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创建内建下载器

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This commit is contained in:
croire 2022-05-11 21:47:46 +08:00
parent 1dff44f9d4
commit 32c892c380
4 changed files with 955 additions and 691 deletions
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1
DownKyi/DownKyi.csproj
View File

@ -117,6 +117,7 @@
<Compile Include="Models\OrderFormatDisplay.cs" />
<Compile Include="Services\AlertService.cs" />
<Compile Include="Services\Download\AddToDownloadService.cs" />
<Compile Include="Services\Download\BuiltinDownloadService.cs" />
<Compile Include="Services\Download\DownloadStorageService.cs" />
<Compile Include="Services\SearchService.cs" />
<Compile Include="Utils\WindowAdaptation.cs" />

708
DownKyi/Services/Download/AriaDownloadService.cs
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@ -3,15 +3,10 @@ using DownKyi.Core.Aria2cNet.Client;
using DownKyi.Core.Aria2cNet.Client.Entity;
using DownKyi.Core.Aria2cNet.Server;
using DownKyi.Core.BiliApi.Login;
using DownKyi.Core.BiliApi.VideoStream;
using DownKyi.Core.BiliApi.VideoStream.Models;
using DownKyi.Core.Danmaku2Ass;
using DownKyi.Core.FFmpeg;
using DownKyi.Core.Logging;
using DownKyi.Core.Settings;
using DownKyi.Core.Storage;
using DownKyi.Core.Utils;
using DownKyi.Images;
using DownKyi.Models;
using DownKyi.Utils;
using DownKyi.ViewModels.DownloadManager;
@ -20,7 +15,6 @@ using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace DownKyi.Services.Download
@ -30,14 +24,6 @@ namespace DownKyi.Services.Download
/// </summary>
public class AriaDownloadService : DownloadService, IDownloadService
{
private Task workTask;
private CancellationTokenSource tokenSource;
private CancellationToken cancellationToken;
private List<Task> downloadingTasks = new List<Task>();
private readonly int retry = 5;
private readonly string nullMark = "<null>";
public AriaDownloadService(ObservableCollection<DownloadingItem> downloadingList, ObservableCollection<DownloadedItem> downloadedList) : base(downloadingList, downloadedList)
{
Tag = "AriaDownloadService";
@ -50,40 +36,9 @@ namespace DownKyi.Services.Download
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
public string DownloadAudio(DownloadingItem downloading)
public override string DownloadAudio(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingAudio");
// 如果没有Dash，返回null
if (downloading.PlayUrl == null || downloading.PlayUrl.Dash == null) { return null; }
// 如果audio列表没有内容，则返回null
if (downloading.PlayUrl.Dash.Audio == null) { return null; }
else if (downloading.PlayUrl.Dash.Audio.Count == 0) { return null; }
// 根据音频id匹配
PlayUrlDashVideo downloadAudio = null;
foreach (PlayUrlDashVideo audio in downloading.PlayUrl.Dash.Audio)
{
if (audio.Id == downloading.AudioCodec.Id)
{
downloadAudio = audio;
break;
}
}
// 避免Dolby==null及其它未知情况，直接使用异常捕获
try
{
// Dolby Atmos
if (downloading.AudioCodec.Id == 30250)
{
downloadAudio = downloading.PlayUrl.Dash.Dolby.Audio[0];
}
}
catch (Exception) { }
PlayUrlDashVideo downloadAudio = BaseDownloadAudio(downloading);
return DownloadVideo(downloading, downloadAudio);
}
@ -93,29 +48,9 @@ namespace DownKyi.Services.Download
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
public string DownloadVideo(DownloadingItem downloading)
public override string DownloadVideo(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingVideo");
// 如果没有Dash，返回null
if (downloading.PlayUrl == null || downloading.PlayUrl.Dash == null) { return null; }
// 如果Video列表没有内容，则返回null
if (downloading.PlayUrl.Dash.Video == null) { return null; }
else if (downloading.PlayUrl.Dash.Video.Count == 0) { return null; }
// 根据视频编码匹配
PlayUrlDashVideo downloadVideo = null;
foreach (PlayUrlDashVideo video in downloading.PlayUrl.Dash.Video)
{
if (video.Id == downloading.Resolution.Id && Utils.GetVideoCodecName(video.Codecs) == downloading.VideoCodecName)
{
downloadVideo = video;
break;
}
}
PlayUrlDashVideo downloadVideo = BaseDownloadVideo(downloading);
return DownloadVideo(downloading, downloadVideo);
}
@ -199,150 +134,27 @@ namespace DownKyi.Services.Download
/// 下载封面
/// </summary>
/// <param name="downloading"></param>
public string DownloadCover(DownloadingItem downloading, string coverUrl, string fileName)
public override string DownloadCover(DownloadingItem downloading, string coverUrl, string fileName)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingCover");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
// 查询、保存封面
StorageCover storageCover = new StorageCover();
string cover = storageCover.GetCover(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid, coverUrl);
if (cover == null)
{
return null;
}
// 复制图片到指定位置
try
{
File.Copy(cover, fileName, true);
// 记录本次下载的文件
if (!downloading.Downloading.DownloadFiles.ContainsKey(coverUrl))
{
downloading.Downloading.DownloadFiles.Add(coverUrl, fileName);
}
return fileName;
}
catch (Exception e)
{
Core.Utils.Debugging.Console.PrintLine(e);
LogManager.Error(Tag, e);
}
return null;
return BaseDownloadCover(downloading, coverUrl, fileName);
}
/// <summary>
/// 下载弹幕
/// </summary>
/// <param name="downloading"></param>
