public WicImageContainer(IWICBitmapDecoder dec, WicPipelineContext ctx, FileFormat fmt)
{
WicDecoder = ctx.AddRef(dec);
ContainerFormat = fmt;
FrameCount = (int)dec.GetFrameCount();
}
private WicImageContainer(IWICBitmapDecoder dec, WicPipelineContext ctx)
{
wicContext = ctx;
WicDecoder = ctx.AddRef(dec);
WicContainerFormat = dec.GetContainerFormat();
ContainerFormat = formatMap.GetValueOrDefault(WicContainerFormat, FileFormat.Unknown);
FrameCount = (int)dec.GetFrameCount();
}
unsafe public static WicImageContainer Create(ReadOnlySpan <byte> inBuffer, WicPipelineContext ctx)
{
fixed(byte *pbBuffer = inBuffer)
{
var istm = ctx.AddRef(Wic.Factory.CreateStream());
istm.InitializeFromMemory((IntPtr)pbBuffer, (uint)inBuffer.Length);
var dec = createDecoder(stm => Wic.Factory.CreateDecoderFromStream(stm, null, WICDecodeOptions.WICDecodeMetadataCacheOnDemand), istm);
return(new WicImageContainer(dec, ctx));
}
}
