mirror of
https://github.com/cjcliffe/CubicSDR.git
synced 2026-10-08 00:00:23 -04:00
Initial experiment /w wxWidgets opengl view and sdr sampling.
Includes working rtl-sdr sampling thread test.
This commit is contained in:
Charles J. Cliffe
@@ -0,0 +1,453 @@
|
||||
#define OPENGL
|
||||
|
||||
//WX_GL_CORE_PROFILE 1
|
||||
//WX_GL_MAJOR_VERSION 3
|
||||
//WX_GL_MINOR_VERSION 2
|
||||
|
||||
#include "wx/wxprec.h"
|
||||
|
||||
#ifndef WX_PRECOMP
|
||||
#include "wx/wx.h"
|
||||
#endif
|
||||
|
||||
#if !wxUSE_GLCANVAS
|
||||
#error "OpenGL required: set wxUSE_GLCANVAS to 1 and rebuild the library"
|
||||
#endif
|
||||
|
||||
#include "CubicSDR.h"
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// constants
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// control ids
|
||||
enum {
|
||||
SpinTimer = wxID_HIGHEST + 1
|
||||
};
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// helper functions
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
static void CheckGLError() {
|
||||
GLenum errLast = GL_NO_ERROR;
|
||||
|
||||
for (;;) {
|
||||
GLenum err = glGetError();
|
||||
if (err == GL_NO_ERROR)
|
||||
return;
|
||||
|
||||
// normally the error is reset by the call to glGetError() but if
|
||||
// glGetError() itself returns an error, we risk looping forever here
|
||||
// so check that we get a different error than the last time
|
||||
if (err == errLast) {
|
||||
wxLogError
|
||||
(wxT("OpenGL error state couldn't be reset."));
|
||||
return;
|
||||
}
|
||||
|
||||
errLast = err;
|
||||
|
||||
wxLogError
|
||||
(wxT("OpenGL error %d"), err);
|
||||
}
|
||||
}
|
||||
|
||||
// function to draw the texture for cube faces
|
||||
static wxImage DrawDice(int size, unsigned num) {
|
||||
wxASSERT_MSG(num >= 1 && num <= 6, wxT("invalid dice index"));
|
||||
|
||||
const int dot = size / 16; // radius of a single dot
|
||||
const int gap = 5 * size / 32; // gap between dots
|
||||
|
||||
wxBitmap bmp(size, size);
|
||||
wxMemoryDC dc;
|
||||
dc.SelectObject(bmp);
|
||||
dc.SetBackground(*wxWHITE_BRUSH);
|
||||
dc.Clear();
|
||||
dc.SetBrush(*wxBLACK_BRUSH);
|
||||
|
||||
// the upper left and lower right points
|
||||
if (num != 1) {
|
||||
dc.DrawCircle(gap + dot, gap + dot, dot);
|
||||
dc.DrawCircle(size - gap - dot, size - gap - dot, dot);
|
||||
}
|
||||
|
||||
// draw the central point for odd dices
|
||||
if (num % 2) {
|
||||
dc.DrawCircle(size / 2, size / 2, dot);
|
||||
}
|
||||
|
||||
// the upper right and lower left points
|
||||
if (num > 3) {
|
||||
dc.DrawCircle(size - gap - dot, gap + dot, dot);
|
||||
dc.DrawCircle(gap + dot, size - gap - dot, dot);
|
||||
}
|
||||
|
||||
// finally those 2 are only for the last dice
|
||||
if (num == 6) {
|
||||
dc.DrawCircle(gap + dot, size / 2, dot);
|
||||
dc.DrawCircle(size - gap - dot, size / 2, dot);
|
||||
}
|
||||
|
||||
dc.SelectObject(wxNullBitmap);
|
||||
|
||||
return bmp.ConvertToImage();
|
||||
}
|
||||
|
||||
// ============================================================================
|
||||
// implementation
|
||||
// ============================================================================
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// PrimaryGLContext
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
PrimaryGLContext::PrimaryGLContext(wxGLCanvas *canvas) :
|
||||
wxGLContext(canvas) {
|
||||
SetCurrent(*canvas);
|
||||
|
||||
// set up the parameters we want to use
|
||||
glEnable(GL_CULL_FACE);
|
||||
glEnable(GL_DEPTH_TEST);
|
||||
glEnable(GL_LIGHTING);
|
||||
glEnable(GL_LIGHT0);
|
||||
glEnable(GL_TEXTURE_2D);
|
||||
|
||||
// add slightly more light, the default lighting is rather dark
|
||||
GLfloat ambient[] = { 0.5, 0.5, 0.5, 0.5 };
|
||||
