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Avoids unnecessary filter recalculation.

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This commit is contained in:
Thomas Harte 2020-02-09 16:32:32 -05:00
parent dac217c98c
commit b5d6126a2d
1 changed files with 10 additions and 0 deletions
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10
Outputs/Speaker/Implementation/LowpassSpeaker.hpp
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@ -60,6 +60,10 @@ template <typename T> class LowpassSpeaker: public Speaker {
// Implemented as per Speaker.
void set_computed_output_rate(float cycles_per_second, int buffer_size) final {
std::lock_guard<std::mutex> lock_guard(filter_parameters_mutex_);
if(filter_parameters_.output_cycles_per_second == cycles_per_second && size_t(buffer_size) == output_buffer_.size()) {
return;
}
filter_parameters_.output_cycles_per_second = cycles_per_second;
filter_parameters_.parameters_are_dirty = true;
output_buffer_.resize(std::size_t(buffer_size));
@ -70,6 +74,9 @@ template <typename T> class LowpassSpeaker: public Speaker {
*/
void set_input_rate(float cycles_per_second) {
std::lock_guard<std::mutex> lock_guard(filter_parameters_mutex_);
if(filter_parameters_.input_cycles_per_second == cycles_per_second) {
return;
}
filter_parameters_.input_cycles_per_second = cycles_per_second;
filter_parameters_.parameters_are_dirty = true;
filter_parameters_.input_rate_changed = true;
@ -83,6 +90,9 @@ template <typename T> class LowpassSpeaker: public Speaker {
*/
void set_high_frequency_cutoff(float high_frequency) {
std::lock_guard<std::mutex> lock_guard(filter_parameters_mutex_);
if(filter_parameters_.high_frequency_cutoff == high_frequency) {
return;
}
filter_parameters_.high_frequency_cutoff = high_frequency;
filter_parameters_.parameters_are_dirty = true;
}