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pesqmain.c
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pesqmain.c
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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "pesq.h"
#include "dsp.h"
#include "mex.h"
#include "matrix.h"
// #define ITU_RESULTS_FILE "pesq_results.txt"
extern int Nb;
double compute(int argc, char **argv ,
float* reference, int ref_len, float* degraded, int deg_len);
void usage (void);
void pesq_measure (SIGNAL_INFO * ref_info, SIGNAL_INFO * deg_info,
ERROR_INFO * err_info, long * Error_Flag, char ** Error_Type);
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]){
//Entry point code goes here
float* reference_signal;
float* degraded_signal;
size_t refLen, degLen;
double res = 0.0;
int i=1;
int argc = nrhs + 1;
char **argv = (char**) mxMalloc(argc * sizeof(char*));
argv[0] = mxMalloc( sizeof("pesq") );
strcpy(argv[0], "pesq");
for (i=1; i<(argc-2); i++) {
argv[i] = mxMalloc( mxGetN(prhs[i-1]) + 1 );
argv[i] = mxArrayToString(prhs[i-1]);
}
i = (argc-2);
argv[i] = mxMalloc( 1 );
argv[i] = "v";
reference_signal = (float *)mxGetData(prhs[i-1]);
refLen = mxGetNumberOfElements(prhs[i-1]);
i = (argc-1);
argv[i] = mxMalloc( 1 );
argv[i] = "v";
degraded_signal = (float *)mxGetData(prhs[i-1]);
degLen = mxGetNumberOfElements(prhs[i-1]);
// the dummy path "v",
// is useless placeholder to take place of orginal path
res = compute(argc, argv,
reference_signal, refLen,
degraded_signal, degLen);
nlhs = 1;
plhs[0] = mxCreateDoubleScalar(res);
for (i=0; i<(argc-2); i++) {
mxFree(argv[i]);
}
}
void usage (void) {
printf ("Usage:\n");
printf (" PESQ HELP Displays this text\n");
printf (" PESQ [options] ref deg\n");
printf (" Run model on reference ref and degraded deg\n");
printf ("\n");
printf ("Options: +8000 +16000 +swap +wb\n");
printf (" Sample rate - No default. Must select either +8000 or +16000.\n");
printf (" Swap byte order - machine native format by default. Select +swap for byteswap.\n");
printf (" Default mode of operation is P.862 (narrowband handset listening). Select +wb \n");
printf (" to use P.862.2 wideband extension (headphone listening).\n");
printf ("\n");
printf ("File names may not begin with a + character.\n");
printf ("\n");
printf ("Files with names ending .wav or .WAV are assumed to have a 44-byte header, which");
printf (" is automatically skipped. All other file types are assumed to have no header.\n");
}
double compute(int argc, char **argv,
float* reference, int ref_len, float* degraded, int deg_len){
int arg;
int names = 0;
long sample_rate = -1;
SIGNAL_INFO ref_info;
SIGNAL_INFO deg_info;
ERROR_INFO err_info;
long Error_Flag = 0;
char * Error_Type = "Unknown error type.";
if (Error_Flag == 0) {
printf("\n");
printf("Perceptual Evaluation of Speech Quality (PESQ)\n");
printf("\n");
if (argc < 3){
usage ();
return 0;
} else {
strcpy (ref_info.path_name, "");
ref_info.apply_swap = 0;
strcpy (deg_info.path_name, "");
deg_info.apply_swap = 0;
ref_info.input_filter = 1;
deg_info.input_filter = 1;
err_info.mode = NB_MODE;
for (arg = 1; arg < argc; arg++) {
if (argv [arg] [0] == '+') {
if (strcmp (argv [arg], "+swap") == 0) {
ref_info.apply_swap = 1;
deg_info.apply_swap = 1;
} else if (strcmp (argv [arg], "+wb") == 0) {
ref_info.input_filter = 2;
deg_info.input_filter = 2;
err_info.mode = WB_MODE;
} else {
