NullKit

1.3.0

Public/media/ConvertTo-Image.ps1

enum ImageFormat { MemoryBMP; Bmp ; Emf; Wmf; Jpeg; Png; Gif; Tiff; Exif; PhotoCD; Icon }

function ConvertTo-Image {
    <#
.SYNOPSIS
Converts input to an image
 
.DESCRIPTION
Converts input file to an image. Supported output types: MemoryBMP, Bmp , Emf, Wmf, Jpeg, Png, Gif, Tiff, Exif, PhotoCD, Icon
 
.PARAMETER Files
Input files
 
.PARAMETER Format
Output Image format type
 
.EXAMPLE
Get-ChildItem C:\test -Filter "*.gif" | ConvertTo-Image -Format Png
Converts all gif animations from location 'C:\test' into png files
 
#>

    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true)]
        $Files,
        [ImageFormat]
        [Parameter(Mandatory = $true, Position = 1)]
        $Format
    )

    begin {
        Write-Verbose "Conversion start"
    }
    process {
        function Get-ImageFormat {
            param ($format)
            switch ($format) {
                "MemoryBMP" { [System.Drawing.Imaging.ImageFormat]::MemoryBMP }
                "Bmp" { [System.Drawing.Imaging.ImageFormat]::Bmp }
                "Emf" { [System.Drawing.Imaging.ImageFormat]::Emf }
                "Wmf" { [System.Drawing.Imaging.ImageFormat]::Wmf }
                "Jpeg" { [System.Drawing.Imaging.ImageFormat]::Jpeg }
                "Png" { [System.Drawing.Imaging.ImageFormat]::Png }
                "Gif" { [System.Drawing.Imaging.ImageFormat]::Gif }
                "Tiff" { [System.Drawing.Imaging.ImageFormat]::Tiff }
                "Exif" { [System.Drawing.Imaging.ImageFormat]::Exif }
                "Icon" { [System.Drawing.Imaging.ImageFormat]::Icon }
                Default { }
            }
        }

        $formatType = Get-ImageFormat $Format
        $fullName = $input.FullName
        $image = [System.Drawing.Image]::FromFile($fullName);
        $filePath = [IO.Path]::ChangeExtension($fullName, ".$($formatType.ToString().ToLower())");
        $image.Save($filePath, $formatType);
        $image.Dispose();
    }
    end {
        Write-Verbose "Conversion done"
    }
}