public static Response FromPartialStream(this IResponseFormatter response, Request request, Stream stream,
string contentType)
{
// Store the len
var len = stream.Length;
// Create the response now
var res = response.FromStream(stream, contentType)
.WithHeader("Connection", "Keep-alive")
.WithHeader("Accept-ranges", "Bytes");
// Use the partial status code
res.StatusCode = HttpStatusCode.PartialContent;
long startPos = 0;
foreach (var s in request.Headers["Range"])
{
var start = s.Split('=')[1];
var m = Regex.Match(start, @"(\d+)-(\d+)?");
start = m.Groups[1].Value;
var end = len - 1;
if (!string.IsNullOrWhiteSpace(m.Groups[2]?.Value))
{
end = Convert.ToInt64(m.Groups[2].Value);
}
startPos = Convert.ToInt64(start);
var length = len - startPos;
res.WithHeader("Content-range", "Bytes " + start + "-" + end + "/" + len);
res.WithHeader("Content-length", length.ToString(CultureInfo.InvariantCulture));
}
stream.Seek(startPos, SeekOrigin.Begin);
return(res);
}
public static Response GetIcon(string key, IResponseFormatter response)
{
var image = ComicBook.PublisherIcons.GetImage(key);
if (image == null)
{
return(response.AsRedirect("/original/Views/spacer.png"));
}
return(response.FromStream(GetBytesFromImage(image), MimeTypes.GetMimeType(".jpg")));
}
public static Response WriteTo(this IMetadataFormatter formatter, IResponseFormatter response)
{
var format = response.Context.GetResponseFormat();
if (format == ResponseFormat.Html)
{
return HttpStatusCode.NoContent;
}
var representation = format == ResponseFormat.Json ? "json" : "xml";
var encodedString = formatter.GetRepresentation(representation);
var stream = new MemoryStream(Encoding.UTF8.GetBytes(encodedString));
return response.FromStream(stream, Euclid.Common.Extensions.MimeTypes.GetByExtension(representation));
}
public static Response AsAttachment(
this IResponseFormatter formatter,
Stream stream,
string attachmentName,
string contentType = "application/text")
{
Require.ArgumentNotNull(formatter, nameof(formatter));
Require.ArgumentNotNullEmpty(attachmentName, nameof(attachmentName));
Require.ArgumentNotNullEmpty(contentType, nameof(contentType));
var response = formatter.FromStream(stream, contentType);
response.Headers.Add("Content-Disposition", $"attachment; filename={attachmentName}");
response.Headers.Add("Cache-Control", "no-cache");
response.StatusCode = HttpStatusCode.OK;
return(response);
}
public static Response GetPageImage(Guid id, int page, int width, int height, IResponseFormatter response)
{
// Restrict access to the FreeImage library to one thread at a time.
lock (lockThis)
{
int max_width = 0;
int max_height = 0;
bool thumbnail = !(width == -1 && height == -1);
bool processed = false;
string filename = string.Format("{0}-p{1}-w{2}-h{3}.jpg", id, page, width, height);
if (thumbnail)
{
MemoryStream cachestream = ImageCache.Instance.LoadFromCache(filename, true, false);
// Cached thumbnails are assumed to be in the correct format and adhere to the size/format restrictions of the ipad.
if (cachestream != null)
{
return(response.FromStream(cachestream, MimeTypes.GetMimeType(".jpg")));
}
}
else
{
// Check if a processed (rescaled and/or progressive) image is cached.
string processed_filename = string.Format("{0}-p{1}-processed.jpg", id, page);
MemoryStream cachestream = ImageCache.Instance.LoadFromCache(processed_filename, false, false);
if (cachestream != null)
{
return(response.FromStream(cachestream, MimeTypes.GetMimeType(".jpg")));
}
}
MemoryStream stream = null;
// Check if original image is in the cache.
string org_filename = string.Format("{0}-p{1}.jpg", id, page);
stream = ImageCache.Instance.LoadFromCache(org_filename, false, false);
if (stream == null)
{
// Image is not in the cache, get it via ComicRack.
