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49 lines
889 B
C++
49 lines
889 B
C++
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//
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// Speaker.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 03/12/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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#include "Speaker.hpp"
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using namespace Electron;
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void Speaker::get_samples(unsigned int number_of_samples, int16_t *target)
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{
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if(is_enabled_)
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{
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while(number_of_samples--)
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{
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*target = (int16_t)((counter_ / (divider_+1)) * 8192);
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target++;
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counter_ = (counter_ + 1) % ((divider_+1) * 2);
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}
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}
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else
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{
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memset(target, 0, sizeof(int16_t) * number_of_samples);
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}
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}
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void Speaker::skip_samples(unsigned int number_of_samples)
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{
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counter_ = (counter_ + number_of_samples) % ((divider_+1) * 2);
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}
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void Speaker::set_divider(uint8_t divider)
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{
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enqueue([=]() {
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divider_ = divider * 32 / clock_rate_divider;
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});
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}
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void Speaker::set_is_enabled(bool is_enabled)
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{
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enqueue([=]() {
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is_enabled_ = is_enabled;
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counter_ = 0;
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});
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}
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