int main(int argc, const char *argv[]) {
const int nx = 32, ny = 32, nz = 32, dim = nx*ny*nz;
const int dims[3] = {nx, ny, nz};
const float mmppixr[] = { 2, 2, 2 }, centerr[] = { 0, 0, 0};
const float blur_radius = 4.0;
int iz, iy, ix, i;
float *image, *mask, *roi;
pf_log_all(1);
image = calloc(dim, sizeof(float));
roi = calloc(dim, sizeof(float));
mask = malloc(dim * sizeof(float));
if (!image || !mask || !roi) {
fprintf(stderr, "allocation failed");
exit(1);
}
/* start with a trivial mask and a gaussian image*/
float min = INT_MAX, max = INT_MIN;
for (i = iz = 0; iz < nz; iz++) {
for (iy = 0; iy < ny; iy++) {
for (ix = 0; ix < nx; ix++, i++) {
mask[i] = 1.0;
image[i] = gauss3d(ix-(nx/2),iy-(ny/2),iz-(ny/2),nx/4);
if (image[i] > max) {
max = image[i];
}
if (image[i] < min) {
min = image[i];
}
}
}
}
fprintf(stdout, "image value range: [%g, %g]\n", min, max);
display(image, dims, 17, max);
sphereblur(image, dims, mmppixr, blur_radius);
display(image, dims, 17, max);
find_peaks(image, dims, mmppixr, centerr,
0, 0, 0, 0, 1,
roi, 4, 0, 8, mask, 0, 0);
puts("slice at peak:\n");
display(roi, dims, 17, max);
puts("2 slices away from peak:\n");
display(roi, dims, 15, max);
puts("4 slices away from peak:\n");
display(roi, dims, 13, max);
}
void FormOptimization::update_plots() {
bool have_data = false;
bool have_peaks = false;
for (auto &q: current_spectra_.by_type("1D")) {
Qpx::Spectrum::Metadata md;
if (q)
md = q->metadata();
if (md.total_count > 0) {
have_data = true;
fitter_opt_.setData(q);
}
}
if (have_data) {
have_peaks = find_peaks();
int current_spec = spectra_.size() - 1;
spectra_[current_spec] = fitter_opt_;
setting_fwhm_[current_spec] = peaks_[current_spec].fwhm_hyp;
ui->tableResults->setRowCount(peaks_.size());
QTableWidgetItem *st = new QTableWidgetItem(QString::number(setting_values_[current_spec]));
st->setFlags(st->flags() ^ Qt::ItemIsEditable);
ui->tableResults->setItem(current_spec, 0, st);
QTableWidgetItem *en = new QTableWidgetItem(QString::number(peaks_[current_spec].energy));
en->setFlags(en->flags() ^ Qt::ItemIsEditable);
ui->tableResults->setItem(current_spec, 1, en);
QTableWidgetItem *fw = new QTableWidgetItem(QString::number(peaks_[current_spec].fwhm_hyp));
fw->setFlags(fw->flags() ^ Qt::ItemIsEditable);
ui->tableResults->setItem(current_spec, 2, fw);
QTableWidgetItem *area = new QTableWidgetItem(QString::number(peaks_[current_spec].area_best.val));
area->setFlags(area->flags() ^ Qt::ItemIsEditable);
ui->tableResults->setItem(current_spec, 3, area);
QTableWidgetItem *err = new QTableWidgetItem(QString::number(peaks_[current_spec].sum4_.peak_area.err()));
err->setFlags(err->flags() ^ Qt::ItemIsEditable);
ui->tableResults->setItem(current_spec, 4, err);
}
if (ui->plotSpectrum->isVisible())
ui->plotSpectrum->update_spectrum();
if (have_peaks && !peaks_.empty() && (peaks_.back().sum4_.peak_area.err() < ui->doubleError->value()))
interruptor_.store(true);
resultChosen();
}
// Finds the largest price decline in the price of artichokes
// This function uses the min/max method
