public FFmpegCrawler(ILoggerFactory factory, ICompressor compressor, string ffmpegDir)
{
_logger = factory.CreateFileLogger();
_compressor = compressor;
_ffmpegDir = ffmpegDir;
_infoBinPath = Path.Combine(_ffmpegDir, InfoBinName);
if (File.Exists(_infoBinPath))
{
CurrentFFmpegVersion = _compressor.DeCompress <RemoteFFmpegVersion>(File.ReadAllBytes(_infoBinPath));
_logger.Info($"Local FFmpeg info found");
_logger.Info($"Local FFmpeg version = [{CurrentFFmpegVersion.Version}]");
}
}
public bool TryLoadLatestVersion()
{
try
{
List <RemoteFFmpegVersion> links = new List <RemoteFFmpegVersion>();
string url = "https://ffmpeg.zeranoe.com/builds/win64/static/";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
string html = reader.ReadToEnd();
Regex regex = new Regex("^<a href=\".*\">(?<name>.*)</a>\\s+(?<date>\\S* \\S*)\\s+(?<size>.*)", RegexOptions.Multiline);
MatchCollection matches = regex.Matches(html);
if (matches.Count > 0)
{
ProcessMatches(links, matches);
}
}
var latestFromWeb = links.OrderByDescending(x => x.Date).FirstOrDefault();
_logger.Info($"Remote FFmpeg info found");
_logger.Info($"Remote FFmpeg version = [{latestFromWeb.Version}]");
if (CurrentFFmpegVersion == null || latestFromWeb.Version > CurrentFFmpegVersion.Version)
{
CurrentFFmpegVersion = latestFromWeb;
File.WriteAllBytes(_infoBinPath, _compressor.Compress(CurrentFFmpegVersion));
CleanUpOldFFmpegExecutables();
DownloadLatest();
_logger.Info($"Remote FFmpeg downloaded");
}
return(true);
}
catch (Exception ex)
{
_logger.Fatal(ex);
return(false);
}
}
