Delegate TiffRgbaImage.PutContigDelegate

Delegate for "put" method (the method that is called to pack pixel data in the raster) used when converting contiguously packed samples.

Namespace: BitMiracle.LibTiff.Classic

Assembly: BitMiracle.LibTiff.NET.dll

Syntax

public delegate void PutContigDelegate(TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift, int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift);

Parameters

Type	Name	Description
TiffRgbaImage	img	An instance of the TiffRgbaImage class.
System.Int32[]	raster	The raster (the buffer to place decoded image data to).
System.Int32	rasterOffset	The zero-based byte offset in raster at which to begin storing decoded bytes.
System.Int32	rasterShift	The value that should be added to rasterOffset after each row processed.
System.Int32	x	The x-coordinate of the first pixel in block of pixels to be decoded.
System.Int32	y	The y-coordinate of the first pixel in block of pixels to be decoded.
System.Int32	width	The block width.
System.Int32	height	The block height.
System.Byte[]	buffer	The buffer with image data.
System.Int32	offset	The zero-based byte offset in buffer at which to begin reading image bytes.
System.Int32	bufferShift	The value that should be added to offset after each row processed.

Remarks

The image reading and conversion methods invoke "put" methods to copy/image/whatever tiles of raw image data. A default set of methods is provided to convert/copy raw image data to 8-bit packed ABGR format rasters. Applications can supply alternate methods that unpack the data into a different format or, for example, unpack the data and draw the unpacked raster on the display.

To setup custom "put" method for contiguously packed samples please use PutContig property.

The bufferShift is usually 0. It is greater than 0 if width of strip being converted is greater than image width or part of the tile being converted is outside the image (may be true for tiles on the right and bottom edge of the image). In other words, bufferShift is used to make up for any padding on the end of each line of the buffer with image data.

The rasterShift is 0 if width of tile being converted is equal to image width and image data should not be flipped vertically. In other circumstances rasterShift is used to make up for any padding on the end of each line of the raster and/or for flipping purposes.