public void GetImage(WebData webData, long imageID, bool thumb = false)
{
try
{
MDBImage img = mdb.Images.TryGetStruct(imageID);
MDBFile file = mdb.Files.TryGetStruct(img.FileID);
if (file.ID > 0)
{
string fullPath = file.GetFullPath(mdb);
if (thumb)
{
if (TryGetThumb(webData, img, fullPath))
{
return;
}
}
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(fullPath, "/mdb/image/get"), File.ReadAllBytes(fullPath), img.MimeType);
webData.Answer.AllowCompression = false;
webData.Answer.SetCacheTime(TimeSpan.FromHours(1));
return;
}
}
catch { }
webData.Result.AddMessage(webData.Method, WebError.NotFound, "Image {0} cannot be found!", imageID);
}
public void GetAlbumReplacementImage(WebData webData, long id, bool thumb)
{
if (id < 0 || id >= ReplaceAlbumImages.Length)
{
throw new ArgumentOutOfRangeException(nameof(id));
}
var replacementImage = ReplaceAlbumImages[id];
if (thumb)
{
webData.Answer = WebAnswer.Raw(
webData.Request,
WebMessage.Create(webData.Method, replacementImage.FileName),
replacementImage.ThumbData,
replacementImage.MimeType);
}
else
{
webData.Answer = WebAnswer.Raw(
webData.Request,
WebMessage.Create(webData.Method, replacementImage.FileName),
replacementImage.Data,
replacementImage.MimeType);
}
webData.Answer.AllowCompression = false;
webData.Answer.Headers.Add("MDBReplacementImage", "NotAvailable");
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
}
bool TryGetThumb(WebData webData, MDBImage img, string fileName)
{
try
{
//try to load thumb
var hash = Base32.Safe.Encode(Hash.FromString(Hash.Type.SHA256, fileName));
string thumbFileName = FileSystem.Combine(mdb.CacheFolder, "Thumbs", hash + ".jpg");
var mime = MimeTypes.FromExtension(".jpg");
if (File.Exists(thumbFileName))
{
try
{
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(webData.Method, thumbFileName), File.ReadAllBytes(thumbFileName), mime);
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
return(true);
}
catch { /*file access error, writing in progress ?, wait for lock and retry*/ }
}
//wait until last thumb generation is finished
byte[] data;
lock (ThumbCreateSyncRoot)
{
//do a second check after lock is released...
if (File.Exists(thumbFileName))
{
try
{
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(webData.Method, thumbFileName), File.ReadAllBytes(thumbFileName), mime);
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
return(true);
}
catch { /*file access error, recreate thumb*/ }
}
//generate thumb
using (var bmp = Bitmap32.FromFile(fileName))
{
data = WebImage.RenderThumb(bmp, thumbFileName);
}
}
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(webData.Method, thumbFileName), data, mime);
webData.Answer.AllowCompression = false;
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
return(true);
}
catch (Exception ex)
{
this.LogError(ex, "Could not load / create thumb for {0}", fileName);
}
return(false);
}
void Draw(WebData data, int color, int nose, int eyes, int mouth, int face, int rotate)
{
using (var stream = new MemoryStream())
using (var bmp = new Bitmap32(AvatarSize, AvatarSize))
{
var faceColor = ARGB.FromHSI(color / 256.0f, 1, 1);
DrawFace(face, faceColor, faces, bmp);
DrawEyes(eyes, this.eyes, bmp);
DrawMouth(mouth, mouths, bmp);
DrawNose(nose, noses, bmp);
using (var result = new Bitmap32(AvatarSize, AvatarSize))
{
result.Draw(bmp, 0, 0, new Translation()
{
Rotation = ((rotate % 16) - 7) * 0.02f
});
result.Save(stream);
}
var msg = WebMessage.Create(data.Method, "Avatar created");
data.Answer = WebAnswer.Raw(data.Request, msg, stream.GetBuffer(), "image/png");
data.Answer.AllowCompression = false;
data.Answer.SetCacheTime(TimeSpan.FromDays(1));
}
}