/// <summary>
/// Stop the encoding process
/// </summary>
public void Stop()
{
if (cam != null)
{
cam.Pause();
}
if (mic != null)
{
mic.Pause();
}
EncoderRunning = false;
if (coreloops != null)
{
foreach (var loop in coreloops)
{
loop.Join(); // wait for the encoder to get the message and actually stop. Easier than screwing it's state data.
}
}
try { cam.Dispose(); } catch { }
try { mic.Dispose(); } catch { }
foreach (var pkg in Packages)
{
try {
EncoderBridge.CloseEncoderJob(ref pkg.Job);
} catch { }
}
if (outputRouter != null)
{
outputRouter.Close();
}
}
/// <summary>
/// This loop does the actual work of reading caches into the encoder and firing actions.
/// This loop controls Multiple-bit-rate encoding
/// </summary>
private void EncoderCoreLoop(object Package)
{
EncoderPackage pkg = Package as EncoderPackage;
try {
#region Start up
if (pkg == null)
{
throw new Exception("Encoder core loop package was lost");
}
double lastVideoTime = 0.0; // used for Adaptive frame rate
if (cam != null)
{
lastVideoTime = cam.TimecodeStart;
}
int loop_frame_incr = 0;
if (pkg.Specification.HasVideo)
{
loop_frame_incr = 1;
videoJobs++;
}
#endregion
while (!EncoderRunning) // wait for the signal!
{
System.Threading.Thread.Sleep(1000);
}
WaitForSyncFlag();
start = DateTime.Now;
while (EncoderRunning) // Encode frames until stopped
{
#region Frame availability checks
// Wait for buffers to be populated
while (pkg.BuffersEmpty(MinimumBufferPopulation) && EncoderRunning)
{
foreach (var buf in pkg.Buffers)
{
buf.RebufferCapturedFrames();
}
if (pkg.BuffersEmpty(MinimumBufferPopulation))
{
System.Threading.Thread.Sleep(frameSleep);
}
}
if (DryRun)
{
System.Threading.Thread.Sleep(frameSleep);
continue; // don't encode
}
#endregion
pkg.LoadAllBuffers();
EncoderBridge.EncodeFrame(ref pkg.Job, ref pkg.Frame);
pkg.UnloadAllBuffers();
if (!pkg.Job.IsValid)
{
throw new Exception("Job became invalid. Possible memory or filesystem error");
}
#region Segment switching
if (pkg.Job.SegmentNumber != pkg.Job.OldSegmentNumber)
{
double real_chunk_duration = pkg.Frame.VideoSampleTime - lastVideoTime;
lock (outputRouter) {
outputRouter.NewChunkAvailable(pkg.Job.OldSegmentNumber, pkg.JobIndex, real_chunk_duration);
}
lastVideoTime = pkg.Frame.VideoSampleTime;
pkg.Job.OldSegmentNumber = pkg.Job.SegmentNumber;
}
FrameCount += loop_frame_incr;
#endregion
}
} catch (Exception ex) {
System.Diagnostics.Debug.Fail("EncoderController.cs: Core loop fault.", ex.Message + "\r\n" + ex.StackTrace);
File.WriteAllText(config.EncoderSettings.LocalSystemOutputFolder + @"/error.txt", "Main loop: " + ex.Message + "\r\n" + ex.StackTrace);
} finally {
if (pkg != null)
{
EncoderBridge.CloseEncoderJob(ref pkg.Job); // NEVER FORGET THIS!!
}
if (EncoderRunning)
{
Halt(); // Don't use 'Stop()' in the core loop, or the system will freeze!
}
System.Threading.Thread.CurrentThread.Abort();
}
}
