/// <summary>
/// Gets instance of rstp server. if it doesnt exist, creates it.
/// </summary>
/// <returns></returns>
public static RTSPServerLoader GetInstance()
{
if (instance == null)
{
instance = new RTSPServerLoader();
UnityEngine.Debug.Log("Creating new instance of RTSPServerLoader");
}
return(instance);
}
public string CloseAndGetOutput()
{
// Terminate the subthreads.
_terminate = true;
_copyPing.Set();
_pipePing.Set();
_copyThread.Join();
_pipeThread.Join();
// Close FFmpeg subprocess.
_subprocess.StandardInput.Close();
_subprocess.WaitForExit();
var outputReader = _subprocess.StandardError;
var error = outputReader.ReadToEnd();
_subprocess.Close();
_subprocess.Dispose();
outputReader.Close();
outputReader.Dispose();
// Nullify members (just for ease of debugging).
_subprocess = null;
_copyThread = null;
_pipeThread = null;
_copyQueue = null;
_pipeQueue = _freeBuffer = null;
//Kill server
RTSPServerLoader.GetInstance().Kill();
return(error);
}
protected void PushToPipe(Texture texture, string url, int width, int height)
{
RTSPServerLoader loader = RTSPServerLoader.GetInstance();
if (!loader.CoroutineStarted)
{
StartCoroutine(loader.WaitForServerToStart());
}
// Lazy initialization
if (_session == null && loader.RTSPServerloaded)
{
Debug.Log("Creating Session: " + url);
// Give a newly created temporary render texture to the camera
// if it's set to render to a screen. Also create a blitter
// object to keep frames presented on the screen.
if (texture == null)
{
Debug.LogError("Texture is null");
}
// Start an FFmpeg session.
_session = FFmpegSession.Create(
url,
width,
height,
_frameRate, preset,
_crfValue,
_maxBitrate
);
_startTime = Time.time;
_frameCount = 0;
_frameDropCount = 0;
}
if (_session == null)
{
return;
}
var gap = Time.time - FrameTime;
var delta = 1 / _frameRate;
if (gap < 0)
{
// Update without frame data.
_session.PushFrame(null);
}
else if (gap < delta)
{
// Single-frame behind from the current time:
// Push the current frame to FFmpeg.
_session.PushFrame(texture);
_frameCount++;
}
else if (gap < delta * 2)
{
// Two-frame behind from the current time:
// Push the current frame twice to FFmpeg. Actually this is not
// an efficient way to catch up. We should think about
// implementing frame duplication in a more proper way. #fixme
_session.PushFrame(texture);
_session.PushFrame(texture);
_frameCount += 2;
}
else
{
// Show a warning message about the situation.
WarnFrameDrop();
// Push the current frame to FFmpeg.
_session.PushFrame(texture);
// Compensate the time delay.
_frameCount += Mathf.FloorToInt(gap * _frameRate);
}
}
