comicsansg/CubicSDR
comicsansg
/
CubicSDR
mirror of https://github.com/cjcliffe/CubicSDR.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Demod worker now handles filter reconstruction 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
src/demod/DemodulatorThread.cpp
View File

@ -15,9 +15,9 @@ DemodulatorThread::DemodulatorThread(DemodulatorThreadInputQueue* pQueue) :
workerQueue = new DemodulatorThreadWorkerCommandQueue;
workerResults = new DemodulatorThreadWorkerResultQueue;
workerThread = new DemodulatorWorkerThread(workerQueue,workerResults);
workerThread = new DemodulatorWorkerThread(workerQueue, workerResults);
t_Worker = new std::thread(&DemodulatorWorkerThread::threadMain,workerThread);
t_Worker = new std::thread(&DemodulatorWorkerThread::threadMain, workerThread);
}
void DemodulatorThread::initialize() {
@ -113,51 +113,16 @@ void DemodulatorThread::threadMain() {
}
if (bandwidthChanged) {
std::cout << "Requesting new filters from worker.." << std::endl;
DemodulatorWorkerThreadCommand command(DemodulatorWorkerThreadCommand::DEMOD_WORKER_THREAD_CMD_BUILD_FILTERS);
command.audioSampleRate = bandwidthParams.audioSampleRate;
command.bandwidth = bandwidthParams.bandwidth;
command.frequency = bandwidthParams.frequency;
command.inputRate = bandwidthParams.inputRate;
//
workerQueue->push(command);
// params = bandwidthParams;
// initialize();
// while (!inputQueue->empty()) { // catch up
// inputQueue->pop(inp);
// }
}
}
if (!workerResults->empty()) {
while (!workerResults->empty()) {
DemodulatorWorkerThreadResult result;
workerResults->pop(result);
switch (result.cmd) {
case DemodulatorWorkerThreadResult::DEMOD_WORKER_THREAD_RESULT_FILTERS:
std::cout << "New filters arrived from worker.." << std::endl;
firfilt_crcf_destroy(fir_filter);
msresamp_crcf_destroy(resampler);
msresamp_crcf_destroy(audio_resampler);
fir_filter = result.fir_filter;
resampler = result.resampler;
audio_resampler = result.audio_resampler;
resample_ratio = result.resample_ratio;
audio_resample_ratio = result.audio_resample_ratio;
params.audioSampleRate = result.audioSampleRate;
params.bandwidth = result.bandwidth;
params.inputRate = result.inputRate;
break;
}
}
}
if (!initialized) {
continue;
}
@ -246,6 +211,33 @@ void DemodulatorThread::threadMain() {
visOutQueue->push(ati);
}
}
if (!workerResults->empty()) {
while (!workerResults->empty()) {
DemodulatorWorkerThreadResult result;
workerResults->pop(result);
switch (result.cmd) {
case DemodulatorWorkerThreadResult::DEMOD_WORKER_THREAD_RESULT_FILTERS:
firfilt_crcf_destroy(fir_filter);
msresamp_crcf_destroy(resampler);
msresamp_crcf_destroy(audio_resampler);
fir_filter = result.fir_filter;
resampler = result.resampler;
audio_resampler = result.audio_resampler;
resample_ratio = result.resample_ratio;
audio_resample_ratio = result.audio_resample_ratio;
params.audioSampleRate = result.audioSampleRate;
params.bandwidth = result.bandwidth;
params.inputRate = result.inputRate;
break;
}
}
}
}
std::cout << "Demodulator thread done." << std::endl;

9
src/demod/DemodulatorWorkerThread.cpp
View File

@ -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);
}