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Commit afa90da5 authored by Zdenek Kabelac's avatar Zdenek Kabelac
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* replaced with liba52 

Originally committed as revision 447 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 7aaf3b98
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libavcodec/libac3/ac3.h deleted 100644 → 0
View file @ 7aaf3b98
/*
* ac3.h
*
* Copyright (C) Aaron Holtzman - May 1999
*
* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
*
* ac3dec 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, or (at your option)
* any later version.
*
* ac3dec 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
typedef struct ac3_ba_s {
uint16_t fsnroffst; // fine SNR offset
uint16_t fgaincod; // fast gain
uint16_t deltbae; // delta bit allocation exists
int8_t deltba[50]; // per-band delta bit allocation
} ac3_ba_t;
typedef struct ac3_state_s {
uint8_t fscod; // sample rate
uint8_t halfrate; // halfrate factor
uint8_t acmod; // coded channels
float clev; // centre channel mix level
float slev; // surround channels mix level
uint8_t lfeon; // coded lfe channel
int output; // type of output
float level; // output level
float bias; // output bias
uint16_t cplinu; // coupling in use
uint16_t chincpl[5]; // channel coupled
uint16_t phsflginu; // phase flags in use (stereo only)
uint16_t cplbndstrc[18]; // coupling band structure
uint16_t cplstrtmant; // coupling channel start mantissa
uint16_t cplendmant; // coupling channel end mantissa
float cplco[5][18]; // coupling coordinates
// derived information
uint16_t cplstrtbnd; // coupling start band (for bit allocation)
uint16_t ncplbnd; // number of coupling bands
uint16_t rematflg[4]; // stereo rematrixing
uint16_t endmant[5]; // channel end mantissa
uint8_t cpl_exp[256]; // decoded coupling channel exponents
uint8_t fbw_exp[5][256]; // decoded channel exponents
uint8_t lfe_exp[7]; // decoded lfe channel exponents
uint16_t sdcycod; // slow decay
uint16_t fdcycod; // fast decay
uint16_t sgaincod; // slow gain
uint16_t dbpbcod; // dB per bit - encodes the dbknee value
uint16_t floorcod; // masking floor
uint16_t csnroffst; // coarse SNR offset
ac3_ba_t cplba; // coupling bit allocation parameters
ac3_ba_t ba[5]; // channel bit allocation parameters
ac3_ba_t lfeba; // lfe bit allocation parameters
uint16_t cplfleak; // coupling fast leak init
uint16_t cplsleak; // coupling slow leak init
// derived bit allocation information
int8_t fbw_bap[5][256];
int8_t cpl_bap[256];
int8_t lfe_bap[7];
} ac3_state_t;
/* samples work structure */
typedef float stream_samples_t[6][256];
#define AC3_CHANNEL 0
#define AC3_MONO 1
#define AC3_STEREO 2
#define AC3_3F 3
#define AC3_2F1R 4
#define AC3_3F1R 5
#define AC3_2F2R 6
#define AC3_3F2R 7
#define AC3_CHANNEL1 8
#define AC3_CHANNEL2 9
#define AC3_DOLBY 10
#define AC3_CHANNEL_MASK 15
#define AC3_LFE 16
#define AC3_ADJUST_LEVEL 32
void ac3_init (void);
int ac3_syncinfo (uint8_t * buf, int * flags,
int * sample_rate, int * bit_rate);
int ac3_frame (ac3_state_t * state, uint8_t * buf, int * flags,
float * level, float bias);
int ac3_block (ac3_state_t * state);
libavcodec/libac3/ac3_internal.h deleted 100644 → 0
View file @ 7aaf3b98
/*
* ac3_internal.h
*
* Copyright (C) Aaron Holtzman - May 1999
*
* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
*
* ac3dec 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, or (at your option)
* any later version.
*
* ac3dec 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#define LEVEL_PLUS3DB 1.4142135623730951
#define LEVEL_3DB 0.7071067811865476
#define LEVEL_45DB 0.5946035575013605
#define LEVEL_6DB 0.5
/* Exponent strategy constants */
#define EXP_REUSE (0)
#define EXP_D15 (1)
#define EXP_D25 (2)
#define EXP_D45 (3)
/* Delta bit allocation constants */
#define DELTA_BIT_REUSE (0)
#define DELTA_BIT_NEW (1)
#define DELTA_BIT_NONE (2)
#define DELTA_BIT_RESERVED (3)
void bit_allocate (ac3_state_t * state, ac3_ba_t * ba, int bndstart,
int start, int end, int fastleak, int slowleak,
uint8_t * exp, int8_t * bap);
int downmix_init (int input, int flags, float * level, float clev, float slev);
void downmix (float * samples, int acmod, int output, float level, float bias,
float clev, float slev);
void imdct_init (void);
extern void (* imdct_256) (float data[], float delay[]);
extern void (* imdct_512) (float data[], float delay[]);
libavcodec/libac3/bit_allocate.c deleted 100644 → 0
View file @ 7aaf3b98
/*
* bit_allocate.c
*
* Copyright (C) Aaron Holtzman - May 1999
*
* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
*
* ac3dec 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, or (at your option)
* any later version.
*
* ac3dec 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "../common.h"
#include "ac3.h"
#include "ac3_internal.h"
static int hthtab[3][50] = {
{0x730, 0x730, 0x7c0, 0x800, 0x820, 0x840, 0x850, 0x850, 0x860, 0x860,
0x860, 0x860, 0x860, 0x870, 0x870, 0x870, 0x880, 0x880, 0x890, 0x890,
0x8a0, 0x8a0, 0x8b0, 0x8b0, 0x8c0, 0x8c0, 0x8d0, 0x8e0, 0x8f0, 0x900,
0x910, 0x910, 0x910, 0x910, 0x900, 0x8f0, 0x8c0, 0x870, 0x820, 0x7e0,
0x7a0, 0x770, 0x760, 0x7a0, 0x7c0, 0x7c0, 0x6e0, 0x400, 0x3c0, 0x3c0},
{0x710, 0x710, 0x7a0, 0x7f0, 0x820, 0x830, 0x840, 0x850, 0x850, 0x860,
0x860, 0x860, 0x860, 0x860, 0x870, 0x870, 0x870, 0x880, 0x880, 0x880,
0x890, 0x890, 0x8a0, 0x8a0, 0x8b0, 0x8b0, 0x8c0, 0x8c0, 0x8e0, 0x8f0,
0x900, 0x910, 0x910, 0x910, 0x910, 0x900, 0x8e0, 0x8b0, 0x870, 0x820,
0x7e0, 0x7b0, 0x760, 0x770, 0x7a0, 0x7c0, 0x780, 0x5d0, 0x3c0, 0x3c0},
{0x680, 0x680, 0x750, 0x7b0, 0x7e0, 0x810, 0x820, 0x830, 0x840, 0x850,
0x850, 0x850, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860,
0x870, 0x870, 0x870, 0x870, 0x880, 0x880, 0x880, 0x890, 0x8a0, 0x8b0,
0x8c0, 0x8d0, 0x8e0, 0x8f0, 0x900, 0x910, 0x910, 0x910, 0x900, 0x8f0,
0x8d0, 0x8b0, 0x840, 0x7f0, 0x790, 0x760, 0x7a0, 0x7c0, 0x7b0, 0x720}
};
static int8_t baptab[305] = {
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, // 93 padding entries
16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14,
14, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9,
9, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5,
5, 4, 4, -3, -3, 3, 3, 3, -2, -2, -1, -1, -1, -1, -1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 // 148 padding entries
};
static int bndtab[30] = {21, 22, 23, 24, 25, 26, 27, 28, 31, 34,
37, 40, 43, 46, 49, 55, 61, 67, 73, 79,
85, 97, 109, 121, 133, 157, 181, 205, 229, 253};
static int8_t latab[256] = {
-64, -63, -62, -61, -60, -59, -58, -57, -56, -55, -54, -53,
-52, -52, -51, -50, -49, -48, -47, -47, -46, -45, -44, -44,
-43, -42, -41, -41, -40, -39, -38, -38, -37, -36, -36, -35,
-35, -34, -33, -33, -32, -32, -31, -30, -30, -29, -29, -28,
-28, -27, -27, -26, -26, -25, -25, -24, -24, -23, -23, -22,
-22, -21, -21, -21, -20, -20, -19, -19, -19, -18, -18, -18,
-17, -17, -17, -16, -16, -16, -15, -15, -15, -14, -14, -14,
-13, -13, -13, -13, -12, -12, -12, -12, -11, -11, -11, -11,
-10, -10, -10, -10, -10, -9, -9, -9, -9, -9, -8, -8,
-8, -8, -8, -8, -7, -7, -7, -7, -7, -7, -6, -6,
-6, -6, -6, -6, -6, -6, -5, -5, -5, -5, -5, -5,
-5, -5, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
-4, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
-3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2,
-2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0
};
#define UPDATE_LEAK() \
do { \
fastleak += fdecay; \
if (fastleak > psd + fgain) \
fastleak = psd + fgain; \
slowleak += sdecay; \
if (slowleak > psd + sgain) \
slowleak = psd + sgain; \
} while (0)
#define COMPUTE_MASK() \
do { \
if (psd > dbknee) \
mask -= (psd - dbknee) >> 2; \
if (mask > hth [i >> halfrate]) \
mask = hth [i >> halfrate]; \
mask -= snroffset + 128 * deltba[i]; \
mask = (mask > 0) ? 0 : ((-mask) >> 5); \
mask -= floor; \
} while (0)
void bit_allocate (ac3_state_t * state, ac3_ba_t * ba, int bndstart,
int start, int end, int fastleak, int slowleak,
uint8_t * exp, int8_t * bap)
{
static int slowgain[4] = {0x540, 0x4d8, 0x478, 0x410};
static int dbpbtab[4] = {0xc00, 0x500, 0x300, 0x100};
static int floortab[8] = {0x910, 0x950, 0x990, 0x9d0,
0xa10, 0xa90, 0xb10, 0x1400};
int i, j;
int fdecay, fgain, sdecay, sgain, dbknee, floor, snroffset;
int psd, mask;
int8_t * deltba;
int * hth;
int halfrate;
halfrate = state->halfrate;
fdecay = (63 + 20 * state->fdcycod) >> halfrate;
fgain = 128 + 128 * ba->fgaincod;
sdecay = (15 + 2 * state->sdcycod) >> halfrate;
sgain = slowgain[state->sgaincod];
dbknee = dbpbtab[state->dbpbcod];
hth = hthtab[state->fscod];
/*
* if there is no delta bit allocation, make deltba point to an area
* known to contain zeroes. baptab+156 here.
*/
deltba = (ba->deltbae == DELTA_BIT_NONE) ? baptab + 156 : ba->deltba;
floor = floortab[state->floorcod];
snroffset = 960 - 64 * state->csnroffst - 4 * ba->fsnroffst + floor;
floor >>= 5;
i = bndstart;
j = start;
if (start == 0) { // not the coupling channel
int lowcomp;
lowcomp = 0;
j = end - 1;
do {
if (i < j) {
if (exp[i+1] == exp[i] - 2)
lowcomp = 384;
else if (lowcomp && (exp[i+1] > exp[i]))
lowcomp -= 64;
}
psd = 128 * exp[i];
mask = psd + fgain + lowcomp;
COMPUTE_MASK ();
bap[i++] = (baptab+156)[mask + 4 * exp[i]];
} while ((i < 3) || ((i < 7) && (exp[i] > exp[i-1])));
fastleak = psd + fgain;
slowleak = psd + sgain;
while (i < 7) {
if (i < j) {
if (exp[i+1] == exp[i] - 2)
lowcomp = 384;
else if (lowcomp && (exp[i+1] > exp[i]))
lowcomp -= 64;
}
psd = 128 * exp[i];
UPDATE_LEAK ();
mask = ((fastleak + lowcomp < slowleak) ?
fastleak + lowcomp : slowleak);
COMPUTE_MASK ();
bap[i++] = (baptab+156)[mask + 4 * exp[i]];
}
if (end == 7) // lfe channel
return;
do {
if (exp[i+1] == exp[i] - 2)
lowcomp = 320;
else if (lowcomp && (exp[i+1] > exp[i]))
lowcomp -= 64;
psd = 128 * exp[i];
UPDATE_LEAK ();
mask = ((fastleak + lowcomp < slowleak) ?
fastleak + lowcomp : slowleak);
COMPUTE_MASK ();
bap[i++] = (baptab+156)[mask + 4 * exp[i]];
} while (i < 20);
while (lowcomp > 128) { // two iterations maximum
lowcomp -= 128;
psd = 128 * exp[i];
UPDATE_LEAK ();
mask = ((fastleak + lowcomp < slowleak) ?
