comparison transform/FeatureExtractionPluginTransform.cpp @ 133:b18b07474e11

* Fix to empty columns being returned from FFTDataServer to transform

                 int column = (blockFrame - startFrame) / m_stepSize;
                 for (size_t i = 0; i < m_blockSize/2; ++i) {
                     fftAdapters[ch]->getValuesAt
                         (column, i, buffers[ch][i*2], buffers[ch][i*2+1]);
                 }
+                //!!!
+                float sum = 0.0;
+                for (size_t i = 0; i < m_blockSize/2; ++i) {
+                    sum += buffers[ch][i*2];
+                }
+                if (fabs(sum) < 0.0001) {
+                    std::cerr << "WARNING: small sum for column " << column << " (sum is " << sum << ")" << std::endl;
+                }
             } else {
                 getFrames(ch, channelCount, 
                           blockFrame, m_blockSize, buffers[ch]);
             }                
         }