对于Windows XP SP3上的GIF图像，元数据为空（在Windows 7上可以正常使用）
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我有以下代码，这些代码使用WPF图像处理API打印图像的元数据：
void Main()
{
Uri imageUri = new Uri(@\"E:\\tmp\\bomb.gif\");
var decoder = BitmapDecoder.Create(imageUri, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
var f = decoder.Frames[0];
var m = f.Metadata as BitmapMetadata;
DumpMetadata(m);
}
void DumpMetadata(BitmapMetadata metadata)
{
DumpMetadata(metadata, 0);
}
void DumpMetadata(BitmapMetadata metadata, int indentLevel)
{
if (metadata == null)
{
Console.WriteLine (\"(No metadata)\");
return;
}
string indent = new string(\'\\t\', indentLevel);
foreach (var propertyName in metadata)
{
object value = metadata.GetQuery(propertyName);
BitmapMetadata complexProperty = value as BitmapMetadata;
if (complexProperty != null)
{
Console.WriteLine(\"{0}{1} =\", indent, propertyName);
DumpMetadata(complexProperty, indentLevel + 1);
}
else
{
Type type = null;
if (value != null)
type = value.GetType();
Console.WriteLine(\"{0}{1} = {2} ({3})\", indent, propertyName, value, type);
}
}
}
/imgdesc =
/Left = 0 (System.UInt16)
/Top = 0 (System.UInt16)
/Width = 78 (System.UInt16)
/Height = 121 (System.UInt16)
/LocalColorTableFlag = False (System.Boolean)
/InterlaceFlag = False (System.Boolean)
/SortFlag = False (System.Boolean)
/LocalColorTableSize = 7 (System.Byte)
/grctlext =
/Disposal = 2 (System.Byte)
/UserInputFlag = False (System.Boolean)
/TransparencyFlag = True (System.Boolean)
/Delay = 10 (System.UInt16)
/TransparentColorIndex = 0 (System.Byte)
Metadata
BitmapMetadata
没有找到相关结果
已邀请:
2 个回复
死簇
，您可以执行以下操作：private static int ReadGifDelayInMiliseconds(string gifFile, int frameIndex = 0) { System.Drawing.Image img = System.Drawing.Image.FromFile(gifFile); int numFrames = img.GetFrameCount(FrameDimension.Time); byte[] bytes = img.GetPropertyItem(0x5100).Value; if (frameIndex < numFrames) { var raw = BitConverter.ToInt32(bytes, frameIndex * 4); return raw * 10; } else { return -1; } }摊揉售