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Possibility to calculate resample ratio per channel in adapter #859

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Possibility to calculate resample ratio per channel in adapter #859

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126 changes: 98 additions & 28 deletions common/JackAudioAdapterInterface.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -67,8 +67,8 @@ namespace Jack
fprintf(file, "set xlabel \"audio cycles\"\n");
fprintf(file, "set ylabel \"frames\"\n");
fprintf(file, "plot ");
fprintf(file, "\"JackAudioAdapter.log\" using 2 title \"Ringbuffer error\" with lines,");
fprintf(file, "\"JackAudioAdapter.log\" using 3 title \"Ringbuffer error with timing correction\" with lines");
fprintf(file, "\"JackAudioAdapter.log\" using 2 title \"Ringbuffer error\" with dots,");
fprintf(file, "\"JackAudioAdapter.log\" using 3 title \"Ringbuffer error with timing correction\" with dots");

fprintf(file, "\n unset multiplot\n");
fprintf(file, "set output 'AdapterTiming1.svg\n");
Expand All @@ -81,8 +81,8 @@ namespace Jack
fprintf(file, "set xlabel \"audio cycles\"\n");
fprintf(file, "set ylabel \"frames\"\n");
fprintf(file, "plot ");
fprintf(file, "\"JackAudioAdapter.log\" using 2 title \"Consumer interrupt period\" with lines,");
fprintf(file, "\"JackAudioAdapter.log\" using 3 title \"Producer interrupt period\" with lines\n");
fprintf(file, "\"JackAudioAdapter.log\" using 2 title \"Consumer interrupt period\" with dots,");
fprintf(file, "\"JackAudioAdapter.log\" using 3 title \"Producer interrupt period\" with dots\n");
fprintf(file, "unset multiplot\n");
fprintf(file, "unset output\n");

Expand All @@ -97,8 +97,8 @@ namespace Jack
fprintf(file, "set xlabel \"audio cycles\"\n");
fprintf(file, "set ylabel \"resampling ratio\"\n");
fprintf(file, "plot ");
fprintf(file, "\"JackAudioAdapter.log\" using 4 title \"Ratio 1\" with lines,");
fprintf(file, "\"JackAudioAdapter.log\" using 5 title \"Ratio 2\" with lines");
fprintf(file, "\"JackAudioAdapter.log\" using 4 title \"Ratio 1\" with dots,");
fprintf(file, "\"JackAudioAdapter.log\" using 5 title \"Ratio 2\" with dots");

fprintf(file, "\n unset multiplot\n");
fprintf(file, "set output 'AdapterTiming2.svg\n");
Expand All @@ -111,8 +111,8 @@ namespace Jack
fprintf(file, "set xlabel \"audio cycles\"\n");
fprintf(file, "set ylabel \"resampling ratio\"\n");
fprintf(file, "plot ");
fprintf(file, "\"JackAudioAdapter.log\" using 4 title \"Ratio 1\" with lines,");
fprintf(file, "\"JackAudioAdapter.log\" using 5 title \"Ratio 2\" with lines\n");
fprintf(file, "\"JackAudioAdapter.log\" using 4 title \"Ratio 1\" with dots,");
fprintf(file, "\"JackAudioAdapter.log\" using 5 title \"Ratio 2\" with dots\n");
fprintf(file, "unset multiplot\n");
fprintf(file, "unset output\n");

Expand All @@ -127,8 +127,8 @@ namespace Jack
fprintf(file, "set xlabel \"audio cycles\"\n");
fprintf(file, "set ylabel \"frames\"\n");
fprintf(file, "plot ");
fprintf(file, "\"JackAudioAdapter.log\" using 6 title \"Frames position in consumer ringbuffer\" with lines,");
fprintf(file, "\"JackAudioAdapter.log\" using 7 title \"Frames position in producer ringbuffer\" with lines");
fprintf(file, "\"JackAudioAdapter.log\" using 6 title \"Frames position in consumer ringbuffer\" with dots,");
fprintf(file, "\"JackAudioAdapter.log\" using 7 title \"Frames position in producer ringbuffer\" with dots");

