48 Plugin(inputSampleRate),
67 return "percussiononsets";
73 return "Simple Percussion Onset Detector";
79 return "Detect percussive note onsets by identifying broadband energy rises";
85 return "Vamp SDK Example Plugins";
97 return "Code copyright 2006 Queen Mary, University of London, after Dan Barry et al 2005. Freely redistributable (BSD license)";
151 d.
name =
"Energy rise threshold";
152 d.
description =
"Energy rise within a frequency bin necessary to count toward broadband total";
161 d.
name =
"Sensitivity";
162 d.
description =
"Sensitivity of peak detector applied to broadband detection function";
184 if (
id ==
"threshold") {
185 if (value < 0) value = 0;
186 if (value > 20) value = 20;
188 }
else if (
id ==
"sensitivity") {
189 if (value < 0) value = 0;
190 if (value > 100) value = 100;
209 d.
sampleType = OutputDescriptor::VariableSampleRate;
214 d.
name =
"Detection Function";
215 d.
description =
"Broadband energy rise detection function";
219 d.
sampleType = OutputDescriptor::OneSamplePerStep;
230 cerr <<
"ERROR: PercussionOnsetDetector::process: "
231 <<
"PercussionOnsetDetector has not been initialised"
240 float real = inputBuffers[0][i*2];
241 float imag = inputBuffers[0][i*2 + 1];
243 float sqrmag = real * real + imag * imag;
260 detectionFunction.
values.push_back(count);
261 returnFeatures[1].push_back(detectionFunction);
273 returnFeatures[0].push_back(onset);
279 return returnFeatures;
size_t getPreferredStepSize() const
Get the preferred step size (window increment – the distance in sample frames between the start frame...
std::string getMaker() const
Get the name of the author or vendor of the plugin in human-readable form.
float * m_priorMagnitudes
bool initialise(size_t channels, size_t stepSize, size_t blockSize)
Initialise a plugin to prepare it for use with the given number of input channels,...
std::string getDescription() const
Get a human-readable description for the plugin, typically a line of text that may optionally be disp...
OutputList getOutputDescriptors() const
Get the outputs of this plugin.
virtual ~PercussionOnsetDetector()
void reset()
Reset the plugin after use, to prepare it for another clean run.
std::string getName() const
Get a human-readable name or title of the plugin.
PercussionOnsetDetector(float inputSampleRate)
void setParameter(std::string id, float value)
Set a named parameter.
size_t getPreferredBlockSize() const
Get the preferred block size (window size – the number of sample frames passed in each block to the p...
std::string getIdentifier() const
Get the computer-usable name of the plugin.
float getParameter(std::string id) const
Get the value of a named parameter.
std::string getCopyright() const
Get the copyright statement or licensing summary for the plugin.
FeatureSet getRemainingFeatures()
After all blocks have been processed, calculate and return any remaining features derived from the co...
int getPluginVersion() const
Get the version number of the plugin.
FeatureSet process(const float *const *inputBuffers, Vamp::RealTime timestamp)
Process a single block of input data.
ParameterList getParameterDescriptors() const
Get the controllable parameters of this plugin.
std::vector< ParameterDescriptor > ParameterList
virtual size_t getMaxChannelCount() const
Get the maximum supported number of input channels.
std::vector< OutputDescriptor > OutputList
std::map< int, FeatureList > FeatureSet
virtual size_t getMinChannelCount() const
Get the minimum supported number of input channels.
std::string name
The human-readable name of the parameter.
std::string identifier
The name of the parameter, in computer-usable form.
std::string unit
The unit of the parameter, in human-readable form.
std::string description
A human-readable short text describing the parameter.
bool isQuantized
True if the parameter values are quantized to a particular resolution.
float minValue
The minimum value of the parameter.
float maxValue
The maximum value of the parameter.
float defaultValue
The default value of the parameter.
std::vector< float > values
Results for a single sample of this feature.
bool hasTimestamp
True if an output feature has its own timestamp.
RealTime timestamp
Timestamp of the output feature.
SampleType sampleType
Positioning in time of the output results.
bool isQuantized
True if the output values are quantized to a particular resolution.
float quantizeStep
Quantization resolution of the output values (e.g.
std::string unit
The unit of the output, in human-readable form.
std::string name
The human-readable name of the output.
float sampleRate
Sample rate of the output results, as samples per second.
std::string identifier
The name of the output, in computer-usable form.
bool hasKnownExtents
True if the results in each output bin fall within a fixed numeric range (minimum and maximum values)...
bool hasFixedBinCount
True if the output has the same number of values per sample for every output sample.
std::string description
A human-readable short text describing the output.
size_t binCount
The number of values per result of the output.
RealTime represents time values to nanosecond precision with accurate arithmetic and frame-rate conve...
static RealTime frame2RealTime(long frame, unsigned int sampleRate)
Convert a sample frame at the given sample rate into a RealTime.