/// <summary>
/// 启动摄像头预览
/// </summary>
/// <param name="cameraNo">摄像头编号</param>
/// <returns></returns>
public SmcErr StartReceiveVideo(string cameraNo)
{
NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
logEx.Trace("Enter: IvsVideoMonitor.StartReceiveVideo({0}).", cameraNo);
SmcErr err = new CgwError();
int handle;
logEx.Trace("Call ivsSdkClient.StartRealPlayCBRaw({0}).", cameraNo);
int result = this.ivsSdkClient.StartRealPlayCBRaw(cameraNo, out handle);
//如果不为0，表示预览失败
if (result != CgwConst.IVS_SDK_SUCCESS_TAG)
{
err.SetErrorNo(CgwError.START_RECEIVE_VIDEO_FAILED);
logEx.Error("Start Receive camera video data failed.Camera No:{0}.Ivs sdk error code:{1}", cameraNo, result);
return(err);
}
else
{
logEx.Info("Start Receive camera video data success.Camera No:{0},Handle:{1}.", cameraNo, handle);
}
//预览成功，需要停止原来的预览，并将预览句柄添加到缓存
//需要停止的预览句柄
int needToStopHandel = CgwConst.START_RECEIVE_VIDEO_DATA_FAILED;
if (this.handelOperateLock.TryEnterWriteLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
//如果预览句柄已经存在，删除掉原来的句柄,用新的句柄替换
if (this.cameraVideoHandeDic.ContainsKey(cameraNo))
{
needToStopHandel = this.cameraVideoHandeDic[cameraNo];
this.videoHandleCameraDic.Remove(needToStopHandel);
this.cameraVideoHandeDic.Remove(cameraNo);
}
this.cameraVideoHandeDic.Add(cameraNo, handle);
MediaDataSender mediaDataSender = new MediaDataSender(cameraNo, this.dataCallBack);
this.videoHandleCameraDic.Add(handle, mediaDataSender);
}
finally
{
this.handelOperateLock.ExitWriteLock();
}
}
//重新预览后，更新了预览句柄，需要将原来的预览停止，放在handelOperateLock外面，防止长时间占用锁
if (needToStopHandel != CgwConst.START_RECEIVE_VIDEO_DATA_FAILED)
{
result = this.ivsSdkClient.StopRealPlay(needToStopHandel);
//如果不为0，表示停止原来的预览失败，只记录日志，不返回错误，不设置错误码
if (result != CgwConst.IVS_SDK_SUCCESS_TAG)
{
logEx.Error("Get a new preview success. But stop old preview failed.CameraNo:{0},Ivs sdk error code:{0}", cameraNo, result);
return(err);
}
}
return(err);
}
/// <summary>
/// 启动摄像头预览
/// </summary>
/// <param name="cameraNo">摄像头编号</param>
/// <returns></returns>
public SmcErr StartReceiveVideo(string cameraNo)
{
NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
logEx.Trace("Enter: T28181VideoMonitor.StartReceiveVideo({0}).", cameraNo);
SmcErr err = new CgwError();
//打开通道，开始接收实况RTP数据流
UInt32 channel = sipStack.StartRecvStream(cameraNo, domain, sipPort);
//如果为0，表示预览失败
if (channel == CgwConst.T28181_ERROR_HANDLE)
{
err.SetErrorNo(CgwError.START_RECEIVE_VIDEO_FAILED);
logEx.Error("Start Receive camera video data failed.Camera No:{0}.Handle:{1}.", cameraNo, channel);
return(err);
}
else
{
logEx.Info("Start Receive camera video data success.Camera No:{0},Handle:{1}.", cameraNo, channel);
}
//设置rtp解析回调函数
rtpAdapter.ESDK_RTP_OpenChannel(frameDataCallBack, channel);
//预览成功，需要停止原来的预览，并将预览句柄添加到缓存
//需要停止的预览句柄
UInt32 needToStopChannel = CgwConst.T28181_ERROR_HANDLE;
if (this.handelOperateLock.TryEnterWriteLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
//如果预览句柄已经存在，删除掉原来的句柄,用新的句柄替换
if (this.cameraVideoChannelDic.ContainsKey(cameraNo))
{
needToStopChannel = this.cameraVideoChannelDic[cameraNo];
this.videoChannelDataSenderDic.Remove(needToStopChannel);
this.cameraVideoChannelDic.Remove(cameraNo);
//关闭rtp回调
rtpAdapter.ESDK_RTP_CloseChannel(needToStopChannel);
}
this.cameraVideoChannelDic.Add(cameraNo, channel);
MediaDataSender mediaDataSender = new MediaDataSender(cameraNo, this.dataCallBack);
this.videoChannelDataSenderDic.Add(channel, mediaDataSender);
}
finally
{
this.handelOperateLock.ExitWriteLock();
}
}
//重新预览后，更新了预览句柄，需要将原来的预览停止，放在handelOperateLock外面，防止长时间占用锁
if (needToStopChannel != CgwConst.T28181_ERROR_HANDLE)
{
int result = sipStack.StopRecvStream(needToStopChannel);
//如果不为0，表示停止原来的预览失败，只记录日志，不返回错误，不设置错误码
if (result != CgwConst.IVS_SDK_SUCCESS_TAG)
{
err.SetErrorNo(CgwError.START_RECEIVE_VIDEO_FAILED);
logEx.Error("Get a new preview success. But stop old preview failed.CameraNo:{0},Ivs sdk error code:{0}", cameraNo, result);
return(err);
}
}
return(err);
}
/// <summary>
/// 码流回调函数,
/// 1、根据预览句柄handle从videoHandleCameraDic中获取摄像头编号，
/// 2、根据摄像头编号，获取mic状态
/// 3、判断码流是否是音频，如果是音频，根据mic状态判断是否需要转发
/// </summary>
/// <param name="handle">播放句柄</param>
/// <param name="pRawFrameInfo">实况参数</param>
/// <param name="pBuf">码流</param>
/// <param name="uiBufSize">大小</param>
/// <param name="cameraNo">摄像头编号</param>
private void IvsRealPlayCallBackRaw(int handle, IvsRawFrameInfo pRawFrameInfo, byte[] pBuf, UInt32 uiBufSize, string pUserData)
{
NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
//logEx.Trace("Enter:IvsRealPlayCallBackRaw(),{0}", pUserData);
MediaDataSender mediaDataSender = null;
try
{
if (this.handelOperateLock.TryEnterReadLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
if (!this.videoHandleCameraDic.ContainsKey(handle))
{
logEx.Error("The video data handle is not found.Handle:{0}", handle);
return;
}
mediaDataSender = this.videoHandleCameraDic[handle];
}
finally
{
this.handelOperateLock.ExitReadLock();
}
}
if (mediaDataSender == null)
{
return;
}
StreamType streamType = StreamType.VIDEO_H264;
//判断码流类型，因为码流回调访问频频非常高，不单独抽成一个方法，减少方法访问开销
//对于支持的码流类型，用break退出switch，对于不支持的码流类型直接舍弃，用return返回
switch (pRawFrameInfo.StreamType)
{
//对于音频只接收G711A和G711U，其他舍弃
case (int)IvsStreamType.PAY_LOAD_TYPE_PCMU:
streamType = StreamType.AUDIO_G711U;
break;
case (int)IvsStreamType.PAY_LOAD_TYPE_PCMA:
streamType = StreamType.AUDIO_G711A;
break;
//只接收H264的视频码流
case (int)IvsStreamType.PAY_LOAD_TYPE_H264:
//H264的标准视频流，作为视频流处理
streamType = StreamType.VIDEO_H264;
break;
default:
//不支持的类型,直接舍弃，返回
//logEx.Warn("This stream type is not support. Chuck the data.StreamType:{0};Camera no:{1}",
// Enum.GetName(typeof(IvsStreamType), pRawFrameInfo.StreamType),
// cameraNo);
return;
}
if (streamType == StreamType.AUDIO_G711A || streamType == StreamType.AUDIO_G711U)
{
//如果是音频流，需要判断mic的状态，开启时才发送音频流
if (this.micOperateLock.TryEnterReadLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
if (this.cameraMicStatusDic.ContainsKey(mediaDataSender.CameraNo))
{
//如果mic为非开启状态，则不发送音频码流,
if (!this.cameraMicStatusDic[mediaDataSender.CameraNo])
{
//logEx.Warn("This data is audio,but the mic is off.Chuck the data.Camera no:{0}", mediaDataSender.CameraNo);
return;
}
}
else
{
//默认为关闭状态，因此如果cameraMicStatusDic不包含该摄像头，则认为处于关闭状态，舍弃音频码流
//logEx.Warn("This data is audio,but the mic is off.Chuck the data.Camera no:{0}", mediaDataSender.CameraNo);
return;
}
}
finally
{
this.micOperateLock.ExitReadLock();
}
}
}
MediaData mediaData = new MediaData();
mediaData.Data = pBuf;
//IVS 目前为裸码流
mediaData.DataType = MediaDataType.FRAME_DATA;
mediaData.StreamType = streamType;
mediaData.Size = uiBufSize;
//将Ivs帧类型转换成各融合网关统一的帧类型
string name = Enum.GetName(typeof(IvsH264NaluType), pRawFrameInfo.FrameType);
//帧类型判断，偶现IVS返回的帧类型，在融合网关中未记录，返回值为null
if (string.IsNullOrEmpty(name))
{
logEx.Warn("IvsRealPlayCallBackRaw FrameType Is Not Defined ,FrameType:{0}", pRawFrameInfo.FrameType);
mediaData.FrameType = FrameDataType.H264_NALU_TYPE_UNDEFINED;
}
else
{
if (Enum.IsDefined(typeof(FrameDataType), name))
{
FrameDataType frameDataType = (FrameDataType)Enum.Parse(typeof(FrameDataType), name);
mediaData.FrameType = frameDataType;
}
else
{
mediaData.FrameType = FrameDataType.H264_NALU_TYPE_UNDEFINED;
}
}
//向回调函数转发码流
//this.videoDataCallBack(cameraNo, mediaData, this.sender);
