/// <summary>
/// Finds output geometry for the given preview settings and title.
/// </summary>
/// <param name="settings">
/// The preview settings.
/// </param>
/// <param name="title">
/// Information on the title to consider.
/// </param>
/// <returns>
/// Geometry Information
/// </returns>
public static Geometry CreateGeometry(PreviewSettings settings, SourceVideoInfo title)
{
int settingMode = settings.KeepDisplayAspect ? 0x04 : 0;
// Sanitize the Geometry First.
AnamorphicGeometry anamorphicGeometry = new AnamorphicGeometry
{
SourceGeometry = new Geometry
{
Width = title.Resolution.Width,
Height = title.Resolution.Height,
PAR = new PAR { Num = title.ParVal.Width, Den = title.ParVal.Height }
},
DestSettings = new DestSettings
{
AnamorphicMode = (int)settings.Anamorphic,
Geometry =
{
Width = settings.Width,
Height = settings.Height,
PAR = new PAR
{
Num = settings.Anamorphic != Anamorphic.Custom ? title.ParVal.Width : settings.PixelAspectX,
Den = settings.Anamorphic != Anamorphic.Custom ? title.ParVal.Height : settings.PixelAspectY,
}
},
Keep = settingMode,
Crop = new List<int> { settings.Cropping.Top, settings.Cropping.Bottom, settings.Cropping.Left, settings.Cropping.Right },
Modulus = settings.Modulus ?? 16,
MaxWidth = settings.MaxWidth,
MaxHeight = settings.MaxHeight,
ItuPAR = false
}
};
if (settings.Anamorphic == Anamorphic.Custom)
{
anamorphicGeometry.DestSettings.Geometry.PAR = new PAR { Num = settings.PixelAspectX, Den = settings.PixelAspectY };
}
else
{
anamorphicGeometry.DestSettings.Geometry.PAR = new PAR { Num = title.ParVal.Width, Den = title.ParVal.Height };
}
return HandBrakeUtils.GetAnamorphicSize(anamorphicGeometry);
}
/// <summary>
/// Get a Preview image for the current job and preview number.
/// </summary>
/// <param name="job">
/// The job.
/// </param>
/// <param name="preview">
/// The preview.
/// </param>
/// <param name="configuraiton">
/// The configuraiton.
/// </param>
/// <returns>
/// The <see cref="BitmapImage"/>.
/// </returns>
public BitmapImage GetPreview(EncodeTask job, int preview, HBConfiguration configuraiton)
{
if (this.instance == null)
{
return null;
}
BitmapImage bitmapImage = null;
try
{
PreviewSettings settings = new PreviewSettings
{
Cropping = new Cropping(job.Cropping),
MaxWidth = job.MaxWidth ?? 0,
MaxHeight = job.MaxHeight ?? 0,
KeepDisplayAspect = job.KeepDisplayAspect,
TitleNumber = job.Title,
Anamorphic = job.Anamorphic,
Modulus = job.Modulus,
Width = job.Width ?? 0,
Height = job.Height ?? 0,
PixelAspectX = job.PixelAspectX,
PixelAspectY = job.PixelAspectY
};
bitmapImage = this.instance.GetPreview(settings, preview);
}
catch (AccessViolationException e)
{
Console.WriteLine(e);
}
return bitmapImage;
}
public BitmapImage GetPreview(PreviewSettings settings, int previewNumber)
{
SourceTitle title = this.Titles.TitleList.FirstOrDefault(t => t.Index == settings.TitleNumber);
// Create the Expected Output Geometry details for libhb.
hb_geometry_settings_s uiGeometry = new hb_geometry_settings_s
{
crop = new[] { settings.Cropping.Top, settings.Cropping.Bottom, settings.Cropping.Left, settings.Cropping.Right },
itu_par = 0,
keep = (int)AnamorphicFactory.KeepSetting.HB_KEEP_WIDTH + (settings.KeepDisplayAspect ? 0x04 : 0), // TODO Keep Width?
maxWidth = settings.MaxWidth,
maxHeight = settings.MaxHeight,
mode = (int)(hb_anamorphic_mode_t)settings.Anamorphic,
modulus = settings.Modulus ?? 16,
geometry = new hb_geometry_s
{
height = settings.Height,
width = settings.Width,
par = settings.Anamorphic != Anamorphic.Custom
? new hb_rational_t { den = title.Geometry.PAR.Den, num = title.Geometry.PAR.Num }
: new hb_rational_t { den = settings.PixelAspectY, num = settings.PixelAspectX }
}
};
// Sanitize the input.
