vdr/xine-lib-vdr/src/libmad D.dat Makefile.am Makefile.in bit.c bit.h fixed.c fixed.h frame.c frame.h global.h huffman.c huffman.h imdct_l_arm.S imdct_s.dat layer12.c layer12.h layer3.c layer3.h qc_table.dat rq_table.dat sf_table.dat stream.c stream.h synth.c synth.h timer.c timer.h version.c version.h xine_decoder.c
Darren Salt
pkg-vdr-dvb-changes@lists.alioth.debian.org
Mon, 04 Apr 2005 22:32:50 +0000
Update of /cvsroot/pkg-vdr-dvb/vdr/xine-lib-vdr/src/libmad
In directory haydn:/tmp/cvs-serv3673/src/libmad
Added Files:
D.dat Makefile.am Makefile.in bit.c bit.h fixed.c fixed.h
frame.c frame.h global.h huffman.c huffman.h imdct_l_arm.S
imdct_s.dat layer12.c layer12.h layer3.c layer3.h qc_table.dat
rq_table.dat sf_table.dat stream.c stream.h synth.c synth.h
timer.c timer.h version.c version.h xine_decoder.c
Log Message:
Import of VDR-patched xine-lib.
--- NEW FILE: layer3.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: layer3.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
[...2659 lines suppressed...]
extra = si.main_data_begin - md_len;
if (extra + frame_free > next_md_begin)
extra = next_md_begin - frame_free;
if (extra < stream->md_len) {
memmove(*stream->main_data,
*stream->main_data + stream->md_len - extra, extra);
stream->md_len = extra;
}
}
else
stream->md_len = 0;
memcpy(*stream->main_data + stream->md_len,
stream->next_frame - frame_free, frame_free);
stream->md_len += frame_free;
}
return result;
}
--- NEW FILE: layer12.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: layer12.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_LAYER12_H
# define LIBMAD_LAYER12_H
# include "stream.h"
# include "frame.h"
int mad_layer_I(struct mad_stream *, struct mad_frame *);
int mad_layer_II(struct mad_stream *, struct mad_frame *);
# endif
--- NEW FILE: version.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: version.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include "version.h"
char const mad_version[] = "MPEG Audio Decoder " MAD_VERSION;
char const mad_copyright[] = "Copyright (C) " MAD_PUBLISHYEAR " " MAD_AUTHOR;
char const mad_author[] = MAD_AUTHOR " <" MAD_EMAIL ">";
char const mad_build[] = ""
# if defined(DEBUG)
"DEBUG "
# elif defined(NDEBUG)
"NDEBUG "
# endif
# if defined(EXPERIMENTAL)
"EXPERIMENTAL "
# endif
# if defined(FPM_64BIT)
"FPM_64BIT "
# elif defined(FPM_INTEL)
"FPM_INTEL "
# elif defined(FPM_ARM)
"FPM_ARM "
# elif defined(FPM_MIPS)
"FPM_MIPS "
# elif defined(FPM_SPARC)
"FPM_SPARC "
# elif defined(FPM_PPC)
"FPM_PPC "
# elif defined(FPM_DEFAULT)
"FPM_DEFAULT "
# endif
# if defined(ASO_IMDCT)
"ASO_IMDCT "
# endif
# if defined(ASO_INTERLEAVE1)
"ASO_INTERLEAVE1 "
# endif
# if defined(ASO_INTERLEAVE2)
"ASO_INTERLEAVE2 "
# endif
# if defined(ASO_ZEROCHECK)
"ASO_ZEROCHECK "
# endif
# if defined(OPT_SPEED)
"OPT_SPEED "
# elif defined(OPT_ACCURACY)
"OPT_ACCURACY "
# endif
# if defined(OPT_SSO)
"OPT_SSO "
# endif
# if defined(OPT_DCTO) /* never defined here */
"OPT_DCTO "
# endif
# if defined(OPT_STRICT)
"OPT_STRICT "
# endif
;
--- NEW FILE: global.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: global.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_GLOBAL_H
# define LIBMAD_GLOBAL_H
/* conditional debugging */
# if defined(DEBUG) && defined(NDEBUG)
# error "cannot define both DEBUG and NDEBUG"
# endif
# if defined(DEBUG)
# include <stdio.h>
# endif
/* conditional features */
# if defined(OPT_SPEED) && defined(OPT_ACCURACY)
# error "cannot optimize for both speed and accuracy"
# endif
# if defined(OPT_SPEED) && !defined(OPT_SSO)
# define OPT_SSO
# endif
# if defined(HAVE_UNISTD_H) && defined(HAVE_WAITPID) && \
defined(HAVE_FCNTL) && defined(HAVE_PIPE) && defined(HAVE_FORK)
# define USE_ASYNC
# endif
# if !defined(HAVE_ASSERT_H)
# if defined(NDEBUG)
# define assert(x) /* nothing */
# else
# define assert(x) do { if (!(x)) abort(); } while (0)
# endif
# endif
# endif
--- NEW FILE: version.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: version.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_VERSION_H
# define LIBMAD_VERSION_H
# define MAD_VERSION_MAJOR 0
# define MAD_VERSION_MINOR 15
# define MAD_VERSION_PATCH 1
# define MAD_VERSION_EXTRA " (beta)"
# define MAD_VERSION_STRINGIZE(str) #str
# define MAD_VERSION_STRING(num) MAD_VERSION_STRINGIZE(num)
# define MAD_VERSION MAD_VERSION_STRING(MAD_VERSION_MAJOR) "." \
MAD_VERSION_STRING(MAD_VERSION_MINOR) "." \
MAD_VERSION_STRING(MAD_VERSION_PATCH) \
MAD_VERSION_EXTRA
# define MAD_PUBLISHYEAR "2000-2004"
# define MAD_AUTHOR "Underbit Technologies, Inc."
# define MAD_EMAIL "info@underbit.com"
extern char const mad_version[];
extern char const mad_copyright[];
extern char const mad_author[];
extern char const mad_build[];
# endif
--- NEW FILE: layer12.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: layer12.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# ifdef HAVE_LIMITS_H
# include <limits.h>
# else
# define CHAR_BIT 8
# endif
# include "fixed.h"
# include "bit.h"
# include "stream.h"
# include "frame.h"
# include "layer12.h"
/*
* scalefactor table
* used in both Layer I and Layer II decoding
*/
static
mad_fixed_t const sf_table[64] = {
# include "sf_table.dat"
};
/* --- Layer I ------------------------------------------------------------- */
/* linear scaling table */
static
mad_fixed_t const linear_table[14] = {
MAD_F(0x15555555), /* 2^2 / (2^2 - 1) == 1.33333333333333 */
MAD_F(0x12492492), /* 2^3 / (2^3 - 1) == 1.14285714285714 */
MAD_F(0x11111111), /* 2^4 / (2^4 - 1) == 1.06666666666667 */
MAD_F(0x10842108), /* 2^5 / (2^5 - 1) == 1.03225806451613 */
MAD_F(0x10410410), /* 2^6 / (2^6 - 1) == 1.01587301587302 */
MAD_F(0x10204081), /* 2^7 / (2^7 - 1) == 1.00787401574803 */
MAD_F(0x10101010), /* 2^8 / (2^8 - 1) == 1.00392156862745 */
MAD_F(0x10080402), /* 2^9 / (2^9 - 1) == 1.00195694716243 */
MAD_F(0x10040100), /* 2^10 / (2^10 - 1) == 1.00097751710655 */
MAD_F(0x10020040), /* 2^11 / (2^11 - 1) == 1.00048851978505 */
MAD_F(0x10010010), /* 2^12 / (2^12 - 1) == 1.00024420024420 */
MAD_F(0x10008004), /* 2^13 / (2^13 - 1) == 1.00012208521548 */
MAD_F(0x10004001), /* 2^14 / (2^14 - 1) == 1.00006103888177 */
MAD_F(0x10002000) /* 2^15 / (2^15 - 1) == 1.00003051850948 */
};
/*
* NAME: I_sample()
* DESCRIPTION: decode one requantized Layer I sample from a bitstream
*/
static
mad_fixed_t I_sample(struct mad_bitptr *ptr, unsigned int nb)
{
mad_fixed_t sample;
sample = mad_bit_read(ptr, nb);
/* invert most significant bit, extend sign, then scale to fixed format */
sample ^= 1 << (nb - 1);
sample |= -(sample & (1 << (nb - 1)));
sample <<= MAD_F_FRACBITS - (nb - 1);
/* requantize the sample */
/* s'' = (2^nb / (2^nb - 1)) * (s''' + 2^(-nb + 1)) */
sample += MAD_F_ONE >> (nb - 1);
return mad_f_mul(sample, linear_table[nb - 2]);
/* s' = factor * s'' */
/* (to be performed by caller) */
}
/*
* NAME: layer->I()
* DESCRIPTION: decode a single Layer I frame
*/
int mad_layer_I(struct mad_stream *stream, struct mad_frame *frame)
{
struct mad_header *header = &frame->header;
unsigned int nch, bound, ch, s, sb, nb;
unsigned char allocation[2][32], scalefactor[2][32];
nch = MAD_NCHANNELS(header);
bound = 32;
if (header->mode == MAD_MODE_JOINT_STEREO) {
header->flags |= MAD_FLAG_I_STEREO;
bound = 4 + header->mode_extension * 4;
}
/* check CRC word */
if (header->flags & MAD_FLAG_PROTECTION) {
header->crc_check =
mad_bit_crc(stream->ptr, 4 * (bound * nch + (32 - bound)),
header->crc_check);
if (header->crc_check != header->crc_target &&
!(frame->options & MAD_OPTION_IGNORECRC)) {
stream->error = MAD_ERROR_BADCRC;
return -1;
}
}
/* decode bit allocations */
for (sb = 0; sb < bound; ++sb) {
for (ch = 0; ch < nch; ++ch) {
nb = mad_bit_read(&stream->ptr, 4);
if (nb == 15) {
stream->error = MAD_ERROR_BADBITALLOC;
return -1;
}
allocation[ch][sb] = nb ? nb + 1 : 0;
}
}
for (sb = bound; sb < 32; ++sb) {
nb = mad_bit_read(&stream->ptr, 4);
if (nb == 15) {
stream->error = MAD_ERROR_BADBITALLOC;
return -1;
}
allocation[0][sb] =
allocation[1][sb] = nb ? nb + 1 : 0;
}
/* decode scalefactors */
for (sb = 0; sb < 32; ++sb) {
for (ch = 0; ch < nch; ++ch) {
if (allocation[ch][sb]) {
scalefactor[ch][sb] = mad_bit_read(&stream->ptr, 6);
# if defined(OPT_STRICT)
/*
* Scalefactor index 63 does not appear in Table B.1 of
* ISO/IEC 11172-3. Nonetheless, other implementations accept it,
* so we only reject it if OPT_STRICT is defined.
*/
if (scalefactor[ch][sb] == 63) {
stream->error = MAD_ERROR_BADSCALEFACTOR;
return -1;
}
# endif
}
}
}
/* decode samples */
for (s = 0; s < 12; ++s) {
for (sb = 0; sb < bound; ++sb) {
for (ch = 0; ch < nch; ++ch) {
nb = allocation[ch][sb];
frame->sbsample[ch][s][sb] = nb ?
mad_f_mul(I_sample(&stream->ptr, nb),
sf_table[scalefactor[ch][sb]]) : 0;
}
}
for (sb = bound; sb < 32; ++sb) {
if ((nb = allocation[0][sb])) {
mad_fixed_t sample;
sample = I_sample(&stream->ptr, nb);
for (ch = 0; ch < nch; ++ch) {
frame->sbsample[ch][s][sb] =
mad_f_mul(sample, sf_table[scalefactor[ch][sb]]);
}
}
else {
for (ch = 0; ch < nch; ++ch)
frame->sbsample[ch][s][sb] = 0;
}
}
}
return 0;
}
/* --- Layer II ------------------------------------------------------------ */
/* possible quantization per subband table */
static
struct {
unsigned int sblimit;
unsigned char const offsets[30];
} const sbquant_table[5] = {
/* ISO/IEC 11172-3 Table B.2a */
{ 27, { 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, /* 0 */
3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0 } },
/* ISO/IEC 11172-3 Table B.2b */
{ 30, { 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, /* 1 */
3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0 } },
/* ISO/IEC 11172-3 Table B.2c */
{ 8, { 5, 5, 2, 2, 2, 2, 2, 2 } }, /* 2 */
/* ISO/IEC 11172-3 Table B.2d */
{ 12, { 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 } }, /* 3 */
/* ISO/IEC 13818-3 Table B.1 */
{ 30, { 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, /* 4 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 } }
};
/* bit allocation table */
static
struct {
unsigned short nbal;
unsigned short offset;
} const bitalloc_table[8] = {
{ 2, 0 }, /* 0 */
{ 2, 3 }, /* 1 */
{ 3, 3 }, /* 2 */
{ 3, 1 }, /* 3 */
{ 4, 2 }, /* 4 */
{ 4, 3 }, /* 5 */
{ 4, 4 }, /* 6 */
{ 4, 5 } /* 7 */
};
/* offsets into quantization class table */
static
unsigned char const offset_table[6][15] = {
{ 0, 1, 16 }, /* 0 */
{ 0, 1, 2, 3, 4, 5, 16 }, /* 1 */
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, /* 2 */
{ 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, /* 3 */
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16 }, /* 4 */
{ 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 } /* 5 */
};
/* quantization class table */
static
struct quantclass {
unsigned short nlevels;
unsigned char group;
unsigned char bits;
mad_fixed_t C;
mad_fixed_t D;
} const qc_table[17] = {
# include "qc_table.dat"
};
/*
* NAME: II_samples()
* DESCRIPTION: decode three requantized Layer II samples from a bitstream
*/
static
void II_samples(struct mad_bitptr *ptr,
struct quantclass const *quantclass,
mad_fixed_t output[3])
{
unsigned int nb, s, sample[3];
if ((nb = quantclass->group)) {
unsigned int c, nlevels;
/* degrouping */
c = mad_bit_read(ptr, quantclass->bits);
nlevels = quantclass->nlevels;
for (s = 0; s < 3; ++s) {
sample[s] = c % nlevels;
c /= nlevels;
}
}
else {
nb = quantclass->bits;
for (s = 0; s < 3; ++s)
sample[s] = mad_bit_read(ptr, nb);
}
for (s = 0; s < 3; ++s) {
mad_fixed_t requantized;
/* invert most significant bit, extend sign, then scale to fixed format */
requantized = sample[s] ^ (1 << (nb - 1));
requantized |= -(requantized & (1 << (nb - 1)));
requantized <<= MAD_F_FRACBITS - (nb - 1);
/* requantize the sample */
/* s'' = C * (s''' + D) */
output[s] = mad_f_mul(requantized + quantclass->D, quantclass->C);
/* s' = factor * s'' */
/* (to be performed by caller) */
}
}
/*
* NAME: layer->II()
* DESCRIPTION: decode a single Layer II frame
*/
int mad_layer_II(struct mad_stream *stream, struct mad_frame *frame)
{
struct mad_header *header = &frame->header;
struct mad_bitptr start;
unsigned int index, sblimit, nbal, nch, bound, gr, ch, s, sb;
unsigned char const *offsets;
unsigned char allocation[2][32], scfsi[2][32], scalefactor[2][32][3];
mad_fixed_t samples[3];
nch = MAD_NCHANNELS(header);
if (header->flags & MAD_FLAG_LSF_EXT)
index = 4;
else if (header->flags & MAD_FLAG_FREEFORMAT)
goto freeformat;
else {
unsigned long bitrate_per_channel;
bitrate_per_channel = header->bitrate;
if (nch == 2) {
bitrate_per_channel /= 2;
# if defined(OPT_STRICT)
/*
* ISO/IEC 11172-3 allows only single channel mode for 32, 48, 56, and
* 80 kbps bitrates in Layer II, but some encoders ignore this
* restriction. We enforce it if OPT_STRICT is defined.
*/
if (bitrate_per_channel <= 28000 || bitrate_per_channel == 40000) {
stream->error = MAD_ERROR_BADMODE;
return -1;
}
# endif
}
else { /* nch == 1 */
if (bitrate_per_channel > 192000) {
/*
* ISO/IEC 11172-3 does not allow single channel mode for 224, 256,
* 320, or 384 kbps bitrates in Layer II.
*/
stream->error = MAD_ERROR_BADMODE;
return -1;
}
}
if (bitrate_per_channel <= 48000)
index = (header->samplerate == 32000) ? 3 : 2;
else if (bitrate_per_channel <= 80000)
index = 0;
else {
freeformat:
index = (header->samplerate == 48000) ? 0 : 1;
}
}
sblimit = sbquant_table[index].sblimit;
offsets = sbquant_table[index].offsets;
bound = 32;
if (header->mode == MAD_MODE_JOINT_STEREO) {
header->flags |= MAD_FLAG_I_STEREO;
bound = 4 + header->mode_extension * 4;
}
if (bound > sblimit)
bound = sblimit;
start = stream->ptr;
/* decode bit allocations */
for (sb = 0; sb < bound; ++sb) {
nbal = bitalloc_table[offsets[sb]].nbal;
for (ch = 0; ch < nch; ++ch)
allocation[ch][sb] = mad_bit_read(&stream->ptr, nbal);
}
for (sb = bound; sb < sblimit; ++sb) {
nbal = bitalloc_table[offsets[sb]].nbal;
allocation[0][sb] =
allocation[1][sb] = mad_bit_read(&stream->ptr, nbal);
}
/* decode scalefactor selection info */
for (sb = 0; sb < sblimit; ++sb) {
for (ch = 0; ch < nch; ++ch) {
if (allocation[ch][sb])
scfsi[ch][sb] = mad_bit_read(&stream->ptr, 2);
}
}
/* check CRC word */
if (header->flags & MAD_FLAG_PROTECTION) {
header->crc_check =
mad_bit_crc(start, mad_bit_length(&start, &stream->ptr),
header->crc_check);
if (header->crc_check != header->crc_target &&
!(frame->options & MAD_OPTION_IGNORECRC)) {
stream->error = MAD_ERROR_BADCRC;
return -1;
}
}
/* decode scalefactors */
for (sb = 0; sb < sblimit; ++sb) {
for (ch = 0; ch < nch; ++ch) {
if (allocation[ch][sb]) {
scalefactor[ch][sb][0] = mad_bit_read(&stream->ptr, 6);
switch (scfsi[ch][sb]) {
case 2:
scalefactor[ch][sb][2] =
scalefactor[ch][sb][1] =
scalefactor[ch][sb][0];
break;
case 0:
scalefactor[ch][sb][1] = mad_bit_read(&stream->ptr, 6);
/* fall through */
case 1:
case 3:
scalefactor[ch][sb][2] = mad_bit_read(&stream->ptr, 6);
}
if (scfsi[ch][sb] & 1)
scalefactor[ch][sb][1] = scalefactor[ch][sb][scfsi[ch][sb] - 1];
# if defined(OPT_STRICT)
/*
* Scalefactor index 63 does not appear in Table B.1 of
* ISO/IEC 11172-3. Nonetheless, other implementations accept it,
* so we only reject it if OPT_STRICT is defined.
*/
if (scalefactor[ch][sb][0] == 63 ||
scalefactor[ch][sb][1] == 63 ||
scalefactor[ch][sb][2] == 63) {
stream->error = MAD_ERROR_BADSCALEFACTOR;
return -1;
}
# endif
}
}
}
/* decode samples */
for (gr = 0; gr < 12; ++gr) {
for (sb = 0; sb < bound; ++sb) {
for (ch = 0; ch < nch; ++ch) {
if ((index = allocation[ch][sb])) {
index = offset_table[bitalloc_table[offsets[sb]].offset][index - 1];
II_samples(&stream->ptr, &qc_table[index], samples);
for (s = 0; s < 3; ++s) {
frame->sbsample[ch][3 * gr + s][sb] =
mad_f_mul(samples[s], sf_table[scalefactor[ch][sb][gr / 4]]);
}
}
else {
for (s = 0; s < 3; ++s)
frame->sbsample[ch][3 * gr + s][sb] = 0;
}
}
}
for (sb = bound; sb < sblimit; ++sb) {
if ((index = allocation[0][sb])) {
index = offset_table[bitalloc_table[offsets[sb]].offset][index - 1];
II_samples(&stream->ptr, &qc_table[index], samples);
for (ch = 0; ch < nch; ++ch) {
for (s = 0; s < 3; ++s) {
frame->sbsample[ch][3 * gr + s][sb] =
mad_f_mul(samples[s], sf_table[scalefactor[ch][sb][gr / 4]]);
}
}
}
else {
for (ch = 0; ch < nch; ++ch) {
for (s = 0; s < 3; ++s)
frame->sbsample[ch][3 * gr + s][sb] = 0;
}
}
}
for (ch = 0; ch < nch; ++ch) {
for (s = 0; s < 3; ++s) {
for (sb = sblimit; sb < 32; ++sb)
frame->sbsample[ch][3 * gr + s][sb] = 0;
}
}
}
return 0;
}
--- NEW FILE: layer3.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: layer3.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_LAYER3_H
# define LIBMAD_LAYER3_H
# include "stream.h"
# include "frame.h"
int mad_layer_III(struct mad_stream *, struct mad_frame *);
# endif
--- NEW FILE: Makefile.am ---
include $(top_srcdir)/misc/Makefile.common
AM_CFLAGS = -DOPT_SPEED
EXTRA_DIST = imdct_l_arm.S
libdir = $(XINE_PLUGINDIR)
lib_LTLIBRARIES = xineplug_decode_mad.la
xineplug_decode_mad_la_SOURCES = \
bit.c \
fixed.c \
frame.c \
huffman.c \
layer12.c \
layer3.c \
stream.c \
synth.c \
timer.c \
version.c \
xine_decoder.c
xineplug_decode_mad_la_LIBADD = $(XINE_LIB)
xineplug_decode_mad_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@
noinst_HEADERS = \
D.dat \
imdct_s.dat \
qc_table.dat \
rq_table.dat \
sf_table.dat \
bit.h \
fixed.h \
frame.h \
global.h \
huffman.h \
layer12.h \
layer3.h \
stream.h \
synth.h \
timer.h \
version.h
--- NEW FILE: fixed.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: fixed.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_FIXED_H
# define LIBMAD_FIXED_H
# if SIZEOF_INT >= 4
typedef signed int mad_fixed_t;
typedef signed int mad_fixed64hi_t;
typedef unsigned int mad_fixed64lo_t;
# else
typedef signed long mad_fixed_t;
typedef signed long mad_fixed64hi_t;
typedef unsigned long mad_fixed64lo_t;
# endif
# if defined(_MSC_VER)
# define mad_fixed64_t signed __int64
# elif 1 || defined(__GNUC__)
# define mad_fixed64_t signed long long
# endif
# if defined(FPM_FLOAT)
typedef double mad_sample_t;
# else
typedef mad_fixed_t mad_sample_t;
# endif
/*
* Fixed-point format: 0xABBBBBBB
* A == whole part (sign + 3 bits)
* B == fractional part (28 bits)
*
* Values are signed two's complement, so the effective range is:
* 0x80000000 to 0x7fffffff
* -8.0 to +7.9999999962747097015380859375
*
* The smallest representable value is:
* 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9)
*
* 28 bits of fractional accuracy represent about
* 8.6 digits of decimal accuracy.
