ardour/livetrax
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hack AudioAnalyzer for VAMP Onsetdetect

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This works around a bug in OnsetDetector.
It requests a buffer of 1114 samples but later FFT
bails out if the buffer size is not a power-of-two.
Also large buffersizes fail.

Work-around: use ADAPT_ALL_SAFE (no buffersize
adapter), use a reasonably small buffersize.
The current settings work, even though it produces
the following warnings (vamp-plugins/OnsetDetect.cpp)

WARNING: OnsetDetector::initialise: Possibly sub-optimal step size for this sample rate: 512 (wanted 557)
WARNING: OnsetDetector::initialise: Possibly sub-optimal block size for this sample rate: 1024 (wanted 1114)

This commit should be reverted once VAMP/QM/aubio
is updated/fixed.
This commit is contained in:
Robin Gareus 2015-03-30 11:29:31 +02:00 committed by Paul Davis
parent d1d266696b
commit 6888436416
1 changed files with 3 additions and 3 deletions
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6
libs/ardour/audioanalyser.cc
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@ -64,7 +64,7 @@ AudioAnalyser::initialize_plugin (AnalysisPluginKey key, float sr)
PluginLoader* loader (PluginLoader::getInstance());
plugin = loader->loadPlugin (key, sr, PluginLoader::ADAPT_ALL);
plugin = loader->loadPlugin (key, sr, PluginLoader::ADAPT_ALL_SAFE);
if (!plugin) {
error << string_compose (_("VAMP Plugin \"%1\" could not be loaded"), key) << endmsg;
@ -75,8 +75,8 @@ AudioAnalyser::initialize_plugin (AnalysisPluginKey key, float sr)
something that makes for efficient disk i/o
*/
bufsize = 65536;
stepsize = bufsize;
bufsize = 1024;
stepsize = 512;
if (plugin->getMinChannelCount() > 1) {
delete plugin;