/// <summary>
/// 获取所有发送器
/// </summary>
/// <returns></returns>
public unsafe RtpSender[] GetSenders()
{
var ptrList = PeerConnection_GetSenders(this.Handler);
if (ptrList == IntPtr.Zero)
{
return(new RtpSender[0]);
}
var list = new PointerArray(ptrList);
var items = list.GetBuffer();
var ret = new List <RtpSender>();
while (*items != null)
{
IntPtr senderPtr = new IntPtr(*items);
var sender = UniqueNative <RtpSender>(senderPtr, () => new RtpSender(senderPtr));
if (sender != null)
{
ret.Add(sender);
}
++items;
}
return(ret.ToArray());
}
/// <summary>
/// 持有一个数据接收器
/// </summary>
/// <param name="handler">数据接收器指针</param>
internal protected RtpReceiver(IntPtr handler, IDispatcher dispatcher) : base(handler)
{
IntPtr track = default;
dispatcher.Invoke(() =>
{
WebrtcObject_AddRef(handler);
track = RtpReceiver_GetMediaStreamTrack(handler);
});
Dispatcher = dispatcher;
if (track == IntPtr.Zero)
{
throw new Exception("无法获取媒体轨道");
}
IntPtr proxyPtr = default;
dispatcher.Invoke(() => proxyPtr = MediaStreamTrack.MediaStreamTrack_GetKind(track));
if (proxyPtr == IntPtr.Zero)
{
throw new Exception("无法获取媒体类型");
}
var buffer = new PointerArray(proxyPtr);
unsafe
{
byte **pointer = (byte **)buffer.GetBuffer();
var kind = new string((sbyte *)*pointer);
if (kind == "video")
{
Track = new VideoTrack(track, dispatcher);
}
else if (kind == "audio")
{
Track = new AudioTrack(track, dispatcher);
}
else
{
var unkown = new UnkownMediaStreamTrack(track, dispatcher);
unkown.SetKind(kind);
Track = unkown;
}
}
NativeFirstPacketReceived = state => FirstPacketReceived?.Invoke((MediaType)state);
dispatcher.Invoke(() => RtpReceiver_SetFirstPacketReceivedObserve(handler, NativeFirstPacketReceived));
}
/// <summary>
/// 获取单个视频设备支持的所有分辨率
/// </summary>
/// <param name="index">视频设备顺序</param>
/// <returns>视频设备支持的所有分辨率</returns>
public unsafe static VideoDeviceCapabilities[] GetDeviceCapabilities(int index)
{
try
{
var ptrs = PeerConnectionFactory_GetDeviceCapabilities(index);
if (ptrs == IntPtr.Zero)
{
return(new VideoDeviceCapabilities[0]);
}
var buffer = new PointerArray(ptrs);
byte **pointer = (byte **)buffer.GetBuffer();
byte **it = pointer;
var list = new List <VideoDeviceCapabilities>();
while (*it != null)
{
int *info = (int *)*it;
++it;
int width = *info;
++info;
int height = *info;
++info;
int fps = *info;
++info;
int type = *info;
++info;
int interlaced = *info;
++info;
list.Add(new VideoDeviceCapabilities
{
Width = width,
Height = height,
Fps = fps,
VideoType = (VideoType)type,
Interlaced = interlaced > 0
});
}
return(list.ToArray());
}
catch (Exception exp)
{
return(new VideoDeviceCapabilities[0]);
}
}
/// <summary>
/// 获取所有视频设备
/// </summary>
/// <returns>所有视频设备</returns>
public unsafe static VideoDeviceInfo[] GetDeviceInfo()
{
try
{
var ptrs = PeerConnectionFactory_GetDeviceInfo();
if (ptrs == null)
{
return(new VideoDeviceInfo[0]);
}
var buffer = new PointerArray(ptrs);
byte **pointer = (byte **)buffer.GetBuffer();
byte **it = pointer;
var list = new List <VideoDeviceInfo>();
var idx = 0;
while (*it != null)
{
var name = new string((sbyte *)(*it));
++it;
var id = new string((sbyte *)(*it));
++it;
var pid = new string((sbyte *)(*it));
++it;
var en = *(int *)*it;
++it;
list.Add(new VideoDeviceInfo
{
DeviceName = name,
DeviceId = id,
ProductId = pid,
Enable = en,
Index = idx
});
++idx;
}
return(list.ToArray());
}
catch (Exception exp)
{
return(new VideoDeviceInfo[0]);
}
}
/// <summary>
/// 搜到消息
/// </summary>
/// <param name="buffer">消息数据</param>
private unsafe void OnMessage(IntPtr buffer)
{
if (buffer == IntPtr.Zero)
{
return;
}
var arr = new PointerArray(buffer);
var ptr = arr.GetBuffer();
int length = *(int *)*ptr;
++ptr;
byte *data = (byte *)*ptr;
++ptr;
int binnary = *(int *)*ptr;
++ptr;
if (binnary > 0)
{
if (Data != null)
{
byte[] dataArray = new byte[length];
Marshal.Copy(new IntPtr(data), dataArray, 0, length);
Data?.Invoke(dataArray);
}
}
else
{
if (Message != null)
{
byte[] dataArray = new byte[length];
Marshal.Copy(new IntPtr(data), dataArray, 0, length);
var msg = System.Text.Encoding.UTF8.GetString(dataArray);
Message?.Invoke(msg);
}
}
}