comparison BeatRootProcessor.h @ 15:887c629502a9

refactor: pull method implementations into .cpp files

     /** Processes a frame of frequency-domain audio data by mapping
      *  the frequency bins into a part-linear part-logarithmic array,
      *  then computing the spectral flux then (optionally) normalising
      *  and calculating onsets.
      */
-    void processFrame(const float *const *inputBuffers) {
-        double flux = 0;
-        for (int i = 0; i <= fftSize/2; i++) {
-            double mag = sqrt(inputBuffers[0][i*2] * inputBuffers[0][i*2] +
-                              inputBuffers[0][i*2+1] * inputBuffers[0][i*2+1]);
-            if (mag > prevFrame[i]) flux += mag - prevFrame[i];
-            prevFrame[i] = mag;
-        }
-
-        spectralFlux.push_back(flux);
-
-    } // processFrame()
+    void processFrame(const float *const *inputBuffers);
 
     /** Tracks beats once all frames have been processed by processFrame
      */
-    EventList beatTrack() {
-
-        for (int i = 0; i < spectralFlux.size(); ++i) {
-            if ((i % 8) == 0) std::cerr << "\n";
-            std::cerr << spectralFlux[i] << " ";
-        }
-		
-        double hop = hopTime;
-        Peaks::normalise(spectralFlux);
-        vector<int> peaks = Peaks::findPeaks(spectralFlux, (int)lrint(0.06 / hop), 0.35, 0.84, true);
-        onsets.clear();
-        onsets.resize(peaks.size(), 0);
-        vector<int>::iterator it = peaks.begin();
-        onsetList.clear();
-        double minSalience = Peaks::min(spectralFlux);
-        for (int i = 0; i < onsets.size(); i++) {
-            int index = *it;
-            ++it;
-            onsets[i] = index * hop;
-            Event e = BeatTracker::newBeat(onsets[i], 0);
-//			if (debug)
-//				System.err.printf("Onset: %8.3f  %8.3f  %8.3f\n",
-//						onsets[i], energy[index], slope[index]);
-//			e.salience = slope[index];	// or combination of energy + slope??
-            // Note that salience must be non-negative or the beat tracking system fails!
-            e.salience = spectralFlux[index] - minSalience;
-            onsetList.push_back(e);
-        }
-
-#ifdef DEBUG_BEATROOT
-        std::cerr << "Onsets: " << onsetList.size() << std::endl;
-#endif
-
-        return BeatTracker::beatTrack(onsetList);
-
-    } // processFile()
+    EventList beatTrack();
 
 protected:
     /** Allocates memory for arrays, based on parameter settings */
     void init() {
         makeFreqMap(fftSize, sampleRate);