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#include <stdio.h>
#include <unistd.h>
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <string.h>
#include <fftw3.h>
#include <stdint.h>
#include <math.h>
#include <utils.h>
#include <song.h>
#include <immsdb.h>
#include "spectrum.h"
#include "strmanip.h"
#define SCALE 100000.0
using std::cout;
using std::cerr;
using std::endl;
using std::string;
using std::ostringstream;
using std::fstream;
typedef uint16_t sample_t;
int usage()
{
cout << "usage: analyzer <filename>" << endl;
return -1;
}
double infftdata[WINDOWSIZE];
fftw_complex outfftdata[NFREQS];
fftw_plan plan;
int analyze(const string &path)
{
if (access(path.c_str(), R_OK))
{
cerr << "analyzer: Could not open file " << path << endl;
return -4;
}
string epath = rex.replace(path, "'", "'\"'\"'", Regexx::global);
ostringstream command;
command << "nice -n 15 sox \'" << epath << "\' -t .raw -w -u -c 1 -r "
<< SAMPLERATE << " -";
#ifdef DEBUG
cout << "analyzer: Executing: " << command.str() << endl;
#endif
FILE *p = popen(command.str().c_str(), "r");
if (!p)
{
cerr << "analyzer: Could not open pipe!" << endl;
return -2;
}
sample_t indata[WINDOWSIZE];
double outdata[NFREQS];
double maxes[NFREQS];
memset(maxes, 0, sizeof(maxes));
#ifdef DEBUG
StackTimer t;
#endif
int r = fread(indata, sizeof(sample_t), OVERLAP, p);
if (r != OVERLAP)
return -3;
try {
SpectrumAnalyzer analyzer(path);
if (analyzer.is_known())
{
cout << "analyzer: Already analyzed - skipping." << endl;
return 1;
}
while (fread(indata + OVERLAP, sizeof(sample_t), READSIZE, p)
== READSIZE)
{
for (int i = 0; i < WINDOWSIZE; ++i)
infftdata[i] = (double)indata[i];
fftw_execute(plan);
for (int i = 0; i < NFREQS; ++i)
{
outdata[i] = sqrt(pow(outfftdata[i][0] / SCALE, 2)
+ pow(outfftdata[i][1] / SCALE, 2));
if (outdata[i] > maxes[i])
maxes[i] = outdata[i];
}
analyzer.integrate_spectrum(outdata);
memmove(indata, indata + READSIZE, OVERLAP * sizeof(sample_t));
}
}
catch (std::string &s) { cerr << s << endl; }
pclose(p);
return 0;
}
int main(int argc, char *argv[])
{
if (argc < 2)
return usage();
StackLockFile lock(get_imms_root() + ".analyzer_lock");
if (!lock.isok())
{
cerr << "analyzer: Another instance already active - exiting." << endl;
return -7;
}
nice(15);
bool shouldexport = true;
FILE *wisdom = fopen(get_imms_root(".fftw_wisdom").c_str(), "r");
if (wisdom)
{
shouldexport = !fftw_import_wisdom_from_file(wisdom);
fclose(wisdom);
}
else
cerr << "analyzer: Growing wiser. This may take a while." << endl;
plan = fftw_plan_dft_r2c_1d(WINDOWSIZE, infftdata, outfftdata,
FFTW_MEASURE | FFTW_PATIENT | FFTW_EXHAUSTIVE);
if (shouldexport)
{
FILE *wisdom = fopen(get_imms_root(".fftw_wisdom").c_str(), "w");
if (wisdom)
{
fftw_export_wisdom_to_file(wisdom);
fclose(wisdom);
}
else
cerr << "analyzer: Could not write to wisdom file!" << endl;
}
ImmsDb immsdb;
for (int i = 1; i < argc; ++i)
analyze(path_normalize(argv[i]));
fftw_destroy_plan(plan);
}
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