*
* Fixed-point numbers can be added or subtracted as normal
* integers, but multiplication requires shifting the 64-bit result
* from 56 fractional bits back to 28 (and rounding.)
*
* Changing the definition of MAD_F_FRACBITS is only partially
* supported, and must be done with care.
*/
# define MAD_F_FRACBITS 28
# if MAD_F_FRACBITS == 28
# define MAD_F(x) ((mad_fixed_t) (x##L))
# else
# if MAD_F_FRACBITS < 28
# warning "MAD_F_FRACBITS < 28"
# define MAD_F(x) ((mad_fixed_t) \
(((x##L) + \
(1L << (28 - MAD_F_FRACBITS - 1))) >> \
(28 - MAD_F_FRACBITS)))
# elif MAD_F_FRACBITS > 28
# error "MAD_F_FRACBITS > 28 not currently supported"
# define MAD_F(x) ((mad_fixed_t) \
((x##L) << (MAD_F_FRACBITS - 28)))
# endif
# endif
# define MAD_F_MIN ((mad_fixed_t) -0x80000000L)
# define MAD_F_MAX ((mad_fixed_t) +0x7fffffffL)
# define MAD_F_ONE MAD_F(0x10000000)
# define mad_f_tofixed(x) ((mad_fixed_t) \
((x) * (double) (1L << MAD_F_FRACBITS) + 0.5))
# define mad_f_todouble(x) ((double) \
((x) / (double) (1L << MAD_F_FRACBITS)))
# define mad_f_intpart(x) ((x) >> MAD_F_FRACBITS)
# define mad_f_fracpart(x) ((x) & ((1L << MAD_F_FRACBITS) - 1))
/* (x should be positive) */
# define mad_f_fromint(x) ((x) << MAD_F_FRACBITS)
# define mad_f_add(x, y) ((x) + (y))
# define mad_f_sub(x, y) ((x) - (y))
# if defined(FPM_FLOAT)
# error "FPM_FLOAT not yet supported"
# undef MAD_F
# define MAD_F(x) mad_f_todouble(x)
# define mad_f_mul(x, y) ((x) * (y))
# define mad_f_scale64
# undef ASO_ZEROCHECK
# elif defined(FPM_64BIT)
/*
* This version should be the most accurate if 64-bit types are supported by
* the compiler, although it may not be the most efficient.
*/
# if defined(OPT_ACCURACY)
# define mad_f_mul(x, y) \
((mad_fixed_t) \
((((mad_fixed64_t) (x) * (y)) + \
(1L << (MAD_F_SCALEBITS - 1))) >> MAD_F_SCALEBITS))
# else
# define mad_f_mul(x, y) \
((mad_fixed_t) (((mad_fixed64_t) (x) * (y)) >> MAD_F_SCALEBITS))
# endif
# define MAD_F_SCALEBITS MAD_F_FRACBITS
/* --- Intel --------------------------------------------------------------- */
# elif defined(FPM_INTEL)
# if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable: 4035) /* no return value */
static __forceinline
mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y)
{
enum {
fracbits = MAD_F_FRACBITS
};
__asm {
mov eax, x
imul y
shrd eax, edx, fracbits
}
/* implicit return of eax */
}
# pragma warning(pop)
# define mad_f_mul mad_f_mul_inline
# define mad_f_scale64
# else
/*
* This Intel version is fast and accurate; the disposition of the least
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
*/
# define MAD_F_MLX(hi, lo, x, y) \
asm ("imull %3" \
: "=a" (lo), "=d" (hi) \
: "%a" (x), "rm" (y) \
: "cc")
# if defined(OPT_ACCURACY)
/*
* This gives best accuracy but is not very fast.
*/
# define MAD_F_MLA(hi, lo, x, y) \
({ mad_fixed64hi_t __hi; \
mad_fixed64lo_t __lo; \
MAD_F_MLX(__hi, __lo, (x), (y)); \
asm ("addl %2,%0\n\t" \
"adcl %3,%1" \
: "=rm" (lo), "=rm" (hi) \
: "r" (__lo), "r" (__hi), "0" (lo), "1" (hi) \
: "cc"); \
})
# endif /* OPT_ACCURACY */
# if defined(OPT_ACCURACY)
/*
* Surprisingly, this is faster than SHRD followed by ADC.
*/
# define mad_f_scale64(hi, lo) \
({ mad_fixed64hi_t __hi_; \
mad_fixed64lo_t __lo_; \
mad_fixed_t __result; \
asm ("addl %4,%2\n\t" \
"adcl %5,%3" \
: "=rm" (__lo_), "=rm" (__hi_) \
: "0" (lo), "1" (hi), \
"ir" (1L << (MAD_F_SCALEBITS - 1)), "ir" (0) \
: "cc"); \
asm ("shrdl %3,%2,%1" \
: "=rm" (__result) \
: "0" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS) \
: "cc"); \
__result; \
})
# elif defined(OPT_INTEL)
/*
* Alternate Intel scaling that may or may not perform better.
*/
# define mad_f_scale64(hi, lo) \
({ mad_fixed_t __result; \
asm ("shrl %3,%1\n\t" \
"shll %4,%2\n\t" \
"orl %2,%1" \
: "=rm" (__result) \
: "0" (lo), "r" (hi), \
"I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS) \
: "cc"); \
__result; \
})
# else
# define mad_f_scale64(hi, lo) \
({ mad_fixed_t __result; \
asm ("shrdl %3,%2,%1" \
: "=rm" (__result) \
: "0" (lo), "r" (hi), "I" (MAD_F_SCALEBITS) \
: "cc"); \
__result; \
})
# endif /* OPT_ACCURACY */
# define MAD_F_SCALEBITS MAD_F_FRACBITS
# endif
/* --- ARM ----------------------------------------------------------------- */
# elif defined(FPM_ARM)
/*
* This ARM V4 version is as accurate as FPM_64BIT but much faster. The
* least significant bit is properly rounded at no CPU cycle cost!
*/
# if 1
/*
* This is faster than the default implementation via MAD_F_MLX() and
* mad_f_scale64().
*/
# define mad_f_mul(x, y) \
({ mad_fixed64hi_t __hi; \
mad_fixed64lo_t __lo; \
mad_fixed_t __result; \
asm ("smull %0, %1, %3, %4\n\t" \
"movs %0, %0, lsr %5\n\t" \
"adc %2, %0, %1, lsl %6" \
: "=&r" (__lo), "=&r" (__hi), "=r" (__result) \
: "%r" (x), "r" (y), \
"M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \
: "cc"); \
__result; \
})
# endif
# define MAD_F_MLX(hi, lo, x, y) \
asm ("smull %0, %1, %2, %3" \
: "=&r" (lo), "=&r" (hi) \
: "%r" (x), "r" (y))
# define MAD_F_MLA(hi, lo, x, y) \
asm ("smlal %0, %1, %2, %3" \
: "+r" (lo), "+r" (hi) \
: "%r" (x), "r" (y))
# define MAD_F_MLN(hi, lo) \
asm ("rsbs %0, %2, #0\n\t" \
"rsc %1, %3, #0" \
: "=r" (lo), "=r" (hi) \
: "0" (lo), "1" (hi) \
: "cc")
# define mad_f_scale64(hi, lo) \
({ mad_fixed_t __result; \
asm ("movs %0, %1, lsr %3\n\t" \
"adc %0, %0, %2, lsl %4" \
: "=&r" (__result) \
: "r" (lo), "r" (hi), \
"M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \
: "cc"); \
__result; \
})
# define MAD_F_SCALEBITS MAD_F_FRACBITS
/* --- MIPS ---------------------------------------------------------------- */
# elif defined(FPM_MIPS)
/*
* This MIPS version is fast and accurate; the disposition of the least
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
*/
# define MAD_F_MLX(hi, lo, x, y) \
asm ("mult %2,%3" \
: "=l" (lo), "=h" (hi) \
: "%r" (x), "r" (y))
# if defined(HAVE_MADD_ASM)
# define MAD_F_MLA(hi, lo, x, y) \
asm ("madd %2,%3" \
: "+l" (lo), "+h" (hi) \
: "%r" (x), "r" (y))
# elif defined(HAVE_MADD16_ASM)
/*
* This loses significant accuracy due to the 16-bit integer limit in the
* multiply/accumulate instruction.
*/
# define MAD_F_ML0(hi, lo, x, y) \
asm ("mult %2,%3" \
: "=l" (lo), "=h" (hi) \
: "%r" ((x) >> 12), "r" ((y) >> 16))
# define MAD_F_MLA(hi, lo, x, y) \
asm ("madd16 %2,%3" \
: "+l" (lo), "+h" (hi) \
: "%r" ((x) >> 12), "r" ((y) >> 16))
# define MAD_F_MLZ(hi, lo) ((mad_fixed_t) (lo))
# endif
# if defined(OPT_SPEED)
# define mad_f_scale64(hi, lo) \
((mad_fixed_t) ((hi) << (32 - MAD_F_SCALEBITS)))
# define MAD_F_SCALEBITS MAD_F_FRACBITS
# endif
/* --- SPARC --------------------------------------------------------------- */
# elif defined(FPM_SPARC)
/*
* This SPARC V8 version is fast and accurate; the disposition of the least
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
*/
# define MAD_F_MLX(hi, lo, x, y) \
asm ("smul %2, %3, %0\n\t" \
"rd %%y, %1" \
: "=r" (lo), "=r" (hi) \
: "%r" (x), "rI" (y))
/* --- PowerPC ------------------------------------------------------------- */
# elif defined(FPM_PPC)
/*
* This PowerPC version is fast and accurate; the disposition of the least
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
*/
# define MAD_F_MLX(hi, lo, x, y) \
do { \
asm ("mullw %0,%1,%2" \
: "=r" (lo) \
: "%r" (x), "r" (y)); \
asm ("mulhw %0,%1,%2" \
: "=r" (hi) \
: "%r" (x), "r" (y)); \
} \
while (0)
# if defined(OPT_ACCURACY)
/*
* This gives best accuracy but is not very fast.
*/
# define MAD_F_MLA(hi, lo, x, y) \
({ mad_fixed64hi_t __hi; \
mad_fixed64lo_t __lo; \
MAD_F_MLX(__hi, __lo, (x), (y)); \
asm ("addc %0,%2,%3\n\t" \
"adde %1,%4,%5" \
: "=r" (lo), "=r" (hi) \
: "%r" (lo), "r" (__lo), \
"%r" (hi), "r" (__hi) \
: "xer"); \
})
# endif
# if defined(OPT_ACCURACY)
/*
* This is slower than the truncating version below it.
*/
# define mad_f_scale64(hi, lo) \
({ mad_fixed_t __result, __round; \
asm ("rotrwi %0,%1,%2" \
: "=r" (__result) \
: "r" (lo), "i" (MAD_F_SCALEBITS)); \
asm ("extrwi %0,%1,1,0" \
: "=r" (__round) \
: "r" (__result)); \
asm ("insrwi %0,%1,%2,0" \
: "+r" (__result) \
: "r" (hi), "i" (MAD_F_SCALEBITS)); \
asm ("add %0,%1,%2" \
: "=r" (__result) \
: "%r" (__result), "r" (__round)); \
__result; \
})
# else
# define mad_f_scale64(hi, lo) \
({ mad_fixed_t __result; \
asm ("rotrwi %0,%1,%2" \
: "=r" (__result) \
: "r" (lo), "i" (MAD_F_SCALEBITS)); \
asm ("insrwi %0,%1,%2,0" \
: "+r" (__result) \
: "r" (hi), "i" (MAD_F_SCALEBITS)); \
__result; \
})
# endif
# define MAD_F_SCALEBITS MAD_F_FRACBITS
/* --- Default ------------------------------------------------------------- */
# elif defined(FPM_DEFAULT)
/*
* This version is the most portable but it loses significant accuracy.
* Furthermore, accuracy is biased against the second argument, so care
* should be taken when ordering operands.
*
* The scale factors are constant as this is not used with SSO.
*
* Pre-rounding is required to stay within the limits of compliance.
*/
# if defined(OPT_SPEED)
# define mad_f_mul(x, y) (((x) >> 12) * ((y) >> 16))
# else
# define mad_f_mul(x, y) ((((x) + (1L << 11)) >> 12) * \
(((y) + (1L << 15)) >> 16))
# endif
/* ------------------------------------------------------------------------- */
# else
# error "no FPM selected"
# endif
/* default implementations */
# if !defined(mad_f_mul)
# define mad_f_mul(x, y) \
({ register mad_fixed64hi_t __hi; \
register mad_fixed64lo_t __lo; \
MAD_F_MLX(__hi, __lo, (x), (y)); \
mad_f_scale64(__hi, __lo); \
})
# endif
# if !defined(MAD_F_MLA)
# define MAD_F_ML0(hi, lo, x, y) ((lo) = mad_f_mul((x), (y)))
# define MAD_F_MLA(hi, lo, x, y) ((lo) += mad_f_mul((x), (y)))
# define MAD_F_MLN(hi, lo) ((lo) = -(lo))
# define MAD_F_MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo))
# endif
# if !defined(MAD_F_ML0)
# define MAD_F_ML0(hi, lo, x, y) MAD_F_MLX((hi), (lo), (x), (y))
# endif
# if !defined(MAD_F_MLN)
# define MAD_F_MLN(hi, lo) ((hi) = ((lo) = -(lo)) ? ~(hi) : -(hi))
# endif
# if !defined(MAD_F_MLZ)
# define MAD_F_MLZ(hi, lo) mad_f_scale64((hi), (lo))
# endif
# if !defined(mad_f_scale64)
# if defined(OPT_ACCURACY)
# define mad_f_scale64(hi, lo) \
((((mad_fixed_t) \
(((hi) << (32 - (MAD_F_SCALEBITS - 1))) | \
((lo) >> (MAD_F_SCALEBITS - 1)))) + 1) >> 1)
# else
# define mad_f_scale64(hi, lo) \
((mad_fixed_t) \
(((hi) << (32 - MAD_F_SCALEBITS)) | \
((lo) >> MAD_F_SCALEBITS)))
# endif
# define MAD_F_SCALEBITS MAD_F_FRACBITS
# endif
/* C routines */
mad_fixed_t mad_f_abs(mad_fixed_t);
mad_fixed_t mad_f_div(mad_fixed_t, mad_fixed_t);
# endif
--- NEW FILE: frame.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: frame.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include "bit.h"
# include "stream.h"
# include "frame.h"
# include "timer.h"
# include "layer12.h"
# include "layer3.h"
static
unsigned long const bitrate_table[5][15] = {
/* MPEG-1 */
{ 0, 32000, 64000, 96000, 128000, 160000, 192000, 224000, /* Layer I */
256000, 288000, 320000, 352000, 384000, 416000, 448000 },
{ 0, 32000, 48000, 56000, 64000, 80000, 96000, 112000, /* Layer II */
128000, 160000, 192000, 224000, 256000, 320000, 384000 },
{ 0, 32000, 40000, 48000, 56000, 64000, 80000, 96000, /* Layer III */
112000, 128000, 160000, 192000, 224000, 256000, 320000 },
/* MPEG-2 LSF */
{ 0, 32000, 48000, 56000, 64000, 80000, 96000, 112000, /* Layer I */
128000, 144000, 160000, 176000, 192000, 224000, 256000 },
{ 0, 8000, 16000, 24000, 32000, 40000, 48000, 56000, /* Layers */
64000, 80000, 96000, 112000, 128000, 144000, 160000 } /* II & III */
};
static
unsigned int const samplerate_table[3] = { 44100, 48000, 32000 };
static
int (*const decoder_table[3])(struct mad_stream *, struct mad_frame *) = {
mad_layer_I,
mad_layer_II,
mad_layer_III
};
/*
* NAME: header->init()
* DESCRIPTION: initialize header struct
*/
void mad_header_init(struct mad_header *header)
{
header->layer = 0;
header->mode = 0;
header->mode_extension = 0;
header->emphasis = 0;
header->bitrate = 0;
header->samplerate = 0;
header->crc_check = 0;
header->crc_target = 0;
header->flags = 0;
header->private_bits = 0;
header->duration = mad_timer_zero;
}
/*
* NAME: frame->init()
* DESCRIPTION: initialize frame struct
*/
void mad_frame_init(struct mad_frame *frame)
{
mad_header_init(&frame->header);
frame->options = 0;
frame->overlap = 0;
mad_frame_mute(frame);
}
/*
* NAME: frame->finish()
* DESCRIPTION: deallocate any dynamic memory associated with frame
*/
void mad_frame_finish(struct mad_frame *frame)
{
mad_header_finish(&frame->header);
if (frame->overlap) {
free(frame->overlap);
frame->overlap = 0;
}
}
/*
* NAME: decode_header()
* DESCRIPTION: read header data and following CRC word
*/
static
int decode_header(struct mad_header *header, struct mad_stream *stream)
{
unsigned int index;
header->flags = 0;
header->private_bits = 0;
/* header() */
/* syncword */
mad_bit_skip(&stream->ptr, 11);
/* MPEG 2.5 indicator (really part of syncword) */
if (mad_bit_read(&stream->ptr, 1) == 0)
header->flags |= MAD_FLAG_MPEG_2_5_EXT;
/* ID */
if (mad_bit_read(&stream->ptr, 1) == 0)
header->flags |= MAD_FLAG_LSF_EXT;
else if (header->flags & MAD_FLAG_MPEG_2_5_EXT) {
stream->error = MAD_ERROR_LOSTSYNC;
return -1;
}
/* layer */
header->layer = 4 - mad_bit_read(&stream->ptr, 2);
if (header->layer == 4) {
stream->error = MAD_ERROR_BADLAYER;
return -1;
}
/* protection_bit */
if (mad_bit_read(&stream->ptr, 1) == 0) {
header->flags |= MAD_FLAG_PROTECTION;
header->crc_check = mad_bit_crc(stream->ptr, 16, 0xffff);
}
/* bitrate_index */
index = mad_bit_read(&stream->ptr, 4);
if (index == 15) {
stream->error = MAD_ERROR_BADBITRATE;
return -1;
}
if (header->flags & MAD_FLAG_LSF_EXT)
header->bitrate = bitrate_table[3 + (header->layer >> 1)][index];
else
header->bitrate = bitrate_table[header->layer - 1][index];
/* sampling_frequency */
index = mad_bit_read(&stream->ptr, 2);
if (index == 3) {
stream->error = MAD_ERROR_BADSAMPLERATE;
return -1;
}
header->samplerate = samplerate_table[index];
if (header->flags & MAD_FLAG_LSF_EXT) {
header->samplerate /= 2;
if (header->flags & MAD_FLAG_MPEG_2_5_EXT)
header->samplerate /= 2;
}
/* padding_bit */
if (mad_bit_read(&stream->ptr, 1))
header->flags |= MAD_FLAG_PADDING;
/* private_bit */
if (mad_bit_read(&stream->ptr, 1))
header->private_bits |= MAD_PRIVATE_HEADER;
/* mode */
header->mode = 3 - mad_bit_read(&stream->ptr, 2);
/* mode_extension */
header->mode_extension = mad_bit_read(&stream->ptr, 2);
/* copyright */
if (mad_bit_read(&stream->ptr, 1))
header->flags |= MAD_FLAG_COPYRIGHT;
/* original/copy */
if (mad_bit_read(&stream->ptr, 1))
header->flags |= MAD_FLAG_ORIGINAL;
/* emphasis */
header->emphasis = mad_bit_read(&stream->ptr, 2);
# if defined(OPT_STRICT)
/*
* ISO/IEC 11172-3 says this is a reserved emphasis value, but
* streams exist which use it anyway. Since the value is not important
* to the decoder proper, we allow it unless OPT_STRICT is defined.
