Update buffer size when changing frequency range

Author: anjaldoshi

Source/SpectrumViewer.cpp

@@ -125,8 +125,11 @@ void SpectrumViewer::setFrequencyRange(Range<int> newRange)
 		tfrParams.freqStep = 1.0 / float(tfrParams.winLen * tfrParams.interpRatio);
 		tfrParams.nFreqs = int((tfrParams.freqEnd - tfrParams.freqStart) / tfrParams.freqStep);
 
+		int bufferSize = int(tfrParams.Fs * tfrParams.winLen);
+
 		for (int i = 0; i < MAX_CHANS; i++)
 		{
+			powerBuffers[i].setBufferSize(bufferSize, tfrParams.stepLen * tfrParams.Fs);
 			powerBuffers[i].setNumFreqs(tfrParams.nFreqs);
 		}
 

Source/SpectrumViewer.h

@@ -221,23 +221,20 @@ class SpectrumViewer :
 				}
 			}
 
-			if (numFreqsChanged)
-			{
-				power.clear();
+			power.clear();
 
-				LOGD("Creating ", stepsPerBuffer + 5, " power buffers of length ", nFreqs);
+			LOGD("Creating ", stepsPerBuffer + 5, " power buffers of length ", nFreqs);
 
-				for (int i = 0; i < stepsPerBuffer + 5; i++)
+			for (int i = 0; i < stepsPerBuffer + 5; i++)
+			{
+				power.add(new AtomicallyShared<std::vector<float>>());
+				power.getLast()->map([=](std::vector<float>& arr)
 				{
-					power.add(new AtomicallyShared<std::vector<float>>());
-					power.getLast()->map([=](std::vector<float>& arr)
-					{
-						arr.resize(nFreqs);
-					});
-				}
-
-				numFreqsChanged = false;
+					arr.resize(nFreqs);
+				});
 			}
+
+			numFreqsChanged = false;
 		}
 	};
 

Source/SpectrumViewerEditor.cpp

@@ -180,7 +180,7 @@ void SpectrumViewerEditor::comboBoxChanged(ComboBox* cb)
 				{
 					auto sp = stream->getParameter("Channels");
 					ped->setParameter(sp);
-					sp->setNextValue(sp->getValue());
+					getProcessor()->parameterChangeRequest(sp);
 					break;
 				}
 			}