fprintf(file, "\n unset multiplot\n");
fprintf(file, "set output 'AdapterTiming3.svg\n");
Expand All @@ -141,8 +141,8 @@ namespace Jack
fprintf(file, "set xlabel \"audio cycles\"\n");
fprintf(file, "set ylabel \"frames\"\n");
fprintf(file, "plot ");
fprintf(file, "\"JackAudioAdapter.log\" using 6 title \"Frames position in consumer ringbuffer\" with lines,");
fprintf(file, "\"JackAudioAdapter.log\" using 7 title \"Frames position in producer ringbuffer\" with lines\n");
fprintf(file, "\"JackAudioAdapter.log\" using 6 title \"Frames position in consumer ringbuffer\" with dots,");
fprintf(file, "\"JackAudioAdapter.log\" using 7 title \"Frames position in producer ringbuffer\" with dots\n");
fprintf(file, "unset multiplot\n");
fprintf(file, "unset output\n");

Expand Down Expand Up @@ -173,9 +173,11 @@ namespace Jack

for (int i = 0; i < fCaptureChannels; i++) {
fCaptureRingBuffer[i]->Reset(fRingbufferCurSize);
fPIControllerCapture[i]->Reset();
}
for (int i = 0; i < fPlaybackChannels; i++) {
fPlaybackRingBuffer[i]->Reset(fRingbufferCurSize);
fPIControllerPlayback[i]->Reset();
}
}

Expand All @@ -191,9 +193,11 @@ namespace Jack
#else
void JackAudioAdapterInterface::Create()
{
//ringbuffers
fCaptureRingBuffer = new JackResampler*[fCaptureChannels];
fPIControllerCapture = new JackPIController*[fCaptureChannels];

fPlaybackRingBuffer = new JackResampler*[fPlaybackChannels];
fPIControllerPlayback = new JackPIController*[fPlaybackChannels];

if (fAdaptative) {
AdaptRingBufferSize();
Expand All @@ -205,13 +209,22 @@ namespace Jack
jack_info("Fixed ringbuffer size = %d frames", fRingbufferCurSize);
}

if (fResampleRatioPerChannel){
jack_info("Resample ratio tracked independently for each capture and playback channel");
} else {
jack_info("Shared resample ratio tracking for all capture and playback channels");
}


for (int i = 0; i < fCaptureChannels; i++ ) {
fCaptureRingBuffer[i] = new JackLibSampleRateResampler(fQuality);
fCaptureRingBuffer[i]->Reset(fRingbufferCurSize);
fPIControllerCapture[i] = new JackPIController(double(fHostSampleRate) / double(fAdaptedSampleRate));
}
for (int i = 0; i < fPlaybackChannels; i++ ) {
fPlaybackRingBuffer[i] = new JackLibSampleRateResampler(fQuality);
fPlaybackRingBuffer[i]->Reset(fRingbufferCurSize);
fPIControllerPlayback[i] = new JackPIController(double(fHostSampleRate) / double(fAdaptedSampleRate));
}

if (fCaptureChannels > 0) {
Expand All @@ -227,40 +240,79 @@ namespace Jack
{
for (int i = 0; i < fCaptureChannels; i++) {
delete(fCaptureRingBuffer[i]);
delete(fPIControllerCapture[i]);
}
for (int i = 0; i < fPlaybackChannels; i++) {
delete (fPlaybackRingBuffer[i]);
delete(fPIControllerPlayback[i]);
}

delete[] fCaptureRingBuffer;
delete [] fPIControllerCapture;
delete[] fPlaybackRingBuffer;
delete [] fPIControllerPlayback;
}

double JackAudioAdapterInterface::GetSharedRatio(int delta_frames)
{
if (0 < fCaptureChannels) {
return fPIControllerCapture[0]->GetRatio(fCaptureRingBuffer[0]->GetReadBalance() - delta_frames);
}
else if (0 < fPlaybackChannels) {
return fPIControllerPlayback[0]->GetRatio(fPlaybackRingBuffer[0]->GetReadBalance() - delta_frames);
}
return 1;
}

