Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

Remove internal liba52; external lib still works, native decoder coming up.

Browse Source 
Originally committed as revision 7933 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Diego Biurrun 18 years ago
parent f70f03f623
commit 0900a85fe8
18 changed files with 5 additions and 3926 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 13
      configure
  2. 10
      libavcodec/Makefile
  3. 20
      libavcodec/a52dec.c
  4. 73
      libavcodec/liba52/a52.h
  5. 162
      libavcodec/liba52/a52_internal.h
  6. 32
      libavcodec/liba52/a52_util.h
  7. 260
      libavcodec/liba52/bit_allocate.c
  8. 91
      libavcodec/liba52/bitstream.c
  9. 77
      libavcodec/liba52/bitstream.h
  10. 73
      libavcodec/liba52/crc.c
  11. 679
      libavcodec/liba52/downmix.c
  12. 411
      libavcodec/liba52/imdct.c
  13. 42
      libavcodec/liba52/mm_accel.h
  14. 939
      libavcodec/liba52/parse.c
  15. 63
      libavcodec/liba52/resample.c
  16. 203
      libavcodec/liba52/resample_c.c
  17. 537
      libavcodec/liba52/resample_mmx.c
  18. 246
      libavcodec/liba52/tables.h

13
configure vendored
Unescape View File

@ -78,7 +78,6 @@ show_help(){
echo " --enable-x11grab enable X11 grabbing [default=no]"
echo " --enable-dc1394 enable IIDC-1394 grabbing using libdc1394"
echo " and libraw1394 [default=no]"
echo " --enable-a52 enable GPLed liba52 support [default=no]"
echo " --enable-a52bin open liba52.so.0 at runtime [default=no]"
echo " --enable-avisynth allow reading AVISynth script files [default=no]"
echo " --enable-dts enable GPLed libdts support [default=no]"
@ -486,7 +485,6 @@ CONFIG_LIST='
ffserver
gpl
ipv6
liba52
liba52bin
libdts
libfaac
@ -576,7 +574,7 @@ zmbv_encoder_deps="zlib"
aac_decoder_deps="libfaad"
mpeg4aac_decoder_deps="libfaad"
ac3_decoder_deps="liba52"
ac3_decoder_deps="liba52bin"
amr_nb_decoder_deps_any="amr_nb amr_nb_fixed"
amr_nb_encoder_deps_any="amr_nb amr_nb_fixed"
amr_wb_decoder_deps="amr_wb"
@ -741,7 +739,6 @@ avisynth="no"
dc1394="no"
dlfcn_h="no"
dlopen="no"
liba52="no"
liba52bin="no"
libdts="no"
libfaac="no"
@ -1040,9 +1037,7 @@ for opt do
;;
--disable-zlib) zlib="no"
;;
--enable-a52) liba52="yes"
;;
--enable-a52bin) liba52bin="yes"; liba52="yes"
--enable-a52bin) liba52bin="yes"
;;
--enable-dts) libdts="yes"
;;
@ -1261,7 +1256,7 @@ if disabled gpl ; then
enabled_any $@ && die "$name is under GPL and --enable-gpl is not specified."
}
die_gpl_disabled "The Postprocessing code" pp
die_gpl_disabled "liba52" liba52 liba52bin
die_gpl_disabled "liba52" liba52bin
die_gpl_disabled "libxvidcore" xvid
die_gpl_disabled "x264" x264
die_gpl_disabled "libdts" libdts
@ -1885,7 +1880,6 @@ if enabled sdl_too_old; then
fi
echo "Sun medialib support $mlib"
echo "AVISynth enabled $avisynth"
echo "liba52 support $liba52"
echo "liba52 dlopened $liba52bin"
echo "libdts support $libdts"
echo "libfaac enabled $libfaac"
@ -2092,7 +2086,6 @@ if enabled source_path_used; then
libavcodec/sparc \
libavcodec/mlib \
libavcodec/ppc \
libavcodec/liba52 \
libavcodec/amr \
libavcodec/amr_float \
libavcodec/amrwb_float \

10
libavcodec/Makefile
Unescape View File

@ -248,14 +248,7 @@ OBJS-$(CONFIG_ADPCM_YAMAHA_DECODER) += adpcm.o
OBJS-$(CONFIG_ADPCM_YAMAHA_ENCODER) += adpcm.o
# external codec libraries
OBJS-$(CONFIG_LIBA52) += a52dec.o
OBJS-$(CONFIG_LIBA52)$(CONFIG_LIBA52BIN) += liba52/bit_allocate.o \
liba52/bitstream.o \
liba52/downmix.o \
liba52/imdct.o \
liba52/parse.o \
liba52/crc.o \
liba52/resample.o
OBJS-$(CONFIG_LIBA52BIN) += a52dec.o
OBJS-$(CONFIG_LIBDTS) += dtsdec.o
OBJS-$(CONFIG_LIBFAAC) += faac.o
OBJS-$(CONFIG_LIBFAAD) += faad.o
@ -435,7 +428,6 @@ clean::
ps2/*.o ps2/*~ \
sh4/*.o sh4/*~ \
sparc/*.o sparc/*~ \
liba52/*.o liba52/*~ \
amr_float/*.o \
apiexample $(TESTS)
-$(MAKE) -C amr clean

20
libavcodec/a52dec.c
Unescape View File

@ -25,12 +25,9 @@
*/
#include "avcodec.h"
#include "liba52/a52.h"
#ifdef CONFIG_LIBA52BIN
#include <a52dec/a52.h>
#include <dlfcn.h>
static const char* liba52name = "liba52.so.0";
#endif
/**
* liba52 - Copyright (C) Aaron Holtzman
@ -70,7 +67,6 @@ typedef struct AC3DecodeState {
} AC3DecodeState;
#ifdef CONFIG_LIBA52BIN
static void* dlsymm(void* handle, const char* symbol)
{
void* f = dlsym(handle, symbol);
@ -78,13 +74,11 @@ static void* dlsymm(void* handle, const char* symbol)
av_log( NULL, AV_LOG_ERROR, "A52 Decoder - function '%s' can't be resolved\n", symbol);
return f;
}
#endif
static int a52_decode_init(AVCodecContext *avctx)
{
AC3DecodeState *s = avctx->priv_data;
#ifdef CONFIG_LIBA52BIN
s->handle = dlopen(liba52name, RTLD_LAZY);
if (!s->handle)
{
@ -103,16 +97,6 @@ static int a52_decode_init(AVCodecContext *avctx)
dlclose(s->handle);
return -1;
}
#else
/* static linked version */
s->handle = 0;
s->a52_init = a52_init;
s->a52_samples = a52_samples;
s->a52_syncinfo = a52_syncinfo;
s->a52_frame = a52_frame;
s->a52_block = a52_block;
s->a52_free = a52_free;
#endif
s->state = s->a52_init(0); /* later use CPU flags */
s->samples = s->a52_samples(s->state);
s->inbuf_ptr = s->inbuf;
@ -242,9 +226,7 @@ static int a52_decode_end(AVCodecContext *avctx)
{
AC3DecodeState *s = avctx->priv_data;
s->a52_free(s->state);
#ifdef CONFIG_LIBA52BIN
dlclose(s->handle);
#endif
return 0;
}

73
libavcodec/liba52/a52.h
Unescape View File

@ -1,73 +0,0 @@
/*
* a52.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef A52_H
#define A52_H
#include "../avcodec.h"
#undef malloc
#undef free
#undef realloc
#if defined(LIBA52_FIXED)
typedef int32_t sample_t;
typedef int32_t level_t;
#elif defined(LIBA52_DOUBLE)
typedef double sample_t;
typedef double level_t;
#else
typedef float sample_t;
typedef float level_t;
#endif
typedef struct a52_state_s a52_state_t;
#define A52_CHANNEL 0
#define A52_MONO 1
#define A52_STEREO 2
#define A52_3F 3
#define A52_2F1R 4
#define A52_3F1R 5
#define A52_2F2R 6
#define A52_3F2R 7
#define A52_CHANNEL1 8
#define A52_CHANNEL2 9
#define A52_DOLBY 10
#define A52_CHANNEL_MASK 15
#define A52_LFE 16
#define A52_ADJUST_LEVEL 32
a52_state_t * a52_init (uint32_t mm_accel);
sample_t * a52_samples (a52_state_t * state);
int a52_syncinfo (uint8_t * buf, int * flags,
int * sample_rate, int * bit_rate);
int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
level_t * level, sample_t bias);
void a52_dynrng (a52_state_t * state,
level_t (* call) (level_t, void *), void * data);
int a52_block (a52_state_t * state);
void a52_free (a52_state_t * state);
#endif /* A52_H */

162
libavcodec/liba52/a52_internal.h
Unescape View File

@ -1,162 +0,0 @@
/*
* a52_internal.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
typedef struct {
uint8_t bai; /* fine SNR offset, fast gain */
uint8_t deltbae; /* delta bit allocation exists */
int8_t deltba[50]; /* per-band delta bit allocation */
} ba_t;
typedef struct {
uint8_t exp[256]; /* decoded channel exponents */
int8_t bap[256]; /* derived channel bit allocation */
} expbap_t;
struct a52_state_s {
uint8_t fscod; /* sample rate */
uint8_t halfrate; /* halfrate factor */
uint8_t acmod; /* coded channels */
uint8_t lfeon; /* coded lfe channel */
level_t clev; /* centre channel mix level */
level_t slev; /* surround channels mix level */
int output; /* type of output */
level_t level; /* output level */
sample_t bias; /* output bias */
int dynrnge; /* apply dynamic range */
level_t dynrng; /* dynamic range */
void * dynrngdata; /* dynamic range callback funtion and data */
level_t (* dynrngcall) (level_t range, void * dynrngdata);
uint8_t chincpl; /* channel coupled */
uint8_t phsflginu; /* phase flags in use (stereo only) */
uint8_t cplstrtmant; /* coupling channel start mantissa */
uint8_t cplendmant; /* coupling channel end mantissa */
uint32_t cplbndstrc; /* coupling band structure */
level_t cplco[5][18]; /* coupling coordinates */
/* derived information */
uint8_t cplstrtbnd; /* coupling start band (for bit allocation) */
uint8_t ncplbnd; /* number of coupling bands */
uint8_t rematflg; /* stereo rematrixing */
uint8_t endmant[5]; /* channel end mantissa */
uint16_t bai; /* bit allocation information */
uint32_t * buffer_start;
uint16_t lfsr_state; /* dither state */
uint32_t bits_left;
uint32_t current_word;
uint8_t csnroffst; /* coarse SNR offset */
ba_t cplba; /* coupling bit allocation parameters */
ba_t ba[5]; /* channel bit allocation parameters */
ba_t lfeba; /* lfe bit allocation parameters */
uint8_t cplfleak; /* coupling fast leak init */
uint8_t cplsleak; /* coupling slow leak init */
expbap_t cpl_expbap;
expbap_t fbw_expbap[5];
expbap_t lfe_expbap;
sample_t * samples;
int downmixed;
};
#define LEVEL_PLUS6DB 2.0
#define LEVEL_PLUS3DB 1.4142135623730951
#define LEVEL_3DB 0.7071067811865476
#define LEVEL_45DB 0.5946035575013605
#define LEVEL_6DB 0.5
#define EXP_REUSE (0)
#define EXP_D15 (1)
#define EXP_D25 (2)
#define EXP_D45 (3)
#define DELTA_BIT_REUSE (0)
#define DELTA_BIT_NEW (1)
#define DELTA_BIT_NONE (2)
#define DELTA_BIT_RESERVED (3)
void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
int start, int end, int fastleak, int slowleak,
expbap_t * expbap);
int a52_downmix_init (int input, int flags, level_t * level,
level_t clev, level_t slev);
int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
level_t clev, level_t slev);
void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias,
level_t clev, level_t slev);
void a52_upmix (sample_t * samples, int acmod, int output);
void a52_imdct_init (uint32_t mm_accel);
void a52_imdct_256 (sample_t * data, sample_t * delay, sample_t bias);
void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias);
//extern void (* a52_imdct_256) (sample_t data[], sample_t delay[], sample_t bias);
//extern void (* a52_imdct_512) (sample_t data[], sample_t delay[], sample_t bias);
#define ROUND(x) ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))
#ifndef LIBA52_FIXED
typedef sample_t quantizer_t;
#define SAMPLE(x) (x)
#define LEVEL(x) (x)
#define MUL(a,b) ((a) * (b))
#define MUL_L(a,b) ((a) * (b))
#define MUL_C(a,b) ((a) * (b))
#define DIV(a,b) ((a) / (b))
#define BIAS(x) ((x) + bias)
#else /* LIBA52_FIXED */
typedef int16_t quantizer_t;
#define SAMPLE(x) (sample_t)((x) * (1 << 30))
#define LEVEL(x) (level_t)((x) * (1 << 26))
#if 0
#define MUL(a,b) ((int)(((int64_t)(a) * (b) + (1 << 29)) >> 30))
#define MUL_L(a,b) ((int)(((int64_t)(a) * (b) + (1 << 25)) >> 26))
#elif 1
#define MUL(a,b) \
({ int32_t _ta=(a), _tb=(b), _tc; \
_tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)(((_tc >> 14))+ (((_ta >> 16)*(_tb >> 16)) << 2 )); })
#define MUL_L(a,b) \
({ int32_t _ta=(a), _tb=(b), _tc; \
_tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)((_tc >> 10) + (((_ta >> 16)*(_tb >> 16)) << 6)); })
#else
#define MUL(a,b) (((a) >> 15) * ((b) >> 15))
#define MUL_L(a,b) (((a) >> 13) * ((b) >> 13))
#endif
#define MUL_C(a,b) MUL_L (a, LEVEL (b))
#define DIV(a,b) ((((int64_t)LEVEL (a)) << 26) / (b))
#define BIAS(x) (x)
#endif

