public static void AddPlanarCache(WicProcessingContext ctx)
{
if (!(ctx.Source.WicSource is IWICPlanarBitmapSourceTransform trans))
{
throw new NotSupportedException("Transform chain doesn't support planar mode. Only JPEG Decoder, Rotator, Scaler, and PixelFormatConverter are allowed");
}
double rat = ctx.Settings.HybridScaleRatio.Clamp(1d, 8d);
uint width = (uint)Math.Ceiling(ctx.Source.Width / rat);
uint height = (uint)Math.Ceiling(ctx.Source.Height / rat);
var opt = ctx.DecoderFrame.ExifOrientation.ToWicTransformOptions();
var desc = new WICBitmapPlaneDescription[2];
if (!trans.DoesSupportTransform(ref width, ref height, opt, WICPlanarOptions.WICPlanarOptionsDefault, planarPixelFormats, desc, 2))
{
throw new NotSupportedException("Requested planar transform not supported");
}
var cacheSource = ctx.AddDispose(new WicPlanarCache(trans, desc[0], desc[1], ctx.Settings.Crop, opt, width, height, rat));
ctx.PlanarChromaSource = cacheSource.GetPlane(WicPlane.Chroma);
ctx.PlanarLumaSource = cacheSource.GetPlane(WicPlane.Luma);
ctx.Source = ctx.PlanarChromaSource;
ctx.Source = ctx.PlanarLumaSource;
}
public WicFrameReader(WicDecoder dec, WicProcessingContext ctx)
{
Frame = AddRef(dec.Decoder.GetFrame((uint)ctx.Settings.FrameIndex));
Source = Frame;
Context = ctx;
if (ctx.ContainerFormat == Consts.GUID_ContainerFormatRaw && ctx.Settings.FrameIndex == 0)
{
try { Source = AddRef(dec.Decoder.GetPreview()); } catch { }
}
ctx.PixelFormat = Source.GetPixelFormat();
Source.GetSize(out ctx.Width, out ctx.Height);
var ptrans = Source as IWICPlanarBitmapSourceTransform;
if (ptrans != null)
{
uint pw = ctx.Width, ph = ctx.Height;
var pdesc = new WICBitmapPlaneDescription[2];
var pfmts = new Guid[] { Consts.GUID_WICPixelFormat8bppY, Consts.GUID_WICPixelFormat16bppCbCr };
ctx.SupportsPlanar = ptrans.DoesSupportTransform(ref pw, ref ph, WICBitmapTransformOptions.WICBitmapTransformRotate0, WICPlanarOptions.WICPlanarOptionsPreserveSubsampling, pfmts, pdesc, 2);
ctx.IsSubsampled = pdesc[0].Width != pdesc[1].Width || pdesc[0].Height != pdesc[1].Height;
}
}
public WicPlanarCacheSource(IWICPlanarBitmapSourceTransform source, WICBitmapPlaneDescription descY, WICBitmapPlaneDescription descC, WICRect crop, WICBitmapTransformOptions transformOptions, uint width, uint height, double ratio)
{
// TODO fractional ratio support?
