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Add code to debug waveform peak-data

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This commit is contained in:
Robin Gareus 2020-12-21 21:37:45 +01:00
parent ee1e7ad00e
commit e4249b97ff
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 42 additions and 0 deletions
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42
libs/ardour/audiosource.cc
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@ -349,6 +349,48 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, samplecnt_t npeaks, samplepos
double samples_per_visual_peak, samplecnt_t samples_per_file_peak) const
{
Glib::Threads::Mutex::Lock lm (_lock);
#if 0 // DEBUG ONLY
/* Bypass peak-file cache, compute peaks using raw data from source */
DEBUG_TRACE (DEBUG::Peaks, string_compose ("RP: npeaks = %1 start = %2 cnt = %3 spp = %4\n", npeaks, start, cnt, samples_per_visual_peak));
{
samplecnt_t scm = ceil (samples_per_visual_peak);
samplecnt_t peak = 0;
#if 1 // direct read
boost::scoped_array<Sample> buf(new Sample[scm]);
while (peak < npeaks && cnt > 0) {
samplecnt_t samples_read = read_unlocked (buf.get(), start, scm);
if (samples_read == 0) {
break;
}
peaks[peak].min = peaks[peak].max = buf[0];
find_peaks (buf.get(), samples_read, &peaks[peak].min, &peaks[peak].max);
start += samples_read;
cnt -= samples_read;
++peak;
}
#else // generate square wave / ramp
while (peak < npeaks && cnt > 0) {
samplecnt_t samples_read = std::min (cnt, scm);
samplecnt_t val = (start + samples_read / 2) % 24000;
peaks[peak].min = peaks[peak].max = .5 - val / 24000.0;
start += samples_read;
cnt -= samples_read;
++peak;
}
#endif
while (peak < npeaks) {
peaks[peak].min = peaks[peak].max = 0;
++peak;
}
return 0;
}
#endif
double scale;
double expected_peaks;
PeakData::PeakDatum xmax;