*/
if (header->emphasis == MAD_EMPHASIS_RESERVED) {
stream->error = MAD_ERROR_BADEMPHASIS;
return -1;
}
# endif
/* error_check() */
/* crc_check */
if (header->flags & MAD_FLAG_PROTECTION)
header->crc_target = mad_bit_read(&stream->ptr, 16);
return 0;
}
/*
* NAME: free_bitrate()
* DESCRIPTION: attempt to discover the bitstream's free bitrate
*/
static
int free_bitrate(struct mad_stream *stream, struct mad_header const *header)
{
struct mad_bitptr keep_ptr;
unsigned long rate = 0;
unsigned int pad_slot, slots_per_frame;
unsigned char const *ptr = 0;
keep_ptr = stream->ptr;
pad_slot = (header->flags & MAD_FLAG_PADDING) ? 1 : 0;
slots_per_frame = (header->layer == MAD_LAYER_III &&
(header->flags & MAD_FLAG_LSF_EXT)) ? 72 : 144;
while (mad_stream_sync(stream) == 0) {
struct mad_stream peek_stream;
struct mad_header peek_header;
peek_stream = *stream;
peek_header = *header;
if (decode_header(&peek_header, &peek_stream) == 0 &&
peek_header.layer == header->layer &&
peek_header.samplerate == header->samplerate) {
unsigned int N;
ptr = mad_bit_nextbyte(&stream->ptr);
N = ptr - stream->this_frame;
if (header->layer == MAD_LAYER_I) {
rate = (unsigned long) header->samplerate *
(N - 4 * pad_slot + 4) / 48 / 1000;
}
else {
rate = (unsigned long) header->samplerate *
(N - pad_slot + 1) / slots_per_frame / 1000;
}
if (rate >= 8)
break;
}
mad_bit_skip(&stream->ptr, 8);
}
stream->ptr = keep_ptr;
if (rate < 8 || (header->layer == MAD_LAYER_III && rate > 640)) {
stream->error = MAD_ERROR_LOSTSYNC;
return -1;
}
stream->freerate = rate * 1000;
return 0;
}
/*
* NAME: header->decode()
* DESCRIPTION: read the next frame header from the stream
*/
int mad_header_decode(struct mad_header *header, struct mad_stream *stream)
{
register unsigned char const *ptr, *end;
unsigned int pad_slot, N;
ptr = stream->next_frame;
end = stream->bufend;
if (ptr == 0) {
stream->error = MAD_ERROR_BUFPTR;
goto fail;
}
/* stream skip */
if (stream->skiplen) {
if (!stream->sync)
ptr = stream->this_frame;
if (end - ptr < stream->skiplen) {
stream->skiplen -= end - ptr;
stream->next_frame = end;
stream->error = MAD_ERROR_BUFLEN;
goto fail;
}
ptr += stream->skiplen;
stream->skiplen = 0;
stream->sync = 1;
}
sync:
/* synchronize */
if (stream->sync) {
if (end - ptr < MAD_BUFFER_GUARD) {
stream->next_frame = ptr;
stream->error = MAD_ERROR_BUFLEN;
goto fail;
}
else if (!(ptr[0] == 0xff && (ptr[1] & 0xe0) == 0xe0)) {
/* mark point where frame sync word was expected */
stream->this_frame = ptr;
stream->next_frame = ptr + 1;
stream->error = MAD_ERROR_LOSTSYNC;
goto fail;
}
}
else {
mad_bit_init(&stream->ptr, ptr);
if (mad_stream_sync(stream) == -1) {
if (end - stream->next_frame >= MAD_BUFFER_GUARD)
stream->next_frame = end - MAD_BUFFER_GUARD;
stream->error = MAD_ERROR_BUFLEN;
goto fail;
}
ptr = mad_bit_nextbyte(&stream->ptr);
}
/* begin processing */
stream->this_frame = ptr;
stream->next_frame = ptr + 1; /* possibly bogus sync word */
mad_bit_init(&stream->ptr, stream->this_frame);
if (decode_header(header, stream) == -1)
goto fail;
/* calculate frame duration */
mad_timer_set(&header->duration, 0,
32 * MAD_NSBSAMPLES(header), header->samplerate);
/* calculate free bit rate */
if (header->bitrate == 0) {
if ((stream->freerate == 0 || !stream->sync ||
(header->layer == MAD_LAYER_III && stream->freerate > 640000)) &&
free_bitrate(stream, header) == -1)
goto fail;
header->bitrate = stream->freerate;
header->flags |= MAD_FLAG_FREEFORMAT;
}
/* calculate beginning of next frame */
pad_slot = (header->flags & MAD_FLAG_PADDING) ? 1 : 0;
if (header->layer == MAD_LAYER_I)
N = ((12 * header->bitrate / header->samplerate) + pad_slot) * 4;
else {
unsigned int slots_per_frame;
slots_per_frame = (header->layer == MAD_LAYER_III &&
(header->flags & MAD_FLAG_LSF_EXT)) ? 72 : 144;
N = (slots_per_frame * header->bitrate / header->samplerate) + pad_slot;
}
/* verify there is enough data left in buffer to decode this frame */
if (N + MAD_BUFFER_GUARD > end - stream->this_frame) {
stream->next_frame = stream->this_frame;
stream->error = MAD_ERROR_BUFLEN;
goto fail;
}
stream->next_frame = stream->this_frame + N;
if (!stream->sync) {
/* check that a valid frame header follows this frame */
ptr = stream->next_frame;
if (!(ptr[0] == 0xff && (ptr[1] & 0xe0) == 0xe0)) {
ptr = stream->next_frame = stream->this_frame + 1;
goto sync;
}
stream->sync = 1;
}
header->flags |= MAD_FLAG_INCOMPLETE;
return 0;
fail:
stream->sync = 0;
return -1;
}
/*
* NAME: frame->decode()
* DESCRIPTION: decode a single frame from a bitstream
*/
int mad_frame_decode(struct mad_frame *frame, struct mad_stream *stream)
{
frame->options = stream->options;
/* header() */
/* error_check() */
if (!(frame->header.flags & MAD_FLAG_INCOMPLETE) &&
mad_header_decode(&frame->header, stream) == -1)
goto fail;
/* audio_data() */
frame->header.flags &= ~MAD_FLAG_INCOMPLETE;
if (decoder_table[frame->header.layer - 1](stream, frame) == -1) {
if (!MAD_RECOVERABLE(stream->error))
stream->next_frame = stream->this_frame;
goto fail;
}
/* ancillary_data() */
if (frame->header.layer != MAD_LAYER_III) {
struct mad_bitptr next_frame;
mad_bit_init(&next_frame, stream->next_frame);
stream->anc_ptr = stream->ptr;
stream->anc_bitlen = mad_bit_length(&stream->ptr, &next_frame);
mad_bit_finish(&next_frame);
}
return 0;
fail:
stream->anc_bitlen = 0;
return -1;
}
/*
* NAME: frame->mute()
* DESCRIPTION: zero all subband values so the frame becomes silent
*/
void mad_frame_mute(struct mad_frame *frame)
{
unsigned int s, sb;
for (s = 0; s < 36; ++s) {
for (sb = 0; sb < 32; ++sb) {
frame->sbsample[0][s][sb] =
frame->sbsample[1][s][sb] = 0;
}
}
if (frame->overlap) {
for (s = 0; s < 18; ++s) {
for (sb = 0; sb < 32; ++sb) {
(*frame->overlap)[0][sb][s] =
(*frame->overlap)[1][sb][s] = 0;
}
}
}
}
--- NEW FILE: qc_table.dat ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2001 Robert Leslie
*
* 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
*
* $Id: qc_table.dat,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
/*
* These are the Layer II classes of quantization.
* The table is derived from Table B.4 of ISO/IEC 11172-3.
*/
{ 3, 2, 5,
MAD_F(0x15555555) /* 1.33333333333 => 1.33333333209, e 0.00000000124 */,
MAD_F(0x08000000) /* 0.50000000000 => 0.50000000000, e 0.00000000000 */ },
{ 5, 3, 7,
MAD_F(0x1999999a) /* 1.60000000000 => 1.60000000149, e -0.00000000149 */,
MAD_F(0x08000000) /* 0.50000000000 => 0.50000000000, e 0.00000000000 */ },
{ 7, 0, 3,
MAD_F(0x12492492) /* 1.14285714286 => 1.14285714179, e 0.00000000107 */,
MAD_F(0x04000000) /* 0.25000000000 => 0.25000000000, e 0.00000000000 */ },
{ 9, 4, 10,
MAD_F(0x1c71c71c) /* 1.77777777777 => 1.77777777612, e 0.00000000165 */,
MAD_F(0x08000000) /* 0.50000000000 => 0.50000000000, e 0.00000000000 */ },
{ 15, 0, 4,
MAD_F(0x11111111) /* 1.06666666666 => 1.06666666642, e 0.00000000024 */,
MAD_F(0x02000000) /* 0.12500000000 => 0.12500000000, e 0.00000000000 */ },
{ 31, 0, 5,
MAD_F(0x10842108) /* 1.03225806452 => 1.03225806355, e 0.00000000097 */,
MAD_F(0x01000000) /* 0.06250000000 => 0.06250000000, e 0.00000000000 */ },
{ 63, 0, 6,
MAD_F(0x10410410) /* 1.01587301587 => 1.01587301493, e 0.00000000094 */,
MAD_F(0x00800000) /* 0.03125000000 => 0.03125000000, e 0.00000000000 */ },
{ 127, 0, 7,
MAD_F(0x10204081) /* 1.00787401575 => 1.00787401572, e 0.00000000003 */,
MAD_F(0x00400000) /* 0.01562500000 => 0.01562500000, e 0.00000000000 */ },
{ 255, 0, 8,
MAD_F(0x10101010) /* 1.00392156863 => 1.00392156839, e 0.00000000024 */,
MAD_F(0x00200000) /* 0.00781250000 => 0.00781250000, e 0.00000000000 */ },
{ 511, 0, 9,
MAD_F(0x10080402) /* 1.00195694716 => 1.00195694715, e 0.00000000001 */,
MAD_F(0x00100000) /* 0.00390625000 => 0.00390625000, e 0.00000000000 */ },
{ 1023, 0, 10,
MAD_F(0x10040100) /* 1.00097751711 => 1.00097751617, e 0.00000000094 */,
MAD_F(0x00080000) /* 0.00195312500 => 0.00195312500, e 0.00000000000 */ },
{ 2047, 0, 11,
MAD_F(0x10020040) /* 1.00048851979 => 1.00048851967, e 0.00000000012 */,
MAD_F(0x00040000) /* 0.00097656250 => 0.00097656250, e 0.00000000000 */ },
{ 4095, 0, 12,
MAD_F(0x10010010) /* 1.00024420024 => 1.00024420023, e 0.00000000001 */,
MAD_F(0x00020000) /* 0.00048828125 => 0.00048828125, e 0.00000000000 */ },
{ 8191, 0, 13,
MAD_F(0x10008004) /* 1.00012208522 => 1.00012208521, e 0.00000000001 */,
MAD_F(0x00010000) /* 0.00024414063 => 0.00024414062, e 0.00000000000 */ },
{ 16383, 0, 14,
MAD_F(0x10004001) /* 1.00006103888 => 1.00006103888, e -0.00000000000 */,
MAD_F(0x00008000) /* 0.00012207031 => 0.00012207031, e -0.00000000000 */ },
{ 32767, 0, 15,
MAD_F(0x10002000) /* 1.00003051851 => 1.00003051758, e 0.00000000093 */,
MAD_F(0x00004000) /* 0.00006103516 => 0.00006103516, e 0.00000000000 */ },
{ 65535, 0, 16,
MAD_F(0x10001000) /* 1.00001525902 => 1.00001525879, e 0.00000000023 */,
MAD_F(0x00002000) /* 0.00003051758 => 0.00003051758, e 0.00000000000 */ }
--- NEW FILE: stream.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: stream.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_STREAM_H
# define LIBMAD_STREAM_H
# include "bit.h"
# define MAD_BUFFER_GUARD 8
# define MAD_BUFFER_MDLEN (511 + 2048 + MAD_BUFFER_GUARD)
enum mad_error {
MAD_ERROR_NONE = 0x0000, /* no error */
MAD_ERROR_BUFLEN = 0x0001, /* input buffer too small (or EOF) */
MAD_ERROR_BUFPTR = 0x0002, /* invalid (null) buffer pointer */
MAD_ERROR_NOMEM = 0x0031, /* not enough memory */
MAD_ERROR_LOSTSYNC = 0x0101, /* lost synchronization */
MAD_ERROR_BADLAYER = 0x0102, /* reserved header layer value */
MAD_ERROR_BADBITRATE = 0x0103, /* forbidden bitrate value */
MAD_ERROR_BADSAMPLERATE = 0x0104, /* reserved sample frequency value */
MAD_ERROR_BADEMPHASIS = 0x0105, /* reserved emphasis value */
MAD_ERROR_BADCRC = 0x0201, /* CRC check failed */
MAD_ERROR_BADBITALLOC = 0x0211, /* forbidden bit allocation value */
MAD_ERROR_BADSCALEFACTOR = 0x0221, /* bad scalefactor index */
MAD_ERROR_BADMODE = 0x0222, /* bad bitrate/mode combination */
MAD_ERROR_BADFRAMELEN = 0x0231, /* bad frame length */
MAD_ERROR_BADBIGVALUES = 0x0232, /* bad big_values count */
MAD_ERROR_BADBLOCKTYPE = 0x0233, /* reserved block_type */
MAD_ERROR_BADSCFSI = 0x0234, /* bad scalefactor selection info */
MAD_ERROR_BADDATAPTR = 0x0235, /* bad main_data_begin pointer */
MAD_ERROR_BADPART3LEN = 0x0236, /* bad audio data length */
MAD_ERROR_BADHUFFTABLE = 0x0237, /* bad Huffman table select */
MAD_ERROR_BADHUFFDATA = 0x0238, /* Huffman data overrun */
MAD_ERROR_BADSTEREO = 0x0239 /* incompatible block_type for JS */
};
# define MAD_RECOVERABLE(error) ((error) & 0xff00)
struct mad_stream {
unsigned char const *buffer; /* input bitstream buffer */
unsigned char const *bufend; /* end of buffer */
unsigned long skiplen; /* bytes to skip before next frame */
int sync; /* stream sync found */
unsigned long freerate; /* free bitrate (fixed) */
unsigned char const *this_frame; /* start of current frame */
unsigned char const *next_frame; /* start of next frame */
struct mad_bitptr ptr; /* current processing bit pointer */
struct mad_bitptr anc_ptr; /* ancillary bits pointer */
unsigned int anc_bitlen; /* number of ancillary bits */
unsigned char (*main_data)[MAD_BUFFER_MDLEN];
/* Layer III main_data() */
unsigned int md_len; /* bytes in main_data */
int options; /* decoding options (see below) */
enum mad_error error; /* error code (see above) */
};
enum {
MAD_OPTION_IGNORECRC = 0x0001, /* ignore CRC errors */
MAD_OPTION_HALFSAMPLERATE = 0x0002 /* generate PCM at 1/2 sample rate */
# if 0 /* not yet implemented */
MAD_OPTION_LEFTCHANNEL = 0x0010, /* decode left channel only */
MAD_OPTION_RIGHTCHANNEL = 0x0020, /* decode right channel only */
MAD_OPTION_SINGLECHANNEL = 0x0030 /* combine channels */
# endif
};
void mad_stream_init(struct mad_stream *);
void mad_stream_finish(struct mad_stream *);
# define mad_stream_options(stream, opts) \
((void) ((stream)->options = (opts)))
void mad_stream_buffer(struct mad_stream *,
unsigned char const *, unsigned long);
void mad_stream_skip(struct mad_stream *, unsigned long);
int mad_stream_sync(struct mad_stream *);
char const *mad_stream_errorstr(struct mad_stream const *);
# endif
--- NEW FILE: timer.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: timer.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdio.h>
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "timer.h"
mad_timer_t const mad_timer_zero = { 0, 0 };
/*
* NAME: timer->compare()
* DESCRIPTION: indicate relative order of two timers
*/
int mad_timer_compare(mad_timer_t timer1, mad_timer_t timer2)
{
signed long diff;
diff = timer1.seconds - timer2.seconds;
if (diff < 0)
return -1;
else if (diff > 0)
return +1;
diff = timer1.fraction - timer2.fraction;
if (diff < 0)
return -1;
else if (diff > 0)
return +1;
return 0;
}
/*
* NAME: timer->negate()
* DESCRIPTION: invert the sign of a timer
*/
void mad_timer_negate(mad_timer_t *timer)
{
timer->seconds = -timer->seconds;
if (timer->fraction) {
timer->seconds -= 1;
timer->fraction = MAD_TIMER_RESOLUTION - timer->fraction;
}
}
/*
* NAME: timer->abs()
* DESCRIPTION: return the absolute value of a timer
*/
mad_timer_t mad_timer_abs(mad_timer_t timer)
{
if (timer.seconds < 0)
mad_timer_negate(&timer);
return timer;
}
/*
* NAME: reduce_timer()
* DESCRIPTION: carry timer fraction into seconds
*/
static
void reduce_timer(mad_timer_t *timer)
{
timer->seconds += timer->fraction / MAD_TIMER_RESOLUTION;
timer->fraction %= MAD_TIMER_RESOLUTION;
}
/*
* NAME: gcd()
* DESCRIPTION: compute greatest common denominator
*/
static
unsigned long gcd(unsigned long num1, unsigned long num2)
{
unsigned long tmp;
while (num2) {
tmp = num2;
num2 = num1 % num2;
num1 = tmp;
}
return num1;
}
/*
* NAME: reduce_rational()
* DESCRIPTION: convert rational expression to lowest terms
*/
static
void reduce_rational(unsigned long *numer, unsigned long *denom)
{
unsigned long factor;
factor = gcd(*numer, *denom);
assert(factor != 0);
*numer /= factor;
*denom /= factor;
}
/*
* NAME: scale_rational()
* DESCRIPTION: solve numer/denom == ?/scale avoiding overflowing
*/
static
unsigned long scale_rational(unsigned long numer, unsigned long denom,
unsigned long scale)
{
reduce_rational(&numer, &denom);
reduce_rational(&scale, &denom);
assert(denom != 0);
if (denom < scale)
return numer * (scale / denom) + numer * (scale % denom) / denom;
if (denom < numer)
return scale * (numer / denom) + scale * (numer % denom) / denom;
return numer * scale / denom;
}
/*
* NAME: timer->set()
* DESCRIPTION: set timer to specific (positive) value
*/
void mad_timer_set(mad_timer_t *timer, unsigned long seconds,
unsigned long numer, unsigned long denom)
{
timer->seconds = seconds;
if (numer >= denom && denom > 0) {
timer->seconds += numer / denom;
numer %= denom;
}
switch (denom) {
case 0:
case 1:
timer->fraction = 0;
break;
case MAD_TIMER_RESOLUTION:
timer->fraction = numer;
break;
case 1000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 1000);
break;
case 8000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 8000);
break;
case 11025:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 11025);
break;
case 12000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 12000);
break;
case 16000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 16000);
break;
case 22050:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 22050);
break;
case 24000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 24000);
break;
case 32000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 32000);
break;
case 44100:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 44100);
break;
case 48000:
timer->fraction = numer * (MAD_TIMER_RESOLUTION / 48000);
break;
default:
timer->fraction = scale_rational(numer, denom, MAD_TIMER_RESOLUTION);
break;
}
if (timer->fraction >= MAD_TIMER_RESOLUTION)
reduce_timer(timer);
}
/*
* NAME: timer->add()
* DESCRIPTION: add one timer to another
*/
void mad_timer_add(mad_timer_t *timer, mad_timer_t incr)
{
timer->seconds += incr.seconds;
timer->fraction += incr.fraction;
if (timer->fraction >= MAD_TIMER_RESOLUTION)
reduce_timer(timer);
}
/*
* NAME: timer->multiply()
* DESCRIPTION: multiply a timer by a scalar value
*/
void mad_timer_multiply(mad_timer_t *timer, signed long scalar)
{
mad_timer_t addend;
unsigned long factor;
factor = scalar;
if (scalar < 0) {
factor = -scalar;
mad_timer_negate(timer);
}
addend = *timer;
*timer = mad_timer_zero;
while (factor) {
if (factor & 1)
mad_timer_add(timer, addend);
mad_timer_add(&addend, addend);
factor >>= 1;
}
}
/*
* NAME: timer->count()
* DESCRIPTION: return timer value in selected units
*/
signed long mad_timer_count(mad_timer_t timer, enum mad_units units)
{
switch (units) {
case MAD_UNITS_HOURS:
return timer.seconds / 60 / 60;
case MAD_UNITS_MINUTES:
return timer.seconds / 60;
case MAD_UNITS_SECONDS:
return timer.seconds;
case MAD_UNITS_DECISECONDS:
case MAD_UNITS_CENTISECONDS:
case MAD_UNITS_MILLISECONDS:
case MAD_UNITS_8000_HZ:
case MAD_UNITS_11025_HZ:
case MAD_UNITS_12000_HZ:
case MAD_UNITS_16000_HZ:
case MAD_UNITS_22050_HZ:
case MAD_UNITS_24000_HZ:
case MAD_UNITS_32000_HZ:
case MAD_UNITS_44100_HZ:
case MAD_UNITS_48000_HZ:
case MAD_UNITS_24_FPS:
case MAD_UNITS_25_FPS:
case MAD_UNITS_30_FPS:
case MAD_UNITS_48_FPS:
case MAD_UNITS_50_FPS:
case MAD_UNITS_60_FPS:
case MAD_UNITS_75_FPS:
return timer.seconds * (signed long) units +
(signed long) scale_rational(timer.fraction, MAD_TIMER_RESOLUTION,
units);
case MAD_UNITS_23_976_FPS:
case MAD_UNITS_24_975_FPS:
case MAD_UNITS_29_97_FPS:
case MAD_UNITS_47_952_FPS:
case MAD_UNITS_49_95_FPS:
case MAD_UNITS_59_94_FPS:
return (mad_timer_count(timer, -units) + 1) * 1000 / 1001;
}
/* unsupported units */
return 0;
}
/*
* NAME: timer->fraction()
* DESCRIPTION: return fractional part of timer in arbitrary terms
*/
unsigned long mad_timer_fraction(mad_timer_t timer, unsigned long denom)
{
timer = mad_timer_abs(timer);
switch (denom) {
case 0:
return timer.fraction ?