subsampleRatioX = Math.Ceiling((double)descY.Width / descC.Width);
subsampleRatioY = Math.Ceiling((double)descY.Height / descC.Height);
var scrop = new WICRect();
scrop.X = (int)Math.Floor(crop.X / ratio);
scrop.Y = (int)Math.Floor(crop.Y / ratio);
scrop.Width = Math.Min((int)Math.Ceiling(crop.Width / ratio), (int)descY.Width);
scrop.Height = Math.Min((int)Math.Ceiling(crop.Height / ratio), (int)descY.Height);
if (subsampleRatioX > 1d)
{
descC.Width = Math.Min((uint)Math.Ceiling(scrop.Width / subsampleRatioX), descC.Width);
descY.Width = (uint)Math.Min(descC.Width * subsampleRatioX, scrop.Width);
if (scrop.X % subsampleRatioX > 0)
{
scrop.X = (int)(scrop.X / subsampleRatioX) * (int)subsampleRatioX;
}
}
else
{
descC.Width = descY.Width = (uint)scrop.Width;
}
if (subsampleRatioY > 1d)
{
descC.Height = Math.Min((uint)Math.Ceiling(scrop.Height / subsampleRatioY), descC.Height);
descY.Height = (uint)Math.Min(descC.Height * subsampleRatioY, scrop.Height);
if (scrop.Y % subsampleRatioY > 0)
{
scrop.Y = (int)(scrop.Y / subsampleRatioY) * (int)subsampleRatioY;
}
}
else
{
descC.Height = descY.Height = (uint)scrop.Height;
}
sourceTransform = source;
sourceTransformOptions = transformOptions;
planeDescriptionY = descY;
planeDescriptionC = descC;
scaledCrop = scrop;
scaledWidth = width;
scaledHeight = height;
strideY = (uint)scrop.Width + 3u & ~3u;
buffHeightY = 16u;
strideC = (uint)(Math.Ceiling(scrop.Width / subsampleRatioX)) * 2u + 3u & ~3u;
buffHeightC = (uint)(buffHeightY / subsampleRatioY);
sourceY = new WicPlanarSource(this, WicPlane.Luma, descY);
sourceC = new WicPlanarSource(this, WicPlane.Chroma, descC);
}
public PlanarPixelSource(WicPlanarCache cache, WicPlane plane, WICBitmapPlaneDescription planeDesc)
{
Width = planeDesc.Width;
Height = planeDesc.Height;
Format = PixelFormat.Cache[planeDesc.Format];
cacheSource = cache;
cachePlane = plane;
}
public WicPlanarSource(WicPlanarCacheSource cache, WicPlane plane, WICBitmapPlaneDescription planeDesc)
{
Width = planeDesc.Width;
Height = planeDesc.Height;
Format = planeDesc.Format;
cacheSource = cache;
cachePlane = plane;
}
public WicFrameReader(WicDecoder dec, WicProcessingContext ctx) : base(ctx)
{
Frame = AddRef(dec.Decoder.GetFrame((uint)ctx.Settings.FrameIndex));
Source = Frame;
if (ctx.ContainerFormat == Consts.GUID_ContainerFormatRaw && ctx.Settings.FrameIndex == 0 && dec.Decoder.TryGetPreview(out var preview))
{
Source = AddRef(preview);
}
ctx.PixelFormat = PixelFormat.Cache[Source.GetPixelFormat()];
Source.GetSize(out ctx.Width, out ctx.Height);
Source.GetResolution(out ctx.DpiX, out ctx.DpiY);
if (Source is IWICPlanarBitmapSourceTransform ptrans)
{
uint pw = ctx.Width, ph = ctx.Height;
var pdesc = new WICBitmapPlaneDescription[2];
var pfmts = new Guid[] { Consts.GUID_WICPixelFormat8bppY, Consts.GUID_WICPixelFormat16bppCbCr };
ctx.SupportsPlanar = ptrans.DoesSupportTransform(ref pw, ref ph, WICBitmapTransformOptions.WICBitmapTransformRotate0, WICPlanarOptions.WICPlanarOptionsDefault, pfmts, pdesc, 2);
}
}
public WicPlanarCache(WicTransform prev) : base(prev)
{
if (!(prev.Source is IWICPlanarBitmapSourceTransform))
{
throw new NotSupportedException("Transform chain doesn't support planar mode. Only JPEG Decoder, Rotator, Scaler, and ColorSpaceConverter are allowed");
}
var trans = (IWICPlanarBitmapSourceTransform)prev.Source;
double rat = Context.Settings.HybridScaleRatio.Clamp(1d, 8d);
Context.Width = (uint)Math.Ceiling(Context.Width / rat);
Context.Height = (uint)Math.Ceiling(Context.Height / rat);
// Although generally the last scan has the least significant bit(s) of the luma plane and skipping it could be very beneficial performance-wise, there is no guarantee of scan order. Might be able to do something with more decoder support.
