/// <summary>
/// Test for advanced decode function
/// </summary>
private void ButtonCropFlip_Click(object sender, EventArgs e)
{
try
{
using (OpenFileDialog openFileDialog = new System.Windows.Forms.OpenFileDialog())
{
openFileDialog.Filter = "WebP files (*.webp)|*.webp";
openFileDialog.FileName = "";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
string pathFileName = openFileDialog.FileName;
byte[] rawWebP = File.ReadAllBytes(pathFileName);
WebPDecoderOptions decoderOptions = new WebPDecoderOptions();
decoderOptions.use_cropping = 1;
decoderOptions.crop_top = 100; //Top beging of crop area
decoderOptions.crop_left = 100; //Left beging of crop area
decoderOptions.crop_height = 400; //Height of crop area
decoderOptions.crop_width = 400; //Width of crop area
decoderOptions.use_threads = 1; //Use multhreading
decoderOptions.flip = 1; //Flip the image
using (WebP webp = new WebP())
this.pictureBox.Image = webp.Decode(rawWebP, decoderOptions);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "\r\nIn WebPExample.buttonCrop_Click", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void GetImageFromStream(Stream stream, Enums.ImageType imageType, SourceList <BitmapSource> imageList, CancellationToken token)
{
using var memoryStream = new MemoryStream();
stream.CopyTo(memoryStream);
memoryStream.Seek(0, SeekOrigin.Begin);
token.ThrowIfCancellationRequested(); // start of expensive operation
Bitmap bitmap;
switch (imageType)
{
case Enums.ImageType.Default:
bitmap = new Bitmap(memoryStream);
break;
case Enums.ImageType.WebP:
byte[] b = memoryStream.ToArray();
using (WebP webp = new WebP())
bitmap = webp.Decode(b);
break;
default: throw new BadImageFormatException();
}
var bitmapSource = ConvertStreamToSource(bitmap);
bitmapSource.Freeze();
token.ThrowIfCancellationRequested(); // end
imageList.Add(bitmapSource);
bitmap.Dispose();
}
public static async Task <BitmapImage> LoadWebPImageAsync(string url)
{
try
{
if (string.IsNullOrEmpty(url))
{
return(null);
}
System.Net.WebClient wc = new System.Net.WebClient();
wc.Headers.Add("Referer", "https://hitomi.la/");
Byte[] MyData = await wc.DownloadDataTaskAsync(url);
wc.Dispose();
WebP webP = new WebP();
Bitmap bitmap = webP.Decode(MyData);
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
var bi = new BitmapImage();
bi.BeginInit();
bi.StreamSource = ms;
bi.CacheOption = BitmapCacheOption.OnLoad;
bi.EndInit();
return(bi);
}
catch
{
return(null);
}
}
/// <summary>
/// The Convert
/// </summary>
/// <param name="value">The <see cref="object"/></param>
/// <param name="targetType">The <see cref="Type"/></param>
/// <param name="parameter">The <see cref="object"/></param>
/// <param name="culture">The <see cref="CultureInfo"/></param>
/// <returns>The <see cref="object"/></returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value != null && value is Binary)
{
try
{
var ByteArray = value as Binary;
var bmp = new BitmapImage();
using (var webp = new WebP())
bmp = Convert(webp.Decode(ByteArray.ToArray()));
bmp.Freeze();
return(bmp);
}
catch (Exception)
{
}
}
return(null);
}
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (value == null)
{
return null;
}
try
{
var imagesBytes = (byte[]) value;
int hCode = imagesBytes.GetHashCode();
if (avatarCache.ContainsKey(hCode))
{
return avatarCache[hCode];
}
if (ImageUtils.GetImageFormat(imagesBytes) == Images.ImageFormat.Webp)
{
// WebP images
using (WebP webp = new WebP())
{
var bmp = webp.Decode(imagesBytes);
var bitmapImage = BitmapToBitmapImage(bmp);
avatarCache.Add(hCode, bitmapImage);
return bitmapImage;
}
}
else
{
// all other images
var bitmapImage = ConvertByteArrayToBitmapImage(imagesBytes);
avatarCache.Add(hCode, bitmapImage);
return bitmapImage;
}
}
catch(Exception)
{
return null;
}
}
public static async Task <byte[]> LoadUrlWebPImageAsync(string url)
{
if (string.IsNullOrEmpty(url))
{
return(null);
}
System.Net.WebClient wc = new System.Net.WebClient();
wc.Headers.Add("Referer", "https://" + new Uri(url).Host);
Byte[] MyData = await wc.DownloadDataTaskAsync(url);
wc.Dispose();
WebP webP = new WebP();
Bitmap bitmap = webP.Decode(MyData);
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
byte[] data = ms.ToArray();
ms.Dispose();
return(data);
}
public static Image ExtractImage(this byte[] rawBytes, bool isWebp)
{
if (rawBytes.Length == 0)
{
// if no image, return a dummy image
return(new Bitmap(1, 1));
}
if (isWebp)
{
using (var webp = new WebP())
{
return(webp.Decode(rawBytes));
}
}
else
{
using (var ms = new MemoryStream(rawBytes))
{
return(Image.FromStream(ms));
}
}
}
public override FileTypeMan.OpenResult Open(string path)
{
try
{
byte[] rawWebP = File.ReadAllBytes(path);
using (WebP webp = new WebP())
{
WebPDecoderOptions decoderOptions = new WebPDecoderOptions();
decoderOptions.use_threads = 1;
decoderOptions.alpha_dithering_strength = 100;
return(new FileTypeMan.OpenResult
{
Bmp = webp.Decode(rawWebP, decoderOptions)
});
}
}
catch
{
return(new FileTypeMan.OpenResult
{
ErrorMessage = TypeName + " - " + LangMan.Get("unable-open-file") + ": " + Path.GetFileName(path)
});
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
{
return(null);
}
try
{
var byteArray = value as byte[];
BitmapImage bmp;
using (var webp = new WebP())
{
bmp = Convert(webp.Decode(byteArray));
}
bmp.Freeze();
return(bmp);
}
catch (Exception)
{
}
return(null);
}
private Image ConvertFromWebP(Stream stream)
{
using (var webp = new WebP())
return(webp.Decode(GetBytes(stream)));
}