var bytes = GetPageImageBytes(id, page);
if (bytes == null)
{
return(HttpStatusCode.NotFound);
}
stream = new MemoryStream(bytes);
// Always save the original page to the cache
ImageCache.Instance.SaveToCache(org_filename, stream, false, false);
}
stream.Seek(0, SeekOrigin.Begin);
Bitmap bitmap = new Bitmap(stream, false);
int bitmap_width = (int)bitmap.Width;
int bitmap_height = (int)bitmap.Height;
if (ImageCache.Instance.use_max_dimension)
{
int mw, mh;
if (bitmap_width >= bitmap_height)
{
mw = ImageCache.Instance.max_dimension_long;
mh = ImageCache.Instance.max_dimension_short;
}
else
{
mw = ImageCache.Instance.max_dimension_short;
mh = ImageCache.Instance.max_dimension_long;
}
if (bitmap_width > mw || bitmap_height > mh)
{
double scaleW = (double)mw / (double)bitmap_width;
double scaleH = (double)mh / (double)bitmap_height;
double scale = Math.Min(scaleW, scaleH);
max_width = (int)Math.Floor(scale * bitmap_width);
max_height = (int)Math.Floor(scale * bitmap_height);
}
else
{
max_width = bitmap_width;
max_height = bitmap_height;
}
}
else
// Check if the image dimensions exceeds the maximum image dimensions
if ((bitmap_width * bitmap_height) > ImageCache.Instance.maximum_imagesize)
{
max_width = (int)Math.Floor(Math.Sqrt((double)bitmap_width / (double)bitmap_height * (double)ImageCache.Instance.maximum_imagesize));
max_height = (int)Math.Floor((double)max_width * (double)bitmap_height / (double)bitmap_width);
}
else
{
max_width = bitmap_width;
max_height = bitmap_height;
}
// Calculate the dimensions of the returned image.
int result_width = width;
int result_height = height;
if (result_width == -1 && result_height == -1)
{
result_width = max_width;
result_height = max_height;
}
else
{
if (result_width == -1)
{
result_height = Math.Min(max_height, result_height);
double ratio = (double)result_height / (double)max_height;
result_width = (int)Math.Floor(((double)max_width * ratio));
}
else
if (result_height == -1)
{
result_width = Math.Min(max_width, result_width);
double ratio = (double)result_width / (double)max_width;
result_height = (int)Math.Floor(((double)max_height * ratio));
}
}
// TODO: do this per requesting target device instead of using one global setting.
// Resize ?
if (result_width != bitmap_width || result_height != bitmap_height)
{
processed = true;
Bitmap resizedBitmap = Resize(bitmap, result_width, result_height);
bitmap.Dispose();
bitmap = resizedBitmap;
resizedBitmap = null;
}
// Check if the image must be converted to progressive jpeg(Not using this)
if (ImageCache.Instance.use_progressive_jpeg && (result_width * result_height) >= ImageCache.Instance.progressive_jpeg_size_threshold)
{
processed = true;
// Convert image to progressive jpeg
// FreeImage source code reveals that lower 7 bits of the FREE_IMAGE_SAVE_FLAGS enum are used for low-level quality control.
// FREE_IMAGE_SAVE_FLAGS quality = (FREE_IMAGE_SAVE_FLAGS)ImageCache.Instance.progressive_jpeg_quality;
//FREE_IMAGE_SAVE_FLAGS flags = FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_444 | FREE_IMAGE_SAVE_FLAGS.JPEG_PROGRESSIVE | quality;
//FIBITMAP dib = FreeImage.CreateFromBitmap(bitmap);
//bitmap.Dispose();
//bitmap = null;
//stream.Dispose();
stream = new MemoryStream();
bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
bitmap = null;
//FreeImage.SaveToStream(dib, stream, FREE_IMAGE_FORMAT.FIF_JPEG, flags);
//FreeImage.Unload(dib);
// dib.SetNull();
}
else
if (processed)
{
// image was rescaled, make new stream with rescaled bitmap
stream = GetBytesFromImage(bitmap);
// For now, images that were resized because they exceeded the maximum dimensions are not saved to the cache.
}
if (bitmap != null)
{
bitmap.Dispose();
bitmap = null;
}
// Always save thumbnails to the cache
if (thumbnail)
{
ImageCache.Instance.SaveToCache(filename, stream, true, false);
}
else
if (processed)
{
// Store rescaled and/or progressive jpegs in the cache for now.
string processed_filename = string.Format("{0}-p{1}-processed.jpg", id, page);
ImageCache.Instance.SaveToCache(processed_filename, stream, false, false);
}
stream.Seek(0, SeekOrigin.Begin);
return(response.FromStream(stream, MimeTypes.GetMimeType(".jpg")));
}
}
public static Response GetIcon(string key, IResponseFormatter response)
{
var image = ComicBook.PublisherIcons.GetImage(key);
if (image == null)
{
return response.AsRedirect("/original/Views/spacer.png");
}
return response.FromStream(GetBytesFromImage(image), MimeTypes.GetMimeType(".jpg"));
}
public static Response GetPageImage(Guid id, int page, int width, int height, IResponseFormatter response)
{
// Restrict access to the FreeImage library to one thread at a time.
