/// <summary>
/// 音视频消息体解析
/// </summary>
/// <param name="msgBody"></param>
/// <returns></returns>
public Video Decode(byte[] msgBody)
{
item = new Video();
try
{
int indexOffset = 0;
item.state = msgBody.ToUInt32(indexOffset += 4);
item.V_P_X_CC = msgBody[indexOffset];
item.M_PT = msgBody[indexOffset += 1];
item.num = msgBody.ToUInt16(indexOffset += 1);
item.SIM = msgBody.Copy(indexOffset + 2, 6);
item.ID = msgBody[indexOffset += 8];
item.type = msgBody[indexOffset += 1];
item.Time = msgBody.Copy(indexOffset + 2, 8);
if (BitConvert.ByteToBit(item.type).Substring(0, 4) == "0011")
{
//音频
item.length = msgBody.ToUInt16(indexOffset += 9);
item.data = msgBody.Copy(indexOffset + 2, item.length);
}
else
{
//视频
item.Last_I_F = msgBody.ToUInt16(indexOffset += 9);
item.Last_F = msgBody.ToUInt16(indexOffset += 2);
item.length = msgBody.ToUInt16(indexOffset += 2);
item.data = msgBody.Copy(indexOffset + 2, item.length);
}
return(item);
}
catch {
return(item);
}
}
/// <summary>
/// 处理原始RTP包,分离H264码流
/// </summary>
public void RData()
{
int over = -1;
bool flag = true;
byte[] temp = null;
while (IsEnd)
{
if (Tools.video.Count > 0)
{
if (flag == true)
{
Tools.video.TryDequeue(out temp);
flag = false;
}
try
{
for (int index = 0; index < temp.Length - 4; index++)
{
if (temp[index] == 0x30 && temp[index + 1] == 0x31 && temp[index + 2] == 0x63 && temp[index + 3] == 0x64)
{
over = index;
if (over > 0)
{
///取出RTP单包
byte[] temps = temp.Take(index).ToArray();
///解析RTP
Videobody = VideoInits.Decode(temps);
//视频放入H264队列
Tools.VideoQueues.Enqueue(new ValueTuple <byte[], string, string>(Videobody.data, BitConvert.ByteToBit(Videobody.M_PT).Substring(1, 7), BitConvert.ByteToBit(Videobody.type).Substring(4, 4)));
//取出剩余数据包
temp = temp.Skip(index).ToArray();
break;
}
}
}
if (over < 1)
{
///取出下一个RTP包
if (Tools.video.Count > 0)
{
byte[] temp1 = temp;
Tools.video.TryDequeue(out byte[] temp2);
///上一包的剩余数据与下一包拼接进入下一循环
temp = new byte[temp2.Length + temp1.Length];
temp1.CopyTo(temp, 0);
temp2.CopyTo(temp, temp1.Length);
}
else
{
while (IsEnd)
{
if (Tools.video.Count <= 0)
{
Thread.Sleep(10);
}
else
{
byte[] temp1 = temp;
Tools.video.TryDequeue(out byte[] temp2);
///上一包的剩余数据与下一包拼接进入下一循环
temp = new byte[temp2.Length + temp1.Length];
temp1.CopyTo(temp, 0);
temp2.CopyTo(temp, temp1.Length);
break;
}
}
}
}
over = -1;
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
else
{
Thread.Sleep(10);
}
}
}