private static ImageCodecInfo[] GetInstalledCodecs(GetCodecDelegate getMethod)
{
ImagingFactory factory = new ImagingFactoryClass();
uint count;
IntPtr pCodec;
//int hResult = factory.GetInstalledEncoders(out count, out pCodec);
int hResult = getMethod(out count, out pCodec);
if (hResult != 0)
{
throw new System.ComponentModel.Win32Exception(hResult);
}
ImageCodecInfo info = new ImageCodecInfo();
List <ImageCodecInfo> list = new List <ImageCodecInfo>();
for (int i = 0; i < count; i++)
{
IntPtr p = new IntPtr(pCodec.ToInt32() + (i * Marshal.SizeOf(info)));
info = (ImageCodecInfo)Marshal.PtrToStructure(p, typeof(ImageCodecInfo));
list.Add(info);
}
return(list.ToArray());
}
/// <summary>
/// Читает угол поворота из EXIF
/// </summary>
/// <param name="file"></param>
/// <param name="exifRotationAngle"></param>
public static void ReadRotationAngleFromEXIF(string file, out RotationAngle exifRotationAngle)
{
exifRotationAngle = RotationAngle.Zero;
using (StreamOnFile newStreamOnFile = new StreamOnFile(file))
{
IImageDecoder newIImageDecoder;
OpenNETCF.Drawing.Imaging.IImagingFactory newImagingFactory = new OpenNETCF.Drawing.Imaging.ImagingFactoryClass();
int r = newImagingFactory.CreateImageDecoder(newStreamOnFile, DecoderInitFlag.DecoderInitFlagNone, out newIImageDecoder);
// Ниже используется своя функция обработки EXIF, так как на Philips попытка проверить
// jpeg из-за некорректных данных рушится в COM. Это случается из-за параметра DecoderInitFlag.DecoderInitFlagNone
// ImageProperty[] items = ImageUtils.GetAllProperties(newIImageDecoder);
ImageProperty[] items = GetAllPropertiesInternal(newIImageDecoder);
if (items.Length == 0)
{
newImagingFactory.CreateImageDecoder(newStreamOnFile, DecoderInitFlag.DecoderInitFlagBuiltIn1st, out newIImageDecoder);
items = GetAllPropertiesInternal(newIImageDecoder);
}
foreach (ImageProperty item in items)
{
if (item.Id == ImageTag.TAG_ORIENTATION)
{
try
{
switch (Convert.ToInt16(item.GetValue()))
{
case 3:
exifRotationAngle = RotationAngle.Clockwise180;
break;
case 6:
exifRotationAngle = RotationAngle.Clockwise90;
break;
case 8:
exifRotationAngle = RotationAngle.Clockwise270;
break;
default:
throw new Exception();
break;
}
}
catch (Exception)
{
exifRotationAngle = RotationAngle.Zero;
}
}
}
}
}
/// <summary>
/// Loads specified image property from the given image
/// </summary>
/// <param name="imagePath">path to the image file</param>
/// <param name="property">Property tag</param>
/// <returns>Property</returns>
public static ImageProperty LoadProperty(string imagePath, ImageTag property)
{
if (imagePath == null)
{
throw new ArgumentNullException();
}
StreamOnFile st = new StreamOnFile(imagePath);
IImageDecoder decoder = null;
ImagingFactory factory = new ImagingFactoryClass();
factory.CreateImageDecoder(st, DecoderInitFlag.DecoderInitFlagNone, out decoder);
return(LoadProperty(decoder, property));
}
static public IBitmapImage CreateThumbnail(Stream stream, Size size)
{
if (stream == null)
{
throw new ArgumentNullException();
}
ImagingFactory factory = new ImagingFactoryClass();
IImage image, imageThumb;
factory.CreateImageFromStream(new StreamOnFile(stream), out image);
image.GetThumbnail((uint)size.Width, (uint)size.Height, out imageThumb);
IBitmapImage imageBitmap = null;
ImageInfo ii;
image.GetImageInfo(out ii);
factory.CreateBitmapFromImage(image, (uint)size.Width, (uint)size.Height, ii.PixelFormat, InterpolationHint.InterpolationHintDefault, out imageBitmap);
return(imageBitmap);
}
static public IBitmapImage BitmapToIImageBitmap(Bitmap bitmap)
{
if (bitmap == null)
{
throw new ArgumentNullException();
}
ImagingFactory factory = new ImagingFactoryClass();
System.Drawing.Imaging.BitmapData bd = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
IBitmapImage imageBitmap = null;
factory.CreateNewBitmap((uint)bd.Width, (uint)bd.Height, bd.PixelFormat, out imageBitmap);
BitmapDataInternal bdi = new BitmapDataInternal();
RECT rc = new RECT(0, 0, bd.Width, bd.Height);
imageBitmap.LockBits(rc, (int)ImageLockMode.WriteOnly, bd.PixelFormat, ref bdi);
int cb = bdi.Stride * bdi.Height;
CopyMemory(bdi.Scan0, bd.Scan0, cb);
bitmap.UnlockBits(bd);
imageBitmap.UnlockBits(ref bdi);
return(imageBitmap);
}
/// <summary>
/// Читает угол поворота из EXIF
/// </summary>
/// <param name="file"></param>
/// <param name="exifRotationAngle"></param>
public static void ReadRotationAngleFromEXIF(string file, out RotationAngle exifRotationAngle)
{
exifRotationAngle = RotationAngle.Zero;
using (StreamOnFile newStreamOnFile = new StreamOnFile(file))
{
IImageDecoder newIImageDecoder;
OpenNETCF.Drawing.Imaging.IImagingFactory newImagingFactory = new OpenNETCF.Drawing.Imaging.ImagingFactoryClass();
int r = newImagingFactory.CreateImageDecoder(newStreamOnFile, DecoderInitFlag.DecoderInitFlagNone, out newIImageDecoder);
// Ниже используется своя функция обработки EXIF, так как на Philips попытка проверить
// jpeg из-за некорректных данных рушится в COM. Это случается из-за параметра DecoderInitFlag.DecoderInitFlagNone
// ImageProperty[] items = ImageUtils.GetAllProperties(newIImageDecoder);
ImageProperty[] items = GetAllPropertiesInternal(newIImageDecoder);
if (items.Length == 0)
{
newImagingFactory.CreateImageDecoder(newStreamOnFile, DecoderInitFlag.DecoderInitFlagBuiltIn1st, out newIImageDecoder);
items = GetAllPropertiesInternal(newIImageDecoder);
}
foreach (ImageProperty item in items)
{
if (item.Id == ImageTag.TAG_ORIENTATION)
{
try
{
switch (Convert.ToInt16(item.GetValue()))
{
case 3:
exifRotationAngle = RotationAngle.Clockwise180;
break;
case 6:
exifRotationAngle = RotationAngle.Clockwise90;
break;
case 8:
exifRotationAngle = RotationAngle.Clockwise270;
break;
default:
throw new Exception();
break;
}
}
catch (Exception)
{
exifRotationAngle = RotationAngle.Zero;
}
}
}
}
}
/// <summary>
/// Gets all of the installed imaging decoders on the device
/// </summary>
/// <returns></returns>
public static ImageCodecInfo[] GetInstalledDecoders()
{
ImagingFactory factory = new ImagingFactoryClass();
return(GetInstalledCodecs(factory.GetInstalledDecoders));
}
