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/**
* Speex resampling test / information.
*/
#define _USE_MATH_DEFINES
#include <cmath>
#include <QtCore>
#include <ipp.h>
#include <windows.h>
#include "Timer.h"
#define ITER 1000
#include <speex/speex_resampler.h>
int main(int argc, char **argv) {
ippStaticInit();
ippSetNumThreads(1);
#ifdef Q_OS_WIN
if (!SetPriorityClass(GetCurrentProcess(),HIGH_PRIORITY_CLASS))
qWarning("Application: Failed to set priority!");
#endif
QCoreApplication a(argc, argv);
SpeexResamplerState *srs;
int iMicFreq = 44100;
int iSampleRate = 48000;
int iFrameSize = iSampleRate / 100;
int err = 0;
srs = speex_resampler_init(1, iMicFreq, iSampleRate, 3, &err);
int iMicLength = (iFrameSize * iMicFreq) / iSampleRate;
qWarning() << iMicFreq << iSampleRate << iFrameSize << iMicLength;
float *pfInput = new float[iMicLength];
float *pfOutput = new float[iFrameSize];
for (int i=0;i<iMicLength;++i) {
pfInput[i] = sinf((M_PI * i * 20) / iMicLength);
}
for (int i=0;i<iFrameSize;++i)
pfOutput[i] = 0;
qWarning() << "speex resampler latency: " << speex_resampler_get_input_latency(srs);
Timer t;
for (int i=0;i<ITER;++i) {
spx_uint32_t inlen = iMicLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_float(srs, 0, pfInput, &inlen, pfOutput, &outlen);
}
quint64 e = t.elapsed();
qWarning() << "speex us per iteration: " << (e / ITER);
float min = 0.0;
float max = 0.0;
for (int i=0;i<iFrameSize;++i) {
min = qMin(min, pfOutput[i]);
max = qMax(max, pfOutput[i]);
}
qWarning() << "Speex bounds" << min << max;
delete [] pfOutput;
int history=24;
int lastread = history;
double time = history;
int olen = 0;
float *inBuf = ippsMalloc_32f(iMicLength+history*2+2);
ippsZero_32f(inBuf, iMicLength+history*2+2);
pfOutput = ippsMalloc_32f(iFrameSize+2);
for (int i=0;i<iFrameSize;++i)
pfOutput[i] = 0;
IppsResamplingPolyphaseFixed_32f *pSpec = NULL;
ippsResamplePolyphaseFixedInitAlloc_32f(&pSpec, iMicFreq, iSampleRate, 2*history, 0.90f, 8.0f, ippAlgHintFast);
t.restart();
for (int i=0;i<ITER;++i) {
ippsCopy_32f(pfInput, inBuf + history, iMicLength);
ippsResamplePolyphaseFixed_32f(pSpec, inBuf, iMicLength, pfOutput, .99f, &time, &olen);
time -= iMicLength;
ippsMove_32f(inBuf + history, inBuf, history);
}
e = t.elapsed();
qWarning() << "ipp us per iteration: " << (e / ITER);
min = 0.0;
max = 0.0;
for (int i=0;i<iFrameSize;++i) {
min = qMin(min, pfOutput[i]);
max = qMax(max, pfOutput[i]);
}
qWarning() << "IPP bounds" << min << max;
delete [] pfInput;
return 0;
}
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