74 lines
2.5 KiB
PowerShell
74 lines
2.5 KiB
PowerShell
$ErrorActionPreference = 'Stop'
|
|
|
|
# Adapted from: https://gist.github.com/darkfall/1656050
|
|
|
|
Add-Type -AssemblyName System.Drawing
|
|
|
|
$outputFileName = $args[0]
|
|
$inputFileNames = $args[1..$args.Count]
|
|
|
|
$inputImages = [System.Collections.ArrayList]@()
|
|
|
|
foreach ($inputFileName in $inputFileNames) {
|
|
$resolvedInputFileName = $ExecutionContext.SessionState.Path.GetResolvedPSPathFromPSPath($inputFileName)
|
|
Write-Output "Input[$($inputImages.Count)]: $inputFileName ($resolvedInputFileName)"
|
|
|
|
$inputBitmap = New-Object System.Drawing.Bitmap "$resolvedInputFileName"
|
|
if ($inputBitmap.Width -ne $inputBitmap.Height) {
|
|
throw "Input image is not square ($($inputBitmap.Width) != $($inputBitmap.Height))"
|
|
}
|
|
|
|
$inputStream = New-Object System.IO.MemoryStream
|
|
$inputBitmap.Save($inputStream, [System.Drawing.Imaging.ImageFormat]::Png)
|
|
|
|
$inputImage = @{
|
|
Size = $inputBitmap.Width
|
|
Bytes = $inputStream.ToArray()
|
|
}
|
|
Write-Output " Size = $($inputImage.Size), Bytes = $($inputImage.Bytes.Count)"
|
|
|
|
[void]$inputImages.Add($inputImage)
|
|
|
|
$inputBitmap.Dispose()
|
|
$inputStream.Dispose()
|
|
}
|
|
|
|
$resolvedOutputFileName = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($outputFileName)
|
|
Write-Output "Output: $outputFileName ($resolvedOutputFileName)"
|
|
|
|
$outputFile = [System.IO.File]::Create($resolvedOutputFileName)
|
|
|
|
$outputFileWriter = New-Object System.IO.BinaryWriter($outputFile)
|
|
$outputFileWriter.Write([short]0) # 0-1 reserved, 0
|
|
$outputFileWriter.Write([short]1) # 2-3 image type, 1 = icon, 2 = cursor
|
|
$outputFileWriter.Write([short]$inputImages.Count) # 4-5 number of images
|
|
|
|
$offset = 6 + (16 * $inputImages.Count)
|
|
|
|
for ($i = 0; $i -lt $inputImages.Count; ++$i) {
|
|
$size = $inputImages[$i].Size
|
|
if ($size -eq 256) {
|
|
$size = 0
|
|
}
|
|
|
|
$outputFileWriter.Write([byte]$size) # 0 image width
|
|
$outputFileWriter.Write([byte]$size) # 1 image height
|
|
$outputFileWriter.Write([byte]0) # 2 number of colors
|
|
$outputFileWriter.Write([byte]0) # 3 reserved
|
|
$outputFileWriter.Write([short]0) # 4-5 color planes
|
|
$outputFileWriter.Write([short]32) # 6-7 bits per pixel
|
|
$outputFileWriter.Write([int]$inputImages[$i].Bytes.Count) # 8-11 size of image data
|
|
$outputFileWriter.Write([int]$offset) # 12-15 offset of image data
|
|
|
|
$offset += $inputImages[$i].Bytes.Count
|
|
}
|
|
|
|
for ($i = 0; $i -lt $inputImages.Count; ++$i) {
|
|
# write image data
|
|
# png data must contain the whole png data file
|
|
$outputFileWriter.Write($inputImages[$i].Bytes)
|
|
}
|
|
|
|
$outputFileWriter.Flush()
|
|
$outputFile.Close()
|