initial commit

src/ui/Application.h

@@ -0,0 +1,110 @@
+#pragma once
+
+#include "core/Types.h"
+#include "dsp/SpectrumAnalyzer.h"
+#include "audio/AudioSource.h"
+#include "audio/PortAudioSource.h"
+#include "ui/ColorMap.h"
+#include "ui/WaterfallDisplay.h"
+#include "ui/SpectrumDisplay.h"
+#include "ui/Cursors.h"
+
+#include <SDL.h>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace baudline {
+
+class Application {
+public:
+    Application();
+    ~Application();
+
+    bool init(int argc, char** argv);
+    void run();
+    void shutdown();
+
+private:
+    void processAudio();
+    void render();
+    void renderControlPanel();
+    void renderSpectrumPanel();
+    void renderWaterfallPanel();
+    void handleSpectrumInput(float posX, float posY, float sizeX, float sizeY);
+
+    void openPortAudio();
+    void openFile(const std::string& path, InputFormat format, double sampleRate);
+    void updateAnalyzerSettings();
+
+    // SDL / GL / ImGui
+    SDL_Window*   window_    = nullptr;
+    SDL_GLContext  glContext_ = nullptr;
+    bool           running_  = false;
+
+    // Audio
+    std::unique_ptr<AudioSource> audioSource_;
+    std::vector<float>           audioBuf_;     // temp read buffer
+
+    // DSP
+    SpectrumAnalyzer analyzer_;
+    AnalyzerSettings settings_;
+
+    // UI state
+    ColorMap          colorMap_;
+    WaterfallDisplay  waterfall_;
+    SpectrumDisplay   specDisplay_;
+    Cursors           cursors_;
+
+    // Display settings
+    float     minDB_       = -120.0f;
+    float     maxDB_       = 0.0f;
+    FreqScale freqScale_   = FreqScale::Linear;
+    bool      paused_      = false;
+    int       waterfallW_  = 0;
+    int       waterfallH_  = 0;
+
+    // FFT size options
+    static constexpr int kFFTSizes[] = {256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536};
+    static constexpr int kNumFFTSizes = 9;
+    int fftSizeIdx_ = 4; // default 4096
+
+    // Overlap (continuous 0–95%)
+    float overlapPct_ = 50.0f;
+
+    // Window
+    int windowIdx_ = static_cast<int>(WindowType::BlackmanHarris);
+
+    // Color map
+    int colorMapIdx_ = static_cast<int>(ColorMapType::Magma);
+
+    // File playback
+    std::string filePath_;
+    int         fileFormatIdx_ = 0;
+    float       fileSampleRate_ = 48000.0f;
+    bool        fileLoop_ = true;
+
+    // Device selection
+    std::vector<PortAudioSource::DeviceInfo> paDevices_;
+    int paDeviceIdx_ = 0;
+
+    // Channel colors (up to kMaxChannels).  Defaults: L=purple, R=green.
+    ImVec4 channelColors_[kMaxChannels] = {
+        {0.70f, 0.30f, 1.00f, 1.0f},  // purple
+        {0.20f, 0.90f, 0.30f, 1.0f},  // green
+        {1.00f, 0.55f, 0.00f, 1.0f},  // orange
+        {0.00f, 0.75f, 1.00f, 1.0f},  // cyan
+        {1.00f, 0.25f, 0.25f, 1.0f},  // red
+        {1.00f, 1.00f, 0.30f, 1.0f},  // yellow
+        {0.50f, 0.80f, 0.50f, 1.0f},  // light green
+        {0.80f, 0.50f, 0.80f, 1.0f},  // pink
+    };
+    int  waterfallChannel_ = 0;    // which channel drives the waterfall (single mode)
+    bool waterfallMultiCh_ = true; // true = multi-channel overlay mode
+    bool channelEnabled_[kMaxChannels] = {true,true,true,true,true,true,true,true};
+
+    // Spectrum panel geometry (stored for cursor interaction)
+    float specPosX_ = 0, specPosY_ = 0, specSizeX_ = 0, specSizeY_ = 0;
+};
+
+} // namespace baudline