Open Source Computer Vision Library https://opencv.org/
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$url = "https://raw.githubusercontent.com/opencv/opencv_3rdparty/@FFMPEG_BINARIES_COMMIT@/ffmpeg/opencv_ffmpeg_64.dll"
$expected_md5 = "@FFMPEG_FILE_HASH_BIN64@"
$output = "$PSScriptRoot\@OPENCV_BIN_INSTALL_PATH@\opencv_ffmpeg@OPENCV_DLLVERSION@_64.dll"
Write-Output ("=" * 120)
try {
Get-content -Path "$PSScriptRoot\@OPENCV_LICENSES_INSTALL_PATH@\ffmpeg-readme.txt" -ErrorAction 'Stop'
} catch {
Write-Output "Refer to OpenCV FFmpeg wrapper readme notes about library usage / licensing details."
}
Write-Output ("=" * 120)
Write-Output ""
if(![System.IO.File]::Exists($output)) {
try {
[io.file]::OpenWrite($output).close()
} catch {
Write-Warning "Unable to write: $output"
if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
Write-Warning "Launching with 'Administrator' elevated privileges..."
Pause
Start-Process powershell.exe "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`"" -Verb RunAs
exit
} else {
Write-Output "FATAL: Unable to write with elevated privileges: $output"
Pause
exit 1
}
}
try {
Write-Output ("Downloading: " + $output)
Import-Module BitsTransfer
$start_time = Get-Date
Start-BitsTransfer -Source $url -Destination $output -ErrorAction 'Stop'
Write-Output "Downloaded in $((Get-Date).Subtract($start_time).Seconds) seconds"
} catch {
$_ # Dump error
try {
Write-Output ("Downloading (second attempt): " + $output)
$start_time = Get-Date
Invoke-WebRequest -Uri $url -OutFile $output
Write-Output "Downloaded in $((Get-Date).Subtract($start_time).Seconds) seconds"
} catch {
Write-Output ("Can't download file: " + $output)
Write-Output ("URL: " + $url)
Write-Output "You need to download this file manually. Stop"
Pause
Exit
}
}
} else {
Write-Output ("File exists: " + $output)
Write-Output ("Downloading is skipped. Remove this file and re-run this script to force downloading.")
}
if(![System.IO.File]::Exists($output)) {
Write-Output ("Destination file not found: " + $output)
Write-Output "Stop"
Pause
Exit
}
try {
$hash = Get-FileHash $output -Algorithm MD5 -ErrorAction 'Stop'
if($hash.Hash -eq $expected_md5) {
Write-Output "MD5 check passed"
} else {
Write-Output ("MD5 : " + $hash.Hash.toLower())
Write-Output ("Expected: " + $expected_md5)
Write-Output "MD5 hash mismatch"
}
} catch {
$_ # Dump error
Write-Output "Can't check MD5 hash (requires PowerShell 4+)"
}
Pause
Write-Output "Exit"