double findLargestDecline( int n, coefficient_struct equation )
{
pointHolder zeros;
// These are zeros of the derivitive, tehy will be the local maxima/minima of interest
zeros = find_peaks( equation , n );
return( findDeclineFromPoints( zeros ) );
}
sample PeakODF::process_frame(int signal_size, sample* signal)
{
PeakList* peaks = track_peaks(find_peaks(frame_size, &signal[0], mq_params),
mq_params);
/* calculate the amplitude differences between bins from consecutive frames */
sample sum = 0.0;
while(peaks && peaks->peak)
{
sum += get_distance(peaks->peak, peaks->peak->prev);
peaks = peaks->next;
}
return sum;
}
void RV_Missing_t_walk_core::find_slice() {
total_slice_length = 0.0;
intervals.clear();
find_peaks();
peaks.erase(
std::remove_if(peaks.begin(), peaks.end(),
[=](double x) {
return lpdf(x) < ly ? true : false;
}
),
peaks.end()
);
if (peaks.size() < 1) {
std::cout << "Warning: peak finding failed, defined from"
"\non current state." << std::endl;
peaks.push_back(x2);
}
// throw std::runtime_error("No peaks found above slice.");
// step out from peak.
peak_bound_lr.clear();
for (std::vector<double>::iterator i = peaks.begin();
i != peaks.end(); ++i) {
peak_bound_lr.push_back(step_out(i));
}
// Fix overlap
for (unsigned int i = 0; i != (peak_bound_lr.size()-1); i++) {
if (peak_bound_lr[i+1][0] < peak_bound_lr[i][1] ) {
double mid = (peaks[i+1] + peaks[i])/2.0;
peak_bound_lr[i+1][0] = mid;
peak_bound_lr[i][1] = mid;
}
}
for (std::vector<std::vector<double> >::iterator i = peak_bound_lr.begin();
i != peak_bound_lr.end(); ++i)
{
bool lb = (i == (peak_bound_lr.end() - 1 ));
// Calculate sub-slice to sub-slice distances:
total_slice_length += (*i)[1] - (*i)[0];
if (!lb) {
intervals.push_back((*(i+1))[0] - (*i)[1]);
}
}
if (peak_bound_lr.size() != peaks.size() )
throw std::runtime_error("Mismatch between number of peaks and number of bounds.");
}
static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr)
{
DCAEncContext *c = avctx->priv_data;
const int32_t *samples;
int ret, i;
if ((ret = ff_alloc_packet2(avctx, avpkt, c->frame_size, 0)) < 0)
return ret;
samples = (const int32_t *)frame->data[0];
subband_transform(c, samples);
if (c->lfe_channel)
lfe_downsample(c, samples);
calc_masking(c, samples);
find_peaks(c);
assign_bits(c);
calc_scales(c);
quantize_all(c);
shift_history(c, samples);
init_put_bits(&c->pb, avpkt->data, avpkt->size);
put_frame_header(c);
put_primary_audio_header(c);
for (i = 0; i < SUBFRAMES; i++)
put_subframe(c, i);
for (i = put_bits_count(&c->pb); i < 8*c->frame_size; i++)
put_bits(&c->pb, 1, 0);
flush_put_bits(&c->pb);
avpkt->pts = frame->pts;
avpkt->duration = ff_samples_to_time_base(avctx, frame->nb_samples);
avpkt->size = put_bits_count(&c->pb) >> 3;
*got_packet_ptr = 1;
return 0;
}
main() {
int r, c;
int terra[R][C];
//generate a text file with data:
FILE *terrain;
terrain = fopen("terrain.txt", "w");
for(r=0; r<R; r++) {
for(c=0; c<C; c++)
fprintf(terrain, "%2i ", rand()%100);
fprintf(terrain, "%c", '\n');
}
fclose(terrain);
//read the data from text file to an array
