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ConvertAsync(ILeadStream,ILeadStream,RasterImageFormat,Int32,Int32,Int32,Int32,CodecsImageInfo) Method

Summary

Converts an image stream from one format to another, creating a new image file in a stream in the new format.

Syntax

WinRT C#

C++

public IAsyncAction ConvertAsync(  
   ILeadStream srcStream, 
   ILeadStream destStream, 
   Leadtools.RasterImageFormat format, 
   int width, 
   int height, 
   int bitsPerPixel, 
   int pageNumber, 
   Leadtools.Codecs.CodecsImageInfo info 
)

Public Overloads Function ConvertAsync( _ 
   ByVal srcStream As ILeadStream, _ 
   ByVal destStream As ILeadStream, _ 
   ByVal format As Leadtools.RasterImageFormat, _ 
   ByVal width As Integer, _ 
   ByVal height As Integer, _ 
   ByVal bitsPerPixel As Integer, _ 
   ByVal pageNumber As Integer, _ 
   ByVal info As Leadtools.Codecs.CodecsImageInfo _ 
) As IAsyncAction

public IAsyncAction ConvertAsync(  
   ILeadStream srcStream, 
   ILeadStream destStream, 
   Leadtools.RasterImageFormat format, 
   int width, 
   int height, 
   int bitsPerPixel, 
   int pageNumber, 
   Leadtools.Codecs.CodecsImageInfo info 
)

 function Leadtools.Codecs.RasterCodecs.ConvertAsync(ILeadStream,ILeadStream,RasterImageFormat,Int32,Int32,Int32,Int32,CodecsImageInfo)(  
   srcStream , 
   destStream , 
   format , 
   width , 
   height , 
   bitsPerPixel , 
   pageNumber , 
   info  
)

public: 
IAsyncAction^ ConvertAsync(  
   ILeadStream^ srcStream, 
   ILeadStream^ destStream, 
   Leadtools.RasterImageFormat format, 
   int width, 
   int height, 
   int bitsPerPixel, 
   int pageNumber, 
   Leadtools.Codecs.CodecsImageInfo^ info 
)

Parameters

srcStream
A ILeadStream containing the data of the input image file.

destStream
A ILeadStream that will contain the data of the output image file.

format
The output file format. For valid values, refer to Summary of All Supported Image File Formats.

width
New width of the output image. If this value is not 0, then the output file will be resized to the width value. Use a value of 0 if you do not wish to resize the output file.

height
New height of the output image. If this value is not 0, then the output file will be resized to the height value. Use a value of 0 if you do not wish to resize the output file.

bitsPerPixel
The output image pixel depth. Note that not all bits per pixel are available to all file formats.

pageNumber
The 1-based page number to convert.

info
A CodecsImageInfo object specifying more options for the conversion.

Return Value

An asynchronous convert operation on a RasterCodecs object.

Remarks

If you convert to a lower bits-per-pixel format, this method optimizes the colors automatically. For example, when converting a 24-bit file (16 million colors) to an 8-bit file (256 colors) this method selects the best 256 colors to represent the 24-bit image

Note that this is a high-level method that does conversion from all possible formats to all possible formats.

Requirements

Target Platforms

Reference

RasterCodecs Class

RasterCodecs Members

Overload List

Help Version 19.0.2017.10.27

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies