- if (conversion_type_ == A2LConversionByTreshold) {
- const float threshold = (min_v + max_v) * 0.5; // middle between min and max
-
- // Convert as many sample blocks as we can
- while ((end_sample - i) > ConversionBlockSize) {
- const float* asamples = asegment->get_samples(i, i + ConversionBlockSize);
- for (uint32_t j = 0; j < ConversionBlockSize; j++)
- lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
- lsegment->append_payload(lsamples.data(), lsamples.size());
- i += ConversionBlockSize;
- lsamples.clear();
- delete[] asamples;
+ if (end_sample > start_sample) {
+ float min_v, max_v;
+ tie(min_v, max_v) = asegment->get_min_max();
+
+ vector<uint8_t> lsamples;
+ lsamples.reserve(ConversionBlockSize);
+
+ uint64_t i = start_sample;
+
+ if (conversion_type_ == A2LConversionByTreshold) {
+ const float threshold = (min_v + max_v) * 0.5; // middle between min and max
+
+ // Convert as many sample blocks as we can
+ while ((end_sample - i) > ConversionBlockSize) {
+ const float* asamples = asegment->get_samples(i, i + ConversionBlockSize);
+ for (uint32_t j = 0; j < ConversionBlockSize; j++)
+ lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
+ lsegment->append_payload(lsamples.data(), lsamples.size());
+ samples_added(lsegment, i, i + ConversionBlockSize);
+ i += ConversionBlockSize;
+ lsamples.clear();
+ delete[] asamples;
+ }
+
+ // Convert remaining samples
+ const float* asamples = asegment->get_samples(i, end_sample);
+ for (uint32_t j = 0; j < (end_sample - i); j++)
+ lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
+ lsegment->append_payload(lsamples.data(), lsamples.size());
+ samples_added(lsegment, i, end_sample);
+ delete[] asamples;
+ }
+
+ if (conversion_type_ == A2LConversionBySchmittTrigger) {
+ const float amplitude = max_v - min_v;
+ const float lo_thr = min_v + (amplitude * 0.1); // 10% above min
+ const float hi_thr = max_v - (amplitude * 0.1); // 10% below max
+ uint8_t state = 0; // TODO Use value of logic sample n-1 instead of 0
+
+ // Convert as many sample blocks as we can
+ while ((end_sample - i) > ConversionBlockSize) {
+ const float* asamples = asegment->get_samples(i, i + ConversionBlockSize);
+ for (uint32_t j = 0; j < ConversionBlockSize; j++)
+ lsamples.push_back(convert_a2l_schmitt_trigger(lo_thr, hi_thr, asamples[j], state));
+ lsegment->append_payload(lsamples.data(), lsamples.size());
+ samples_added(lsegment, i, i + ConversionBlockSize);
+ i += ConversionBlockSize;
+ lsamples.clear();
+ delete[] asamples;
+ }
+
+ // Convert remaining samples
+ const float* asamples = asegment->get_samples(i, end_sample);
+ for (uint32_t j = 0; j < (end_sample - i); j++)
+ lsamples.push_back(convert_a2l_schmitt_trigger(lo_thr, hi_thr, asamples[j], state));
+ lsegment->append_payload(lsamples.data(), lsamples.size());
+ samples_added(lsegment, i, end_sample);
+ delete[] asamples;
+ }
+
+ // If acquisition is ongoing, start-/endsample may have changed
+ end_sample = asegment->get_sample_count();