Restart min-max-based conversion if min or max change

[pulseview.git] / pv / data / analogsegment.cpp

diff --git a/pv/data/analogsegment.cpp b/pv/data/analogsegment.cpp
index 6dc2b915b30c4683f766bf97da4f662c44a9c07d..0610a4a800ca426a961950491b1fa05fea920ba4 100644 (file)
--- a/pv/data/analogsegment.cpp
+++ b/pv/data/analogsegment.cpp
@@ -178,6 +178,7 @@ void AnalogSegment::append_payload_to_envelope_levels()
        e0.length = sample_count_ / EnvelopeScaleFactor;
 
        // Calculate min/max values in case we have too few samples for an envelope
+       const float old_min_value = min_value_, old_max_value = max_value_;
        if (sample_count_ < EnvelopeScaleFactor) {
                it = begin_raw_sample_iteration(0);
                for (uint64_t i = 0; i < sample_count_; i++) {
@@ -257,6 +258,10 @@ void AnalogSegment::append_payload_to_envelope_levels()
                        *dest_ptr = sub_sample;
                }
        }
+
+       // Notify if the min or max value changed
+       if ((old_min_value != min_value_) || (old_max_value != max_value_))
+               owner_.min_max_changed(min_value_, max_value_);
 }
 
 } // namespace data