#include <extdef.h>
-#include <assert.h>
-#include <string.h>
-#include <stdlib.h>
+#include <cassert>
+#include <cstring>
+#include <cstdlib>
#include <cmath>
#include <algorithm>
+#include "analog.hpp"
#include "analogsegment.hpp"
using std::lock_guard;
logf(EnvelopeScaleFactor);
const uint64_t AnalogSegment::EnvelopeDataUnit = 64*1024; // bytes
-AnalogSegment::AnalogSegment(uint64_t samplerate) :
+AnalogSegment::AnalogSegment(Analog& owner, uint64_t samplerate) :
Segment(samplerate, sizeof(float)),
+ owner_(owner),
min_value_(0),
max_value_(0)
{
lock_guard<recursive_mutex> lock(mutex_);
+ uint64_t prev_sample_count = sample_count_;
+
for (uint32_t i=0; i < sample_count; i++) {
append_single_sample((void*)data);
data += stride;
// Generate the first mip-map from the data
append_payload_to_envelope_levels();
+
+ if (sample_count > 1)
+ owner_.notify_samples_added(this, prev_sample_count + 1,
+ prev_sample_count + 1 + sample_count);
+ else
+ owner_.notify_samples_added(this, prev_sample_count + 1,
+ prev_sample_count + 1);
}
const float* AnalogSegment::get_samples(
return std::make_pair(min_value_, max_value_);
}
-SegmentAnalogDataIterator* AnalogSegment::begin_sample_iteration(uint64_t start) const
+SegmentAnalogDataIterator* AnalogSegment::begin_sample_iteration(uint64_t start)
{
return (SegmentAnalogDataIterator*)begin_raw_sample_iteration(start);
}
-void AnalogSegment::continue_sample_iteration(SegmentAnalogDataIterator* it, uint64_t increase) const
+void AnalogSegment::continue_sample_iteration(SegmentAnalogDataIterator* it, uint64_t increase)
{
Segment::continue_raw_sample_iteration((SegmentRawDataIterator*)it, increase);
}
-void AnalogSegment::end_sample_iteration(SegmentAnalogDataIterator* it) const
+void AnalogSegment::end_sample_iteration(SegmentAnalogDataIterator* it)
{
Segment::end_raw_sample_iteration((SegmentRawDataIterator*)it);
}
prev_length = e0.length;
e0.length = sample_count_ / EnvelopeScaleFactor;
+ // Calculate min/max values in case we have too few samples for an envelope
+ if (sample_count_ < EnvelopeScaleFactor) {
+ it = begin_raw_sample_iteration(0);
+ for (uint64_t i = 0; i < sample_count_; i++) {
+ const float sample = *((float*)it->value);
+ if (sample < min_value_) min_value_ = sample;
+ if (sample > max_value_) max_value_ = sample;
+ continue_raw_sample_iteration(it, 1);
+ }
+ end_raw_sample_iteration(it);
+ }
+
// Break off if there are no new samples to compute
if (e0.length == prev_length)
return;