diff --git a/external/rtaudio/RtAudio.cpp b/external/rtaudio/RtAudio.cpp
index ddd8ff3..2167e84 100644
--- a/external/rtaudio/RtAudio.cpp
+++ b/external/rtaudio/RtAudio.cpp
@@ -10051,8 +10051,8 @@ void RtApi :: convertBuffer( char *outBuffer, char *inBuffer, ConvertInfo &info
 
 void RtApi :: byteSwapBuffer( char *buffer, unsigned int samples, RtAudioFormat format )
 {
-  register char val;
-  register char *ptr;
+  char val;
+   char *ptr;
 
   ptr = buffer;
   if ( format == RTAUDIO_SINT16 ) {
diff --git a/src/process/SpectrumVisualProcessor.h b/src/process/SpectrumVisualProcessor.h
index 2f9f9e8..20fa627 100644
--- a/src/process/SpectrumVisualProcessor.h
+++ b/src/process/SpectrumVisualProcessor.h
@@ -5,6 +5,81 @@
 class SpectrumVisualProcessor : public VisualProcessor {
 protected:
     virtual void process() {
-        
+        /*
+        std::vector<liquid_float_complex> *data = &input->data;
+        if (data && data->size()) {
+            if (fft_size != data->size()) {
+                setup(data->size());
+            }
+            if (spectrum_points.size() < fft_size * 2) {
+                if (spectrum_points.capacity() < fft_size * 2) {
+                    spectrum_points.reserve(fft_size * 2);
+                }
+                spectrum_points.resize(fft_size * 2);
+            }
+            
+            for (int i = 0; i < fft_size; i++) {
+                in[i][0] = (*data)[i].real;
+                in[i][1] = (*data)[i].imag;
+            }
+            
+            fftwf_execute(plan);
+            
+            float fft_ceil = 0, fft_floor = 1;
+            
+            if (fft_result.size() != fft_size) {
+                if (fft_result.capacity() < fft_size) {
+                    fft_result.reserve(fft_size);
+                    fft_result_ma.reserve(fft_size);
+                    fft_result_maa.reserve(fft_size);
+                }
+                fft_result.resize(fft_size);
+                fft_result_ma.resize(fft_size);
+                fft_result_maa.resize(fft_size);
+            }
+            
+            int n;
+            for (int i = 0, iMax = fft_size / 2; i < iMax; i++) {
+                float a = out[i][0];
+                float b = out[i][1];
+                float c = sqrt(a * a + b * b);
+                
+                float x = out[fft_size / 2 + i][0];
+                float y = out[fft_size / 2 + i][1];
+                float z = sqrt(x * x + y * y);
+                
+                fft_result[i] = (z);
+                fft_result[fft_size / 2 + i] = (c);
+            }
+            
+            for (int i = 0, iMax = fft_size; i < iMax; i++) {
+                fft_result_maa[i] += (fft_result_ma[i] - fft_result_maa[i]) * 0.65;
+                fft_result_ma[i] += (fft_result[i] - fft_result_ma[i]) * 0.65;
+                
+                if (fft_result_maa[i] > fft_ceil) {
+                    fft_ceil = fft_result_maa[i];
+                }
+                if (fft_result_maa[i] < fft_floor) {
+                    fft_floor = fft_result_maa[i];
+                }
+            }
+            
+            fft_ceil += 1;
+            fft_floor -= 1;
+            
+            fft_ceil_ma = fft_ceil_ma + (fft_ceil - fft_ceil_ma) * 0.01;
+            fft_ceil_maa = fft_ceil_maa + (fft_ceil_ma - fft_ceil_maa) * 0.01;
+            
+            fft_floor_ma = fft_floor_ma + (fft_floor - fft_floor_ma) * 0.01;
+            fft_floor_maa = fft_floor_maa + (fft_floor_ma - fft_floor_maa) * 0.01;
+            
+            for (int i = 0, iMax = fft_size; i < iMax; i++) {
+                float v = (log10(fft_result_maa[i] - fft_floor_maa) / log10(fft_ceil_maa - fft_floor_maa));
+                spectrum_points[i * 2] = ((float) i / (float) iMax);
+                spectrum_points[i * 2 + 1] = v;
+            }
+            
+        }
+*/
     }
 };
\ No newline at end of file
diff --git a/src/process/WaterfallVisualProcessor.h b/src/process/WaterfallVisualProcessor.h
index e1ee88f..b33c37e 100644
--- a/src/process/WaterfallVisualProcessor.h
+++ b/src/process/WaterfallVisualProcessor.h
@@ -6,6 +6,276 @@
 class WaterfallVisualProcessor : public VisualProcessor {
