private async void DownloadAudio(int position, string path)
{
if (position < 0 || position > queue.Count || queue[position].State != DownloadState.None)
{
return;
}
System.Console.WriteLine("&Downloading audio of: " + queue[position].Name);
queue[position].State = DownloadState.Initialization;
UpdateList(position);
while (downloadCount >= maxDownload)
{
await Task.Delay(1000);
}
downloadCount++;
currentStrike++;
CreateNotification(queue[position].Name);
try
{
YoutubeClient client = new YoutubeClient();
Video video = await client.GetVideoAsync(queue[position].YoutubeID);
MediaStreamInfoSet mediaStreamInfo = await client.GetVideoMediaStreamInfosAsync(queue[position].YoutubeID);
MediaStreamInfo streamInfo;
if (mediaStreamInfo.Audio.Count > 0)
{
streamInfo = mediaStreamInfo.Audio.Where(x => x.Container == Container.Mp4).OrderBy(s => s.Bitrate).Last();
}
else if (mediaStreamInfo.Muxed.Count > 0)
{
streamInfo = mediaStreamInfo.Muxed.Where(x => x.Container == Container.Mp4).OrderBy(x => x.Resolution).Last();
}
else
{
queue[position].State = DownloadState.Error;
downloadCount--;
if (queue.Count != 0)
{
DownloadAudio(queue.FindIndex(x => x.State == DownloadState.None), path);
}
Playlist.instance?.Activity.RunOnUiThread(() => { Playlist.instance.CheckForSync(); });
return;
}
queue[position].State = DownloadState.Downloading;
UpdateList(position);
string title = video.Title;
foreach (char c in Path.GetInvalidFileNameChars()) //Make the title a valid filename (remove /, \, : etc).
{
title = title.Replace(c, ' ');
}
string fileExtension = "m4a"; //audio only extension containing aac (audio codex of the mp4)
string outpath = path;
if (queue[position].PlaylistName != null)
{
outpath = Path.Combine(path, queue[position].PlaylistName);
Directory.CreateDirectory(outpath);
}
string filePath = Path.Combine(outpath, title + "." + fileExtension);
if (File.Exists(filePath))
{
int i = 1;
string defaultPath = filePath;
do
{
filePath = Path.Combine(outpath, title + " (" + i + ")." + fileExtension);
i++;
}while (File.Exists(filePath));
}
MediaStream input = await client.GetMediaStreamAsync(streamInfo);
queue[position].Path = filePath;
files.Add(filePath);
FileStream output = File.Create(filePath);
byte[] buffer = new byte[4096];
int byteReaded = 0;
while (byteReaded < input.Length)
{
int read = await input.ReadAsync(buffer, 0, 4096);
await output.WriteAsync(buffer, 0, read);
byteReaded += read;
UpdateProgressBar(position, byteReaded / input.Length);
}
output.Dispose();
queue[position].State = DownloadState.MetaData;
UpdateList(position);
if (queue.Count == 1)
{
SetNotificationProgress(100, true);
}
SetMetaData(position, video.Title, video.Author, video.Thumbnails);
files.Remove(filePath);
downloadCount--;
if (queue.Count != 0)
{
DownloadAudio(queue.FindIndex(x => x.State == DownloadState.None), path);
}
Playlist.instance?.Activity.RunOnUiThread(() => { Playlist.instance.CheckForSync(); });
}
catch (System.Net.Http.HttpRequestException)
{
MainActivity.instance.Timout();
Cancel();
}
catch (DirectoryNotFoundException)
{
Handler handler = new Handler(Looper.MainLooper);
handler.Post(() => { Toast.MakeText(Application.Context, Resource.String.download_path_error, ToastLength.Long).Show(); });
Cancel();
}
catch
{
MainActivity.instance.UnknowError(ErrorCode.DL1);
Cancel();
}
}
