public WicImageEncoder(FileFormat format, IStream stm) { encoder = ComHandle.Wrap(Wic.Factory.CreateEncoder(formatMap.GetValueOrDefault(format, Consts.GUID_ContainerFormatPng), null)); encoder.ComObject.Initialize(stm, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache); }
public WicImageEncoderFrame(PipelineContext ctx, WicImageEncoder encoder, PixelArea area = default) { var fmt = ctx.Settings.SaveFormat; var encArea = area.IsEmpty ? ctx.Source.Area : area; var colorMode = ctx.Settings.ColorProfileMode; var bag = default(IPropertyBag2); encoder.WicEncoder.CreateNewFrame(out var frame, ref bag); encoderFrame = ComHandle.Wrap(frame); using (var cbag = ComHandle.Wrap(bag)) { if (fmt == FileFormat.Jpeg) { bag.Write("ImageQuality", ctx.Settings.JpegQuality / 100f); } if (fmt == FileFormat.Jpeg && ctx.Settings.JpegSubsampleMode != ChromaSubsampleMode.Default) { bag.Write("JpegYCrCbSubsampling", (byte)ctx.Settings.JpegSubsampleMode); } if (fmt == FileFormat.Tiff) { bag.Write("TiffCompressionMethod", (byte)WICTiffCompressionOption.WICTiffCompressionNone); } if (fmt == FileFormat.Bmp && ctx.Source.Format.AlphaRepresentation != PixelAlphaRepresentation.None) { bag.Write("EnableV5Header32bppBGRA", true); } frame.Initialize(bag); } frame.SetSize((uint)encArea.Width, (uint)encArea.Height); frame.SetResolution(ctx.Settings.DpiX > 0d ? ctx.Settings.DpiX : ctx.ImageFrame.DpiX, ctx.Settings.DpiY > 0d ? ctx.Settings.DpiY : ctx.ImageFrame.DpiY); bool copySourceMetadata = ctx.ImageFrame is WicImageFrame srcFrame && srcFrame.WicMetadataReader is not null && ctx.Settings.MetadataNames != Enumerable.Empty <string>(); bool writeOrientation = ctx.Settings.OrientationMode == OrientationMode.Preserve && ctx.ImageFrame.ExifOrientation != Orientation.Normal; bool writeColorContext = colorMode == ColorProfileMode.NormalizeAndEmbed || colorMode == ColorProfileMode.Preserve || (colorMode == ColorProfileMode.Normalize && ctx.DestColorProfile != ColorProfile.sRGB && ctx.DestColorProfile != ColorProfile.sGrey); if ((copySourceMetadata || writeOrientation) && frame.TryGetMetadataQueryWriter(out var metawriter)) { using var cmeta = ComHandle.Wrap(metawriter); if (copySourceMetadata) { var wicFrame = (WicImageFrame)ctx.ImageFrame; foreach (string prop in ctx.Settings.MetadataNames) { if (wicFrame.WicMetadataReader !.TryGetMetadataByName(prop, out var pvar) && pvar.Value is not null) { metawriter.TrySetMetadataByName(prop, pvar); } } } if (writeOrientation) { string orientationPath = ctx.Settings.SaveFormat == FileFormat.Jpeg ? Wic.Metadata.OrientationJpeg : Wic.Metadata.OrientationExif; metawriter.TrySetMetadataByName(orientationPath, new PropVariant((ushort)ctx.ImageFrame.ExifOrientation)); } } if (writeColorContext) { Debug.Assert(ctx.WicContext.DestColorContext is not null || ctx.DestColorProfile is not null); var cc = ctx.WicContext.DestColorContext; if (ctx.DestColorProfile == ColorProfile.sRGB) { cc = WicColorProfile.SrgbCompact.Value.WicColorContext; } else if (ctx.DestColorProfile == ColorProfile.sGrey) { cc = WicColorProfile.GreyCompact.Value.WicColorContext; } else if (ctx.DestColorProfile == ColorProfile.AdobeRgb) { cc = WicColorProfile.AdobeRgb.Value.WicColorContext; } else if (ctx.DestColorProfile == ColorProfile.DisplayP3) { cc = WicColorProfile.DisplayP3Compact.Value.WicColorContext; } frame.TrySetColorContexts(cc ?? ctx.WicContext.AddRef(WicColorProfile.CreateContextFromProfile(ctx.DestColorProfile !.ProfileBytes))); } }