if (strcmp (argv [arg], "+16000") == 0) {
sample_rate = 16000L;
} else {
if (strcmp (argv [arg], "+8000") == 0) {
sample_rate = 8000L;
} else {
usage ();
fprintf (stderr, "Invalid parameter '%s'.\n", argv [arg]);
return 1;
}
}
}
} else {
switch (names) {
case 0:
strcpy (ref_info.path_name, argv [arg]);
break;
case 1:
strcpy (deg_info.path_name, argv [arg]);
break;
default:
usage ();
fprintf (stderr, "Invalid parameter '%s'.\n", argv [arg]);
return 1;
}
names++;
}
}
if (sample_rate == -1) {
printf ("PESQ Error. Must specify either +8000 or +16000 sample frequency option!\n");
exit (1);
}
if (sample_rate == 8000L && err_info.mode == WB_MODE ) {
printf ("PESQ Error. P.862.2 operation must use 16kHz sample rate\n");
exit (1);
}
strcpy (ref_info. file_name, ref_info. path_name);
if (strrchr (ref_info. file_name, '\\') != NULL) {
strcpy (ref_info. file_name, 1 + strrchr (ref_info. file_name, '\\'));
}
if (strrchr (ref_info. file_name, '/') != NULL) {
strcpy (ref_info. file_name, 1 + strrchr (ref_info. file_name, '/'));
}
strcpy (deg_info. file_name, deg_info. path_name);
if (strrchr (deg_info. file_name, '\\') != NULL) {
strcpy (deg_info. file_name, 1 + strrchr (deg_info. file_name, '\\'));
}
if (strrchr (deg_info. file_name, '/') != NULL) {
strcpy (deg_info. file_name, 1 + strrchr (deg_info. file_name, '/'));
}
select_rate(sample_rate, &Error_Flag, &Error_Type);
ref_info.data = reference;
ref_info.Nsamples = ref_len;
deg_info.data = degraded;
deg_info.Nsamples = deg_len;
pesq_measure (&ref_info, °_info, &err_info, &Error_Flag, &Error_Type);
}
}
if (Error_Flag == 0) {
if ( err_info.mode == NB_MODE )
printf ("\nP.862 Prediction (Raw MOS, MOS-LQO): = %.3f\t%.3f\n", (double) err_info.pesq_mos,
(double) err_info.mapped_mos);
else
printf ("\nP.862.2 Prediction (MOS-LQO): = %.3f\n", (double) err_info.mapped_mos);
return err_info.mapped_mos;
} else {
printf ("An error of type %d ", Error_Flag);
if (Error_Type != NULL) {
printf (" (%s) occurred during processing.\n", Error_Type);
} else {
printf ("occurred during processing.\n");
}
return 0;
}
}
double align_filter_dB [26] [2] = {{0.,-500},
{50., -500},
{100., -500},
{125., -500},
{160., -500},
{200., -500},
{250., -500},
{300., -500},
{350., 0},
{400., 0},
{500., 0},
{600., 0},
{630., 0},
{800., 0},
{1000., 0},
{1250., 0},
{1600., 0},
{2000., 0},
{2500., 0},
{3000., 0},
{3250., 0},
{3500., -500},
{4000., -500},
{5000., -500},
{6300., -500},
{8000., -500}};
double standard_IRS_filter_dB [26] [2] = {{ 0., -200},
{ 50., -40},
{100., -20},
{125., -12},
{160., -6},
{200., 0},
{250., 4},
{300., 6},
{350., 8},
{400., 10},
{500., 11},
{600., 12},
{700., 12},
{800., 12},
{1000., 12},
{1300., 12},
{1600., 12},
{2000., 12},
{2500., 12},
{3000., 12},
{3250., 12},
{3500., 4},
{4000., -200},
{5000., -200},
{6300., -200},
{8000., -200}};
#define TARGET_AVG_POWER 1E7
void fix_power_level (SIGNAL_INFO *info, char *name, long maxNsamples)
{
long n = info-> Nsamples;
long i;
float *align_filtered = (float *) safe_malloc ((n + DATAPADDING_MSECS * (Fs / 1000)) * sizeof (float));
float global_scale;
float power_above_300Hz;
for (i = 0; i < n + DATAPADDING_MSECS * (Fs / 1000); i++) {
align_filtered [i] = info-> data [i];
}
apply_filter (align_filtered, info-> Nsamples, 26, align_filter_dB);
power_above_300Hz = (float) pow_of (align_filtered,
SEARCHBUFFER * Downsample,
n - SEARCHBUFFER * Downsample + DATAPADDING_MSECS * (Fs / 1000),
maxNsamples - 2 * SEARCHBUFFER * Downsample + DATAPADDING_MSECS * (Fs / 1000));
global_scale = (float) sqrt (TARGET_AVG_POWER / power_above_300Hz);
for (i = 0; i < n; i++) {
info-> data [i] *= global_scale;
}
safe_free (align_filtered);
}
long WB_InIIR_Nsos;
float * WB_InIIR_Hsos;
long WB_InIIR_Nsos_8k = 1L;
float WB_InIIR_Hsos_8k[LINIIR] = {
2.6657628f, -5.3315255f, 2.6657628f, -1.8890331f, 0.89487434f };
long WB_InIIR_Nsos_16k = 1L;
float WB_InIIR_Hsos_16k[LINIIR] = {
2.740826f, -5.4816519f, 2.740826f, -1.9444777f, 0.94597794f };
void pesq_measure (SIGNAL_INFO * ref_info, SIGNAL_INFO * deg_info,
ERROR_INFO * err_info, long * Error_Flag, char ** Error_Type)
{
float * ftmp = NULL;
//ref_info-> data = NULL;
ref_info-> VAD = NULL;
ref_info-> logVAD = NULL;
//deg_info-> data = NULL;
deg_info-> VAD = NULL;
deg_info-> logVAD = NULL;
if ((*Error_Flag) == 0)
{
// printf ("Reading reference file %s...", ref_info-> path_name);
load_src (Error_Flag, Error_Type, ref_info);
if ((*Error_Flag) == 0)
printf ("done.\n");
}
if ((*Error_Flag) == 0)
{
// printf ("Reading degraded file %s...", deg_info-> path_name);
load_src (Error_Flag, Error_Type, deg_info);
if ((*Error_Flag) == 0)
printf ("done.\n");
}
if (((ref_info-> Nsamples - 2 * SEARCHBUFFER * Downsample < Fs / 4) ||
(deg_info-> Nsamples - 2 * SEARCHBUFFER * Downsample < Fs / 4)) &&
((*Error_Flag) == 0))
{
(*Error_Flag) = 2;
(*Error_Type) = "Reference or Degraded below 1/4 second - processing stopped ";
}
if ((*Error_Flag) == 0)
{
alloc_other (ref_info, deg_info, Error_Flag, Error_Type, &ftmp);
}
if ((*Error_Flag) == 0)
{
int maxNsamples = max (ref_info-> Nsamples, deg_info-> Nsamples);
float * model_ref;
float * model_deg;
long i;
FILE *resultsFile;
printf (" Level normalization...\n");
fix_power_level (ref_info, "reference", maxNsamples);
fix_power_level (deg_info, "degraded", maxNsamples);
printf (" IRS filtering...\n");
if( Fs == 16000 ) {
WB_InIIR_Nsos = WB_InIIR_Nsos_16k;
WB_InIIR_Hsos = WB_InIIR_Hsos_16k;
} else {
WB_InIIR_Nsos = WB_InIIR_Nsos_8k;
WB_InIIR_Hsos = WB_InIIR_Hsos_8k;
}
if( ref_info->input_filter == 1 ) {
apply_filter (ref_info-> data, ref_info-> Nsamples, 26, standard_IRS_filter_dB);
} else {
for( i = 0; i < 16; i++ ) {
ref_info->data[SEARCHBUFFER * Downsample + i - 1]
*= (float)i / 16.0f;
ref_info->data[ref_info->Nsamples - SEARCHBUFFER * Downsample - i]
*= (float)i / 16.0f;
}
IIRFilt( WB_InIIR_Hsos, WB_InIIR_Nsos, NULL,
ref_info->data + SEARCHBUFFER * Downsample,
ref_info->Nsamples - 2 * SEARCHBUFFER * Downsample, NULL );
}
if( deg_info->input_filter == 1 ) {
apply_filter (deg_info-> data, deg_info-> Nsamples, 26, standard_IRS_filter_dB);
} else {
for( i = 0; i < 16; i++ ) {
deg_info->data[SEARCHBUFFER * Downsample + i - 1]
*= (float)i / 16.0f;
deg_info->data[deg_info->Nsamples - SEARCHBUFFER * Downsample - i]
*= (float)i / 16.0f;
}
IIRFilt( WB_InIIR_Hsos, WB_InIIR_Nsos, NULL,
deg_info->data + SEARCHBUFFER * Downsample,
deg_info->Nsamples - 2 * SEARCHBUFFER * Downsample, NULL );
}
model_ref = (float *) safe_malloc ((ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000)) * sizeof (float));
model_deg = (float *) safe_malloc ((deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000)) * sizeof (float));
for (i = 0; i < ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
model_ref [i] = ref_info-> data [i];
