Initial community commit

Src/vlb/adif.cpp

@@ -0,0 +1,88 @@
+/* $Header: /cvs/root/winamp/vlb/adif.cpp,v 1.1 2009/04/28 20:21:07 audiodsp Exp $ */
+
+/***************************************************************************\ 
+ *
+ *           Copyright 2000-2002 Dolby Laboratories, Inc.  All Rights 
+ *                Reserved.  Do not copy.  Do not distribute.  
+ *                     Confidential information.
+ *
+ *           (C) copyright Fraunhofer - IIS (1998)
+ *                All Rights Reserved
+ *
+ *   filename: adif.cpp
+ *   project : MPEG-2 AAC Decoder
+ *   contents/description: audio data interchange format header
+ *
+\***************************************************************************/
+
+#include "adif.h"
+
+// CAUTION: some elements read more than 16bits,
+// this is not supported by CDolbyBitStream::Get().
+
+CAdifHeader::CAdifHeader ()
+ : m_CopyrightIdPresent (1),
+   m_OriginalCopy (1),
+   m_Home (1),
+   m_BitstreamType (1),
+   m_NumProgramConfigElements (4)
+{
+  m_BitRate = 0 ;
+}
+
+CAdifHeader::~CAdifHeader ()
+{
+}
+
+#include<stdio.h>
+void CAdifHeader::Read (CDolbyBitStream &bs)
+{
+  char A[4];
+  A[0]=(char)(bs.Get (8));
+  A[1]=(char)(bs.Get (8));
+  A[2]=(char)(bs.Get (8));
+  A[3]=(char)(bs.Get (8));
+  if (A[0]!= 'A') throw ENoAdifHeader () ;
+  if (A[1]!= 'D') throw ENoAdifHeader () ;
+  if (A[2]!= 'I') throw ENoAdifHeader () ;
+  if (A[3]!= 'F') throw ENoAdifHeader () ;
+
+  if (m_CopyrightIdPresent.Read (bs))
+  {
+    for (int i = 0 ; i < 9 ; i++)
+    {
+      bs.Get (8) ; // CopyrightId
+    }
+  }
+
+  m_OriginalCopy.Read (bs) ;
+  m_Home.Read (bs) ;
+  m_BitstreamType.Read (bs) ;
+
+  m_BitRate = bs.Get (16) ;
+  m_BitRate <<= 7 ;
+  m_BitRate |= bs.Get (7) ;
+
+  //
+
+  m_NumProgramConfigElements.Read (bs) ;
+
+  for (int i = 0 ; i <= m_NumProgramConfigElements ; i++)
+  {
+    if (m_BitstreamType == 0)
+    {
+      // we don't care much about adif_buffer_fullness
+
+      bs.Get (16) ;
+      bs.Get (4) ;
+    }
+
+    m_ProgramConfigElement[i].Read (bs);
+  }
+}
+
+CProgramConfig &CAdifHeader::GetProgramConfig (int index)
+{
+  return m_ProgramConfigElement [index] ;
+}
+