Dear List,
I am trying to draw an image inside QCPlugin execute function with the
following code
- (BOOL) execute:(id<QCPlugInContext>)context atTime:(NSTimeInterval)time
withArguments:(NSDictionary*)arguments
{
CGLContextObj cgl_ctx = [context CGLContextObj];
GLint saveMode;
GLenum error;
if(cgl_ctx == NULL)
return NO;
CVImageBufferRef pixelBuffer = deckLinkController->getFrameBuffer();
// Save and set the modelview matrix.
glGetIntegerv(GL_MATRIX_MODE, &saveMode);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
// Translate the matrix
glTranslatef(self.inputX, self.inputY, self.inputZ);
glScaled(self.inputWidth, self.inputHeight, 1.0);
// Rotate the matrix
glRotatef(self.inputAngle, 0.0, 1.0, 0.0);
if(pixelBuffer)
{
CIImage* image = [CIImage imageWithCVImageBuffer:pixelBuffer];
NSLog(@"%0.0f, %0.0f", [context bounds].size.width, [context bounds].size.
height);
[ciContext drawImage:image inRect:CGRectMake(0, 0, [context bounds].size.
width, [context bounds].size.height) fromRect:[image extent]];
}
// Restore the modelview matrix.
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(saveMode);
// Check for OpenGL errors and log them if there are errors.
if(error = glGetError())
[context logMessage:@"OpenGL error %04X", error];
return (error ? NO : YES);
}
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