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131 lines
3.9 KiB
PowerShell
131 lines
3.9 KiB
PowerShell
# SRT library download and install for Windows.
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# Copyright (c) 2021, Thierry Lelegard
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# All rights reserved.
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<#
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.SYNOPSIS
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Download and install the libsrt library for Windows. This script is
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provided to automate the build of Windows applications using libsrt.
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.PARAMETER Destination
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Specify a local directory where the libsrt package will be downloaded.
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By default, use "tmp" subdirectory from this script.
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.PARAMETER ForceDownload
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Force a download even if the package is already downloaded.
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.PARAMETER GitHubActions
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When used in a GitHub Actions workflow, make sure that the LIBSRT
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environment variable is propagated to subsequent jobs.
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.PARAMETER NoInstall
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Do not install the package. By default, libsrt is installed.
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.PARAMETER NoPause
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Do not wait for the user to press <enter> at end of execution. By default,
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execute a "pause" instruction at the end of execution, which is useful
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when the script was run from Windows Explorer.
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#>
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[CmdletBinding(SupportsShouldProcess=$true)]
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param(
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[string]$Destination = "",
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[switch]$ForceDownload = $false,
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[switch]$GitHubActions = $false,
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[switch]$NoInstall = $false,
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[switch]$NoPause = $false
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)
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Write-Output "libsrt download and installation procedure"
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# Default directory for downloaded products.
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if (-not $Destination) {
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$Destination = "$PSScriptRoot\tmp"
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}
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# A function to exit this script.
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function Exit-Script([string]$Message = "")
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{
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$Code = 0
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if ($Message -ne "") {
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Write-Output "ERROR: $Message"
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$Code = 1
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}
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if (-not $NoPause) {
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pause
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}
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exit $Code
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}
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# Without this, Invoke-WebRequest is awfully slow.
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$ProgressPreference = 'SilentlyContinue'
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# Get the URL of the latest libsrt installer.
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$URL = (Invoke-RestMethod "https://api.github.com/repos/Haivision/srt/releases?per_page=20" |
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ForEach-Object { $_.assets } |
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ForEach-Object { $_.browser_download_url } |
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Select-String @("/libsrt-.*\.exe$", "/libsrt-.*-win-installer\.zip$") |
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Select-Object -First 1)
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if (-not $URL) {
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Exit-Script "Could not find a libsrt installer on GitHub"
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}
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if (-not ($URL -match "\.zip$") -and -not ($URL -match "\.exe$")) {
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Exit-Script "Unexpected URL, not .exe, not .zip: $URL"
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}
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# Installer name and path.
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$InstName = (Split-Path -Leaf $URL)
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$InstPath = "$Destination\$InstName"
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# Create the directory for downloaded products when necessary.
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[void](New-Item -Path $Destination -ItemType Directory -Force)
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# Download installer
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if (-not $ForceDownload -and (Test-Path $InstPath)) {
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Write-Output "$InstName already downloaded, use -ForceDownload to download again"
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}
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else {
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Write-Output "Downloading $URL ..."
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Invoke-WebRequest $URL.ToString() -UseBasicParsing -UserAgent Download -OutFile $InstPath
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if (-not (Test-Path $InstPath)) {
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Exit-Script "$URL download failed"
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}
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}
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# If installer is an archive, expect an exe with same name inside.
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if ($InstName -match "\.zip$") {
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# Expected installer name in archive.
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$ZipName = $InstName
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$ZipPath = $InstPath
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$InstName = $ZipName -replace '-win-installer.zip','.exe'
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$InstPath = "$Destination\$InstName"
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# Extract the installer.
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Remove-Item -Force $InstPath -ErrorAction SilentlyContinue
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Write-Output "Expanding $ZipName ..."
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Expand-Archive $ZipPath -DestinationPath $Destination
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if (-not (Test-Path $InstPath)) {
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Exit-Script "$InstName not found in $ZipName"
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}
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}
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# Install libsrt
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if (-not $NoInstall) {
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Write-Output "Installing $InstName"
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Start-Process -FilePath $InstPath -ArgumentList @("/S") -Wait
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}
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# Propagate LIBSRT in next jobs for GitHub Actions.
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if ($GitHubActions -and (-not -not $env:GITHUB_ENV) -and (Test-Path $env:GITHUB_ENV)) {
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$libsrt = [System.Environment]::GetEnvironmentVariable("LIBSRT","Machine")
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Write-Output "LIBSRT=$libsrt" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
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}
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Exit-Script
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