protected void OnCompleted(ProgressionArgs progressionArgs)
{
if (Completed != null)
{
Completed(this, progressionArgs);
}
}
protected void OnProgression(ProgressionArgs progressionArgs)
{
if (Progression != null)
{
Progression(this, progressionArgs);
}
}
private static void FillVideoSize(ProgressionArgs progression, Dictionary <string, string> thumbInfo)
{
var size = thumbInfo["size_high"];
if (progression.Mode == Mode.Low)
{
size = thumbInfo["size_low"];
}
progression.VideoSize = long.Parse(size);
}
private void Save(Stream stream, string filePath, ProgressionArgs videoInfo)
{
long buffSize = Math.Min(videoInfo.VideoSize, 1024 * 1024);
byte[] buff = new byte[buffSize];
var readSize = stream.Read(buff, 0, 3);
if (buff[0] == 'F' && buff[1] == 'L' && buff[2] == 'V')
{
filePath += ".flv";
}
else
{
filePath += ".mp4";
}
var tempFilePath = Path.GetTempFileName();
long totalReadSize = readSize;
FileStreamArgs fileStreamArgs = new FileStreamArgs();
using (var outStream = File.OpenWrite(tempFilePath))
{
fileStreamArgs.FileStream = outStream;
outStream.Write(buff, 0, 3);
while (readSize != 0)
{
readSize = stream.Read(buff, 0, buff.Length);
outStream.Write(buff, 0, readSize);
totalReadSize += readSize;
videoInfo.DownloadedSize = totalReadSize;
OnProgression(videoInfo);
OnStreamWrite(fileStreamArgs);
if (!outStream.CanWrite)
{
return;
}
}
}
if (File.Exists(filePath))
{
File.Delete(filePath);
}
File.Move(tempFilePath, filePath);
}
public bool Recode(string url, string path, bool allowedLowMode)
{
var thumbInfo = GetThumbInfo(url);
var videoInfo = GetFlv(url);
var progression = new ProgressionArgs()
{
Title = thumbInfo["title"]
};
progression.Mode = GetMode(videoInfo["url"]);
if (!videoInfo.ContainsKey("url") || (progression.Mode == Mode.Low && !allowedLowMode))
{
return(false);
}
RequestPage(url);
var req = (HttpWebRequest)WebRequest.Create(videoInfo["url"]);
req.CookieContainer = _cookie;
FillVideoSize(progression, thumbInfo);
using (var stream = req.GetResponse().GetResponseStream())
{
var fileName = thumbInfo["title"];
Array.ForEach(Path.GetInvalidFileNameChars(), c => fileName = fileName.Replace(c.ToString(), ""));
Path.GetInvalidFileNameChars().ForEach(c => fileName = fileName.Replace(c.ToString(), ""));
var filePath = Path.Combine(path, fileName);
OnFilePathDecide(ref filePath);
Save(stream, filePath, progression);
}
return(true);
}
