/// <summary>
/// Calback function for new frame
/// </summary>
/// <param name="videoFrame"></param>
/// <param name="audioPacket"></param>
public void VideoInputFrameArrived(IDeckLinkVideoInputFrame videoFrame, IDeckLinkAudioInputPacket audioPacket)
{
// The conditions under which either of these cases occur are unclear but an overstreched processor doesn't help
if (videoFrame == null || audioPacket == null)
{
return;
}
IDeckLinkTimecode timecode;
videoFrame.GetTimecode(config.TimecodeFormat, out timecode);
if (audioPacket.GetSampleFrameCount() != config.SamplesPerSlot * config.SlotsPerFrame)
{
throw new ApplicationException("Wrong buffer size");
}
IntPtr buffer;
audioPacket.GetBytes(out buffer);
var audioFingerprints = GetAudioFingerprints(buffer, config);
var timecodeBcd = timecode?.GetBCD() ?? 0;
FingerprintCreated?.Invoke(this, new FingerprintEventArgs(timecodeBcd, (byte)config.SlotsPerFrame, 0, audioFingerprints));
// The documentation suggests that neither of these are necessary
// BM's own code does the former
// Including these doesn't make anything go bang so, in for a penny...
Marshal.ReleaseComObject(videoFrame);
Marshal.ReleaseComObject(audioPacket);
}
