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This fixes a couple of issues with AudioUnits and 1 with latency

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If latency was introduced by an effect, the input position could
get offset by the amount of latency, such that the same input
would be processed twice for the number of sample of latency.

There was an issue in AUs where a "latency done" flags wasn't
being reset and so the second and subsequent uses of an effect
could not latency correct.

And in research that, I found that you need to set the sample rate
on all 3 scopes (global, input, and output) instead of just the
global scope.
This commit is contained in:
lllucius@gmail.com 2015-01-11 22:52:08 +00:00
parent dbe7e0280c
commit 85f6279d21
3 changed files with 68 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/effects/Effect.cpp
View File

@ -1003,6 +1003,8 @@ bool Effect::ProcessTrack(int count,
sampleCount outputBufferCnt = 0;
bool cleared = false;
int chans = wxMin(mNumAudioOut, mNumChannels);
WaveTrack *genLeft = NULL;
WaveTrack *genRight = NULL;
sampleCount genLength = 0;
@ -1134,6 +1136,13 @@ bool Effect::ProcessTrack(int count,
inputBufferCnt -= curBlockSize;
}
// "ls" and "rs" serve as the input sample index for the left and
// right channels when processing the input samples. If we flip
// over to processing delayed samples, they simply become counters
// for the progress display.
inLeftPos += curBlockSize;
inRightPos += curBlockSize;
// Get the current number of delayed samples and accumulate
if (isProcessor)
{
@ -1154,22 +1163,22 @@ bool Effect::ProcessTrack(int count,
else if (curDelay > 0)
{
curBlockSize -= curDelay;
for (int i = 0; i < wxMin(mNumAudioOut, mNumChannels); i++)
for (int i = 0; i < chans; i++)
{
memmove(mOutBufPos[i], mOutBufPos[i] + curDelay, SAMPLE_SIZE(floatSample) * curBlockSize);
memmove(mOutBufPos[i], mOutBufPos[i] + curDelay, sizeof(float) * curBlockSize);
}
curDelay = 0;
}
}
//
// Adjust the number of samples in the output buffers
outputBufferCnt += curBlockSize;
//
// Still have room in the output buffers
if (outputBufferCnt < mBufferSize)
{
// Bump to next output buffer position
for (int i = 0; i < wxMin(mNumAudioOut, mNumChannels); i++)
for (int i = 0; i < chans; i++)
{
mOutBufPos[i] += curBlockSize;
}
@ -1196,7 +1205,7 @@ bool Effect::ProcessTrack(int count,
}
// Reset the output buffer positions
for (int i = 0; i < wxMin(mNumAudioOut, mNumChannels); i++)
for (int i = 0; i < chans; i++)
{
mOutBufPos[i] = mOutBuffer[i];
}
@ -1207,13 +1216,6 @@ bool Effect::ProcessTrack(int count,
outputBufferCnt = 0;
}
// "ls" and "rs" serve as the input sample index for the left and
// right channels when processing the input samples. If we flip
// over to processing delayed samples, they simply become counters
// for the progress display.
inLeftPos += curBlockSize;
inRightPos += curBlockSize;
if (mNumChannels > 1)
{
if (TrackGroupProgress(count, (inLeftPos - leftStart) / (double) len))

91
src/effects/audiounits/AudioUnitEffect.cpp
View File

@ -931,8 +931,6 @@ AudioUnitEffect::AudioUnitEffect(const wxString & path,
mUnit = NULL;
mLatency = 0.0;
mTailTime = 0.0;
mBlockSize = 0.0;
mUIHost = NULL;
@ -1140,30 +1138,8 @@ bool AudioUnitEffect::SetHost(EffectHostInterface *host)
SetRateAndChannels();
UInt32 dataSize;
// Retrieve the latency (can be updated via an event)
dataSize = sizeof(mLatency);
mLatency = 0.0;
AudioUnitGetProperty(mUnit,
kAudioUnitProperty_Latency,
kAudioUnitScope_Global,
0,
&mLatency,
&dataSize);
// Retrieve the tail time
dataSize = sizeof(mTailTime);
mTailTime = 0.0;
AudioUnitGetProperty(mUnit,
kAudioUnitProperty_TailTime,
kAudioUnitScope_Global,
0,
&mTailTime,
&dataSize);
// Retrieve the desired number of frames per slice
dataSize = sizeof(mBlockSize);
UInt32 dataSize = sizeof(mBlockSize);
mBlockSize = 512;
AudioUnitGetProperty(mUnit,
kAudioUnitProperty_MaximumFramesPerSlice,
@ -1307,10 +1283,21 @@ sampleCount AudioUnitEffect::GetBlockSize(sampleCount maxBlockSize)
sampleCount AudioUnitEffect::GetLatency()
{
// Retrieve the latency (can be updated via an event)
if (mUseLatency && !mLatencyDone)
{
mLatencyDone = true;
return mLatency * mSampleRate;
Float64 latency = 0.0;
UInt32 dataSize = sizeof(latency);
AudioUnitGetProperty(mUnit,
kAudioUnitProperty_Latency,
kAudioUnitScope_Global,
0,
&latency,
&dataSize);
return (sampleCount) (latency * mSampleRate);
}
return 0;
@ -1318,7 +1305,17 @@ sampleCount AudioUnitEffect::GetLatency()
sampleCount AudioUnitEffect::GetTailSize()
{
return mTailTime * mSampleRate;
// Retrieve the tail time
Float64 tailTime = 0.0;
UInt32 dataSize = sizeof(tailTime);
AudioUnitGetProperty(mUnit,
kAudioUnitProperty_TailTime,
kAudioUnitScope_Global,
0,
&tailTime,
&dataSize);
return (sampleCount) (tailTime * mSampleRate);
}
bool AudioUnitEffect::IsReady()
@ -1374,6 +1371,8 @@ bool AudioUnitEffect::ProcessInitialize()
return false;
}
mLatencyDone = false;
mReady = true;
return true;
@ -2320,6 +2319,30 @@ bool AudioUnitEffect::SetRateAndChannels()
return false;
}
auResult = AudioUnitSetProperty(mUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Input,
0,
&mSampleRate,
sizeof(Float64));
if (auResult != 0)
{
printf("Didn't accept sample rate\n");
return false;
}
auResult = AudioUnitSetProperty(mUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output,
0,
&mSampleRate,
sizeof(Float64));
if (auResult != 0)
{
printf("Didn't accept sample rate\n");
return false;
}
AudioStreamBasicDescription streamFormat = {0};
streamFormat.mSampleRate = mSampleRate;
@ -2481,18 +2504,8 @@ void AudioUnitEffect::EventListener(const AudioUnitEvent *inEvent,
// We're only registered for Latency changes
if (inEvent->mArgument.mProperty.mPropertyID == kAudioUnitProperty_Latency)
{
// Retrieve the latency
UInt32 dataSize = sizeof(mLatency);
mLatency = 0.0;
AudioUnitGetProperty(mUnit,
kAudioUnitProperty_Latency,
kAudioUnitScope_Global,
0,
&mLatency,
&dataSize);
// And allow change to be used
mLatencyDone = false;
// Allow change to be used
//mLatencyDone = false;
}
return;

2
src/effects/audiounits/AudioUnitEffect.h
View File

@ -194,8 +194,6 @@ private:
int mAudioOuts;
bool mInteractive;
bool mLatencyDone;
Float64 mLatency; // in seconds...multiply by samplerate
Float64 mTailTime; // in seconds...multiply by samplerate
UInt32 mBlockSize;
double mSampleRate;