public FlvParse(Stream stream)
{
Head = new FlvHead(stream);
if (Head.Signature != "FLV")
{
throw new Exception("格式错误:" + Head.Signature);
}
while (true)
{
var PreviousTagSize = stream.ReadUInt32();
FlvTag flvTag = FlvTag.createTag(stream);
if (flvTag == null)
{
break;
}
var data = flvTag.LoadTagData(stream);
VideoTag v = flvTag as VideoTag;
if (v != null)
{
Videos.Add(v);
}
AudioTag a = flvTag as AudioTag;
if (a != null)
{
Audios.Add(a);
}
ScriptDataTag d = flvTag as ScriptDataTag;
if (d != null)
{
MediaData = d;
}
tags.Add(flvTag);
}
}
static async void play(string src, MediaElement media)
{
var c = new HttpClient();
var req = new HttpRequestMessage(HttpMethod.Get, new Uri(src));
var res = await c.SendRequestAsync(req, HttpCompletionOption.ResponseHeadersRead);
var url = req.RequestUri.ToString();
var sr = await res.Content.ReadAsInputStreamAsync();
var buf = await sr.ReadBuffer(11);
FlvHead head = new FlvHead(buf.AsStream());
if (head.Signature == "FLV")
{
Debug.WriteLine("FLV ## " + url);
media.SetMediaStreamSource(new FlvReader(() => new HttpStream(url)).CreateSource());
return;
}
if (url.IndexOf("mp4") != -1)
{
Debug.WriteLine("MP4 ## " + url);
media.Source = new Uri(url);
return;
}
new MessageDialog("不支持数据的格式").ShowAsync().GetResults();
Debug.WriteLine("ERRRRRRRERRRRRRRERRRRRRRERRRRRRRERRRRRRRERRRRRRR");
}
public FlvReader(Func <Stream> s)
{
this.CreateStream = s;
Stream stream = this.CreateStream(); // new HttpStream(url);
var Head = new FlvHead(stream); //9
if (Head.Signature != "FLV")
{
throw new Exception("格式错误:" + Head.Signature);
}
while (FirstAudio == null || FirstVideo == null || MediaData == null)
{
this.readPreviousTag(stream);
}
//加载keyframes
Task.Run(() => {
double nxf = 0;
double off = MediaData.Duration / 250;
var obj = MediaData["keyframes"]?.GetObject();
if (obj != null)
{
times = obj["times"].GetArray().Select((d) => d.GetNumber()).ToList();
kfs = obj["filepositions"].GetArray().Select((d) => (long)d.GetNumber()).ToList();
Debug.WriteLine("@@@ keyframes：ALL");
Debug.WriteLine("@@@ keyframes：ALL");
}
else
{
Debug.WriteLine("@@@ keyframes：LOADSTART");
while (true)
{
var PreviousTagSize = stream.ReadUInt32();
FlvTag flvTag = FlvTag.createTag(stream);
if (flvTag == null)
{
break;
}
var data = flvTag.LoadTagData(stream);
//关键帧
VideoTag tag = flvTag as VideoTag;
if (tag != null)
{
if (flvTag.TimeSpan.TotalSeconds >= nxf)
{
nxf += off;
times.Add(flvTag.TimeSpan.TotalSeconds);
kfs.Add(flvTag.Offset); //PreviousTagSize:4
}
}
}
Debug.WriteLine("@@@ keyframes：LOAdEND");
}
});
}
