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/*
* @(#) subband_layer_1.h 1.7, last edit: 25 Oct 1994 16:19:35
* @(#) Copyright (C) 1993, 1994 Tobias Bading (bading@cs.tu-berlin.de)
* @(#) Berlin University of Technology
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef SUBBAND_LAYER_1_H
#define SUBBAND_LAYER_1_H
#include "all.h"
#include "subband.h"
#include "crc.h"
// class for layer I subbands in single channel mode:
class SubbandLayer1 : public Subband
{
protected:
uint32 subbandnumber;
uint32 samplenumber;
uint32 allocation;
real scalefactor;
uint32 samplelength;
real sample;
real factor, offset;
public:
SubbandLayer1 (uint32 subbandnumber);
void read_allocation (Ibitstream *, Header *, Crc16 *);
void read_scalefactor (Ibitstream *, Header *);
boil read_sampledata (Ibitstream *);
boil put_next_sample (e_channels, SynthesisFilter *, SynthesisFilter *);
};
// class for layer I subbands in joint stereo mode:
class SubbandLayer1IntensityStereo : public SubbandLayer1
{
protected:
real channel2_scalefactor;
public:
SubbandLayer1IntensityStereo (uint32 subbandnumber);
void read_allocation (Ibitstream *stream, Header *header, Crc16 *crc)
{
SubbandLayer1::read_allocation (stream, header, crc);
}
void read_scalefactor (Ibitstream *, Header *);
boil read_sampledata (Ibitstream *stream)
{
return SubbandLayer1::read_sampledata (stream);
}
boil put_next_sample (e_channels, SynthesisFilter *, SynthesisFilter *);
};
// class for layer I subbands in stereo mode:
class SubbandLayer1Stereo : public SubbandLayer1
{
protected:
uint32 channel2_allocation;
real channel2_scalefactor;
uint32 channel2_samplelength;
real channel2_sample;
real channel2_factor, channel2_offset;
public:
SubbandLayer1Stereo (uint32 subbandnumber);
void read_allocation (Ibitstream *, Header *, Crc16 *);
void read_scalefactor (Ibitstream *, Header *);
boil read_sampledata (Ibitstream *);
boil put_next_sample (e_channels, SynthesisFilter *, SynthesisFilter *);
};
#endif
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