public string DownloadDanmaku(DownloadingItem downloading)
public override string DownloadDanmaku(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingDanmaku");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
string title = $"{downloading.Name}";
string assFile = $"{downloading.DownloadBase.FilePath}.ass";
// 记录本次下载的文件
if (!downloading.Downloading.DownloadFiles.ContainsKey("danmaku"))
{
downloading.Downloading.DownloadFiles.Add("danmaku", assFile);
}
int screenWidth = SettingsManager.GetInstance().GetDanmakuScreenWidth();
int screenHeight = SettingsManager.GetInstance().GetDanmakuScreenHeight();
//if (SettingsManager.GetInstance().IsCustomDanmakuResolution() != AllowStatus.YES)
//{
// if (downloadingEntity.Width > 0 && downloadingEntity.Height > 0)
// {
// screenWidth = downloadingEntity.Width;
// screenHeight = downloadingEntity.Height;
// }
//}
// 字幕配置
Config subtitleConfig = new Config
{
Title = title,
ScreenWidth = screenWidth,
ScreenHeight = screenHeight,
FontName = SettingsManager.GetInstance().GetDanmakuFontName(),
BaseFontSize = SettingsManager.GetInstance().GetDanmakuFontSize(),
LineCount = SettingsManager.GetInstance().GetDanmakuLineCount(),
LayoutAlgorithm = SettingsManager.GetInstance().GetDanmakuLayoutAlgorithm().ToString("G").ToLower(), // async/sync
TuneDuration = 0,
DropOffset = 0,
BottomMargin = 0,
CustomOffset = 0
};
Core.Danmaku2Ass.Bilibili.GetInstance()
.SetTopFilter(SettingsManager.GetInstance().GetDanmakuTopFilter() == AllowStatus.YES)
.SetBottomFilter(SettingsManager.GetInstance().GetDanmakuBottomFilter() == AllowStatus.YES)
.SetScrollFilter(SettingsManager.GetInstance().GetDanmakuScrollFilter() == AllowStatus.YES)
.Create(downloading.DownloadBase.Avid, downloading.DownloadBase.Cid, subtitleConfig, assFile);
return assFile;
return BaseDownloadDanmaku(downloading);
}
/// <summary>
/// 下载字幕
/// </summary>
/// <param name="downloading"></param>
public List<string> DownloadSubtitle(DownloadingItem downloading)
public override List<string> DownloadSubtitle(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingSubtitle");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
List<string> srtFiles = new List<string>();
var subRipTexts = VideoStream.GetSubtitle(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid);
if (subRipTexts == null)
{
return null;
}
foreach (var subRip in subRipTexts)
{
string srtFile = $"{downloading.DownloadBase.FilePath}_{subRip.LanDoc}.srt";
try
{
File.WriteAllText(srtFile, subRip.SrtString);
// 记录本次下载的文件
if (!downloading.Downloading.DownloadFiles.ContainsKey("subtitle"))
{
downloading.Downloading.DownloadFiles.Add("subtitle", srtFile);
}
srtFiles.Add(srtFile);
}
catch (Exception e)
{
Core.Utils.Debugging.Console.PrintLine("DownloadSubtitle()发生异常: {0}", e);
LogManager.Error("DownloadSubtitle()", e);
}
}
return srtFiles;
return BaseDownloadSubtitle(downloading);
}
/// <summary>
@ -352,84 +164,22 @@ namespace DownKyi.Services.Download
/// <param name="audioUid"></param>
/// <param name="videoUid"></param>
/// <returns></returns>
public string MixedFlow(DownloadingItem downloading, string audioUid, string videoUid)
public override string MixedFlow(DownloadingItem downloading, string audioUid, string videoUid)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("MixedFlow");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingVideo");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
if (videoUid == nullMark)
{
return null;
}
string finalFile = $"{downloading.DownloadBase.FilePath}.mp4";
if (videoUid == null)
{
finalFile = $"{downloading.DownloadBase.FilePath}.aac";
}
// 合并音视频
FFmpegHelper.MergeVideo(audioUid, videoUid, finalFile);
// 获取文件大小
if (File.Exists(finalFile))
{
FileInfo info = new FileInfo(finalFile);
downloading.FileSize = Format.FormatFileSize(info.Length);
}
else
{
downloading.FileSize = Format.FormatFileSize(0);
}
return finalFile;
return BaseMixedFlow(downloading, audioUid, videoUid);
}
/// <summary>
/// 解析视频流的下载链接
/// </summary>
/// <param name="downloading"></param>
public void Parse(DownloadingItem downloading)
public override void Parse(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("Parsing");
downloading.DownloadContent = string.Empty;
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
if (downloading.PlayUrl != null && downloading.Downloading.DownloadStatus == DownloadStatus.NOT_STARTED)
{
// 设置下载状态
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOADING;
return;
}
// 设置下载状态
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOADING;
// 解析
switch (downloading.Downloading.PlayStreamType)
{
case PlayStreamType.VIDEO:
downloading.PlayUrl = VideoStream.GetVideoPlayUrl(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid);
break;
case PlayStreamType.BANGUMI:
downloading.PlayUrl = VideoStream.GetBangumiPlayUrl(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid);
break;
case PlayStreamType.CHEESE:
downloading.PlayUrl = VideoStream.GetCheesePlayUrl(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid, downloading.DownloadBase.EpisodeId);
break;
default:
break;
}
BaseParse(downloading);
}
/// <summary>
@ -437,48 +187,8 @@ namespace DownKyi.Services.Download
/// </summary>
private async Task EndTask()
