protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
data = null;
header = null;
var measuredData = _connectionManager?.CurrentData;
if (measuredData == null)
{
return(false);
}
data = Encoding.UTF8.GetBytes(measuredData.Serialize());
if (data == null || data.Length == 0)
{
return(false);
}
header = new MetadataHeader
{
Length = (ulong)data.Length,
SequenceNumber = _sequence++,
Timestamp = measuredData.Time
};
return(true);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
header = null;
data = null;
// TODO: Implement request for fetching data from device
if (data == null || data.Length == 0)
{
return(false);
}
DateTime dt = DateTime.UtcNow; // TODO: If a timestamp is provided by device, use that instead
// TODO: Update to reflect actual data
header = new VideoHeader()
{
CodecType = VideoCodecType.JPEG,
Length = (ulong)data.Length,
SequenceNumber = _sequence++,
SyncFrame = true,
TimestampSync = dt,
TimestampFrame = dt
};
return(true);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
bool colored = true;
data = null;
header = null;
MetadataSetting md = _settingsManager.GetSetting(new MetadataSetting(Constants.BoundingBoxColor, _deviceId,
_streamId, MetadataType.BoundingBoxTypeId, ""));
if (md != null)
{
colored = md.Value == "C";
}
data = _demoConnectionManager.GetLiveFrame(Channel, colored);
if (data.Length == 0)
{
return(false);
}
DateTime dt = DateTime.UtcNow;
header = new MetadataHeader()
{
Length = (ulong)data.Length,
SequenceNumber = _sequence++,
Timestamp = dt
};
return(true);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
header = null;
data = _demoConnectionManager.GetLiveFrame(Channel, false);
if (data.Length == 0)
{
return(false);
}
DateTime dt = DateTime.UtcNow;
var codec = VideoCodecType.JPEG;
// If you wanted to support multiple codecs, the commented code below demonstrates how this could be done (and also how to get stream settings for any other purpose)
// var setting = _settingsManager.GetSetting(new StreamSetting(Constants.Codec, _deviceId, _streamId, ""));
// if (setting.Value == VideoCodecType.H264.ToString())
// {
// codec = VideoCodecType.H264;
// }
// For video codec types other than JPEG, an important thing to note here is that we always transfer the data out of the GetLiveFrame
// call in single frame chunks. That is to say, regardless of what kind of frame it might be (P-frame, I-frame, etc.) it is sent as
// one frame per message.
header = new VideoHeader()
{
CodecType = codec,
Length = (ulong)data.Length,
SequenceNumber = _sequence++,
SyncFrame = true, // For codecs other than MJPEG, this should only be true for key frames.
TimestampSync = dt, // If the video codec is e.g. H.264, this should be the time stamp of the most recent keyframe. On a keyframe, this will be the same as TimestampFrame.
TimestampFrame = dt
};
return(true);
}
public sealed override bool GetLiveFrame(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
try
{
return(GetLiveFrameInternal(timeout, out header, out data));
}
catch (Exception ex)
{
Toolbox.Log.LogError(GetType().Name,
"{0}, Channel {1}: {2}", nameof(GetLiveFrame), Channel, ex.Message + ex.StackTrace);
throw new ConnectionLostException(ex.Message + ex.StackTrace);
}
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
header = null;
data = null;
if (_currentSpeakerData != null && _currentSpeakerHeader != null)
{
header = _currentSpeakerHeader.Clone();
data = _currentSpeakerData;
_currentSpeakerData = null;
return(true);
}
return(false);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
header = null;
data = null;
byte[] frame = _demoConnectionManager.GetLiveFrame(Channel, false);
if (frame == null)
{
return(false);
}
_currentAudioHeader.Length = (ulong)frame.Length;
_currentAudioHeader.Timestamp = DateTime.UtcNow;
_currentAudioHeader.SequenceNumber++;
_currentAudioHeader.SampleCount = frame.Length / 2; // Assume 16 bits per sample
header = _currentAudioHeader.Clone();
data = frame;
return(true);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
header = null;
data = null;
byte[] frame = null;
// TODO: Implement request for fetching frame data from device
if (frame == null)
{
return(false);
}
_currentAudioHeader.Length = (ulong)frame.Length;
_currentAudioHeader.Timestamp = DateTime.UtcNow;
_currentAudioHeader.SequenceNumber++;
_currentAudioHeader.SampleCount = frame.Length / 2; // Assume 16 bits per sample
header = _currentAudioHeader.Clone();
data = frame;
return(true);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
data = null;
header = null;
// TODO: Implement request for fetching data from device
if (data.Length == 0)
{
return(false);
}
DateTime dt = DateTime.UtcNow;// TODO: If a timestamp is provided by device, use that instead
header = new MetadataHeader()
{
Length = (ulong)data.Length,
SequenceNumber = _sequence++,
Timestamp = dt
};
return(true);
}
protected override bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data)
{
header = null;
data = _connectionManager.PopFrame();
if (data == null || data.Length == 0)
{
return(false);
}
DateTime dt = DateTime.UtcNow;
header = new VideoHeader
{
CodecType = VideoCodecType.JPEG,
Length = (ulong)data.Length,
SequenceNumber = _sequence++,
SyncFrame = true,
TimestampSync = dt,
TimestampFrame = dt
};
return(true);
}
protected abstract bool GetLiveFrameInternal(TimeSpan timeout, out BaseDataHeader header, out byte[] data);
