crossfade.in_start)  ? 0.0f
263                         : (CrossfadeControllerValue < pDimRgn->Crossfade.in_end)     ? float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start)
264                         : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f
265                         : (CrossfadeControllerValue < pDimRgn->Crossfade.out_end)    ? float(CrossfadeControllerValue - pDimRgn->Crossfade.out_start) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)
266                         : 0.0f;
267                }
268    
269              inline float Constrain(float ValueToCheck, float Min, float Max) {              inline float Constrain(float ValueToCheck, float Min, float Max) {
270                  if      (ValueToCheck > Max) ValueToCheck = Max;                  if      (ValueToCheck > Max) ValueToCheck = Max;
271                  else if (ValueToCheck < Min) ValueToCheck = Min;                  else if (ValueToCheck < Min) ValueToCheck = Min;
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