//var prog = Frame as IWICProgressiveLevelControl;
//if (prog != null)
//{
// uint levels = prog.GetLevelCount();
// uint level = (uint)Math.Ceiling(levels / rat) + (Context.Settings.HybridMode == HybridScaleMode.FavorQuality || Context.Settings.HybridMode == HybridScaleMode.Off ? (uint)Math.Ceiling(levels / 8d) : 0u);
// prog.SetCurrentLevel(Math.Min(level, levels - (Context.Settings.ScaleRatio >= 2d && levels > 7u ? 2u : 1u)));
//}
var fmts = new Guid[] { Consts.GUID_WICPixelFormat8bppY, Consts.GUID_WICPixelFormat16bppCbCr };
var desc = new WICBitmapPlaneDescription[2];
if (!trans.DoesSupportTransform(ref Context.Width, ref Context.Height, Context.TransformOptions, WICPlanarOptions.WICPlanarOptionsDefault, fmts, desc, 2))
{
throw new NotSupportedException("Requested planar transform not supported");
}
var crop = new WICRect {
X = Context.Settings.Crop.X, Y = Context.Settings.Crop.Y, Width = Context.Settings.Crop.Width, Height = Context.Settings.Crop.Height
};
cacheSource = new WicPlanarCacheSource(trans, desc[0], desc[1], crop, Context.TransformOptions, Context.Width, Context.Height, rat, Context.NeedsCache);
SourceY = cacheSource.GetPlane(WicPlane.Luma);
SourceCbCr = cacheSource.GetPlane(WicPlane.Chroma);
}
public WicPlanarCache(WicTransform prev) : base(prev)
{
Contract.Requires <NotSupportedException>(prev.Source is IWICPlanarBitmapSourceTransform, "Transform chain doesn't support planar mode. Only JPEG Decoder, Rotator, Scaler, and ColorSpaceConverter are allowed");
var trans = (IWICPlanarBitmapSourceTransform)prev.Source;
double rat = Context.Settings.HybridScaleRatio.Clamp(1d, 8d);
Context.Width = (uint)Math.Ceiling(Context.Width / rat);
Context.Height = (uint)Math.Ceiling(Context.Height / rat);
var prog = Frame as IWICProgressiveLevelControl;
if (prog != null) // TODO needs work
{
uint levels = prog.GetLevelCount();
uint level = (uint)Math.Ceiling(levels / rat) + (Context.Settings.HybridMode == HybridScaleMode.FavorQuality || Context.Settings.HybridMode == HybridScaleMode.Off ? (uint)Math.Ceiling(levels / 8d) : 0u);
prog.SetCurrentLevel(Math.Min(level, levels - (Context.Settings.ScaleRatio >= 2d && levels > 7u ? 2u : 1u)));
}
var fmts = new Guid[] { Consts.GUID_WICPixelFormat8bppY, Consts.GUID_WICPixelFormat16bppCbCr };
var desc = new WICBitmapPlaneDescription[2];
if (!trans.DoesSupportTransform(ref Context.Width, ref Context.Height, Context.TransformOptions, WICPlanarOptions.WICPlanarOptionsPreserveSubsampling, fmts, desc, 2))
{
throw new NotSupportedException("Planar Transform not supported");
}
var crop = new WICRect()
{
X = Context.Settings.Crop.X, Y = Context.Settings.Crop.Y, Width = Context.Settings.Crop.Width, Height = Context.Settings.Crop.Height
};
var source = new WicPlanarCacheSource(trans, desc[0], desc[1], crop, Context.TransformOptions, Context.Width, Context.Height, rat);
SourceY = source.GetPlane(WicPlane.Luma);
SourceCbCr = source.GetPlane(WicPlane.Chroma);
}
public WicFrameReader(WicProcessingContext ctx, bool planar = false)
{
ctx.DecoderFrame = this;
if (ctx.Decoder.Decoder is null)
{
DpiX = DpiY = 96d;
return;
}
var source = default(IWICBitmapSource);
source = Frame = ctx.AddRef(ctx.Decoder.Decoder.GetFrame((uint)ctx.Settings.FrameIndex));
if (ctx.Decoder.WicContainerFormat == Consts.GUID_ContainerFormatRaw && ctx.Settings.FrameIndex == 0 && ctx.Decoder.Decoder.TryGetPreview(out var preview))
{
source = ctx.AddRef(preview);