fastleak + lowcomp : slowleak);
COMPUTE_MASK ();
bap[i++] = (baptab+156)[mask + 4 * exp[i]];
}
j = i;
}
do {
int startband, endband;
startband = j;
endband = ((bndtab-20)[i] < end) ? (bndtab-20)[i] : end;
psd = 128 * exp[j++];
while (j < endband) {
int next, delta;
next = 128 * exp[j++];
delta = next - psd;
switch (delta >> 9) {
case -6: case -5: case -4: case -3: case -2:
psd = next;
break;
case -1:
psd = next + latab[(-delta) >> 1];
break;
case 0:
psd += latab[delta >> 1];
break;
}
}
// minpsd = -289
UPDATE_LEAK ();
mask = (fastleak < slowleak) ? fastleak : slowleak;
COMPUTE_MASK ();
i++;
j = startband;
do {
// max(mask+4*exp)=147=-(minpsd+fgain-deltba-snroffset)>>5+4*exp
// min(mask+4*exp)=-156=-(sgain-deltba-snroffset)>>5
bap[j++] = (baptab+156)[mask + 4 * exp[j]];
} while (j < endband);
} while (j < end);
}
libavcodec/libac3/bitstream.c deleted 100644 → 0
View file @ 7aaf3b98
/*
* bitstream.c
*
* Copyright (C) Aaron Holtzman - Dec 1999
*
* This file is part of ac3dec, a free AC-3 audio decoder
*
* ac3dec 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, or (at your option)
* any later version.
*
* ac3dec 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "../common.h"
#include "ac3.h"
#include "ac3_internal.h"
#include "bitstream.h"
#define BUFFER_SIZE 4096
static uint8_t *buffer_start;
uint32_t bits_left;
uint32_t current_word;
void bitstream_set_ptr (uint8_t * buf)
{
buffer_start = buf;
bits_left = 0;
}
static inline void
bitstream_fill_current()
{
current_word = *((uint32_t*)buffer_start)++;
current_word = swab32(current_word);
}
//
// The fast paths for _get is in the
// bitstream.h header file so it can be inlined.
//
// The "bottom half" of this routine is suffixed _bh
//
// -ah
//
uint32_t
bitstream_get_bh(uint32_t num_bits)
{
uint32_t result;
num_bits -= bits_left;
result = (current_word << (32 - bits_left)) >> (32 - bits_left);
bitstream_fill_current();
if(num_bits != 0)
result = (result << num_bits) | (current_word >> (32 - num_bits));
bits_left = 32 - num_bits;
return result;
}
libavcodec/libac3/bitstream.h deleted 100644 → 0
View file @ 7aaf3b98
/*
* bitstream.h
*
* Copyright (C) Aaron Holtzman - Dec 1999
*
* This file is part of ac3dec, a free AC-3 audio decoder
*
* ac3dec 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, or (at your option)
* any later version.
*
* ac3dec 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
//My new and improved vego-matic endian swapping routine
//(stolen from the kernel)
#ifdef WORDS_BIGENDIAN
# define swab32(x) (x)
#else
# if defined (__i386__)
# define swab32(x) __i386_swab32(x)
static inline const uint32_t __i386_swab32(uint32_t x)
{
__asm__("bswap %0" : "=r" (x) : "0" (x));
return x;
}
# else
# define swab32(x)\
((((uint8_t*)&x)[0] << 24) | (((uint8_t*)&x)[1] << 16) | \
(((uint8_t*)&x)[2] << 8) | (((uint8_t*)&x)[3]))
# endif
#endif
extern uint32_t bits_left;
extern uint32_t current_word;
void bitstream_set_ptr (uint8_t * buf);
uint32_t bitstream_get_bh(uint32_t num_bits);
static inline uint32_t
bitstream_get(uint32_t num_bits)
{
uint32_t result;
if(num_bits < bits_left) {
result = (current_word << (32 - bits_left)) >> (32 - num_bits);
bits_left -= num_bits;
return result;
}
return bitstream_get_bh(num_bits);
}
libavcodec/libac3/downmix.c deleted 100644 → 0
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libavcodec/libac3/imdct.c deleted 100644 → 0
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libavcodec/libac3/parse.c deleted 100644 → 0
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libavcodec/libac3/tables.h deleted 100644 → 0
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/*
* parse.c
*
* Copyright (C) Aaron Holtzman - May 1999
*
* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
*
* ac3dec 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, or (at your option)
* any later version.