{
// 结束任务
tokenSource.Cancel();
await workTask;
//先简单等待一下
// 下载数据存储服务
DownloadStorageService downloadStorageService = new DownloadStorageService();
// 保存数据
foreach (DownloadingItem item in downloadingList)
{
switch (item.Downloading.DownloadStatus)
{
case DownloadStatus.NOT_STARTED:
break;
case DownloadStatus.WAIT_FOR_DOWNLOAD:
break;
case DownloadStatus.PAUSE_STARTED:
break;
case DownloadStatus.PAUSE:
break;
case DownloadStatus.DOWNLOADING:
// TODO 添加设置让用户选择重启后是否自动开始下载
item.Downloading.DownloadStatus = DownloadStatus.WAIT_FOR_DOWNLOAD;
//item.Downloading.DownloadStatus = DownloadStatus.PAUSE;
break;
case DownloadStatus.DOWNLOAD_SUCCEED:
case DownloadStatus.DOWNLOAD_FAILED:
break;
default:
break;
}
item.Progress = 0;
downloadStorageService.UpdateDownloading(item);
}
foreach (DownloadedItem item in downloadedList)
{
downloadStorageService.UpdateDownloaded(item);
}
// 停止基本任务
await BaseEndTask();
// 关闭Aria服务器
await CloseAriaServer();
@ -500,395 +210,15 @@ namespace DownKyi.Services.Download
// 启动Aria服务器
StartAriaServer();
tokenSource = new CancellationTokenSource();
cancellationToken = tokenSource.Token;
workTask = Task.Run(DoWork);
}
/// <summary>
/// 执行任务
/// </summary>
private async Task DoWork()
{
// 上次循环时正在下载的数量
int lastDownloadingCount = 0;
while (true)
{
int maxDownloading = SettingsManager.GetInstance().GetAriaMaxConcurrentDownloads();
int downloadingCount = 0;
try
{
downloadingTasks.RemoveAll((m) => m.IsCompleted);
foreach (DownloadingItem downloading in downloadingList)
{
if (downloading.Downloading.DownloadStatus == DownloadStatus.DOWNLOADING)
{
downloadingCount++;
}
}
foreach (DownloadingItem downloading in downloadingList)
{
if (downloadingCount >= maxDownloading)
{
break;
}
// 开始下载
if (downloading.Downloading.DownloadStatus == DownloadStatus.NOT_STARTED || downloading.Downloading.DownloadStatus == DownloadStatus.WAIT_FOR_DOWNLOAD)
{
//这里需要立刻设置状态，否则如果SingleDownload没有及时执行，会重复创建任务
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOADING;
downloadingTasks.Add(SingleDownload(downloading));
downloadingCount++;
}
}
}
catch (InvalidOperationException e)
{
Core.Utils.Debugging.Console.PrintLine("Start DoWork()发生InvalidOperationException异常: {0}", e);
LogManager.Error("Start DoWork() InvalidOperationException", e);
}
catch (Exception e)
{
Core.Utils.Debugging.Console.PrintLine("Start DoWork()发生异常: {0}", e);
LogManager.Error("Start DoWork()", e);
}
// 判断是否该结束线程，若为true，跳出while循环
if (cancellationToken.IsCancellationRequested)
{
Core.Utils.Debugging.Console.PrintLine("AriaDownloadService: 下载服务结束，跳出while循环");
LogManager.Debug(Tag, "下载服务结束");
break;
}
// 判断下载列表中的视频是否全部下载完成
if (lastDownloadingCount > 0 && downloadingList.Count == 0 && downloadedList.Count > 0)
{
AfterDownload();
}
lastDownloadingCount = downloadingList.Count;
// 降低CPU占用
await Task.Delay(500);
}
await Task.WhenAny(Task.WhenAll(downloadingTasks), Task.Delay(30000));
foreach (Task tsk in downloadingTasks.FindAll((m) => !m.IsCompleted))
{
Core.Utils.Debugging.Console.PrintLine("AriaDownloadService: 任务结束超时");
LogManager.Debug(Tag, "任务结束超时");
}
}
/// <summary>
/// 下载一个视频
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
private async Task SingleDownload(DownloadingItem downloading)
{
// 路径
downloading.DownloadBase.FilePath = downloading.DownloadBase.FilePath.Replace("\\", "/");
string[] temp = downloading.DownloadBase.FilePath.Split('/');
//string path = downloading.DownloadBase.FilePath.Replace(temp[temp.Length - 1], "");
string path = downloading.DownloadBase.FilePath.TrimEnd(temp[temp.Length - 1].ToCharArray());
// 路径不存在则创建
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
try
{
await Task.Run(new Action(() =>
{
// 初始化
downloading.DownloadStatusTitle = string.Empty;
downloading.DownloadContent = string.Empty;
//downloading.Downloading.DownloadFiles.Clear();
// 解析并依次下载音频、视频、弹幕、字幕、封面等内容
Parse(downloading);
// 暂停
Pause(downloading);
string audioUid = null;
// 如果需要下载音频
if (downloading.DownloadBase.NeedDownloadContent["downloadAudio"])
{
//audioUid = DownloadAudio(downloading);
for (int i = 0; i < retry; i++)
{
audioUid = DownloadAudio(downloading);
if (audioUid != null && audioUid != nullMark)
{
break;
}
}
}
if (audioUid == nullMark)
{
DownloadFailed(downloading);
return;
}
// 暂停
Pause(downloading);
string videoUid = null;
// 如果需要下载视频
if (downloading.DownloadBase.NeedDownloadContent["downloadVideo"])
{
//videoUid = DownloadVideo(downloading);
for (int i = 0; i < retry; i++)
{
videoUid = DownloadVideo(downloading);
if (videoUid != null && videoUid != nullMark)
{
break;
}
}
}
if (videoUid == nullMark)
{
DownloadFailed(downloading);
return;
}
// 暂停
Pause(downloading);
string outputDanmaku = null;
// 如果需要下载弹幕
if (downloading.DownloadBase.NeedDownloadContent["downloadDanmaku"])
{
outputDanmaku = DownloadDanmaku(downloading);
}
// 暂停
Pause(downloading);
List<string> outputSubtitles = null;
// 如果需要下载字幕
if (downloading.DownloadBase.NeedDownloadContent["downloadSubtitle"])
{
outputSubtitles = DownloadSubtitle(downloading);
}
// 暂停
Pause(downloading);
string outputCover = null;
string outputPageCover = null;
// 如果需要下载封面
if (downloading.DownloadBase.NeedDownloadContent["downloadCover"])
{