lock(lockThis)
{
int max_width = 0;
int max_height = 0;
bool thumbnail = !(width == -1 && height == -1);
bool processed = false;
string filename = string.Format("{0}-p{1}-w{2}-h{3}.jpg", id, page, width, height);
if (thumbnail)
{
MemoryStream cachestream = ImageCache.Instance.LoadFromCache(filename, true);
// Cached thumbnails are assumed to be in the correct format and adhere to the size/format restrictions of the ipad.
if (cachestream != null)
return response.FromStream(cachestream, MimeTypes.GetMimeType(".jpg"));
}
else
{
// Check if a processed (rescaled and/or progressive) image is cached.
string processed_filename = string.Format("{0}-p{1}-processed.jpg", id, page);
MemoryStream cachestream = ImageCache.Instance.LoadFromCache(processed_filename, false);
if (cachestream != null)
return response.FromStream(cachestream, MimeTypes.GetMimeType(".jpg"));
}
MemoryStream stream = null;
// Check if original image is in the cache.
string org_filename = string.Format("{0}-p{1}.jpg", id, page);
stream = ImageCache.Instance.LoadFromCache(org_filename, false);
if (stream == null)
{
// Image is not in the cache, get it via ComicRack.
var bytes = GetPageImageBytes(id, page);
if (bytes == null)
{
return HttpStatusCode.NotFound;
}
stream = new MemoryStream(bytes);
// Always save the original page to the cache
ImageCache.Instance.SaveToCache(org_filename, stream, false);
}
stream.Seek(0, SeekOrigin.Begin);
#if USE_GDI
Bitmap bitmap = new Bitmap(stream, false);
int bitmap_width = (int)bitmap.Width;
int bitmap_height = (int)bitmap.Height;
#elif USE_DIB
FIBITMAP dib = FreeImage.LoadFromStream(stream);
if (dib == null)
{
Console.WriteLine("Loading bitmap failed. Aborting.");
// Check whether there was an error message.
return HttpStatusCode.InternalServerError;
}
int bitmap_width = (int)FreeImage.GetWidth(dib);
int bitmap_height = (int)FreeImage.GetHeight(dib);
#elif USE_FIB
FreeImageBitmap fib = FreeImageBitmap.FromStream(stream, false);
if (fib == null)
{
Console.WriteLine("Loading bitmap failed. Aborting.");
// Check whether there was an error message.
return HttpStatusCode.InternalServerError;
}
int bitmap_width = (int)fib.Width;
int bitmap_height = (int)fib.Height;
#endif
if (ImageCache.Instance.use_max_dimension)
{
int mw, mh;
if (bitmap_width >= bitmap_height)
{
mw = ImageCache.Instance.max_dimension_long;
mh = ImageCache.Instance.max_dimension_short;
}
else
{
mw = ImageCache.Instance.max_dimension_short;
mh = ImageCache.Instance.max_dimension_long;
}
if (bitmap_width > mw || bitmap_height > mh)
{
double scaleW = (double)mw / (double)bitmap_width;
double scaleH = (double)mh / (double)bitmap_height;
double scale = Math.Min(scaleW, scaleH);
max_width = (int)Math.Floor(scale * bitmap_width);
max_height = (int)Math.Floor(scale * bitmap_height);
}
else
{
max_width = bitmap_width;
max_height = bitmap_height;
}
}
else
// Check if the image dimensions exceeds the maximum image dimensions
if ((bitmap_width * bitmap_height) > ImageCache.Instance.maximum_imagesize)
{
max_width = (int)Math.Floor(Math.Sqrt((double)bitmap_width / (double)bitmap_height * (double)ImageCache.Instance.maximum_imagesize));
max_height = (int)Math.Floor((double)max_width * (double)bitmap_height / (double)bitmap_width);
}
else
{
max_width = bitmap_width;
max_height = bitmap_height;
}
// Calculate the dimensions of the returned image.
int result_width = width;
int result_height = height;
if (result_width == -1 && result_height == -1)
{
result_width = max_width;
result_height = max_height;
}
else
{
if (result_width == -1)
{
result_height = Math.Min(max_height, result_height);
double ratio = (double)result_height / (double)max_height;
result_width = (int)Math.Floor(((double)max_width * ratio));
}
else
if (result_height == -1)
{
result_width = Math.Min(max_width, result_width);
double ratio = (double)result_width / (double)max_width;
result_height = (int)Math.Floor(((double)max_height * ratio));
}
}
// TODO: do this per requesting target device instead of using one global setting.
