public void SaveImageChunk(ImageChunk imageChunk, FileMode fileMode, string saveDir)
{
using (
var fs = new FileStream(Path.Combine(saveDir, imageChunk.SystemFilename),
fileMode))
{
var buffer = new byte[imageChunk.InputStream.Length];
imageChunk.InputStream.Read(buffer, 0, buffer.Length);
fs.Write(buffer, 0, buffer.Length);
}
}
public void ProcessImageChunk(ImageChunk imageChunk, string uploadedByUsername)
{
if (imageChunk.Chunk == null)
imageChunk.Chunk = 0;
if (imageChunk.Chunks == null)
imageChunk.Chunks = 0;
SaveImageMetadata(imageChunk, uploadedByUsername);
SaveImageChunk(imageChunk);
GenerateMipMaps(imageChunk);
}
//TODO: This needs refactoring and test coverage.
private void GenerateMipMaps(ImageChunk imageChunk)
{
if (imageChunk.Chunks == 0 || imageChunk.Chunk == (imageChunk.Chunks - 1))
{
ImageCodecInfo info = MipMapGenerator.ProcessCodecs("image/jpeg"); // todo: fix this
_mipMapGenerator.GenerateMipMap(
Path.Combine(_virtualPathResolver.ResolvePath(_settingRepository.OriginalImageRoot),
imageChunk.SystemFilename),
new MipMap {Codec = info, Width = 640, Height = 427},
_virtualPathResolver.ResolvePath(_settingRepository.MediumImageRoot),
imageChunk.SystemFilename);
}
}
private void SaveImageMetadata(ImageChunk imageChunk, string uploadedByUsername)
{
if (imageChunk.Chunk == 0)
{
var image = new Core.Image
{
Filename = imageChunk.SystemFilename,
SystemFilename = imageChunk.SystemFilename,
UploadDate = DateTime.UtcNow,
IsPublic = false,
ShowOnHomePage = false,
Deleted = false,
UploadedByUsername = uploadedByUsername
};
_imageRepository.Add(image);
}
}
public ActionResult Upload(int? chunk, int? chunks, string name)
{
var file = Request.Files[0];
if(file == null)
{
throw new InvalidOperationException("no file process");
}
var imageChunk = new ImageChunk
{
Chunk = chunk,
Chunks = chunks,
SystemFilename = name,
InputStream = file.InputStream
};
_imageProcessor.ProcessImageChunk(imageChunk, User.Identity.Name);
return Content("chunk uploaded", "text/plain");
}
private void SaveImageChunk(ImageChunk imageChunk)
{
_imageChunkSaver.SaveImageChunk(imageChunk, imageChunk.Chunk == 0 ? FileMode.Create : FileMode.Append,
_virtualPathResolver.ResolvePath(_settingRepository.OriginalImageRoot));
}
