2003-08-30 22:30:28 +00:00
|
|
|
|
/*
|
|
|
|
|
|
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
|
2004-06-02 22:59:04 +00:00
|
|
|
|
** Copyright (C) 2002-2004 A. Kurpiers
|
2003-08-30 22:30:28 +00:00
|
|
|
|
**
|
|
|
|
|
|
** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
|
|
**
|
|
|
|
|
|
** Any non-GPL usage of this software or parts of this software is strictly
|
|
|
|
|
|
** forbidden.
|
|
|
|
|
|
**
|
|
|
|
|
|
** Commercial non-GPL licensing of this software is possible.
|
|
|
|
|
|
** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
|
|
|
|
|
|
**
|
2004-06-23 13:50:53 +00:00
|
|
|
|
** Initially modified for use with MPlayer by Arpad Gere<EFBFBD>ffy on 2003/08/30
|
2004-09-24 17:31:36 +00:00
|
|
|
|
** $Id: hcr.c,v 1.4 2004/06/23 13:50:50 diego Exp $
|
2004-06-23 13:50:53 +00:00
|
|
|
|
** detailed CVS changelog at http://www.mplayerhq.hu/cgi-bin/cvsweb.cgi/main/
|
2003-08-30 22:30:28 +00:00
|
|
|
|
**/
|
|
|
|
|
|
|
|
|
|
|
|
#include "common.h"
|
|
|
|
|
|
#include "structs.h"
|
|
|
|
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
|
#include <string.h>
|
|
|
|
|
|
|
|
|
|
|
|
#include "syntax.h"
|
|
|
|
|
|
#include "specrec.h"
|
|
|
|
|
|
#include "bits.h"
|
|
|
|
|
|
#include "pulse.h"
|
|
|
|
|
|
#include "analysis.h"
|
|
|
|
|
|
#include "bits.h"
|
2003-10-03 22:23:26 +00:00
|
|
|
|
#include "huffman.h"
|
2003-08-30 22:30:28 +00:00
|
|
|
|
|
|
|
|
|
|
/* Implements the HCR11 tool as described in ISO/IEC 14496-3/Amd.1, 8.5.3.3 */
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef ERROR_RESILIENCE
|
|
|
|
|
|
|
|
|
|
|
|
/* rewind len (max. 32) bits so that the MSB becomes LSB */
|
|
|
|
|
|
|
|
|
|
|
|
static uint32_t rewind_word( uint32_t W, uint8_t len)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint8_t i;
|
|
|
|
|
|
uint32_t tmp_W=0;
|
|
|
|
|
|
|
|
|
|
|
|
for ( i=0; i<len; i++ )
|
|
|
|
|
|
{
|
|
|
|
|
|
tmp_W<<=1;
|
|
|
|
|
|
if (W & (1<<i)) tmp_W |= 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
return tmp_W;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void rewind_lword( uint32_t *highW, uint32_t *lowW, uint8_t len)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint32_t tmp_lW=0;
|
|
|
|
|
|
|
|
|
|
|
|
if (len > 32)
|
|
|
|
|
|
{
|
|
|
|
|
|
tmp_lW = rewind_word( (*highW << (64-len)) | (*lowW >> (len-32)), 32);
|
|
|
|
|
|
*highW = rewind_word( *lowW << (64-len) , 32);
|
|
|
|
|
|
*lowW = tmp_lW;
|
|
|
|
|
|
} else {
|
|
|
|
|
|
*highW = 0;
|
|
|
|
|
|
*lowW = rewind_word( *lowW, len);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Takes a codeword as stored in r, rewinds the remaining bits and stores it back */
|
|
|
|
|
|
static void rewind_bits(bits_t * r)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint32_t hw, lw;
|
|
|
|
|
|
|
|
|
|
|
|
if (r->len == 0) return;
|
|
|
|
|
|
|
|
|
|
|
|
if (r->len >32)
|
|
|
|
|
|
{
|
|
|