string fileName = $"{downloading.DownloadBase.FilePath}.{GetImageExtension(downloading.DownloadBase.PageCoverUrl)}";
// page的封面
outputPageCover = DownloadCover(downloading, downloading.DownloadBase.PageCoverUrl, fileName);
// 封面
outputCover = DownloadCover(downloading, downloading.DownloadBase.CoverUrl, $"{path}/Cover.{GetImageExtension(downloading.DownloadBase.CoverUrl)}");
}
// 暂停
Pause(downloading);
// 混流
string outputMedia = string.Empty;
if (downloading.DownloadBase.NeedDownloadContent["downloadAudio"] || downloading.DownloadBase.NeedDownloadContent["downloadVideo"])
{
outputMedia = MixedFlow(downloading, audioUid, videoUid);
}
// 这里本来只有IsExist，没有pause，不知道怎么处理
// 是否存在
//isExist = IsExist(downloading);
//if (!isExist.Result)
//{
// return;
//}
// 检测音频、视频是否下载成功
bool isMediaSuccess = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadAudio"] || downloading.DownloadBase.NeedDownloadContent["downloadVideo"])
{
// 只有下载音频不下载视频时才输出aac
// 只要下载视频就输出mp4
if (File.Exists(outputMedia))
{
// 成功
isMediaSuccess = true;
}
else
{
isMediaSuccess = false;
}
}
// 检测弹幕是否下载成功
bool isDanmakuSuccess = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadDanmaku"])
{
if (File.Exists(outputDanmaku))
{
// 成功
isDanmakuSuccess = true;
}
else
{
isDanmakuSuccess = false;
}
}
// 检测字幕是否下载成功
bool isSubtitleSuccess = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadSubtitle"])
{
if (outputSubtitles == null)
{
// 为null时表示不存在字幕
}
else
{
foreach (string subtitle in outputSubtitles)
{
if (!File.Exists(subtitle))
{
// 如果有一个不存在则失败
isSubtitleSuccess = false;
}
}
}
}
// 检测封面是否下载成功
bool isCover = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadCover"])
{
if (File.Exists(outputCover) || File.Exists(outputPageCover))
{
// 成功
isCover = true;
}
else
{
isCover = false;
}
}
if (!isMediaSuccess || !isDanmakuSuccess || !isSubtitleSuccess || !isCover)
{
DownloadFailed(downloading);
return;
}
// 下载完成后处理
Downloaded downloaded = new Downloaded
{
MaxSpeedDisplay = Format.FormatSpeed(downloading.Downloading.MaxSpeed),
};
// 设置完成时间
downloaded.SetFinishedTimestamp(new DateTimeOffset(DateTime.UtcNow).ToUnixTimeSeconds());
DownloadedItem downloadedItem = new DownloadedItem
{
DownloadBase = downloading.DownloadBase,
Downloaded = downloaded
};
App.PropertyChangeAsync(new Action(() =>
{
// 加入到下载完成list中，并从下载中list去除
downloadedList.Add(downloadedItem);
downloadingList.Remove(downloading);
// 下载完成列表排序
DownloadFinishedSort finishedSort = SettingsManager.GetInstance().GetDownloadFinishedSort();
App.SortDownloadedList(finishedSort);
}));
}));
}
catch (OperationCanceledException)
{
}
}
/// <summary>
/// 下载失败后的处理
/// </summary>
/// <param name="downloading"></param>
private void DownloadFailed(DownloadingItem downloading)
{
downloading.DownloadStatusTitle = DictionaryResource.GetString("DownloadFailed");
downloading.DownloadContent = string.Empty;
downloading.DownloadingFileSize = string.Empty;
downloading.SpeedDisplay = string.Empty;
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOAD_FAILED;
downloading.StartOrPause = ButtonIcon.Instance().Retry;
downloading.StartOrPause.Fill = DictionaryResource.GetColor("ColorPrimary");
}
/// <summary>
/// 下载完成后的操作
/// </summary>
private void AfterDownload()
{
AfterDownloadOperation operation = SettingsManager.GetInstance().GetAfterDownloadOperation();
switch (operation)
{
case AfterDownloadOperation.NONE:
// 没有操作
break;
case AfterDownloadOperation.OPEN_FOLDER:
// 打开文件夹
break;
case AfterDownloadOperation.CLOSE_APP:
// 关闭程序
App.PropertyChangeAsync(() =>
{
System.Windows.Application.Current.Shutdown();
});
break;
case AfterDownloadOperation.CLOSE_SYSTEM:
// 关机
System.Diagnostics.Process.Start("shutdown.exe", "-s");
break;
default:
break;
}
}
/// <summary>
/// 获取图片的扩展名
/// </summary>
/// <param name="coverUrl"></param>
/// <returns></returns>
private string GetImageExtension(string coverUrl)
{
if (coverUrl == null)
{
return string.Empty;
}
// 图片的扩展名
string[] temp = coverUrl.Split('.');
string fileExtension = temp[temp.Length - 1];
return fileExtension;
// 启动基本服务
BaseStart();
}
/// <summary>
/// 强制暂停
/// </summary>
/// <param name="downloading"></param>
private void Pause(DownloadingItem downloading)
protected override void Pause(DownloadingItem downloading)
{
cancellationToken.ThrowIfCancellationRequested();

181
DownKyi/Services/Download/BuiltinDownloadService.cs Normal file
View File

@ -0,0 +1,181 @@
using DownKyi.Core.BiliApi.VideoStream.Models;
using DownKyi.Models;
using DownKyi.Utils;
using DownKyi.ViewModels.DownloadManager;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
namespace DownKyi.Services.Download
{
public class BuiltinDownloadService : DownloadService, IDownloadService
{
public BuiltinDownloadService(ObservableCollection<DownloadingItem> downloadingList, ObservableCollection<DownloadedItem> downloadedList) : base(downloadingList, downloadedList)
{
Tag = "BuiltinDownloadService";
}
#region 音视频
/// <summary>
/// 下载音频，返回下载文件路径
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
public override string DownloadAudio(DownloadingItem downloading)
{
PlayUrlDashVideo downloadAudio = BaseDownloadAudio(downloading);
return DownloadVideo(downloading, downloadAudio);
