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migration to IBinaryStream interface.

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This commit is contained in:
morkt
2016-10-15 09:34:46 +04:00
parent 0b96ef8f77
commit 503b734645
16 changed files with 264 additions and 332 deletions
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57
GameRes/Image.cs
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@@ -115,49 +115,32 @@ namespace GameRes
{
public override string Type { get { return "image"; } }
public abstract ImageMetaData ReadMetaData (Stream file);
public abstract ImageMetaData ReadMetaData (IBinaryStream file);
public abstract ImageData Read (Stream file, ImageMetaData info);
public abstract ImageData Read (IBinaryStream file, ImageMetaData info);
public abstract void Write (Stream file, ImageData bitmap);
public static ImageData Read (Stream file)
{
return Read (null, file);
}
// public static ImageData Read (Stream file)
// {
// using (var bin = new BinaryStream (file, true))
// return Read (null, bin);
// }
public static ImageData Read (string filename, Stream file)
public static ImageData Read (IBinaryStream file)
{
bool need_dispose = false;
try
{
if (!file.CanSeek)
{
var stream = new MemoryStream();
file.CopyTo (stream);
file = stream;
need_dispose = true;
}
var format = FindFormat (file, filename);
if (null == format)
return null;
file.Position = 0;
return format.Item1.Read (file, format.Item2);
}
finally
{
if (need_dispose)
file.Dispose();
}
}
public static System.Tuple<ImageFormat, ImageMetaData> FindFormat (Stream file, string filename = null)
{
if (file.Length < 4)
var format = FindFormat (file);
if (null == format)
return null;
uint signature = FormatCatalog.ReadSignature (file);
file.Position = 0;
return format.Item1.Read (file, format.Item2);
}
public static System.Tuple<ImageFormat, ImageMetaData> FindFormat (IBinaryStream file)
{
uint signature = file.Signature;
Lazy<string> ext = null;
if (!string.IsNullOrEmpty (filename))
ext = new Lazy<string> (() => Path.GetExtension (filename).TrimStart ('.').ToLowerInvariant(), false);
if (!string.IsNullOrEmpty (file.Name))
ext = new Lazy<string> (() => Path.GetExtension (file.Name).TrimStart ('.').ToLowerInvariant(), false);
for (;;)
{
var range = FormatCatalog.Instance.LookupSignature<ImageFormat> (signature);
@@ -172,7 +155,7 @@ namespace GameRes
ImageMetaData metadata = impl.ReadMetaData (file);
if (null != metadata)
{
metadata.FileName = filename;
metadata.FileName = file.Name;
return Tuple.Create (impl, metadata);
}
}