terrain = fopen("terrain.txt", "r");
if(terrain == NULL)
printf("Can't open terrain.txt\n\n");
else
for(r=0; r<R; r++)
for(c=0; c<C; c++)
fscanf(terrain, "%i", &terra[r][c]);
//show the peaks
find_peaks(terra);
}
int main (int argc, char *argv[]) {
char *filename_AG = NULL;
char *filename_WD = NULL;
int num_WD = 0;
char *filename_AGWD = NULL;
char *filename_ALN = NULL;
float thresholdWD = 0.00;
unsigned int p0AG = 0;
unsigned int p0WD = 0;
switch (argc) {
case 2:
if (strcmp(argv [1], "--help") == 0) {
welcome();
help();
return 0;
}
break;
case 17:
if (strcmp(argv [1], "--sequence") == 0 &&
strcmp(argv [3], "--wd") == 0 &&
strcmp(argv [5], "--num") == 0 &&
strcmp(argv [7], "--out") == 0 &&
strcmp(argv [9], "--aln") == 0 &&
strcmp(argv [11], "--th") == 0 &&
strcmp(argv [13], "--pwd") == 0 &&
strcmp(argv [15], "--pag") == 0) {
filename_AG = argv[2];
filename_WD = argv[4];
assert(sscanf(argv [6], "%d", &num_WD) == 1);
filename_AGWD = argv[8];
filename_ALN = argv[10];
assert(sscanf(argv [12], "%f", &thresholdWD) == 1);
assert(sscanf(argv [14], "%d", &p0WD) == 1);
assert(sscanf(argv [16], "%d", &p0AG) == 1);
}
else
return -1;
break;
default:
welcome();
help();
return 0;
break;
}
/* The num_WD variable is not needed any more.
* I keep it just for because it helps me while
* reading at the log files.
*/
printf("Working on WD %d\n", num_WD);
/* Here I create the PCM objects, crucial for
* PCM data import.
* pcmWD contains the WD data (extracted from the US stream)
* pcmAG contains the AG sequence, as shipped by the AG500 machine from hell
*/
mObjectPCM<int16_t> *pcmWD;
mObjectPCM<int16_t> *pcmAG;
pcmWD = new mObjectPCM<int16_t>(MPCM_STEREO, MPCM_STREAM_TINY);
pcmAG = new mObjectPCM<int16_t>(MPCM_MONO, MPCM_STREAM_TINY);
/* Read the previoulsy described WAV files */
mAudio2PCM(filename_WD, 0, 0, pcmWD);
mAudio2PCM(filename_AG, 0, 0, pcmAG);
/* Free unused memory */
pcmWD->Trim();
pcmAG->Trim();
/* Here I dump the PCM informations in handy buffers
* bufferWD contains the WD data, right channel of the US stream
* bufferSN contains the SN (sync) data, left channel of the US stream
* bufferAG contains the AG SEQ data. This buffer will be used r/w
* for peak detection. The original information is gonna
* be lost. In fact...
* bufferAG_copy ...contains a copy of the AG SEQ data
*/
int16_t *bufferWD = NULL;
int16_t *bufferSN = NULL;
int16_t *bufferAG = NULL;
int16_t *bufferAG_copy = NULL;
/* A size for almost each buffer. Almost each means
* that bufferWD and bufferSN have the same size samplesWD.
* Also bufferAG and its copy bufferAG_copy have the same size,
* but they are used for processing, so I prefere to keep two
* sizes.
*/
unsigned int samplesWD;
unsigned int samplesAG;
unsigned int samplesAG_copy;
/* Fill the buffers... */
pcmWD->ExportBuffers(&bufferSN, &bufferWD, samplesWD);
pcmAG->ExportBuffer(&bufferAG, samplesAG);
pcmAG->ExportBuffer(&bufferAG_copy, samplesAG_copy);
/* ... and release the unused memory. */
delete pcmAG;
delete pcmWD;
free(bufferSN);
/* Threshold the WD and AG buffers.
