/// <summary>
/// Finds the bounds and crops accordingly immediately
/// </summary>
private void SingleCrop()
{
bool updateCrop = false;
if (LastSwitchedAspectRatio < 0.1f)
{
LastDetectionResult = false;
return;
}
if (GUIGraphicsContext.RenderBlackImage)
{
LastDetectionResult = false;
return;
}
Bitmap frame = grabber.GetCurrentImage();
if (frame == null || frame.Height == 0 || frame.Width == 0)
{
LastDetectionResult = false;
return;
}
Rectangle bounds = new Rectangle();
if (!analyzer.FindBounds(frame, ref bounds))
{
LastDetectionResult = false;
frame.Dispose();
frame = null;
return;
}
double Hsym = 1.0;
double Vsym = 1.0;
if (bounds.Left > 20 || ((frame.Width - bounds.Right) > 20 && bounds.Left > 0))
{
Hsym = (double)(frame.Width - bounds.Right) / (double)bounds.Left;
}
if (bounds.Top > 20 || ((frame.Height - bounds.Bottom) > 20 && bounds.Top > 0))
{
Vsym = (double)(frame.Height - bounds.Bottom) / (double)bounds.Top;
}
if (currentSettings.verboseLog)
{
Log.Debug("ViewModeSwitcher: SingleCrop(), Detected BB -> left: {0}, right: {1}, top: {2}, bottom: {3}, Hsym: {4}, Vsym: {5}", bounds.Left, (frame.Width - bounds.Right), bounds.Top, (frame.Height - bounds.Bottom), Hsym, Vsym);
}
//Check for symmetry of black bars - asymmetric bars are probably a false detection
if ((Hsym > SymLimHigh) || (Hsym < SymLimLow) || (Vsym > SymLimHigh) || (Vsym < SymLimLow))
{
if (currentSettings.verboseLog)
{
Log.Debug("ViewModeSwitcher: SingleCrop(), Symmetry check failed");
}
if (NoMatchCropCount < 3)
{
NoMatchCropCount++;
LastDetectionResult = false;
}
frame.Dispose();
frame = null;
return;
}
//Use the smallest black bar size
double cropH = (double)(Math.Min(frame.Width - bounds.Right, bounds.Left));
double cropV = (double)(Math.Min(frame.Height - bounds.Bottom, bounds.Top));
//Check for a close match (within 1% of width/height) to the previous crop values
if ((((Math.Abs(cropV - LastRawCropV)) / (double)frame.Height) > 0.01) ||
(((Math.Abs(cropH - LastRawCropH)) / (double)frame.Width) > 0.01))
{
LastRawCropH = cropH;
LastRawCropV = cropV;
if (NoMatchCropCount < 3)
{
NoMatchCropCount++;
LastDetectionResult = false;
}
if (currentSettings.verboseLog)
{
Log.Debug("ViewModeSwitcher: SingleCrop(), No match with last crop : " + NoMatchCropCount);
}
frame.Dispose();
frame = null;
return;
}
LastRawCropH = cropH;
LastRawCropV = cropV;
//Work out actual picture aspect ratio
double newasp = ((double)frame.Width - cropH * 2) / ((double)frame.Height - cropV * 2);
bool checkPBv = false;
if (LastAnamorphFactor > 0.0)
{
//Correction for anamorphic video i.e. when pixel aspect ratio != video aspect ratio.