 protected:
     virtual void process() {
+/*
+        long double currentZoom = zoom;
         
+        if (mouseZoom != 1) {
+            currentZoom = mouseZoom;
+            mouseZoom = mouseZoom + (1.0 - mouseZoom) * 0.2;
+            if (fabs(mouseZoom-1.0)<0.01) {
+                mouseZoom = 1;
+            }
+        }
+        
+        long long bw;
+        if (currentZoom != 1) {
+            long long freq = wxGetApp().getFrequency();
+            
+            if (currentZoom < 1) {
+                centerFreq = getCenterFrequency();
+                bw = getBandwidth();
+                bw = (long long) ceil((long double) bw * currentZoom);
+                if (bw < 100000) {
+                    bw = 100000;
+                }
+                if (mouseTracker.mouseInView()) {
+                    long long mfreqA = getFrequencyAt(mouseTracker.getMouseX());
+                    setBandwidth(bw);
+                    long long mfreqB = getFrequencyAt(mouseTracker.getMouseX());
+                    centerFreq += mfreqA - mfreqB;
+                }
+                
+                setView(centerFreq, bw);
+                if (spectrumCanvas) {
+                    spectrumCanvas->setView(centerFreq, bw);
+                }
+            } else {
+                if (isView) {
+                    bw = getBandwidth();
+                    bw = (long long) ceil((long double) bw * currentZoom);
+                    if (bw >= wxGetApp().getSampleRate()) {
+                        disableView();
+                        if (spectrumCanvas) {
+                            spectrumCanvas->disableView();
+                        }
+                    } else {
+                        if (mouseTracker.mouseInView()) {
+                            long long mfreqA = getFrequencyAt(mouseTracker.getMouseX());
+                            setBandwidth(bw);
+                            long long mfreqB = getFrequencyAt(mouseTracker.getMouseX());
+                            centerFreq += mfreqA - mfreqB;
+                        }
+                        
+                        setView(getCenterFrequency(), bw);
+                        if (spectrumCanvas) {
+                            spectrumCanvas->setView(centerFreq, bw);
+                        }
+                    }
+                }
+            }
+            if (centerFreq < freq && (centerFreq - bandwidth / 2) < (freq - wxGetApp().getSampleRate() / 2)) {
+                centerFreq = (freq - wxGetApp().getSampleRate() / 2) + bandwidth / 2;
+            }
+            if (centerFreq > freq && (centerFreq + bandwidth / 2) > (freq + wxGetApp().getSampleRate() / 2)) {
+                centerFreq = (freq + wxGetApp().getSampleRate() / 2) - bandwidth / 2;
+            }
+        }
+        
+        std::vector<liquid_float_complex> *data = &input->data;
+        
+        if (data && data->size()) {
+            //        if (fft_size != data->size() && !isView) {
+            //            Setup(data->size(), waterfall_lines);
+            //        }
+            
+            //        if (last_bandwidth != bandwidth && !isView) {
+            //            Setup(bandwidth, waterfall_lines);
+            //        }
+            
+            if (spectrum_points.size() < fft_size * 2) {
+                spectrum_points.resize(fft_size * 2);
+            }
+            
+            unsigned int num_written;
+            
+            if (isView) {
+                if (!input->frequency || !input->sampleRate) {
+                    return;
+                }
+                
+                resamplerRatio = (double) (bandwidth) / (double) input->sampleRate;
+                
+                int desired_input_size = fft_size / resamplerRatio;
+                
+                if (input->data.size() < desired_input_size) {
+                    //                std::cout << "fft underflow, desired: " << desired_input_size << " actual:" << input->data.size() << std::endl;
+                    desired_input_size = input->data.size();
+                }
+                
+                if (centerFreq != input->frequency) {