MAD_TIMER_RESOLUTION / timer.fraction : MAD_TIMER_RESOLUTION + 1;
case MAD_TIMER_RESOLUTION:
return timer.fraction;
default:
return scale_rational(timer.fraction, MAD_TIMER_RESOLUTION, denom);
}
}
/*
* NAME: timer->string()
* DESCRIPTION: write a string representation of a timer using a template
*/
void mad_timer_string(mad_timer_t timer,
char *dest, char const *format, enum mad_units units,
enum mad_units fracunits, unsigned long subparts)
{
unsigned long hours, minutes, seconds, sub;
unsigned int frac;
timer = mad_timer_abs(timer);
seconds = timer.seconds;
frac = sub = 0;
switch (fracunits) {
case MAD_UNITS_HOURS:
case MAD_UNITS_MINUTES:
case MAD_UNITS_SECONDS:
break;
case MAD_UNITS_DECISECONDS:
case MAD_UNITS_CENTISECONDS:
case MAD_UNITS_MILLISECONDS:
case MAD_UNITS_8000_HZ:
case MAD_UNITS_11025_HZ:
case MAD_UNITS_12000_HZ:
case MAD_UNITS_16000_HZ:
case MAD_UNITS_22050_HZ:
case MAD_UNITS_24000_HZ:
case MAD_UNITS_32000_HZ:
case MAD_UNITS_44100_HZ:
case MAD_UNITS_48000_HZ:
case MAD_UNITS_24_FPS:
case MAD_UNITS_25_FPS:
case MAD_UNITS_30_FPS:
case MAD_UNITS_48_FPS:
case MAD_UNITS_50_FPS:
case MAD_UNITS_60_FPS:
case MAD_UNITS_75_FPS:
{
unsigned long denom;
denom = MAD_TIMER_RESOLUTION / fracunits;
frac = timer.fraction / denom;
sub = scale_rational(timer.fraction % denom, denom, subparts);
}
break;
case MAD_UNITS_23_976_FPS:
case MAD_UNITS_24_975_FPS:
case MAD_UNITS_29_97_FPS:
case MAD_UNITS_47_952_FPS:
case MAD_UNITS_49_95_FPS:
case MAD_UNITS_59_94_FPS:
/* drop-frame encoding */
/* N.B. this is only well-defined for MAD_UNITS_29_97_FPS */
{
unsigned long frame, cycle, d, m;
frame = mad_timer_count(timer, fracunits);
cycle = -fracunits * 60 * 10 - (10 - 1) * 2;
d = frame / cycle;
m = frame % cycle;
frame += (10 - 1) * 2 * d;
if (m > 2)
frame += 2 * ((m - 2) / (cycle / 10));
frac = frame % -fracunits;
seconds = frame / -fracunits;
}
break;
}
switch (units) {
case MAD_UNITS_HOURS:
minutes = seconds / 60;
hours = minutes / 60;
sprintf(dest, format,
hours,
(unsigned int) (minutes % 60),
(unsigned int) (seconds % 60),
frac, sub);
break;
case MAD_UNITS_MINUTES:
minutes = seconds / 60;
sprintf(dest, format,
minutes,
(unsigned int) (seconds % 60),
frac, sub);
break;
case MAD_UNITS_SECONDS:
sprintf(dest, format,
seconds,
frac, sub);
break;
case MAD_UNITS_23_976_FPS:
case MAD_UNITS_24_975_FPS:
case MAD_UNITS_29_97_FPS:
case MAD_UNITS_47_952_FPS:
case MAD_UNITS_49_95_FPS:
case MAD_UNITS_59_94_FPS:
if (fracunits < 0) {
/* not yet implemented */
sub = 0;
}
/* fall through */
case MAD_UNITS_DECISECONDS:
case MAD_UNITS_CENTISECONDS:
case MAD_UNITS_MILLISECONDS:
case MAD_UNITS_8000_HZ:
case MAD_UNITS_11025_HZ:
case MAD_UNITS_12000_HZ:
case MAD_UNITS_16000_HZ:
case MAD_UNITS_22050_HZ:
case MAD_UNITS_24000_HZ:
case MAD_UNITS_32000_HZ:
case MAD_UNITS_44100_HZ:
case MAD_UNITS_48000_HZ:
case MAD_UNITS_24_FPS:
case MAD_UNITS_25_FPS:
case MAD_UNITS_30_FPS:
case MAD_UNITS_48_FPS:
case MAD_UNITS_50_FPS:
case MAD_UNITS_60_FPS:
case MAD_UNITS_75_FPS:
sprintf(dest, format, mad_timer_count(timer, units), sub);
break;
}
}
--- NEW FILE: frame.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: frame.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_FRAME_H
# define LIBMAD_FRAME_H
# include "fixed.h"
# include "timer.h"
# include "stream.h"
enum mad_layer {
MAD_LAYER_I = 1, /* Layer I */
MAD_LAYER_II = 2, /* Layer II */
MAD_LAYER_III = 3 /* Layer III */
};
enum mad_mode {
MAD_MODE_SINGLE_CHANNEL = 0, /* single channel */
MAD_MODE_DUAL_CHANNEL = 1, /* dual channel */
MAD_MODE_JOINT_STEREO = 2, /* joint (MS/intensity) stereo */
MAD_MODE_STEREO = 3 /* normal LR stereo */
};
enum mad_emphasis {
MAD_EMPHASIS_NONE = 0, /* no emphasis */
MAD_EMPHASIS_50_15_US = 1, /* 50/15 microseconds emphasis */
MAD_EMPHASIS_CCITT_J_17 = 3, /* CCITT J.17 emphasis */
MAD_EMPHASIS_RESERVED = 2 /* unknown emphasis */
};
struct mad_header {
enum mad_layer layer; /* audio layer (1, 2, or 3) */
enum mad_mode mode; /* channel mode (see above) */
int mode_extension; /* additional mode info */
enum mad_emphasis emphasis; /* de-emphasis to use (see above) */
unsigned long bitrate; /* stream bitrate (bps) */
unsigned int samplerate; /* sampling frequency (Hz) */
unsigned short crc_check; /* frame CRC accumulator */
unsigned short crc_target; /* final target CRC checksum */
int flags; /* flags (see below) */
int private_bits; /* private bits (see below) */
mad_timer_t duration; /* audio playing time of frame */
};
struct mad_frame {
struct mad_header header; /* MPEG audio header */
int options; /* decoding options (from stream) */
mad_fixed_t sbsample[2][36][32]; /* synthesis subband filter samples */
mad_fixed_t (*overlap)[2][32][18]; /* Layer III block overlap data */
};
# define MAD_NCHANNELS(header) ((header)->mode ? 2 : 1)
# define MAD_NSBSAMPLES(header) \
((header)->layer == MAD_LAYER_I ? 12 : \
(((header)->layer == MAD_LAYER_III && \
((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36))
enum {
MAD_FLAG_NPRIVATE_III = 0x0007, /* number of Layer III private bits */
MAD_FLAG_INCOMPLETE = 0x0008, /* header but not data is decoded */
MAD_FLAG_PROTECTION = 0x0010, /* frame has CRC protection */
MAD_FLAG_COPYRIGHT = 0x0020, /* frame is copyright */
MAD_FLAG_ORIGINAL = 0x0040, /* frame is original (else copy) */
MAD_FLAG_PADDING = 0x0080, /* frame has additional slot */
MAD_FLAG_I_STEREO = 0x0100, /* uses intensity joint stereo */
MAD_FLAG_MS_STEREO = 0x0200, /* uses middle/side joint stereo */
MAD_FLAG_FREEFORMAT = 0x0400, /* uses free format bitrate */
MAD_FLAG_LSF_EXT = 0x1000, /* lower sampling freq. extension */
MAD_FLAG_MC_EXT = 0x2000, /* multichannel audio extension */
MAD_FLAG_MPEG_2_5_EXT = 0x4000 /* MPEG 2.5 (unofficial) extension */
};
enum {
MAD_PRIVATE_HEADER = 0x0100, /* header private bit */
MAD_PRIVATE_III = 0x001f /* Layer III private bits (up to 5) */
};
void mad_header_init(struct mad_header *);
# define mad_header_finish(header) /* nothing */
int mad_header_decode(struct mad_header *, struct mad_stream *);
void mad_frame_init(struct mad_frame *);
void mad_frame_finish(struct mad_frame *);
int mad_frame_decode(struct mad_frame *, struct mad_stream *);
void mad_frame_mute(struct mad_frame *);
# endif
--- NEW FILE: timer.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: timer.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_TIMER_H
# define LIBMAD_TIMER_H
typedef struct {
signed long seconds; /* whole seconds */
unsigned long fraction; /* 1/MAD_TIMER_RESOLUTION seconds */
} mad_timer_t;
extern mad_timer_t const mad_timer_zero;
# define MAD_TIMER_RESOLUTION 352800000UL
enum mad_units {
MAD_UNITS_HOURS = -2,
MAD_UNITS_MINUTES = -1,
MAD_UNITS_SECONDS = 0,
/* metric units */
MAD_UNITS_DECISECONDS = 10,
MAD_UNITS_CENTISECONDS = 100,
MAD_UNITS_MILLISECONDS = 1000,
/* audio sample units */
MAD_UNITS_8000_HZ = 8000,
MAD_UNITS_11025_HZ = 11025,
MAD_UNITS_12000_HZ = 12000,
MAD_UNITS_16000_HZ = 16000,
MAD_UNITS_22050_HZ = 22050,
MAD_UNITS_24000_HZ = 24000,
MAD_UNITS_32000_HZ = 32000,
MAD_UNITS_44100_HZ = 44100,
MAD_UNITS_48000_HZ = 48000,
/* video frame/field units */
MAD_UNITS_24_FPS = 24,
MAD_UNITS_25_FPS = 25,
MAD_UNITS_30_FPS = 30,
MAD_UNITS_48_FPS = 48,
MAD_UNITS_50_FPS = 50,
MAD_UNITS_60_FPS = 60,
/* CD audio frames */
MAD_UNITS_75_FPS = 75,
/* video drop-frame units */
MAD_UNITS_23_976_FPS = -24,
MAD_UNITS_24_975_FPS = -25,
MAD_UNITS_29_97_FPS = -30,
MAD_UNITS_47_952_FPS = -48,
MAD_UNITS_49_95_FPS = -50,
MAD_UNITS_59_94_FPS = -60
};
# define mad_timer_reset(timer) ((void) (*(timer) = mad_timer_zero))
int mad_timer_compare(mad_timer_t, mad_timer_t);
# define mad_timer_sign(timer) mad_timer_compare((timer), mad_timer_zero)
void mad_timer_negate(mad_timer_t *);
mad_timer_t mad_timer_abs(mad_timer_t);
void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long);
void mad_timer_add(mad_timer_t *, mad_timer_t);
void mad_timer_multiply(mad_timer_t *, signed long);
signed long mad_timer_count(mad_timer_t, enum mad_units);
unsigned long mad_timer_fraction(mad_timer_t, unsigned long);
void mad_timer_string(mad_timer_t, char *, char const *,
enum mad_units, enum mad_units, unsigned long);
# endif
--- NEW FILE: stream.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: stream.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include "bit.h"
# include "stream.h"
/*
* NAME: stream->init()
* DESCRIPTION: initialize stream struct
*/
void mad_stream_init(struct mad_stream *stream)
{
stream->buffer = 0;
stream->bufend = 0;
stream->skiplen = 0;
stream->sync = 0;
stream->freerate = 0;
stream->this_frame = 0;
stream->next_frame = 0;
mad_bit_init(&stream->ptr, 0);
mad_bit_init(&stream->anc_ptr, 0);
stream->anc_bitlen = 0;
stream->main_data = 0;
stream->md_len = 0;
stream->options = 0;
stream->error = MAD_ERROR_NONE;
}
/*
* NAME: stream->finish()
* DESCRIPTION: deallocate any dynamic memory associated with stream
*/
void mad_stream_finish(struct mad_stream *stream)
{
if (stream->main_data) {
free(stream->main_data);
stream->main_data = 0;
}
mad_bit_finish(&stream->anc_ptr);
mad_bit_finish(&stream->ptr);
}
/*
* NAME: stream->buffer()
* DESCRIPTION: set stream buffer pointers
*/
void mad_stream_buffer(struct mad_stream *stream,
unsigned char const *buffer, unsigned long length)
{
stream->buffer = buffer;
stream->bufend = buffer + length;
stream->this_frame = buffer;
stream->next_frame = buffer;
stream->sync = 1;
mad_bit_init(&stream->ptr, buffer);
}
/*
* NAME: stream->skip()
* DESCRIPTION: arrange to skip bytes before the next frame
*/
void mad_stream_skip(struct mad_stream *stream, unsigned long length)
{
stream->skiplen += length;
}
/*
* NAME: stream->sync()
* DESCRIPTION: locate the next stream sync word
*/
int mad_stream_sync(struct mad_stream *stream)
{
register unsigned char const *ptr, *end;
ptr = mad_bit_nextbyte(&stream->ptr);
end = stream->bufend;
while (ptr < end - 1 &&
!(ptr[0] == 0xff && (ptr[1] & 0xe0) == 0xe0))
++ptr;
if (end - ptr < MAD_BUFFER_GUARD)
return -1;
mad_bit_init(&stream->ptr, ptr);
return 0;
}
/*
* NAME: stream->errorstr()
* DESCRIPTION: return a string description of the current error condition
*/
char const *mad_stream_errorstr(struct mad_stream const *stream)
{
switch (stream->error) {
case MAD_ERROR_NONE: return "no error";
case MAD_ERROR_BUFLEN: return "input buffer too small (or EOF)";
case MAD_ERROR_BUFPTR: return "invalid (null) buffer pointer";
case MAD_ERROR_NOMEM: return "not enough memory";
case MAD_ERROR_LOSTSYNC: return "lost synchronization";
case MAD_ERROR_BADLAYER: return "reserved header layer value";
case MAD_ERROR_BADBITRATE: return "forbidden bitrate value";
case MAD_ERROR_BADSAMPLERATE: return "reserved sample frequency value";
case MAD_ERROR_BADEMPHASIS: return "reserved emphasis value";
case MAD_ERROR_BADCRC: return "CRC check failed";
case MAD_ERROR_BADBITALLOC: return "forbidden bit allocation value";
case MAD_ERROR_BADSCALEFACTOR: return "bad scalefactor index";
case MAD_ERROR_BADMODE: return "bad bitrate/mode combination";
case MAD_ERROR_BADFRAMELEN: return "bad frame length";
case MAD_ERROR_BADBIGVALUES: return "bad big_values count";
case MAD_ERROR_BADBLOCKTYPE: return "reserved block_type";
case MAD_ERROR_BADSCFSI: return "bad scalefactor selection info";
case MAD_ERROR_BADDATAPTR: return "bad main_data_begin pointer";
case MAD_ERROR_BADPART3LEN: return "bad audio data length";
case MAD_ERROR_BADHUFFTABLE: return "bad Huffman table select";
case MAD_ERROR_BADHUFFDATA: return "Huffman data overrun";
case MAD_ERROR_BADSTEREO: return "incompatible block_type for JS";
}
return 0;
}
--- NEW FILE: huffman.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: huffman.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_HUFFMAN_H
# define LIBMAD_HUFFMAN_H
union huffquad {
struct {
unsigned short final : 1;
unsigned short bits : 3;
unsigned short offset : 12;
} ptr;
struct {
unsigned short final : 1;
unsigned short hlen : 3;
unsigned short v : 1;
unsigned short w : 1;
unsigned short x : 1;
unsigned short y : 1;
} value;
unsigned short final : 1;
};
union huffpair {
struct {
unsigned short final : 1;
unsigned short bits : 3;
unsigned short offset : 12;
} ptr;
struct {
unsigned short final : 1;
unsigned short hlen : 3;
unsigned short x : 4;
unsigned short y : 4;
} value;
unsigned short final : 1;
};
struct hufftable {
union huffpair const *table;
unsigned short linbits;
unsigned short startbits;
};
extern union huffquad const *const mad_huff_quad_table[2];
extern struct hufftable const mad_huff_pair_table[32];
# endif
--- NEW FILE: rq_table.dat ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2001 Robert Leslie
*
* 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
*
* $Id: rq_table.dat,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
[...8708 lines suppressed...]
/* 8188 */ { MAD_F(0x050951bc) /* 0.314775214 */, 19 },
/* 8189 */ { MAD_F(0x0509877c) /* 0.314826473 */, 19 },
/* 8190 */ { MAD_F(0x0509bd3c) /* 0.314877734 */, 19 },
/* 8191 */ { MAD_F(0x0509f2fd) /* 0.314928997 */, 19 },
/* 8192 */ { MAD_F(0x050a28be) /* 0.314980262 */, 19 },
/* 8193 */ { MAD_F(0x050a5e80) /* 0.315031530 */, 19 },
/* 8194 */ { MAD_F(0x050a9443) /* 0.315082799 */, 19 },
/* 8195 */ { MAD_F(0x050aca06) /* 0.315134071 */, 19 },
/* 8196 */ { MAD_F(0x050affc9) /* 0.315185344 */, 19 },
/* 8197 */ { MAD_F(0x050b358e) /* 0.315236620 */, 19 },
/* 8198 */ { MAD_F(0x050b6b52) /* 0.315287898 */, 19 },
/* 8199 */ { MAD_F(0x050ba118) /* 0.315339178 */, 19 },
/* 8200 */ { MAD_F(0x050bd6de) /* 0.315390460 */, 19 },
/* 8201 */ { MAD_F(0x050c0ca4) /* 0.315441744 */, 19 },
/* 8202 */ { MAD_F(0x050c426b) /* 0.315493030 */, 19 },
/* 8203 */ { MAD_F(0x050c7833) /* 0.315544318 */, 19 },
/* 8204 */ { MAD_F(0x050cadfb) /* 0.315595608 */, 19 },
/* 8205 */ { MAD_F(0x050ce3c4) /* 0.315646901 */, 19 },
/* 8206 */ { MAD_F(0x050d198d) /* 0.315698195 */, 19 }
--- NEW FILE: fixed.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: fixed.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include "fixed.h"
/*
* NAME: fixed->abs()
* DESCRIPTION: return absolute value of a fixed-point number
*/
mad_fixed_t mad_f_abs(mad_fixed_t x)
{
return x < 0 ? -x : x;
}
/*
* NAME: fixed->div()
* DESCRIPTION: perform division using fixed-point math
*/
mad_fixed_t mad_f_div(mad_fixed_t x, mad_fixed_t y)
{
mad_fixed_t q, r;
unsigned int bits;
q = mad_f_abs(x / y);
if (x < 0) {
x = -x;
y = -y;
}
r = x % y;
if (y < 0) {
x = -x;
y = -y;
}
if (q > mad_f_intpart(MAD_F_MAX) &&
!(q == -mad_f_intpart(MAD_F_MIN) && r == 0 && (x < 0) != (y < 0)))
return 0;
for (bits = MAD_F_FRACBITS; bits && r; --bits) {
q <<= 1, r <<= 1;
if (r >= y)
r -= y, ++q;
}
/* round */
if (2 * r >= y)
++q;
/* fix sign */
if ((x < 0) != (y < 0))
q = -q;
return q << bits;
}
--- NEW FILE: huffman.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: huffman.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
[...3070 lines suppressed...]
/* 13 */ { hufftab13, 0, 4 },
/* 14 */ { 0 /* not used */ },
/* 15 */ { hufftab15, 0, 4 },
/* 16 */ { hufftab16, 1, 4 },
/* 17 */ { hufftab16, 2, 4 },
/* 18 */ { hufftab16, 3, 4 },
/* 19 */ { hufftab16, 4, 4 },
/* 20 */ { hufftab16, 6, 4 },
/* 21 */ { hufftab16, 8, 4 },
/* 22 */ { hufftab16, 10, 4 },
/* 23 */ { hufftab16, 13, 4 },
/* 24 */ { hufftab24, 4, 4 },
/* 25 */ { hufftab24, 5, 4 },
/* 26 */ { hufftab24, 6, 4 },
/* 27 */ { hufftab24, 7, 4 },
/* 28 */ { hufftab24, 8, 4 },
/* 29 */ { hufftab24, 9, 4 },
/* 30 */ { hufftab24, 11, 4 },
/* 31 */ { hufftab24, 13, 4 }
};
--- NEW FILE: sf_table.dat ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2001 Robert Leslie
*
* 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
*
* $Id: sf_table.dat,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
/*
* These are the scalefactor values for Layer I and Layer II.
* The values are from Table B.1 of ISO/IEC 11172-3.
*
* There is some error introduced by the 32-bit fixed-point representation;
* the amount of error is shown. For 16-bit PCM output, this shouldn't be
* too much of a problem.
*/
MAD_F(0x20000000), /* 2.000000000000 => 2.000000000000, e 0.000000000000 */
MAD_F(0x1965fea5), /* 1.587401051968 => 1.587401051074, e 0.000000000894 */
MAD_F(0x1428a2fa), /* 1.259921049895 => 1.259921051562, e -0.000000001667 */
MAD_F(0x10000000), /* 1.000000000000 => 1.000000000000, e 0.000000000000 */
MAD_F(0x0cb2ff53), /* 0.793700525984 => 0.793700527400, e -0.000000001416 */
MAD_F(0x0a14517d), /* 0.629960524947 => 0.629960525781, e -0.000000000833 */
MAD_F(0x08000000), /* 0.500000000000 => 0.500000000000, e 0.000000000000 */
MAD_F(0x06597fa9), /* 0.396850262992 => 0.396850261837, e 0.000000001155 */
MAD_F(0x050a28be), /* 0.314980262474 => 0.314980261028, e 0.000000001446 */
MAD_F(0x04000000), /* 0.250000000000 => 0.250000000000, e 0.000000000000 */
MAD_F(0x032cbfd5), /* 0.198425131496 => 0.198425132781, e -0.000000001285 */
MAD_F(0x0285145f), /* 0.157490131237 => 0.157490130514, e 0.000000000723 */
MAD_F(0x02000000), /* 0.125000000000 => 0.125000000000, e 0.000000000000 */
MAD_F(0x01965fea), /* 0.099212565748 => 0.099212564528, e 0.000000001220 */
MAD_F(0x01428a30), /* 0.078745065618 => 0.078745067120, e -0.000000001501 */
MAD_F(0x01000000), /* 0.062500000000 => 0.062500000000, e 0.000000000000 */
MAD_F(0x00cb2ff5), /* 0.049606282874 => 0.049606282264, e 0.000000000610 */
MAD_F(0x00a14518), /* 0.039372532809 => 0.039372533560, e -0.000000000751 */
MAD_F(0x00800000), /* 0.031250000000 => 0.031250000000, e 0.000000000000 */
MAD_F(0x006597fb), /* 0.024803141437 => 0.024803142995, e -0.000000001558 */
MAD_F(0x0050a28c), /* 0.019686266405 => 0.019686266780, e -0.000000000375 */
MAD_F(0x00400000), /* 0.015625000000 => 0.015625000000, e 0.000000000000 */
MAD_F(0x0032cbfd), /* 0.012401570719 => 0.012401569635, e 0.000000001084 */
MAD_F(0x00285146), /* 0.009843133202 => 0.009843133390, e -0.000000000188 */
MAD_F(0x00200000), /* 0.007812500000 => 0.007812500000, e 0.000000000000 */
MAD_F(0x001965ff), /* 0.006200785359 => 0.006200786680, e -0.000000001321 */
MAD_F(0x001428a3), /* 0.004921566601 => 0.004921566695, e -0.000000000094 */
MAD_F(0x00100000), /* 0.003906250000 => 0.003906250000, e 0.000000000000 */
MAD_F(0x000cb2ff), /* 0.003100392680 => 0.003100391477, e 0.000000001202 */
MAD_F(0x000a1451), /* 0.002460783301 => 0.002460781485, e 0.000000001816 */
MAD_F(0x00080000), /* 0.001953125000 => 0.001953125000, e 0.000000000000 */
MAD_F(0x00065980), /* 0.001550196340 => 0.001550197601, e -0.000000001262 */
MAD_F(0x00050a29), /* 0.001230391650 => 0.001230392605, e -0.000000000955 */
MAD_F(0x00040000), /* 0.000976562500 => 0.000976562500, e 0.000000000000 */
MAD_F(0x00032cc0), /* 0.000775098170 => 0.000775098801, e -0.000000000631 */
MAD_F(0x00028514), /* 0.000615195825 => 0.000615194440, e 0.000000001385 */
MAD_F(0x00020000), /* 0.000488281250 => 0.000488281250, e 0.000000000000 */
MAD_F(0x00019660), /* 0.000387549085 => 0.000387549400, e -0.000000000315 */
MAD_F(0x0001428a), /* 0.000307597913 => 0.000307597220, e 0.000000000693 */
MAD_F(0x00010000), /* 0.000244140625 => 0.000244140625, e 0.000000000000 */
MAD_F(0x0000cb30), /* 0.000193774542 => 0.000193774700, e -0.000000000158 */
MAD_F(0x0000a145), /* 0.000153798956 => 0.000153798610, e 0.000000000346 */
MAD_F(0x00008000), /* 0.000122070313 => 0.000122070313, e 0.000000000000 */
MAD_F(0x00006598), /* 0.000096887271 => 0.000096887350, e -0.000000000079 */
MAD_F(0x000050a3), /* 0.000076899478 => 0.000076901168, e -0.000000001689 */
MAD_F(0x00004000), /* 0.000061035156 => 0.000061035156, e 0.000000000000 */
MAD_F(0x000032cc), /* 0.000048443636 => 0.000048443675, e -0.000000000039 */
MAD_F(0x00002851), /* 0.000038449739 => 0.000038448721, e 0.000000001018 */
MAD_F(0x00002000), /* 0.000030517578 => 0.000030517578, e 0.000000000000 */
MAD_F(0x00001966), /* 0.000024221818 => 0.000024221838, e -0.000000000020 */
MAD_F(0x00001429), /* 0.000019224870 => 0.000019226223, e -0.000000001354 */
MAD_F(0x00001000), /* 0.000015258789 => 0.000015258789, e -0.000000000000 */
MAD_F(0x00000cb3), /* 0.000012110909 => 0.000012110919, e -0.000000000010 */
MAD_F(0x00000a14), /* 0.000009612435 => 0.000009611249, e 0.000000001186 */
MAD_F(0x00000800), /* 0.000007629395 => 0.000007629395, e -0.000000000000 */
MAD_F(0x00000659), /* 0.000006055454 => 0.000006053597, e 0.000000001858 */
MAD_F(0x0000050a), /* 0.000004806217 => 0.000004805624, e 0.000000000593 */
MAD_F(0x00000400), /* 0.000003814697 => 0.000003814697, e 0.000000000000 */
MAD_F(0x0000032d), /* 0.000003027727 => 0.000003028661, e -0.000000000934 */
MAD_F(0x00000285), /* 0.000002403109 => 0.000002402812, e 0.000000000296 */
MAD_F(0x00000200), /* 0.000001907349 => 0.000001907349, e -0.000000000000 */
MAD_F(0x00000196), /* 0.000001513864 => 0.000001512468, e 0.000000001396 */
MAD_F(0x00000143) /* 0.000001201554 => 0.000001203269, e -0.000000001714 */
--- NEW FILE: imdct_l_arm.S ---
/*****************************************************************************
* Copyright (C) 2000-2001 Andre McCurdy <armccurdy@yahoo.co.uk>
*
* 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
*
*****************************************************************************
*
[...961 lines suppressed...]
stmia r1!, { r0, r2, r3, r4, r12, lr } @ store windowed x[24] .. x[29]
ldr r7, =0x00
ldr r8, =0x00
ldr r9, =0x00
ldr r10, =0x00
stmia r1!, { r5 - r10 } @ store windowed x[30] .. x[35]
@----
@ NB there are 2 possible exits from this function - this is only one of them
@----
add sp, sp, #(21*4) @ return stack frame
ldmia sp!, { r4 - r11, pc } @ restore callee saved regs, and return
@----
@END
@----
--- NEW FILE: D.dat ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: D.dat,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
/*
* These are the coefficients for the subband synthesis window. This is a
* reordered version of Table B.3 from ISO/IEC 11172-3.
