/usr/include/CLAM/qtmonitors/HistogramViewMonitor.hxx is in libclam-qtmonitors-dev 1.4.0-3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | /*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef HistogramViewMonitor_hxx
#define HistogramViewMonitor_hxx
#include "FloatArrayDataSource.hxx"
#include <CLAM/PortMonitor.hxx>
#include <vector>
/** \brief Histogram view
*
* Useful to plot noise distributions
*/
class HistogramViewMonitor :
public CLAM::AudioPortMonitor,
public CLAM::VM::FloatArrayDataSource
{
public:
HistogramViewMonitor()
: _size(0), _bins(512)
{
_data.resize( _bins );
for(unsigned int i=0;i<_data.size();i++)
_data[i] = 0.;
}
private:
const char* GetClassName() const { return "HistogramView"; };
std::string getLabel(unsigned bin) const
{
static std::string dummyLabel;
return dummyLabel;
}
const CLAM::TData * frameData()
{
const CLAM::Audio &audio = FreezeAndGetData();
const CLAM::Array<CLAM::TData> &inb = audio.GetBuffer();
_size = inb.Size();
if (_size==0) return 0;
for (int i=0; i<audio.GetSize(); i++ )
{
CLAM_ASSERT(fabs(inb[i])<=1., "Input audio is out of range (-1..1)");
//index calculation by integer division
unsigned int index = (inb[i]+1)*32768/(65536/_bins); // if bins=512 and maxValue=65536 => max index 65536/128 = 512 (number of bins)
_data[ index ]++;
}
return &_data[0];
}
void release()
{
UnfreezeData();
}
unsigned nBins() const
{
return _bins;
}
virtual bool hasUpperBound() const { return false; }
virtual bool hasLowerBound() const { return false; }
virtual CLAM::TData upperBound() const {return 1;}
virtual CLAM::TData lowerBound() const {return 0;}
bool isEnabled() const
{
return IsRunning();
}
private:
unsigned _size;
const unsigned _bins; //fixed number of bins. TODO: Add this as a configuration option.
std::vector<CLAM::TData> _data; ///< Data of the histogram
};
#endif// HistogramViewMonitor_hxx
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