}
source.GetResolution(out double dpix, out double dpiy);
DpiX = dpix;
DpiY = dpiy;
if (PixelFormat.Cache[source.GetPixelFormat()].NumericRepresentation == PixelNumericRepresentation.Indexed)
{
var pal = ctx.AddRef(Wic.Factory.CreatePalette());
source.CopyPalette(pal);
var newFormat = Consts.GUID_WICPixelFormat24bppBGR;
if (pal.HasAlpha())
{
newFormat = Consts.GUID_WICPixelFormat32bppBGRA;
}
else if (pal.IsGrayscale() || pal.IsBlackWhite())
{
newFormat = Consts.GUID_WICPixelFormat8bppGray;
}
var conv = ctx.AddRef(Wic.Factory.CreateFormatConverter());
conv.Initialize(source, newFormat, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.0, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
source = conv;
}
if (source is IWICBitmapSourceTransform trans)
{
uint pw = 1, ph = 1;
source.GetSize(out uint ow, out uint oh);
trans.GetClosestSize(ref pw, ref ph);
SupportsNativeScale = pw < ow || ph < oh;
SupportsNativeTransform = trans.DoesSupportTransform(WICBitmapTransformOptions.WICBitmapTransformRotate270);
}
if (planar && source is IWICPlanarBitmapSourceTransform ptrans)
{
uint pw = 1, ph = 1;
var pdesc = new WICBitmapPlaneDescription[2];
var pfmts = new[] { Consts.GUID_WICPixelFormat8bppY, Consts.GUID_WICPixelFormat16bppCbCr };
SupportsPlanarPipeline = ptrans.DoesSupportTransform(ref pw, ref ph, WICBitmapTransformOptions.WICBitmapTransformRotate0, WICPlanarOptions.WICPlanarOptionsDefault, pfmts, pdesc, 2);
}
bool preserveNative = SupportsPlanarPipeline || SupportsNativeTransform || (SupportsNativeScale && ctx.Settings.HybridScaleRatio > 1d);
ctx.Source = source.AsPixelSource(nameof(IWICBitmapFrameDecode), !preserveNative);
}
public static void AddMetadataReader(WicProcessingContext ctx, bool basicOnly = false)
{
if (ctx.DecoderFrame.Frame is null)
{
return;
}
if (ctx.DecoderFrame.Frame.TryGetMetadataQueryReader(out var metareader))
{
ctx.AddRef(metareader);
// Exif orientation
var pvorient = default(PropVariant);
if (ctx.Settings.OrientationMode != OrientationMode.Ignore && metareader.TryGetMetadataByName("System.Photo.Orientation", out pvorient))
{
#pragma warning disable 0618 // VarEnum is obsolete
if (ctx.Settings.OrientationMode == OrientationMode.Normalize && pvorient.UnmanagedType == VarEnum.VT_UI2)
{
ctx.DecoderFrame.ExifOrientation = (Orientation)Math.Min(Math.Max((ushort)Orientation.Normal, (ushort)pvorient.Value), (ushort)Orientation.Rotate270);
}
#pragma warning restore 0618
var opt = ctx.DecoderFrame.ExifOrientation.ToWicTransformOptions();
if (ctx.DecoderFrame.SupportsPlanarPipeline && opt != WICBitmapTransformOptions.WICBitmapTransformRotate0 && ctx.DecoderFrame.Frame is IWICPlanarBitmapSourceTransform ptrans)
{
uint pw = 1, ph = 1;
var desc = new WICBitmapPlaneDescription[2];
ctx.DecoderFrame.SupportsPlanarPipeline = ptrans.DoesSupportTransform(ref pw, ref ph, opt, WICPlanarOptions.WICPlanarOptionsDefault, planarPixelFormats, desc, 2);
}
}
if (basicOnly)
{
return;
}
// other requested properties
var propdic = new Dictionary <string, PropVariant>();
foreach (string prop in ctx.Settings.MetadataNames ?? Enumerable.Empty <string>())
{
if (metareader.TryGetMetadataByName(prop, out var pvar) && pvar.Value != null)
{
propdic[prop] = pvar;
}
}
if (ctx.Settings.OrientationMode == OrientationMode.Preserve && pvorient != null)
{
propdic["System.Photo.Orientation"] = pvorient;
}
ctx.DecoderFrame.Metadata = propdic;
}
if (basicOnly)
{
return;
}
