--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/mp3aacManipLib/AACGain/src/coupling.cpp	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,147 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - Initial contribution
+*
+* Contributors:
+* Ixonos Plc
+*
+* Description:
+*
+*/
+
+
+/**************************************************************************
+  coupling.cpp - Coupling channel implementations (parsing only!).
+ 
+  Author(s): Juha Ojanpera
+  Copyright (c) 2000-2004 by Nokia Research Center, Speech and Audio Systems.
+  *************************************************************************/
+
+/*-- System Headers. --*/
+#include <math.h>
+
+/*-- Project Headers. --*/
+#include "tool2.h"
+#include "defines.h"
+
+int16
+GetCCE(CAACAudDec *aac, TBitStream *bs, CMC_Info *mip, CCInfo **ccInfo)
+{
+  TCh_Info cip;
+  CToolInfo *tool;
+  CWindowInfo *ccWin;
+  int16 i, j, tag, cidx, ch, nele, nch;
+  int16 shared[2 * ((LEN_NCC << 3) + 1)], global_gain;
+
+  ZERO_MEMORY(&cip, sizeof(TCh_Info));
+
+  /*-- Get (dummy) channel index for this coupling channel. --*/
+  cidx = mip->dummyCCh;
+
+  tool = ccInfo[cidx]->tool;
+  ccWin = ccInfo[cidx]->winInfo;
+
+  tag = (int16) BsGetBits(bs, LEN_TAG);
+  mip->cc_ind[cidx] = (int16) BsGetBits(bs, LEN_IND_SW_CCE);
+
+  /*-- Coupled (target) elements. --*/
+  ZERO_MEMORY(shared, sizeof(shared));
+  nele = (int16) BsGetBits(bs, LEN_NCC);
+  for(i = 0, nch = 0; i < nele + 1; i++)
+  {
+    int16 cpe;
+    
+    cpe = (int16) BsGetBits(bs, LEN_IS_CPE);
+    tag = (int16) BsGetBits(bs, LEN_TAG);
+    ch = CCChIndex(mip, cpe, tag);
+
+    if(!cpe)
+      shared[nch++] = 0;
+    else
+    {
+      int16 cc_l = (int16) BsGetBits(bs, LEN_CC_LR);
+      int16 cc_r = (int16) BsGetBits(bs, LEN_CC_LR);
+      j = (int16) ((cc_l << 1) | cc_r);
+
+      switch(j)
+      {
+        /*-- Shared gain list. --*/
+        case 0:
+          shared[nch] = 1;
+          shared[nch + 1] = 1;
+          nch += 2;
+          break;
+ 
+        /*-- Left channel gain list. --*/
+        case 1:
+          shared[nch] = 0;
+          nch += 1;
+          break;
+
+        /*-- Right channel gain list. --*/
+        case 2:
+          shared[nch] = 0;
+          nch += 1;
+          break;
+
+        /*-- Two gain lists. --*/
+        case 3:
+          shared[nch] = 0;
+          shared[nch + 1] = 0;
+          nch += 2;
+          break;
+      
+        default:
+          shared[nch] = 0;
+          shared[nch + 1] = 0;
+          break;
+      }
+    }
+  }
+  
+  int16 cc_dom = (int16) BsGetBits(bs, LEN_CC_DOM);
+  int16 cc_gain_ele_sign = (int16) BsGetBits(bs, LEN_CC_SGN);
+  int16 scl_idx = (int16) BsGetBits(bs, LEN_CCH_GES);
+
+  /*-- Global gain. --*/
+  global_gain = (int16) BsGetBits(bs, LEN_SCL_PCM);
+
+  /*-- Side information. --*/
+  if(!GetICSInfo(bs, ccWin, tool->ltp, NULL))
+    return (-1);
+  
+  cip.info = mip->sfbInfo->winmap[ccWin->wnd];
+  
+  /*-- Channel parameters. --*/
+  if (cip.sf_huf == 0) return (-1);
+  if(!GetICS(bs, &cip, ccWin->group, ccWin->max_sfb, ccWin->cb_map, 
+             tool->quant, global_gain, ccWin->sfac))
+    return (-1);
+  
+  /*-- Coupling for first target channel(s) is already at correct scale. --*/
+  ch = shared[0] ? (int16) 2 : (int16) 1;
+
+  /*-- Bitstreams for target channel scale factors. --*/
+  for( ; ch < nch; ch++)
+  {
+    /*-- If needed, get common gain elment present. --*/
+    int16 cgep = (mip->cc_ind[cidx]) ? (int16) 1 : (int16) BsGetBits(bs, LEN_CCH_CGP);
+
+    if(cgep) 
+      int16 fac = (int16) (GetHcb(aac->sf_huf, bs) - MIDFAC);
+    
+    /*-- Must be dependently switched CCE. --*/
+    else
+      if(!huf_sfac(bs, &cip, ccWin->group, ccWin->cb_map, 0, ccWin->sfac, ccWin->max_sfb))
+        return (-1);
+  }
+
+  return (TRUE);
+}