|
|
|
lw = r->bufa;
|
|
|
|
|
|
hw = r->bufb & (0xFFFFFFFF >> (64 - r->len));
|
|
|
|
|
|
rewind_lword( &hw, &lw, r->len );
|
|
|
|
|
|
r->bufa = lw;
|
|
|
|
|
|
r->bufb = hw;
|
|
|
|
|
|
|
|
|
|
|
|
} else {
|
2003-10-03 22:23:26 +00:00
|
|
|
|
lw = showbits_hcr(r, r->len );
|
2003-08-30 22:30:28 +00:00
|
|
|
|
r->bufa = rewind_word( lw, r->len);
|
|
|
|
|
|
r->bufb = 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* takes codewords from a and b, concatenate them and store them in b */
|
|
|
|
|
|
static void concat_bits( bits_t * a, bits_t * b)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint32_t hwa, lwa, hwb, lwb;
|
|
|
|
|
|
|
|
|
|
|
|
if (a->len == 0) return;
|
|
|
|
|
|
|
|
|
|
|
|
if (a->len >32)
|
|
|
|
|
|
{
|
|
|
|
|
|
lwa = a->bufa;
|
|
|
|
|
|
hwa = a->bufb & (0xFFFFFFFF >> (64 - a->len));
|
|
|
|
|
|
} else {
|
2003-10-03 22:23:26 +00:00
|
|
|
|
lwa = showbits_hcr(a, a->len );
|
2003-08-30 22:30:28 +00:00
|
|
|
|
hwa = 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
if (b->len >=32) {
|
|
|
|
|
|
lwb = b->bufa;
|
|
|
|
|
|
hwb = (b->bufb & (0xFFFFFFFF >> (64 - b->len)) ) | ( lwa << (b->len - 32));
|
|
|
|
|
|
} else {
|
2003-10-03 22:23:26 +00:00
|
|
|
|
lwb = showbits_hcr(b, b->len ) | (lwa << (b->len));
|
2003-08-30 22:30:28 +00:00
|
|
|
|
hwb = (lwa >> (32 - b->len)) | (hwa << (b->len));
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
b->bufa = lwb;
|
|
|
|
|
|
b->bufb = hwb;
|
|
|
|
|
|
b->len += a->len;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 8.5.3.3.1 */
|
|
|
|
|
|
|
|
|
|
|
|
static const uint8_t PresortedCodebook_VCB11[] = { 11, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 9, 7, 5, 3, 1};
|
|
|
|
|
|
static const uint8_t PresortedCodebook[] = { 11, 9, 7, 5, 3, 1};
|
|
|
|
|
|
|
|
|
|
|
|
static const uint8_t maxCwLen[32] = {0, 11, 9, 20, 16, 13, 11, 14, 12, 17, 14, 49,
|
|
|
|
|
|
0, 0, 0, 0, 14, 17, 21, 21, 25, 25, 29, 29, 29, 29, 33, 33, 33, 37, 37, 41};
|
|
|
|
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
|
|
{
|
|
|
|
|
|
bits_t bits;
|
|
|
|
|
|
uint8_t decoded;
|
|
|
|
|
|
uint16_t sp_offset;
|
|
|
|
|
|
uint8_t cb;
|
|
|
|
|
|
} codeword_state;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#define segmentWidth( codebook ) min( maxCwLen[codebook], ics->length_of_longest_codeword )
|
|
|
|
|
|
|
2004-09-24 17:31:36 +00:00
|
|
|
|
uint8_t reordered_spectral_data(NeAACDecHandle hDecoder, ic_stream *ics, bitfile *ld,
|
2003-08-30 22:30:28 +00:00
|
|
|
|
int16_t *spectral_data)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint16_t sp_offset[8];
|
|
|
|
|
|
uint16_t g,i, presort;
|
|
|
|
|
|
uint16_t NrCodeWords=0, numberOfSegments=0, BitsRead=0;
|
|
|
|
|
|
uint8_t numberOfSets, set;
|
|
|
|
|
|
codeword_state Codewords[ 1024 ]; // FIXME max length? PCWs are not stored, so index is Codewordnr - numberOfSegments!, maybe malloc()?