//logEx.Debug("FrameDataCallBackFun.mediaData.DataType={0},FrameType = {1},StreamType = {2},Size = {3}", Enum.GetName(typeof(MediaDataType), mediaData.DataType),
// Enum.GetName(typeof(FrameDataType), mediaData.FrameType), Enum.GetName(typeof(StreamType), mediaData.StreamType), mediaData.Size);
mediaDataSender.SendData(mediaData, this.sender);
}
catch (Exception e)
{
logEx.Error("Send the media data failed.Execption message:{0}", e.ToString());
}
}
/// <summary>
/// rtp码流回调处理
/// </summary>
/// <param name="pBuf">帧数据字节数组</param>
/// <param name="pFrameData">帧数据类型</param>
/// <param name="uiChannel">通道</param>
/// <param name="uiBufSize">帧数据字节数组长度</param>
private void FrameDataCallBackFun(IntPtr pBuf, uint uiBufSize, ref ST_FRAME_DATA pFrameData, uint uiChannel)
{
NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
ST_FRAME_DATA frameData = pFrameData;
MediaDataSender mediaDataSender = null;
if (this.handelOperateLock.TryEnterReadLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
if (this.videoChannelDataSenderDic.ContainsKey(uiChannel))
{
mediaDataSender = this.videoChannelDataSenderDic[uiChannel];
}
}
finally
{
this.handelOperateLock.ExitReadLock();
}
}
if (mediaDataSender == null)
{
logEx.Warn("FrameDataCallBackFun mediaDataSender = NULL");
return;
}
StreamType streamType = StreamType.VIDEO_H264;
//对于支持的码流类型，用break退出switch，对于不支持的码流类型直接舍弃，用return返回
switch (frameData.iStreamType)
{
//对于音频只接收G711A和G711U，其他舍弃
case (int)IvsStreamType.PAY_LOAD_TYPE_PCMU:
streamType = StreamType.AUDIO_G711U;
break;
case (int)IvsStreamType.PAY_LOAD_TYPE_PCMA:
streamType = StreamType.AUDIO_G711A;
break;
//只接收H264的视频码流
case (int)IvsStreamType.PAY_LOAD_TYPE_H264:
//H264的标准视频流，作为视频流处理
streamType = StreamType.VIDEO_H264;
break;
default:
//不支持的类型,直接舍弃，返回
return;
}
if (streamType == StreamType.AUDIO_G711A || streamType == StreamType.AUDIO_G711U)
{
//如果是音频流，需要判断mic的状态，开启时才发送音频流
if (this.micOperateLock.TryEnterReadLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
if (this.cameraMicStatusDic.ContainsKey(mediaDataSender.CameraNo))
{
//如果mic为非开启状态，则不发送音频码流,
if (!this.cameraMicStatusDic[mediaDataSender.CameraNo])
{
logEx.Warn("This data is audio,but the mic is off.Chuck the data.Camera no:{0}", mediaDataSender.CameraNo);
return;
}
}
else
{
//默认为关闭状态，因此如果cameraMicStatusDic不包含该摄像头，则认为处于关闭状态，舍弃音频码流
logEx.Warn("This data is audio,but the mic is off.Chuck the data.Camera no:{0}", mediaDataSender.CameraNo);
return;
}
}
finally
{
this.micOperateLock.ExitReadLock();
}
}
}
try
{
MediaData mediaData = new MediaData();
//获取非托管的数据
byte[] datagram = new byte[uiBufSize];
if (!(streamType == StreamType.AUDIO_G711A || streamType == StreamType.AUDIO_G711U))
{
Marshal.Copy(pBuf, datagram, 0, (int)uiBufSize);
//视频帧数据头部增加四个四节的开始表实0x000001
byte[] newDatagram = new byte[uiBufSize + 4];
datagram.CopyTo(newDatagram, 4);
newDatagram[3] = 1;
mediaData.Data = newDatagram;
mediaData.Size = (uint)(uiBufSize + 4);
}
else
{
mediaData.Data = datagram;
mediaData.Size = (uiBufSize);
}
//裸码流
mediaData.DataType = MediaDataType.FRAME_DATA;
mediaData.StreamType = streamType;
//将帧类型转换成各融合网关统一的帧类型
string name = Enum.GetName(typeof(IvsH264NaluType), frameData.iFrameDataType);
if (Enum.IsDefined(typeof(FrameDataType), name))
{
FrameDataType frameDataType = (FrameDataType)Enum.Parse(typeof(FrameDataType), name);
mediaData.FrameType = frameDataType;
}
else
{
mediaData.FrameType = FrameDataType.H264_NALU_TYPE_UNDEFINED;
}
//向回调函数转发码流
mediaDataSender.SendData(mediaData, this.sender);
}
catch (System.Exception ex)
{
logEx.Error("FrameDataCallBackFun failed.Execption message:{0}", ex.Message);
}
}
