/*

* 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:

*

*/

/**************************************************************************

  dec_huftables.cpp - Huffman tables for AAC decoder.

  Author(s): Juha Ojanpera

  Copyright (c) 2000-2004 by Nokia Research Center, Speech and Audio Systems.

  *************************************************************************/

/*-- Project Headers. --*/

#include "dec_huf.h"

#include "defines.h"

#include "dec_const.h"

/**************************************************************************

   Internal Objects

  *************************************************************************/

/*

   Purpose:      Number of Huffman items within each codebook.

   Explanation:  - */

/*

 * Deletes resources allocated to the Huffman codebooks.

 */

void

CloseHuffmanDecTables(Huffman_DecInfo **huf)

{

  if(huf)

  {

    int16 i;

    for(i = 0; i < MAX_AAC_QHUFTABLES; i++)

    {

      if(huf[i] != 0)

        delete huf[i];

      huf[i] = NULL;

    }

    delete[] huf;

    huf = NULL;

  }

}

/**************************************************************************

  Title:      LoadHuffmanDecTablesL

  Purpose:    Loads Huffman spectral codebooks for AAC decoder.

  Usage:      y = LoadHuffmanDecTablesL()

  Output:     y - spectral codebooks

  Author(s):  Juha Ojanpera

  *************************************************************************/

Huffman_DecInfo **

LoadHuffmanDecTablesL(void)

{

    /*

  Purpose:      Array holding the AAC Huffman decoding codebooks.

  Explanation:  - */

const Huffman_DecCode *dec_huffman_tables[] = {

  dec_hftable1, dec_hftable2, dec_hftable3, dec_hftable4, dec_hftable5, 

  dec_hftable6, dec_hftable7, dec_hftable8, dec_hftable9, dec_hftable10, 

  dec_hftable11

};

  int16 i;

  Huffman_DecInfo **huf;

  const Huffman_DecCode **hf_code;

  huf = (Huffman_DecInfo **) new (ELeave) Huffman_DecInfo*[MAX_AAC_QHUFTABLES];

  CleanupStack::PushL(huf);

  ZERO_MEMORY(huf, MAX_AAC_QHUFTABLES * sizeof(Huffman_DecInfo *));

  hf_code = dec_huffman_tables;

  for(i = 0; i < MAX_AAC_QHUFTABLES; i++)

  {

    huf[i] = (Huffman_DecInfo *) new (ELeave) Huffman_DecInfo[1];

    CleanupStack::PushL(huf[i]);

    ZERO_MEMORY(huf[i], sizeof(Huffman_DecInfo));

    huf[i]->huf = hf_code[i];

    huf[i]->cb_len = cb_len[i];

  }

  CleanupStack::Pop(MAX_AAC_QHUFTABLES + 1);

  return (huf);

}

/*

 * Deletes resources allocated to the Huffman scalefactor codebook.

 */

void

CloseSfHuffmanTable(Huffman_DecSfInfo *sfHuf)

{

  if(sfHuf)

  {

    delete sfHuf;

    sfHuf = NULL;

  }

}

/**************************************************************************

  Title:      LoadSfHuffmanTableL

  Purpose:    Loads Huffman scalefactor codebook for AAC decoder.

  Usage:      y = LoadSfHuffmanTableL()

  Output:     y - scalefactor codebook

  Author(s):  Juha Ojanpera

  *************************************************************************/

Huffman_DecSfInfo *

LoadSfHuffmanTableL(void)

{

  Huffman_DecSfInfo *huf;

  huf = (Huffman_DecSfInfo *) new (ELeave) Huffman_DecSfInfo[1];

  ZERO_MEMORY(huf, sizeof(Huffman_DecSfInfo));

  huf->cb_len = cb_len[11];

  huf->sf_param = dec_hftable12;

  return (huf);

}