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
|
||||
|
||||
// set viewing projection
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glFrustum(-0.5f, 0.5f, -0.5f, 0.5f, 1.0f, 3.0f);
|
||||
|
||||
// create the textures to use for cube sides: they will be reused by all
|
||||
// canvases (which is probably not critical in the case of simple textures
|
||||
// we use here but could be really important for a real application where
|
||||
// each texture could take many megabytes)
|
||||
glGenTextures(WXSIZEOF(m_textures), m_textures);
|
||||
|
||||
for (unsigned i = 0; i < WXSIZEOF(m_textures); i++) {
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[i]);
|
||||
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
||||
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
||||
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
||||
|
||||
const wxImage img(DrawDice(256, i + 1));
|
||||
|
||||
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, img.GetWidth(), img.GetHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, img.GetData());
|
||||
}
|
||||
|
||||
CheckGLError();
|
||||
}
|
||||
|
||||
void PrimaryGLContext::DrawRotatedCube(float xangle, float yangle) {
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
glTranslatef(0.0f, 0.0f, -2.0f);
|
||||
glRotatef(xangle, 1.0f, 0.0f, 0.0f);
|
||||
glRotatef(yangle, 0.0f, 1.0f, 0.0f);
|
||||
|
||||
// draw six faces of a cube of size 1 centered at (0, 0, 0)
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[0]);
|
||||
glBegin(GL_QUADS);
|
||||
glNormal3f(0.0f, 0.0f, 1.0f);
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex3f(0.5f, 0.5f, 0.5f);
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex3f(-0.5f, 0.5f, 0.5f);
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex3f(-0.5f, -0.5f, 0.5f);
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex3f(0.5f, -0.5f, 0.5f);
|
||||
glEnd();
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[1]);
|
||||
glBegin(GL_QUADS);
|
||||
glNormal3f(0.0f, 0.0f, -1.0f);
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex3f(-0.5f, -0.5f, -0.5f);
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex3f(-0.5f, 0.5f, -0.5f);
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex3f(0.5f, 0.5f, -0.5f);
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex3f(0.5f, -0.5f, -0.5f);
|
||||
glEnd();
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[2]);
|
||||
glBegin(GL_QUADS);
|
||||
glNormal3f(0.0f, 1.0f, 0.0f);
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex3f(0.5f, 0.5f, 0.5f);
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex3f(0.5f, 0.5f, -0.5f);
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex3f(-0.5f, 0.5f, -0.5f);
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex3f(-0.5f, 0.5f, 0.5f);
|
||||
glEnd();
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[3]);
|
||||
glBegin(GL_QUADS);
|
||||
glNormal3f(0.0f, -1.0f, 0.0f);
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex3f(-0.5f, -0.5f, -0.5f);
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex3f(0.5f, -0.5f, -0.5f);
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex3f(0.5f, -0.5f, 0.5f);
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex3f(-0.5f, -0.5f, 0.5f);
|
||||
glEnd();
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[4]);
|
||||
glBegin(GL_QUADS);
|
||||
glNormal3f(1.0f, 0.0f, 0.0f);
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex3f(0.5f, 0.5f, 0.5f);
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex3f(0.5f, -0.5f, 0.5f);
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex3f(0.5f, -0.5f, -0.5f);
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex3f(0.5f, 0.5f, -0.5f);
|
||||
glEnd();