int JackAudioAdapterInterface::PushAndPull(float** inputBuffer, float** outputBuffer, unsigned int frames)
{
// Most of the time we can use a shared ratio calculated on a single input or output channel ringbuffer and apply this ratio also to all other channels.
// In some situations we see that there is a drift between the channels coming from or going to the same device.
// On those devices we need to activate the fResampleRatioPerChannel option so that every channel will calculate and keep track of its own resample ratio
// in order to keep his ringbuffer in a good balance which is half used for reading and half used for writing.
// Not using this option when it is needed will result in buffer errors followed by resets for all the buffers.
// cfr. https://github.com/jackaudio/jack2/issues/534

bool failure = false;
fRunning = true;

// Finer estimation of the position in the ringbuffer
int delta_frames = (fPullAndPushTime > 0) ? (int)((float(long(GetMicroSeconds() - fPullAndPushTime)) * float(fAdaptedSampleRate)) / 1000000.f) : 0;

double ratio = 1;

// TODO : done like this just to avoid crash when input only or output only...
if (fCaptureChannels > 0) {
ratio = fPIControler.GetRatio(fCaptureRingBuffer[0]->GetError() - delta_frames);
} else if (fPlaybackChannels > 0) {
ratio = fPIControler.GetRatio(fPlaybackRingBuffer[0]->GetError() - delta_frames);
double ratioC[fCaptureChannels];
double ratioP[fPlaybackChannels];
if(!fResampleRatioPerChannel) {
double shared_ratio = GetSharedRatio(delta_frames);
for (int i = 0; i < fCaptureChannels; i++) {
ratioC[i] = shared_ratio;
}
for (int i = 0; i < fPlaybackChannels; i++) {
ratioP[i] = shared_ratio;
}
#ifdef JACK_MONITOR
if (fCaptureRingBuffer && fCaptureRingBuffer[0] != NULL) {
fTable.Write(fCaptureRingBuffer[0]->GetReadBalance(), fCaptureRingBuffer[0]->GetReadBalance() - delta_frames, shared_ratio, 1/shared_ratio, fCaptureRingBuffer[0]->ReadSpace(), fCaptureRingBuffer[0]->ReadSpace());
}
#endif // JACK_MONITOR
}
else {
for (int i = 0; i < fCaptureChannels; i++) {
ratioC[i] = fPIControllerCapture[i]->GetRatio(fCaptureRingBuffer[i]->GetReadBalance() - delta_frames);
}
for (int i = 0; i < fPlaybackChannels; i++) {
ratioP[i] = fPIControllerPlayback[i]->GetRatio(fPlaybackRingBuffer[i]->GetWriteBalance() + delta_frames);
}
#ifdef JACK_MONITOR
if (fCaptureRingBuffer && fCaptureRingBuffer[0] != NULL) {
fTable.Write(fCaptureRingBuffer[0]->GetReadBalance(), fCaptureRingBuffer[0]->GetReadBalance() - delta_frames, ratioC[0], 1/ratioC[0], fCaptureRingBuffer[0]->ReadSpace(), fCaptureRingBuffer[0]->ReadSpace());
}
#endif // JACK_MONITOR
}

#ifdef JACK_MONITOR
if (fCaptureRingBuffer && fCaptureRingBuffer[0] != NULL)
fTable.Write(fCaptureRingBuffer[0]->GetError(), fCaptureRingBuffer[0]->GetError() - delta_frames, ratio, 1/ratio, fCaptureRingBuffer[0]->ReadSpace(), fCaptureRingBuffer[0]->ReadSpace());
#endif