// ICC profiles
//http://ninedegreesbelow.com/photography/embedded-color-space-information.html
uint ccc = ctx.DecoderFrame.Frame.GetColorContextCount();
var fmt = ctx.Source.Format;
var profiles = new IWICColorContext[ccc];
var profile = default(IWICColorContext);
if (ccc > 0)
{
for (int i = 0; i < ccc; i++)
{
profiles[i] = ctx.AddRef(Wic.Factory.CreateColorContext());
}
ctx.DecoderFrame.Frame.GetColorContexts(ccc, profiles);
}
foreach (var cc in profiles)
{
var cct = cc.GetType();
if (cct == WICColorContextType.WICColorContextProfile)
{
int ccs = (int)cc.GetProfileBytes(0, null);
// don't try to read giant profiles. 4MiB is more than enough
if ((uint)ccs > (1024 * 1024 * 4))
{
continue;
}
using (var ccb = MemoryPool <byte> .Shared.Rent(ccs))
{
MemoryMarshal.TryGetArray(ccb.Memory.Slice(0, ccs), out ArraySegment <byte> cca);
cc.GetProfileBytes((uint)cca.Count, cca.Array);
var cpi = ColorProfile.Cache.GetOrAdd(cca);
// match only color profiles that match our intended use. if we have a standard sRGB profile, don't save it; we don't need to convert
if (cpi.IsValid && (
(cpi.DataColorSpace == ColorProfile.ProfileColorSpace.Rgb && (fmt.ColorRepresentation == PixelColorRepresentation.Bgr || fmt.ColorRepresentation == PixelColorRepresentation.Rgb) && !cpi.IsSrgb) ||
(cpi.DataColorSpace == ColorProfile.ProfileColorSpace.Grey && fmt.ColorRepresentation == PixelColorRepresentation.Grey && !cpi.IsSrgbCurve) ||
(cpi.DataColorSpace == ColorProfile.ProfileColorSpace.Cmyk && fmt.ColorRepresentation == PixelColorRepresentation.Cmyk)
))
{
profile = cc;
if (cpi.IsRgbMatrix || cpi.IsGreyTrc)
{
ctx.SourceColorProfile = cpi;
}
break;
}
}
}
else if (cct == WICColorContextType.WICColorContextExifColorSpace && cc.GetExifColorSpace() == ExifColorSpace.AdobeRGB)
{
profile = cc;
break;
}
}
var defaultColorContext = fmt.ColorRepresentation == PixelColorRepresentation.Grey ? Wic.GreyContext.Value : Wic.SrgbContext.Value;
ctx.SourceColorContext = profile ?? (fmt.ColorRepresentation == PixelColorRepresentation.Cmyk ? Wic.CmykContext.Value : null);
ctx.DestColorContext = ctx.Settings.ColorProfileMode <= ColorProfileMode.NormalizeAndEmbed || ctx.SourceColorContext is null ? defaultColorContext : ctx.SourceColorContext;
var defaultColorProfile = fmt.ColorRepresentation == PixelColorRepresentation.Grey ? ColorProfile.sGrey : ColorProfile.sRGB;
ctx.SourceColorProfile = ctx.SourceColorProfile ?? defaultColorProfile;
ctx.DestColorProfile = ctx.Settings.ColorProfileMode <= ColorProfileMode.NormalizeAndEmbed ? defaultColorProfile : ctx.SourceColorProfile;
}
public WicPlanarCache(IWICPlanarBitmapSourceTransform source, WICBitmapPlaneDescription descY, WICBitmapPlaneDescription descC, WICRect crop, WICBitmapTransformOptions transformOptions, uint width, uint height, double ratio)
{
subsampleRatioX = Math.Ceiling((double)descY.Width / descC.Width);
subsampleRatioY = Math.Ceiling((double)descY.Height / descC.Height);
var scrop = new WICRect {
X = (int)Math.Floor(crop.X / ratio),
Y = (int)Math.Floor(crop.Y / ratio),
Width = Math.Min((int)Math.Ceiling(crop.Width / ratio), (int)descY.Width),
Height = Math.Min((int)Math.Ceiling(crop.Height / ratio), (int)descY.Height)
};
if (subsampleRatioX > 1d)
{
if (scrop.X % subsampleRatioX > double.Epsilon)
{
scrop.X = (int)(scrop.X / subsampleRatioX) * (int)subsampleRatioX;
}
if (scrop.Width % subsampleRatioX > double.Epsilon)
{