newasp *= LastAnamorphFactor;
//Check for letterbox/pillarbox video
if (LastSwitchedAspectRatio > 1.68 && LastSwitchedAspectRatio < 1.87)
{
if ((cropV / (double)frame.Height < 0.02) && newasp > 1.2 && newasp < 1.46)
{
checkPBv = true;
}
else if ((cropH / (double)frame.Width < 0.02) && newasp > 2.1 && newasp < 2.57)
{
checkPBv = true;
}
}
else if (LastSwitchedAspectRatio > 1.25 && LastSwitchedAspectRatio < 1.41)
{
if ((cropH / (double)frame.Width < 0.02) && newasp > 1.47 && newasp < 1.95)
{
checkPBv = true;
}
else if ((cropH / (double)frame.Width < 0.02) && newasp > 2.1 && newasp < 2.57)
{
checkPBv = true;
}
}
//After this correction, cropH value is in 'real' video pixels, not source pixels
cropH *= LastAnamorphFactor;
}
if (newasp < 1.1 || newasp > 2.7) // faulty crop
{
if (NoMatchCropCount < 3)
{
NoMatchCropCount++;
LastDetectionResult = false;
}
frame.Dispose();
frame = null;
return;
}
NoMatchCropCount = 0;
if (currentSettings.verboseLog)
{
Log.Debug("ViewModeSwitcher: SingleCrop(), Video AR: {0}, Cropped AR: {1}", LastSwitchedAspectRatio, newasp);
}
//Check for 'Pillar Boxed' 4:3 inside 16:9 video, and 'Letter Boxed' 16:9 inside 4:3 video
if (CheckRulesPBLB(-newasp, frame.Width, frame.Height, checkPBv))
{
if (LastSwitchedGeometry != Geometry.Type.NonLinearStretch)
{
//NonLinearStretch needs full side bar cropping, other modes don't
cropH = overScan;
cropV = overScan / LastSwitchedAspectRatio;
}
else
{
//Add overscan to NonLinearStretch
cropH += overScan;
cropV += overScan / LastSwitchedAspectRatio;
}
if (!isPBorLB) //Only update on first detection
{
updateCrop = true;
}
isPBorLB = true;
}
else //Normal video cropping
{
//Use overscan cropping if larger than detected black bars
cropH = Math.Max(cropH, overScan);
cropV = Math.Max(cropV, overScan / LastSwitchedAspectRatio);
if (isPBorLB)
{
if (currentSettings.verboseLog)
{
Log.Debug("ViewModeSwitcher: SingleCrop(), PillarBox -> Normal");
}
//Force CheckAspectRatios() update
updatePending = false;
isPBorLB = false;
LastSwitchedAspectRatio = 0.0;
frame.Dispose();
frame = null;
return;
}
isPBorLB = false;
}
if (currentSettings.verboseLog)
{
Log.Debug("ViewModeSwitcher: SingleCrop(), Real cropH: {0}, cropV: {1}", cropH, cropV);
}
if ((Math.Abs(cropH - fCropH) > 5) || (Math.Abs(cropV - fCropV) > 3))
{
fCropH = cropH;
fCropV = cropV;
updateCrop = true;
}
if (updateCrop)
{
updatePending = true;
}
frame.Dispose();
frame = null;
}
/// <summary>
/// Finds the bounds and crops accordingly immediately
/// </summary>
private void SingleCrop()
{
if (GUIGraphicsContext.RenderBlackImage)
{
LastDetectionResult = false;
return;
}
Bitmap frame = grabber.GetCurrentImage();
if (frame == null || frame.Height == 0 || frame.Width == 0)
{
LastDetectionResult = false;
return;
}
Rectangle bounds = new Rectangle();
if (!analyzer.FindBounds(frame, ref bounds))
{
LastDetectionResult = false;
return;
}
int cropH = Math.Min(GUIGraphicsContext.VideoSize.Width - bounds.Right, bounds.Left);
if (cropH < overScan)
{
cropH = overScan;
}
int cropV = Math.Min(GUIGraphicsContext.VideoSize.Height - bounds.Bottom, bounds.Top);
if (cropV < overScan / LastSwitchedAspectRatio)
{
cropV = (int)(overScan / LastSwitchedAspectRatio);
}
if (cropV > cropH / LastSwitchedAspectRatio)
{
cropV = (int)(cropH / LastSwitchedAspectRatio);
}
float newasp = (float)(frame.Width - cropH * 2) / (float)(frame.Height - cropV * 2);
if (newasp < 1) // faulty crop
{
cropH = overScan;
cropV = (int)(overScan / LastSwitchedAspectRatio);
}
if (cropH != cropSettings.Left || cropV != cropSettings.Top)
{
cropSettings.Top = cropV; //bounds.Top;
cropSettings.Bottom = cropV; // GUIGraphicsContext.VideoSize.Height - (bounds.Bottom + 1);
cropSettings.Left = cropH; // bounds.Left;
cropSettings.Right = cropH; // GUIGraphicsContext.VideoSize.Width - (bounds.Right + 1);
SetCropMode();
}
if (newasp >= 1)
{
float asp = (float)(frame.Width) / (float)(frame.Height);
//Log.Debug("asp: {0}, newasp: {1}", asp, newasp);
if (Math.Abs(asp - newasp) > 0.2 && LastSwitchedAspectRatio > 1.5)
{
SetAspectRatio("4:3 inside 16:9", Geometry.Type.NonLinearStretch);
}
}
frame.Dispose();
frame = null;
}