32
libavcodec/liba52/a52_util.h
Unescape View File

@ -1,32 +0,0 @@
/*
* a52_util.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef A52_UTIL_H
#define A52_UTIL_H
uint16_t a52_crc16_block(uint8_t *data,uint32_t num_bytes);
void* a52_resample_init(uint32_t mm_accel,int flags,int chans);
extern int (* a52_resample) (float * _f, int16_t * s16);
#endif /* A52_H */

260
libavcodec/liba52/bit_allocate.c
Unescape View File

@ -1,260 +0,0 @@
/*
* bit_allocate.c
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "a52.h"
#include "a52_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 elems */
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 elems */
};
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 a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
int start, int end, int fastleak, int slowleak,
expbap_t * expbap)
{
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;
uint8_t * exp;
int8_t * bap;
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->bai >> 7) & 3)) >> halfrate; /* fdcycod */
fgain = 128 + 128 * (ba->bai & 7); /* fgaincod */
sdecay = (15 + 2 * (state->bai >> 9)) >> halfrate; /* sdcycod */
sgain = slowgain[(state->bai >> 5) & 3]; /* sgaincod */
dbknee = dbpbtab[(state->bai >> 3) & 3]; /* 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->bai & 7]; /* floorcod */
snroffset = 960 - 64 * state->csnroffst - 4 * (ba->bai >> 3) + floor;
floor >>= 5;
exp = expbap->exp;
bap = expbap->bap;
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]];
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]];
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]];
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]];
i++;
}
j = i;
}
do {
int startband, endband;
startband = j;
endband = (bndtab[i-20] < end) ? bndtab[i-20] : 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);
}

91
libavcodec/liba52/bitstream.c
Unescape View File

@ -1,91 +0,0 @@
/*
* bitstream.c
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "a52.h"
#include "a52_internal.h"
#include "bitstream.h"
#define BUFFER_SIZE 4096
void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf)
{
int align;
align = (long)buf & 3;
state->buffer_start = (uint32_t *) (buf - align);
state->bits_left = 0;
state->current_word = 0;
bitstream_get (state, align * 8);
}
static inline void bitstream_fill_current (a52_state_t * state)
{
uint32_t tmp;
tmp = *(state->buffer_start++);
state->current_word = swab32 (tmp);
}
/*
* 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 a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits)
{
uint32_t result;
num_bits -= state->bits_left;
result = ((state->current_word << (32 - state->bits_left)) >>
(32 - state->bits_left));
bitstream_fill_current (state);
if (num_bits != 0)
result = (result << num_bits) | (state->current_word >> (32 - num_bits));
state->bits_left = 32 - num_bits;
return result;
}
int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits)
{
int32_t result;
num_bits -= state->bits_left;
result = ((((int32_t)state->current_word) << (32 - state->bits_left)) >>
(32 - state->bits_left));
bitstream_fill_current(state);
if (num_bits != 0)
result = (result << num_bits) | (state->current_word >> (32 - num_bits));
state->bits_left = 32 - num_bits;
return result;
}

77
libavcodec/liba52/bitstream.h
Unescape View File

@ -1,77 +0,0 @@
/*
* bitstream.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* (stolen from the kernel) */
#ifdef WORDS_BIGENDIAN
# define swab32(x) (x)
#else
# if 0 && 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
void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf);
uint32_t a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits);
int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits);
static inline uint32_t bitstream_get (a52_state_t * state, uint32_t num_bits)
{
uint32_t result;
if (num_bits < state->bits_left) {
result = (state->current_word << (32 - state->bits_left)) >> (32 - num_bits);
state->bits_left -= num_bits;
return result;
}
return a52_bitstream_get_bh (state, num_bits);
}
static inline int32_t bitstream_get_2 (a52_state_t * state, uint32_t num_bits)
{
int32_t result;
if (num_bits < state->bits_left) {
result = (((int32_t)state->current_word) << (32 - state->bits_left)) >> (32 - num_bits);
state->bits_left -= num_bits;
return result;
}
return a52_bitstream_get_bh_2 (state, num_bits);
}

73
libavcodec/liba52/crc.c
Unescape View File

@ -1,73 +0,0 @@
/*
* crc.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 <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
static const uint16_t crc_lut[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
};
uint16_t a52_crc16_block(uint8_t *data,uint32_t num_bytes)
{
uint32_t i;
uint16_t state=0;
for(i=0;i<num_bytes;i++)
state = crc_lut[data[i] ^ (state>>8)] ^ (state<<8);
return state;
}