}
/// <summary>
/// 下载视频，返回下载文件路径
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
public override string DownloadVideo(DownloadingItem downloading)
{
PlayUrlDashVideo downloadVideo = BaseDownloadVideo(downloading);
return DownloadVideo(downloading, downloadVideo);
}
/// <summary>
/// 将下载音频和视频的函数中相同代码抽象出来
/// </summary>
/// <param name="downloading"></param>
/// <param name="downloadVideo"></param>
/// <returns></returns>
private string DownloadVideo(DownloadingItem downloading, PlayUrlDashVideo downloadVideo)
{
return null;
}
#endregion
/// <summary>
/// 下载封面
/// </summary>
/// <param name="downloading"></param>
/// <param name="coverUrl"></param>
/// <param name="fileName"></param>
/// <returns></returns>
public override string DownloadCover(DownloadingItem downloading, string coverUrl, string fileName)
{
return BaseDownloadCover(downloading, coverUrl, fileName);
}
/// <summary>
/// 下载弹幕
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
public override string DownloadDanmaku(DownloadingItem downloading)
{
return BaseDownloadDanmaku(downloading);
}
/// <summary>
/// 下载字幕
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
public override List<string> DownloadSubtitle(DownloadingItem downloading)
{
return BaseDownloadSubtitle(downloading);
}
/// <summary>
/// 混流音频和视频
/// </summary>
/// <param name="downloading"></param>
/// <param name="audioUid"></param>
/// <param name="videoUid"></param>
/// <returns></returns>
public override string MixedFlow(DownloadingItem downloading, string audioUid, string videoUid)
{
return BaseMixedFlow(downloading, audioUid, videoUid);
}
/// <summary>
/// 解析视频流的下载链接
/// </summary>
/// <param name="downloading"></param>
public override void Parse(DownloadingItem downloading)
{
BaseParse(downloading);
}
/// <summary>
/// 停止下载服务(转换await和Task.Wait两种调用形式)
/// </summary>
private async Task EndTask()
{
// 停止基本任务
await BaseEndTask();
}
/// <summary>
/// 停止下载服务
/// </summary>
public void End()
{
Task.Run(EndTask).Wait();
}
public void Start()
{
// 启动基本服务
BaseStart();
}
/// <summary>
/// 强制暂停
/// </summary>
/// <param name="downloading"></param>
protected override void Pause(DownloadingItem downloading)
{
cancellationToken.ThrowIfCancellationRequested();
downloading.DownloadStatusTitle = DictionaryResource.GetString("Pausing");
if (downloading.Downloading.DownloadStatus == DownloadStatus.PAUSE)
{
throw new OperationCanceledException("Stop thread by pause");
}
// 是否存在
var isExist = IsExist(downloading);
if (!isExist)
{
throw new OperationCanceledException("Task is deleted");
}
}
/// <summary>
/// 是否存在于下载列表中
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
private bool IsExist(DownloadingItem downloading)
{
bool isExist = downloadingList.Contains(downloading);
if (isExist)
{
return true;
}
else
{
return false;
}
}
#region 内建下载器
#endregion
}
}

756
DownKyi/Services/Download/DownloadService.cs
View File

@ -1,15 +1,39 @@
using DownKyi.ViewModels.DownloadManager;
using DownKyi.Core.BiliApi.VideoStream;
using DownKyi.Core.BiliApi.VideoStream.Models;
using DownKyi.Core.Danmaku2Ass;
using DownKyi.Core.FFmpeg;
using DownKyi.Core.Logging;
using DownKyi.Core.Settings;
using DownKyi.Core.Storage;
using DownKyi.Core.Utils;
using DownKyi.Images;
using DownKyi.Models;
using DownKyi.Utils;
using DownKyi.ViewModels.DownloadManager;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
namespace DownKyi.Services.Download
{
public class DownloadService
public abstract class DownloadService
{
protected string Tag = "DownloadService";
protected ObservableCollection<DownloadingItem> downloadingList;
protected ObservableCollection<DownloadedItem> downloadedList;
protected Task workTask;
protected CancellationTokenSource tokenSource;
protected CancellationToken cancellationToken;
protected List<Task> downloadingTasks = new List<Task>();
protected readonly int retry = 5;
protected readonly string nullMark = "<null>";
/// <summary>
/// 初始化
/// </summary>
@ -21,5 +45,733 @@ namespace DownKyi.Services.Download
this.downloadedList = downloadedList;
}
protected PlayUrlDashVideo BaseDownloadAudio(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingAudio");
// 如果没有Dash，返回null
if (downloading.PlayUrl == null || downloading.PlayUrl.Dash == null) { return null; }
// 如果audio列表没有内容，则返回null
if (downloading.PlayUrl.Dash.Audio == null) { return null; }
else if (downloading.PlayUrl.Dash.Audio.Count == 0) { return null; }
// 根据音频id匹配
PlayUrlDashVideo downloadAudio = null;
foreach (PlayUrlDashVideo audio in downloading.PlayUrl.Dash.Audio)
{
if (audio.Id == downloading.AudioCodec.Id)
{
downloadAudio = audio;
break;
}
}
// 避免Dolby==null及其它未知情况，直接使用异常捕获
try
{
// Dolby Atmos
if (downloading.AudioCodec.Id == 30250)
{
downloadAudio = downloading.PlayUrl.Dash.Dolby.Audio[0];
}
}
catch (Exception) { }
return downloadAudio;
}
protected PlayUrlDashVideo BaseDownloadVideo(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingVideo");
// 如果没有Dash，返回null
if (downloading.PlayUrl == null || downloading.PlayUrl.Dash == null) { return null; }
// 如果Video列表没有内容，则返回null
if (downloading.PlayUrl.Dash.Video == null) { return null; }
else if (downloading.PlayUrl.Dash.Video.Count == 0) { return null; }