*
* ac3dec 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
static int8_t exp_1[128] = {
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
25,25,25
};
static int8_t exp_2[128] = {
-2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
25,25,25
};
static int8_t exp_3[128] = {
-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
25,25,25
};
#define Q0 ((-2 << 15) / 3.0)
#define Q1 (0)
#define Q2 ((2 << 15) / 3.0)
static const float q_1_0[ 32 ] = {
Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
0,0,0,0,0
};
static const float q_1_1[ 32 ] = {
Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
0,0,0,0,0
};
static const float q_1_2[ 32 ] = {
Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
0,0,0,0,0
};
#undef Q0
#undef Q1
#undef Q2
#define Q0 ((-4 << 15) / 5.0)
#define Q1 ((-2 << 15) / 5.0)
#define Q2 (0)
#define Q3 ((2 << 15) / 5.0)
#define Q4 ((4 << 15) / 5.0)
static const float q_2_0[ 128 ] = {
Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,
Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,
0,0,0
};
static const float q_2_1[ 128 ] = {
Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
0,0,0
};
static const float q_2_2[ 128 ] = {
Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
0,0,0
};
#undef Q0
#undef Q1
#undef Q2
#undef Q3
#undef Q4
static const float q_3[8] = {
(-6 << 15)/7.0, (-4 << 15)/7.0, (-2 << 15)/7.0, 0,
( 2 << 15)/7.0, ( 4 << 15)/7.0, ( 6 << 15)/7.0, 0
};
#define Q0 ((-10 << 15) / 11.0)
#define Q1 ((-8 << 15) / 11.0)
#define Q2 ((-6 << 15) / 11.0)
#define Q3 ((-4 << 15) / 11.0)
#define Q4 ((-2 << 15) / 11.0)
#define Q5 (0)
#define Q6 ((2 << 15) / 11.0)
#define Q7 ((4 << 15) / 11.0)
#define Q8 ((6 << 15) / 11.0)
#define Q9 ((8 << 15) / 11.0)
#define QA ((10 << 15) / 11.0)
static const float q_4_0[ 128 ] = {
Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3,
Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4,
Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5,
Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6,
Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7,
Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8,
Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9,
QA, QA, QA, QA, QA, QA, QA, QA, QA, QA, QA,
0, 0, 0, 0, 0, 0, 0
};
static const float q_4_1[ 128 ] = {
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
0, 0, 0, 0, 0, 0, 0
};
#undef Q0
#undef Q1
#undef Q2
#undef Q3
#undef Q4
#undef Q5
#undef Q6
#undef Q7
#undef Q8
#undef Q9
#undef QA
static const float q_5[16] = {
(-14 << 15)/15.0,(-12 << 15)/15.0,(-10 << 15)/15.0,
( -8 << 15)/15.0,( -6 << 15)/15.0,( -4 << 15)/15.0,
( -2 << 15)/15.0, 0 ,( 2 << 15)/15.0,
( 4 << 15)/15.0,( 6 << 15)/15.0,( 8 << 15)/15.0,
( 10 << 15)/15.0,( 12 << 15)/15.0,( 14 << 15)/15.0,
0
};
static const uint32_t u32_scale_factors[25] =
{
0x38000000, //2 ^ -(0 + 15)
0x37800000, //2 ^ -(1 + 15)
