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introduced extensions infrastructure.

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This commit is contained in:
morkt 2016-08-02 16:38:42 +04:00
parent df901a3670
commit 0732a9cf45
2 changed files with 106 additions and 59 deletions
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25
GameRes/FormatCatalog.cs
View File

@ -85,20 +85,31 @@ namespace GameRes
catalog.Catalogs.Add (new DirectoryCatalog (Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly().Location), "Arc*.dll"));
//Create the CompositionContainer with the parts in the catalog
var container = new CompositionContainer (catalog);
using (var container = new CompositionContainer (catalog))
{
//Fill the imports of this object
container.ComposeParts (this);
AddResourceImpl (m_image_formats);
AddResourceImpl (m_arc_formats);
AddResourceImpl (m_audio_formats);
AddResourceImpl (m_script_formats);
AddResourceImpl (m_image_formats, container);
AddResourceImpl (m_arc_formats, container);
AddResourceImpl (m_audio_formats, container);
AddResourceImpl (m_script_formats, container);
}
}
private void AddResourceImpl (IEnumerable<IResource> formats)
private void AddResourceImpl (IEnumerable<IResource> formats, CompositionContainer container)
{
foreach (var impl in formats)
{
try
{
var part = AttributedModelServices.CreatePart (impl);
if (part.ImportDefinitions.Any())
container.SatisfyImportsOnce (part);
}
catch (Exception X)
{
System.Diagnostics.Trace.WriteLine (X.Message, impl.Tag);
}
foreach (var ext in impl.Extensions)
{
m_extension_map.Add (ext.ToUpperInvariant(), impl);

132
GameRes/ImageBMP.cs
View File

@ -30,6 +30,7 @@ using System.ComponentModel.Composition;
using System.Windows.Media.Imaging;
using GameRes.Utility;
using System.Windows.Media;
using System.Collections.Generic;
namespace GameRes
{
@ -39,6 +40,11 @@ namespace GameRes
public uint HeaderLength;
}
public interface IBmpExtension
{
ImageData Read (Stream file, BmpMetaData info);
}
[Export(typeof(ImageFormat))]
public class BmpFormat : ImageFormat
{
@ -46,22 +52,27 @@ namespace GameRes
public override string Description { get { return "Windows device independent bitmap"; } }
public override uint Signature { get { return 0; } }
#pragma warning disable 649
[ImportMany(typeof(IBmpExtension))]
private IEnumerable<IBmpExtension> m_extensions;
#pragma warning restore 649
public override ImageData Read (Stream file, ImageMetaData info)
{
var bmp_info = info as BmpMetaData;
if (bmp_info != null && file.CanSeek)
if (bmp_info != null)
{
uint bmp_length = info.Width * info.Height * (uint)info.BPP/8 + bmp_info.HeaderLength;
if (bmp_length == bmp_info.ImageLength || bmp_length+2 == bmp_info.ImageLength)
foreach (var ext in m_extensions)
{
if (0x20 == info.BPP)
try
{
return ReadBitmapBGRA (file, bmp_info);
var image = ext.Read (file, bmp_info);
if (null != image)
return image;
}
else if (0x18 == info.BPP
&& (bmp_info.ImageLength + info.Width * info.Height) == file.Length)
catch (System.Exception X)
{
return ReadBitmapWithAlpha (file, bmp_info);
System.Diagnostics.Trace.WriteLine (X.Message, ext.ToString());
}
}
}
@ -79,46 +90,6 @@ namespace GameRes
encoder.Save (file);
}
private ImageData ReadBitmapWithAlpha (Stream file, BmpMetaData info)
{
file.Position = info.ImageLength;
var alpha = new byte[info.Width*info.Height];
if (alpha.Length != file.Read (alpha, 0, alpha.Length))
throw new EndOfStreamException();
file.Position = info.HeaderLength;
int dst_stride = (int)info.Width * 4;
var pixels = new byte[(int)info.Height * dst_stride];
int a_src = 0;
for (int y = (int)info.Height-1; y >= 0; --y)
{
int dst = dst_stride * y;
for (int x = 0; x < dst_stride; x += 4)
{
file.Read (pixels, dst+x, 3);
pixels[dst+x+3] = alpha[a_src++];
}
}
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels, dst_stride);
}
private ImageData ReadBitmapBGRA (Stream file, BmpMetaData info)
{
file.Position = info.HeaderLength;
int stride = (int)info.Width * 4;
var pixels = new byte[(int)info.Height * stride];
bool has_alpha = false;
for (int y = (int)info.Height-1; y >= 0; --y)
{
int dst = stride * y;
file.Read (pixels, dst, stride);
for (int x = 3; !has_alpha && x < stride; x += 4)
has_alpha = pixels[dst+x] != 0;
}
PixelFormat format = has_alpha ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
return ImageData.Create (info, format, null, pixels, stride);
}
void SkipBytes (BinaryReader file, uint num)
{
if (file.BaseStream.CanSeek)
@ -163,4 +134,69 @@ namespace GameRes
}
}
}
[Export(typeof(IBmpExtension))]
public class BitmapWithAlpha : IBmpExtension
{
public ImageData Read (Stream file, BmpMetaData info)
{
if (file.CanSeek)
{
var width_x_height = info.Width * info.Height;
uint bmp_length = width_x_height * (uint)info.BPP/8 + info.HeaderLength;
if (bmp_length == info.ImageLength || bmp_length+2 == info.ImageLength)
{
if (0x20 == info.BPP)
{
return ReadBitmapBGRA (file, info);
}
else if (0x18 == info.BPP && (info.ImageLength + width_x_height) == file.Length)
{
return ReadBitmapWithAlpha (file, info);
}
}
}
return null;
}
private ImageData ReadBitmapWithAlpha (Stream file, BmpMetaData info)
{
file.Position = info.ImageLength;
var alpha = new byte[info.Width*info.Height];
if (alpha.Length != file.Read (alpha, 0, alpha.Length))
throw new EndOfStreamException();
file.Position = info.HeaderLength;
int dst_stride = (int)info.Width * 4;
var pixels = new byte[(int)info.Height * dst_stride];
int a_src = 0;
for (int y = (int)info.Height-1; y >= 0; --y)
{
int dst = dst_stride * y;
for (int x = 0; x < dst_stride; x += 4)
{
file.Read (pixels, dst+x, 3);
pixels[dst+x+3] = alpha[a_src++];
}
}
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels, dst_stride);
}
private ImageData ReadBitmapBGRA (Stream file, BmpMetaData info)
{
file.Position = info.HeaderLength;
int stride = (int)info.Width * 4;
var pixels = new byte[(int)info.Height * stride];
bool has_alpha = false;
for (int y = (int)info.Height-1; y >= 0; --y)
{
int dst = stride * y;
file.Read (pixels, dst, stride);
for (int x = 3; !has_alpha && x < stride; x += 4)
has_alpha = pixels[dst+x] != 0;
}
PixelFormat format = has_alpha ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
return ImageData.Create (info, format, null, pixels, stride);
}
}
}