*
* Every value is parameterized so that shift optimizations can be made at
* compile-time. For example, every value can be right-shifted 12 bits to
* minimize multiply instruction times without any loss of accuracy.
*/
{ PRESHIFT(0x00000000) /* 0.000000000 */, /* 0 */
-PRESHIFT(0x0001d000) /* -0.000442505 */,
PRESHIFT(0x000d5000) /* 0.003250122 */,
-PRESHIFT(0x001cb000) /* -0.007003784 */,
PRESHIFT(0x007f5000) /* 0.031082153 */,
-PRESHIFT(0x01421000) /* -0.078628540 */,
PRESHIFT(0x019ae000) /* 0.100311279 */,
-PRESHIFT(0x09271000) /* -0.572036743 */,
PRESHIFT(0x1251e000) /* 1.144989014 */,
PRESHIFT(0x09271000) /* 0.572036743 */,
PRESHIFT(0x019ae000) /* 0.100311279 */,
PRESHIFT(0x01421000) /* 0.078628540 */,
PRESHIFT(0x007f5000) /* 0.031082153 */,
PRESHIFT(0x001cb000) /* 0.007003784 */,
PRESHIFT(0x000d5000) /* 0.003250122 */,
PRESHIFT(0x0001d000) /* 0.000442505 */,
PRESHIFT(0x00000000) /* 0.000000000 */,
-PRESHIFT(0x0001d000) /* -0.000442505 */,
PRESHIFT(0x000d5000) /* 0.003250122 */,
-PRESHIFT(0x001cb000) /* -0.007003784 */,
PRESHIFT(0x007f5000) /* 0.031082153 */,
-PRESHIFT(0x01421000) /* -0.078628540 */,
PRESHIFT(0x019ae000) /* 0.100311279 */,
-PRESHIFT(0x09271000) /* -0.572036743 */,
PRESHIFT(0x1251e000) /* 1.144989014 */,
PRESHIFT(0x09271000) /* 0.572036743 */,
PRESHIFT(0x019ae000) /* 0.100311279 */,
PRESHIFT(0x01421000) /* 0.078628540 */,
PRESHIFT(0x007f5000) /* 0.031082153 */,
PRESHIFT(0x001cb000) /* 0.007003784 */,
PRESHIFT(0x000d5000) /* 0.003250122 */,
PRESHIFT(0x0001d000) /* 0.000442505 */ },
{ -PRESHIFT(0x00001000) /* -0.000015259 */, /* 1 */
-PRESHIFT(0x0001f000) /* -0.000473022 */,
PRESHIFT(0x000da000) /* 0.003326416 */,
-PRESHIFT(0x00207000) /* -0.007919312 */,
PRESHIFT(0x007d0000) /* 0.030517578 */,
-PRESHIFT(0x0158d000) /* -0.084182739 */,
PRESHIFT(0x01747000) /* 0.090927124 */,
-PRESHIFT(0x099a8000) /* -0.600219727 */,
PRESHIFT(0x124f0000) /* 1.144287109 */,
PRESHIFT(0x08b38000) /* 0.543823242 */,
PRESHIFT(0x01bde000) /* 0.108856201 */,
PRESHIFT(0x012b4000) /* 0.073059082 */,
PRESHIFT(0x0080f000) /* 0.031478882 */,
PRESHIFT(0x00191000) /* 0.006118774 */,
PRESHIFT(0x000d0000) /* 0.003173828 */,
PRESHIFT(0x0001a000) /* 0.000396729 */,
-PRESHIFT(0x00001000) /* -0.000015259 */,
-PRESHIFT(0x0001f000) /* -0.000473022 */,
PRESHIFT(0x000da000) /* 0.003326416 */,
-PRESHIFT(0x00207000) /* -0.007919312 */,
PRESHIFT(0x007d0000) /* 0.030517578 */,
-PRESHIFT(0x0158d000) /* -0.084182739 */,
PRESHIFT(0x01747000) /* 0.090927124 */,
-PRESHIFT(0x099a8000) /* -0.600219727 */,
PRESHIFT(0x124f0000) /* 1.144287109 */,
PRESHIFT(0x08b38000) /* 0.543823242 */,
PRESHIFT(0x01bde000) /* 0.108856201 */,
PRESHIFT(0x012b4000) /* 0.073059082 */,
PRESHIFT(0x0080f000) /* 0.031478882 */,
PRESHIFT(0x00191000) /* 0.006118774 */,
PRESHIFT(0x000d0000) /* 0.003173828 */,
PRESHIFT(0x0001a000) /* 0.000396729 */ },
{ -PRESHIFT(0x00001000) /* -0.000015259 */, /* 2 */
-PRESHIFT(0x00023000) /* -0.000534058 */,
PRESHIFT(0x000de000) /* 0.003387451 */,
-PRESHIFT(0x00245000) /* -0.008865356 */,
PRESHIFT(0x007a0000) /* 0.029785156 */,
-PRESHIFT(0x016f7000) /* -0.089706421 */,
PRESHIFT(0x014a8000) /* 0.080688477 */,
-PRESHIFT(0x0a0d8000) /* -0.628295898 */,
PRESHIFT(0x12468000) /* 1.142211914 */,
PRESHIFT(0x083ff000) /* 0.515609741 */,
PRESHIFT(0x01dd8000) /* 0.116577148 */,
PRESHIFT(0x01149000) /* 0.067520142 */,
PRESHIFT(0x00820000) /* 0.031738281 */,
PRESHIFT(0x0015b000) /* 0.005294800 */,
PRESHIFT(0x000ca000) /* 0.003082275 */,
PRESHIFT(0x00018000) /* 0.000366211 */,
-PRESHIFT(0x00001000) /* -0.000015259 */,
-PRESHIFT(0x00023000) /* -0.000534058 */,
PRESHIFT(0x000de000) /* 0.003387451 */,
-PRESHIFT(0x00245000) /* -0.008865356 */,
PRESHIFT(0x007a0000) /* 0.029785156 */,
-PRESHIFT(0x016f7000) /* -0.089706421 */,
PRESHIFT(0x014a8000) /* 0.080688477 */,
-PRESHIFT(0x0a0d8000) /* -0.628295898 */,
PRESHIFT(0x12468000) /* 1.142211914 */,
PRESHIFT(0x083ff000) /* 0.515609741 */,
PRESHIFT(0x01dd8000) /* 0.116577148 */,
PRESHIFT(0x01149000) /* 0.067520142 */,
PRESHIFT(0x00820000) /* 0.031738281 */,
PRESHIFT(0x0015b000) /* 0.005294800 */,
PRESHIFT(0x000ca000) /* 0.003082275 */,
PRESHIFT(0x00018000) /* 0.000366211 */ },
{ -PRESHIFT(0x00001000) /* -0.000015259 */, /* 3 */
-PRESHIFT(0x00026000) /* -0.000579834 */,
PRESHIFT(0x000e1000) /* 0.003433228 */,
-PRESHIFT(0x00285000) /* -0.009841919 */,
PRESHIFT(0x00765000) /* 0.028884888 */,
-PRESHIFT(0x0185d000) /* -0.095169067 */,
PRESHIFT(0x011d1000) /* 0.069595337 */,
-PRESHIFT(0x0a7fe000) /* -0.656219482 */,
PRESHIFT(0x12386000) /* 1.138763428 */,
PRESHIFT(0x07ccb000) /* 0.487472534 */,
PRESHIFT(0x01f9c000) /* 0.123474121 */,
PRESHIFT(0x00fdf000) /* 0.061996460 */,
PRESHIFT(0x00827000) /* 0.031845093 */,
PRESHIFT(0x00126000) /* 0.004486084 */,
PRESHIFT(0x000c4000) /* 0.002990723 */,
PRESHIFT(0x00015000) /* 0.000320435 */,
-PRESHIFT(0x00001000) /* -0.000015259 */,
-PRESHIFT(0x00026000) /* -0.000579834 */,
PRESHIFT(0x000e1000) /* 0.003433228 */,
-PRESHIFT(0x00285000) /* -0.009841919 */,
PRESHIFT(0x00765000) /* 0.028884888 */,
-PRESHIFT(0x0185d000) /* -0.095169067 */,
PRESHIFT(0x011d1000) /* 0.069595337 */,
-PRESHIFT(0x0a7fe000) /* -0.656219482 */,
PRESHIFT(0x12386000) /* 1.138763428 */,
PRESHIFT(0x07ccb000) /* 0.487472534 */,
PRESHIFT(0x01f9c000) /* 0.123474121 */,
PRESHIFT(0x00fdf000) /* 0.061996460 */,
PRESHIFT(0x00827000) /* 0.031845093 */,
PRESHIFT(0x00126000) /* 0.004486084 */,
PRESHIFT(0x000c4000) /* 0.002990723 */,
PRESHIFT(0x00015000) /* 0.000320435 */ },
{ -PRESHIFT(0x00001000) /* -0.000015259 */, /* 4 */
-PRESHIFT(0x00029000) /* -0.000625610 */,
PRESHIFT(0x000e3000) /* 0.003463745 */,
-PRESHIFT(0x002c7000) /* -0.010848999 */,
PRESHIFT(0x0071e000) /* 0.027801514 */,
-PRESHIFT(0x019bd000) /* -0.100540161 */,
PRESHIFT(0x00ec0000) /* 0.057617187 */,
-PRESHIFT(0x0af15000) /* -0.683914185 */,
PRESHIFT(0x12249000) /* 1.133926392 */,
PRESHIFT(0x075a0000) /* 0.459472656 */,
PRESHIFT(0x0212c000) /* 0.129577637 */,
PRESHIFT(0x00e79000) /* 0.056533813 */,
PRESHIFT(0x00825000) /* 0.031814575 */,
PRESHIFT(0x000f4000) /* 0.003723145 */,
PRESHIFT(0x000be000) /* 0.002899170 */,
PRESHIFT(0x00013000) /* 0.000289917 */,
-PRESHIFT(0x00001000) /* -0.000015259 */,
-PRESHIFT(0x00029000) /* -0.000625610 */,
PRESHIFT(0x000e3000) /* 0.003463745 */,
-PRESHIFT(0x002c7000) /* -0.010848999 */,
PRESHIFT(0x0071e000) /* 0.027801514 */,
-PRESHIFT(0x019bd000) /* -0.100540161 */,
PRESHIFT(0x00ec0000) /* 0.057617187 */,
-PRESHIFT(0x0af15000) /* -0.683914185 */,
PRESHIFT(0x12249000) /* 1.133926392 */,
PRESHIFT(0x075a0000) /* 0.459472656 */,
PRESHIFT(0x0212c000) /* 0.129577637 */,
PRESHIFT(0x00e79000) /* 0.056533813 */,
PRESHIFT(0x00825000) /* 0.031814575 */,
PRESHIFT(0x000f4000) /* 0.003723145 */,
PRESHIFT(0x000be000) /* 0.002899170 */,
PRESHIFT(0x00013000) /* 0.000289917 */ },
{ -PRESHIFT(0x00001000) /* -0.000015259 */, /* 5 */
-PRESHIFT(0x0002d000) /* -0.000686646 */,
PRESHIFT(0x000e4000) /* 0.003479004 */,
-PRESHIFT(0x0030b000) /* -0.011886597 */,
PRESHIFT(0x006cb000) /* 0.026535034 */,
-PRESHIFT(0x01b17000) /* -0.105819702 */,
PRESHIFT(0x00b77000) /* 0.044784546 */,
-PRESHIFT(0x0b619000) /* -0.711318970 */,
PRESHIFT(0x120b4000) /* 1.127746582 */,
PRESHIFT(0x06e81000) /* 0.431655884 */,
PRESHIFT(0x02288000) /* 0.134887695 */,
PRESHIFT(0x00d17000) /* 0.051132202 */,
PRESHIFT(0x0081b000) /* 0.031661987 */,
PRESHIFT(0x000c5000) /* 0.003005981 */,
PRESHIFT(0x000b7000) /* 0.002792358 */,
PRESHIFT(0x00011000) /* 0.000259399 */,
-PRESHIFT(0x00001000) /* -0.000015259 */,
-PRESHIFT(0x0002d000) /* -0.000686646 */,
PRESHIFT(0x000e4000) /* 0.003479004 */,
-PRESHIFT(0x0030b000) /* -0.011886597 */,
PRESHIFT(0x006cb000) /* 0.026535034 */,
-PRESHIFT(0x01b17000) /* -0.105819702 */,
PRESHIFT(0x00b77000) /* 0.044784546 */,
-PRESHIFT(0x0b619000) /* -0.711318970 */,
PRESHIFT(0x120b4000) /* 1.127746582 */,
PRESHIFT(0x06e81000) /* 0.431655884 */,
PRESHIFT(0x02288000) /* 0.134887695 */,
PRESHIFT(0x00d17000) /* 0.051132202 */,
PRESHIFT(0x0081b000) /* 0.031661987 */,
PRESHIFT(0x000c5000) /* 0.003005981 */,
PRESHIFT(0x000b7000) /* 0.002792358 */,
PRESHIFT(0x00011000) /* 0.000259399 */ },
{ -PRESHIFT(0x00001000) /* -0.000015259 */, /* 6 */
-PRESHIFT(0x00031000) /* -0.000747681 */,
PRESHIFT(0x000e4000) /* 0.003479004 */,
-PRESHIFT(0x00350000) /* -0.012939453 */,
PRESHIFT(0x0066c000) /* 0.025085449 */,
-PRESHIFT(0x01c67000) /* -0.110946655 */,
PRESHIFT(0x007f5000) /* 0.031082153 */,
-PRESHIFT(0x0bd06000) /* -0.738372803 */,
PRESHIFT(0x11ec7000) /* 1.120223999 */,
PRESHIFT(0x06772000) /* 0.404083252 */,
PRESHIFT(0x023b3000) /* 0.139450073 */,
PRESHIFT(0x00bbc000) /* 0.045837402 */,
PRESHIFT(0x00809000) /* 0.031387329 */,
PRESHIFT(0x00099000) /* 0.002334595 */,
PRESHIFT(0x000b0000) /* 0.002685547 */,
PRESHIFT(0x00010000) /* 0.000244141 */,
-PRESHIFT(0x00001000) /* -0.000015259 */,
-PRESHIFT(0x00031000) /* -0.000747681 */,
PRESHIFT(0x000e4000) /* 0.003479004 */,
-PRESHIFT(0x00350000) /* -0.012939453 */,
PRESHIFT(0x0066c000) /* 0.025085449 */,
-PRESHIFT(0x01c67000) /* -0.110946655 */,
PRESHIFT(0x007f5000) /* 0.031082153 */,
-PRESHIFT(0x0bd06000) /* -0.738372803 */,
PRESHIFT(0x11ec7000) /* 1.120223999 */,
PRESHIFT(0x06772000) /* 0.404083252 */,
PRESHIFT(0x023b3000) /* 0.139450073 */,
PRESHIFT(0x00bbc000) /* 0.045837402 */,
PRESHIFT(0x00809000) /* 0.031387329 */,
PRESHIFT(0x00099000) /* 0.002334595 */,
PRESHIFT(0x000b0000) /* 0.002685547 */,
PRESHIFT(0x00010000) /* 0.000244141 */ },
{ -PRESHIFT(0x00002000) /* -0.000030518 */, /* 7 */
-PRESHIFT(0x00035000) /* -0.000808716 */,
PRESHIFT(0x000e3000) /* 0.003463745 */,
-PRESHIFT(0x00397000) /* -0.014022827 */,
PRESHIFT(0x005ff000) /* 0.023422241 */,
-PRESHIFT(0x01dad000) /* -0.115921021 */,
PRESHIFT(0x0043a000) /* 0.016510010 */,
-PRESHIFT(0x0c3d9000) /* -0.765029907 */,
PRESHIFT(0x11c83000) /* 1.111373901 */,
PRESHIFT(0x06076000) /* 0.376800537 */,
PRESHIFT(0x024ad000) /* 0.143264771 */,
PRESHIFT(0x00a67000) /* 0.040634155 */,
PRESHIFT(0x007f0000) /* 0.031005859 */,
PRESHIFT(0x0006f000) /* 0.001693726 */,
PRESHIFT(0x000a9000) /* 0.002578735 */,
PRESHIFT(0x0000e000) /* 0.000213623 */,
-PRESHIFT(0x00002000) /* -0.000030518 */,
-PRESHIFT(0x00035000) /* -0.000808716 */,
PRESHIFT(0x000e3000) /* 0.003463745 */,
-PRESHIFT(0x00397000) /* -0.014022827 */,
PRESHIFT(0x005ff000) /* 0.023422241 */,
-PRESHIFT(0x01dad000) /* -0.115921021 */,
PRESHIFT(0x0043a000) /* 0.016510010 */,
-PRESHIFT(0x0c3d9000) /* -0.765029907 */,
PRESHIFT(0x11c83000) /* 1.111373901 */,
PRESHIFT(0x06076000) /* 0.376800537 */,
PRESHIFT(0x024ad000) /* 0.143264771 */,
PRESHIFT(0x00a67000) /* 0.040634155 */,
PRESHIFT(0x007f0000) /* 0.031005859 */,
PRESHIFT(0x0006f000) /* 0.001693726 */,
PRESHIFT(0x000a9000) /* 0.002578735 */,
PRESHIFT(0x0000e000) /* 0.000213623 */ },
{ -PRESHIFT(0x00002000) /* -0.000030518 */, /* 8 */
-PRESHIFT(0x0003a000) /* -0.000885010 */,
PRESHIFT(0x000e0000) /* 0.003417969 */,
-PRESHIFT(0x003df000) /* -0.015121460 */,
PRESHIFT(0x00586000) /* 0.021575928 */,
-PRESHIFT(0x01ee6000) /* -0.120697021 */,
PRESHIFT(0x00046000) /* 0.001068115 */,
-PRESHIFT(0x0ca8d000) /* -0.791213989 */,
PRESHIFT(0x119e9000) /* 1.101211548 */,
PRESHIFT(0x05991000) /* 0.349868774 */,
PRESHIFT(0x02578000) /* 0.146362305 */,
PRESHIFT(0x0091a000) /* 0.035552979 */,
PRESHIFT(0x007d1000) /* 0.030532837 */,
PRESHIFT(0x00048000) /* 0.001098633 */,
PRESHIFT(0x000a1000) /* 0.002456665 */,
PRESHIFT(0x0000d000) /* 0.000198364 */,
-PRESHIFT(0x00002000) /* -0.000030518 */,
-PRESHIFT(0x0003a000) /* -0.000885010 */,
PRESHIFT(0x000e0000) /* 0.003417969 */,
-PRESHIFT(0x003df000) /* -0.015121460 */,
PRESHIFT(0x00586000) /* 0.021575928 */,
-PRESHIFT(0x01ee6000) /* -0.120697021 */,
PRESHIFT(0x00046000) /* 0.001068115 */,
-PRESHIFT(0x0ca8d000) /* -0.791213989 */,
PRESHIFT(0x119e9000) /* 1.101211548 */,
PRESHIFT(0x05991000) /* 0.349868774 */,
PRESHIFT(0x02578000) /* 0.146362305 */,
PRESHIFT(0x0091a000) /* 0.035552979 */,
PRESHIFT(0x007d1000) /* 0.030532837 */,
PRESHIFT(0x00048000) /* 0.001098633 */,
PRESHIFT(0x000a1000) /* 0.002456665 */,
PRESHIFT(0x0000d000) /* 0.000198364 */ },
{ -PRESHIFT(0x00002000) /* -0.000030518 */, /* 9 */
-PRESHIFT(0x0003f000) /* -0.000961304 */,
PRESHIFT(0x000dd000) /* 0.003372192 */,
-PRESHIFT(0x00428000) /* -0.016235352 */,
PRESHIFT(0x00500000) /* 0.019531250 */,
-PRESHIFT(0x02011000) /* -0.125259399 */,
-PRESHIFT(0x003e6000) /* -0.015228271 */,
-PRESHIFT(0x0d11e000) /* -0.816864014 */,
PRESHIFT(0x116fc000) /* 1.089782715 */,
PRESHIFT(0x052c5000) /* 0.323318481 */,
PRESHIFT(0x02616000) /* 0.148773193 */,
PRESHIFT(0x007d6000) /* 0.030609131 */,
PRESHIFT(0x007aa000) /* 0.029937744 */,
PRESHIFT(0x00024000) /* 0.000549316 */,
PRESHIFT(0x0009a000) /* 0.002349854 */,
PRESHIFT(0x0000b000) /* 0.000167847 */,
-PRESHIFT(0x00002000) /* -0.000030518 */,
-PRESHIFT(0x0003f000) /* -0.000961304 */,
PRESHIFT(0x000dd000) /* 0.003372192 */,
-PRESHIFT(0x00428000) /* -0.016235352 */,
PRESHIFT(0x00500000) /* 0.019531250 */,
-PRESHIFT(0x02011000) /* -0.125259399 */,
-PRESHIFT(0x003e6000) /* -0.015228271 */,
-PRESHIFT(0x0d11e000) /* -0.816864014 */,
PRESHIFT(0x116fc000) /* 1.089782715 */,
PRESHIFT(0x052c5000) /* 0.323318481 */,
PRESHIFT(0x02616000) /* 0.148773193 */,
PRESHIFT(0x007d6000) /* 0.030609131 */,
PRESHIFT(0x007aa000) /* 0.029937744 */,
PRESHIFT(0x00024000) /* 0.000549316 */,
PRESHIFT(0x0009a000) /* 0.002349854 */,
PRESHIFT(0x0000b000) /* 0.000167847 */ },
{ -PRESHIFT(0x00002000) /* -0.000030518 */, /* 10 */
-PRESHIFT(0x00044000) /* -0.001037598 */,
PRESHIFT(0x000d7000) /* 0.003280640 */,
-PRESHIFT(0x00471000) /* -0.017349243 */,
PRESHIFT(0x0046b000) /* 0.017257690 */,
-PRESHIFT(0x0212b000) /* -0.129562378 */,
-PRESHIFT(0x0084a000) /* -0.032379150 */,
-PRESHIFT(0x0d78a000) /* -0.841949463 */,
PRESHIFT(0x113be000) /* 1.077117920 */,
PRESHIFT(0x04c16000) /* 0.297210693 */,
PRESHIFT(0x02687000) /* 0.150497437 */,
PRESHIFT(0x0069c000) /* 0.025817871 */,
PRESHIFT(0x0077f000) /* 0.029281616 */,
PRESHIFT(0x00002000) /* 0.000030518 */,
PRESHIFT(0x00093000) /* 0.002243042 */,
PRESHIFT(0x0000a000) /* 0.000152588 */,
-PRESHIFT(0x00002000) /* -0.000030518 */,
-PRESHIFT(0x00044000) /* -0.001037598 */,
PRESHIFT(0x000d7000) /* 0.003280640 */,
-PRESHIFT(0x00471000) /* -0.017349243 */,
PRESHIFT(0x0046b000) /* 0.017257690 */,
-PRESHIFT(0x0212b000) /* -0.129562378 */,
-PRESHIFT(0x0084a000) /* -0.032379150 */,
-PRESHIFT(0x0d78a000) /* -0.841949463 */,
PRESHIFT(0x113be000) /* 1.077117920 */,
PRESHIFT(0x04c16000) /* 0.297210693 */,
PRESHIFT(0x02687000) /* 0.150497437 */,
PRESHIFT(0x0069c000) /* 0.025817871 */,
PRESHIFT(0x0077f000) /* 0.029281616 */,
PRESHIFT(0x00002000) /* 0.000030518 */,
PRESHIFT(0x00093000) /* 0.002243042 */,
PRESHIFT(0x0000a000) /* 0.000152588 */ },
{ -PRESHIFT(0x00003000) /* -0.000045776 */, /* 11 */
-PRESHIFT(0x00049000) /* -0.001113892 */,
PRESHIFT(0x000d0000) /* 0.003173828 */,
-PRESHIFT(0x004ba000) /* -0.018463135 */,
PRESHIFT(0x003ca000) /* 0.014801025 */,
-PRESHIFT(0x02233000) /* -0.133590698 */,
-PRESHIFT(0x00ce4000) /* -0.050354004 */,
-PRESHIFT(0x0ddca000) /* -0.866363525 */,
PRESHIFT(0x1102f000) /* 1.063217163 */,
PRESHIFT(0x04587000) /* 0.271591187 */,
PRESHIFT(0x026cf000) /* 0.151596069 */,
PRESHIFT(0x0056c000) /* 0.021179199 */,
PRESHIFT(0x0074e000) /* 0.028533936 */,
-PRESHIFT(0x0001d000) /* -0.000442505 */,
PRESHIFT(0x0008b000) /* 0.002120972 */,
PRESHIFT(0x00009000) /* 0.000137329 */,
