public void AddDownVideo(VideoInfo videoInfo)
{
if (videoInfo.downloadUrl != null && videoInfo.downloadUrl.Count == 0)
{
App.ShowToast(videoInfo.name + " 没有可用下载链接");
return;
}
DownVideoInfoViewMoel video = new DownVideoInfoViewMoel();
video.Name = videoInfo.name;
video.Image = videoInfo.image;
video.Time = videoInfo.time;
video.VideoId = videoInfo.videoId;
video.VideoIndex = videoInfo.videoIndex;
video.Desc = videoInfo.desc;
video.IsLoading = false;
video.IsLoaded = false;
int downIndex = 0;
for (int i = 0; i < videoInfo.downloadUrl.Count; i++)
{
if (videoInfo.downloadUrl[i].name == App.DownVideoModel.CurrentDefinitionName)
{
downIndex = i;
break;
}
}
video.DownUrl = videoInfo.downloadUrl[downIndex].url;
DowningVideo.Add(video);
DowningVideoids.Add(video.VideoId);
SaveVideoData();
BeginDownVideos();
}
private void GetVideoData(IAsyncResult result)
{
#if DEBUG
long memory = DeviceStatus.ApplicationCurrentMemoryUsage / (1024 * 1024);
long memoryLimit = DeviceStatus.ApplicationMemoryUsageLimit / (1024 * 1024);
long memoryMax = DeviceStatus.ApplicationPeakMemoryUsage / (1024 * 1024);
System.Diagnostics.Debug.WriteLine("当前内存使用情况：" + memory.ToString() + " MB 当前最大内存使用情况： " + memoryMax.ToString() + "MB 当前可分配最大内存： " + memoryLimit.ToString() + " MB");
#endif
try
{
WebResponse response = ((HttpWebRequest)result.AsyncState).EndGetResponse(result);
Stream stream = response.GetResponseStream();
long totalValue = response.ContentLength;
//以第一次记录的size为文件大小
if (currentDownVideo.TotalSize == 0)
{
currentDownVideo.TotalSize = totalValue;
}
else
{
totalValue = currentDownVideo.TotalSize;
}
byte[] data = new byte[32 * 1024];
//stream.Position = (long)currentDownVideo.Loadedsize;
int read = 0;
while ((read = stream.Read(data, 0, data.Length)) > 0)
{
if (CommonData.NetworkStatus != "WiFi")
{
StopGetVideoData();
break;
}
//if (streamToWriteTo.Length != 0 && totalValue > streamToWriteTo.Length)
if (streamToWriteTo.Length != 0)
{
if (CallbackManager.currentPage != null)
{
CallbackManager.currentPage.Dispatcher.BeginInvoke(() =>
{
try
{
if (streamToWriteTo.CanWrite)
{
currentDownVideo.LoadProgress = (double)streamToWriteTo.Length * 100 / (double)totalValue;
currentDownVideo.Size = Convert.ToDouble((double)((totalValue) / (double)((double)1024 * (double)1024))).ToString("0.0") + "MB";
currentDownVideo.Loadsize = Convert.ToDouble((double)((streamToWriteTo.Length) / (double)((double)1024 * (double)1024))).ToString("0.0") + "MB";
currentDownVideo.Loadedsize = streamToWriteTo.Length;
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("currentDownVideo异常：" + ex.Message);
}
});
}
}
streamToWriteTo.Write(data, 0, read);
}
//判断是否已经下载完成
if (totalValue <= streamToWriteTo.Length)
{
CallbackManager.currentPage.Dispatcher.BeginInvoke(() =>
{
#if DEBUG
memory = DeviceStatus.ApplicationCurrentMemoryUsage / (1024 * 1024);
memoryLimit = DeviceStatus.ApplicationMemoryUsageLimit / (1024 * 1024);
memoryMax = DeviceStatus.ApplicationPeakMemoryUsage / (1024 * 1024);
System.Diagnostics.Debug.WriteLine("当前内存使用情况：" + memory.ToString() + " MB 当前最大内存使用情况： " + memoryMax.ToString() + "MB 当前可分配最大内存： " + memoryLimit.ToString() + " MB");
#endif
currentDownVideo.IsLoading = false;
currentDownVideo.IsLoaded = true;
currentDownVideo.LocalDownloadUrl = CommonData.videoSavePath + currentDownVideo.VideoId.ToString() + ".mp4";
DownedVideo.Add(currentDownVideo);
DownedVideoids.Add(currentDownVideo.VideoId);
DowningVideo.RemoveAt(0);
DowningVideoids.Remove(currentDownVideo.VideoId);
SaveVideoData();
if (App.MainViewModel.NeedDownedTip)
{
App.ShowToast(currentDownVideo.name + " 下载完成");
}
//进行下一个下载
isDownding = false;
BeginDownVideos();
});
Debug.WriteLine("下载完成");
}
else
{
CallbackManager.currentPage.Dispatcher.BeginInvoke(() =>
{
currentDownVideo.IsLoadError = true;
currentDownVideo.IsLoading = false;
isDownding = false;
//重新下载
BeginDownVideos();
});
}
streamToWriteTo.Close();
}
catch (System.Net.ProtocolViolationException e)
{
System.Diagnostics.Debug.WriteLine(e.Message);
}
catch (Exception e)
{
CallbackManager.currentPage.Dispatcher.BeginInvoke(() =>
{
System.Diagnostics.Debug.WriteLine(e.Message);
streamToWriteTo.Close();
currentDownVideo.IsLoadError = true;
currentDownVideo.IsLoading = false;
isDownding = false;
//重新下载
BeginDownVideos();
});
}
}