Geometry resultGeometry = AnamorphicFactory.CreateGeometry(settings, new SourceVideoInfo(new Size(title.Geometry.Width, title.Geometry.Height), new Size(title.Geometry.PAR.Num, title.Geometry.PAR.Den)));
int width = resultGeometry.Width * resultGeometry.PAR.Num / resultGeometry.PAR.Den;
int height = resultGeometry.Height;
uiGeometry.geometry.width = width;
uiGeometry.geometry.height = height;
uiGeometry.geometry.par.num = settings.PixelAspectX;
uiGeometry.geometry.par.den = settings.PixelAspectY;
// Fetch the image data from LibHb
IntPtr resultingImageStuct = HBFunctions.hb_get_preview2(this.hbHandle, settings.TitleNumber, previewNumber, ref uiGeometry, 0);
hb_image_s image = InteropUtilities.ToStructureFromPtr<hb_image_s>(resultingImageStuct);
// Copy the filled image buffer to a managed array.
int stride_width = image.plane[0].stride;
int stride_height = image.plane[0].height_stride;
int imageBufferSize = stride_width * stride_height; // int imageBufferSize = outputWidth * outputHeight * 4;
byte[] managedBuffer = new byte[imageBufferSize];
Marshal.Copy(image.plane[0].data, managedBuffer, 0, imageBufferSize);
var bitmap = new Bitmap(width, height);
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format32bppRgb);
IntPtr ptr = bitmapData.Scan0; // Pointer to the first pixel.
for (int i = 0; i < image.height; i++)
{
try
{
Marshal.Copy(managedBuffer, i * stride_width, ptr, stride_width);
ptr = IntPtr.Add(ptr, width * 4);
}
catch (Exception exc)
{
Debug.WriteLine(exc); // In theory, this will allow a partial image display if this happens. TODO add better logging of this.
}
}
bitmap.UnlockBits(bitmapData);
// Close the image so we don't leak memory.
IntPtr nativeJobPtrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)));
Marshal.WriteIntPtr(nativeJobPtrPtr, resultingImageStuct);
HBFunctions.hb_image_close(nativeJobPtrPtr);
Marshal.FreeHGlobal(nativeJobPtrPtr);
// Create a Bitmap Image for display.
using (var memoryStream = new MemoryStream())
{
try
{
bitmap.Save(memoryStream, ImageFormat.Bmp);
}
finally
{
bitmap.Dispose();
}
var wpfBitmap = new BitmapImage();
wpfBitmap.BeginInit();
wpfBitmap.CacheOption = BitmapCacheOption.OnLoad;
wpfBitmap.StreamSource = memoryStream;
wpfBitmap.EndInit();
wpfBitmap.Freeze();
return wpfBitmap;
}
}
/// <summary>
/// Get a Preview image for the current job and preview number.
/// </summary>
/// <param name="job">
/// The job.
/// </param>
/// <param name="preview">
/// The preview.
/// </param>
/// <param name="configuraiton">
/// The configuraiton.
/// </param>
/// <returns>
/// The <see cref="BitmapImage"/>.
/// </returns>
public BitmapImage GetPreview(EncodeTask job, int preview, HBConfiguration configuraiton)
{
if (this.instance == null)
{
return null;
}
BitmapImage bitmapImage = null;
try
{
PreviewSettings settings = new PreviewSettings(job);
bitmapImage = this.instance.GetPreview(settings, preview);
}
catch (AccessViolationException e)
{
Console.WriteLine(e);
}
return bitmapImage;
}