679
libavcodec/liba52/downmix.c
Unescape View File

@ -1,679 +0,0 @@
/*
* downmix.c
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "a52.h"
#include "a52_internal.h"
#define CONVERT(acmod,output) (((output) << 3) + (acmod))
int a52_downmix_init (int input, int flags, level_t * level,
level_t clev, level_t slev)
{
static uint8_t table[11][8] = {
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO,
A52_STEREO, A52_STEREO, A52_STEREO, A52_STEREO},
{A52_MONO, A52_MONO, A52_MONO, A52_MONO,
A52_MONO, A52_MONO, A52_MONO, A52_MONO},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO,
A52_STEREO, A52_STEREO, A52_STEREO, A52_STEREO},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_3F,
A52_STEREO, A52_3F, A52_STEREO, A52_3F},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO,
A52_2F1R, A52_2F1R, A52_2F1R, A52_2F1R},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO,
A52_2F1R, A52_3F1R, A52_2F1R, A52_3F1R},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_3F,
A52_2F2R, A52_2F2R, A52_2F2R, A52_2F2R},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_3F,
A52_2F2R, A52_3F2R, A52_2F2R, A52_3F2R},
{A52_CHANNEL1, A52_MONO, A52_MONO, A52_MONO,
A52_MONO, A52_MONO, A52_MONO, A52_MONO},
{A52_CHANNEL2, A52_MONO, A52_MONO, A52_MONO,
A52_MONO, A52_MONO, A52_MONO, A52_MONO},
{A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_DOLBY,
A52_DOLBY, A52_DOLBY, A52_DOLBY, A52_DOLBY}
};
int output;
output = flags & A52_CHANNEL_MASK;
if (output > A52_DOLBY)
return -1;
output = table[output][input & 7];
if (output == A52_STEREO &&
(input == A52_DOLBY || (input == A52_3F && clev == LEVEL (LEVEL_3DB))))
output = A52_DOLBY;
if (flags & A52_ADJUST_LEVEL) {
level_t adjust;
switch (CONVERT (input & 7, output)) {
case CONVERT (A52_3F, A52_MONO):
adjust = DIV (LEVEL_3DB, LEVEL (1) + clev);
break;
case CONVERT (A52_STEREO, A52_MONO):
case CONVERT (A52_2F2R, A52_2F1R):
case CONVERT (A52_3F2R, A52_3F1R):
level_3db:
adjust = LEVEL (LEVEL_3DB);
break;
case CONVERT (A52_3F2R, A52_2F1R):
if (clev < LEVEL (LEVEL_PLUS3DB - 1))
goto level_3db;
/* break thru */
case CONVERT (A52_3F, A52_STEREO):
case CONVERT (A52_3F1R, A52_2F1R):
case CONVERT (A52_3F1R, A52_2F2R):
case CONVERT (A52_3F2R, A52_2F2R):
adjust = DIV (1, LEVEL (1) + clev);
break;
case CONVERT (A52_2F1R, A52_MONO):
adjust = DIV (LEVEL_PLUS3DB, LEVEL (2) + slev);
break;
case CONVERT (A52_2F1R, A52_STEREO):
case CONVERT (A52_3F1R, A52_3F):
adjust = DIV (1, LEVEL (1) + MUL_C (slev, LEVEL_3DB));
break;
case CONVERT (A52_3F1R, A52_MONO):
adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + MUL_C (slev, 0.5));
break;
case CONVERT (A52_3F1R, A52_STEREO):
adjust = DIV (1, LEVEL (1) + clev + MUL_C (slev, LEVEL_3DB));
break;
case CONVERT (A52_2F2R, A52_MONO):
adjust = DIV (LEVEL_3DB, LEVEL (1) + slev);
break;
case CONVERT (A52_2F2R, A52_STEREO):
case CONVERT (A52_3F2R, A52_3F):
adjust = DIV (1, LEVEL (1) + slev);
break;
case CONVERT (A52_3F2R, A52_MONO):
adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + slev);
break;
case CONVERT (A52_3F2R, A52_STEREO):
adjust = DIV (1, LEVEL (1) + clev + slev);
break;
case CONVERT (A52_MONO, A52_DOLBY):
adjust = LEVEL (LEVEL_PLUS3DB);
break;
case CONVERT (A52_3F, A52_DOLBY):
case CONVERT (A52_2F1R, A52_DOLBY):
adjust = LEVEL (1 / (1 + LEVEL_3DB));
break;
case CONVERT (A52_3F1R, A52_DOLBY):
case CONVERT (A52_2F2R, A52_DOLBY):
adjust = LEVEL (1 / (1 + 2 * LEVEL_3DB));
break;
case CONVERT (A52_3F2R, A52_DOLBY):
adjust = LEVEL (1 / (1 + 3 * LEVEL_3DB));
break;
default:
return output;
}
*level = MUL_L (*level, adjust);
}
return output;
}
int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
level_t clev, level_t slev)
{
level_t level_3db;
level_3db = MUL_C (level, LEVEL_3DB);
switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
case CONVERT (A52_CHANNEL, A52_CHANNEL):
case CONVERT (A52_MONO, A52_MONO):
case CONVERT (A52_STEREO, A52_STEREO):
case CONVERT (A52_3F, A52_3F):
case CONVERT (A52_2F1R, A52_2F1R):
case CONVERT (A52_3F1R, A52_3F1R):
case CONVERT (A52_2F2R, A52_2F2R):
case CONVERT (A52_3F2R, A52_3F2R):
case CONVERT (A52_STEREO, A52_DOLBY):
coeff[0] = coeff[1] = coeff[2] = coeff[3] = coeff[4] = level;
return 0;
case CONVERT (A52_CHANNEL, A52_MONO):
coeff[0] = coeff[1] = MUL_C (level, LEVEL_6DB);
return 3;
case CONVERT (A52_STEREO, A52_MONO):
coeff[0] = coeff[1] = level_3db;
return 3;
case CONVERT (A52_3F, A52_MONO):
coeff[0] = coeff[2] = level_3db;
coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
return 7;
case CONVERT (A52_2F1R, A52_MONO):
coeff[0] = coeff[1] = level_3db;
coeff[2] = MUL_L (level_3db, slev);
return 7;
case CONVERT (A52_2F2R, A52_MONO):
coeff[0] = coeff[1] = level_3db;
coeff[2] = coeff[3] = MUL_L (level_3db, slev);
return 15;
case CONVERT (A52_3F1R, A52_MONO):
coeff[0] = coeff[2] = level_3db;
coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
coeff[3] = MUL_L (level_3db, slev);
return 15;
case CONVERT (A52_3F2R, A52_MONO):
coeff[0] = coeff[2] = level_3db;
coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
coeff[3] = coeff[4] = MUL_L (level_3db, slev);
return 31;
case CONVERT (A52_MONO, A52_DOLBY):
coeff[0] = level_3db;
return 0;
case CONVERT (A52_3F, A52_DOLBY):
coeff[0] = coeff[2] = coeff[3] = coeff[4] = level;
coeff[1] = level_3db;
return 7;
case CONVERT (A52_3F, A52_STEREO):
case CONVERT (A52_3F1R, A52_2F1R):
case CONVERT (A52_3F2R, A52_2F2R):
coeff[0] = coeff[2] = coeff[3] = coeff[4] = level;
coeff[1] = MUL_L (level, clev);
return 7;
case CONVERT (A52_2F1R, A52_DOLBY):
coeff[0] = coeff[1] = level;
coeff[2] = level_3db;
return 7;
case CONVERT (A52_2F1R, A52_STEREO):
coeff[0] = coeff[1] = level;
coeff[2] = MUL_L (level_3db, slev);
return 7;
case CONVERT (A52_3F1R, A52_DOLBY):
coeff[0] = coeff[2] = level;
coeff[1] = coeff[3] = level_3db;
return 15;
case CONVERT (A52_3F1R, A52_STEREO):
coeff[0] = coeff[2] = level;
coeff[1] = MUL_L (level, clev);
coeff[3] = MUL_L (level_3db, slev);
return 15;
case CONVERT (A52_2F2R, A52_DOLBY):
coeff[0] = coeff[1] = level;
coeff[2] = coeff[3] = level_3db;
return 15;
case CONVERT (A52_2F2R, A52_STEREO):
coeff[0] = coeff[1] = level;
coeff[2] = coeff[3] = MUL_L (level, slev);
return 15;
case CONVERT (A52_3F2R, A52_DOLBY):
coeff[0] = coeff[2] = level;
coeff[1] = coeff[3] = coeff[4] = level_3db;
return 31;
case CONVERT (A52_3F2R, A52_2F1R):
coeff[0] = coeff[2] = level;
coeff[1] = MUL_L (level, clev);
coeff[3] = coeff[4] = level_3db;
return 31;
case CONVERT (A52_3F2R, A52_STEREO):
coeff[0] = coeff[2] = level;
coeff[1] = MUL_L (level, clev);
coeff[3] = coeff[4] = MUL_L (level, slev);
return 31;
case CONVERT (A52_3F1R, A52_3F):
coeff[0] = coeff[1] = coeff[2] = level;
coeff[3] = MUL_L (level_3db, slev);
return 13;
case CONVERT (A52_3F2R, A52_3F):
coeff[0] = coeff[1] = coeff[2] = level;
coeff[3] = coeff[4] = MUL_L (level, slev);
return 29;
case CONVERT (A52_2F2R, A52_2F1R):
coeff[0] = coeff[1] = level;
coeff[2] = coeff[3] = level_3db;
return 12;
case CONVERT (A52_3F2R, A52_3F1R):
coeff[0] = coeff[1] = coeff[2] = level;
coeff[3] = coeff[4] = level_3db;
return 24;
case CONVERT (A52_2F1R, A52_2F2R):
coeff[0] = coeff[1] = level;
coeff[2] = level_3db;
return 0;
case CONVERT (A52_3F1R, A52_2F2R):
coeff[0] = coeff[2] = level;
coeff[1] = MUL_L (level, clev);
coeff[3] = level_3db;
return 7;
case CONVERT (A52_3F1R, A52_3F2R):
coeff[0] = coeff[1] = coeff[2] = level;
coeff[3] = level_3db;
return 0;
case CONVERT (A52_CHANNEL, A52_CHANNEL1):
coeff[0] = level;
coeff[1] = 0;
return 0;
case CONVERT (A52_CHANNEL, A52_CHANNEL2):
coeff[0] = 0;
coeff[1] = level;
return 0;
}
return -1; /* NOTREACHED */
}
static void mix2to1 (sample_t * dest, sample_t * src, sample_t bias)
{
int i;
for (i = 0; i < 256; i++)
dest[i] += BIAS (src[i]);
}
static void mix3to1 (sample_t * samples, sample_t bias)
{
int i;
for (i = 0; i < 256; i++)
samples[i] += BIAS (samples[i + 256] + samples[i + 512]);
}
static void mix4to1 (sample_t * samples, sample_t bias)
{
int i;
for (i = 0; i < 256; i++)
samples[i] += BIAS (samples[i + 256] + samples[i + 512] +
samples[i + 768]);
}
static void mix5to1 (sample_t * samples, sample_t bias)
{
int i;
for (i = 0; i < 256; i++)
samples[i] += BIAS (samples[i + 256] + samples[i + 512] +
samples[i + 768] + samples[i + 1024]);
}
static void mix3to2 (sample_t * samples, sample_t bias)
{
int i;
sample_t common;
for (i = 0; i < 256; i++) {
common = BIAS (samples[i + 256]);
samples[i] += common;
samples[i + 256] = samples[i + 512] + common;
}
}
static void mix21to2 (sample_t * left, sample_t * right, sample_t bias)
{
int i;
sample_t common;
for (i = 0; i < 256; i++) {
common = BIAS (right[i + 256]);
left[i] += common;
right[i] += common;
}
}
static void mix21toS (sample_t * samples, sample_t bias)
{
int i;
sample_t surround;
for (i = 0; i < 256; i++) {
surround = samples[i + 512];
samples[i] += BIAS (-surround);
samples[i + 256] += BIAS (surround);
}
}
static void mix31to2 (sample_t * samples, sample_t bias)
{
int i;
sample_t common;
for (i = 0; i < 256; i++) {
common = BIAS (samples[i + 256] + samples[i + 768]);
samples[i] += common;
samples[i + 256] = samples[i + 512] + common;
}
}
static void mix31toS (sample_t * samples, sample_t bias)
{
int i;
sample_t common, surround;
for (i = 0; i < 256; i++) {
common = BIAS (samples[i + 256]);
surround = samples[i + 768];
samples[i] += common - surround;
samples[i + 256] = samples[i + 512] + common + surround;
}
}
static void mix22toS (sample_t * samples, sample_t bias)
{
int i;
sample_t surround;
for (i = 0; i < 256; i++) {
surround = samples[i + 512] + samples[i + 768];
samples[i] += BIAS (-surround);
samples[i + 256] += BIAS (surround);
}
}
static void mix32to2 (sample_t * samples, sample_t bias)
{
int i;
sample_t common;
for (i = 0; i < 256; i++) {
common = BIAS (samples[i + 256]);
samples[i] += common + samples[i + 768];
samples[i + 256] = common + samples[i + 512] + samples[i + 1024];
}
}
static void mix32toS (sample_t * samples, sample_t bias)
{
int i;
sample_t common, surround;
for (i = 0; i < 256; i++) {
common = BIAS (samples[i + 256]);
surround = samples[i + 768] + samples[i + 1024];
samples[i] += common - surround;
samples[i + 256] = samples[i + 512] + common + surround;
}
}
static void move2to1 (sample_t * src, sample_t * dest, sample_t bias)
{
int i;
for (i = 0; i < 256; i++)
dest[i] = BIAS (src[i] + src[i + 256]);
}
static void zero (sample_t * samples)
{
int i;
for (i = 0; i < 256; i++)
samples[i] = 0;
}
void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias,
level_t clev, level_t slev)
{
switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
case CONVERT (A52_CHANNEL, A52_CHANNEL2):
memcpy (samples, samples + 256, 256 * sizeof (sample_t));
break;
case CONVERT (A52_CHANNEL, A52_MONO):
case CONVERT (A52_STEREO, A52_MONO):
mix_2to1:
mix2to1 (samples, samples + 256, bias);
break;
case CONVERT (A52_2F1R, A52_MONO):
if (slev == 0)
goto mix_2to1;
case CONVERT (A52_3F, A52_MONO):
mix_3to1:
mix3to1 (samples, bias);
break;
case CONVERT (A52_3F1R, A52_MONO):
if (slev == 0)
goto mix_3to1;
case CONVERT (A52_2F2R, A52_MONO):
if (slev == 0)
goto mix_2to1;
mix4to1 (samples, bias);
break;
case CONVERT (A52_3F2R, A52_MONO):
if (slev == 0)
goto mix_3to1;
mix5to1 (samples, bias);
break;
case CONVERT (A52_MONO, A52_DOLBY):
memcpy (samples + 256, samples, 256 * sizeof (sample_t));
break;
case CONVERT (A52_3F, A52_STEREO):
case CONVERT (A52_3F, A52_DOLBY):
mix_3to2:
mix3to2 (samples, bias);
break;
case CONVERT (A52_2F1R, A52_STEREO):
if (slev == 0)
break;
mix21to2 (samples, samples + 256, bias);
break;
case CONVERT (A52_2F1R, A52_DOLBY):
mix21toS (samples, bias);
break;
case CONVERT (A52_3F1R, A52_STEREO):
if (slev == 0)
goto mix_3to2;
mix31to2 (samples, bias);
break;
case CONVERT (A52_3F1R, A52_DOLBY):
mix31toS (samples, bias);
break;
case CONVERT (A52_2F2R, A52_STEREO):
if (slev == 0)
break;
mix2to1 (samples, samples + 512, bias);
mix2to1 (samples + 256, samples + 768, bias);
break;
case CONVERT (A52_2F2R, A52_DOLBY):
mix22toS (samples, bias);
break;
case CONVERT (A52_3F2R, A52_STEREO):
if (slev == 0)
goto mix_3to2;
mix32to2 (samples, bias);
break;
case CONVERT (A52_3F2R, A52_DOLBY):
mix32toS (samples, bias);
break;
case CONVERT (A52_3F1R, A52_3F):
if (slev == 0)
break;
mix21to2 (samples, samples + 512, bias);
break;
case CONVERT (A52_3F2R, A52_3F):
if (slev == 0)
break;
mix2to1 (samples, samples + 768, bias);
mix2to1 (samples + 512, samples + 1024, bias);
break;
case CONVERT (A52_3F1R, A52_2F1R):
mix3to2 (samples, bias);
memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t));
break;
case CONVERT (A52_2F2R, A52_2F1R):
mix2to1 (samples + 512, samples + 768, bias);
break;
case CONVERT (A52_3F2R, A52_2F1R):
mix3to2 (samples, bias);
move2to1 (samples + 768, samples + 512, bias);
break;
case CONVERT (A52_3F2R, A52_3F1R):
mix2to1 (samples + 768, samples + 1024, bias);
break;
case CONVERT (A52_2F1R, A52_2F2R):
memcpy (samples + 768, samples + 512, 256 * sizeof (sample_t));
break;
case CONVERT (A52_3F1R, A52_2F2R):
mix3to2 (samples, bias);
memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t));
break;
case CONVERT (A52_3F2R, A52_2F2R):
mix3to2 (samples, bias);
memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t));
memcpy (samples + 768, samples + 1024, 256 * sizeof (sample_t));
break;
case CONVERT (A52_3F1R, A52_3F2R):
memcpy (samples + 1024, samples + 768, 256 * sizeof (sample_t));
break;
}
}
void a52_upmix (sample_t * samples, int acmod, int output)
{
switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
case CONVERT (A52_CHANNEL, A52_CHANNEL2):
memcpy (samples + 256, samples, 256 * sizeof (sample_t));
break;
case CONVERT (A52_3F2R, A52_MONO):
zero (samples + 1024);
case CONVERT (A52_3F1R, A52_MONO):
case CONVERT (A52_2F2R, A52_MONO):
zero (samples + 768);
case CONVERT (A52_3F, A52_MONO):
case CONVERT (A52_2F1R, A52_MONO):
zero (samples + 512);
case CONVERT (A52_CHANNEL, A52_MONO):
case CONVERT (A52_STEREO, A52_MONO):
zero (samples + 256);
break;
case CONVERT (A52_3F2R, A52_STEREO):
case CONVERT (A52_3F2R, A52_DOLBY):
zero (samples + 1024);
case CONVERT (A52_3F1R, A52_STEREO):
case CONVERT (A52_3F1R, A52_DOLBY):
zero (samples + 768);
case CONVERT (A52_3F, A52_STEREO):
case CONVERT (A52_3F, A52_DOLBY):
mix_3to2:
memcpy (samples + 512, samples + 256, 256 * sizeof (sample_t));
zero (samples + 256);
break;
case CONVERT (A52_2F2R, A52_STEREO):
case CONVERT (A52_2F2R, A52_DOLBY):
zero (samples + 768);
case CONVERT (A52_2F1R, A52_STEREO):
case CONVERT (A52_2F1R, A52_DOLBY):
zero (samples + 512);
break;
case CONVERT (A52_3F2R, A52_3F):
zero (samples + 1024);
case CONVERT (A52_3F1R, A52_3F):
case CONVERT (A52_2F2R, A52_2F1R):
zero (samples + 768);
break;
case CONVERT (A52_3F2R, A52_3F1R):
zero (samples + 1024);
break;
case CONVERT (A52_3F2R, A52_2F1R):
zero (samples + 1024);
case CONVERT (A52_3F1R, A52_2F1R):
mix_31to21:
memcpy (samples + 768, samples + 512, 256 * sizeof (sample_t));
goto mix_3to2;
case CONVERT (A52_3F2R, A52_2F2R):
memcpy (samples + 1024, samples + 768, 256 * sizeof (sample_t));
goto mix_31to21;
}
}

