private static Texture DecodeMultiframe(ImagingFactory imagingFactory, WicFlags flags, TextureDescription description, BitmapDecoder decoder) { var texture = new Texture(description); Guid dstFormat = ToWic(description.Format, false); for (int index = 0; index < description.ArraySize; ++index) { var image = texture.Images[index]; using (var frame = decoder.GetFrame(index)) { var pfGuid = frame.PixelFormat; var size = frame.Size; if (size.Width == description.Width && size.Height == description.Height) { // This frame does not need resized if (pfGuid == dstFormat) { frame.CopyPixels(image.Data, image.RowPitch); } else { using (var converter = new FormatConverter(imagingFactory)) { converter.Initialize(frame, dstFormat, GetWicDither(flags), null, 0, BitmapPaletteType.Custom); converter.CopyPixels(image.Data, image.RowPitch); } } } else { // This frame needs resizing using (var scaler = new BitmapScaler(imagingFactory)) { scaler.Initialize(frame, description.Width, description.Height, GetWicInterp(flags)); Guid pfScaler = scaler.PixelFormat; if (pfScaler == dstFormat) { scaler.CopyPixels(image.Data, image.RowPitch); } else { // The WIC bitmap scaler is free to return a different pixel format than the source image, so here we // convert it to our desired format using (var converter = new FormatConverter(imagingFactory)) { converter.Initialize(scaler, dstFormat, GetWicDither(flags), null, 0, BitmapPaletteType.Custom); converter.CopyPixels(image.Data, image.RowPitch); } } } } } } return texture; }
/// <summary> /// Function to clip or scale the bitmap up or down to the size of the buffer. /// </summary> /// <param name="bitmap">Bitmap to scale.</param> /// <param name="filter">Filtering to apply to the scaled bitmap.</param> /// <param name="buffer">Buffer to receive the scaled bitmap.</param> /// <param name="clip">TRUE to clip, FALSE to scale.</param> /// <returns>TRUE if clipping/scaling was performed, FALSE if not.</returns> private bool ResizeBitmap(WIC.BitmapSource bitmap, WIC.BitmapInterpolationMode filter, GorgonImageBuffer buffer, bool clip) { if (!clip) { using (var scaler = new WIC.BitmapScaler(Factory)) { scaler.Initialize(bitmap, buffer.Width, buffer.Height, filter); scaler.CopyPixels(buffer.PitchInformation.RowPitch, buffer.Data.BasePointer, buffer.PitchInformation.SlicePitch); } return(true); } if ((buffer.Width >= bitmap.Size.Width) && (buffer.Height >= bitmap.Size.Height)) { return(false); } ClipBitmap(bitmap, buffer); return(true); }
//------------------------------------------------------------------------------------- // Decodes an image array, resizing/format converting as needed //------------------------------------------------------------------------------------- private static Image DecodeMultiframe(WICFlags flags, ImageDescription metadata, WIC.BitmapDecoder decoder) { var image = Image.New(metadata); Guid sourceGuid; if (!ToWIC(metadata.Format, out sourceGuid)) { return(null); } for (int index = 0; index < metadata.ArraySize; ++index) { var pixelBuffer = image.PixelBuffer[index, 0]; using (var frame = decoder.GetFrame(index)) { var pfGuid = frame.PixelFormat; var size = frame.Size; if (pfGuid == sourceGuid) { if (size.Width == metadata.Width && size.Height == metadata.Height) { // This frame does not need resized or format converted, just copy... frame.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } else { // This frame needs resizing, but not format converted using (var scaler = new WIC.BitmapScaler(Factory)) { scaler.Initialize(frame, metadata.Width, metadata.Height, GetWICInterp(flags)); scaler.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } } } else { // This frame required format conversion using (var converter = new WIC.FormatConverter(Factory)) { converter.Initialize(frame, pfGuid, GetWICDither(flags), null, 0, WIC.BitmapPaletteType.Custom); if (size.Width == metadata.Width && size.Height == metadata.Height) { converter.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } else { // This frame needs resizing, but not format converted using (var scaler = new WIC.BitmapScaler(Factory)) { scaler.Initialize(frame, metadata.Width, metadata.Height, GetWICInterp(flags)); scaler.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } } } } } } return(image); }
//------------------------------------------------------------------------------------- // Decodes an image array, resizing/format converting as needed //------------------------------------------------------------------------------------- private static Image DecodeMultiframe(WICFlags flags, ImageDescription metadata, BitmapDecoder decoder) { var image = Image.New(metadata); Guid sourceGuid; if (!ToWIC(metadata.Format, out sourceGuid)) return null; for (int index = 0; index < metadata.ArraySize; ++index) { var pixelBuffer = image.PixelBuffer[index, 0]; using (var frame = decoder.GetFrame(index)) { var pfGuid = frame.PixelFormat; var size = frame.Size; if (pfGuid == sourceGuid) { if (size.Width == metadata.Width && size.Height == metadata.Height) { // This frame does not need resized or format converted, just copy... frame.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } else { // This frame needs resizing, but not format converted using (var scaler = new BitmapScaler(Factory)) { scaler.Initialize(frame, metadata.Width, metadata.Height, GetWICInterp(flags)); scaler.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } } } else { // This frame required format conversion using (var converter = new FormatConverter(Factory)) { converter.Initialize(frame, pfGuid, GetWICDither(flags), null, 0, BitmapPaletteType.Custom); if (size.Width == metadata.Width && size.Height == metadata.Height) { converter.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } else { // This frame needs resizing, but not format converted using (var scaler = new BitmapScaler(Factory)) { scaler.Initialize(frame, metadata.Width, metadata.Height, GetWICInterp(flags)); scaler.CopyPixels(pixelBuffer.RowStride, pixelBuffer.DataPointer, pixelBuffer.BufferStride); } } } } } } return image; }