public void LoadGifPicture(Image img, GifQuality quality)
{
List <byte> dataList;
using (MemoryStream ms = new MemoryStream()) {
img.SaveGif(ms, quality);
dataList = new List <byte>(ms.ToArray());
}
if (!AnalyzeGifSignature(dataList))
{
throw new Exception("File is not a gif!");
}
AnalyzeScreenDescriptor(dataList);
GifBlockType blockType = GetTypeOfNextBlock(dataList);
while (blockType != GifBlockType.Trailer)
{
switch (blockType)
{
case GifBlockType.ImageDescriptor:
AnalyzeImageDescriptor(dataList);
break;
case GifBlockType.Extension:
ThrowAwayExtensionBlock(dataList);
break;
}
blockType = GetTypeOfNextBlock(dataList);
}
}
internal GifApplicationExtensionBlock(GifBlockType gifBlockType)
: base(gifBlockType)
{
}
internal GifBlock(GifBlockType gifBlockType)//, String gifBlockName)
{
this.gifBlockType = gifBlockType;
//this.gifBlockName = gifBlockName;
}
internal GifApplicationExtensionBlock(GifBlockType gifBlockType)
: base(gifBlockType)
{
}
//, String gifBlockName)
internal GifBlock(GifBlockType gifBlockType)
{
this.gifBlockType = gifBlockType;
//this.gifBlockName = gifBlockName;
}
private GifBlockType GetTypeOfNextBlock(List <byte> gifData)
{
GifBlockType blockType = (GifBlockType)gifData[0];
return(blockType);
}