411
libavcodec/liba52/imdct.c
Unescape View File

@ -1,411 +0,0 @@
/*
* imdct.c
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* The ifft algorithms in this file have been largely inspired by Dan
* Bernstein's work, djbfft, available at http://cr.yp.to/djbfft.html
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "a52.h"
#include "a52_internal.h"
#include "mm_accel.h"
typedef struct complex_s {
sample_t real;
sample_t imag;
} complex_t;
static uint8_t fftorder[] = {
0,128, 64,192, 32,160,224, 96, 16,144, 80,208,240,112, 48,176,
8,136, 72,200, 40,168,232,104,248,120, 56,184, 24,152,216, 88,
4,132, 68,196, 36,164,228,100, 20,148, 84,212,244,116, 52,180,
252,124, 60,188, 28,156,220, 92, 12,140, 76,204,236,108, 44,172,
2,130, 66,194, 34,162,226, 98, 18,146, 82,210,242,114, 50,178,
10,138, 74,202, 42,170,234,106,250,122, 58,186, 26,154,218, 90,
254,126, 62,190, 30,158,222, 94, 14,142, 78,206,238,110, 46,174,
6,134, 70,198, 38,166,230,102,246,118, 54,182, 22,150,214, 86
};
/* Root values for IFFT */
static sample_t roots16[3];
static sample_t roots32[7];
static sample_t roots64[15];
static sample_t roots128[31];
/* Twiddle factors for IMDCT */
static complex_t pre1[128];
static complex_t post1[64];
static complex_t pre2[64];
static complex_t post2[32];
static sample_t a52_imdct_window[256];
static void (* ifft128) (complex_t * buf);
static void (* ifft64) (complex_t * buf);
static inline void ifft2 (complex_t * buf)
{
sample_t r, i;
r = buf[0].real;
i = buf[0].imag;
buf[0].real += buf[1].real;
buf[0].imag += buf[1].imag;
buf[1].real = r - buf[1].real;
buf[1].imag = i - buf[1].imag;
}
static inline void ifft4 (complex_t * buf)
{
sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
tmp1 = buf[0].real + buf[1].real;
tmp2 = buf[3].real + buf[2].real;
tmp3 = buf[0].imag + buf[1].imag;
tmp4 = buf[2].imag + buf[3].imag;
tmp5 = buf[0].real - buf[1].real;
tmp6 = buf[0].imag - buf[1].imag;
tmp7 = buf[2].imag - buf[3].imag;
tmp8 = buf[3].real - buf[2].real;
buf[0].real = tmp1 + tmp2;
buf[0].imag = tmp3 + tmp4;
buf[2].real = tmp1 - tmp2;
buf[2].imag = tmp3 - tmp4;
buf[1].real = tmp5 + tmp7;
buf[1].imag = tmp6 + tmp8;
buf[3].real = tmp5 - tmp7;
buf[3].imag = tmp6 - tmp8;
}
/* basic radix-2 ifft butterfly */
#define BUTTERFLY_0(t0,t1,W0,W1,d0,d1) do { \
t0 = MUL (W1, d1) + MUL (W0, d0); \
t1 = MUL (W0, d1) - MUL (W1, d0); \
} while (0)
/* radix-2 ifft butterfly with bias */
#define BUTTERFLY_B(t0,t1,W0,W1,d0,d1) do { \
t0 = BIAS (MUL (d1, W1) + MUL (d0, W0)); \
t1 = BIAS (MUL (d1, W0) - MUL (d0, W1)); \
} while (0)
/* the basic split-radix ifft butterfly */
#define BUTTERFLY(a0,a1,a2,a3,wr,wi) do { \
BUTTERFLY_0 (tmp5, tmp6, wr, wi, a2.real, a2.imag); \
BUTTERFLY_0 (tmp8, tmp7, wr, wi, a3.imag, a3.real); \
tmp1 = tmp5 + tmp7; \
tmp2 = tmp6 + tmp8; \
tmp3 = tmp6 - tmp8; \
tmp4 = tmp7 - tmp5; \
a2.real = a0.real - tmp1; \
a2.imag = a0.imag - tmp2; \
a3.real = a1.real - tmp3; \
a3.imag = a1.imag - tmp4; \
a0.real += tmp1; \
a0.imag += tmp2; \
a1.real += tmp3; \
a1.imag += tmp4; \
} while (0)
/* split-radix ifft butterfly, specialized for wr=1 wi=0 */
#define BUTTERFLY_ZERO(a0,a1,a2,a3) do { \
tmp1 = a2.real + a3.real; \
tmp2 = a2.imag + a3.imag; \
tmp3 = a2.imag - a3.imag; \
tmp4 = a3.real - a2.real; \
a2.real = a0.real - tmp1; \
a2.imag = a0.imag - tmp2; \
a3.real = a1.real - tmp3; \
a3.imag = a1.imag - tmp4; \
a0.real += tmp1; \
a0.imag += tmp2; \
a1.real += tmp3; \
a1.imag += tmp4; \
} while (0)
/* split-radix ifft butterfly, specialized for wr=wi */
#define BUTTERFLY_HALF(a0,a1,a2,a3,w) do { \
tmp5 = MUL (a2.real + a2.imag, w); \
tmp6 = MUL (a2.imag - a2.real, w); \
tmp7 = MUL (a3.real - a3.imag, w); \
tmp8 = MUL (a3.imag + a3.real, w); \
tmp1 = tmp5 + tmp7; \
tmp2 = tmp6 + tmp8; \
tmp3 = tmp6 - tmp8; \
tmp4 = tmp7 - tmp5; \
a2.real = a0.real - tmp1; \
a2.imag = a0.imag - tmp2; \
a3.real = a1.real - tmp3; \
a3.imag = a1.imag - tmp4; \
a0.real += tmp1; \
a0.imag += tmp2; \
a1.real += tmp3; \
a1.imag += tmp4; \
} while (0)
static inline void ifft8 (complex_t * buf)
{
sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
ifft4 (buf);
ifft2 (buf + 4);
ifft2 (buf + 6);
BUTTERFLY_ZERO (buf[0], buf[2], buf[4], buf[6]);
BUTTERFLY_HALF (buf[1], buf[3], buf[5], buf[7], roots16[1]);
}
static void ifft_pass (complex_t * buf, sample_t * weight, int n)
{
complex_t * buf1;
complex_t * buf2;
complex_t * buf3;
sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
int i;
buf++;
buf1 = buf + n;
buf2 = buf + 2 * n;
buf3 = buf + 3 * n;
BUTTERFLY_ZERO (buf[-1], buf1[-1], buf2[-1], buf3[-1]);
i = n - 1;
do {
BUTTERFLY (buf[0], buf1[0], buf2[0], buf3[0],
weight[0], weight[2*i-n]);
buf++;
buf1++;
buf2++;
buf3++;
weight++;
} while (--i);
}
static void ifft16 (complex_t * buf)
{
ifft8 (buf);
ifft4 (buf + 8);
ifft4 (buf + 12);
ifft_pass (buf, roots16, 4);
}
static void ifft32 (complex_t * buf)
{
ifft16 (buf);
ifft8 (buf + 16);
ifft8 (buf + 24);
ifft_pass (buf, roots32, 8);
}
static void ifft64_c (complex_t * buf)
{
ifft32 (buf);
ifft16 (buf + 32);
ifft16 (buf + 48);
ifft_pass (buf, roots64, 16);
}
static void ifft128_c (complex_t * buf)
{
ifft32 (buf);
ifft16 (buf + 32);
ifft16 (buf + 48);
ifft_pass (buf, roots64, 16);
ifft32 (buf + 64);
ifft32 (buf + 96);
ifft_pass (buf, roots128, 32);
}
void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias)
{
int i, k;
sample_t t_r, t_i, a_r, a_i, b_r, b_i, w_1, w_2;
const sample_t * window = a52_imdct_window;
complex_t buf[128];
for (i = 0; i < 128; i++) {
k = fftorder[i];
t_r = pre1[i].real;
t_i = pre1[i].imag;
BUTTERFLY_0 (buf[i].real, buf[i].imag, t_r, t_i, data[k], data[255-k]);
}
ifft128 (buf);
/* Post IFFT complex multiply plus IFFT complex conjugate*/
/* Window and convert to real valued signal */
for (i = 0; i < 64; i++) {
/* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */
t_r = post1[i].real;
t_i = post1[i].imag;
BUTTERFLY_0 (a_r, a_i, t_i, t_r, buf[i].imag, buf[i].real);
BUTTERFLY_0 (b_r, b_i, t_r, t_i, buf[127-i].imag, buf[127-i].real);
w_1 = window[2*i];
w_2 = window[255-2*i];
BUTTERFLY_B (data[255-2*i], data[2*i], w_2, w_1, a_r, delay[2*i]);
delay[2*i] = a_i;
w_1 = window[2*i+1];
w_2 = window[254-2*i];
BUTTERFLY_B (data[2*i+1], data[254-2*i], w_1, w_2, b_r, delay[2*i+1]);
delay[2*i+1] = b_i;
}
}
void a52_imdct_256 (sample_t * data, sample_t * delay, sample_t bias)
{
int i, k;
sample_t t_r, t_i, a_r, a_i, b_r, b_i, c_r, c_i, d_r, d_i, w_1, w_2;
const sample_t * window = a52_imdct_window;
complex_t buf1[64], buf2[64];
/* Pre IFFT complex multiply plus IFFT cmplx conjugate */
for (i = 0; i < 64; i++) {
k = fftorder[i];
t_r = pre2[i].real;
t_i = pre2[i].imag;
BUTTERFLY_0 (buf1[i].real, buf1[i].imag, t_r, t_i, data[k], data[254-k]);
BUTTERFLY_0 (buf2[i].real, buf2[i].imag, t_r, t_i, data[k+1], data[255-k]);
}
ifft64 (buf1);
ifft64 (buf2);
/* Post IFFT complex multiply */
/* Window and convert to real valued signal */
for (i = 0; i < 32; i++) {
/* y1[n] = z1[n] * (xcos2[n] + j * xs in2[n]) ; */
t_r = post2[i].real;
t_i = post2[i].imag;
BUTTERFLY_0 (a_r, a_i, t_i, t_r, buf1[i].imag, buf1[i].real);
BUTTERFLY_0 (b_r, b_i, t_r, t_i, buf1[63-i].imag, buf1[63-i].real);
BUTTERFLY_0 (c_r, c_i, t_i, t_r, buf2[i].imag, buf2[i].real);
BUTTERFLY_0 (d_r, d_i, t_r, t_i, buf2[63-i].imag, buf2[63-i].real);
w_1 = window[2*i];
w_2 = window[255-2*i];
BUTTERFLY_B (data[255-2*i], data[2*i], w_2, w_1, a_r, delay[2*i]);
delay[2*i] = c_i;
w_1 = window[128+2*i];
w_2 = window[127-2*i];
BUTTERFLY_B (data[128+2*i], data[127-2*i], w_1, w_2, a_i, delay[127-2*i]);
delay[127-2*i] = c_r;
w_1 = window[2*i+1];
w_2 = window[254-2*i];
BUTTERFLY_B (data[254-2*i], data[2*i+1], w_2, w_1, b_i, delay[2*i+1]);
delay[2*i+1] = d_r;
w_1 = window[129+2*i];
w_2 = window[126-2*i];
BUTTERFLY_B (data[129+2*i], data[126-2*i], w_1, w_2, b_r, delay[126-2*i]);
delay[126-2*i] = d_i;
}
}
static double besselI0 (double x)
{
double bessel = 1;
int i = 100;
do
bessel = bessel * x / (i * i) + 1;
while (--i);
return bessel;
}
void a52_imdct_init (uint32_t mm_accel)
{
int i, k;
double sum;
double local_imdct_window[256];
/* compute imdct window - kaiser-bessel derived window, alpha = 5.0 */
sum = 0;
for (i = 0; i < 256; i++) {
sum += besselI0 (i * (256 - i) * (5 * M_PI / 256) * (5 * M_PI / 256));
local_imdct_window[i] = sum;
}
sum++;
for (i = 0; i < 256; i++)
a52_imdct_window[i] = SAMPLE (sqrt (local_imdct_window[i] / sum));
for (i = 0; i < 3; i++)
roots16[i] = SAMPLE (cos ((M_PI / 8) * (i + 1)));
for (i = 0; i < 7; i++)
roots32[i] = SAMPLE (cos ((M_PI / 16) * (i + 1)));
for (i = 0; i < 15; i++)
roots64[i] = SAMPLE (cos ((M_PI / 32) * (i + 1)));
for (i = 0; i < 31; i++)
roots128[i] = SAMPLE (cos ((M_PI / 64) * (i + 1)));
for (i = 0; i < 64; i++) {
k = fftorder[i] / 2 + 64;
pre1[i].real = SAMPLE (cos ((M_PI / 256) * (k - 0.25)));
pre1[i].imag = SAMPLE (sin ((M_PI / 256) * (k - 0.25)));
}
for (i = 64; i < 128; i++) {
k = fftorder[i] / 2 + 64;
pre1[i].real = SAMPLE (-cos ((M_PI / 256) * (k - 0.25)));
pre1[i].imag = SAMPLE (-sin ((M_PI / 256) * (k - 0.25)));
}
for (i = 0; i < 64; i++) {
post1[i].real = SAMPLE (cos ((M_PI / 256) * (i + 0.5)));
post1[i].imag = SAMPLE (sin ((M_PI / 256) * (i + 0.5)));
}
for (i = 0; i < 64; i++) {
k = fftorder[i] / 4;
pre2[i].real = SAMPLE (cos ((M_PI / 128) * (k - 0.25)));
pre2[i].imag = SAMPLE (sin ((M_PI / 128) * (k - 0.25)));
}
for (i = 0; i < 32; i++) {
post2[i].real = SAMPLE (cos ((M_PI / 128) * (i + 0.5)));
post2[i].imag = SAMPLE (sin ((M_PI / 128) * (i + 0.5)));
}
#ifdef LIBA52_DJBFFT
if (mm_accel & MM_ACCEL_DJBFFT) {
ifft128 = (void (*) (complex_t *)) fftc4_un128;
ifft64 = (void (*) (complex_t *)) fftc4_un64;
} else
#endif
{
ifft128 = ifft128_c;
ifft64 = ifft64_c;
}
}

42
libavcodec/liba52/mm_accel.h
Unescape View File

@ -1,42 +0,0 @@
/*
* mm_accel.h
* Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MM_ACCEL_H
#define MM_ACCEL_H
/* generic accelerations */
#define MM_ACCEL_DJBFFT 0x00000001
/* x86 accelerations */
#define MM_ACCEL_X86_MMX 0x80000000
#define MM_ACCEL_X86_3DNOW 0x40000000
#define MM_ACCEL_X86_MMXEXT 0x20000000
#define MM_ACCEL_X86_SSE 0x10000000
#define MM_ACCEL_X86_3DNOWEXT 0x08000000
/* PPC accelerations */
#define MM_ACCEL_PPC_ALTIVEC 0x00010000
uint32_t mm_accel (void);
#endif /* MM_ACCEL_H */

