Method SeekToFrameAbsolute

Source/Modules/nimRecorder/PlayerNode.cpp:330–493

}

XnStatus PlayerNode::SeekToFrameAbsolute(XnUInt32 nNodeID, XnUInt32 nDestFrame)
{
	XN_ASSERT((nNodeID != INVALID_NODE_ID) && (nNodeID < m_nMaxNodes));
	PlayerNodeInfo* pPlayerNodeInfo = &m_pNodeInfoMap[nNodeID];
	XN_ASSERT((nDestFrame > 0) && (nDestFrame <= pPlayerNodeInfo->nFrames));
	XN_VALIDATE_INPUT_PTR(m_pNodeNotifications);

	XnStatus nRetVal = XN_STATUS_OK;

	if (nDestFrame == pPlayerNodeInfo->nCurFrame)
	{
		//Just go back to position of current frame
		nRetVal = SeekStream(XN_OS_SEEK_SET, pPlayerNodeInfo->nLastDataPos);
		XN_IS_STATUS_OK(nRetVal);
		// and re-read it
		nRetVal = ReadNext();
		XN_IS_STATUS_OK(nRetVal);

		return XN_STATUS_OK;
	}

	// not same frame. Find seek locations of each stream
	DataIndexEntry** pDataIndex = GetSeekLocationsFromDataIndex(nNodeID, nDestFrame);
	if (pDataIndex != NULL)
	{
		XnUInt64 nLastPos = 0;

		// move each node to its relevant data
		for (XnUInt32 i = 0; i < m_nMaxNodes; i++)
		{
			if (m_aSeekTempArray[i] != NULL)
			{
				// read data
				nRetVal = SeekStream(XN_OS_SEEK_SET, m_aSeekTempArray[i]->nSeekPos);
				XN_IS_STATUS_OK(nRetVal);
				nRetVal = ReadNext();
				XN_IS_STATUS_OK(nRetVal);

				// check for latest position. This will be directly after the frame we seeked to.
				XnUInt64 nPos = TellStream();
				if (nPos > nLastPos)
				{
					nLastPos = nPos;
				}
			}
		}

		// now seek to directly after last position
		SeekStream(XN_OS_SEEK_SET, nLastPos);
	}
	else
	{
		// perform old seek (no data indexes)
		XnUInt64 nStartPos = TellStream();
		XnUInt32 nNextFrame = pPlayerNodeInfo->nCurFrame + 1;
		XnStatus nRetVal = XN_STATUS_OK;

		if (nDestFrame < nNextFrame)