--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/mp3aacManipLib/MP3Gain/src/l3sfb.cpp	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,171 @@
+/*
+* 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:
+*
+*/
+
+
+/**************************************************************************
+  l3sfb.cpp - Scalefactor band (sfb) implementations for layer III.
+
+  Author(s): Juha Ojanpera
+  Copyright (c) 1999-2004 by Nokia Research Center, Speech and Audio Systems.
+  *************************************************************************/
+
+/*-- Project Headers. --*/
+#include "mp3tables.h"
+#include "mpaud.h"
+#include "mpheader.h"
+
+/**************************************************************************
+  External Objects Needed
+  *************************************************************************/
+
+/**************************************************************************
+  Internal Objects
+  *************************************************************************/
+
+static const int16 *III_sfbOffsetLong(TMPEG_Header *header);
+
+static const int16 *III_sfbOffsetShort(TMPEG_Header *header);
+
+static const int16 *III_sfbWidthTblShort(int16 *sfb_offset, int16 *sfb_width);
+
+/**************************************************************************
+  Title        : III_SfbDataInit
+
+  Purpose      : Initializes the sfb parameters.
+
+  Usage        : III_SfbDataInit(sfbData, header)
+
+  Input        : sfbData - sfb parameters
+                 header  - mp3 header parameters
+
+  Author(s)    : Juha Ojanpera
+  *************************************************************************/
+
+void
+III_SfbDataInit(CIII_SfbData *sfbData, TMPEG_Header *header)
+{
+  COPY_MEMORY(sfbData->sfbOffsetLong, III_sfbOffsetLong(header),
+              (MAX_LONG_SFB_BANDS + 1) * sizeof(int16));
+
+  sfbData->sfbLong = sfbData->sfbOffsetLong;
+
+  COPY_MEMORY(sfbData->sfbOffsetShort, III_sfbOffsetShort(header),
+              (MAX_SHORT_SFB_BANDS + 1) * sizeof(int16));
+
+  sfbData->sfbShort = sfbData->sfbOffsetShort;
+
+  COPY_MEMORY(sfbData->sfbWidthShort, 
+              III_sfbWidthTblShort(sfbData->sfbShort, sfbData->sfbWidthShort),
+              (MAX_SHORT_SFB_BANDS + 1) * sizeof(int16));
+
+  sfbData->sfbWidth = sfbData->sfbWidthShort;
+
+  sfbData->bandLimit = MAX_MONO_SAMPLES;
+}
+
+/**************************************************************************
+  Title        : III_BandLimit
+
+  Purpose      : Saves the bandlimit value for Huffman decoding.
+
+  Usage        : III_BandLimit(sfbData, decim_factor)
+
+  Input        : sfbData  - sfb parameters
+                 binLimit - number of spectral bins to be decoded from each channel
+
+  Author(s)    : Juha Ojanpera
+  *************************************************************************/
+
+void
+III_BandLimit(CIII_SfbData *sfbData, uint16 binLimit)
+{
+  sfbData->bandLimit = binLimit;
+}
+
+
+/**************************************************************************
+  Title        : III_sfbOffsetLong
+
+  Purpose      : Obtains the scalefactor table for long blocks.
+
+  Usage        : y = III_sfbOffsetLong(header)
+
+  Input        : header - mp3 header parameters
+
+  Output       : y - scalefactor boundaries for long blocks
+
+  Author(s)    : Juha Ojanpera
+  *************************************************************************/
+
+const int16 *
+III_sfbOffsetLong(TMPEG_Header *header)
+{
+  int16 fidx, mp25idx = (int16) (6 * mp25version(header));
+  
+  fidx = (int16) (mp25idx + 3 * version(header) + sfreq(header));
+
+  return (&sfBandIndex[fidx].l[0]);
+}
+
+
+/**************************************************************************
+  Title        : III_sfbOffsetShort
+
+  Purpose      : Obtains the scalefactor table for short blocks.
+
+  Usage        : y = III_sfbOffsetShort(header)
+
+  Input        : header - mp3 header parameters
+
+  Output       : y - scalefactor boundaries for short blocks
+
+  Author(s)    : Juha Ojanpera
+  *************************************************************************/
+
+const int16 *
+III_sfbOffsetShort(TMPEG_Header *header)
+{
+  int16 mp25idx = (int16) (6 * mp25version(header));
+
+  return (&sfBandIndex[mp25idx + 3 * version(header) + sfreq(header)].s[0]);
+}
+
+
+/**************************************************************************
+  Title        : III_sfbWidthTblShort
+
+  Purpose      : Obtains the scalefactor width table for short blocks.
+
+  Usage        : y = III_sfbWidthTblShort(sfb_offset, sfb_width)
+
+  Input        : sfb_offset - offset table of short blocks
+                 sfb_width  - address of buffer to receive the sfb widths
+
+  Output       : y - sfb width table for short blocks
+
+  Author(s)    : Juha Ojanpera
+  *************************************************************************/
+
+const int16 *
+III_sfbWidthTblShort(int16 *sfb_offset, int16 *sfb_width)
+{
+  for(int16 i = 0; i < MAX_SHORT_SFB_BANDS; i++)
+    sfb_width[i] = (int16) (sfb_offset[i + 1] - sfb_offset[i]);
+
+  return (sfb_width);
+}