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, m_textures[5]);
|
||||
glBegin(GL_QUADS);
|
||||
glNormal3f(-1.0f, 0.0f, 0.0f);
|
||||
glTexCoord2f(0, 0);
|
||||
glVertex3f(-0.5f, -0.5f, -0.5f);
|
||||
glTexCoord2f(1, 0);
|
||||
glVertex3f(-0.5f, -0.5f, 0.5f);
|
||||
glTexCoord2f(1, 1);
|
||||
glVertex3f(-0.5f, 0.5f, 0.5f);
|
||||
glTexCoord2f(0, 1);
|
||||
glVertex3f(-0.5f, 0.5f, -0.5f);
|
||||
glEnd();
|
||||
|
||||
glFlush();
|
||||
|
||||
CheckGLError();
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// CubicSDR: the application object
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
IMPLEMENT_APP(CubicSDR)
|
||||
|
||||
bool CubicSDR::OnInit() {
|
||||
if (!wxApp::OnInit())
|
||||
return false;
|
||||
|
||||
new AppFrame();
|
||||
|
||||
m_pThread = new SDRThread(this);
|
||||
if (m_pThread->Run() != wxTHREAD_NO_ERROR) {
|
||||
wxLogError
|
||||
("Can't create the thread!");
|
||||
delete m_pThread;
|
||||
m_pThread = NULL;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
int CubicSDR::OnExit() {
|
||||
delete m_glContext;
|
||||
|
||||
{
|
||||
wxCriticalSectionLocker enter(m_pThreadCS);
|
||||
if (m_pThread) {
|
||||
wxMessageOutputDebug().Printf("CubicSDR: deleting thread");
|
||||
if (m_pThread->Delete() != wxTHREAD_NO_ERROR) {
|
||||
wxLogError
|
||||
("Can't delete the thread!");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// while (1) {
|
||||
// { wxCriticalSectionLocker enter(m_pThreadCS);
|
||||
// if (!m_pThread)
|
||||
// break;
|
||||
// }
|
||||
// // wait for thread completion
|
||||
// wxThread::This()->Sleep(1);
|
||||
// }
|
||||
|
||||
return wxApp::OnExit();
|
||||
}
|
||||
|
||||
PrimaryGLContext& CubicSDR::GetContext(wxGLCanvas *canvas) {
|
||||
PrimaryGLContext *glContext;
|
||||
if (!m_glContext) {
|
||||
// Create the OpenGL context for the first mono window which needs it:
|
||||
// subsequently created windows will all share the same context.
|
||||
m_glContext = new PrimaryGLContext(canvas);
|
||||
}
|
||||
glContext = m_glContext;
|
||||
|
||||
glContext->SetCurrent(*canvas);
|
||||
|
||||
return *glContext;
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// TestGLCanvas
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
wxBEGIN_EVENT_TABLE(TestGLCanvas, wxGLCanvas) EVT_PAINT(TestGLCanvas::OnPaint)
|
||||
EVT_KEY_DOWN(TestGLCanvas::OnKeyDown)
|
||||
EVT_TIMER(SpinTimer, TestGLCanvas::OnSpinTimer)
|
||||
wxEND_EVENT_TABLE()
|
||||
|
||||
TestGLCanvas::TestGLCanvas(wxWindow *parent, int *attribList)
|
||||
// With perspective OpenGL graphics, the wxFULL_REPAINT_ON_RESIZE style
|
||||
// flag should always be set, because even making the canvas smaller should
|
||||
// be followed by a paint event that updates the entire canvas with new
|
||||
// viewport settings.
|
||||
:
|
||||
wxGLCanvas(parent, wxID_ANY, attribList, wxDefaultPosition, wxDefaultSize,
|
||||
wxFULL_REPAINT_ON_RESIZE), m_xangle(30.0), m_yangle(30.0), m_spinTimer(this, SpinTimer) {
|
||||
// if ( attribList )
|
||||
// {
|
||||
// int i = 0;
|
||||
// while ( attribList[i] != 0 )
|
||||
// {
|
||||
// ++i;
|
||||
// }
|
||||
// }
|
||||
}
|
||||
|
||||
void TestGLCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
|
||||
// This is required even though dc is not used otherwise.
|
||||
wxPaintDC dc(this);
|
||||
|
||||
// Set the OpenGL viewport according to the client size of this canvas.
|
||||
// This is done here rather than in a wxSizeEvent handler because our
|
||||
// OpenGL rendering context (and thus viewport setting) is used with
|
||||
// multiple canvases: If we updated the viewport in the wxSizeEvent
|
||||
// handler, changing the size of one canvas causes a viewport setting that
|
||||
// is wrong when next another canvas is repainted.