939
libavcodec/liba52/parse.c
Unescape View File

@ -1,939 +0,0 @@
/*
* parse.c
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "a52.h"
#include "a52_internal.h"
#include "bitstream.h"
#include "tables.h"
#if defined(HAVE_MEMALIGN) && !defined(__cplusplus)
/* some systems have memalign() but no declaration for it */
void * memalign (size_t align, size_t size);
#else
/* assume malloc alignment is sufficient */
#define memalign(align,size) malloc (size)
#endif
typedef struct {
quantizer_t q1[2];
quantizer_t q2[2];
quantizer_t q4;
int q1_ptr;
int q2_ptr;
int q4_ptr;
} quantizer_set_t;
static uint8_t halfrate[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3};
a52_state_t * a52_init (uint32_t mm_accel)
{
a52_state_t * state;
int i;
state = (a52_state_t *) malloc (sizeof (a52_state_t));
if (state == NULL)
return NULL;
state->samples = (sample_t *) memalign (16, 256 * 12 * sizeof (sample_t));
if (state->samples == NULL) {
free (state);
return NULL;
}
for (i = 0; i < 256 * 12; i++)
state->samples[i] = 0;
state->downmixed = 1;
state->lfsr_state = 1;
a52_imdct_init (mm_accel);
return state;
}
sample_t * a52_samples (a52_state_t * state)
{
return state->samples;
}
int a52_syncinfo (uint8_t * buf, int * flags,
int * sample_rate, int * bit_rate)
{
static int rate[] = { 32, 40, 48, 56, 64, 80, 96, 112,
128, 160, 192, 224, 256, 320, 384, 448,
512, 576, 640};
static uint8_t lfeon[8] = {0x10, 0x10, 0x04, 0x04, 0x04, 0x01, 0x04, 0x01};
int frmsizecod;
int bitrate;
int half;
int acmod;
if ((buf[0] != 0x0b) || (buf[1] != 0x77)) /* syncword */
return 0;
if (buf[5] >= 0x60) /* bsid >= 12 */
return 0;
half = halfrate[buf[5] >> 3];
/* acmod, dsurmod and lfeon */
acmod = buf[6] >> 5;
*flags = ((((buf[6] & 0xf8) == 0x50) ? A52_DOLBY : acmod) |
((buf[6] & lfeon[acmod]) ? A52_LFE : 0));
frmsizecod = buf[4] & 63;
if (frmsizecod >= 38)
return 0;
bitrate = rate [frmsizecod >> 1];
*bit_rate = (bitrate * 1000) >> half;
switch (buf[4] & 0xc0) {
case 0:
*sample_rate = 48000 >> half;
return 4 * bitrate;
case 0x40:
*sample_rate = 44100 >> half;
return 2 * (320 * bitrate / 147 + (frmsizecod & 1));
case 0x80:
*sample_rate = 32000 >> half;
return 6 * bitrate;
default:
return 0;
}
}
int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
level_t * level, sample_t bias)
{
static level_t clev[4] = { LEVEL (LEVEL_3DB), LEVEL (LEVEL_45DB),
LEVEL (LEVEL_6DB), LEVEL (LEVEL_45DB) };
static level_t slev[4] = { LEVEL (LEVEL_3DB), LEVEL (LEVEL_6DB),
0, LEVEL (LEVEL_6DB) };
int chaninfo;
int acmod;
state->fscod = buf[4] >> 6;
state->halfrate = halfrate[buf[5] >> 3];
state->acmod = acmod = buf[6] >> 5;
a52_bitstream_set_ptr (state, buf + 6);
bitstream_get (state, 3); /* skip acmod we already parsed */
if ((acmod == 2) && (bitstream_get (state, 2) == 2)) /* dsurmod */
acmod = A52_DOLBY;
state->clev = state->slev = 0;
if ((acmod & 1) && (acmod != 1))
state->clev = clev[bitstream_get (state, 2)]; /* cmixlev */
if (acmod & 4)
state->slev = slev[bitstream_get (state, 2)]; /* surmixlev */
state->lfeon = bitstream_get (state, 1);
state->output = a52_downmix_init (acmod, *flags, level,
state->clev, state->slev);
if (state->output < 0)
return 1;
if (state->lfeon && (*flags & A52_LFE))
state->output |= A52_LFE;
*flags = state->output;
/* the 2* compensates for differences in imdct */
state->dynrng = state->level = MUL_C (*level, 2);
state->bias = bias;
state->dynrnge = 1;
state->dynrngcall = NULL;
state->cplba.deltbae = DELTA_BIT_NONE;
state->ba[0].deltbae = state->ba[1].deltbae = state->ba[2].deltbae =
state->ba[3].deltbae = state->ba[4].deltbae = DELTA_BIT_NONE;
chaninfo = !acmod;
do {
bitstream_get (state, 5); /* dialnorm */
if (bitstream_get (state, 1)) /* compre */
bitstream_get (state, 8); /* compr */
if (bitstream_get (state, 1)) /* langcode */
bitstream_get (state, 8); /* langcod */
if (bitstream_get (state, 1)) /* audprodie */
bitstream_get (state, 7); /* mixlevel + roomtyp */
} while (chaninfo--);
bitstream_get (state, 2); /* copyrightb + origbs */
if (bitstream_get (state, 1)) /* timecod1e */
bitstream_get (state, 14); /* timecod1 */
if (bitstream_get (state, 1)) /* timecod2e */
bitstream_get (state, 14); /* timecod2 */
if (bitstream_get (state, 1)) { /* addbsie */
int addbsil;
addbsil = bitstream_get (state, 6);
do {
bitstream_get (state, 8); /* addbsi */
} while (addbsil--);
}
return 0;
}
void a52_dynrng (a52_state_t * state,
level_t (* call) (level_t, void *), void * data)
{
state->dynrnge = 0;
if (call) {
state->dynrnge = 1;
state->dynrngcall = call;
state->dynrngdata = data;
}
}
static int parse_exponents (a52_state_t * state, int expstr, int ngrps,
uint8_t exponent, uint8_t * dest)
{
int exps;
while (ngrps--) {
exps = bitstream_get (state, 7);
exponent += exp_1[exps];
if (exponent > 24)
return 1;
switch (expstr) {
case EXP_D45:
*(dest++) = exponent;
*(dest++) = exponent;
case EXP_D25:
*(dest++) = exponent;
case EXP_D15:
*(dest++) = exponent;
}
exponent += exp_2[exps];
if (exponent > 24)
return 1;
switch (expstr) {
case EXP_D45:
*(dest++) = exponent;
*(dest++) = exponent;
case EXP_D25:
*(dest++) = exponent;
case EXP_D15:
*(dest++) = exponent;
}
exponent += exp_3[exps];
if (exponent > 24)
return 1;
switch (expstr) {
case EXP_D45:
*(dest++) = exponent;
*(dest++) = exponent;
case EXP_D25:
*(dest++) = exponent;
case EXP_D15:
*(dest++) = exponent;
}
}
return 0;
}
static int parse_deltba (a52_state_t * state, int8_t * deltba)
{
int deltnseg, deltlen, delta, j;
memset (deltba, 0, 50);
deltnseg = bitstream_get (state, 3);
j = 0;
do {
j += bitstream_get (state, 5);
deltlen = bitstream_get (state, 4);
delta = bitstream_get (state, 3);
delta -= (delta >= 4) ? 3 : 4;
if (!deltlen)
continue;
if (j + deltlen >= 50)
return 1;
while (deltlen--)
deltba[j++] = delta;
} while (deltnseg--);
return 0;
}
static inline int zero_snr_offsets (int nfchans, a52_state_t * state)
{
int i;
if ((state->csnroffst) ||
(state->chincpl && state->cplba.bai >> 3) || /* cplinu, fsnroffst */
(state->lfeon && state->lfeba.bai >> 3)) /* fsnroffst */
return 0;
for (i = 0; i < nfchans; i++)
if (state->ba[i].bai >> 3) /* fsnroffst */
return 0;
return 1;
}
static inline int16_t dither_gen (a52_state_t * state)
{
int16_t nstate;
nstate = dither_lut[state->lfsr_state >> 8] ^ (state->lfsr_state << 8);
state->lfsr_state = (uint16_t) nstate;
return (3 * nstate) >> 2;
}
#ifndef LIBA52_FIXED
#define COEFF(c,t,l,s,e) (c) = (t) * (s)[e]
#else
#define COEFF(c,_t,_l,s,e) do { \
quantizer_t t = (_t); \
level_t l = (_l); \
int shift = e - 5; \
sample_t tmp = t * (l >> 16) + ((t * (l & 0xffff)) >> 16); \
if (shift >= 0) \
(c) = tmp >> shift; \
else \
(c) = tmp << -shift; \
} while (0)
#endif
static void coeff_get (a52_state_t * state, sample_t * coeff,
expbap_t * expbap, quantizer_set_t * quant,
level_t level, int dither, int end)
{
int i;
uint8_t * exp;
int8_t * bap;
#ifndef LIBA52_FIXED
sample_t factor[25];
for (i = 0; i <= 24; i++)
factor[i] = scale_factor[i] * level;
#endif
exp = expbap->exp;
bap = expbap->bap;
for (i = 0; i < end; i++) {
int bapi;
bapi = bap[i];
switch (bapi) {
case 0:
if (dither) {
COEFF (coeff[i], dither_gen (state), level, factor, exp[i]);
continue;
} else {
coeff[i] = 0;
continue;
}
case -1:
if (quant->q1_ptr >= 0) {
COEFF (coeff[i], quant->q1[quant->q1_ptr--], level,
factor, exp[i]);
continue;
} else {
int code;
code = bitstream_get (state, 5);
quant->q1_ptr = 1;
quant->q1[0] = q_1_2[code];
quant->q1[1] = q_1_1[code];
COEFF (coeff[i], q_1_0[code], level, factor, exp[i]);
continue;
}
case -2:
if (quant->q2_ptr >= 0) {
COEFF (coeff[i], quant->q2[quant->q2_ptr--], level,
factor, exp[i]);
continue;
} else {
int code;
code = bitstream_get (state, 7);
quant->q2_ptr = 1;
quant->q2[0] = q_2_2[code];
quant->q2[1] = q_2_1[code];
COEFF (coeff[i], q_2_0[code], level, factor, exp[i]);
continue;
}
case 3:
COEFF (coeff[i], q_3[bitstream_get (state, 3)], level,
factor, exp[i]);
continue;
case -3:
if (quant->q4_ptr == 0) {
quant->q4_ptr = -1;
COEFF (coeff[i], quant->q4, level, factor, exp[i]);
continue;
} else {
int code;
code = bitstream_get (state, 7);
quant->q4_ptr = 0;
quant->q4 = q_4_1[code];
COEFF (coeff[i], q_4_0[code], level, factor, exp[i]);
continue;
}
case 4:
COEFF (coeff[i], q_5[bitstream_get (state, 4)], level,
factor, exp[i]);
continue;
default:
COEFF (coeff[i], bitstream_get_2 (state, bapi) << (16 - bapi),
level, factor, exp[i]);
}
}
}
static void coeff_get_coupling (a52_state_t * state, int nfchans,
level_t * coeff, sample_t (* samples)[256],
quantizer_set_t * quant, uint8_t dithflag[5])
{
int cplbndstrc, bnd, i, i_end, ch;
uint8_t * exp;
int8_t * bap;
level_t cplco[5];
exp = state->cpl_expbap.exp;
bap = state->cpl_expbap.bap;
bnd = 0;
cplbndstrc = state->cplbndstrc;
i = state->cplstrtmant;
while (i < state->cplendmant) {
i_end = i + 12;
while (cplbndstrc & 1) {
cplbndstrc >>= 1;
i_end += 12;
}
cplbndstrc >>= 1;
for (ch = 0; ch < nfchans; ch++)
cplco[ch] = MUL_L (state->cplco[ch][bnd], coeff[ch]);
bnd++;
while (i < i_end) {
quantizer_t cplcoeff;
int bapi;
bapi = bap[i];
switch (bapi) {
case 0:
for (ch = 0; ch < nfchans; ch++)
if ((state->chincpl >> ch) & 1) {
if (dithflag[ch])
#ifndef LIBA52_FIXED
samples[ch][i] = (scale_factor[exp[i]] *
cplco[ch] * dither_gen (state));
#else
COEFF (samples[ch][i], dither_gen (state),
cplco[ch], scale_factor, exp[i]);
#endif
else
samples[ch][i] = 0;
}
i++;
continue;
case -1:
if (quant->q1_ptr >= 0) {
cplcoeff = quant->q1[quant->q1_ptr--];
break;
} else {
int code;
code = bitstream_get (state, 5);
quant->q1_ptr = 1;
quant->q1[0] = q_1_2[code];
quant->q1[1] = q_1_1[code];
cplcoeff = q_1_0[code];
break;
}
case -2:
if (quant->q2_ptr >= 0) {
cplcoeff = quant->q2[quant->q2_ptr--];
break;
} else {
int code;
code = bitstream_get (state, 7);
quant->q2_ptr = 1;
quant->q2[0] = q_2_2[code];
quant->q2[1] = q_2_1[code];
cplcoeff = q_2_0[code];
break;
}
case 3:
cplcoeff = q_3[bitstream_get (state, 3)];
break;
case -3:
if (quant->q4_ptr == 0) {
quant->q4_ptr = -1;
cplcoeff = quant->q4;
break;
} else {
int code;
code = bitstream_get (state, 7);
quant->q4_ptr = 0;
quant->q4 = q_4_1[code];
cplcoeff = q_4_0[code];
break;
}
case 4:
cplcoeff = q_5[bitstream_get (state, 4)];
break;
default:
cplcoeff = bitstream_get_2 (state, bapi) << (16 - bapi);
}
#ifndef LIBA52_FIXED
cplcoeff *= scale_factor[exp[i]];
#endif
for (ch = 0; ch < nfchans; ch++)
if ((state->chincpl >> ch) & 1)
#ifndef LIBA52_FIXED
samples[ch][i] = cplcoeff * cplco[ch];
#else
COEFF (samples[ch][i], cplcoeff, cplco[ch],
scale_factor, exp[i]);
#endif
i++;
}
}
}
int a52_block (a52_state_t * state)
{
static const uint8_t nfchans_tbl[] = {2, 1, 2, 3, 3, 4, 4, 5, 1, 1, 2};
static int rematrix_band[4] = {25, 37, 61, 253};
int i, nfchans, chaninfo;
uint8_t cplexpstr, chexpstr[5], lfeexpstr, do_bit_alloc, done_cpl;
uint8_t blksw[5], dithflag[5];
level_t coeff[5];
int chanbias;
quantizer_set_t quant;
sample_t * samples;
nfchans = nfchans_tbl[state->acmod];
for (i = 0; i < nfchans; i++)
blksw[i] = bitstream_get (state, 1);
for (i = 0; i < nfchans; i++)
dithflag[i] = bitstream_get (state, 1);
chaninfo = !state->acmod;
do {
if (bitstream_get (state, 1)) { /* dynrnge */
int dynrng;
dynrng = bitstream_get_2 (state, 8);
if (state->dynrnge) {
level_t range;
#if !defined(LIBA52_FIXED)
range = ((((dynrng & 0x1f) | 0x20) << 13) *
scale_factor[3 - (dynrng >> 5)]);
#else
range = ((dynrng & 0x1f) | 0x20) << (21 + (dynrng >> 5));
#endif
if (state->dynrngcall)
range = state->dynrngcall (range, state->dynrngdata);
state->dynrng = MUL_L (state->level, range);
}
}
} while (chaninfo--);
if (bitstream_get (state, 1)) { /* cplstre */
state->chincpl = 0;
if (bitstream_get (state, 1)) { /* cplinu */
static uint8_t bndtab[16] = {31, 35, 37, 39, 41, 42, 43, 44,
45, 45, 46, 46, 47, 47, 48, 48};
int cplbegf;
int cplendf;
int ncplsubnd;
for (i = 0; i < nfchans; i++)
state->chincpl |= bitstream_get (state, 1) << i;
switch (state->acmod) {
case 0: case 1:
return 1;
case 2:
state->phsflginu = bitstream_get (state, 1);
}
cplbegf = bitstream_get (state, 4);
cplendf = bitstream_get (state, 4);
if (cplendf + 3 - cplbegf < 0)
return 1;
state->ncplbnd = ncplsubnd = cplendf + 3 - cplbegf;
state->cplstrtbnd = bndtab[cplbegf];
state->cplstrtmant = cplbegf * 12 + 37;
state->cplendmant = cplendf * 12 + 73;
state->cplbndstrc = 0;
for (i = 0; i < ncplsubnd - 1; i++)
if (bitstream_get (state, 1)) {
state->cplbndstrc |= 1 << i;
state->ncplbnd--;
}
}
}
if (state->chincpl) { /* cplinu */
int j, cplcoe;
cplcoe = 0;
for (i = 0; i < nfchans; i++)
if ((state->chincpl) >> i & 1)
if (bitstream_get (state, 1)) { /* cplcoe */
int mstrcplco, cplcoexp, cplcomant;
cplcoe = 1;
mstrcplco = 3 * bitstream_get (state, 2);
for (j = 0; j < state->ncplbnd; j++) {
cplcoexp = bitstream_get (state, 4);
cplcomant = bitstream_get (state, 4);
if (cplcoexp == 15)
cplcomant <<= 14;
else
cplcomant = (cplcomant | 0x10) << 13;
#ifndef LIBA52_FIXED
state->cplco[i][j] =
cplcomant * scale_factor[cplcoexp + mstrcplco];
#else
state->cplco[i][j] = (cplcomant << 11) >> (cplcoexp + mstrcplco);
#endif
}
}
if ((state->acmod == 2) && state->phsflginu && cplcoe)
for (j = 0; j < state->ncplbnd; j++)
if (bitstream_get (state, 1)) /* phsflg */
state->cplco[1][j] = -state->cplco[1][j];
}
if ((state->acmod == 2) && (bitstream_get (state, 1))) { /* rematstr */
int end;
state->rematflg = 0;
end = (state->chincpl) ? state->cplstrtmant : 253; /* cplinu */
i = 0;
do
state->rematflg |= bitstream_get (state, 1) << i;
while (rematrix_band[i++] < end);
}
cplexpstr = EXP_REUSE;
lfeexpstr = EXP_REUSE;
if (state->chincpl) /* cplinu */
cplexpstr = bitstream_get (state, 2);
for (i = 0; i < nfchans; i++)
chexpstr[i] = bitstream_get (state, 2);
if (state->lfeon)
lfeexpstr = bitstream_get (state, 1);
for (i = 0; i < nfchans; i++)
if (chexpstr[i] != EXP_REUSE) {
if ((state->chincpl >> i) & 1)
state->endmant[i] = state->cplstrtmant;
else {
int chbwcod;
chbwcod = bitstream_get (state, 6);
if (chbwcod > 60)
return 1;
state->endmant[i] = chbwcod * 3 + 73;
}
}
do_bit_alloc = 0;
if (cplexpstr != EXP_REUSE) {
int cplabsexp, ncplgrps;
do_bit_alloc = 64;
ncplgrps = ((state->cplendmant - state->cplstrtmant) /
(3 << (cplexpstr - 1)));
cplabsexp = bitstream_get (state, 4) << 1;
if (parse_exponents (state, cplexpstr, ncplgrps, cplabsexp,
state->cpl_expbap.exp + state->cplstrtmant))
return 1;
}
for (i = 0; i < nfchans; i++)
if (chexpstr[i] != EXP_REUSE) {
int grp_size, nchgrps;
do_bit_alloc |= 1 << i;
grp_size = 3 << (chexpstr[i] - 1);
nchgrps = (state->endmant[i] + grp_size - 4) / grp_size;
state->fbw_expbap[i].exp[0] = bitstream_get (state, 4);
if (parse_exponents (state, chexpstr[i], nchgrps,
state->fbw_expbap[i].exp[0],
state->fbw_expbap[i].exp + 1))
return 1;
bitstream_get (state, 2); /* gainrng */
}
if (lfeexpstr != EXP_REUSE) {
do_bit_alloc |= 32;
state->lfe_expbap.exp[0] = bitstream_get (state, 4);
if (parse_exponents (state, lfeexpstr, 2, state->lfe_expbap.exp[0],
state->lfe_expbap.exp + 1))
return 1;
}
if (bitstream_get (state, 1)) { /* baie */
do_bit_alloc = 127;
state->bai = bitstream_get (state, 11);
}
if (bitstream_get (state, 1)) { /* snroffste */
do_bit_alloc = 127;
state->csnroffst = bitstream_get (state, 6);
if (state->chincpl) /* cplinu */
state->cplba.bai = bitstream_get (state, 7);
for (i = 0; i < nfchans; i++)
state->ba[i].bai = bitstream_get (state, 7);
if (state->lfeon)
state->lfeba.bai = bitstream_get (state, 7);
}
if ((state->chincpl) && (bitstream_get (state, 1))) { /* cplleake */
do_bit_alloc |= 64;
state->cplfleak = 9 - bitstream_get (state, 3);
state->cplsleak = 9 - bitstream_get (state, 3);
}
if (bitstream_get (state, 1)) { /* deltbaie */
do_bit_alloc = 127;
if (state->chincpl) /* cplinu */
state->cplba.deltbae = bitstream_get (state, 2);
for (i = 0; i < nfchans; i++)
state->ba[i].deltbae = bitstream_get (state, 2);
if (state->chincpl && /* cplinu */
(state->cplba.deltbae == DELTA_BIT_NEW) &&
parse_deltba (state, state->cplba.deltba))
return 1;
for (i = 0; i < nfchans; i++)
if ((state->ba[i].deltbae == DELTA_BIT_NEW) &&
parse_deltba (state, state->ba[i].deltba))
return 1;
}
if (do_bit_alloc) {
if (zero_snr_offsets (nfchans, state)) {
memset (state->cpl_expbap.bap, 0, sizeof (state->cpl_expbap.bap));
for (i = 0; i < nfchans; i++)
memset (state->fbw_expbap[i].bap, 0,
sizeof (state->fbw_expbap[i].bap));
memset (state->lfe_expbap.bap, 0, sizeof (state->lfe_expbap.bap));
} else {
if (state->chincpl && (do_bit_alloc & 64)) /* cplinu */
a52_bit_allocate (state, &state->cplba, state->cplstrtbnd,
state->cplstrtmant, state->cplendmant,
state->cplfleak << 8, state->cplsleak << 8,
&state->cpl_expbap);
for (i = 0; i < nfchans; i++)
if (do_bit_alloc & (1 << i))
a52_bit_allocate (state, state->ba + i, 0, 0,
state->endmant[i], 0, 0,
state->fbw_expbap +i);
if (state->lfeon && (do_bit_alloc & 32)) {
state->lfeba.deltbae = DELTA_BIT_NONE;
a52_bit_allocate (state, &state->lfeba, 0, 0, 7, 0, 0,
&state->lfe_expbap);
}
}
}
if (bitstream_get (state, 1)) { /* skiple */
i = bitstream_get (state, 9); /* skipl */
while (i--)
bitstream_get (state, 8);
}
samples = state->samples;
if (state->output & A52_LFE)
samples += 256; /* shift for LFE channel */
chanbias = a52_downmix_coeff (coeff, state->acmod, state->output,
state->dynrng, state->clev, state->slev);
quant.q1_ptr = quant.q2_ptr = quant.q4_ptr = -1;
done_cpl = 0;
for (i = 0; i < nfchans; i++) {
int j;
coeff_get (state, samples + 256 * i, state->fbw_expbap +i, &quant,
coeff[i], dithflag[i], state->endmant[i]);
if ((state->chincpl >> i) & 1) {
if (!done_cpl) {
done_cpl = 1;
coeff_get_coupling (state, nfchans, coeff,
(sample_t (*)[256])samples, &quant,
dithflag);
}
j = state->cplendmant;
} else
j = state->endmant[i];
do
(samples + 256 * i)[j] = 0;
while (++j < 256);
}
if (state->acmod == 2) {
int j, end, band, rematflg;
end = ((state->endmant[0] < state->endmant[1]) ?
state->endmant[0] : state->endmant[1]);
i = 0;
j = 13;
rematflg = state->rematflg;
do {
if (! (rematflg & 1)) {
rematflg >>= 1;
j = rematrix_band[i++];
continue;
}
rematflg >>= 1;
band = rematrix_band[i++];
if (band > end)
band = end;
do {
sample_t tmp0, tmp1;
tmp0 = samples[j];
tmp1 = (samples+256)[j];
samples[j] = tmp0 + tmp1;
(samples+256)[j] = tmp0 - tmp1;
} while (++j < band);
} while (j < end);
}
if (state->lfeon) {
if (state->output & A52_LFE) {
coeff_get (state, samples - 256, &state->lfe_expbap, &quant,
state->dynrng, 0, 7);
for (i = 7; i < 256; i++)
(samples-256)[i] = 0;
a52_imdct_512 (samples - 256, samples + 1536 - 256, state->bias);
} else {
/* just skip the LFE coefficients */
coeff_get (state, samples + 1280, &state->lfe_expbap, &quant,
0, 0, 7);
}
}
i = 0;
if (nfchans_tbl[state->output & A52_CHANNEL_MASK] < nfchans)
for (i = 1; i < nfchans; i++)
if (blksw[i] != blksw[0])
break;
if (i < nfchans) {
if (state->downmixed) {
state->downmixed = 0;
a52_upmix (samples + 1536, state->acmod, state->output);
}
for (i = 0; i < nfchans; i++) {
sample_t bias;
bias = 0;
if (!(chanbias & (1 << i)))
bias = state->bias;
if (coeff[i]) {
if (blksw[i])
a52_imdct_256 (samples + 256 * i, samples + 1536 + 256 * i,
bias);
else
a52_imdct_512 (samples + 256 * i, samples + 1536 + 256 * i,
bias);
} else {
int j;
for (j = 0; j < 256; j++)
(samples + 256 * i)[j] = bias;
}
}
a52_downmix (samples, state->acmod, state->output, state->bias,
state->clev, state->slev);
} else {
nfchans = nfchans_tbl[state->output & A52_CHANNEL_MASK];
a52_downmix (samples, state->acmod, state->output, 0,
state->clev, state->slev);
if (!state->downmixed) {
state->downmixed = 1;
a52_downmix (samples + 1536, state->acmod, state->output, 0,
state->clev, state->slev);
}
if (blksw[0])
for (i = 0; i < nfchans; i++)
a52_imdct_256 (samples + 256 * i, samples + 1536 + 256 * i,
state->bias);
else
for (i = 0; i < nfchans; i++)
a52_imdct_512 (samples + 256 * i, samples + 1536 + 256 * i,
state->bias);
}
return 0;
}
void a52_free (a52_state_t * state)
{
free (state->samples);
free (state);
}

