ardour/livetrax
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Peakdata: correctly set peaks of left and right end

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This commit is contained in:
Robin Gareus 2024-09-25 04:26:22 +02:00
parent 0357c12fcc
commit 5d65d7f051
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 24 additions and 3 deletions
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21
libs/ardour/audiosource.cc
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@ -586,6 +586,7 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, samplecnt_t npeaks, samplepos
samplepos_t current_stored_peak = (samplepos_t) ceil (start / (double) samples_per_file_peak);
samplepos_t next_visual_peak = (samplepos_t) ceil (start / samples_per_visual_peak);
double next_visual_peak_sample = next_visual_peak * samples_per_visual_peak;
samplepos_t stored_peak_before_next_visual_peak = (samplepos_t) next_visual_peak_sample / samples_per_file_peak;
samplecnt_t nvisual_peaks = 0;
uint32_t i = 0;
@ -603,6 +604,10 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, samplecnt_t npeaks, samplepos
size_t map_length = (chunksize * sizeof(PeakData)) + map_delta;
if (_first_run || (_last_scale != samples_per_visual_peak) || (_last_map_off != map_off) || (_last_raw_map_length < raw_map_length)) {
/* offset between requested start, and first peak-file peak */
samplecnt_t start_offset = next_visual_peak_sample - start;
peak_cache.reset (new PeakData[npeaks]);
boost::scoped_array<PeakData> staging (new PeakData[chunksize]);
@ -665,6 +670,22 @@ AudioSource::read_peaks_with_fpp (PeakData *peaks, samplecnt_t npeaks, samplepos
stored_peak_before_next_visual_peak = (uint32_t) next_visual_peak_sample / samples_per_file_peak;
}
/* add data between start and sample corresponding to map_off */
if (start_offset > 0) {
boost::scoped_array<Sample> buf(new Sample[start_offset]);
samplecnt_t samples_read = read_unlocked (buf.get(), start, start_offset);
find_peaks (buf.get(), samples_read, &peak_cache[0].min, &peak_cache[0].max);
}
/* fix end, add data not covered by Peak File */
samplecnt_t last_sample_from_peakfile = current_stored_peak * samples_per_file_peak;
if (last_sample_from_peakfile < start + cnt && nvisual_peaks > 0) {
samplecnt_t to_read = start + cnt - last_sample_from_peakfile;
boost::scoped_array<Sample> buf(new Sample[to_read]);
samplecnt_t samples_read = read_unlocked (buf.get(), last_sample_from_peakfile, to_read);
find_peaks (buf.get(), samples_read, &peak_cache[nvisual_peaks - 1].min, &peak_cache[nvisual_peaks - 1].max);
}
if (zero_fill) {
#ifndef NDEBUG
cerr << "Zero fill '" << _name << "' end of peaks (@ " << read_npeaks << " with " << zero_fill << ")" << endl;