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Viewing changes to libs/audiographer/audiographer/general/peak_reader.h

  • Committer: Package Import Robot
  • Author(s): Felipe Sateler
  • Date: 2013-09-21 19:05:02 UTC
  • Revision ID: package-import@ubuntu.com-20130921190502-8gsftrku6jnzhd7v
Tags: upstream-3.4~dfsg
Import upstream version 3.4~dfsg

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libs/audiographer/audiographer/general/peak_reader.h
 
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#ifndef AUDIOGRAPHER_PEAK_READER_H
 
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#define AUDIOGRAPHER_PEAK_READER_H
 
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#include "audiographer/sink.h"
 
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#include "audiographer/routines.h"
 
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#include "audiographer/utils/listed_source.h"
 
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namespace AudioGrapher
 
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{
 
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/// A class that reads the maximum value from a stream
 
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class PeakReader : public ListedSource<float>, public Sink<float>
 
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{
 
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  public:
 
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        /// Constructor \n RT safe
 
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        PeakReader() : peak (0.0) {}
 
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        /// Returns the highest absolute of the values found so far. \n RT safe
 
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        float get_peak() { return peak; }
 
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        /// Resets the peak to 0 \n RT safe
 
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        void  reset() { peak = 0.0; }
 
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        /// Finds peaks from the data \n RT safe
 
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        void process (ProcessContext<float> const & c)
 
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        {
 
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                peak = Routines::compute_peak (c.data(), c.frames(), peak);
 
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                ListedSource<float>::output(c);
 
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        }
 
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        using Sink<float>::process;
 
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  private:
 
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        float peak;
 
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};
 
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} // namespace
 
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#endif // AUDIOGRAPHER_PEAK_READER_H