|
|
|
|
|
|
bits_t Segment[ 512 ];
|
|
|
|
|
|
|
|
|
|
|
|
uint8_t PCW_decoded=0;
|
|
|
|
|
|
uint16_t nshort = hDecoder->frameLength/8;
|
|
|
|
|
|
|
|
|
|
|
|
|
2004-06-02 22:59:04 +00:00
|
|
|
|
/*memset (spectral_data, 0, hDecoder->frameLength*sizeof(uint16_t));*/
|
2003-08-30 22:30:28 +00:00
|
|
|
|
|
|
|
|
|
|
if (ics->length_of_reordered_spectral_data == 0)
|
|
|
|
|
|
return 0; /* nothing to do */
|
|
|
|
|
|
|
|
|
|
|
|
/* if we have a corrupted bitstream this can happen... */
|
|
|
|
|
|
if ((ics->length_of_longest_codeword == 0) ||
|
|
|
|
|
|
(ics->length_of_reordered_spectral_data <
|
|
|
|
|
|
ics->length_of_longest_codeword) ||
|
|
|
|
|
|
(ics->max_sfb == 0))
|
|
|
|
|
|
{
|
|
|
|
|
|
return 10; /* this is not good... */
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* store the offset into the spectral data for all the window groups because we can't do it later */
|
|
|
|
|
|
|
|
|
|
|
|
sp_offset[0] = 0;
|
|
|
|
|
|
for (g=1; g < ics->num_window_groups; g++)
|
|
|
|
|
|
{
|
|
|
|
|
|
sp_offset[g] = sp_offset[g-1] + nshort*ics->window_group_length[g-1];
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* All data is sorted according to the codebook used */
|
|
|
|
|
|
for (presort = 0; presort < (hDecoder->aacSectionDataResilienceFlag ? 22 : 6); presort++)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint8_t sfb;
|
|
|
|
|
|
|
|
|
|
|
|
/* next codebook that has to be processed according to presorting */
|
|
|
|
|
|
uint8_t nextCB = hDecoder->aacSectionDataResilienceFlag ? PresortedCodebook_VCB11[ presort ] : PresortedCodebook[ presort ];
|
|
|
|
|
|
|
|
|
|
|
|
/* Data belonging to the same spectral unit and having the same codebook comes in consecutive codewords.
|
|
|
|
|
|
This is done by scanning all sfbs for possible codewords. For sfbs with more than 4 elements this has to be
|
|
|
|
|
|
repeated */
|
|
|
|
|
|
|
|
|
|
|
|
for (sfb=0; sfb<ics->max_sfb; sfb ++)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint8_t sect_cb, w;
|
|
|
|
|
|
|
|
|
|
|
|
for (w=0; w< (ics->swb_offset[sfb+1] - ics->swb_offset[sfb]); w+=4)
|
|
|
|
|
|
{
|
|
|
|
|
|
for(g = 0; g < ics->num_window_groups; g++)
|
|
|
|
|
|
{
|
|
|
|
|
|
for (i = 0; i < ics->num_sec[g]; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
sect_cb = ics->sect_cb[g][i];
|
|
|
|
|
|
|
|
|
|
|
|
if (
|
|
|
|
|
|
/* process only sections that are due now */
|
|
|
|
|
|
(( sect_cb == nextCB ) || (( nextCB < ESC_HCB ) && ( sect_cb == nextCB+1)) ) &&
|
|
|
|
|
|
|
|
|
|
|
|
/* process only sfb's that are due now */
|
|
|
|
|
|
((ics->sect_start[g][i] <= sfb) && (ics->sect_end[g][i] > sfb))
|
|
|
|
|
|
)
|
|
|
|
|
|
{
|
|
|
|
|
|
if ((sect_cb != ZERO_HCB) &&
|
|
|
|
|
|
(sect_cb != NOISE_HCB) &&
|
