105 |
// Attributes |
// Attributes |
106 |
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. |
107 |
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) |
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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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108 |
double Pos; ///< Current playback position in sample |
double Pos; ///< Current playback position in sample |
109 |
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 |
110 |
double PitchBend; ///< Current pitch value of the pitchbend wheel |
double PitchBend; ///< Current pitch value of the pitchbend wheel |
155 |
#if USE_LINEAR_INTERPOLATION |
#if USE_LINEAR_INTERPOLATION |
156 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
157 |
// left channel |
// left channel |
158 |
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]))); |
159 |
// right channel |
// right channel |
160 |
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]))); |
161 |
#else // no filter |
#else // no filter |
162 |
// left channel |
// left channel |
163 |
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])); |
164 |
// right channel |
// right channel |
165 |
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])); |
166 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
167 |
#else // polynomial interpolation |
#else // polynomial interpolation |
168 |
// calculate left channel |
// calculate left channel |
174 |
float b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
float b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
175 |
float c = (x1 - xm1) * 0.5f; |
float c = (x1 - xm1) * 0.5f; |
176 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
177 |
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)); |
178 |
#else // no filter |
#else // no filter |
179 |
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); |
180 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
181 |
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182 |
//calculate right channel |
//calculate right channel |
188 |
b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
b = 2.0f * x1 + xm1 - (5.0f * x0 + x2) * 0.5f; |
189 |
c = (x1 - xm1) * 0.5f; |
c = (x1 - xm1) * 0.5f; |
190 |
#if ENABLE_FILTER |
#if ENABLE_FILTER |
191 |
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)); |
192 |
#else // no filter |
#else // no filter |
193 |
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); |
194 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
195 |
#endif // USE_LINEAR_INTERPOLATION |
#endif // USE_LINEAR_INTERPOLATION |
196 |
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218 |
sample_point = this->FilterLeft.Apply(&bq_base, &bq_main, sample_point); |
sample_point = this->FilterLeft.Apply(&bq_base, &bq_main, sample_point); |
219 |
#endif // ENABLE_FILTER |
#endif // ENABLE_FILTER |
220 |
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221 |
pOutputLeft[i] += sample_point; |
pEngine->pOutputLeft[i] += sample_point; |
222 |
pOutputRight[i++] += sample_point; |
pEngine->pOutputRight[i++] += sample_point; |
223 |
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224 |
this->Pos += pitch; |
this->Pos += pitch; |
225 |
} |
} |