void ExtractImage(ArcFile arc, Entry entry, ImageFormat targetFormat)
{
using (var decoder = arc.OpenImage(entry)) {
var src_format = decoder.SourceFormat; // could be null
if (autoImageFormat && src_format != null)
{
targetFormat = CommonImageFormats.Contains(src_format.Tag.ToLower())? src_format: ImageFormat.Png;
}
var target_ext = targetFormat.Extensions.FirstOrDefault() ?? "";
var outputName = Path.ChangeExtension(entry.Name, target_ext);
if (src_format == targetFormat)
{
// source format is the same as a target, copy file as is
using (var output = CreateNewFile(outputName)) decoder.Source.CopyTo(output);
return;
}
var image = decoder.Image;
if (adjustImageOffset)
{
image = AdjustImageOffset(image);
}
using (var outfile = CreateNewFile(outputName)) {
targetFormat.Write(outfile, image);
}
}
}
void ExtractImage(ArcFile arc, Entry entry, ImageFormat target_format)
{
using (var decoder = arc.OpenImage(entry))
{
var src_format = decoder.SourceFormat; // could be null
string target_ext = target_format.Extensions.FirstOrDefault() ?? "";
string outname = Path.ChangeExtension(entry.Name, target_ext);
if (src_format == target_format)
{
// source format is the same as a target, copy file as is
using (var output = CreateNewFile(outname, true))
decoder.Source.CopyTo(output);
return;
}
ImageData image = decoder.Image;
if (m_adjust_image_offset)
{
image = AdjustImageOffset(image);
}
using (var outfile = CreateNewFile(outname, true))
{
target_format.Write(outfile, image);
}
}
}
public override ImageData Read(IBinaryStream file, ImageMetaData info)
{
var meta = (DrefMetaData)info;
ArcFile dpak = null;
try
{
int layers_count = meta.Layers.Count();
WriteableBitmap canvas = null;
foreach (var path in meta.Layers)
{
if (null == dpak || dpak.File.Name != path.Item1)
{
if (dpak != null)
{
dpak.Dispose();
dpak = null;
}
var view = VFS.OpenView(path.Item1);
try
{
dpak = Psb.Value.TryOpen(view);
if (null == dpak)
{
throw new InvalidFormatException();
}
}
catch
{
view.Dispose();
throw;
}
}
var entry = dpak.Dir.FirstOrDefault(e => e.Name == path.Item2);
if (null == entry)
{
throw new InvalidFormatException();
}
using (var decoder = dpak.OpenImage(entry))
{
if (1 == layers_count)
{
return(decoder.Image);
}
if (null == canvas)
{
canvas = new WriteableBitmap(decoder.Image.Bitmap);
meta.Width = decoder.Info.Width;
meta.Height = decoder.Info.Height;
meta.OffsetX = decoder.Info.OffsetX;
meta.OffsetY = decoder.Info.OffsetY;
}
else
{
BlendLayer(canvas, decoder.Image);
}
}
}
if (null == canvas)
{
throw new InvalidFormatException();
}
canvas.Freeze();
return(new ImageData(canvas, meta));
}
finally
{
if (dpak != null)
{
dpak.Dispose();
}
}
}