// Resize ?
if (result_width != bitmap_width || result_height != bitmap_height)
{
processed = true;
#if USE_DIB || USE_FIB
//FREE_IMAGE_FILTER resizer = FREE_IMAGE_FILTER.FILTER_BICUBIC;
FREE_IMAGE_FILTER resizer = FREE_IMAGE_FILTER.FILTER_LANCZOS3;
#if USE_FIB
fib.Rescale(result_width, result_height, resizer);
#else
FIBITMAP newdib = FreeImage.Rescale(dib, result_width, result_height, resizer);
if (!newdib.IsNull)
{
FreeImage.Unload(dib);
dib.SetNull();
dib = newdib;
}
#endif
#elif USE_GDI
Bitmap resizedBitmap = Resize(bitmap, result_width, result_height);
bitmap.Dispose();
bitmap = resizedBitmap;
resizedBitmap = null;
#endif
}
// Check if the image must be converted to progressive jpeg
if (ImageCache.Instance.use_progressive_jpeg && (result_width * result_height) >= ImageCache.Instance.progressive_jpeg_size_threshold)
{
processed = true;
// Convert image to progressive jpeg
// FreeImage source code reveals that lower 7 bits of the FREE_IMAGE_SAVE_FLAGS enum are used for low-level quality control.
FREE_IMAGE_SAVE_FLAGS quality = (FREE_IMAGE_SAVE_FLAGS)ImageCache.Instance.progressive_jpeg_quality;
FREE_IMAGE_SAVE_FLAGS flags = FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_444 | FREE_IMAGE_SAVE_FLAGS.JPEG_PROGRESSIVE | quality;
#if USE_DIB || USE_FIB
stream.Dispose();
stream = new MemoryStream();
#if USE_FIB
fib.Save(stream, FREE_IMAGE_FORMAT.FIF_JPEG, flags);
fib.Dispose();
#else
FreeImage.SaveToStream(dib, stream, FREE_IMAGE_FORMAT.FIF_JPEG, flags);
FreeImage.Unload(dib);
dib.SetNull();
#endif
#else
FIBITMAP dib = FreeImage.CreateFromBitmap(bitmap);
bitmap.Dispose();
bitmap = null;
stream.Dispose();
stream = new MemoryStream();
FreeImage.SaveToStream(dib, stream, FREE_IMAGE_FORMAT.FIF_JPEG, flags);
FreeImage.Unload(dib);
dib.SetNull();
#endif
}
else
if (processed)
{
// image was rescaled, make new stream with rescaled bitmap
#if USE_DIB || USE_FIB
FREE_IMAGE_SAVE_FLAGS flags = FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_444 | FREE_IMAGE_SAVE_FLAGS.JPEG_OPTIMIZE | FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYNORMAL;
stream.Dispose();
stream = new MemoryStream();
#if USE_FIB
fib.Save(stream, FREE_IMAGE_FORMAT.FIF_JPEG, flags);
fib.Dispose();
#else
FreeImage.SaveToStream(dib, stream, FREE_IMAGE_FORMAT.FIF_JPEG, flags);
FreeImage.Unload(dib);
dib.SetNull();
#endif
#else
stream = GetBytesFromImage(bitmap);
#endif
// For now, images that were resized because they exceeded the maximum dimensions are not saved to the cache.
}
#if USE_DIB
FreeImage.Unload(dib);
dib.SetNull();
#elif USE_FIB
fib.Dispose();
#elif USE_GDI
if (bitmap != null)
{
bitmap.Dispose();
bitmap = null;
}
#endif
// Always save thumbnails to the cache
if (thumbnail)
{
ImageCache.Instance.SaveToCache(filename, stream, true);
}
else
if (processed)
{
// Store rescaled and/or progressive jpegs in the cache for now.
string processed_filename = string.Format("{0}-p{1}-processed.jpg", id, page);
ImageCache.Instance.SaveToCache(processed_filename, stream, false);
}
stream.Seek(0, SeekOrigin.Begin);
return response.FromStream(stream, MimeTypes.GetMimeType(".jpg"));
}
}
public static Response GetThumbnailImage(Guid id, int page, IResponseFormatter response)
{
var bitmap = Image.FromStream(new MemoryStream(GetPageImageBytes(id, page)), false, false);
double ratio = 200D / (double)bitmap.Height;
int width = (int)(bitmap.Width * ratio);
var callback = new Image.GetThumbnailImageAbort(() => true);
var thumbnail = bitmap.GetThumbnailImage(width, 200, callback, IntPtr.Zero);
MemoryStream stream = GetBytesFromImage(thumbnail);
return response.FromStream(stream, MimeTypes.GetMimeType(".jpg"));
}
public static Response GetPageImage(Guid id, int page, IResponseFormatter response)
{
var bytes = GetPageImageBytes(id, page);
if (bytes == null)
{
return response.AsRedirect("/Comics/Images/spacer.png");
}
return response.FromStream(new MemoryStream(bytes), MimeTypes.GetMimeType(".jpg"));
}
