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*/ |
*/ |
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class Voice { |
class Voice { |
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public: |
public: |
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// Types |
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enum type_t { |
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type_normal, |
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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 |
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type_release_trigger ///< Release triggered voice which cannot be killed by releasing its key |
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}; |
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// 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 |
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uint KeyGroup; |
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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 |
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// Methods |
// Methods |
97 |
Voice(); |
Voice(); |
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~Voice(); |
~Voice(); |
99 |
void Kill(); |
void Kill(Event* pKillEvent); |
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void KillImmediately(); |
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void Render(uint Samples); |
void Render(uint Samples); |
102 |
void Reset(); |
void Reset(); |
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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(Event* pNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer = 0, bool ReleaseTriggerVoice = false); |
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inline bool IsActive() { return Active; } |
inline bool IsActive() { return Active; } |
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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 |
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float* pOutputLeft; ///< Audio output channel buffer (left) |
float CrossfadeVolume; ///< Current attenuation level caused by a crossfade (only if a crossfade is defined of course) |
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float* pOutputRight; ///< Audio output channel buffer (right) |
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uint SampleRate; ///< Sample rate of the engines output audio signal (in Hz) |
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uint MaxSamplesPerCycle; ///< Size of each audio output buffer |
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119 |
double Pos; ///< Current playback position in sample |
double Pos; ///< Current playback position in sample |
120 |
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 |
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double PitchBend; ///< Current pitch value of the pitchbend wheel |
double PitchBend; ///< Current pitch value of the pitchbend wheel |
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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 |
123 |
::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 |
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::gig::DimensionRegion* pDimRgn; ///< Pointer to the articulation information of current dimension region of this voice |
125 |
bool Active; ///< If this voice object is currently in usage |
bool Active; ///< If this voice object is currently in usage |
126 |
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 |
147 |
LFO<gig::VCFCManipulator>* pLFO2; ///< Low Frequency Oscillator 2 (Filter cutoff frequency) |
LFO<gig::VCFCManipulator>* pLFO2; ///< Low Frequency Oscillator 2 (Filter cutoff frequency) |
148 |
LFO<gig::VCOManipulator>* pLFO3; ///< Low Frequency Oscillator 3 (Pitch) |
LFO<gig::VCOManipulator>* pLFO3; ///< Low Frequency Oscillator 3 (Pitch) |
149 |
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). |
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). |
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Event* pKillEvent; ///< Event which caused this voice to be killed |
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// Static Methods |
// Static Methods |
153 |
static float CalculateFilterCutoffCoeff(); |
static float CalculateFilterCutoffCoeff(); |
168 |
#if USE_LINEAR_INTERPOLATION |
#if USE_LINEAR_INTERPOLATION |
169 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
170 |
// left channel |
// left channel |
171 |
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, effective_volume * (pSrc[pos_int] + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int]))); |
172 |
// right channel |
// right channel |
173 |
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, effective_volume * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1]))); |
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#else // no filter |
#else // no filter |
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// left channel |
// left channel |
176 |
pOutputLeft[i] += effective_volume * (pSrc[pos_int] + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int])); |
pEngine->pOutputLeft[i] += effective_volume * (pSrc[pos_int] + pos_fract * (pSrc[pos_int+2] - pSrc[pos_int])); |
177 |
// right channel |
// right channel |
178 |
pOutputRight[i++] += effective_volume * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1])); |
pEngine->pOutputRight[i++] += effective_volume * (pSrc[pos_int+1] + pos_fract * (pSrc[pos_int+3] - pSrc[pos_int+1])); |
179 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
180 |
#else // polynomial interpolation |
#else // polynomial interpolation |
181 |
// calculate left channel |
// calculate left channel |
187 |
float b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
float b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
188 |
float c = (x1 - xm1) * 0.5f; |
float c = (x1 - xm1) * 0.5f; |
189 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
190 |
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, effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0)); |
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#else // no filter |
#else // no filter |
192 |
pOutputLeft[i] += effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0); |
pEngine->pOutputLeft[i] += effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0); |
193 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
194 |
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195 |
//calculate right channel |
//calculate right channel |
201 |
b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
202 |
c = (x1 - xm1) * 0.5f; |
c = (x1 - xm1) * 0.5f; |
203 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
204 |
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, effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0)); |
205 |
#else // no filter |
#else // no filter |
206 |
pOutputRight[i++] += effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0); |
pEngine->pOutputRight[i++] += effective_volume * ((((a * pos_fract) + b) * pos_fract + c) * pos_fract + x0); |
207 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
208 |
#endif // USE_LINEAR_INTERPOLATION |
#endif // USE_LINEAR_INTERPOLATION |
209 |
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231 |
sample_point = this->FilterLeft.Apply(&bq_base, &bq_main, sample_point); |
sample_point = this->FilterLeft.Apply(&bq_base, &bq_main, sample_point); |
232 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
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234 |
pOutputLeft[i] += sample_point; |
pEngine->pOutputLeft[i] += sample_point; |
235 |
pOutputRight[i++] += sample_point; |
pEngine->pOutputRight[i++] += sample_point; |
236 |
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237 |
this->Pos += pitch; |
this->Pos += pitch; |
238 |
} |
} |
239 |
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240 |
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inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) { |
241 |
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return (CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f |
242 |
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: (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ? float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start) |
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: (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f |
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: (CrossfadeControllerValue < pDimRgn->Crossfade.out_end) ? float(CrossfadeControllerValue - pDimRgn->Crossfade.out_start) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start) |
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: 0.0f; |
246 |
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} |
247 |
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248 |
inline float Constrain(float ValueToCheck, float Min, float Max) { |
inline float Constrain(float ValueToCheck, float Min, float Max) { |
249 |
if (ValueToCheck > Max) ValueToCheck = Max; |
if (ValueToCheck > Max) ValueToCheck = Max; |
250 |
else if (ValueToCheck < Min) ValueToCheck = Min; |
else if (ValueToCheck < Min) ValueToCheck = Min; |