// 根据视频编码匹配
PlayUrlDashVideo downloadVideo = null;
foreach (PlayUrlDashVideo video in downloading.PlayUrl.Dash.Video)
{
if (video.Id == downloading.Resolution.Id && Utils.GetVideoCodecName(video.Codecs) == downloading.VideoCodecName)
{
downloadVideo = video;
break;
}
}
return downloadVideo;
}
protected string BaseDownloadCover(DownloadingItem downloading, string coverUrl, string fileName)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingCover");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
// 查询、保存封面
StorageCover storageCover = new StorageCover();
string cover = storageCover.GetCover(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid, coverUrl);
if (cover == null)
{
return null;
}
// 复制图片到指定位置
try
{
File.Copy(cover, fileName, true);
// 记录本次下载的文件
if (!downloading.Downloading.DownloadFiles.ContainsKey(coverUrl))
{
downloading.Downloading.DownloadFiles.Add(coverUrl, fileName);
}
return fileName;
}
catch (Exception e)
{
Core.Utils.Debugging.Console.PrintLine(e);
LogManager.Error(Tag, e);
}
return null;
}
protected string BaseDownloadDanmaku(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingDanmaku");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
string title = $"{downloading.Name}";
string assFile = $"{downloading.DownloadBase.FilePath}.ass";
// 记录本次下载的文件
if (!downloading.Downloading.DownloadFiles.ContainsKey("danmaku"))
{
downloading.Downloading.DownloadFiles.Add("danmaku", assFile);
}
int screenWidth = SettingsManager.GetInstance().GetDanmakuScreenWidth();
int screenHeight = SettingsManager.GetInstance().GetDanmakuScreenHeight();
//if (SettingsManager.GetInstance().IsCustomDanmakuResolution() != AllowStatus.YES)
//{
// if (downloadingEntity.Width > 0 && downloadingEntity.Height > 0)
// {
// screenWidth = downloadingEntity.Width;
// screenHeight = downloadingEntity.Height;
// }
//}
// 字幕配置
Config subtitleConfig = new Config
{
Title = title,
ScreenWidth = screenWidth,
ScreenHeight = screenHeight,
FontName = SettingsManager.GetInstance().GetDanmakuFontName(),
BaseFontSize = SettingsManager.GetInstance().GetDanmakuFontSize(),
LineCount = SettingsManager.GetInstance().GetDanmakuLineCount(),
LayoutAlgorithm = SettingsManager.GetInstance().GetDanmakuLayoutAlgorithm().ToString("G").ToLower(), // async/sync
TuneDuration = 0,
DropOffset = 0,
BottomMargin = 0,
CustomOffset = 0
};
Core.Danmaku2Ass.Bilibili.GetInstance()
.SetTopFilter(SettingsManager.GetInstance().GetDanmakuTopFilter() == AllowStatus.YES)
.SetBottomFilter(SettingsManager.GetInstance().GetDanmakuBottomFilter() == AllowStatus.YES)
.SetScrollFilter(SettingsManager.GetInstance().GetDanmakuScrollFilter() == AllowStatus.YES)
.Create(downloading.DownloadBase.Avid, downloading.DownloadBase.Cid, subtitleConfig, assFile);
return assFile;
}
protected List<string> BaseDownloadSubtitle(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("WhileDownloading");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingSubtitle");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
List<string> srtFiles = new List<string>();
var subRipTexts = VideoStream.GetSubtitle(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid);
if (subRipTexts == null)
{
return null;
}
foreach (var subRip in subRipTexts)
{
string srtFile = $"{downloading.DownloadBase.FilePath}_{subRip.LanDoc}.srt";
try
{
File.WriteAllText(srtFile, subRip.SrtString);
// 记录本次下载的文件
if (!downloading.Downloading.DownloadFiles.ContainsKey("subtitle"))
{
downloading.Downloading.DownloadFiles.Add("subtitle", srtFile);
}
srtFiles.Add(srtFile);
}
catch (Exception e)
{
Core.Utils.Debugging.Console.PrintLine($"{Tag}.DownloadSubtitle()发生异常: {0}", e);
LogManager.Error($"{Tag}.DownloadSubtitle()", e);
}
}
return srtFiles;
}
protected string BaseMixedFlow(DownloadingItem downloading, string audioUid, string videoUid)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("MixedFlow");
downloading.DownloadContent = DictionaryResource.GetString("DownloadingVideo");
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
//if (videoUid == nullMark)
//{
// return null;
//}
string finalFile = $"{downloading.DownloadBase.FilePath}.mp4";
if (videoUid == null)
{
finalFile = $"{downloading.DownloadBase.FilePath}.aac";
}
// 合并音视频
FFmpegHelper.MergeVideo(audioUid, videoUid, finalFile);
// 获取文件大小
if (File.Exists(finalFile))
{
FileInfo info = new FileInfo(finalFile);
downloading.FileSize = Format.FormatFileSize(info.Length);
}
else
{
downloading.FileSize = Format.FormatFileSize(0);
}
return finalFile;
}
protected void BaseParse(DownloadingItem downloading)
{
// 更新状态显示
downloading.DownloadStatusTitle = DictionaryResource.GetString("Parsing");
downloading.DownloadContent = string.Empty;
// 下载大小
downloading.DownloadingFileSize = string.Empty;
// 下载速度
downloading.SpeedDisplay = string.Empty;
if (downloading.PlayUrl != null && downloading.Downloading.DownloadStatus == DownloadStatus.NOT_STARTED)
{
// 设置下载状态
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOADING;
return;
}
// 设置下载状态
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOADING;
// 解析
switch (downloading.Downloading.PlayStreamType)
{
case PlayStreamType.VIDEO:
downloading.PlayUrl = VideoStream.GetVideoPlayUrl(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid);
break;
case PlayStreamType.BANGUMI:
downloading.PlayUrl = VideoStream.GetBangumiPlayUrl(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid);
break;
case PlayStreamType.CHEESE:
downloading.PlayUrl = VideoStream.GetCheesePlayUrl(downloading.DownloadBase.Avid, downloading.DownloadBase.Bvid, downloading.DownloadBase.Cid, downloading.DownloadBase.EpisodeId);
break;
default:
break;
}
}
/// <summary>
/// 执行任务
/// </summary>
protected async Task DoWork()
{
// 上次循环时正在下载的数量
int lastDownloadingCount = 0;
while (true)
{
int maxDownloading = SettingsManager.GetInstance().GetAriaMaxConcurrentDownloads();
int downloadingCount = 0;
try
{
downloadingTasks.RemoveAll((m) => m.IsCompleted);
foreach (DownloadingItem downloading in downloadingList)
{
if (downloading.Downloading.DownloadStatus == DownloadStatus.DOWNLOADING)
{
downloadingCount++;
}
}
foreach (DownloadingItem downloading in downloadingList)
{
if (downloadingCount >= maxDownloading)
{
break;
}
// 开始下载
if (downloading.Downloading.DownloadStatus == DownloadStatus.NOT_STARTED || downloading.Downloading.DownloadStatus == DownloadStatus.WAIT_FOR_DOWNLOAD)
{
//这里需要立刻设置状态，否则如果SingleDownload没有及时执行，会重复创建任务
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOADING;
downloadingTasks.Add(SingleDownload(downloading));
downloadingCount++;
}
}
}
catch (InvalidOperationException e)
{
Core.Utils.Debugging.Console.PrintLine("Start DoWork()发生InvalidOperationException异常: {0}", e);
LogManager.Error("Start DoWork() InvalidOperationException", e);
}
catch (Exception e)
{
Core.Utils.Debugging.Console.PrintLine("Start DoWork()发生异常: {0}", e);
LogManager.Error("Start DoWork()", e);
}
// 判断是否该结束线程，若为true，跳出while循环
if (cancellationToken.IsCancellationRequested)
{
Core.Utils.Debugging.Console.PrintLine("AriaDownloadService: 下载服务结束，跳出while循环");
LogManager.Debug(Tag, "下载服务结束");
break;
}
// 判断下载列表中的视频是否全部下载完成
if (lastDownloadingCount > 0 && downloadingList.Count == 0 && downloadedList.Count > 0)
{
AfterDownload();
}
lastDownloadingCount = downloadingList.Count;
// 降低CPU占用
await Task.Delay(500);
}
await Task.WhenAny(Task.WhenAll(downloadingTasks), Task.Delay(30000));
foreach (Task tsk in downloadingTasks.FindAll((m) => !m.IsCompleted))
{
Core.Utils.Debugging.Console.PrintLine("AriaDownloadService: 任务结束超时");
LogManager.Debug(Tag, "任务结束超时");
}
}
/// <summary>
/// 下载一个视频
/// </summary>
/// <param name="downloading"></param>
/// <returns></returns>
private async Task SingleDownload(DownloadingItem downloading)
{
// 路径
downloading.DownloadBase.FilePath = downloading.DownloadBase.FilePath.Replace("\\", "/");
string[] temp = downloading.DownloadBase.FilePath.Split('/');
//string path = downloading.DownloadBase.FilePath.Replace(temp[temp.Length - 1], "");
string path = downloading.DownloadBase.FilePath.TrimEnd(temp[temp.Length - 1].ToCharArray());
// 路径不存在则创建
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
try
{
await Task.Run(new Action(() =>
{
// 初始化
downloading.DownloadStatusTitle = string.Empty;
downloading.DownloadContent = string.Empty;
//downloading.Downloading.DownloadFiles.Clear();
// 解析并依次下载音频、视频、弹幕、字幕、封面等内容
Parse(downloading);
// 暂停
Pause(downloading);
string audioUid = null;
// 如果需要下载音频
if (downloading.DownloadBase.NeedDownloadContent["downloadAudio"])
{
//audioUid = DownloadAudio(downloading);
for (int i = 0; i < retry; i++)
{
audioUid = DownloadAudio(downloading);
if (audioUid != null && audioUid != nullMark)
{
break;
}
}
}
if (audioUid == nullMark)
{
DownloadFailed(downloading);
return;
}
// 暂停
Pause(downloading);
string videoUid = null;
// 如果需要下载视频
if (downloading.DownloadBase.NeedDownloadContent["downloadVideo"])
{
//videoUid = DownloadVideo(downloading);
for (int i = 0; i < retry; i++)
{
videoUid = DownloadVideo(downloading);
if (videoUid != null && videoUid != nullMark)
{
break;
}
}
}
if (videoUid == nullMark)
{
DownloadFailed(downloading);
return;
}
// 暂停
Pause(downloading);
string outputDanmaku = null;
// 如果需要下载弹幕
if (downloading.DownloadBase.NeedDownloadContent["downloadDanmaku"])
{
outputDanmaku = DownloadDanmaku(downloading);
}
// 暂停
Pause(downloading);
List<string> outputSubtitles = null;
// 如果需要下载字幕
if (downloading.DownloadBase.NeedDownloadContent["downloadSubtitle"])
{
outputSubtitles = DownloadSubtitle(downloading);
}
// 暂停
Pause(downloading);
string outputCover = null;
string outputPageCover = null;
// 如果需要下载封面
if (downloading.DownloadBase.NeedDownloadContent["downloadCover"])
{
string fileName = $"{downloading.DownloadBase.FilePath}.{GetImageExtension(downloading.DownloadBase.PageCoverUrl)}";
// page的封面
outputPageCover = DownloadCover(downloading, downloading.DownloadBase.PageCoverUrl, fileName);
// 封面
outputCover = DownloadCover(downloading, downloading.DownloadBase.CoverUrl, $"{path}/Cover.{GetImageExtension(downloading.DownloadBase.CoverUrl)}");
}
// 暂停
Pause(downloading);
// 混流
string outputMedia = string.Empty;
if (downloading.DownloadBase.NeedDownloadContent["downloadAudio"] || downloading.DownloadBase.NeedDownloadContent["downloadVideo"])
{
outputMedia = MixedFlow(downloading, audioUid, videoUid);
}
// 这里本来只有IsExist，没有pause，不知道怎么处理
