/// <summary>
/// 播放列表xml 转换成对象
/// </summary>
/// <param name="xmlPlayList">xml结构的播放列表</param>
/// <returns></returns>
private static AMS_PlayList Parse(XmlDocument xmlPlayList)
{
AMS_PlayList plm = new AMS_PlayList();
XmlDocument xmlDoc = xmlPlayList;
try
{
//查找根节点
XmlNode node = xmlDoc.SelectSingleNode("//Root");
plm.Number = node.Attributes["Num"].Value; //列表编号
plm.EffectDate = DateTime.Parse(node.Attributes["EffectDate"].Value); //生效日期
//plm.PlayElapsed = int.Parse(node.Attributes["PlayElapsed"].Value);
plm.EndDate = DateTime.Parse(node.Attributes["EndDate"].Value);
XmlNodeList nodes = xmlDoc.SelectNodes("//Root/VideoItems/Video");
//遍历找到的视频项
foreach (XmlNode n in nodes)
{
AMS_VideoItem item = new AMS_VideoItem();
item.Name = n.Attributes["name"].Value;
item.PlayTime = n.Attributes["playtime"].Value;
item.ReRelativeUrl = n.Attributes["source"].Value;
item.MD5Value = n.Attributes["md5value"].Value;
if (plm.PlayFileList.Count > 0)
{
plm.PlayFileList[plm.PlayFileList.Count - 1].SunTime = int.Parse((DateTime.Parse(item.PlayTime) - DateTime.Parse(plm.PlayFileList[plm.PlayFileList.Count - 1].PlayTime)).TotalSeconds.ToString().Split('.')[0]);
}
plm.PlayFileList.Add(item);
//不重复的视频文件名称
int i;
for (i = 0; i < plm.MediaFiles.Count; i++)
{
if (plm.MediaFiles[i].Name == item.Name)
{
break;
}
}
if (i >= plm.MediaFiles.Count)
{
AMS_VideoItem Fileitem = new AMS_VideoItem();
Fileitem.Name = item.Name;
Fileitem.ReRelativeUrl = item.ReRelativeUrl;
Fileitem.MD5Value = item.MD5Value;
plm.MediaFiles.Add(Fileitem);
}
}
plm.PlayFileList[plm.PlayFileList.Count - 1].SunTime = int.Parse(node.Attributes["PlayElapsed"].Value);
plm.PlayListTimeLength = int.Parse((DateTime.Parse(plm.PlayFileList[plm.PlayFileList.Count - 1].PlayTime) - DateTime.Parse(plm.PlayFileList[0].PlayTime)).TotalSeconds.ToString().Split('.')[0]) + plm.PlayFileList[plm.PlayFileList.Count - 1].SunTime;
}
catch (Exception ex)
{
throw ex;
}
return(plm);
}
/// <summary>
/// 播放列表xml 转换成对象
/// </summary>
/// <param name="xmlPlayList">xml结构的播放列表</param>
/// <returns></returns>
public static AMS_PlayList Parse(string xmlPlayList)
{
AMS_PlayList plm = new AMS_PlayList();
XmlDocument xmlDoc = new XmlDocument();
try
{
//载入字符串类型的XML
xmlDoc.LoadXml(xmlPlayList);
plm = Parse(xmlDoc);
}
catch (Exception ex)
{
throw ex;
}
return(plm);
}
/// <summary>
/// 结构转换成XML
/// </summary>
/// <param name="playlist">播放列表</param>
/// <returns></returns>
public static string ToXml(AMS_PlayList playlist)
{
//TODO:转换成xml结构的算法
//创建一个xml对象
XmlDocument xmlDoc = new XmlDocument();
//创建开头
XmlDeclaration dec = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null);
xmlDoc.AppendChild(dec);
//创建根节点
XmlElement root = xmlDoc.CreateElement("Root");
root.SetAttribute("Num", playlist.Number);
root.SetAttribute("EffectDate", playlist.EffectDate.Value.ToShortDateString());
root.SetAttribute("EndDate", playlist.EndDate.Value.ToShortDateString());
root.SetAttribute("PlayElapsed", playlist.PlayFileList[playlist.PlayFileList.Count - 1].SunTime.ToString());
//创建二级节点
XmlElement SecNode = xmlDoc.CreateElement("VideoItems");
root.AppendChild(SecNode);
//遍历媒体文件并添加到节点中
foreach (AMS_VideoItem video in playlist.PlayFileList)
{
XmlElement ThirdNode = xmlDoc.CreateElement("Video");
ThirdNode.SetAttribute("name", video.Name);
ThirdNode.SetAttribute("playtime", video.PlayTime);
ThirdNode.SetAttribute("source", video.ReRelativeUrl);
ThirdNode.SetAttribute("md5value", video.MD5Value);
SecNode.AppendChild(ThirdNode);
//不重复的视频文件名称
}
//在根节点中添加二级节点
root.AppendChild(SecNode);
//添加根节点
xmlDoc.AppendChild(root);
return(xmlDoc.OuterXml);
}