scrop.Width = (int)Math.Min(Math.Ceiling(scrop.Width / subsampleRatioX) * (int)subsampleRatioX, descY.Width - scrop.X);
}
descC.Width = Math.Min((uint)Math.Ceiling(scrop.Width / subsampleRatioX), descC.Width);
descY.Width = (uint)Math.Min(descC.Width * subsampleRatioX, scrop.Width);
}
else
{
descC.Width = descY.Width = (uint)scrop.Width;
}
if (subsampleRatioY > 1d)
{
if (scrop.Y % subsampleRatioY > double.Epsilon)
{
scrop.Y = (int)(scrop.Y / subsampleRatioY) * (int)subsampleRatioY;
}
if (scrop.Height % subsampleRatioY > double.Epsilon)
{
scrop.Height = (int)Math.Min(Math.Ceiling(scrop.Height / subsampleRatioY) * (int)subsampleRatioY, descY.Height - scrop.Y);
}
descC.Height = Math.Min((uint)Math.Ceiling(scrop.Height / subsampleRatioY), descC.Height);
descY.Height = (uint)Math.Min(descC.Height * subsampleRatioY, scrop.Height);
}
else
{
descC.Height = descY.Height = (uint)scrop.Height;
}
sourceTransform = source;
sourceTransformOptions = transformOptions;
scaledCrop = scrop;
scaledWidth = width;
scaledHeight = height;
strideY = scrop.Width + 3 & ~3;
strideC = (int)Math.Ceiling(scrop.Width / subsampleRatioX) * 2 + 3 & ~3;
buffHeightY = Math.Min(scrop.Height, transformOptions.RequiresCache() ? scrop.Height : 16);
buffHeightC = (int)Math.Ceiling(buffHeightY / subsampleRatioY);
sourceY = new PlanarPixelSource(this, WicPlane.Luma, descY);
sourceC = new PlanarPixelSource(this, WicPlane.Chroma, descC);
}
public static void AddMetadataReader(WicProcessingContext ctx, bool basicOnly = false)
{
if (ctx.DecoderFrame.Frame == null)
{
return;
}
if (ctx.DecoderFrame.Frame.TryGetMetadataQueryReader(out var metareader))
{
ctx.AddRef(metareader);
// Exif orientation
if (metareader.TryGetMetadataByName("System.Photo.Orientation", out var pv))
{
#pragma warning disable 0618 // VarEnum is obsolete
if (pv.UnmanagedType == VarEnum.VT_UI2)
{
ctx.DecoderFrame.ExifOrientation = (Orientation)Math.Min(Math.Max((ushort)Orientation.Normal, (ushort)pv.Value), (ushort)Orientation.Rotate270);
}
#pragma warning restore 0618
var opt = ctx.DecoderFrame.ExifOrientation.ToWicTransformOptions();
if (ctx.DecoderFrame.SupportsPlanarPipeline && opt != WICBitmapTransformOptions.WICBitmapTransformRotate0 && ctx.DecoderFrame.Frame is IWICPlanarBitmapSourceTransform ptrans)
{
uint pw = 1, ph = 1;
var pdesc = new WICBitmapPlaneDescription[2];
var pfmts = new[] { Consts.GUID_WICPixelFormat8bppY, Consts.GUID_WICPixelFormat16bppCbCr };
ctx.DecoderFrame.SupportsPlanarPipeline = ptrans.DoesSupportTransform(ref pw, ref ph, opt, WICPlanarOptions.WICPlanarOptionsDefault, pfmts, pdesc, 2);
}
}
if (basicOnly)
{
return;
}
// other requested properties
var propdic = new Dictionary <string, PropVariant>();
foreach (string prop in ctx.Settings.MetadataNames ?? Enumerable.Empty <string>())
{
if (metareader.TryGetMetadataByName(prop, out var pvar) && pvar.Value != null)
{
propdic[prop] = pvar;
}
}
ctx.DecoderFrame.Metadata = propdic;
}
if (basicOnly)
{
return;
}
// ICC profiles
//http://ninedegreesbelow.com/photography/embedded-color-space-information.html
uint ccc = ctx.DecoderFrame.Frame.GetColorContextCount();
var profiles = new IWICColorContext[ccc];
var profile = default(IWICColorContext);
if (ccc > 0)
{
for (int i = 0; i < ccc; i++)
{
profiles[i] = ctx.AddRef(Wic.Factory.CreateColorContext());
}
ctx.DecoderFrame.Frame.GetColorContexts(ccc, profiles);
}
foreach (var cc in profiles)
{
var cct = cc.GetType();
if (cct == WICColorContextType.WICColorContextProfile)
