You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.5 KiB
61 lines
1.5 KiB
8 years ago
|
#include "AudioMixer_F32.h"
|
||
|
|
|
||
|
|
void AudioMixer4_F32::update(void) {
|
||
|
|
audio_block_f32_t *in, *out=NULL;
|
||
|
|
|
||
|
|
out = receiveWritable_f32(0);
|
||
|
|
if (!out) return;
|
||
|
|
|
||
|
|
arm_scale_f32(out->data, multiplier[0], out->data, out->length);
|
||
|
|
|
||
|
|
for (int channel=1; channel < 4; channel++) {
|
||
|
|
in = receiveReadOnly_f32(channel);
|
||
|
|
if (!in) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
audio_block_f32_t *tmp = allocate_f32();
|
||
|
|
|
||
|
|
arm_scale_f32(in->data, multiplier[channel], tmp->data, tmp->length);
|
||
|
|
arm_add_f32(out->data, tmp->data, out->data, tmp->length);
|
||
|
|
|
||
|
|
AudioStream_F32::release(tmp);
|
||
|
|
AudioStream_F32::release(in);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (out) {
|
||
|
|
AudioStream_F32::transmit(out);
|
||
|
|
AudioStream_F32::release(out);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void AudioMixer8_F32::update(void) {
|
||
|
|
audio_block_f32_t *in, *out=NULL;
|
||
|
|
|
||
|
|
out = receiveWritable_f32(0); //try to get the first input channel
|
||
|
|
if (!out) return; //if it's not there, return immediately
|
||
|
|
|
||
|
|
arm_scale_f32(out->data, multiplier[0], out->data, out->length); //scale the first input channel
|
||
|
|
|
||
|
|
//load and process the rest of the channels
|
||
|
|
for (int channel=1; channel < 8; channel++) {
|
||
|
|
in = receiveReadOnly_f32(channel);
|
||
|
|
if (!in) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
audio_block_f32_t *tmp = allocate_f32();
|
||
|
|
|
||
|
|
arm_scale_f32(in->data, multiplier[channel], tmp->data, tmp->length);
|
||
|
|
arm_add_f32(out->data, tmp->data, out->data, tmp->length);
|
||
|
|
|
||
|
|
AudioStream_F32::release(tmp);
|
||
|
|
AudioStream_F32::release(in);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (out) {
|
||
|
|
AudioStream_F32::transmit(out);
|
||
|
|
AudioStream_F32::release(out);
|
||
|
|
}
|
||
|
|
}
|