File: encode.h

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/*
 *  TwoLAME: an optimized MPEG Audio Layer Two encoder
 *
 *  Copyright (C) 2001-2004 Michael Cheng
 *  Copyright (C) 2004-2006 The TwoLAME Project
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  $Id: encode.h 156 2007-03-20 23:57:35Z nhumfrey $
 *
 */


#ifndef	_ENCODE_H_
#define	_ENCODE_H_

int encode_init(twolame_options *glopts);

void scalefactor_calc (FLOAT sb_sample[][3][SCALE_BLOCK][SBLIMIT],
					   unsigned int scalar[][3][SBLIMIT], int nch,
					   int sblimit);

void combine_lr (FLOAT sb_sample[2][3][SCALE_BLOCK][SBLIMIT],
				 FLOAT joint_sample[3][SCALE_BLOCK][SBLIMIT], int sblimit);

void find_sf_max (twolame_options *glopts,
			unsigned int sf_index[2][3][SBLIMIT],
			FLOAT sf_max[2][SBLIMIT]);

void sf_transmission_pattern (twolame_options *glopts,
			unsigned int sf_index[2][3][SBLIMIT],
			unsigned int sf_selectinfo[2][SBLIMIT]);

void write_header (twolame_options *glopts, bit_stream * bs);

void write_bit_alloc (twolame_options *glopts, 
			unsigned int bit_alloc[2][SBLIMIT],
			bit_stream * bs);

void write_scalefactors (twolame_options *glopts, 
			unsigned int bit_alloc[2][SBLIMIT],
			unsigned int sf_selectinfo[2][SBLIMIT],
			unsigned int scalar[2][3][SBLIMIT],
			bit_stream * bs);

void subband_quantization (twolame_options *glopts,
			unsigned int sf_index[2][3][SBLIMIT],
			FLOAT sb_samples[2][3][SCALE_BLOCK][SBLIMIT],
			unsigned int j_scale[3][SBLIMIT],
			FLOAT j_samps[3][SCALE_BLOCK][SBLIMIT],
			unsigned int bit_alloc[2][SBLIMIT],
			unsigned int sbband[2][3][SCALE_BLOCK][SBLIMIT]);

void write_samples (twolame_options *glopts,
			unsigned int sbband[2][3][SCALE_BLOCK][SBLIMIT],
			unsigned int bit_alloc[2][SBLIMIT], bit_stream * bs);


/*******************************************************
   Bit Allocation Stuff 
******************************************************/

int bits_for_nonoise (twolame_options * glopts, FLOAT SMR[2][SBLIMIT],
			unsigned int scfsi[2][SBLIMIT], FLOAT min_mnr,
			unsigned int bit_alloc[2][SBLIMIT]);

int init_bit_allocation( twolame_options * glopts );

void main_bit_allocation (twolame_options * glopts, FLOAT SMR[2][SBLIMIT],
			unsigned int scfsi[2][SBLIMIT],
			unsigned int bit_alloc[2][SBLIMIT], int *adb );

int vbr_bit_allocation (twolame_options * glopts, FLOAT SMR[2][SBLIMIT],
			unsigned int scfsi[2][SBLIMIT],
			unsigned int bit_alloc[2][SBLIMIT], int *adb);

int a_bit_allocation (twolame_options * glopts, FLOAT SMR[2][SBLIMIT],
			unsigned int scfsi[2][SBLIMIT],
			unsigned int bit_alloc[2][SBLIMIT], int *adb );

#endif


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