{
uint ccs = cc.GetProfileBytes(0, null);
var ccb = ArrayPool <byte> .Shared.Rent((int)ccs);
cc.GetProfileBytes(ccs, ccb);
var cp = new ColorProfileInfo(new ArraySegment <byte>(ccb, 0, (int)ccs));
ArrayPool <byte> .Shared.Return(ccb);
// match only color profiles that match our intended use. if we have a standard sRGB profile, don't save it; we don't need to convert
if (cp.IsValid && ((cp.IsDisplayRgb && !cp.IsStandardSrgb) || (cp.IsCmyk && ctx.Source.Format.ColorRepresentation == PixelColorRepresentation.Cmyk) /* || (Context.IsGreyscale && cp.DataColorSpace == "GRAY") */))
{
profile = cc;
break;
}
}
else if (cct == WICColorContextType.WICColorContextExifColorSpace && cc.GetExifColorSpace() == ExifColorSpace.AdobeRGB)
{
profile = cc;
break;
}
}
ctx.SourceColorContext = profile ?? (ctx.Source.Format.ColorRepresentation == PixelColorRepresentation.Cmyk ? cmykProfile.Value : null);
ctx.DestColorContext = srgbProfile.Value;
}
public WicPlanarCache(IWICPlanarBitmapSourceTransform source, WICBitmapPlaneDescription descY, WICBitmapPlaneDescription descC, in Rectangle crop, WICBitmapTransformOptions transformOptions, uint width, uint height, double ratio)
public WicPlanarCacheSource(IWICPlanarBitmapSourceTransform source, WICBitmapPlaneDescription descY, WICBitmapPlaneDescription descC, WICRect crop, WICBitmapTransformOptions transformOptions, uint width, uint height, double ratio, bool cacheFull)
{
this.cacheFull = cacheFull;
// TODO fractional ratio support?
subsampleRatioX = Math.Ceiling((double)descY.Width / descC.Width);
subsampleRatioY = Math.Ceiling((double)descY.Height / descC.Height);
var scrop = new WICRect {
X = (int)Math.Floor(crop.X / ratio),
Y = (int)Math.Floor(crop.Y / ratio),
Width = Math.Min((int)Math.Ceiling(crop.Width / ratio), (int)descY.Width),
Height = Math.Min((int)Math.Ceiling(crop.Height / ratio), (int)descY.Height)
};
if (subsampleRatioX > 1d)
{
if (scrop.X % subsampleRatioX > 0d)
{
scrop.X = (int)(scrop.X / subsampleRatioX) * (int)subsampleRatioX;
}
if (scrop.Width % subsampleRatioX > 0d)
{
scrop.Width = (int)Math.Min(Math.Ceiling(scrop.Width / subsampleRatioX) * (int)subsampleRatioX, descY.Width);
}
descC.Width = Math.Min((uint)Math.Ceiling(scrop.Width / subsampleRatioX), descC.Width);
descY.Width = (uint)Math.Min(descC.Width * subsampleRatioX, scrop.Width);
}
else
{
descC.Width = descY.Width = (uint)scrop.Width;
}
if (subsampleRatioY > 1d)
{
if (scrop.Y % subsampleRatioY > 0d)
{
scrop.Y = (int)(scrop.Y / subsampleRatioY) * (int)subsampleRatioY;
}
if (scrop.Height % subsampleRatioY > 0d)
{
scrop.Height = (int)Math.Min(Math.Ceiling(scrop.Height / subsampleRatioY) * (int)subsampleRatioY, descY.Height);
}
descC.Height = Math.Min((uint)Math.Ceiling(scrop.Height / subsampleRatioY), descC.Height);
descY.Height = (uint)Math.Min(descC.Height * subsampleRatioY, scrop.Height);
}
else
{
descC.Height = descY.Height = (uint)scrop.Height;
}
sourceTransform = source;
sourceTransformOptions = transformOptions;
scaledCrop = scrop;
scaledWidth = width;
scaledHeight = height;
strideY = scrop.Width + 3 & ~3;
buffHeightY = Math.Min(scrop.Height, cacheFull ? scrop.Height : 16);
strideC = (int)Math.Ceiling(scrop.Width / subsampleRatioX) * 2 + 3 & ~3;
buffHeightC = (int)Math.Ceiling(buffHeightY / subsampleRatioY);
sourceY = new WicPlanarSource(this, WicPlane.Luma, descY);
sourceC = new WicPlanarSource(this, WicPlane.Chroma, descC);
}