// Push/pull from ringbuffer
for (int i = 0; i < fCaptureChannels; i++) {
fCaptureRingBuffer[i]->SetRatio(ratio);
fCaptureRingBuffer[i]->SetRatio(ratioC[i]);
if (inputBuffer[i]) {
if (fCaptureRingBuffer[i]->WriteResample(inputBuffer[i], frames) < frames) {
failure = true;
Expand All @@ -269,7 +321,7 @@ namespace Jack
}

for (int i = 0; i < fPlaybackChannels; i++) {
fPlaybackRingBuffer[i]->SetRatio(1/ratio);
fPlaybackRingBuffer[i]->SetRatio(1 / ratioP[i]);
if (outputBuffer[i]) {
if (fPlaybackRingBuffer[i]->ReadResample(outputBuffer[i], frames) < frames) {
failure = true;
Expand Down Expand Up @@ -347,14 +399,32 @@ namespace Jack
int JackAudioAdapterInterface::SetHostSampleRate(jack_nframes_t sample_rate)
{
fHostSampleRate = sample_rate;
fPIControler.Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
if (NULL != fPIControllerCapture) {
for (int i = 0; i < fCaptureChannels; i++) {
fPIControllerCapture[i]->Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
}
}
if (NULL != fPIControllerPlayback) {
for (int i = 0; i < fPlaybackChannels; i++) {
fPIControllerPlayback[i]->Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
}
}
return 0;
}

int JackAudioAdapterInterface::SetAdaptedSampleRate(jack_nframes_t sample_rate)
{
fAdaptedSampleRate = sample_rate;
fPIControler.Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
if (NULL != fPIControllerCapture) {
for (int i = 0; i < fCaptureChannels; i++) {
fPIControllerCapture[i]->Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
}
}
if (NULL != fPIControllerPlayback) {
for (int i = 0; i < fPlaybackChannels; i++ ) {
fPIControllerPlayback[i]->Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
}
}
return 0;
}

Expand Down
19 changes: 12 additions & 7 deletions common/JackAudioAdapterInterface.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -82,9 +82,9 @@ namespace Jack
jack_nframes_t fAdaptedBufferSize;
jack_nframes_t fAdaptedSampleRate;

//PI controller
JackPIControler fPIControler;

//PI controler
JackPIController** fPIControllerCapture;
JackPIController** fPIControllerPlayback;
JackResampler** fCaptureRingBuffer;
JackResampler** fPlaybackRingBuffer;

Expand All @@ -94,6 +94,7 @@ namespace Jack

bool fRunning;
bool fAdaptative;
bool fResampleRatioPerChannel;

void ResetRingBuffers();
void AdaptRingBufferSize();
Expand All @@ -108,13 +109,14 @@ namespace Jack
fHostSampleRate(sample_rate),
fAdaptedBufferSize(buffer_size),
fAdaptedSampleRate(sample_rate),
fPIControler(sample_rate / sample_rate, 256),
fPIControllerCapture(NULL), fPIControllerPlayback(NULL),
fCaptureRingBuffer(NULL), fPlaybackRingBuffer(NULL),
fQuality(0),
fRingbufferCurSize(ring_buffer_size),
fPullAndPushTime(0),
fRunning(false),
fAdaptative(true)
fAdaptative(true),
fResampleRatioPerChannel(false)
{}

JackAudioAdapterInterface(jack_nframes_t host_buffer_size,
Expand All @@ -128,12 +130,14 @@ namespace Jack
fHostSampleRate(host_sample_rate),
fAdaptedBufferSize(adapted_buffer_size),
fAdaptedSampleRate(adapted_sample_rate),
fPIControler(host_sample_rate / host_sample_rate, 256),
fPIControllerCapture(NULL), fPIControllerPlayback(NULL),
fCaptureRingBuffer(NULL), fPlaybackRingBuffer(NULL),
fQuality(0),
fRingbufferCurSize(ring_buffer_size),
fPullAndPushTime(0),
fRunning(false),
fAdaptative(true)
fAdaptative(true),
fResampleRatioPerChannel(false)
{}

virtual ~JackAudioAdapterInterface()
Expand Down Expand Up @@ -168,6 +172,7 @@ namespace Jack
virtual int GetInputLatency(int port_index) { return 0; }
virtual int GetOutputLatency(int port_index) { return 0; }

double GetSharedRatio(int delta_frames);
int PushAndPull(jack_default_audio_sample_t** inputBuffer, jack_default_audio_sample_t** outputBuffer, unsigned int frames);
int PullAndPush(jack_default_audio_sample_t** inputBuffer, jack_default_audio_sample_t** outputBuffer, unsigned int frames);

Expand Down
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