80 |
*/ |
*/ |
81 |
class Voice { |
class Voice { |
82 |
public: |
public: |
83 |
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// Types |
84 |
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enum type_t { |
85 |
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type_normal, |
86 |
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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 |
87 |
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type_release_trigger ///< Release triggered voice which cannot be killed by releasing its key |
88 |
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}; |
89 |
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|
90 |
// Attributes |
// Attributes |
91 |
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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 |
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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 |
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|
96 |
// Methods |
// Methods |
97 |
Voice(); |
Voice(); |
98 |
~Voice(); |
~Voice(); |
99 |
void Kill(); |
void Kill(Pool<Event>::Iterator& itKillEvent); |
100 |
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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 |
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 |
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float PanLeft; |
119 |
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float PanRight; |
120 |
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float CrossfadeVolume; ///< Current attenuation level caused by a crossfade (only if a crossfade is defined of course) |
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 |
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::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 |
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). |
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Pool<Event>::Iterator itKillEvent; ///< Event which caused this voice to be killed |
153 |
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154 |
// Static Methods |
// Static Methods |
155 |
static float CalculateFilterCutoffCoeff(); |
static float CalculateFilterCutoffCoeff(); |
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) { |
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166 |
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inline void InterpolateMono(sample_t* pSrc, int& i) { |
167 |
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InterpolateOneStep_Mono(pSrc, i, |
168 |
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pEngine->pSynthesisParameters[Event::destination_vca][i] * PanLeft, |
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pEngine->pSynthesisParameters[Event::destination_vca][i] * PanRight, |
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pEngine->pSynthesisParameters[Event::destination_vco][i], |
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pEngine->pBasicFilterParameters[i], |
172 |
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pEngine->pMainFilterParameters[i]); |
173 |
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} |
174 |
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175 |
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inline void InterpolateStereo(sample_t* pSrc, int& i) { |
176 |
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InterpolateOneStep_Stereo(pSrc, i, |
177 |
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pEngine->pSynthesisParameters[Event::destination_vca][i] * PanLeft, |
178 |
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pEngine->pSynthesisParameters[Event::destination_vca][i] * PanRight, |
179 |
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pEngine->pSynthesisParameters[Event::destination_vco][i], |
180 |
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pEngine->pBasicFilterParameters[i], |
181 |
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pEngine->pMainFilterParameters[i]); |
182 |
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} |
183 |
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184 |
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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; |
189 |
#if USE_LINEAR_INTERPOLATION |
#if USE_LINEAR_INTERPOLATION |
190 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
191 |
// left channel |
// left channel |
192 |
pEngine->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 |
pEngine->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 |
pEngine->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 |
pEngine->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 |
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 |
pEngine->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 |
pEngine->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 |
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|
216 |
//calculate right channel |
//calculate right channel |
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 |
pEngine->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 |
pEngine->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 |
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231 |
this->Pos += pitch; |
this->Pos += pitch; |
232 |
} |
} |
233 |
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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]; |
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 |
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|
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 |
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|
255 |
pEngine->pOutputLeft[i] += sample_point; |
pEngine->pOutputLeft[i] += sample_point * volume_left; |
256 |
pEngine->pOutputRight[i++] += sample_point; |
pEngine->pOutputRight[i++] += sample_point * volume_right; |
257 |
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|
258 |
this->Pos += pitch; |
this->Pos += pitch; |
259 |
} |
} |
260 |
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261 |
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inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) { |
262 |
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return (CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f |
263 |
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: (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ? float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start) |
264 |
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: (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f |
265 |
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: (CrossfadeControllerValue < pDimRgn->Crossfade.out_end) ? float(CrossfadeControllerValue - pDimRgn->Crossfade.out_start) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start) |
266 |
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: 0.0f; |
267 |
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} |
268 |
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|
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; |