0x37000000, //2 ^ -(2 + 15)
0x36800000, //2 ^ -(3 + 15)
0x36000000, //2 ^ -(4 + 15)
0x35800000, //2 ^ -(5 + 15)
0x35000000, //2 ^ -(6 + 15)
0x34800000, //2 ^ -(7 + 15)
0x34000000, //2 ^ -(8 + 15)
0x33800000, //2 ^ -(9 + 15)
0x33000000, //2 ^ -(10 + 15)
0x32800000, //2 ^ -(11 + 15)
0x32000000, //2 ^ -(12 + 15)
0x31800000, //2 ^ -(13 + 15)
0x31000000, //2 ^ -(14 + 15)
0x30800000, //2 ^ -(15 + 15)
0x30000000, //2 ^ -(16 + 15)
0x2f800000, //2 ^ -(17 + 15)
0x2f000000, //2 ^ -(18 + 15)
0x2e800000, //2 ^ -(19 + 15)
0x2e000000, //2 ^ -(20 + 15)
0x2d800000, //2 ^ -(21 + 15)
0x2d000000, //2 ^ -(22 + 15)
0x2c800000, //2 ^ -(23 + 15)
0x2c000000 //2 ^ -(24 + 15)
};
static float * scale_factor = (float *) u32_scale_factors;
static const uint16_t dither_lut[256] = {
0x0000, 0xa011, 0xe033, 0x4022, 0x6077, 0xc066, 0x8044, 0x2055,
0xc0ee, 0x60ff, 0x20dd, 0x80cc, 0xa099, 0x0088, 0x40aa, 0xe0bb,
0x21cd, 0x81dc, 0xc1fe, 0x61ef, 0x41ba, 0xe1ab, 0xa189, 0x0198,
0xe123, 0x4132, 0x0110, 0xa101, 0x8154, 0x2145, 0x6167, 0xc176,
0x439a, 0xe38b, 0xa3a9, 0x03b8, 0x23ed, 0x83fc, 0xc3de, 0x63cf,
0x8374, 0x2365, 0x6347, 0xc356, 0xe303, 0x4312, 0x0330, 0xa321,
0x6257, 0xc246, 0x8264, 0x2275, 0x0220, 0xa231, 0xe213, 0x4202,
0xa2b9, 0x02a8, 0x428a, 0xe29b, 0xc2ce, 0x62df, 0x22fd, 0x82ec,
0x8734, 0x2725, 0x6707, 0xc716, 0xe743, 0x4752, 0x0770, 0xa761,
0x47da, 0xe7cb, 0xa7e9, 0x07f8, 0x27ad, 0x87bc, 0xc79e, 0x678f,
0xa6f9, 0x06e8, 0x46ca, 0xe6db, 0xc68e, 0x669f, 0x26bd, 0x86ac,
0x6617, 0xc606, 0x8624, 0x2635, 0x0660, 0xa671, 0xe653, 0x4642,
0xc4ae, 0x64bf, 0x249d, 0x848c, 0xa4d9, 0x04c8, 0x44ea, 0xe4fb,
0x0440, 0xa451, 0xe473, 0x4462, 0x6437, 0xc426, 0x8404, 0x2415,
0xe563, 0x4572, 0x0550, 0xa541, 0x8514, 0x2505, 0x6527, 0xc536,
0x258d, 0x859c, 0xc5be, 0x65af, 0x45fa, 0xe5eb, 0xa5c9, 0x05d8,
0xae79, 0x0e68, 0x4e4a, 0xee5b, 0xce0e, 0x6e1f, 0x2e3d, 0x8e2c,
0x6e97, 0xce86, 0x8ea4, 0x2eb5, 0x0ee0, 0xaef1, 0xeed3, 0x4ec2,
0x8fb4, 0x2fa5, 0x6f87, 0xcf96, 0xefc3, 0x4fd2, 0x0ff0, 0xafe1,
0x4f5a, 0xef4b, 0xaf69, 0x0f78, 0x2f2d, 0x8f3c, 0xcf1e, 0x6f0f,
0xede3, 0x4df2, 0x0dd0, 0xadc1, 0x8d94, 0x2d85, 0x6da7, 0xcdb6,
0x2d0d, 0x8d1c, 0xcd3e, 0x6d2f, 0x4d7a, 0xed6b, 0xad49, 0x0d58,
0xcc2e, 0x6c3f, 0x2c1d, 0x8c0c, 0xac59, 0x0c48, 0x4c6a, 0xec7b,
0x0cc0, 0xacd1, 0xecf3, 0x4ce2, 0x6cb7, 0xcca6, 0x8c84, 0x2c95,
0x294d, 0x895c, 0xc97e, 0x696f, 0x493a, 0xe92b, 0xa909, 0x0918,
0xe9a3, 0x49b2, 0x0990, 0xa981, 0x89d4, 0x29c5, 0x69e7, 0xc9f6,
0x0880, 0xa891, 0xe8b3, 0x48a2, 0x68f7, 0xc8e6, 0x88c4, 0x28d5,
0xc86e, 0x687f, 0x285d, 0x884c, 0xa819, 0x0808, 0x482a, 0xe83b,
0x6ad7, 0xcac6, 0x8ae4, 0x2af5, 0x0aa0, 0xaab1, 0xea93, 0x4a82,
0xaa39, 0x0a28, 0x4a0a, 0xea1b, 0xca4e, 0x6a5f, 0x2a7d, 0x8a6c,
0x4b1a, 0xeb0b, 0xab29, 0x0b38, 0x2b6d, 0x8b7c, 0xcb5e, 0x6b4f,
0x8bf4, 0x2be5, 0x6bc7, 0xcbd6, 0xeb83, 0x4b92, 0x0bb0, 0xaba1
};
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