}
for (i = 0; i < deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
model_deg [i] = deg_info-> data [i];
}
input_filter( ref_info, deg_info, ftmp );
printf (" Variable delay compensation...\n");
calc_VAD (ref_info);
calc_VAD (deg_info);
crude_align (ref_info, deg_info, err_info, WHOLE_SIGNAL, ftmp);
utterance_locate (ref_info, deg_info, err_info, ftmp);
for (i = 0; i < ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
ref_info-> data [i] = model_ref [i];
}
for (i = 0; i < deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
deg_info-> data [i] = model_deg [i];
}
safe_free (model_ref);
safe_free (model_deg);
if ((*Error_Flag) == 0) {
if (ref_info-> Nsamples < deg_info-> Nsamples) {
float *new_ref = (float *) safe_malloc((deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000)) * sizeof(float));
long i;
for (i = 0; i < ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
new_ref [i] = ref_info-> data [i];
}
for (i = ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000);
i < deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
new_ref [i] = 0.0f;
}
safe_free (ref_info-> data);
ref_info-> data = new_ref;
new_ref = NULL;
} else {
if (ref_info-> Nsamples > deg_info-> Nsamples) {
float *new_deg = (float *) safe_malloc((ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000)) * sizeof(float));
long i;
for (i = 0; i < deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
new_deg [i] = deg_info-> data [i];
}
for (i = deg_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000);
i < ref_info-> Nsamples + DATAPADDING_MSECS * (Fs / 1000); i++) {
new_deg [i] = 0.0f;
}
safe_free (deg_info-> data);
deg_info-> data = new_deg;
new_deg = NULL;
}
}
}
printf (" Acoustic model processing...\n");
pesq_psychoacoustic_model (ref_info, deg_info, err_info, ftmp);
safe_free (ref_info-> data);
safe_free (ref_info-> VAD);
safe_free (ref_info-> logVAD);
safe_free (deg_info-> data);
safe_free (deg_info-> VAD);
safe_free (deg_info-> logVAD);
safe_free (ftmp);
if ( err_info->mode == NB_MODE ) // narrow band
{
err_info->mapped_mos = 0.999f+4.0f/(1.0f+(float)exp((-1.4945f*err_info->pesq_mos+4.6607f)));
}
else // wide band
{
err_info->mapped_mos = 0.999f+4.0f/(1.0f+(float)exp((-1.3669f*err_info->pesq_mos+3.8224f)));
err_info->pesq_mos = -1.0;
}
// resultsFile = fopen (ITU_RESULTS_FILE, "at");
//
// if (resultsFile != NULL) {
// long start, end;
//
// if (0 != fseek (resultsFile, 0, SEEK_SET)) {
// printf ("Could not move to start of results file %s!\n", ITU_RESULTS_FILE);
// exit (1);
// }
// start = ftell (resultsFile);
//
// if (0 != fseek (resultsFile, 0, SEEK_END)) {
// printf ("Could not move to end of results file %s!\n", ITU_RESULTS_FILE);
// exit (1);
// }
// end = ftell (resultsFile);
//
// if (start == end) {
// fprintf (resultsFile, "REFERENCE\t DEGRADED\t PESQMOS\t MOSLQO\t SAMPLE_FREQ\t MODE\n");
// fflush (resultsFile);
// }
//
// fprintf (resultsFile, "%s----\t ", ref_info-> path_name);
// fprintf (resultsFile, "%s----\t ", deg_info-> path_name);
//
// fprintf (resultsFile, "%.4f\t ", err_info->pesq_mos);
// fprintf (resultsFile, "%.4f\t ", err_info->mapped_mos);
// fprintf (resultsFile, "%d\t", Fs);
//
// if ( err_info->mode == NB_MODE )
// fprintf (resultsFile, "nb");
// else
// fprintf (resultsFile, "wb");
//
// fprintf (resultsFile, "\n", Fs);
//
// fclose (resultsFile);
// }
}
}
/* END OF FILE */