public async Task <SavingError> SaveVideoAsync(StorageFile file)
{
var audioPath = file.Path;
if (App.Locator.CollectionService.VideoAlreadyExists(audioPath))
{
return(SavingError.AlreadyExists);
}
#region Getting metadata
#region id3 tags
TagLib.Tag tags = null;
TimeSpan duration;
// var tryAsM4A = false;
var fileStream = await file.OpenStreamForReadAsync();
TagLib.File tagFile = null;
try
{
tagFile = TagLib.File.Create(new TagLib.StreamFileAbstraction(file.Name, fileStream, fileStream));
_currupt = false;
}
catch (Exception e)
{
// tryAsM4A = e is CorruptFileException;
if (e.InnerException != null)
{
Debug.WriteLine(e.InnerException.Message);
}
_currupt = true;
}
if (!_currupt)
{
tags = tagFile == null ? null : tagFile.Tag;
if (tags != null)
{
duration = tagFile.Properties.Duration;
}
fileStream.Dispose();
if (tagFile != null)
{
tagFile.Dispose();
}
#endregion
LocalVideo video;
//if there aren't any id3tags, try using the properties from the file
var prop = await file.Properties.GetVideoPropertiesAsync().AsTask().ConfigureAwait(false);
video = new LocalVideo(prop)
{
FilePath = audioPath,
};
var val = video.ToVideo();
#endregion
//if no metadata was obtain, then result to using the filename
if (string.IsNullOrEmpty(val.Title))
{
val.Title = file.DisplayName;
val.Author = file.DisplayName;
}
if (App.Locator.CollectionService.VideoAlreadyExists(val.Title, val.Author))
{
return(SavingError.AlreadyExists);
}
StorageItemThumbnail thumb;
try
{
try
{
thumb = await file.GetThumbnailAsync(ThumbnailMode.VideosView);
}
catch
{
thumb = null;
}
await App.Locator.CollectionService.AddVideoAsync(val, tags, thumb).ConfigureAwait(false);
return(SavingError.None);
}
catch
{
return(SavingError.Unknown);
}
}
else
{
return(SavingError.Unknown);
}
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.Parameter.GetType() == typeof(List <VideoInfo>))
{
// 读取在线视频信息
isLocal = false;
infos = e.Parameter as List <VideoInfo>;
Index = Convert.ToInt32(infos[0].Cid) + 1;
if (Index == 1)
{
left.Visibility = Visibility.Collapsed;
}
if (infos.Count <= 2 || Index == infos.Count - 1)
{
right.Visibility = Visibility.Collapsed;
}
if (SettingHelper.ContainsKey("_videoformat"))
{
format = SettingHelper.GetValue("_videoformat").ToString() == "0"
? VideoFormat.mp4
: VideoFormat.flv;
}
// 默认的格式：mp4
else
{
format = VideoFormat.mp4;
}
await read(Index);
}
else
{
isLocal = true;
btn_Switchffmpeg.Visibility = Visibility.Visible;
JsonObject json = new JsonObject();
if (e.Parameter.GetType() == typeof(string))
{
// 文件关联
string a = e.Parameter.ToString();
if (a[0] == '@')
{
left.Visibility = right.Visibility = Visibility.Collapsed;
string path = e.Parameter.ToString().Substring(1);
file = await StorageFile.GetFileFromPathAsync(path);
await GetInfoAsync();
Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(file);
status.Text += "正在读取弹幕...";
var danmupool = await GetDanmu(file);
status.Text += Environment.NewLine + "正在读取视频...";
txt_title.Text = file.DisplayName;
var stream = await file.OpenAsync(FileAccessMode.Read);
media.SetSource(stream, file.ContentType);
status.Text += "完毕";
await Task.Delay(500);
return;
}
}
// 读取本地视频
if (e.Parameter.GetType() == typeof(StorageFile))
{
left.Visibility = right.Visibility = Visibility.Collapsed;
file = e.Parameter as StorageFile;
await GetInfoAsync();
if (file != null)
{
Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(file);
status.Text += "正在读取弹幕...";
var danmupool = await GetDanmu(file);
status.Text += Environment.NewLine + "正在读取视频...";
txt_title.Text = file.DisplayName;
// 系统原生支持的类型
if (VideoHelper.videoExtensions_sys.Contains(file.FileType))
{
var stream = await file.OpenAsync(FileAccessMode.Read);
media.SetSource(stream, file.ContentType);
status.Text += "完毕";
await Task.Delay(500);
return;
}
else
{
await SetFFmpegSource(file);
status.Text += "完毕";
await Task.Delay(500);
return;
}
}
}
// 下载列表
if (e.Parameter.GetType() == typeof(LocalVideo))
{
LocalVideo myVideo = e.Parameter as LocalVideo;
if (myVideo != null)
{
left.Visibility = right.Visibility = Visibility.Collapsed;
part = myVideo.Part;
folder = myVideo.Folder;
StorageFolder myfolder = await KnownFolders.VideosLibrary.GetFolderAsync("哔哩哔哩");
myfolder = await myfolder.GetFolderAsync(folder);
// 文件的原本名称是 part_index, 而弹幕文件是 part, 不冲突
string filename = $"{part}{myVideo.Format}";
file = await myfolder.GetFileAsync(filename);
await GetInfoAsync();
Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(file);
status.Text += "正在读取弹幕...";
var danmupool = await GetDanmu(file);
if (danmupool != null)
{
DanmuPool = danmupool;
}
status.Text += Environment.NewLine + "正在读取视频...";
txt_title.Text = part.Split('_')[0];
// 如果是系统原生支持的格式，直接设置媒体源
if (VideoHelper.videoExtensions_sys.Contains(file.FileType))
{
var stream = await file.OpenAsync(FileAccessMode.Read);
media.SetSource(stream, file.ContentType);
status.Text += "完毕";
await Task.Delay(500);
return;
}
// 否则，使用ffmpeg
else
{
await SetFFmpegSource(file);
return;
}
}
}
}
}