-PRESHIFT(0x00003000) /* -0.000045776 */,
-PRESHIFT(0x00049000) /* -0.001113892 */,
PRESHIFT(0x000d0000) /* 0.003173828 */,
-PRESHIFT(0x004ba000) /* -0.018463135 */,
PRESHIFT(0x003ca000) /* 0.014801025 */,
-PRESHIFT(0x02233000) /* -0.133590698 */,
-PRESHIFT(0x00ce4000) /* -0.050354004 */,
-PRESHIFT(0x0ddca000) /* -0.866363525 */,
PRESHIFT(0x1102f000) /* 1.063217163 */,
PRESHIFT(0x04587000) /* 0.271591187 */,
PRESHIFT(0x026cf000) /* 0.151596069 */,
PRESHIFT(0x0056c000) /* 0.021179199 */,
PRESHIFT(0x0074e000) /* 0.028533936 */,
-PRESHIFT(0x0001d000) /* -0.000442505 */,
PRESHIFT(0x0008b000) /* 0.002120972 */,
PRESHIFT(0x00009000) /* 0.000137329 */ },
{ -PRESHIFT(0x00003000) /* -0.000045776 */, /* 12 */
-PRESHIFT(0x0004f000) /* -0.001205444 */,
PRESHIFT(0x000c8000) /* 0.003051758 */,
-PRESHIFT(0x00503000) /* -0.019577026 */,
PRESHIFT(0x0031a000) /* 0.012115479 */,
-PRESHIFT(0x02326000) /* -0.137298584 */,
-PRESHIFT(0x011b5000) /* -0.069168091 */,
-PRESHIFT(0x0e3dd000) /* -0.890090942 */,
PRESHIFT(0x10c54000) /* 1.048156738 */,
PRESHIFT(0x03f1b000) /* 0.246505737 */,
PRESHIFT(0x026ee000) /* 0.152069092 */,
PRESHIFT(0x00447000) /* 0.016708374 */,
PRESHIFT(0x00719000) /* 0.027725220 */,
-PRESHIFT(0x00039000) /* -0.000869751 */,
PRESHIFT(0x00084000) /* 0.002014160 */,
PRESHIFT(0x00008000) /* 0.000122070 */,
-PRESHIFT(0x00003000) /* -0.000045776 */,
-PRESHIFT(0x0004f000) /* -0.001205444 */,
PRESHIFT(0x000c8000) /* 0.003051758 */,
-PRESHIFT(0x00503000) /* -0.019577026 */,
PRESHIFT(0x0031a000) /* 0.012115479 */,
-PRESHIFT(0x02326000) /* -0.137298584 */,
-PRESHIFT(0x011b5000) /* -0.069168091 */,
-PRESHIFT(0x0e3dd000) /* -0.890090942 */,
PRESHIFT(0x10c54000) /* 1.048156738 */,
PRESHIFT(0x03f1b000) /* 0.246505737 */,
PRESHIFT(0x026ee000) /* 0.152069092 */,
PRESHIFT(0x00447000) /* 0.016708374 */,
PRESHIFT(0x00719000) /* 0.027725220 */,
-PRESHIFT(0x00039000) /* -0.000869751 */,
PRESHIFT(0x00084000) /* 0.002014160 */,
PRESHIFT(0x00008000) /* 0.000122070 */ },
{ -PRESHIFT(0x00004000) /* -0.000061035 */, /* 13 */
-PRESHIFT(0x00055000) /* -0.001296997 */,
PRESHIFT(0x000bd000) /* 0.002883911 */,
-PRESHIFT(0x0054c000) /* -0.020690918 */,
PRESHIFT(0x0025d000) /* 0.009231567 */,
-PRESHIFT(0x02403000) /* -0.140670776 */,
-PRESHIFT(0x016ba000) /* -0.088775635 */,
-PRESHIFT(0x0e9be000) /* -0.913055420 */,
PRESHIFT(0x1082d000) /* 1.031936646 */,
PRESHIFT(0x038d4000) /* 0.221984863 */,
PRESHIFT(0x026e7000) /* 0.151962280 */,
PRESHIFT(0x0032e000) /* 0.012420654 */,
PRESHIFT(0x006df000) /* 0.026840210 */,
-PRESHIFT(0x00053000) /* -0.001266479 */,
PRESHIFT(0x0007d000) /* 0.001907349 */,
PRESHIFT(0x00007000) /* 0.000106812 */,
-PRESHIFT(0x00004000) /* -0.000061035 */,
-PRESHIFT(0x00055000) /* -0.001296997 */,
PRESHIFT(0x000bd000) /* 0.002883911 */,
-PRESHIFT(0x0054c000) /* -0.020690918 */,
PRESHIFT(0x0025d000) /* 0.009231567 */,
-PRESHIFT(0x02403000) /* -0.140670776 */,
-PRESHIFT(0x016ba000) /* -0.088775635 */,
-PRESHIFT(0x0e9be000) /* -0.913055420 */,
PRESHIFT(0x1082d000) /* 1.031936646 */,
PRESHIFT(0x038d4000) /* 0.221984863 */,
PRESHIFT(0x026e7000) /* 0.151962280 */,
PRESHIFT(0x0032e000) /* 0.012420654 */,
PRESHIFT(0x006df000) /* 0.026840210 */,
-PRESHIFT(0x00053000) /* -0.001266479 */,
PRESHIFT(0x0007d000) /* 0.001907349 */,
PRESHIFT(0x00007000) /* 0.000106812 */ },
{ -PRESHIFT(0x00004000) /* -0.000061035 */, /* 14 */
-PRESHIFT(0x0005b000) /* -0.001388550 */,
PRESHIFT(0x000b1000) /* 0.002700806 */,
-PRESHIFT(0x00594000) /* -0.021789551 */,
PRESHIFT(0x00192000) /* 0.006134033 */,
-PRESHIFT(0x024c8000) /* -0.143676758 */,
-PRESHIFT(0x01bf2000) /* -0.109161377 */,
-PRESHIFT(0x0ef69000) /* -0.935195923 */,
PRESHIFT(0x103be000) /* 1.014617920 */,
PRESHIFT(0x032b4000) /* 0.198059082 */,
PRESHIFT(0x026bc000) /* 0.151306152 */,
PRESHIFT(0x00221000) /* 0.008316040 */,
PRESHIFT(0x006a2000) /* 0.025909424 */,
-PRESHIFT(0x0006a000) /* -0.001617432 */,
PRESHIFT(0x00075000) /* 0.001785278 */,
PRESHIFT(0x00007000) /* 0.000106812 */,
-PRESHIFT(0x00004000) /* -0.000061035 */,
-PRESHIFT(0x0005b000) /* -0.001388550 */,
PRESHIFT(0x000b1000) /* 0.002700806 */,
-PRESHIFT(0x00594000) /* -0.021789551 */,
PRESHIFT(0x00192000) /* 0.006134033 */,
-PRESHIFT(0x024c8000) /* -0.143676758 */,
-PRESHIFT(0x01bf2000) /* -0.109161377 */,
-PRESHIFT(0x0ef69000) /* -0.935195923 */,
PRESHIFT(0x103be000) /* 1.014617920 */,
PRESHIFT(0x032b4000) /* 0.198059082 */,
PRESHIFT(0x026bc000) /* 0.151306152 */,
PRESHIFT(0x00221000) /* 0.008316040 */,
PRESHIFT(0x006a2000) /* 0.025909424 */,
-PRESHIFT(0x0006a000) /* -0.001617432 */,
PRESHIFT(0x00075000) /* 0.001785278 */,
PRESHIFT(0x00007000) /* 0.000106812 */ },
{ -PRESHIFT(0x00005000) /* -0.000076294 */, /* 15 */
-PRESHIFT(0x00061000) /* -0.001480103 */,
PRESHIFT(0x000a3000) /* 0.002487183 */,
-PRESHIFT(0x005da000) /* -0.022857666 */,
PRESHIFT(0x000b9000) /* 0.002822876 */,
-PRESHIFT(0x02571000) /* -0.146255493 */,
-PRESHIFT(0x0215c000) /* -0.130310059 */,
-PRESHIFT(0x0f4dc000) /* -0.956481934 */,
PRESHIFT(0x0ff0a000) /* 0.996246338 */,
PRESHIFT(0x02cbf000) /* 0.174789429 */,
PRESHIFT(0x0266e000) /* 0.150115967 */,
PRESHIFT(0x00120000) /* 0.004394531 */,
PRESHIFT(0x00662000) /* 0.024932861 */,
-PRESHIFT(0x0007f000) /* -0.001937866 */,
PRESHIFT(0x0006f000) /* 0.001693726 */,
PRESHIFT(0x00006000) /* 0.000091553 */,
-PRESHIFT(0x00005000) /* -0.000076294 */,
-PRESHIFT(0x00061000) /* -0.001480103 */,
PRESHIFT(0x000a3000) /* 0.002487183 */,
-PRESHIFT(0x005da000) /* -0.022857666 */,
PRESHIFT(0x000b9000) /* 0.002822876 */,
-PRESHIFT(0x02571000) /* -0.146255493 */,
-PRESHIFT(0x0215c000) /* -0.130310059 */,
-PRESHIFT(0x0f4dc000) /* -0.956481934 */,
PRESHIFT(0x0ff0a000) /* 0.996246338 */,
PRESHIFT(0x02cbf000) /* 0.174789429 */,
PRESHIFT(0x0266e000) /* 0.150115967 */,
PRESHIFT(0x00120000) /* 0.004394531 */,
PRESHIFT(0x00662000) /* 0.024932861 */,
-PRESHIFT(0x0007f000) /* -0.001937866 */,
PRESHIFT(0x0006f000) /* 0.001693726 */,
PRESHIFT(0x00006000) /* 0.000091553 */ },
{ -PRESHIFT(0x00005000) /* -0.000076294 */, /* 16 */
-PRESHIFT(0x00068000) /* -0.001586914 */,
PRESHIFT(0x00092000) /* 0.002227783 */,
-PRESHIFT(0x0061f000) /* -0.023910522 */,
-PRESHIFT(0x0002d000) /* -0.000686646 */,
-PRESHIFT(0x025ff000) /* -0.148422241 */,
-PRESHIFT(0x026f7000) /* -0.152206421 */,
-PRESHIFT(0x0fa13000) /* -0.976852417 */,
PRESHIFT(0x0fa13000) /* 0.976852417 */,
PRESHIFT(0x026f7000) /* 0.152206421 */,
PRESHIFT(0x025ff000) /* 0.148422241 */,
PRESHIFT(0x0002d000) /* 0.000686646 */,
PRESHIFT(0x0061f000) /* 0.023910522 */,
-PRESHIFT(0x00092000) /* -0.002227783 */,
PRESHIFT(0x00068000) /* 0.001586914 */,
PRESHIFT(0x00005000) /* 0.000076294 */,
-PRESHIFT(0x00005000) /* -0.000076294 */,
-PRESHIFT(0x00068000) /* -0.001586914 */,
PRESHIFT(0x00092000) /* 0.002227783 */,
-PRESHIFT(0x0061f000) /* -0.023910522 */,
-PRESHIFT(0x0002d000) /* -0.000686646 */,
-PRESHIFT(0x025ff000) /* -0.148422241 */,
-PRESHIFT(0x026f7000) /* -0.152206421 */,
-PRESHIFT(0x0fa13000) /* -0.976852417 */,
PRESHIFT(0x0fa13000) /* 0.976852417 */,
PRESHIFT(0x026f7000) /* 0.152206421 */,
PRESHIFT(0x025ff000) /* 0.148422241 */,
PRESHIFT(0x0002d000) /* 0.000686646 */,
PRESHIFT(0x0061f000) /* 0.023910522 */,
-PRESHIFT(0x00092000) /* -0.002227783 */,
PRESHIFT(0x00068000) /* 0.001586914 */,
PRESHIFT(0x00005000) /* 0.000076294 */ }
--- NEW FILE: synth.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: synth.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include "fixed.h"
# include "frame.h"
# include "synth.h"
/*
* NAME: synth->init()
* DESCRIPTION: initialize synth struct
*/
void mad_synth_init(struct mad_synth *synth)
{
mad_synth_mute(synth);
synth->phase = 0;
synth->pcm.samplerate = 0;
synth->pcm.channels = 0;
synth->pcm.length = 0;
}
/*
* NAME: synth->mute()
* DESCRIPTION: zero all polyphase filterbank values, resetting synthesis
*/
void mad_synth_mute(struct mad_synth *synth)
{
unsigned int ch, s, v;
for (ch = 0; ch < 2; ++ch) {
for (s = 0; s < 16; ++s) {
for (v = 0; v < 8; ++v) {
synth->filter[ch][0][0][s][v] = synth->filter[ch][0][1][s][v] =
synth->filter[ch][1][0][s][v] = synth->filter[ch][1][1][s][v] = 0;
}
}
}
}
/*
* An optional optimization called here the Subband Synthesis Optimization
* (SSO) improves the performance of subband synthesis at the expense of
* accuracy.
*
* The idea is to simplify 32x32->64-bit multiplication to 32x32->32 such
* that extra scaling and rounding are not necessary. This often allows the
* compiler to use faster 32-bit multiply-accumulate instructions instead of
* explicit 64-bit multiply, shift, and add instructions.
*
* SSO works like this: a full 32x32->64-bit multiply of two mad_fixed_t
* values requires the result to be right-shifted 28 bits to be properly
* scaled to the same fixed-point format. Right shifts can be applied at any
* time to either operand or to the result, so the optimization involves
* careful placement of these shifts to minimize the loss of accuracy.
*
* First, a 14-bit shift is applied with rounding at compile-time to the D[]
* table of coefficients for the subband synthesis window. This only loses 2
* bits of accuracy because the lower 12 bits are always zero. A second
* 12-bit shift occurs after the DCT calculation. This loses 12 bits of
* accuracy. Finally, a third 2-bit shift occurs just before the sample is
* saved in the PCM buffer. 14 + 12 + 2 == 28 bits.
*/
/* FPM_DEFAULT without OPT_SSO will actually lose accuracy and performance */
# if defined(FPM_DEFAULT) && !defined(OPT_SSO)
# define OPT_SSO
# endif
/* second SSO shift, with rounding */
# if defined(OPT_SSO)
# define SHIFT(x) (((x) + (1L << 11)) >> 12)
# else
# define SHIFT(x) (x)
# endif
/* possible DCT speed optimization */
# if defined(OPT_SPEED) && defined(MAD_F_MLX)
# define OPT_DCTO
# define MUL(x, y) \
({ mad_fixed64hi_t hi; \
mad_fixed64lo_t lo; \
MAD_F_MLX(hi, lo, (x), (y)); \
hi << (32 - MAD_F_SCALEBITS - 3); \
})
# else
# undef OPT_DCTO
# define MUL(x, y) mad_f_mul((x), (y))
# endif
/*
* NAME: dct32()
* DESCRIPTION: perform fast in[32]->out[32] DCT
*/
static
void dct32(mad_fixed_t const in[32], unsigned int slot,
mad_fixed_t lo[16][8], mad_fixed_t hi[16][8])
{
mad_fixed_t t0, t1, t2, t3, t4, t5, t6, t7;
mad_fixed_t t8, t9, t10, t11, t12, t13, t14, t15;
mad_fixed_t t16, t17, t18, t19, t20, t21, t22, t23;
mad_fixed_t t24, t25, t26, t27, t28, t29, t30, t31;
mad_fixed_t t32, t33, t34, t35, t36, t37, t38, t39;
mad_fixed_t t40, t41, t42, t43, t44, t45, t46, t47;
mad_fixed_t t48, t49, t50, t51, t52, t53, t54, t55;
mad_fixed_t t56, t57, t58, t59, t60, t61, t62, t63;
mad_fixed_t t64, t65, t66, t67, t68, t69, t70, t71;
mad_fixed_t t72, t73, t74, t75, t76, t77, t78, t79;
mad_fixed_t t80, t81, t82, t83, t84, t85, t86, t87;
mad_fixed_t t88, t89, t90, t91, t92, t93, t94, t95;
mad_fixed_t t96, t97, t98, t99, t100, t101, t102, t103;
mad_fixed_t t104, t105, t106, t107, t108, t109, t110, t111;
mad_fixed_t t112, t113, t114, t115, t116, t117, t118, t119;
mad_fixed_t t120, t121, t122, t123, t124, t125, t126, t127;
mad_fixed_t t128, t129, t130, t131, t132, t133, t134, t135;
mad_fixed_t t136, t137, t138, t139, t140, t141, t142, t143;
mad_fixed_t t144, t145, t146, t147, t148, t149, t150, t151;
mad_fixed_t t152, t153, t154, t155, t156, t157, t158, t159;
mad_fixed_t t160, t161, t162, t163, t164, t165, t166, t167;
mad_fixed_t t168, t169, t170, t171, t172, t173, t174, t175;
mad_fixed_t t176;
/* costab[i] = cos(PI / (2 * 32) * i) */
# if defined(OPT_DCTO)
# define costab1 MAD_F(0x7fd8878e)
# define costab2 MAD_F(0x7f62368f)
# define costab3 MAD_F(0x7e9d55fc)
# define costab4 MAD_F(0x7d8a5f40)
# define costab5 MAD_F(0x7c29fbee)
# define costab6 MAD_F(0x7a7d055b)
# define costab7 MAD_F(0x78848414)
# define costab8 MAD_F(0x7641af3d)
# define costab9 MAD_F(0x73b5ebd1)
# define costab10 MAD_F(0x70e2cbc6)
# define costab11 MAD_F(0x6dca0d14)
# define costab12 MAD_F(0x6a6d98a4)
# define costab13 MAD_F(0x66cf8120)
# define costab14 MAD_F(0x62f201ac)
# define costab15 MAD_F(0x5ed77c8a)
# define costab16 MAD_F(0x5a82799a)
# define costab17 MAD_F(0x55f5a4d2)
# define costab18 MAD_F(0x5133cc94)
# define costab19 MAD_F(0x4c3fdff4)
# define costab20 MAD_F(0x471cece7)
# define costab21 MAD_F(0x41ce1e65)
# define costab22 MAD_F(0x3c56ba70)
# define costab23 MAD_F(0x36ba2014)
# define costab24 MAD_F(0x30fbc54d)
# define costab25 MAD_F(0x2b1f34eb)
# define costab26 MAD_F(0x25280c5e)
# define costab27 MAD_F(0x1f19f97b)
# define costab28 MAD_F(0x18f8b83c)
# define costab29 MAD_F(0x12c8106f)
# define costab30 MAD_F(0x0c8bd35e)
# define costab31 MAD_F(0x0647d97c)
# else
# define costab1 MAD_F(0x0ffb10f2) /* 0.998795456 */
# define costab2 MAD_F(0x0fec46d2) /* 0.995184727 */
# define costab3 MAD_F(0x0fd3aac0) /* 0.989176510 */
# define costab4 MAD_F(0x0fb14be8) /* 0.980785280 */
# define costab5 MAD_F(0x0f853f7e) /* 0.970031253 */
# define costab6 MAD_F(0x0f4fa0ab) /* 0.956940336 */
# define costab7 MAD_F(0x0f109082) /* 0.941544065 */
# define costab8 MAD_F(0x0ec835e8) /* 0.923879533 */
# define costab9 MAD_F(0x0e76bd7a) /* 0.903989293 */
# define costab10 MAD_F(0x0e1c5979) /* 0.881921264 */
# define costab11 MAD_F(0x0db941a3) /* 0.857728610 */
# define costab12 MAD_F(0x0d4db315) /* 0.831469612 */
# define costab13 MAD_F(0x0cd9f024) /* 0.803207531 */
# define costab14 MAD_F(0x0c5e4036) /* 0.773010453 */
# define costab15 MAD_F(0x0bdaef91) /* 0.740951125 */
# define costab16 MAD_F(0x0b504f33) /* 0.707106781 */
# define costab17 MAD_F(0x0abeb49a) /* 0.671558955 */
# define costab18 MAD_F(0x0a267993) /* 0.634393284 */
# define costab19 MAD_F(0x0987fbfe) /* 0.595699304 */
# define costab20 MAD_F(0x08e39d9d) /* 0.555570233 */
# define costab21 MAD_F(0x0839c3cd) /* 0.514102744 */
# define costab22 MAD_F(0x078ad74e) /* 0.471396737 */
# define costab23 MAD_F(0x06d74402) /* 0.427555093 */
# define costab24 MAD_F(0x061f78aa) /* 0.382683432 */
# define costab25 MAD_F(0x0563e69d) /* 0.336889853 */
# define costab26 MAD_F(0x04a5018c) /* 0.290284677 */
# define costab27 MAD_F(0x03e33f2f) /* 0.242980180 */
# define costab28 MAD_F(0x031f1708) /* 0.195090322 */
# define costab29 MAD_F(0x0259020e) /* 0.146730474 */
# define costab30 MAD_F(0x01917a6c) /* 0.098017140 */
# define costab31 MAD_F(0x00c8fb30) /* 0.049067674 */
# endif
t0 = in[0] + in[31]; t16 = MUL(in[0] - in[31], costab1);
t1 = in[15] + in[16]; t17 = MUL(in[15] - in[16], costab31);
t41 = t16 + t17;
t59 = MUL(t16 - t17, costab2);
t33 = t0 + t1;
t50 = MUL(t0 - t1, costab2);
t2 = in[7] + in[24]; t18 = MUL(in[7] - in[24], costab15);
t3 = in[8] + in[23]; t19 = MUL(in[8] - in[23], costab17);
t42 = t18 + t19;
t60 = MUL(t18 - t19, costab30);
t34 = t2 + t3;
t51 = MUL(t2 - t3, costab30);
t4 = in[3] + in[28]; t20 = MUL(in[3] - in[28], costab7);
t5 = in[12] + in[19]; t21 = MUL(in[12] - in[19], costab25);
t43 = t20 + t21;
t61 = MUL(t20 - t21, costab14);
t35 = t4 + t5;
t52 = MUL(t4 - t5, costab14);
t6 = in[4] + in[27]; t22 = MUL(in[4] - in[27], costab9);
t7 = in[11] + in[20]; t23 = MUL(in[11] - in[20], costab23);
t44 = t22 + t23;
t62 = MUL(t22 - t23, costab18);
t36 = t6 + t7;
t53 = MUL(t6 - t7, costab18);
t8 = in[1] + in[30]; t24 = MUL(in[1] - in[30], costab3);
t9 = in[14] + in[17]; t25 = MUL(in[14] - in[17], costab29);
t45 = t24 + t25;
t63 = MUL(t24 - t25, costab6);
t37 = t8 + t9;
t54 = MUL(t8 - t9, costab6);
t10 = in[6] + in[25]; t26 = MUL(in[6] - in[25], costab13);
