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61 lines
1.5 KiB
61 lines
1.5 KiB
8 years ago
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#include "AudioMixer_F32.h"
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void AudioMixer4_F32::update(void) {
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audio_block_f32_t *in, *out=NULL;
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out = receiveWritable_f32(0);
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if (!out) return;
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arm_scale_f32(out->data, multiplier[0], out->data, out->length);
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for (int channel=1; channel < 4; channel++) {
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in = receiveReadOnly_f32(channel);
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if (!in) {
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continue;
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}
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audio_block_f32_t *tmp = allocate_f32();
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arm_scale_f32(in->data, multiplier[channel], tmp->data, tmp->length);
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arm_add_f32(out->data, tmp->data, out->data, tmp->length);
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AudioStream_F32::release(tmp);
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AudioStream_F32::release(in);
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}
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if (out) {
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AudioStream_F32::transmit(out);
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AudioStream_F32::release(out);
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}
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}
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void AudioMixer8_F32::update(void) {
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audio_block_f32_t *in, *out=NULL;
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out = receiveWritable_f32(0); //try to get the first input channel
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if (!out) return; //if it's not there, return immediately
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arm_scale_f32(out->data, multiplier[0], out->data, out->length); //scale the first input channel
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//load and process the rest of the channels
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for (int channel=1; channel < 4; channel++) {
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in = receiveReadOnly_f32(channel);
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if (!in) {
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continue;
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}
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audio_block_f32_t *tmp = allocate_f32();
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arm_scale_f32(in->data, multiplier[channel], tmp->data, tmp->length);
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arm_add_f32(out->data, tmp->data, out->data, tmp->length);
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AudioStream_F32::release(tmp);
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AudioStream_F32::release(in);
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}
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if (out) {
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AudioStream_F32::transmit(out);
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AudioStream_F32::release(out);
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}
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}
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