|
|
|
|
|
(sect_cb != INTENSITY_HCB) &&
|
|
|
|
|
|
(sect_cb != INTENSITY_HCB2))
|
|
|
|
|
|
{
|
|
|
|
|
|
uint8_t inc = (sect_cb < FIRST_PAIR_HCB) ? QUAD_LEN : PAIR_LEN;
|
|
|
|
|
|
uint16_t k;
|
|
|
|
|
|
|
|
|
|
|
|
uint32_t hw, lw;
|
|
|
|
|
|
|
|
|
|
|
|
for (k=0; (k < (4/inc)*ics->window_group_length[g]) &&
|
|
|
|
|
|
( (k+w*ics->window_group_length[g]/inc) < (ics->sect_sfb_offset[g][sfb+1] - ics->sect_sfb_offset[g][sfb])); k++)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint16_t sp = sp_offset[g] + ics->sect_sfb_offset[g][sfb] + inc*(k+w*ics->window_group_length[g]/inc);
|
|
|
|
|
|
|
|
|
|
|
|
if (!PCW_decoded)
|
|
|
|
|
|
{
|
|
|
|
|
|
/* if we haven't yet read until the end of the buffer, we can directly decode the so-called PCWs */
|
|
|
|
|
|
if ((BitsRead + segmentWidth( sect_cb ))<= ics->length_of_reordered_spectral_data)
|
|
|
|
|
|
{
|
|
|
|
|
|
Segment[ numberOfSegments ].len = segmentWidth( sect_cb );
|
|
|
|
|
|
|
|
|
|
|
|
if (segmentWidth( sect_cb ) > 32)
|
|
|
|
|
|
{
|
|
|
|
|
|
Segment[ numberOfSegments ].bufb = faad_showbits(ld, segmentWidth( sect_cb ) - 32);
|
|
|
|
|
|
faad_flushbits(ld, segmentWidth( sect_cb) - 32);
|
|
|
|
|
|
Segment[ numberOfSegments ].bufa = faad_showbits(ld, 32),
|
|
|
|
|
|
faad_flushbits(ld, 32 );
|
|
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
Segment[ numberOfSegments ].bufa = faad_showbits(ld, segmentWidth( sect_cb ));
|
|
|
|
|
|
Segment[ numberOfSegments ].bufb = 0;
|
|
|
|
|
|
faad_flushbits(ld, segmentWidth( sect_cb) );
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
huffman_spectral_data_2(sect_cb, &Segment[ numberOfSegments ], &spectral_data[sp]);
|
|
|
|
|
|
|
|
|
|
|
|
BitsRead += segmentWidth( sect_cb );
|
|
|
|
|
|
|
|
|
|
|
|
/* skip to next segment, but store left bits in new buffer */
|
|
|
|
|
|
rewind_bits( &Segment[ numberOfSegments ]);
|
|
|
|
|
|
|
|
|
|
|
|
numberOfSegments++;
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
|
|
/* the last segment is extended until length_of_reordered_spectral_data */
|
|
|
|
|
|
|
|
|
|
|
|
if (BitsRead < ics->length_of_reordered_spectral_data)
|
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
uint8_t additional_bits = (ics->length_of_reordered_spectral_data - BitsRead);
|
|
|
|
|
|
|
|
|
|
|
|
if ( additional_bits > 32)
|
|
|
|
|
|
{
|
|
|
|
|
|
hw = faad_showbits(ld, additional_bits - 32);
|
|
|
|
|
|
faad_flushbits(ld, additional_bits - 32);
|
|
|
|
|
|
lw = faad_showbits(ld, 32);
|
|
|
|
|
|
faad_flushbits(ld, 32 );
|
|
|
|
|
|
} else {
|
|
|
|
|
|
lw = faad_showbits(ld, additional_bits);
|
|
|
|
|
|
hw = 0;
|
|
|
|
|
|
faad_flushbits(ld, additional_bits );
|
|
|
|
|
|
}
|
|
|
|
|
|
rewind_lword( &hw, &lw, additional_bits + Segment[ numberOfSegments-1 ].len );
