public void Move(StorageFile file) { File.Move(ToString(), file.ToString()); }
private static void AddToFile(YoutubeEntry entry, Uri uri, Stream destinationStream, long? start, long? stop, MSYoutubeLoading onYoutubeLoading, StorageFile storageFile, bool retry = false)
{
if (entry.ExecutionStatus != ExecutionStatus.Normal) return;
var response = DownloadToStreamAsync(uri, start, stop);
var cache = CacheManager.Instance;
if (response == null || response.StatusCode == HttpStatusCode.RequestedRangeNotSatisfiable) {
cache.SetUrl(entry.YoutubeUrl.VideoId, entry.Title, (new FileInfo(storageFile.ToString())).Length);
return;
}
var range = GetRange(response);
var total = range.Length;
cache.SetUrl(entry.YoutubeUrl.VideoId, entry.Title, total);
var to = range.To;
using (var stream = response.GetResponseStream()) {
if (stream == null) return;
try {
stream.CopyTo(destinationStream);
destinationStream.Flush();
} catch (WebException) {
if (retry) return;
AddToFile(entry, uri, destinationStream, start, stop, onYoutubeLoading, storageFile, true);
}
if (onYoutubeLoading != null && entry.ExecutionStatus == ExecutionStatus.Normal) onYoutubeLoading(to, total);
if (total > to + 1)
AddToFile(entry, uri, destinationStream, to + 1, to + BlockSize, onYoutubeLoading, storageFile);
}
}
protected void TranscodeFile(StorageFile videoFile, StorageFile audioFile)
{
var tmpFile = KnownFolders.TempFolder.CreateFile(Guid.NewGuid().ToString("N") + ".mp3");
var arguments = String.Format("-i \"{0}\" -acodec mp3 -y -ac 2 -ab 160 \"{1}\"", videoFile, tmpFile);
var process = new Process {
EnableRaisingEvents = true,
StartInfo =
{
FileName = _applicationPath + "\\Executables\\ffmpeg.exe",
Arguments = arguments,
CreateNoWindow = true,
RedirectStandardError = true,
RedirectStandardOutput = true,
UseShellExecute = false,
}
};
if (_onEntryDownloadStatusChange != null)
{
_onEntryDownloadStatusChange(_youtubeEntry, DownloadState.ConvertAudioStart, 50);
}
process.Start();
using (var d = process.StandardError) {
var duration = new TimeSpan();
do
{
var s = d.ReadLine() ?? "";
if (s.Contains("Duration: "))
{
duration = ParseDuration("Duration: ", ',', s);
}
else
{
if (s.Contains(" time="))
{
var current = ParseDuration(" time=", ' ', s);
var percentage = (current.TotalMilliseconds / duration.TotalMilliseconds) * 50;
if (_onEntryDownloadStatusChange != null)
{
_onEntryDownloadStatusChange(_youtubeEntry, DownloadState.DownloadProgressChanged, 50 + percentage);
}
}
}
} while (!d.EndOfStream);
}
process.WaitForExit();
DownloadState state;
if (process.ExitCode == 0)
{
try {
Tag(tmpFile.ToString());
tmpFile.Move(audioFile);
state = DownloadState.Ready;
} catch {
state = DownloadState.Error;
}
}
else
{
if (tmpFile.Exists())
{
tmpFile.Delete();
}
state = DownloadState.Error;
}
if (_onEntryDownloadStatusChange != null)
{
_onEntryDownloadStatusChange(_youtubeEntry, state, 100.0);
}
process.Close();
}
public static void DownloadToFileAsync(YoutubeEntry entry, Uri uri, StorageFile storageFile, MSYoutubeLoading onYoutubeLoading)
{
if (entry.ExecutionStatus != ExecutionStatus.Normal) return;
using (var destinationStream = storageFile.OpenStreamForWrite()) {
if (destinationStream == null) return;
var start = destinationStream.Length;
destinationStream.Position = destinationStream.Length;
AddToFile(entry, uri, destinationStream, start, start + BlockSize - 1, onYoutubeLoading, storageFile);
}
}
public bool NeedsDownload(string videoId, StorageFile storageFile)
{
if (UrlCaches.ContainsKey(videoId) && storageFile.Exists()) {
var fileName = storageFile.ToString();
var urlCache = UrlCaches[videoId];
if (storageFile.Length >= urlCache.Length) {
if (!VideoCaches.ContainsKey(fileName))
SetFinished(urlCache.VideoId, fileName, false);
else if (VideoCaches[fileName].Finished)
return false;
}
foreach (var item in VideoCaches.Where(p => p.Value.FileName != fileName && p.Value.Finished && File.Exists(p.Value.FileName) && p.Value.VideoId == videoId)) {
try {
File.Copy(item.Value.FileName, fileName, true);
} catch (IOException) {
return true;
}
SetFinished(urlCache.VideoId, fileName, true);
return false;
}
}
return true;
}