t11 = in[9] + in[22]; t27 = MUL(in[9] - in[22], costab19);
t46 = t26 + t27;
t64 = MUL(t26 - t27, costab26);
t38 = t10 + t11;
t55 = MUL(t10 - t11, costab26);
t12 = in[2] + in[29]; t28 = MUL(in[2] - in[29], costab5);
t13 = in[13] + in[18]; t29 = MUL(in[13] - in[18], costab27);
t47 = t28 + t29;
t65 = MUL(t28 - t29, costab10);
t39 = t12 + t13;
t56 = MUL(t12 - t13, costab10);
t14 = in[5] + in[26]; t30 = MUL(in[5] - in[26], costab11);
t15 = in[10] + in[21]; t31 = MUL(in[10] - in[21], costab21);
t48 = t30 + t31;
t66 = MUL(t30 - t31, costab22);
t40 = t14 + t15;
t57 = MUL(t14 - t15, costab22);
t69 = t33 + t34; t89 = MUL(t33 - t34, costab4);
t70 = t35 + t36; t90 = MUL(t35 - t36, costab28);
t71 = t37 + t38; t91 = MUL(t37 - t38, costab12);
t72 = t39 + t40; t92 = MUL(t39 - t40, costab20);
t73 = t41 + t42; t94 = MUL(t41 - t42, costab4);
t74 = t43 + t44; t95 = MUL(t43 - t44, costab28);
t75 = t45 + t46; t96 = MUL(t45 - t46, costab12);
t76 = t47 + t48; t97 = MUL(t47 - t48, costab20);
t78 = t50 + t51; t100 = MUL(t50 - t51, costab4);
t79 = t52 + t53; t101 = MUL(t52 - t53, costab28);
t80 = t54 + t55; t102 = MUL(t54 - t55, costab12);
t81 = t56 + t57; t103 = MUL(t56 - t57, costab20);
t83 = t59 + t60; t106 = MUL(t59 - t60, costab4);
t84 = t61 + t62; t107 = MUL(t61 - t62, costab28);
t85 = t63 + t64; t108 = MUL(t63 - t64, costab12);
t86 = t65 + t66; t109 = MUL(t65 - t66, costab20);
t113 = t69 + t70;
t114 = t71 + t72;
/* 0 */ hi[15][slot] = SHIFT(t113 + t114);
/* 16 */ lo[ 0][slot] = SHIFT(MUL(t113 - t114, costab16));
t115 = t73 + t74;
t116 = t75 + t76;
t32 = t115 + t116;
/* 1 */ hi[14][slot] = SHIFT(t32);
t118 = t78 + t79;
t119 = t80 + t81;
t58 = t118 + t119;
/* 2 */ hi[13][slot] = SHIFT(t58);
t121 = t83 + t84;
t122 = t85 + t86;
t67 = t121 + t122;
t49 = (t67 * 2) - t32;
/* 3 */ hi[12][slot] = SHIFT(t49);
t125 = t89 + t90;
t126 = t91 + t92;
t93 = t125 + t126;
/* 4 */ hi[11][slot] = SHIFT(t93);
t128 = t94 + t95;
t129 = t96 + t97;
t98 = t128 + t129;
t68 = (t98 * 2) - t49;
/* 5 */ hi[10][slot] = SHIFT(t68);
t132 = t100 + t101;
t133 = t102 + t103;
t104 = t132 + t133;
t82 = (t104 * 2) - t58;
/* 6 */ hi[ 9][slot] = SHIFT(t82);
t136 = t106 + t107;
t137 = t108 + t109;
t110 = t136 + t137;
t87 = (t110 * 2) - t67;
t77 = (t87 * 2) - t68;
/* 7 */ hi[ 8][slot] = SHIFT(t77);
t141 = MUL(t69 - t70, costab8);
t142 = MUL(t71 - t72, costab24);
t143 = t141 + t142;
/* 8 */ hi[ 7][slot] = SHIFT(t143);
/* 24 */ lo[ 8][slot] =
SHIFT((MUL(t141 - t142, costab16) * 2) - t143);
t144 = MUL(t73 - t74, costab8);
t145 = MUL(t75 - t76, costab24);
t146 = t144 + t145;
t88 = (t146 * 2) - t77;
/* 9 */ hi[ 6][slot] = SHIFT(t88);
t148 = MUL(t78 - t79, costab8);
t149 = MUL(t80 - t81, costab24);
t150 = t148 + t149;
t105 = (t150 * 2) - t82;
/* 10 */ hi[ 5][slot] = SHIFT(t105);
t152 = MUL(t83 - t84, costab8);
t153 = MUL(t85 - t86, costab24);
t154 = t152 + t153;
t111 = (t154 * 2) - t87;
t99 = (t111 * 2) - t88;
/* 11 */ hi[ 4][slot] = SHIFT(t99);
t157 = MUL(t89 - t90, costab8);
t158 = MUL(t91 - t92, costab24);
t159 = t157 + t158;
t127 = (t159 * 2) - t93;
/* 12 */ hi[ 3][slot] = SHIFT(t127);
t160 = (MUL(t125 - t126, costab16) * 2) - t127;
/* 20 */ lo[ 4][slot] = SHIFT(t160);
/* 28 */ lo[12][slot] =
SHIFT((((MUL(t157 - t158, costab16) * 2) - t159) * 2) - t160);
t161 = MUL(t94 - t95, costab8);
t162 = MUL(t96 - t97, costab24);
t163 = t161 + t162;
t130 = (t163 * 2) - t98;
t112 = (t130 * 2) - t99;
/* 13 */ hi[ 2][slot] = SHIFT(t112);
t164 = (MUL(t128 - t129, costab16) * 2) - t130;
t166 = MUL(t100 - t101, costab8);
t167 = MUL(t102 - t103, costab24);
t168 = t166 + t167;
t134 = (t168 * 2) - t104;
t120 = (t134 * 2) - t105;
/* 14 */ hi[ 1][slot] = SHIFT(t120);
t135 = (MUL(t118 - t119, costab16) * 2) - t120;
/* 18 */ lo[ 2][slot] = SHIFT(t135);
t169 = (MUL(t132 - t133, costab16) * 2) - t134;
t151 = (t169 * 2) - t135;
/* 22 */ lo[ 6][slot] = SHIFT(t151);
t170 = (((MUL(t148 - t149, costab16) * 2) - t150) * 2) - t151;
/* 26 */ lo[10][slot] = SHIFT(t170);
/* 30 */ lo[14][slot] =
SHIFT((((((MUL(t166 - t167, costab16) * 2) -
t168) * 2) - t169) * 2) - t170);
t171 = MUL(t106 - t107, costab8);
t172 = MUL(t108 - t109, costab24);
t173 = t171 + t172;
t138 = (t173 * 2) - t110;
t123 = (t138 * 2) - t111;
t139 = (MUL(t121 - t122, costab16) * 2) - t123;
t117 = (t123 * 2) - t112;
/* 15 */ hi[ 0][slot] = SHIFT(t117);
t124 = (MUL(t115 - t116, costab16) * 2) - t117;
/* 17 */ lo[ 1][slot] = SHIFT(t124);
t131 = (t139 * 2) - t124;
/* 19 */ lo[ 3][slot] = SHIFT(t131);
t140 = (t164 * 2) - t131;
/* 21 */ lo[ 5][slot] = SHIFT(t140);
t174 = (MUL(t136 - t137, costab16) * 2) - t138;
t155 = (t174 * 2) - t139;
t147 = (t155 * 2) - t140;
/* 23 */ lo[ 7][slot] = SHIFT(t147);
t156 = (((MUL(t144 - t145, costab16) * 2) - t146) * 2) - t147;
/* 25 */ lo[ 9][slot] = SHIFT(t156);
t175 = (((MUL(t152 - t153, costab16) * 2) - t154) * 2) - t155;
t165 = (t175 * 2) - t156;
/* 27 */ lo[11][slot] = SHIFT(t165);
t176 = (((((MUL(t161 - t162, costab16) * 2) -
t163) * 2) - t164) * 2) - t165;
/* 29 */ lo[13][slot] = SHIFT(t176);
/* 31 */ lo[15][slot] =
SHIFT((((((((MUL(t171 - t172, costab16) * 2) -
t173) * 2) - t174) * 2) - t175) * 2) - t176);
/*
* Totals:
* 80 multiplies
* 80 additions
* 119 subtractions
* 49 shifts (not counting SSO)
*/
}
# undef MUL
# undef SHIFT
/* third SSO shift and/or D[] optimization preshift */
# if defined(OPT_SSO)
# if MAD_F_FRACBITS != 28
# error "MAD_F_FRACBITS must be 28 to use OPT_SSO"
# endif
# define ML0(hi, lo, x, y) ((lo) = (x) * (y))
# define MLA(hi, lo, x, y) ((lo) += (x) * (y))
# define MLN(hi, lo) ((lo) = -(lo))
# define MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo))
# define SHIFT(x) ((x) >> 2)
# define PRESHIFT(x) ((MAD_F(x) + (1L << 13)) >> 14)
# else
# define ML0(hi, lo, x, y) MAD_F_ML0((hi), (lo), (x), (y))
# define MLA(hi, lo, x, y) MAD_F_MLA((hi), (lo), (x), (y))
# define MLN(hi, lo) MAD_F_MLN((hi), (lo))
# define MLZ(hi, lo) MAD_F_MLZ((hi), (lo))
# define SHIFT(x) (x)
# if defined(MAD_F_SCALEBITS)
# undef MAD_F_SCALEBITS
# define MAD_F_SCALEBITS (MAD_F_FRACBITS - 12)
# define PRESHIFT(x) (MAD_F(x) >> 12)
# else
# define PRESHIFT(x) MAD_F(x)
# endif
# endif
static
mad_fixed_t const D[17][32] = {
# include "D.dat"
};
# if defined(ASO_SYNTH)
void synth_full(struct mad_synth *, struct mad_frame const *,
unsigned int, unsigned int);
# else
/*
* NAME: synth->full()
* DESCRIPTION: perform full frequency PCM synthesis
*/
static
void synth_full(struct mad_synth *synth, struct mad_frame const *frame,
unsigned int nch, unsigned int ns)
{
unsigned int phase, ch, s, sb, pe, po;
mad_fixed_t *pcm1, *pcm2, (*filter)[2][2][16][8];
mad_fixed_t const (*sbsample)[36][32];
register mad_fixed_t (*fe)[8], (*fx)[8], (*fo)[8];
register mad_fixed_t const (*Dptr)[32], *ptr;
register mad_fixed64hi_t hi;
register mad_fixed64lo_t lo;
for (ch = 0; ch < nch; ++ch) {
sbsample = &frame->sbsample[ch];
filter = &synth->filter[ch];
phase = synth->phase;
pcm1 = synth->pcm.samples[ch];
for (s = 0; s < ns; ++s) {
dct32((*sbsample)[s], phase >> 1,
(*filter)[0][phase & 1], (*filter)[1][phase & 1]);
pe = phase & ~1;
po = ((phase - 1) & 0xf) | 1;
/* calculate 32 samples */
fe = &(*filter)[0][ phase & 1][0];
fx = &(*filter)[0][~phase & 1][0];
fo = &(*filter)[1][~phase & 1][0];
Dptr = &D[0];
ptr = *Dptr + po;
ML0(hi, lo, (*fx)[0], ptr[ 0]);
MLA(hi, lo, (*fx)[1], ptr[14]);
MLA(hi, lo, (*fx)[2], ptr[12]);
MLA(hi, lo, (*fx)[3], ptr[10]);
MLA(hi, lo, (*fx)[4], ptr[ 8]);
MLA(hi, lo, (*fx)[5], ptr[ 6]);
MLA(hi, lo, (*fx)[6], ptr[ 4]);
MLA(hi, lo, (*fx)[7], ptr[ 2]);
MLN(hi, lo);
ptr = *Dptr + pe;
MLA(hi, lo, (*fe)[0], ptr[ 0]);
MLA(hi, lo, (*fe)[1], ptr[14]);
MLA(hi, lo, (*fe)[2], ptr[12]);
MLA(hi, lo, (*fe)[3], ptr[10]);
MLA(hi, lo, (*fe)[4], ptr[ 8]);
MLA(hi, lo, (*fe)[5], ptr[ 6]);
MLA(hi, lo, (*fe)[6], ptr[ 4]);
MLA(hi, lo, (*fe)[7], ptr[ 2]);
*pcm1++ = SHIFT(MLZ(hi, lo));
pcm2 = pcm1 + 30;
for (sb = 1; sb < 16; ++sb) {
++fe;
++Dptr;
/* D[32 - sb][i] == -D[sb][31 - i] */
ptr = *Dptr + po;
ML0(hi, lo, (*fo)[0], ptr[ 0]);
MLA(hi, lo, (*fo)[1], ptr[14]);
MLA(hi, lo, (*fo)[2], ptr[12]);
MLA(hi, lo, (*fo)[3], ptr[10]);
MLA(hi, lo, (*fo)[4], ptr[ 8]);
MLA(hi, lo, (*fo)[5], ptr[ 6]);
MLA(hi, lo, (*fo)[6], ptr[ 4]);
MLA(hi, lo, (*fo)[7], ptr[ 2]);
MLN(hi, lo);
ptr = *Dptr + pe;
MLA(hi, lo, (*fe)[7], ptr[ 2]);
MLA(hi, lo, (*fe)[6], ptr[ 4]);
MLA(hi, lo, (*fe)[5], ptr[ 6]);
MLA(hi, lo, (*fe)[4], ptr[ 8]);
MLA(hi, lo, (*fe)[3], ptr[10]);
MLA(hi, lo, (*fe)[2], ptr[12]);
MLA(hi, lo, (*fe)[1], ptr[14]);
MLA(hi, lo, (*fe)[0], ptr[ 0]);
*pcm1++ = SHIFT(MLZ(hi, lo));
ptr = *Dptr - pe;
ML0(hi, lo, (*fe)[0], ptr[31 - 16]);
MLA(hi, lo, (*fe)[1], ptr[31 - 14]);
MLA(hi, lo, (*fe)[2], ptr[31 - 12]);
MLA(hi, lo, (*fe)[3], ptr[31 - 10]);
MLA(hi, lo, (*fe)[4], ptr[31 - 8]);
MLA(hi, lo, (*fe)[5], ptr[31 - 6]);
MLA(hi, lo, (*fe)[6], ptr[31 - 4]);
MLA(hi, lo, (*fe)[7], ptr[31 - 2]);
ptr = *Dptr - po;
MLA(hi, lo, (*fo)[7], ptr[31 - 2]);
MLA(hi, lo, (*fo)[6], ptr[31 - 4]);
MLA(hi, lo, (*fo)[5], ptr[31 - 6]);
MLA(hi, lo, (*fo)[4], ptr[31 - 8]);
MLA(hi, lo, (*fo)[3], ptr[31 - 10]);
MLA(hi, lo, (*fo)[2], ptr[31 - 12]);
MLA(hi, lo, (*fo)[1], ptr[31 - 14]);
MLA(hi, lo, (*fo)[0], ptr[31 - 16]);
*pcm2-- = SHIFT(MLZ(hi, lo));
++fo;
}
++Dptr;
ptr = *Dptr + po;
ML0(hi, lo, (*fo)[0], ptr[ 0]);
MLA(hi, lo, (*fo)[1], ptr[14]);
MLA(hi, lo, (*fo)[2], ptr[12]);
MLA(hi, lo, (*fo)[3], ptr[10]);
MLA(hi, lo, (*fo)[4], ptr[ 8]);
MLA(hi, lo, (*fo)[5], ptr[ 6]);
MLA(hi, lo, (*fo)[6], ptr[ 4]);
MLA(hi, lo, (*fo)[7], ptr[ 2]);
*pcm1 = SHIFT(-MLZ(hi, lo));
pcm1 += 16;
phase = (phase + 1) % 16;
}
}
}
# endif
/*
* NAME: synth->half()
* DESCRIPTION: perform half frequency PCM synthesis
*/
static
void synth_half(struct mad_synth *synth, struct mad_frame const *frame,
unsigned int nch, unsigned int ns)
{
unsigned int phase, ch, s, sb, pe, po;
mad_fixed_t *pcm1, *pcm2, (*filter)[2][2][16][8];
mad_fixed_t const (*sbsample)[36][32];
register mad_fixed_t (*fe)[8], (*fx)[8], (*fo)[8];
register mad_fixed_t const (*Dptr)[32], *ptr;
register mad_fixed64hi_t hi;
register mad_fixed64lo_t lo;
for (ch = 0; ch < nch; ++ch) {
sbsample = &frame->sbsample[ch];
filter = &synth->filter[ch];
phase = synth->phase;
pcm1 = synth->pcm.samples[ch];
for (s = 0; s < ns; ++s) {
dct32((*sbsample)[s], phase >> 1,
(*filter)[0][phase & 1], (*filter)[1][phase & 1]);
pe = phase & ~1;
po = ((phase - 1) & 0xf) | 1;
/* calculate 16 samples */
fe = &(*filter)[0][ phase & 1][0];
fx = &(*filter)[0][~phase & 1][0];
fo = &(*filter)[1][~phase & 1][0];
Dptr = &D[0];
ptr = *Dptr + po;
ML0(hi, lo, (*fx)[0], ptr[ 0]);
MLA(hi, lo, (*fx)[1], ptr[14]);
MLA(hi, lo, (*fx)[2], ptr[12]);
MLA(hi, lo, (*fx)[3], ptr[10]);
MLA(hi, lo, (*fx)[4], ptr[ 8]);
MLA(hi, lo, (*fx)[5], ptr[ 6]);
MLA(hi, lo, (*fx)[6], ptr[ 4]);
MLA(hi, lo, (*fx)[7], ptr[ 2]);
MLN(hi, lo);
ptr = *Dptr + pe;
MLA(hi, lo, (*fe)[0], ptr[ 0]);
MLA(hi, lo, (*fe)[1], ptr[14]);
MLA(hi, lo, (*fe)[2], ptr[12]);
MLA(hi, lo, (*fe)[3], ptr[10]);
MLA(hi, lo, (*fe)[4], ptr[ 8]);
MLA(hi, lo, (*fe)[5], ptr[ 6]);
MLA(hi, lo, (*fe)[6], ptr[ 4]);
MLA(hi, lo, (*fe)[7], ptr[ 2]);
*pcm1++ = SHIFT(MLZ(hi, lo));
pcm2 = pcm1 + 14;
for (sb = 1; sb < 16; ++sb) {
++fe;
++Dptr;
/* D[32 - sb][i] == -D[sb][31 - i] */
if (!(sb & 1)) {
ptr = *Dptr + po;
ML0(hi, lo, (*fo)[0], ptr[ 0]);
MLA(hi, lo, (*fo)[1], ptr[14]);
MLA(hi, lo, (*fo)[2], ptr[12]);
MLA(hi, lo, (*fo)[3], ptr[10]);
MLA(hi, lo, (*fo)[4], ptr[ 8]);
MLA(hi, lo, (*fo)[5], ptr[ 6]);
MLA(hi, lo, (*fo)[6], ptr[ 4]);
MLA(hi, lo, (*fo)[7], ptr[ 2]);
MLN(hi, lo);
ptr = *Dptr + pe;
MLA(hi, lo, (*fe)[7], ptr[ 2]);
MLA(hi, lo, (*fe)[6], ptr[ 4]);
MLA(hi, lo, (*fe)[5], ptr[ 6]);
MLA(hi, lo, (*fe)[4], ptr[ 8]);
MLA(hi, lo, (*fe)[3], ptr[10]);
MLA(hi, lo, (*fe)[2], ptr[12]);
MLA(hi, lo, (*fe)[1], ptr[14]);
MLA(hi, lo, (*fe)[0], ptr[ 0]);
*pcm1++ = SHIFT(MLZ(hi, lo));
ptr = *Dptr - po;
ML0(hi, lo, (*fo)[7], ptr[31 - 2]);
MLA(hi, lo, (*fo)[6], ptr[31 - 4]);
MLA(hi, lo, (*fo)[5], ptr[31 - 6]);
MLA(hi, lo, (*fo)[4], ptr[31 - 8]);
MLA(hi, lo, (*fo)[3], ptr[31 - 10]);
MLA(hi, lo, (*fo)[2], ptr[31 - 12]);
MLA(hi, lo, (*fo)[1], ptr[31 - 14]);
MLA(hi, lo, (*fo)[0], ptr[31 - 16]);
ptr = *Dptr - pe;
MLA(hi, lo, (*fe)[0], ptr[31 - 16]);
MLA(hi, lo, (*fe)[1], ptr[31 - 14]);
MLA(hi, lo, (*fe)[2], ptr[31 - 12]);
MLA(hi, lo, (*fe)[3], ptr[31 - 10]);
MLA(hi, lo, (*fe)[4], ptr[31 - 8]);
MLA(hi, lo, (*fe)[5], ptr[31 - 6]);
MLA(hi, lo, (*fe)[6], ptr[31 - 4]);
MLA(hi, lo, (*fe)[7], ptr[31 - 2]);
*pcm2-- = SHIFT(MLZ(hi, lo));
}
++fo;
}
++Dptr;
ptr = *Dptr + po;
ML0(hi, lo, (*fo)[0], ptr[ 0]);
MLA(hi, lo, (*fo)[1], ptr[14]);
MLA(hi, lo, (*fo)[2], ptr[12]);
MLA(hi, lo, (*fo)[3], ptr[10]);
MLA(hi, lo, (*fo)[4], ptr[ 8]);
MLA(hi, lo, (*fo)[5], ptr[ 6]);
MLA(hi, lo, (*fo)[6], ptr[ 4]);
MLA(hi, lo, (*fo)[7], ptr[ 2]);
*pcm1 = SHIFT(-MLZ(hi, lo));
pcm1 += 8;
phase = (phase + 1) % 16;
}
}
}
/*
* NAME: synth->frame()
* DESCRIPTION: perform PCM synthesis of frame subband samples
*/
void mad_synth_frame(struct mad_synth *synth, struct mad_frame const *frame)
{
unsigned int nch, ns;
void (*synth_frame)(struct mad_synth *, struct mad_frame const *,
unsigned int, unsigned int);
nch = MAD_NCHANNELS(&frame->header);
ns = MAD_NSBSAMPLES(&frame->header);
synth->pcm.samplerate = frame->header.samplerate;
synth->pcm.channels = nch;
synth->pcm.length = 32 * ns;
synth_frame = synth_full;
if (frame->options & MAD_OPTION_HALFSAMPLERATE) {
synth->pcm.samplerate /= 2;
synth->pcm.length /= 2;
synth_frame = synth_half;
}
synth_frame(synth, frame, nch, ns);
synth->phase = (synth->phase + ns) % 16;
}
--- NEW FILE: imdct_s.dat ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: imdct_s.dat,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
/* 0 */ { MAD_F(0x09bd7ca0) /* 0.608761429 */,
-MAD_F(0x0ec835e8) /* -0.923879533 */,
-MAD_F(0x0216a2a2) /* -0.130526192 */,
MAD_F(0x0fdcf549) /* 0.991444861 */,
-MAD_F(0x061f78aa) /* -0.382683432 */,
-MAD_F(0x0cb19346) /* -0.793353340 */ },
/* 6 */ { -MAD_F(0x0cb19346) /* -0.793353340 */,
MAD_F(0x061f78aa) /* 0.382683432 */,
MAD_F(0x0fdcf549) /* 0.991444861 */,
MAD_F(0x0216a2a2) /* 0.130526192 */,
-MAD_F(0x0ec835e8) /* -0.923879533 */,
-MAD_F(0x09bd7ca0) /* -0.608761429 */ },
/* 1 */ { MAD_F(0x061f78aa) /* 0.382683432 */,
-MAD_F(0x0ec835e8) /* -0.923879533 */,
MAD_F(0x0ec835e8) /* 0.923879533 */,
-MAD_F(0x061f78aa) /* -0.382683432 */,
-MAD_F(0x061f78aa) /* -0.382683432 */,
MAD_F(0x0ec835e8) /* 0.923879533 */ },
/* 7 */ { -MAD_F(0x0ec835e8) /* -0.923879533 */,
-MAD_F(0x061f78aa) /* -0.382683432 */,
MAD_F(0x061f78aa) /* 0.382683432 */,
MAD_F(0x0ec835e8) /* 0.923879533 */,
MAD_F(0x0ec835e8) /* 0.923879533 */,
MAD_F(0x061f78aa) /* 0.382683432 */ },
/* 2 */ { MAD_F(0x0216a2a2) /* 0.130526192 */,
-MAD_F(0x061f78aa) /* -0.382683432 */,
MAD_F(0x09bd7ca0) /* 0.608761429 */,
-MAD_F(0x0cb19346) /* -0.793353340 */,
MAD_F(0x0ec835e8) /* 0.923879533 */,
-MAD_F(0x0fdcf549) /* -0.991444861 */ },
/* 8 */ { -MAD_F(0x0fdcf549) /* -0.991444861 */,
-MAD_F(0x0ec835e8) /* -0.923879533 */,
-MAD_F(0x0cb19346) /* -0.793353340 */,
-MAD_F(0x09bd7ca0) /* -0.608761429 */,
-MAD_F(0x061f78aa) /* -0.382683432 */,
-MAD_F(0x0216a2a2) /* -0.130526192 */ }
--- NEW FILE: bit.c ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: bit.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# ifdef HAVE_LIMITS_H
# include <limits.h>
# else
# define CHAR_BIT 8
# endif
# include "bit.h"
/*
* This is the lookup table for computing the CRC-check word.