63
libavcodec/liba52/resample.c
Unescape View File

@ -1,63 +0,0 @@
/*
* copyright (C) 2001 Arpad Gereoffy
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
// a52_resample_init should find the requested converter (from type flags ->
// given number of channels) and set up some function pointers...
// a52_resample() should do the conversion.
#include "a52.h"
#include "mm_accel.h"
#include "config.h"
#include "../../libpostproc/mangle.h"
int (* a52_resample) (float * _f, int16_t * s16)=NULL;
#include "resample_c.c"
#ifdef ARCH_X86_32
#include "resample_mmx.c"
#endif
void* a52_resample_init(uint32_t mm_accel,int flags,int chans){
void* tmp;
#ifdef ARCH_X86_32
if(mm_accel&MM_ACCEL_X86_MMX){
tmp=a52_resample_MMX(flags,chans);
if(tmp){
if(a52_resample==NULL) av_log(NULL, AV_LOG_INFO, "Using MMX optimized resampler\n");
a52_resample=tmp;
return tmp;
}
}
#endif
tmp=a52_resample_C(flags,chans);
if(tmp){
if(a52_resample==NULL) av_log(NULL, AV_LOG_INFO, "No accelerated resampler found\n");
a52_resample=tmp;
return tmp;
}
av_log(NULL, AV_LOG_ERROR, "Unimplemented resampler for mode 0x%X -> %d channels conversion - Contact MPlayer developers!\n", flags, chans);
return NULL;
}