|
|
|
|
|
|
if (Segment[ numberOfSegments-1 ].len > 32)
|
|
|
|
|
|
{
|
|
|
|
|
|
Segment[ numberOfSegments-1 ].bufb = hw +
|
2003-10-03 22:23:26 +00:00
|
|
|
|
showbits_hcr(&Segment[ numberOfSegments-1 ], Segment[ numberOfSegments-1 ].len - 32);
|
2003-08-30 22:30:28 +00:00
|
|
|
|
Segment[ numberOfSegments-1 ].bufa = lw +
|
2003-10-03 22:23:26 +00:00
|
|
|
|
showbits_hcr(&Segment[ numberOfSegments-1 ], 32);
|
2003-08-30 22:30:28 +00:00
|
|
|
|
} else {
|
|
|
|
|
|
Segment[ numberOfSegments-1 ].bufa = lw +
|
2003-10-03 22:23:26 +00:00
|
|
|
|
showbits_hcr(&Segment[ numberOfSegments-1 ], Segment[ numberOfSegments-1 ].len);
|
2003-08-30 22:30:28 +00:00
|
|
|
|
Segment[ numberOfSegments-1 ].bufb = hw;
|
|
|
|
|
|
}
|
|
|
|
|
|
Segment[ numberOfSegments-1 ].len += additional_bits;
|
|
|
|
|
|
}
|
|
|
|
|
|
BitsRead = ics->length_of_reordered_spectral_data;
|
|
|
|
|
|
PCW_decoded = 1;
|
|
|
|
|
|
|
|
|
|
|
|
Codewords[ 0 ].sp_offset = sp;
|
|
|
|
|
|
Codewords[ 0 ].cb = sect_cb;
|
|
|
|
|
|
Codewords[ 0 ].decoded = 0;
|
|
|
|
|
|
Codewords[ 0 ].bits.len = 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
Codewords[ NrCodeWords - numberOfSegments ].sp_offset = sp;
|
|
|
|
|
|
Codewords[ NrCodeWords - numberOfSegments ].cb = sect_cb;
|
|
|
|
|
|
Codewords[ NrCodeWords - numberOfSegments ].decoded = 0;
|
|
|
|
|
|
Codewords[ NrCodeWords - numberOfSegments ].bits.len = 0;
|
|
|
|
|
|
|
|
|
|
|
|
} /* PCW decoded */
|
|
|
|
|
|
NrCodeWords++;
|
|
|
|
|
|
} /* of k */
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
} /* of i */
|
|
|
|
|
|
} /* of g */
|
|
|
|
|
|
} /* of w */
|
|
|
|
|
|
} /* of sfb */
|
|
|
|
|
|
} /* of presort */
|
|
|
|
|
|
|
|
|
|
|
|
/* Avoid divide by zero */
|
|
|
|
|
|
if (numberOfSegments == 0)
|
|
|
|
|
|
return 10; /* this is not good... */
|
|
|
|
|
|
|
|
|
|
|
|
numberOfSets = NrCodeWords / numberOfSegments;
|
|
|
|
|
|
|
|
|
|
|
|
/* second step: decode nonPCWs */
|
|
|
|
|
|
|
|
|
|
|
|
for (set = 1; set <= numberOfSets; set++)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint16_t trial;
|
|
|
|
|
|
|
|
|
|
|
|
for (trial = 0; trial < numberOfSegments; trial++)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint16_t codewordBase;
|
|
|
|
|
|
uint16_t set_decoded=numberOfSegments;
|
|
|
|
|
|
|
|
|
|
|
|
if (set == numberOfSets)
|
|
|
|
|
|
set_decoded = NrCodeWords - set*numberOfSegments; /* last set is shorter than the rest */
|
|
|
|
|
|
|
|
|
|
|
|
for (codewordBase = 0; codewordBase < numberOfSegments; codewordBase++)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint16_t segment_index = (trial + codewordBase) % numberOfSegments;
|
|
|
|
|
|
uint16_t codeword_index = codewordBase + set*numberOfSegments - numberOfSegments;