+                    if ((centerFreq - input->frequency) != shiftFrequency || lastInputBandwidth != input->sampleRate) {
+                        if (abs(input->frequency - centerFreq) < (wxGetApp().getSampleRate() / 2)) {
+                            shiftFrequency = centerFreq - input->frequency;
+                            nco_crcf_reset(freqShifter);
+                            nco_crcf_set_frequency(freqShifter, (2.0 * M_PI) * (((double) abs(shiftFrequency)) / ((double) input->sampleRate)));
+                        }
+                    }
+                    
+                    if (shiftBuffer.size() != desired_input_size) {
+                        if (shiftBuffer.capacity() < desired_input_size) {
+                            shiftBuffer.reserve(desired_input_size);
+                        }
+                        shiftBuffer.resize(desired_input_size);
+                    }
+                    
+                    if (shiftFrequency < 0) {
+                        nco_crcf_mix_block_up(freqShifter, &input->data[0], &shiftBuffer[0], desired_input_size);
+                    } else {
+                        nco_crcf_mix_block_down(freqShifter, &input->data[0], &shiftBuffer[0], desired_input_size);
+                    }
+                } else {
+                    shiftBuffer.assign(input->data.begin(), input->data.end());
+                }
+                
+                if (!resampler || bandwidth != lastBandwidth || lastInputBandwidth != input->sampleRate) {
+                    float As = 60.0f;
+                    
+                    if (resampler) {
+                        msresamp_crcf_destroy(resampler);
+                    }
+                    resampler = msresamp_crcf_create(resamplerRatio, As);
+                    
+                    lastBandwidth = bandwidth;
+                    lastInputBandwidth = input->sampleRate;
+                }
+                
+                
+                int out_size = ceil((double) (desired_input_size) * resamplerRatio) + 512;
+                
+                if (resampleBuffer.size() != out_size) {
+                    if (resampleBuffer.capacity() < out_size) {
+                        resampleBuffer.reserve(out_size);
+                    }
+                    resampleBuffer.resize(out_size);
+                }
+                
+                
+                msresamp_crcf_execute(resampler, &shiftBuffer[0], desired_input_size, &resampleBuffer[0], &num_written);
+                
+                resampleBuffer.resize(fft_size);
+                
+                if (num_written < fft_size) {
+                    for (int i = 0; i < num_written; i++) {
+                        fft_in_data[i][0] = resampleBuffer[i].real;
+                        fft_in_data[i][1] = resampleBuffer[i].imag;
+                    }
+                    for (int i = num_written; i < fft_size; i++) {
+                        fft_in_data[i][0] = 0;
+                        fft_in_data[i][1] = 0;
+                    }
+                } else {
+                    for (int i = 0; i < fft_size; i++) {
+                        fft_in_data[i][0] = resampleBuffer[i].real;
+                        fft_in_data[i][1] = resampleBuffer[i].imag;
+                    }
+                }
+            } else {
+                num_written = data->size();
+                if (data->size() < fft_size) {
+                    for (int i = 0, iMax = data->size(); i < iMax; i++) {
+                        fft_in_data[i][0] = (*data)[i].real;
+                        fft_in_data[i][1] = (*data)[i].imag;
+                    }
+                    for (int i = data->size(); i < fft_size; i++) {
+                        fft_in_data[i][0] = 0;
+                        fft_in_data[i][1] = 0;
+                    }
+                } else {
+                    for (int i = 0; i < fft_size; i++) {
+                        fft_in_data[i][0] = (*data)[i].real;
+                        fft_in_data[i][1] = (*data)[i].imag;
+                    }
+                }
+            }
+            
+            bool execute = false;
+            