203
libavcodec/liba52/resample_c.c
Unescape View File

@ -1,203 +0,0 @@
/*
* this code is based on a52dec/libao/audio_out_oss.c
* copyright (C) 2001 Arpad Gereoffy
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
static inline int16_t convert (int32_t i)
{
if (i > 0x43c07fff)
return 32767;
else if (i < 0x43bf8000)
return -32768;
else
return i - 0x43c00000;
}
static int a52_resample_MONO_to_5_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[5*i] = s16[5*i+1] = s16[5*i+2] = s16[5*i+3] = 0;
s16[5*i+4] = convert (f[i]);
}
return 5*256;
}
static int a52_resample_MONO_to_1_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[i] = convert (f[i]);
}
return 1*256;
}
static int a52_resample_STEREO_to_2_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[2*i] = convert (f[i]);
s16[2*i+1] = convert (f[i+256]);
}
return 2*256;
}
static int a52_resample_3F_to_5_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[5*i] = convert (f[i]);
s16[5*i+1] = convert (f[i+512]);
s16[5*i+2] = s16[5*i+3] = 0;
s16[5*i+4] = convert (f[i+256]);
}
return 5*256;
}
static int a52_resample_2F_2R_to_4_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[4*i] = convert (f[i]);
s16[4*i+1] = convert (f[i+256]);
s16[4*i+2] = convert (f[i+512]);
s16[4*i+3] = convert (f[i+768]);
}
return 4*256;
}
static int a52_resample_3F_2R_to_5_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[5*i] = convert (f[i]);
s16[5*i+1] = convert (f[i+512]);
s16[5*i+2] = convert (f[i+768]);
s16[5*i+3] = convert (f[i+1024]);
s16[5*i+4] = convert (f[i+256]);
}
return 5*256;
}
static int a52_resample_MONO_LFE_to_6_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[6*i] = s16[6*i+1] = s16[6*i+2] = s16[6*i+3] = 0;
s16[6*i+4] = convert (f[i+256]);
s16[6*i+5] = convert (f[i]);
}
return 6*256;
}
static int a52_resample_STEREO_LFE_to_6_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[6*i] = convert (f[i+256]);
s16[6*i+1] = convert (f[i+512]);
s16[6*i+2] = s16[6*i+3] = s16[6*i+4] = 0;
s16[6*i+5] = convert (f[i]);
}
return 6*256;
}
static int a52_resample_3F_LFE_to_6_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[6*i] = convert (f[i+256]);
s16[6*i+1] = convert (f[i+768]);
s16[6*i+2] = s16[6*i+3] = 0;
s16[6*i+4] = convert (f[i+512]);
s16[6*i+5] = convert (f[i]);
}
return 6*256;
}
static int a52_resample_2F_2R_LFE_to_6_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[6*i] = convert (f[i+256]);
s16[6*i+1] = convert (f[i+512]);
s16[6*i+2] = convert (f[i+768]);
s16[6*i+3] = convert (f[i+1024]);
s16[6*i+4] = 0;
s16[6*i+5] = convert (f[i]);
}
return 6*256;
}
static int a52_resample_3F_2R_LFE_to_6_C(float * _f, int16_t * s16){
int i;
int32_t * f = (int32_t *) _f;
for (i = 0; i < 256; i++) {
s16[6*i] = convert (f[i+256]);
s16[6*i+1] = convert (f[i+768]);
s16[6*i+2] = convert (f[i+1024]);
s16[6*i+3] = convert (f[i+1280]);
s16[6*i+4] = convert (f[i+512]);
s16[6*i+5] = convert (f[i]);
}
return 6*256;
}
static void* a52_resample_C(int flags, int ch){
switch (flags) {
case A52_MONO:
if(ch==5) return a52_resample_MONO_to_5_C;
if(ch==1) return a52_resample_MONO_to_1_C;
break;
case A52_CHANNEL:
case A52_STEREO:
case A52_DOLBY:
if(ch==2) return a52_resample_STEREO_to_2_C;
break;
case A52_3F:
if(ch==5) return a52_resample_3F_to_5_C;
break;
case A52_2F2R:
if(ch==4) return a52_resample_2F_2R_to_4_C;
break;
case A52_3F2R:
if(ch==5) return a52_resample_3F_2R_to_5_C;
break;
case A52_MONO | A52_LFE:
if(ch==6) return a52_resample_MONO_LFE_to_6_C;
break;
case A52_CHANNEL | A52_LFE:
case A52_STEREO | A52_LFE:
case A52_DOLBY | A52_LFE:
if(ch==6) return a52_resample_STEREO_LFE_to_6_C;
break;
case A52_3F | A52_LFE:
if(ch==6) return a52_resample_3F_LFE_to_6_C;
break;
case A52_2F2R | A52_LFE:
if(ch==6) return a52_resample_2F_2R_LFE_to_6_C;
break;
case A52_3F2R | A52_LFE:
if(ch==6) return a52_resample_3F_2R_LFE_to_6_C;
break;
}
return NULL;
}