|
||||
const wxSize ClientSize = GetClientSize();
|
||||
|
||||
PrimaryGLContext& canvas = wxGetApp().GetContext(this);
|
||||
glViewport(0, 0, ClientSize.x, ClientSize.y);
|
||||
|
||||
// Render the graphics and swap the buffers.
|
||||
canvas.DrawRotatedCube(m_xangle, m_yangle);
|
||||
|
||||
SwapBuffers();
|
||||
}
|
||||
|
||||
void TestGLCanvas::Spin(float xSpin, float ySpin) {
|
||||
m_xangle += xSpin;
|
||||
m_yangle += ySpin;
|
||||
|
||||
Refresh(false);
|
||||
}
|
||||
|
||||
void TestGLCanvas::OnKeyDown(wxKeyEvent& event) {
|
||||
float angle = 5.0;
|
||||
|
||||
switch (event.GetKeyCode()) {
|
||||
case WXK_RIGHT:
|
||||
Spin(0.0, -angle);
|
||||
break;
|
||||
|
||||
case WXK_LEFT:
|
||||
Spin(0.0, angle);
|
||||
break;
|
||||
|
||||
case WXK_DOWN:
|
||||
Spin(-angle, 0.0);
|
||||
break;
|
||||
|
||||
case WXK_UP:
|
||||
Spin(angle, 0.0);
|
||||
break;
|
||||
|
||||
case WXK_SPACE:
|
||||
if (m_spinTimer.IsRunning())
|
||||
m_spinTimer.Stop();
|
||||
else
|
||||
m_spinTimer.Start(1);
|
||||
break;
|
||||
|
||||
default:
|
||||
event.Skip();
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
void TestGLCanvas::OnSpinTimer(wxTimerEvent& WXUNUSED(event)) {
|
||||
Spin(0.0, 4.0);
|
||||
}
|
||||
|
||||
wxString glGetwxString(GLenum name) {
|
||||
const GLubyte *v = glGetString(name);
|
||||
if (v == 0) {
|
||||
// The error is not important. It is GL_INVALID_ENUM.
|
||||
// We just want to clear the error stack.
|
||||
glGetError();
|
||||
|
||||
return wxString();
|
||||
}
|
||||
|
||||
return wxString((const char*) v);
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// AppFrame: main application window
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
wxBEGIN_EVENT_TABLE(AppFrame, wxFrame) EVT_MENU(wxID_NEW, AppFrame::OnNewWindow)
|
||||
EVT_MENU(wxID_CLOSE, AppFrame::OnClose)
|
||||
wxEND_EVENT_TABLE()
|
||||
|
||||
AppFrame::AppFrame() :
|
||||
wxFrame(NULL, wxID_ANY, wxT("CubicSDR")) {
|
||||
|
||||
new TestGLCanvas(this, NULL);
|
||||
|
||||
SetIcon(wxICON(sample));
|
||||
|
||||
// Make a menubar
|
||||
wxMenu *menu = new wxMenu;
|
||||
menu->Append(wxID_NEW);
|
||||
menu->AppendSeparator();
|
||||
menu->Append(wxID_CLOSE);
|
||||
wxMenuBar *menuBar = new wxMenuBar;
|
||||
menuBar->Append(menu, wxT("&Cube"));
|
||||
|
||||
SetMenuBar(menuBar);
|
||||
|
||||
CreateStatusBar();
|
||||
|
||||
SetClientSize(400, 400);
|
||||
Show();
|
||||
|
||||
// static const int attribs[] = { WX_GL_RGBA, WX_GL_DOUBLEBUFFER, 0 };
|
||||
// wxLogStatus("Double-buffered display %s supported", wxGLCanvas::IsDisplaySupported(attribs) ? "is" : "not");
|
||||
// ShowFullScreen(true);
|
||||
}
|
||||
|
||||
void AppFrame::OnClose(wxCommandEvent& WXUNUSED(event)) {
|
||||
// true is to force the frame to close
|
||||
Close(true);
|
||||
}
|
||||
|
||||
void AppFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event)) {
|
||||
new AppFrame();
|
||||
}
|
||||
Reference in New Issue
Block a user