* AG buffer thresholding uses a standard value
* WD buffer requires the same value used by pdetect2.
* The value is stored in config/lm_pdetect.cfg
*/
#ifdef USE_SAT_INVERT
negative(bufferWD, samplesWD);
negative(bufferAG, samplesAG);
#endif
threshold(bufferWD, samplesWD, thresholdWD);
threshold(bufferAG, samplesAG, AG_TH);
#ifdef DEVELOP
/* Now is time to look at the thresholded signals */
mEncodePCM16("debug/th_wd.wav", bufferWD, NULL, samplesWD, 48000, 1);
mEncodePCM16("debug/th_ag.wav", bufferAG, NULL, samplesAG, 16000, 1);
#endif
/* Remove spikes and artifacts.
* clean_spurious_spikes runs twice, just because I'm used
* to work on the clean_spikes code. It's a preventive bug-fix.
*/
unsigned int peaksWD;
clean_spurious_spikes(bufferWD, samplesWD);
peaksWD = clean_spikes(bufferWD, samplesWD, US_DS_PEAK, US_DS_ARTI);
clean_spurious_spikes(bufferWD, samplesWD);
unsigned int peaksAG;
clean_spurious_spikes(bufferAG, samplesAG);
//peaksAG = clean_spikes(bufferAG, samplesAG, AG_DS_PEAK, AG_DS_ARTI);
peaksAG = clean_spikes(bufferAG, samplesAG, 10, AG_DS_ARTI);
clean_spurious_spikes(bufferAG, samplesAG);
printf("Peaks found on RAW data:\n");
printf(" WD data: %d\n", peaksWD);
printf(" AG data: %d\n", peaksAG);
#ifdef DEVELOP
/* Now is time to look at those spiky signals */
mEncodePCM16("debug/p_wd.wav", bufferWD, NULL, samplesWD, 48000, 1);
mEncodePCM16("debug/p_ag.wav", bufferAG, NULL, samplesAG, 16000, 1);
#endif
/* Sample-and-Hold AG signal (the spiky one)
* This method works fine with spiky signals since
* it samples and holds a sample value for samplesAGR
* times.
* Q: Why 3?
* A: AG = 16kHz, WD = 48kHz. I want to compare the WD spiky
* signal with the resampled version or the AG spiky signal, find
* the WD peaks there, calculate the lag, crop the AG signal rescaling
* bach the AGR sample values.
*/
unsigned int samplesAGR = 3 * samplesAG;
int16_t *bufferAGR = (int16_t *)malloc(samplesAGR * sizeof(int16_t));
memset(bufferAGR, 0, samplesAGR * sizeof(int16_t));
resample_linear(bufferAG, bufferAGR, samplesAG, 3, 0);
#ifdef DEVELOP
/* Now is time to look at the spiky signal, resampled. */
mEncodePCM16("debug/p_agr.wav", bufferAGR, NULL, samplesAGR, 48000, 1);
#endif
/* Collect the peaks found on the AGR data */
WD_peaks peaks_dataAGR;
memset(&peaks_dataAGR, 0, sizeof(WD_peaks));
find_peaks(bufferAGR, samplesAGR, peaks_dataAGR, 0);
/* Collect the peaks found on the WD data */
WD_peaks peaks_dataWD;
memset(&peaks_dataWD, 0, sizeof(WD_peaks));
find_peaks(bufferWD, samplesWD, peaks_dataWD, 0);
printf("Peaks found on cleaned data:\n");
printf(" WD data: %d\n", peaks_dataWD.tot);
printf(" AGR data: %d\n", peaks_dataAGR.tot);
#ifdef DEVELOP
printf("Peaks AGR:\n");
print_peaks(peaks_dataAGR);
printf("Peaks WD:\n");
print_peaks(peaks_dataWD);
#endif
/* Sequence peak-consistency check.
* Controls if the sequence starts with 3 +SAT peaks
* and if it ends with 3 -SAT peaks.
