CubicSDR/src/process/WaterfallVisualProcessor.h

#pragma once

#include "VisualProcessor.h"


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);
                }
            }
        }
*/
    }
};