mpegaudiodec_common.c File Reference

#include <stddef.h>
#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/thread.h"
#include "mpegaudiodata.h"
#include "mpegaudiodec_common_tablegen.h"

Go to the source code of this file.

Functions
static av_cold void	mpegaudiodec_common_init_static (void)
av_cold void	ff_mpegaudiodec_common_init_static (void)

Variables
uint16_t	ff_scale_factor_modshift [64]
static int16_t	division_tab3 [1<< 6]
static int16_t	division_tab5 [1<< 8]
static int16_t	division_tab9 [1<< 11]
int16_t *const	ff_division_tabs [4]
const uint8_t	ff_slen_table [2][16]
const uint8_t	ff_lsf_nsf_table [6][3][4]
VLC	ff_huff_vlc [16]
static VLC_TYPE	huff_vlc_tables [128+128+128+130+128+154+166+142+204+190+170+542+460+662+414][2]
VLC	ff_huff_quad_vlc [2]
static VLC_TYPE	huff_quad_vlc_tables [64+16][2]
static const uint8_t	mpa_hufflens []
static const uint8_t	mpa_huffsymbols []
static const uint8_t	mpa_huff_sizes_minus_one []
const uint8_t	ff_mpa_huff_data [32][2]
static const uint8_t	mpa_quad_codes [2][16]
static const uint8_t	mpa_quad_bits [2][16]
const uint8_t	ff_band_size_long [9][22]
const uint8_t	ff_band_size_short [9][13]
uint16_t	ff_band_index_long [9][23]
const uint8_t	ff_mpa_pretab [2][22]

Detailed Description

mpeg audio layer decoder tables.

Definition in file mpegaudiodec_common.c.

Function Documentation

mpegaudiodec_common_init_static()

static av_cold void mpegaudiodec_common_init_static ( void  )

static

Definition at line 401 of file mpegaudiodec_common.c.

Referenced by ff_mpegaudiodec_common_init_static().

ff_mpegaudiodec_common_init_static()

av_cold void ff_mpegaudiodec_common_init_static

(

void

)

Definition at line 477 of file mpegaudiodec_common.c.

Referenced by decode_init_static().

Variable Documentation

ff_scale_factor_modshift

uint16_t ff_scale_factor_modshift[64]

Definition at line 37 of file mpegaudiodec_common.c.

Referenced by l1_unscale(), l2_unscale_group(), and mpegaudiodec_common_init_static().

division_tab3

int16_t division_tab3[1<< 6]

static

Definition at line 39 of file mpegaudiodec_common.c.

division_tab5

int16_t division_tab5[1<< 8]

static

Definition at line 40 of file mpegaudiodec_common.c.

division_tab9

int16_t division_tab9[1<< 11]

static

Definition at line 41 of file mpegaudiodec_common.c.

ff_division_tabs

int16_t* const ff_division_tabs[4]

Initial value:

= {
    division_tab3, division_tab5, NULL, division_tab9
}

Definition at line 43 of file mpegaudiodec_common.c.

Referenced by mp_decode_layer2(), and mpegaudiodec_common_init_static().

ff_slen_table

const uint8_t ff_slen_table[2][16]

Initial value:

= {
    { 0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 },
    { 0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3 },
}

Definition at line 51 of file mpegaudiodec_common.c.

Referenced by mp_decode_layer3().

ff_lsf_nsf_table

const uint8_t ff_lsf_nsf_table[6][3][4]

Initial value:

= {
    { {  6,  5,  5, 5 }, {  9,  9,  9, 9 }, {  6,  9,  9, 9 } },
    { {  6,  5,  7, 3 }, {  9,  9, 12, 6 }, {  6,  9, 12, 6 } },
    { { 11, 10,  0, 0 }, { 18, 18,  0, 0 }, { 15, 18,  0, 0 } },
    { {  7,  7,  7, 0 }, { 12, 12, 12, 0 }, {  6, 15, 12, 0 } },
    { {  6,  6,  6, 3 }, { 12,  9,  9, 6 }, {  6, 12,  9, 6 } },
    { {  8,  8,  5, 0 }, { 15, 12,  9, 0 }, {  6, 18,  9, 0 } },
}

Definition at line 56 of file mpegaudiodec_common.c.

Referenced by mp_decode_layer3().

ff_huff_vlc

VLC ff_huff_vlc[16]

Definition at line 66 of file mpegaudiodec_common.c.