+            if (num_written >= fft_size) {
+                execute = true;
+                memcpy(in, fft_in_data, fft_size * sizeof(fftwf_complex));
+                memcpy(fft_last_data, in, fft_size * sizeof(fftwf_complex));
+                
+            } else {
+                if (last_data_size + num_written < fft_size) { // priming
+                    unsigned int num_copy = fft_size - last_data_size;
+                    if (num_written > num_copy) {
+                        num_copy = num_written;
+                    }
+                    memcpy(fft_last_data, fft_in_data, num_copy * sizeof(fftwf_complex));
+                    last_data_size += num_copy;
+                } else {
+                    unsigned int num_last = (fft_size - num_written);
+                    memcpy(in, fft_last_data + (last_data_size - num_last), num_last * sizeof(fftwf_complex));
+                    memcpy(in + num_last, fft_in_data, num_written * sizeof(fftwf_complex));
+                    memcpy(fft_last_data, in, fft_size * sizeof(fftwf_complex));
+                    execute = true;
+                }
+            }
+            
+            if (execute) {
+                fftwf_execute(plan);
+                
+                float fft_ceil = 0, fft_floor = 1;
+                
+                if (fft_result.size() < fft_size) {
+                    fft_result.resize(fft_size);
+                    fft_result_ma.resize(fft_size);
+                    fft_result_maa.resize(fft_size);
+                }
+                
+                int n;
+                for (int i = 0, iMax = fft_size / 2; i < iMax; i++) {
+                    float a = out[i][0];
+                    float b = out[i][1];
+                    float c = sqrt(a * a + b * b);
+                    
+                    float x = out[fft_size / 2 + i][0];
+                    float y = out[fft_size / 2 + i][1];
+                    float z = sqrt(x * x + y * y);
+                    
+                    fft_result[i] = (z);
+                    fft_result[fft_size / 2 + i] = (c);
+                }
+                
+                for (int i = 0, iMax = fft_size; i < iMax; i++) {
+                    if (isView) {
+                        fft_result_maa[i] += (fft_result_ma[i] - fft_result_maa[i]) * 0.65;
+                        fft_result_ma[i] += (fft_result[i] - fft_result_ma[i]) * 0.65;
+                    } else {
+                        fft_result_maa[i] += (fft_result_ma[i] - fft_result_maa[i]) * 0.65;
+                        fft_result_ma[i] += (fft_result[i] - fft_result_ma[i]) * 0.65;
+                    }
+                    
+                    if (fft_result_maa[i] > fft_ceil) {
+                        fft_ceil = fft_result_maa[i];
+                    }
+                    if (fft_result_maa[i] < fft_floor) {
+                        fft_floor = fft_result_maa[i];
+                    }
+                }
+                
+                fft_ceil += 0.25;
+                fft_floor -= 1;
+                
+                fft_ceil_ma = fft_ceil_ma + (fft_ceil - fft_ceil_ma) * 0.05;
+                fft_ceil_maa = fft_ceil_maa + (fft_ceil_ma - fft_ceil_maa) * 0.05;
+                
+                fft_floor_ma = fft_floor_ma + (fft_floor - fft_floor_ma) * 0.05;
+                fft_floor_maa = fft_floor_maa + (fft_floor_ma - fft_floor_maa) * 0.05;
+                
+                for (int i = 0, iMax = fft_size; i < iMax; i++) {
+                    float v = (log10(fft_result_maa[i] - fft_floor_maa) / log10(fft_ceil_maa - fft_floor_maa));
+                    spectrum_points[i * 2] = ((float) i / (float) iMax);
+                    spectrum_points[i * 2 + 1] = v;
+                }
+                
+                if (spectrumCanvas) {
+                    spectrumCanvas->spectrum_points.assign(spectrum_points.begin(), spectrum_points.end());
+                    spectrumCanvas->getSpectrumContext()->setCeilValue(fft_ceil_maa);
+                    spectrumCanvas->getSpectrumContext()->setFloorValue(fft_floor_maa);
+                }
+            }
+        }
+*/
     }
 };
\ No newline at end of file