*/
bool start_ok = check_sequence_start(peaks_dataAGR);
bool stop_ok = check_sequence_stop(peaks_dataAGR);
printf("AGR sequence peak-consistency:\n");
printf(" Start: %s\n", start_ok ? "passed" : "failed");
printf(" Stop: %s\n", stop_ok ? "passed" : "failed");
/* Two cases here:
* - If we are aligning using the WD start peak, it means
* that the WD stop peak is/is not distorted/broken/ghosted,
* so the WD start peak will be the first one in
* peaks_dataWD.
* - If we are aligning using the WD stop peak, it means
* that the WD start peak is broken.
* Just one peak should be present in peaks_dataWD
* So, p0WD_idx is alwais equal to 0!
*/
unsigned int p0WD_idx = 0;
printf("Peaks used for the alignment:\n");
printf(" AGR: %d (value=%d, lenght=%d)\n",
p0AG, peaks_dataAGR.type[p0AG], peaks_dataAGR.length[p0AG]);
printf(" WD: %d (value=%d, lenght=%d)\n",
p0WD, peaks_dataWD.type[p0WD_idx], peaks_dataWD.length[p0WD_idx]);
/* Let's use AGR as reference and find where the WD
* word is, calculating the lag between the two signals.
*/
unsigned int s0AGR = peaks_dataAGR.start[p0AG] - peaks_dataWD.start[p0WD_idx];
unsigned int s1AGR = s0AGR + samplesWD;
/*
if(p0WD == 0)
assert(peaks_dataWD.tot == 2);
*/
if(p0WD == 1) {
printf("Error: user supplied pwd does not match WD peak data\n");
assert(peaks_dataWD.tot == 1);
}
/*
unsigned int s0AGR = 0;
unsigned int s1AGR = 0;
if(p0WD == 0) {
s0AGR = peaks_dataAGR.start[p0AG] - peaks_dataWD.start[p0WD];
s1AGR = s0AGR + samplesWD;
}
else {
s0AGR = peaks_dataAGR.start[p0AG] - peaks_dataWD.start[p0WD_idx];
s1AGR = s0AGR + samplesWD;
}
*/
/* Scale the AGR samples values back to 16kHz (for AG)... */
unsigned int s0AG = s0AGR/3;
unsigned int s1AG = s1AGR/3;
/* ...and to 200Hz for AGAMP/POS. */
unsigned int s0AGAMP = s0AG/80;
unsigned int s1AGAMP = s1AG/80;
/* Done! As usual, put spam on the term... */
printf("Results, in full ALN fashion:\n");
printf(" AGR: %d:%d\n", s0AGR, s1AGR);
printf(" AG: %d:%d\n", s0AG, s1AG);
printf(" AGAMP: %d:%d\n", s0AGAMP, s1AGAMP);
/* I'm ready to save a cropped version of the AG SEQ file, that
* matches in lenght the WD word.
* Here I crop...
*/
unsigned int samplesAGWD = s1AG - s0AG + 1;
int16_t *bufferAGWD = (int16_t *)malloc(samplesAGWD * sizeof(int16_t));
/* .. and here I put ham on some audio file... */
memcpy(bufferAGWD, bufferAG_copy + s0AG, samplesAGWD * sizeof(int16_t));
mEncodePCM16(filename_AGWD, bufferAGWD, NULL, samplesAGWD, 16000, 1);
/* .. and spam on some ALN file. */
FILE *file_align = fopen(filename_ALN, "w");
fprintf(file_align, "%d/%d/", s0AGR, s1AGR);
fprintf(file_align, "%d/%d/", s0AG, s1AG);
fprintf(file_align, "%d/%d\n", s0AGAMP, s1AGAMP);
fclose(file_align);
/* Cleaning up memory */
free(bufferWD);
free(bufferAG);
free(bufferAG_copy);
free(bufferAGR);
return 0;
}