Show stereo divider

src/AppFrame.cpp

@@ -123,6 +123,8 @@ void AppFrame::OnIdle(wxIdleEvent& event) {
                 scopeCanvas->waveform_points[i * 2] = ((double) i / (double) iMax);
             }
 
+            scopeCanvas->setDivider(demodAudioData->channels == 2);
+
             delete demodAudioData;
         } else {
             std::cout << "Incoming Demodulator data empty?" << std::endl;

src/demod/DemodulatorInstance.cpp

@@ -2,7 +2,7 @@
 
 DemodulatorInstance::DemodulatorInstance() :
         t_Demod(NULL), t_PreDemod(NULL), t_Audio(NULL), threadQueueDemod(NULL), demodulatorThread(NULL), terminated(false), audioTerminated(false), demodTerminated(
-        false), preDemodTerminated(false), active(false), squelch(false) {
+        false), preDemodTerminated(false), active(false), squelch(false), stereo(false) {
 
     label = new std::string("Unnamed");
     threadQueueDemod = new DemodulatorThreadInputQueue;

src/demod/DemodulatorThread.cpp

@@ -186,6 +186,7 @@ void DemodulatorThread::threadMain() {
                     stereoSize = DEMOD_VIS_SIZE;
                 }
                 ati_vis->data.resize(stereoSize);
+                ati_vis->channels = stereo?2:1;
 
                 for (int i = 0; i < stereoSize / 2; i++) {
                     ati_vis->data[i] = (resampled_audio_output[i] - (resampled_audio_output_stereo[i]));

src/visual/ScopeCanvas.cpp

@@ -21,7 +21,7 @@ wxEND_EVENT_TABLE()
 
 ScopeCanvas::ScopeCanvas(wxWindow *parent, int *attribList) :
         wxGLCanvas(parent, wxID_ANY, attribList, wxDefaultPosition, wxDefaultSize,
-        wxFULL_REPAINT_ON_RESIZE), parent(parent), frameTimer(0) {
+        wxFULL_REPAINT_ON_RESIZE), parent(parent), frameTimer(0), divider(false) {
 
     glContext = new ScopeContext(this, &wxGetApp().GetContext(this));
     timer.start();
@@ -35,6 +35,10 @@ void ScopeCanvas::setWaveformPoints(std::vector<float> &waveform_points_in) {
     waveform_points = waveform_points_in;
 }
 
+void ScopeCanvas::setDivider(bool state) {
+    divider = state;
+}
+
 void ScopeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
     wxPaintDC dc(this);
     const wxSize ClientSize = GetClientSize();
@@ -42,7 +46,12 @@ void ScopeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
     glContext->SetCurrent(*this);
     glViewport(0, 0, ClientSize.x, ClientSize.y);
 
+    glContext->DrawBegin();
     glContext->Plot(waveform_points);
+    if (divider) {
+        glContext->DrawDivider();
+    }
+    glContext->DrawEnd();
 
     SwapBuffers();
 }

src/visual/ScopeCanvas.h

@@ -19,6 +19,7 @@ public:
     ~ScopeCanvas();
 
     void setWaveformPoints(std::vector<float> &waveform_points_in);
+    void setDivider(bool state);
 private:
     void OnPaint(wxPaintEvent& event);
 
@@ -29,6 +30,7 @@ private:
     ScopeContext *glContext;
     Timer timer;
     float frameTimer;
+    bool divider;
 // event table
 wxDECLARE_EVENT_TABLE();
 };

src/visual/ScopeContext.cpp

@@ -4,36 +4,47 @@
 
 ScopeContext::ScopeContext(ScopeCanvas *canvas, wxGLContext *sharedContext) :
         PrimaryGLContext(canvas, sharedContext) {
-    glDisable(GL_CULL_FACE);
+    glDisable (GL_CULL_FACE);
-    glDisable(GL_DEPTH_TEST);
+    glDisable (GL_DEPTH_TEST);
 
-    glMatrixMode(GL_PROJECTION);
+    glMatrixMode (GL_PROJECTION);
     glLoadIdentity();
 }
 
-void ScopeContext::Plot(std::vector<float> &points) {
+void ScopeContext::DrawBegin() {
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
-    glMatrixMode(GL_MODELVIEW);
+    glMatrixMode (GL_MODELVIEW);
     glLoadIdentity();
 
-    glDisable(GL_TEXTURE_2D);
+    glDisable (GL_TEXTURE_2D);
+}
 
+void ScopeContext::Plot(std::vector<float> &points) {
     glColor3f(1.0, 1.0, 1.0);
 
     if (points.size()) {
         glPushMatrix();
         glTranslatef(-1.0f, 0.0f, 0.0f);
         glScalef(2.0f, 2.0f, 1.0f);
-        glEnableClientState(GL_VERTEX_ARRAY);
+        glEnableClientState (GL_VERTEX_ARRAY);
         glVertexPointer(2, GL_FLOAT, 0, &points[0]);
         glDrawArrays(GL_LINE_STRIP, 0, points.size() / 2);
         glDisableClientState(GL_VERTEX_ARRAY);
         glPopMatrix();
     }
+}
 
-
+void ScopeContext::DrawEnd() {
     glFlush();
 
     CheckGLError();
 }
+
+void ScopeContext::DrawDivider() {
+    glColor3f(1.0, 1.0, 1.0);
+    glBegin(GL_LINES);
+    glVertex2f(0.0,-1.0);
+    glVertex2f(0.0,1.0);
+    glEnd();
+}

src/visual/ScopeContext.h

@@ -11,7 +11,10 @@ class ScopeContext: public PrimaryGLContext {
 public:
     ScopeContext(ScopeCanvas *canvas, wxGLContext *sharedContext);
 
+    void DrawBegin();
     void Plot(std::vector<float> &points);
+    void DrawDivider();
+    void DrawEnd();
 
 private:
 };