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28 lines
607 B
28 lines
607 B
#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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public:
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AudioMixer4_F32() : AudioStream_F32(4, inputQueueArray) {
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for (int i=0; i<4; i++) multiplier[i] = 0.5;
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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) return;
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if (gain > 127.0f) gain = 127.0f;
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else if (gain < 0.0f) gain = 0.0f;
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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 |