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38 lines
929 B
38 lines
929 B
/*
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* AudioMixer4
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*
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* Created: Patrick Radius, December 2016
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* Purpose: Mix up to 4 audio channels with individual gain controls.
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* Assumes floating-point data.
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*
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* This processes a single stream fo audio data (ie, it is mono)
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*
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* MIT License. use at your own risk.
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*/
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#ifndef AUDIOMIXER4F32_H
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#define AUDIOMIXER4F32_H
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#include <arm_math.h>
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#include <AudioStream_F32.h>
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class AudioMixer4_F32 : public AudioStream_F32 {
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//GUI: inputs:4, outputs:1 //this line used for automatic generation of GUI node
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public:
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AudioMixer4_F32() : AudioStream_F32(4, inputQueueArray) {
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for (int i=0; i<4; i++) multiplier[i] = 1.0;
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}
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virtual void update(void);
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void gain(unsigned int channel, float gain) {
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if (channel >= 4 || channel < 0) return;
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multiplier[channel] = gain;
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}
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private:
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audio_block_f32_t *inputQueueArray[4];
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float multiplier[4];
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};
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#endif |