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out-of-line inline's for performance critical member functions

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Craig Hansen-Sturm 2014-09-15 18:38:36 -07:00
parent d8a4d71b08
commit 8de32f1170
1 changed files with 26 additions and 52 deletions
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78
libraries/audio/src/AudioSourceTone.h
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@ -23,67 +23,41 @@ class AudioSourceTone
float32_t _yq1; float32_t _yq1;
float32_t _y1; float32_t _y1;
void updateCoefficients() { void updateCoefficients();
_omega = _frequency / _sampleRate * TWO_PI;
_epsilon = 2.0f * sinf(_omega / 2.0f);
_yq1 = cosf(-1.0f * _omega);
_y1 = sinf(+1.0f * _omega);
}
public: public:
AudioSourceTone() { AudioSourceTone();
initialize(); ~AudioSourceTone();
}
~AudioSourceTone() { void initialize();
finalize(); void finalize();
} void reset();
void initialize() {
const float32_t FREQUENCY_220_HZ = 220.0f;
const float32_t GAIN_MINUS_3DB = 0.708f;
setParameters(SAMPLE_RATE, FREQUENCY_220_HZ, GAIN_MINUS_3DB);
}
void finalize() {
}
void reset() {
}
void setParameters(const float32_t sampleRate, const float32_t frequency, const float32_t amplitude) { void setParameters(const float32_t sampleRate, const float32_t frequency, const float32_t amplitude);
_sampleRate = std::max(sampleRate, 1.0f); void getParameters(float32_t& sampleRate, float32_t& frequency, float32_t& amplitude);
_frequency = std::max(frequency, 1.0f);
_amplitude = std::max(amplitude, 1.0f);
updateCoefficients();
}
void getParameters(float32_t& sampleRate, float32_t& frequency, float32_t& amplitude) { void render(AudioBufferFloat32& frameBuffer);
sampleRate = _sampleRate; };
frequency = _frequency;
amplitude = _amplitude;
}
void render(AudioBufferFloat32& frameBuffer) {
inline void AudioSourceTone::render(AudioBufferFloat32& frameBuffer) {
float32_t** samples = frameBuffer.getFrameData();
float32_t yq;
float32_t y;
for (uint16_t i = 0; i < frameBuffer.getFrameCount(); ++i) {
float32_t** samples = frameBuffer.getFrameData(); yq = _yq1 - (_epsilon * _y1);
float32_t yq; y = _y1 + (_epsilon * yq);
float32_t y;
for (uint16_t i = 0; i < frameBuffer.getFrameCount(); ++i) { // update delays
_yq1 = yq;
yq = _yq1 - (_epsilon * _y1); _y1 = y;
y = _y1 + (_epsilon * yq);
for (uint16_t j = 0; j < frameBuffer.getChannelCount(); ++j) {
// update delays samples[j][i] = _amplitude * y;
_yq1 = yq;
_y1 = y;
for (uint16_t j = 0; j < frameBuffer.getChannelCount(); ++j) {
samples[j][i] = _amplitude * y;
}
} }
} }
}; }
#endif #endif