* As described in section 2.4.3.1 and depicted in Figure A.9
* of ISO/IEC 11172-3, the generator polynomial is:
*
* G(X) = X^16 + X^15 + X^2 + 1
*/
static
unsigned short const crc_table[256] = {
0x0000, 0x8005, 0x800f, 0x000a, 0x801b, 0x001e, 0x0014, 0x8011,
0x8033, 0x0036, 0x003c, 0x8039, 0x0028, 0x802d, 0x8027, 0x0022,
0x8063, 0x0066, 0x006c, 0x8069, 0x0078, 0x807d, 0x8077, 0x0072,
0x0050, 0x8055, 0x805f, 0x005a, 0x804b, 0x004e, 0x0044, 0x8041,
0x80c3, 0x00c6, 0x00cc, 0x80c9, 0x00d8, 0x80dd, 0x80d7, 0x00d2,
0x00f0, 0x80f5, 0x80ff, 0x00fa, 0x80eb, 0x00ee, 0x00e4, 0x80e1,
0x00a0, 0x80a5, 0x80af, 0x00aa, 0x80bb, 0x00be, 0x00b4, 0x80b1,
0x8093, 0x0096, 0x009c, 0x8099, 0x0088, 0x808d, 0x8087, 0x0082,
0x8183, 0x0186, 0x018c, 0x8189, 0x0198, 0x819d, 0x8197, 0x0192,
0x01b0, 0x81b5, 0x81bf, 0x01ba, 0x81ab, 0x01ae, 0x01a4, 0x81a1,
0x01e0, 0x81e5, 0x81ef, 0x01ea, 0x81fb, 0x01fe, 0x01f4, 0x81f1,
0x81d3, 0x01d6, 0x01dc, 0x81d9, 0x01c8, 0x81cd, 0x81c7, 0x01c2,
0x0140, 0x8145, 0x814f, 0x014a, 0x815b, 0x015e, 0x0154, 0x8151,
0x8173, 0x0176, 0x017c, 0x8179, 0x0168, 0x816d, 0x8167, 0x0162,
0x8123, 0x0126, 0x012c, 0x8129, 0x0138, 0x813d, 0x8137, 0x0132,
0x0110, 0x8115, 0x811f, 0x011a, 0x810b, 0x010e, 0x0104, 0x8101,
0x8303, 0x0306, 0x030c, 0x8309, 0x0318, 0x831d, 0x8317, 0x0312,
0x0330, 0x8335, 0x833f, 0x033a, 0x832b, 0x032e, 0x0324, 0x8321,
0x0360, 0x8365, 0x836f, 0x036a, 0x837b, 0x037e, 0x0374, 0x8371,
0x8353, 0x0356, 0x035c, 0x8359, 0x0348, 0x834d, 0x8347, 0x0342,
0x03c0, 0x83c5, 0x83cf, 0x03ca, 0x83db, 0x03de, 0x03d4, 0x83d1,
0x83f3, 0x03f6, 0x03fc, 0x83f9, 0x03e8, 0x83ed, 0x83e7, 0x03e2,
0x83a3, 0x03a6, 0x03ac, 0x83a9, 0x03b8, 0x83bd, 0x83b7, 0x03b2,
0x0390, 0x8395, 0x839f, 0x039a, 0x838b, 0x038e, 0x0384, 0x8381,
0x0280, 0x8285, 0x828f, 0x028a, 0x829b, 0x029e, 0x0294, 0x8291,
0x82b3, 0x02b6, 0x02bc, 0x82b9, 0x02a8, 0x82ad, 0x82a7, 0x02a2,
0x82e3, 0x02e6, 0x02ec, 0x82e9, 0x02f8, 0x82fd, 0x82f7, 0x02f2,
0x02d0, 0x82d5, 0x82df, 0x02da, 0x82cb, 0x02ce, 0x02c4, 0x82c1,
0x8243, 0x0246, 0x024c, 0x8249, 0x0258, 0x825d, 0x8257, 0x0252,
0x0270, 0x8275, 0x827f, 0x027a, 0x826b, 0x026e, 0x0264, 0x8261,
0x0220, 0x8225, 0x822f, 0x022a, 0x823b, 0x023e, 0x0234, 0x8231,
0x8213, 0x0216, 0x021c, 0x8219, 0x0208, 0x820d, 0x8207, 0x0202
};
# define CRC_POLY 0x8005
/*
* NAME: bit->init()
* DESCRIPTION: initialize bit pointer struct
*/
void mad_bit_init(struct mad_bitptr *bitptr, unsigned char const *byte)
{
bitptr->byte = byte;
bitptr->cache = 0;
bitptr->left = CHAR_BIT;
}
/*
* NAME: bit->length()
* DESCRIPTION: return number of bits between start and end points
*/
unsigned int mad_bit_length(struct mad_bitptr const *begin,
struct mad_bitptr const *end)
{
return begin->left +
CHAR_BIT * (end->byte - (begin->byte + 1)) + (CHAR_BIT - end->left);
}
/*
* NAME: bit->nextbyte()
* DESCRIPTION: return pointer to next unprocessed byte
*/
unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *bitptr)
{
return bitptr->left == CHAR_BIT ? bitptr->byte : bitptr->byte + 1;
}
/*
* NAME: bit->skip()
* DESCRIPTION: advance bit pointer
*/
void mad_bit_skip(struct mad_bitptr *bitptr, unsigned int len)
{
bitptr->byte += len / CHAR_BIT;
bitptr->left -= len % CHAR_BIT;
if (bitptr->left > CHAR_BIT) {
bitptr->byte++;
bitptr->left += CHAR_BIT;
}
if (bitptr->left < CHAR_BIT)
bitptr->cache = *bitptr->byte;
}
/*
* NAME: bit->read()
* DESCRIPTION: read an arbitrary number of bits and return their UIMSBF value
*/
unsigned long mad_bit_read(struct mad_bitptr *bitptr, unsigned int len)
{
register unsigned long value;
if (bitptr->left == CHAR_BIT)
bitptr->cache = *bitptr->byte;
if (len < bitptr->left) {
value = (bitptr->cache & ((1 << bitptr->left) - 1)) >>
(bitptr->left - len);
bitptr->left -= len;
return value;
}
/* remaining bits in current byte */
value = bitptr->cache & ((1 << bitptr->left) - 1);
len -= bitptr->left;
bitptr->byte++;
bitptr->left = CHAR_BIT;
/* more bytes */
while (len >= CHAR_BIT) {
value = (value << CHAR_BIT) | *bitptr->byte++;
len -= CHAR_BIT;
}
if (len > 0) {
bitptr->cache = *bitptr->byte;
value = (value << len) | (bitptr->cache >> (CHAR_BIT - len));
bitptr->left -= len;
}
return value;
}
# if 0
/*
* NAME: bit->write()
* DESCRIPTION: write an arbitrary number of bits
*/
void mad_bit_write(struct mad_bitptr *bitptr, unsigned int len,
unsigned long value)
{
unsigned char *ptr;
ptr = (unsigned char *) bitptr->byte;
/* ... */
}
# endif
/*
* NAME: bit->crc()
* DESCRIPTION: compute CRC-check word
*/
unsigned short mad_bit_crc(struct mad_bitptr bitptr, unsigned int len,
unsigned short init)
{
register unsigned int crc;
for (crc = init; len >= 32; len -= 32) {
register unsigned long data;
data = mad_bit_read(&bitptr, 32);
crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >> 24)) & 0xff];
crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >> 16)) & 0xff];
crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >> 8)) & 0xff];
crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >> 0)) & 0xff];
}
switch (len / 8) {
case 3: crc = (crc << 8) ^
crc_table[((crc >> 8) ^ mad_bit_read(&bitptr, 8)) & 0xff];
case 2: crc = (crc << 8) ^
crc_table[((crc >> 8) ^ mad_bit_read(&bitptr, 8)) & 0xff];
case 1: crc = (crc << 8) ^
crc_table[((crc >> 8) ^ mad_bit_read(&bitptr, 8)) & 0xff];
len %= 8;
case 0: break;
}
while (len--) {
register unsigned int msb;
msb = mad_bit_read(&bitptr, 1) ^ (crc >> 15);
crc <<= 1;
if (msb & 1)
crc ^= CRC_POLY;
}
return crc & 0xffff;
}
--- NEW FILE: Makefile.in ---
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# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
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install_sh_DATA = $(install_sh) -c -m 644
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INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
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# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:
--- NEW FILE: synth.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: synth.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_SYNTH_H
# define LIBMAD_SYNTH_H
# include "fixed.h"
# include "frame.h"
struct mad_pcm {
unsigned int samplerate; /* sampling frequency (Hz) */
unsigned short channels; /* number of channels */
unsigned short length; /* number of samples per channel */
mad_fixed_t samples[2][1152]; /* PCM output samples [ch][sample] */
};
struct mad_synth {
mad_fixed_t filter[2][2][2][16][8]; /* polyphase filterbank outputs */
/* [ch][eo][peo][s][v] */
unsigned int phase; /* current processing phase */
struct mad_pcm pcm; /* PCM output */
};
/* single channel PCM selector */
enum {
MAD_PCM_CHANNEL_SINGLE = 0
};
/* dual channel PCM selector */
enum {
MAD_PCM_CHANNEL_DUAL_1 = 0,
MAD_PCM_CHANNEL_DUAL_2 = 1
};
/* stereo PCM selector */
enum {
MAD_PCM_CHANNEL_STEREO_LEFT = 0,
MAD_PCM_CHANNEL_STEREO_RIGHT = 1
};
void mad_synth_init(struct mad_synth *);
# define mad_synth_finish(synth) /* nothing */
void mad_synth_mute(struct mad_synth *);
void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
# endif
--- NEW FILE: xine_decoder.c ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* $Id: xine_decoder.c,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*
* stuff needed to turn libmad into a xine decoder plugin
*/
#include <stdlib.h>
#include <string.h>
#define LOG_MODULE "mad_decoder"
#define LOG_VERBOSE
/*
#define LOG
*/
#include "xine_internal.h"
#include "audio_out.h"
#include "buffer.h"
#include "frame.h"
#include "synth.h"
#include "xineutils.h"
#define INPUT_BUF_SIZE 16384
typedef struct {
audio_decoder_class_t decoder_class;
} mad_class_t;
typedef struct mad_decoder_s {
audio_decoder_t audio_decoder;
xine_stream_t *xstream;
int64_t pts;
struct mad_synth synth;
struct mad_stream stream;
struct mad_frame frame;
int output_sampling_rate;
int output_open;
int output_mode;
uint8_t buffer[INPUT_BUF_SIZE];
int bytes_in_buffer;
int preview_mode;
} mad_decoder_t;
static void mad_reset (audio_decoder_t *this_gen) {
mad_decoder_t *this = (mad_decoder_t *) this_gen;
mad_synth_finish (&this->synth);
mad_frame_finish (&this->frame);
mad_stream_finish(&this->stream);
this->pts = 0;
this->bytes_in_buffer = 0;
this->preview_mode = 0;
mad_synth_init (&this->synth);
mad_stream_init (&this->stream);
this->stream.options = MAD_OPTION_IGNORECRC;
mad_frame_init (&this->frame);
}
static void mad_discontinuity (audio_decoder_t *this_gen) {
mad_decoder_t *this = (mad_decoder_t *) this_gen;
this->pts = 0;
}
/* utility to scale and round samples to 16 bits */
static inline
signed int scale(mad_fixed_t sample)
{
/* round */
sample += (1L << (MAD_F_FRACBITS - 16));
/* clip */
if (sample >= MAD_F_ONE)
sample = MAD_F_ONE - 1;
else if (sample < -MAD_F_ONE)
sample = -MAD_F_ONE;
/* quantize */
return sample >> (MAD_F_FRACBITS + 1 - 16);
}
/*
static int head_check(mad_decoder_t *this) {
if( (this->header & 0xffe00000) != 0xffe00000)
return 0;
if(!((this->header>>17)&3))
return 0;
if( ((this->header>>12)&0xf) == 0xf)
return 0;
if( ((this->header>>10)&0x3) == 0x3 )
return 0;
return 1;
}
*/
static void mad_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
mad_decoder_t *this = (mad_decoder_t *) this_gen;
lprintf ("decode data, decoder_flags: %d\n", buf->decoder_flags);
if (buf->size>(INPUT_BUF_SIZE-this->bytes_in_buffer)) {
xprintf (this->xstream->xine, XINE_VERBOSITY_DEBUG,
"libmad: ALERT input buffer too small (%d bytes, %d avail)!\n",
buf->size, INPUT_BUF_SIZE-this->bytes_in_buffer);
buf->size = INPUT_BUF_SIZE-this->bytes_in_buffer;
}
if ((buf->decoder_flags & BUF_FLAG_HEADER) == 0) {
/* reset decoder on leaving preview mode */
if ((buf->decoder_flags & BUF_FLAG_PREVIEW) == 0) {
if (this->preview_mode) {
mad_reset (this_gen);
}
} else {
this->preview_mode = 1;
}
xine_fast_memcpy (&this->buffer[this->bytes_in_buffer],
buf->content, buf->size);
this->bytes_in_buffer += buf->size;
/*
printf ("libmad: decode data - doing it\n");
*/
mad_stream_buffer (&this->stream, this->buffer,
this->bytes_in_buffer);
while (1) {
if (mad_frame_decode (&this->frame, &this->stream) != 0) {
if (this->stream.next_frame) {
int num_bytes =
this->buffer + this->bytes_in_buffer - this->stream.next_frame;
/* printf("libmad: MAD_ERROR_BUFLEN\n"); */
memmove(this->buffer, this->stream.next_frame, num_bytes);
this->bytes_in_buffer = num_bytes;
}
switch (this->stream.error) {
case MAD_ERROR_BUFLEN:
return;
default:
mad_stream_buffer (&this->stream, this->buffer,
this->bytes_in_buffer);
}
} else {
int mode = (this->frame.header.mode == MAD_MODE_SINGLE_CHANNEL) ? AO_CAP_MODE_MONO : AO_CAP_MODE_STEREO;
if (!this->output_open
|| (this->output_sampling_rate != this->frame.header.samplerate)
|| (this->output_mode != mode)) {
lprintf ("audio sample rate %d mode %08x\n", this->frame.header.samplerate, mode);
/* the mpeg audio demuxer can set audio bitrate */
if (! _x_stream_info_get(this->xstream, XINE_STREAM_INFO_AUDIO_BITRATE)) {
_x_stream_info_set(this->xstream, XINE_STREAM_INFO_AUDIO_BITRATE,
this->frame.header.bitrate);
}
/* the mpeg audio demuxer can set this meta info */
if (! _x_meta_info_get(this->xstream, XINE_META_INFO_AUDIOCODEC)) {
switch (this->frame.header.layer) {
case MAD_LAYER_I:
_x_meta_info_set_utf8(this->xstream, XINE_META_INFO_AUDIOCODEC,
"MPEG audio layer 1 (lib: MAD)");
break;
case MAD_LAYER_II:
_x_meta_info_set_utf8(this->xstream, XINE_META_INFO_AUDIOCODEC,
"MPEG audio layer 2 (lib: MAD)");
break;
case MAD_LAYER_III:
_x_meta_info_set_utf8(this->xstream, XINE_META_INFO_AUDIOCODEC,
"MPEG audio layer 3 (lib: MAD)");
break;
default:
_x_meta_info_set_utf8(this->xstream, XINE_META_INFO_AUDIOCODEC,
"MPEG audio (lib: MAD)");
}
}
if (this->output_open) {
this->xstream->audio_out->close (this->xstream->audio_out, this->xstream);
this->output_open = 0;
}
if (!this->output_open) {
this->output_open = this->xstream->audio_out->open(this->xstream->audio_out,
this->xstream, 16,
this->frame.header.samplerate,
mode) ;
}
if (!this->output_open) {
return;
}
this->output_sampling_rate = this->frame.header.samplerate;
this->output_mode = mode;
}
mad_synth_frame (&this->synth, &this->frame);
if ( (buf->decoder_flags & BUF_FLAG_PREVIEW) == 0 ) {
unsigned int nchannels, nsamples;
mad_fixed_t const *left_ch, *right_ch;
struct mad_pcm *pcm = &this->synth.pcm;
audio_buffer_t *audio_buffer;
uint16_t *output;
audio_buffer = this->xstream->audio_out->get_buffer (this->xstream->audio_out);
output = audio_buffer->mem;
nchannels = pcm->channels;
nsamples = pcm->length;
left_ch = pcm->samples[0];
right_ch = pcm->samples[1];
while (nsamples--) {
/* output sample(s) in 16-bit signed little-endian PCM */
*output++ = scale(*left_ch++);
if (nchannels == 2)
*output++ = scale(*right_ch++);
}
audio_buffer->num_frames = pcm->length;
audio_buffer->vpts = buf->pts;
this->xstream->audio_out->put_buffer (this->xstream->audio_out, audio_buffer, this->xstream);
buf->pts = 0;
}
lprintf ("decode worked\n");
}
}
}
}
static void mad_dispose (audio_decoder_t *this_gen) {
mad_decoder_t *this = (mad_decoder_t *) this_gen;
mad_synth_finish (&this->synth);
mad_frame_finish (&this->frame);
mad_stream_finish(&this->stream);
if (this->output_open) {
this->xstream->audio_out->close (this->xstream->audio_out, this->xstream);
this->output_open = 0;
}
free (this_gen);
}
static audio_decoder_t *open_plugin (audio_decoder_class_t *class_gen, xine_stream_t *stream) {
mad_decoder_t *this ;
this = (mad_decoder_t *) xine_xmalloc (sizeof (mad_decoder_t));
this->audio_decoder.decode_data = mad_decode_data;
this->audio_decoder.reset = mad_reset;
this->audio_decoder.discontinuity = mad_discontinuity;
this->audio_decoder.dispose = mad_dispose;
this->output_open = 0;
this->bytes_in_buffer = 0;
this->preview_mode = 0;
this->xstream = stream;
mad_synth_init (&this->synth);
mad_stream_init (&this->stream);
mad_frame_init (&this->frame);
this->stream.options = MAD_OPTION_IGNORECRC;
lprintf ("init\n");
return &this->audio_decoder;
}
/*
* mad plugin class
*/
static char *get_identifier (audio_decoder_class_t *this) {
return "mad";
}
static char *get_description (audio_decoder_class_t *this) {
return "libmad based mpeg audio layer 1/2/3 decoder plugin";
}
static void dispose_class (audio_decoder_class_t *this) {
free (this);
}
static void *init_plugin (xine_t *xine, void *data) {
mad_class_t *this;
this = (mad_class_t *) xine_xmalloc (sizeof (mad_class_t));
this->decoder_class.open_plugin = open_plugin;
this->decoder_class.get_identifier = get_identifier;
this->decoder_class.get_description = get_description;
this->decoder_class.dispose = dispose_class;
return this;
}
static uint32_t audio_types[] = {
BUF_AUDIO_MPEG, 0
};
static decoder_info_t dec_info_audio = {
audio_types, /* supported types */
7 /* priority */
};
plugin_info_t xine_plugin_info[] = {
/* type, API, "name", version, special_info, init_function */
{ PLUGIN_AUDIO_DECODER, 15, "mad", XINE_VERSION_CODE, &dec_info_audio, init_plugin },
{ PLUGIN_NONE, 0, "", 0, NULL, NULL }
};
--- NEW FILE: bit.h ---
/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: bit.h,v 1.1 2005/04/04 22:32:48 dsalt-guest Exp $
*/
# ifndef LIBMAD_BIT_H
# define LIBMAD_BIT_H
struct mad_bitptr {
unsigned char const *byte;
unsigned short cache;
unsigned short left;
};
void mad_bit_init(struct mad_bitptr *, unsigned char const *);
# define mad_bit_finish(bitptr) /* nothing */
unsigned int mad_bit_length(struct mad_bitptr const *,
struct mad_bitptr const *);
# define mad_bit_bitsleft(bitptr) ((bitptr)->left)
unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *);
void mad_bit_skip(struct mad_bitptr *, unsigned int);
unsigned long mad_bit_read(struct mad_bitptr *, unsigned int);
void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long);
unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short);
# endif