Referenced by huffman_decode(), and mpegaudiodec_common_init_static().

huff_vlc_tables

VLC_TYPE huff_vlc_tables[128+128+128+130+128+154+166+142+ 204+190+170+542+460+662+414][2]

static

Definition at line 68 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

ff_huff_quad_vlc

VLC ff_huff_quad_vlc[2]

Definition at line 69 of file mpegaudiodec_common.c.

Referenced by huffman_decode(), and mpegaudiodec_common_init_static().

huff_quad_vlc_tables

VLC_TYPE huff_quad_vlc_tables[64+16][2]

static

Definition at line 70 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

mpa_hufflens

const uint8_t mpa_hufflens[]

static

Definition at line 72 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

mpa_huffsymbols

const uint8_t mpa_huffsymbols[]

static

Definition at line 169 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

mpa_huff_sizes_minus_one

const uint8_t mpa_huff_sizes_minus_one[]

static

Initial value:

=
{
    3, 8, 8, 15, 15, 35, 35, 35, 63, 63, 63, 255, 255, 255, 255
}

Definition at line 309 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

ff_mpa_huff_data

const uint8_t ff_mpa_huff_data[32][2]

Definition at line 314 of file mpegaudiodec_common.c.

Referenced by huffman_decode().

mpa_quad_codes

const uint8_t mpa_quad_codes[2][16]

static

Initial value:

= {
    {  1,  5,  4,  5,  6,  5,  4,  4, 7,  3,  6,  0,  7,  2,  3,  1, },
    { 15, 14, 13, 12, 11, 10,  9,  8, 7,  6,  5,  4,  3,  2,  1,  0, },
}

Definition at line 351 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

mpa_quad_bits

const uint8_t mpa_quad_bits[2][16]

static

Initial value:

= {
    { 1, 4, 4, 5, 4, 6, 5, 6, 4, 5, 5, 6, 5, 6, 6, 6, },
    { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, },
}

Definition at line 356 of file mpegaudiodec_common.c.

Referenced by mpegaudiodec_common_init_static().

ff_band_size_long

const uint8_t ff_band_size_long[9][22]

Initial value:

= {
{ 4, 4, 4, 4, 4, 4, 6, 6, 8, 8, 10,
  12, 16, 20, 24, 28, 34, 42, 50, 54, 76, 158, }, 
{ 4, 4, 4, 4, 4, 4, 6, 6, 6, 8, 10,
  12, 16, 18, 22, 28, 34, 40, 46, 54, 54, 192, }, 
{ 4, 4, 4, 4, 4, 4, 6, 6, 8, 10, 12,
  16, 20, 24, 30, 38, 46, 56, 68, 84, 102, 26, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  18, 22, 26, 32, 38, 46, 52, 64, 70, 76, 36, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 12, 12, 12, 12, 12, 12, 16, 20, 24, 28, 32,
  40, 48, 56, 64, 76, 90, 2, 2, 2, 2, 2, }, 
}

Definition at line 361 of file mpegaudiodec_common.c.

Referenced by compute_stereo(), exponents_from_scale_factors(), and mpegaudiodec_common_init_static().

ff_band_size_short

const uint8_t ff_band_size_short[9][13]

Initial value:

= {
{ 4, 4, 4, 4, 6, 8, 10, 12, 14, 18, 22, 30, 56, }, 
{ 4, 4, 4, 4, 6, 6, 10, 12, 14, 16, 20, 26, 66, }, 
{ 4, 4, 4, 4, 6, 8, 12, 16, 20, 26, 34, 42, 12, }, 
{ 4, 4, 4, 6, 6, 8, 10, 14, 18, 26, 32, 42, 18, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 32, 44, 12, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, 
{ 8, 8, 8, 12, 16, 20, 24, 28, 36, 2, 2, 2, 26, }, 
}

Definition at line 382 of file mpegaudiodec_common.c.

Referenced by compute_stereo(), exponents_from_scale_factors(), and reorder_block().

ff_band_index_long

uint16_t ff_band_index_long[9][23]

Definition at line 394 of file mpegaudiodec_common.c.

Referenced by init_long_region(), and mpegaudiodec_common_init_static().

ff_mpa_pretab

const uint8_t ff_mpa_pretab[2][22]

Initial value:

= {
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 2, 2, 3, 3, 3, 2, 0 },
}

Definition at line 396 of file mpegaudiodec_common.c.

Referenced by exponents_from_scale_factors().