// 是否存在
//isExist = IsExist(downloading);
//if (!isExist.Result)
//{
// return;
//}
// 检测音频、视频是否下载成功
bool isMediaSuccess = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadAudio"] || downloading.DownloadBase.NeedDownloadContent["downloadVideo"])
{
// 只有下载音频不下载视频时才输出aac
// 只要下载视频就输出mp4
if (File.Exists(outputMedia))
{
// 成功
isMediaSuccess = true;
}
else
{
isMediaSuccess = false;
}
}
// 检测弹幕是否下载成功
bool isDanmakuSuccess = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadDanmaku"])
{
if (File.Exists(outputDanmaku))
{
// 成功
isDanmakuSuccess = true;
}
else
{
isDanmakuSuccess = false;
}
}
// 检测字幕是否下载成功
bool isSubtitleSuccess = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadSubtitle"])
{
if (outputSubtitles == null)
{
// 为null时表示不存在字幕
}
else
{
foreach (string subtitle in outputSubtitles)
{
if (!File.Exists(subtitle))
{
// 如果有一个不存在则失败
isSubtitleSuccess = false;
}
}
}
}
// 检测封面是否下载成功
bool isCover = true;
if (downloading.DownloadBase.NeedDownloadContent["downloadCover"])
{
if (File.Exists(outputCover) || File.Exists(outputPageCover))
{
// 成功
isCover = true;
}
else
{
isCover = false;
}
}
if (!isMediaSuccess || !isDanmakuSuccess || !isSubtitleSuccess || !isCover)
{
DownloadFailed(downloading);
return;
}
// 下载完成后处理
Downloaded downloaded = new Downloaded
{
MaxSpeedDisplay = Format.FormatSpeed(downloading.Downloading.MaxSpeed),
};
// 设置完成时间
downloaded.SetFinishedTimestamp(new DateTimeOffset(DateTime.UtcNow).ToUnixTimeSeconds());
DownloadedItem downloadedItem = new DownloadedItem
{
DownloadBase = downloading.DownloadBase,
Downloaded = downloaded
};
App.PropertyChangeAsync(new Action(() =>
{
// 加入到下载完成list中，并从下载中list去除
downloadedList.Add(downloadedItem);
downloadingList.Remove(downloading);
// 下载完成列表排序
DownloadFinishedSort finishedSort = SettingsManager.GetInstance().GetDownloadFinishedSort();
App.SortDownloadedList(finishedSort);
}));
}));
}
catch (OperationCanceledException)
{
}
}
/// <summary>
/// 下载失败后的处理
/// </summary>
/// <param name="downloading"></param>
protected void DownloadFailed(DownloadingItem downloading)
{
downloading.DownloadStatusTitle = DictionaryResource.GetString("DownloadFailed");
downloading.DownloadContent = string.Empty;
downloading.DownloadingFileSize = string.Empty;
downloading.SpeedDisplay = string.Empty;
downloading.Downloading.DownloadStatus = DownloadStatus.DOWNLOAD_FAILED;
downloading.StartOrPause = ButtonIcon.Instance().Retry;
downloading.StartOrPause.Fill = DictionaryResource.GetColor("ColorPrimary");
}
/// <summary>
/// 获取图片的扩展名
/// </summary>
/// <param name="coverUrl"></param>
/// <returns></returns>
protected string GetImageExtension(string coverUrl)
{
if (coverUrl == null)
{
return string.Empty;
}
// 图片的扩展名
string[] temp = coverUrl.Split('.');
string fileExtension = temp[temp.Length - 1];
return fileExtension;
}
/// <summary>
/// 下载完成后的操作
/// </summary>
protected void AfterDownload()
{
AfterDownloadOperation operation = SettingsManager.GetInstance().GetAfterDownloadOperation();
switch (operation)
{
case AfterDownloadOperation.NONE:
// 没有操作
break;
case AfterDownloadOperation.OPEN_FOLDER:
// 打开文件夹
break;
case AfterDownloadOperation.CLOSE_APP:
// 关闭程序
App.PropertyChangeAsync(() =>
{
System.Windows.Application.Current.Shutdown();
});
break;
case AfterDownloadOperation.CLOSE_SYSTEM:
// 关机
System.Diagnostics.Process.Start("shutdown.exe", "-s");
break;
default:
break;
}
}
/// <summary>
/// 停止基本下载服务(转换await和Task.Wait两种调用形式)
/// </summary>
protected async Task BaseEndTask()
{
// 结束任务
tokenSource.Cancel();
await workTask;
//先简单等待一下
// 下载数据存储服务
DownloadStorageService downloadStorageService = new DownloadStorageService();
// 保存数据
foreach (DownloadingItem item in downloadingList)
{
switch (item.Downloading.DownloadStatus)
{
case DownloadStatus.NOT_STARTED:
break;
case DownloadStatus.WAIT_FOR_DOWNLOAD:
break;
case DownloadStatus.PAUSE_STARTED:
break;
case DownloadStatus.PAUSE:
break;
case DownloadStatus.DOWNLOADING:
// TODO 添加设置让用户选择重启后是否自动开始下载
item.Downloading.DownloadStatus = DownloadStatus.WAIT_FOR_DOWNLOAD;
//item.Downloading.DownloadStatus = DownloadStatus.PAUSE;
break;
case DownloadStatus.DOWNLOAD_SUCCEED:
case DownloadStatus.DOWNLOAD_FAILED:
break;
default:
break;
}
item.Progress = 0;
downloadStorageService.UpdateDownloading(item);
}
foreach (DownloadedItem item in downloadedList)
{
downloadStorageService.UpdateDownloaded(item);
}
}
/// <summary>
/// 启动基本下载服务
/// </summary>
protected void BaseStart()
{
tokenSource = new CancellationTokenSource();
cancellationToken = tokenSource.Token;
workTask = Task.Run(DoWork);
}
#region 抽象接口函数
public abstract void Parse(DownloadingItem downloading);
public abstract string DownloadAudio(DownloadingItem downloading);
public abstract string DownloadVideo(DownloadingItem downloading);
public abstract string DownloadDanmaku(DownloadingItem downloading);
public abstract List<string> DownloadSubtitle(DownloadingItem downloading);
public abstract string DownloadCover(DownloadingItem downloading, string coverUrl, string fileName);
public abstract string MixedFlow(DownloadingItem downloading, string audioUid, string videoUid);
protected abstract void Pause(DownloadingItem downloading);
#endregion
}
}