|
|
|
|
|
|
|
|
|
|
|
|
if ((codeword_index + numberOfSegments) >= NrCodeWords)
|
|
|
|
|
|
break;
|
|
|
|
|
|
if (!Codewords[ codeword_index ].decoded)
|
|
|
|
|
|
{
|
|
|
|
|
|
if ( Segment[ segment_index ].len > 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
uint8_t tmplen;
|
|
|
|
|
|
|
|
|
|
|
|
if (Codewords[ codeword_index ].bits.len != 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
/* on the first trial the data is only stored in Segment[], not in Codewords[].
|
|
|
|
|
|
On next trials first collect the data stored for this codeword and
|
|
|
|
|
|
concatenate the new data from Segment[] */
|
|
|
|
|
|
|
|
|
|
|
|
concat_bits( &Codewords[ codeword_index ].bits, &Segment[ segment_index ]);
|
|
|
|
|
|
/* Now everthing is stored in Segment[] */
|
|
|
|
|
|
}
|
|
|
|
|
|
tmplen = Segment[ segment_index ].len;
|
|
|
|
|
|
if ( huffman_spectral_data_2(Codewords[ codeword_index ].cb, &Segment[ segment_index ],
|
|
|
|
|
|
&spectral_data[ Codewords[ codeword_index ].sp_offset ]) >=0)
|
|
|
|
|
|
{
|
|
|
|
|
|
/* CW did fit into segment */
|
|
|
|
|
|
|
|
|
|
|
|
Codewords[ codeword_index ].decoded = 1;
|
|
|
|
|
|
set_decoded--;
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
|
|
/* CW did not fit, so store for later use */
|
|
|
|
|
|
|
|
|
|
|
|
Codewords[ codeword_index ].bits.len = tmplen;
|
|
|
|
|
|
Codewords[ codeword_index ].bits.bufa = Segment[ segment_index ].bufa;
|
|
|
|
|
|
Codewords[ codeword_index ].bits.bufb = Segment[ segment_index ].bufb;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
} /* of codewordBase */
|
|
|
|
|
|
|
|
|
|
|
|
if (set_decoded == 0) break; /* no undecoded codewords left in this set */
|
|
|
|
|
|
|
|
|
|
|
|
} /* of trial */
|
|
|
|
|
|
|
|
|
|
|
|
/* rewind all bits in remaining segments with len>0 */
|
|
|
|
|
|
for (i=0; i < numberOfSegments; i++)
|
|
|
|
|
|
rewind_bits( &Segment[ i ] );
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
|
{
|
|
|
|
|
|
int i, r=0, c=0;
|
|
|
|
|
|
for (i=0; i< numberOfSegments; i++)
|
|
|
|
|
|
r += Segment[ i ].len;
|
|
|
|
|
|
if (r != 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
printf("reordered_spectral_data: %d bits remaining!\n", r);
|
|
|
|
|
|
}
|
|
|
|
|
|
for (i=0; i< NrCodeWords - numberOfSegments; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (Codewords[ i ].decoded == 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
c++;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
if (c != 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
printf("reordered_spectral_data: %d Undecoded Codewords remaining!\n",c );
|
|
|
|
|
|
}
|
|
|
|
|
|
if ((r !=0) || (c!=0)) return 10;
|
|
|
|
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
#endif
|
