/// <summary>
/// Gets the video mode from the hardware.
/// </summary>
/// <param name="videoMode"> Reference to be filled out by the Tango API.</param>
/// <returns> O if successful, otherwise it returns -1.</returns>
static public int LookupVideoMode(ref VideoModeAttributes videoMode)
{
int videoModeID = -1;
IntPtr videoModePtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(VideoModeAttributes)));
int numModes = Tango.HardwareParameters.HardwareParametersAPI.HardwareCameraNumberVideoModes();
if (numModes > 0)
{
// choose the very first video mode
Common.RetCodes res = (Common.RetCodes)Tango.HardwareParameters.HardwareParametersAPI.HardwareCameraGetVideoMode(0, videoModePtr);
if (res == Common.RetCodes.kCAPISuccess)
{
VideoModeAttributes supportedVideoMode = (VideoModeAttributes)Marshal.PtrToStructure(videoModePtr, typeof(VideoModeAttributes));
videoMode.frameRate = supportedVideoMode.frameRate;
videoMode.width = supportedVideoMode.width;
videoMode.height = supportedVideoMode.height;
videoModeID = 0;
}
else
{
DebugLogger.GetInstance.WriteToLog(DebugLogger.EDebugLevel.DEBUG_ERROR, "Failed to get video mode with error:" + res);
}
}
else
{
DebugLogger.GetInstance.WriteToLog(DebugLogger.EDebugLevel.DEBUG_ERROR, "Number of video modes:" + numModes);
}
Marshal.FreeHGlobal(videoModePtr);
return(videoModeID);
}
/// <summary>
/// Returns the resolution.
/// </summary>
/// <param name="userVideoMode"> Contains video mode attributes.</param>
/// <param name="screenResolution"> Resolution of the screen.</param>
/// <returns> Resolution.</returns>
public static Vector2 VisibleRect(VideoModeAttributes userVideoMode, Vector2 screenResolution)
{
float ha = (float)userVideoMode.width / screenResolution.x;
float va = (float)userVideoMode.height / screenResolution.y;
float windowAspect = screenResolution.x / screenResolution.y;
Vector2 resolution = new Vector2();
if (ha > va)
{
resolution.x = (float)userVideoMode.height * windowAspect;
resolution.y = (float)userVideoMode.height;
}
else
{
resolution.x = (float)userVideoMode.width;
resolution.y = (float)userVideoMode.width / windowAspect;
}
return(resolution);
}