537
libavcodec/liba52/resample_mmx.c
Unescape View File

@ -1,537 +0,0 @@
/*
* resample_mmx.c
* Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* optimization TODO / NOTES
movntq is slightly faster (0.5% with the current test.c benchmark)
(but thats just test.c so that needs to be testd in reallity)
and it would mean (C / MMX2 / MMX / 3DNOW) versions
*/
static uint64_t __attribute__((aligned(8))) attribute_used magicF2W= 0x43c0000043c00000LL;
static uint64_t __attribute__((aligned(8))) attribute_used wm1010= 0xFFFF0000FFFF0000LL;
static uint64_t __attribute__((aligned(8))) attribute_used wm0101= 0x0000FFFF0000FFFFLL;
static uint64_t __attribute__((aligned(8))) attribute_used wm1100= 0xFFFFFFFF00000000LL;
static int a52_resample_MONO_to_5_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-512, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"movq "MANGLE(wm1100)", %%mm3 \n\t"
"movq "MANGLE(wm0101)", %%mm4 \n\t"
"movq "MANGLE(wm1010)", %%mm5 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"1: \n\t"
"movq (%1, %%esi, 2), %%mm0 \n\t"
"movq 8(%1, %%esi, 2), %%mm1 \n\t"
"leal (%%esi, %%esi, 4), %%edi \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"pand %%mm4, %%mm0 \n\t"
"pand %%mm5, %%mm1 \n\t"
"movq %%mm6, (%0, %%edi) \n\t" // 0 0 0 0
"movd %%mm0, 8(%0, %%edi) \n\t" // A 0
"pand %%mm3, %%mm0 \n\t"
"movd %%mm6, 12(%0, %%edi) \n\t" // 0 0
"movd %%mm1, 16(%0, %%edi) \n\t" // 0 B
"pand %%mm3, %%mm1 \n\t"
"movd %%mm6, 20(%0, %%edi) \n\t" // 0 0
"movq %%mm0, 24(%0, %%edi) \n\t" // 0 0 C 0
"movq %%mm1, 32(%0, %%edi) \n\t" // 0 0 0 B
"addl $8, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1280), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 5*256;
}
static int a52_resample_STEREO_to_2_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
/* benchmark scores are 0.3% better with SSE but we would need to set bias=0 and premultiply it
#ifdef HAVE_SSE
asm volatile(
"movl $-1024, %%esi \n\t"
"1: \n\t"
"cvtps2pi (%1, %%esi), %%mm0 \n\t"
"cvtps2pi 1024(%1, %%esi), %%mm2\n\t"
"movq %%mm0, %%mm1 \n\t"
"punpcklwd %%mm2, %%mm0 \n\t"
"punpckhwd %%mm2, %%mm1 \n\t"
"movq %%mm0, (%0, %%esi) \n\t"
"movq %%mm1, 8(%0, %%esi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+512), "r" (f+256)
:"%esi", "memory"
);*/
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"1: \n\t"
"movq (%1, %%esi), %%mm0 \n\t"
"movq 8(%1, %%esi), %%mm1 \n\t"
"movq 1024(%1, %%esi), %%mm2 \n\t"
"movq 1032(%1, %%esi), %%mm3 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"packssdw %%mm3, %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"punpcklwd %%mm2, %%mm0 \n\t"
"punpckhwd %%mm2, %%mm1 \n\t"
"movq %%mm0, (%0, %%esi) \n\t"
"movq %%mm1, 8(%0, %%esi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+512), "r" (f+256)
:"%esi", "memory"
);
return 2*256;
}
static int a52_resample_3F_to_5_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"movq %%mm7, %%mm5 \n\t"
"punpckldq %%mm6, %%mm5 \n\t"
"1: \n\t"
"movd (%1, %%esi), %%mm0 \n\t"
"punpckldq 2048(%1, %%esi), %%mm0\n\t"
"movd 1024(%1, %%esi), %%mm1 \n\t"
"punpckldq 4(%1, %%esi), %%mm1 \n\t"
"movd 2052(%1, %%esi), %%mm2 \n\t"
"movq %%mm7, %%mm3 \n\t"
"punpckldq 1028(%1, %%esi), %%mm3\n\t"
"movd 8(%1, %%esi), %%mm4 \n\t"
"punpckldq 2056(%1, %%esi), %%mm4\n\t"
"leal (%%esi, %%esi, 4), %%edi \n\t"
"sarl $1, %%edi \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm5, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"psubd %%mm7, %%mm4 \n\t"
"packssdw %%mm6, %%mm0 \n\t"
"packssdw %%mm2, %%mm1 \n\t"
"packssdw %%mm4, %%mm3 \n\t"
"movq %%mm0, (%0, %%edi) \n\t"
"movq %%mm1, 8(%0, %%edi) \n\t"
"movq %%mm3, 16(%0, %%edi) \n\t"
"movd 1032(%1, %%esi), %%mm1 \n\t"
"punpckldq 12(%1, %%esi), %%mm1\n\t"
"movd 2060(%1, %%esi), %%mm2 \n\t"
"movq %%mm7, %%mm3 \n\t"
"punpckldq 1036(%1, %%esi), %%mm3\n\t"
"pxor %%mm0, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm5, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"packssdw %%mm3, %%mm2 \n\t"
"movq %%mm0, 24(%0, %%edi) \n\t"
"movq %%mm2, 32(%0, %%edi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1280), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 5*256;
}
static int a52_resample_2F_2R_to_4_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"1: \n\t"
"movq (%1, %%esi), %%mm0 \n\t"
"movq 8(%1, %%esi), %%mm1 \n\t"
"movq 1024(%1, %%esi), %%mm2 \n\t"
"movq 1032(%1, %%esi), %%mm3 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"packssdw %%mm3, %%mm2 \n\t"
"movq 2048(%1, %%esi), %%mm3 \n\t"
"movq 2056(%1, %%esi), %%mm4 \n\t"
"movq 3072(%1, %%esi), %%mm5 \n\t"
"movq 3080(%1, %%esi), %%mm6 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"psubd %%mm7, %%mm4 \n\t"
"psubd %%mm7, %%mm5 \n\t"
"psubd %%mm7, %%mm6 \n\t"
"packssdw %%mm4, %%mm3 \n\t"
"packssdw %%mm6, %%mm5 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm3, %%mm4 \n\t"
"punpcklwd %%mm2, %%mm0 \n\t"
"punpckhwd %%mm2, %%mm1 \n\t"
"punpcklwd %%mm5, %%mm3 \n\t"
"punpckhwd %%mm5, %%mm4 \n\t"
"movq %%mm0, %%mm2 \n\t"
"movq %%mm1, %%mm5 \n\t"
"punpckldq %%mm3, %%mm0 \n\t"
"punpckhdq %%mm3, %%mm2 \n\t"
"punpckldq %%mm4, %%mm1 \n\t"
"punpckhdq %%mm4, %%mm5 \n\t"
"movq %%mm0, (%0, %%esi,2) \n\t"
"movq %%mm2, 8(%0, %%esi,2) \n\t"
"movq %%mm1, 16(%0, %%esi,2) \n\t"
"movq %%mm5, 24(%0, %%esi,2) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1024), "r" (f+256)
:"%esi", "memory"
);
return 4*256;
}
static int a52_resample_3F_2R_to_5_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"1: \n\t"
"movd (%1, %%esi), %%mm0 \n\t"
"punpckldq 2048(%1, %%esi), %%mm0\n\t"
"movd 3072(%1, %%esi), %%mm1 \n\t"
"punpckldq 4096(%1, %%esi), %%mm1\n\t"
"movd 1024(%1, %%esi), %%mm2 \n\t"
"punpckldq 4(%1, %%esi), %%mm2 \n\t"
"movd 2052(%1, %%esi), %%mm3 \n\t"
"punpckldq 3076(%1, %%esi), %%mm3\n\t"
"movd 4100(%1, %%esi), %%mm4 \n\t"
"punpckldq 1028(%1, %%esi), %%mm4\n\t"
"movd 8(%1, %%esi), %%mm5 \n\t"
"punpckldq 2056(%1, %%esi), %%mm5\n\t"
"leal (%%esi, %%esi, 4), %%edi \n\t"
"sarl $1, %%edi \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"psubd %%mm7, %%mm4 \n\t"
"psubd %%mm7, %%mm5 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"packssdw %%mm3, %%mm2 \n\t"
"packssdw %%mm5, %%mm4 \n\t"
"movq %%mm0, (%0, %%edi) \n\t"
"movq %%mm2, 8(%0, %%edi) \n\t"
"movq %%mm4, 16(%0, %%edi) \n\t"
"movd 3080(%1, %%esi), %%mm0 \n\t"
"punpckldq 4104(%1, %%esi), %%mm0\n\t"
"movd 1032(%1, %%esi), %%mm1 \n\t"
"punpckldq 12(%1, %%esi), %%mm1\n\t"
"movd 2060(%1, %%esi), %%mm2 \n\t"
"punpckldq 3084(%1, %%esi), %%mm2\n\t"
"movd 4108(%1, %%esi), %%mm3 \n\t"
"punpckldq 1036(%1, %%esi), %%mm3\n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"packssdw %%mm3, %%mm2 \n\t"
"movq %%mm0, 24(%0, %%edi) \n\t"
"movq %%mm2, 32(%0, %%edi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1280), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 5*256;
}
static int a52_resample_MONO_LFE_to_6_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"1: \n\t"
"movq 1024(%1, %%esi), %%mm0 \n\t"
"movq 1032(%1, %%esi), %%mm1 \n\t"
"movq (%1, %%esi), %%mm2 \n\t"
"movq 8(%1, %%esi), %%mm3 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"packssdw %%mm1, %%mm0 \n\t"
"packssdw %%mm3, %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"punpcklwd %%mm2, %%mm0 \n\t"
"punpckhwd %%mm2, %%mm1 \n\t"
"leal (%%esi, %%esi, 2), %%edi \n\t"
"movq %%mm6, (%0, %%edi) \n\t"
"movd %%mm0, 8(%0, %%edi) \n\t"
"punpckhdq %%mm0, %%mm0 \n\t"
"movq %%mm6, 12(%0, %%edi) \n\t"
"movd %%mm0, 20(%0, %%edi) \n\t"
"movq %%mm6, 24(%0, %%edi) \n\t"
"movd %%mm1, 32(%0, %%edi) \n\t"
"punpckhdq %%mm1, %%mm1 \n\t"
"movq %%mm6, 36(%0, %%edi) \n\t"
"movd %%mm1, 44(%0, %%edi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1536), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 6*256;
}
static int a52_resample_STEREO_LFE_to_6_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"1: \n\t"
"movq 1024(%1, %%esi), %%mm0 \n\t"
"movq 2048(%1, %%esi), %%mm1 \n\t"
"movq (%1, %%esi), %%mm5 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm5 \n\t"
"leal (%%esi, %%esi, 2), %%edi \n\t"
"pxor %%mm4, %%mm4 \n\t"
"packssdw %%mm5, %%mm0 \n\t" // FfAa
"packssdw %%mm4, %%mm1 \n\t" // 00Bb
"punpckhwd %%mm0, %%mm4 \n\t" // F0f0
"punpcklwd %%mm1, %%mm0 \n\t" // BAba
"movq %%mm0, %%mm1 \n\t" // BAba
"punpckldq %%mm4, %%mm3 \n\t" // f0XX
"punpckldq %%mm6, %%mm0 \n\t" // 00ba
"punpckhdq %%mm1, %%mm3 \n\t" // BAf0
"movq %%mm0, (%0, %%edi) \n\t" // 00ba
"punpckhdq %%mm4, %%mm0 \n\t" // F000
"movq %%mm3, 8(%0, %%edi) \n\t" // BAf0
"movq %%mm0, 16(%0, %%edi) \n\t" // F000
"addl $8, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1536), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 6*256;
}
static int a52_resample_3F_LFE_to_6_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"1: \n\t"
"movq 1024(%1, %%esi), %%mm0 \n\t"
"movq 3072(%1, %%esi), %%mm1 \n\t"
"movq 2048(%1, %%esi), %%mm4 \n\t"
"movq (%1, %%esi), %%mm5 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm4 \n\t"
"psubd %%mm7, %%mm5 \n\t"
"leal (%%esi, %%esi, 2), %%edi \n\t"
"packssdw %%mm4, %%mm0 \n\t" // EeAa
"packssdw %%mm5, %%mm1 \n\t" // FfBb
"movq %%mm0, %%mm2 \n\t" // EeAa
"punpcklwd %%mm1, %%mm0 \n\t" // BAba
"punpckhwd %%mm1, %%mm2 \n\t" // FEfe
"movq %%mm0, %%mm1 \n\t" // BAba
"punpckldq %%mm6, %%mm0 \n\t" // 00ba
"punpckhdq %%mm1, %%mm1 \n\t" // BABA
"movq %%mm0, (%0, %%edi) \n\t"
"punpckhdq %%mm2, %%mm0 \n\t" // FE00
"punpckldq %%mm1, %%mm2 \n\t" // BAfe
"movq %%mm2, 8(%0, %%edi) \n\t"
"movq %%mm0, 16(%0, %%edi) \n\t"
"addl $8, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1536), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 6*256;
}
static int a52_resample_2F_2R_LFE_to_6_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
// "pxor %%mm6, %%mm6 \n\t"
"1: \n\t"
"movq 1024(%1, %%esi), %%mm0 \n\t"
"movq 2048(%1, %%esi), %%mm1 \n\t"
"movq 3072(%1, %%esi), %%mm2 \n\t"
"movq 4096(%1, %%esi), %%mm3 \n\t"
"movq (%1, %%esi), %%mm5 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"psubd %%mm7, %%mm5 \n\t"
"leal (%%esi, %%esi, 2), %%edi \n\t"
"packssdw %%mm2, %%mm0 \n\t" // CcAa
"packssdw %%mm3, %%mm1 \n\t" // DdBb
"packssdw %%mm5, %%mm5 \n\t" // FfFf
"movq %%mm0, %%mm2 \n\t" // CcAa
"punpcklwd %%mm1, %%mm0 \n\t" // BAba
"punpckhwd %%mm1, %%mm2 \n\t" // DCdc
"pxor %%mm4, %%mm4 \n\t" // 0000
"punpcklwd %%mm5, %%mm4 \n\t" // F0f0
"movq %%mm0, %%mm1 \n\t" // BAba
"movq %%mm4, %%mm3 \n\t" // F0f0
"punpckldq %%mm2, %%mm0 \n\t" // dcba
"punpckhdq %%mm1, %%mm1 \n\t" // BABA
"punpckldq %%mm1, %%mm4 \n\t" // BAf0
"punpckhdq %%mm3, %%mm2 \n\t" // F0DC
"movq %%mm0, (%0, %%edi) \n\t"
"movq %%mm4, 8(%0, %%edi) \n\t"
"movq %%mm2, 16(%0, %%edi) \n\t"
"addl $8, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1536), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 6*256;
}
static int a52_resample_3F_2R_LFE_to_6_MMX(float * _f, int16_t * s16){
int32_t * f = (int32_t *) _f;
asm volatile(
"movl $-1024, %%esi \n\t"
"movq "MANGLE(magicF2W)", %%mm7 \n\t"
// "pxor %%mm6, %%mm6 \n\t"
"1: \n\t"
"movq 1024(%1, %%esi), %%mm0 \n\t"
"movq 3072(%1, %%esi), %%mm1 \n\t"
"movq 4096(%1, %%esi), %%mm2 \n\t"
"movq 5120(%1, %%esi), %%mm3 \n\t"
"movq 2048(%1, %%esi), %%mm4 \n\t"
"movq (%1, %%esi), %%mm5 \n\t"
"psubd %%mm7, %%mm0 \n\t"
"psubd %%mm7, %%mm1 \n\t"
"psubd %%mm7, %%mm2 \n\t"
"psubd %%mm7, %%mm3 \n\t"
"psubd %%mm7, %%mm4 \n\t"
"psubd %%mm7, %%mm5 \n\t"
"leal (%%esi, %%esi, 2), %%edi \n\t"
"packssdw %%mm2, %%mm0 \n\t" // CcAa
"packssdw %%mm3, %%mm1 \n\t" // DdBb
"packssdw %%mm4, %%mm4 \n\t" // EeEe
"packssdw %%mm5, %%mm5 \n\t" // FfFf
"movq %%mm0, %%mm2 \n\t" // CcAa
"punpcklwd %%mm1, %%mm0 \n\t" // BAba
"punpckhwd %%mm1, %%mm2 \n\t" // DCdc
"punpcklwd %%mm5, %%mm4 \n\t" // FEfe
"movq %%mm0, %%mm1 \n\t" // BAba
"movq %%mm4, %%mm3 \n\t" // FEfe
"punpckldq %%mm2, %%mm0 \n\t" // dcba
"punpckhdq %%mm1, %%mm1 \n\t" // BABA
"punpckldq %%mm1, %%mm4 \n\t" // BAfe
"punpckhdq %%mm3, %%mm2 \n\t" // FEDC
"movq %%mm0, (%0, %%edi) \n\t"
"movq %%mm4, 8(%0, %%edi) \n\t"
"movq %%mm2, 16(%0, %%edi) \n\t"
"addl $8, %%esi \n\t"
" jnz 1b \n\t"
"emms \n\t"
:: "r" (s16+1536), "r" (f+256)
:"%esi", "%edi", "memory"
);
return 6*256;
}
static void* a52_resample_MMX(int flags, int ch){
switch (flags) {
case A52_MONO:
if(ch==5) return a52_resample_MONO_to_5_MMX;
break;
case A52_CHANNEL:
case A52_STEREO:
case A52_DOLBY:
if(ch==2) return a52_resample_STEREO_to_2_MMX;
break;
case A52_3F:
if(ch==5) return a52_resample_3F_to_5_MMX;
break;
case A52_2F2R:
if(ch==4) return a52_resample_2F_2R_to_4_MMX;
break;
case A52_3F2R:
if(ch==5) return a52_resample_3F_2R_to_5_MMX;
break;
case A52_MONO | A52_LFE:
if(ch==6) return a52_resample_MONO_LFE_to_6_MMX;
break;
case A52_CHANNEL | A52_LFE:
case A52_STEREO | A52_LFE:
case A52_DOLBY | A52_LFE:
if(ch==6) return a52_resample_STEREO_LFE_to_6_MMX;
break;
case A52_3F | A52_LFE:
if(ch==6) return a52_resample_3F_LFE_to_6_MMX;
break;
case A52_2F2R | A52_LFE:
if(ch==6) return a52_resample_2F_2R_LFE_to_6_MMX;
break;
case A52_3F2R | A52_LFE:
if(ch==6) return a52_resample_3F_2R_LFE_to_6_MMX;
break;
}
return NULL;
}

246
libavcodec/liba52/tables.h
Unescape View File

@ -1,246 +0,0 @@
/*
* tables.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec 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.
*
* a52dec 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
static const 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 const 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 const 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 Q(x) ROUND (32768.0 * x)
#define Q0 Q (-2/3)
#define Q1 Q (0)
#define Q2 Q (2/3)
static const quantizer_t 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 quantizer_t 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 quantizer_t 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 Q (-4/5)
#define Q1 Q (-2/5)
#define Q2 Q (0)
#define Q3 Q (2/5)
#define Q4 Q (4/5)
static const quantizer_t 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 quantizer_t 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 quantizer_t 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 quantizer_t q_3[8] = {
Q (-6/7), Q (-4/7), Q (-2/7), Q (0), Q (2/7), Q (4/7), Q (6/7), 0
};
#define Q0 Q (-10/11)
#define Q1 Q (-8/11)
#define Q2 Q (-6/11)
#define Q3 Q (-4/11)
#define Q4 Q (-2/11)
#define Q5 Q (0)
#define Q6 Q (2/11)
#define Q7 Q (4/11)
#define Q8 Q (6/11)
#define Q9 Q (8/11)
#define QA Q (10/11)
static const quantizer_t 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 quantizer_t 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 quantizer_t q_5[16] = {
Q (-14/15), Q (-12/15), Q (-10/15), Q (-8/15), Q (-6/15),
Q (-4/15), Q (-2/15), Q (0), Q (2/15), Q (4/15),
Q (6/15), Q (8/15), Q (10/15), Q (12/15), Q (14/15), 0
};
#ifndef LIBA52_FIXED
static const sample_t scale_factor[25] = {
0.000030517578125,
0.0000152587890625,
0.00000762939453125,
0.000003814697265625,
0.0000019073486328125,
0.00000095367431640625,
0.000000476837158203125,
0.0000002384185791015625,
0.00000011920928955078125,
0.000000059604644775390625,
0.0000000298023223876953125,
0.00000001490116119384765625,
0.000000007450580596923828125,
0.0000000037252902984619140625,
0.00000000186264514923095703125,
0.000000000931322574615478515625,
0.0000000004656612873077392578125,
0.00000000023283064365386962890625,
0.000000000116415321826934814453125,
0.0000000000582076609134674072265625,
0.00000000002910383045673370361328125,
0.000000000014551915228366851806640625,
0.0000000000072759576141834259033203125,
0.00000000000363797880709171295166015625,
0.000000000001818989403545856475830078125
};
#endif
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
};
Write Preview
Loading…
Cancel
Save