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Demod worker now handles filter reconstruction

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Reduces audio jittering and only generates the last queued filter to
save redundant regeneration during dragging.
This commit is contained in:
Charles J. Cliffe
2014-12-01 02:10:36 -05:00
parent 38b1393c44
commit 746eca8d3e
2 changed files with 35 additions and 42 deletions
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src/demod/DemodulatorWorkerThread.cpp
+5 -4
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@@ -18,7 +18,6 @@ void DemodulatorWorkerThread::threadMain() {
bool filterChanged = false;
DemodulatorWorkerThreadCommand filterCommand;
DemodulatorWorkerThreadCommand command;
DemodulatorWorkerThreadResult result;
bool done = false;
while (!done) {
@@ -33,7 +32,7 @@ void DemodulatorWorkerThread::threadMain() {
}
if (filterChanged) {
result.cmd = DemodulatorWorkerThreadResult::DEMOD_WORKER_THREAD_RESULT_FILTERS;
DemodulatorWorkerThreadResult result(DemodulatorWorkerThreadResult::DEMOD_WORKER_THREAD_RESULT_FILTERS);
result.resample_ratio = (float) (filterCommand.bandwidth) / (float) filterCommand.inputRate;
result.audio_resample_ratio = (float) (filterCommand.audioSampleRate) / (float) filterCommand.bandwidth;
@@ -58,10 +57,12 @@ void DemodulatorWorkerThread::threadMain() {
liquid_firdes_kaiser(h_len, fc, As, mu, h);
result.fir_filter = firfilt_crcf_create(h, h_len);
result.resampler = msresamp_crcf_create(result.resample_ratio, As);
result.audio_resampler = msresamp_crcf_create(result.audio_resample_ratio, As);
// msresamp_crcf_print(audio_resampler);
result.audioSampleRate = filterCommand.audioSampleRate;
result.bandwidth = filterCommand.bandwidth;
result.inputRate = filterCommand.inputRate;
resultQueue->push(result);
}