mirror of
https://github.com/transmission/transmission
synced 2024-12-26 09:37:56 +00:00
73 lines
2.5 KiB
PowerShell
73 lines
2.5 KiB
PowerShell
$ErrorActionPreference = 'Stop'
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# Adapted from: https://gist.github.com/darkfall/1656050
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Add-Type -AssemblyName System.Drawing
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$outputFileName = $args[0]
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$inputFileNames = $args[1..$args.Count]
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$inputImages = [System.Collections.ArrayList]@()
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foreach ($inputFileName in $inputFileNames) {
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$resolvedInputFileName = $ExecutionContext.SessionState.Path.GetResolvedPSPathFromPSPath($inputFileName)
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Write-Output "Input[$($inputImages.Count)]: $inputFileName ($resolvedInputFileName)"
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$inputBitmap = New-Object System.Drawing.Bitmap "$resolvedInputFileName"
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if ($inputBitmap.Width -ne $inputBitmap.Height) {
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throw "Input image is not square ($($inputBitmap.Width) != $($inputBitmap.Height))"
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}
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$inputStream = New-Object System.IO.MemoryStream
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$inputBitmap.Save($inputStream, [System.Drawing.Imaging.ImageFormat]::Png)
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$inputImage = @{
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Size = $inputBitmap.Width
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Bytes = $inputStream.ToArray()
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}
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Write-Output " Size = $($inputImage.Size), Bytes = $($inputImage.Bytes.Count)"
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[void]$inputImages.Add($inputImage)
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$inputBitmap.Dispose()
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$inputStream.Dispose()
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}
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$resolvedOutputFileName = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($outputFileName)
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Write-Output "Output: $outputFileName ($resolvedOutputFileName)"
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$outputFile = [System.IO.File]::Create($resolvedOutputFileName)
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$outputFileWriter = New-Object System.IO.BinaryWriter($outputFile)
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$outputFileWriter.Write([short]0) # 0-1 reserved, 0
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$outputFileWriter.Write([short]1) # 2-3 image type, 1 = icon, 2 = cursor
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$outputFileWriter.Write([short]$inputImages.Count) # 4-5 number of images
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$offset = 6 + (16 * $inputImages.Count)
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for ($i = 0; $i -lt $inputImages.Count; ++$i) {
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$size = $inputImages[$i].Size
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if ($size -eq 256) {
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$size = 0
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}
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$outputFileWriter.Write([byte]$size) # 0 image width
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$outputFileWriter.Write([byte]$size) # 1 image height
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$outputFileWriter.Write([byte]0) # 2 number of colors
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$outputFileWriter.Write([byte]0) # 3 reserved
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$outputFileWriter.Write([short]0) # 4-5 color planes
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$outputFileWriter.Write([short]32) # 6-7 bits per pixel
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$outputFileWriter.Write([int]$inputImages[$i].Bytes.Count) # 8-11 size of image data
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$outputFileWriter.Write([int]$offset) # 12-15 offset of image data
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$offset += $inputImages[$i].Bytes.Count
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}
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for ($i = 0; $i -lt $inputImages.Count; ++$i) {
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# write image data
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# png data must contain the whole png data file
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$outputFileWriter.Write($inputImages[$i].Bytes)
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}
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$outputFileWriter.Flush()
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$outputFile.Close()
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