MPEG Audio decoder. More...
#include "libavutil/channel_layout.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"
#include "mathops.h"
#include "mpegaudiodsp.h"
#include "dsputil.h"
#include "mpegaudio.h"
#include "mpegaudiodecheader.h"
#include "mpegaudiodata.h"
#include "mpegaudiodectab.h"
#include "mpegaudio_tablegen.h"
Go to the source code of this file.
Data Structures | |
struct | GranuleDef |
struct | MPADecodeContext |
Macros | |
#define | BACKSTEP_SIZE 512 |
#define | EXTRABYTES 24 |
#define | LAST_BUF_SIZE 2 * BACKSTEP_SIZE + EXTRABYTES |
#define | SHR(a, b) ((a)>>(b)) |
#define | FIXR_OLD(a) ((int)((a) * FRAC_ONE + 0.5)) |
#define | FIXR(a) ((int)((a) * FRAC_ONE + 0.5)) |
#define | FIXHR(a) ((int)((a) * (1LL<<32) + 0.5)) |
#define | MULH3(x, y, s) MULH((s)*(x), y) |
#define | MULLx(x, y, s) MULL(x,y,s) |
#define | RENAME(a) a ## _fixed |
#define | OUT_FMT AV_SAMPLE_FMT_S16 |
#define | OUT_FMT_P AV_SAMPLE_FMT_S16P |
#define | HEADER_SIZE 4 |
#define | SCALE_GEN(v) { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) } |
#define | C3 FIXHR(0.86602540378443864676/2) |
#define | C4 FIXHR(0.70710678118654752439/2) |
#define | C5 FIXHR(0.51763809020504152469/2) |
#define | C6 FIXHR(1.93185165257813657349/4) |
#define | SPLIT(dst, sf, n) |
#define | READ_FLIP_SIGN(dst, src) |
#define | ISQRT2 FIXR(0.70710678118654752440) |
#define | AA(j) |
Typedefs | |
typedef struct GranuleDef | GranuleDef |
typedef struct MPADecodeContext | MPADecodeContext |
Variables | |
static VLC | huff_vlc [16] |
static VLC_TYPE | huff_vlc_tables [0+128+128+128+130+128+154+166+142+204+190+170+542+460+662+414][2] |
static const int | huff_vlc_tables_sizes [16] |
static VLC | huff_quad_vlc [2] |
static VLC_TYPE | huff_quad_vlc_tables [128+16][2] |
static const int | huff_quad_vlc_tables_sizes [2] = { 128, 16 } |
static uint16_t | band_index_long [9][23] |
static INTFLOAT | is_table [2][16] |
static INTFLOAT | is_table_lsf [2][2][16] |
static INTFLOAT | csa_table [8][4] |
static int16_t | division_tab3 [1<< 6] |
static int16_t | division_tab5 [1<< 8] |
static int16_t | division_tab9 [1<< 11] |
static int16_t *const | division_tabs [4] |
static uint16_t | scale_factor_modshift [64] |
static int32_t | scale_factor_mult [15][3] |
static const int32_t | scale_factor_mult2 [3][3] |
MPEG Audio decoder.
Definition in file mpegaudiodec.c.
#define AA | ( | j) |
Definition at line 1182 of file mpegaudiodec.c.
Referenced by compute_antialias().
#define BACKSTEP_SIZE 512 |
Definition at line 43 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
#define C3 FIXHR(0.86602540378443864676/2) |
Definition at line 456 of file mpegaudiodec.c.
Referenced by imdct12().
#define C4 FIXHR(0.70710678118654752439/2) |
Definition at line 457 of file mpegaudiodec.c.
Referenced by imdct12().
#define C5 FIXHR(0.51763809020504152469/2) |
Definition at line 458 of file mpegaudiodec.c.
Referenced by imdct12().
#define C6 FIXHR(1.93185165257813657349/4) |
Definition at line 459 of file mpegaudiodec.c.
Referenced by imdct12().
#define EXTRABYTES 24 |
Definition at line 44 of file mpegaudiodec.c.
Definition at line 104 of file mpegaudiodec.c.
Referenced by decode_init_static().
Definition at line 103 of file mpegaudiodec.c.
Referenced by decode_init_static().
Definition at line 102 of file mpegaudiodec.c.
#define HEADER_SIZE 4 |
Definition at line 114 of file mpegaudiodec.c.
Referenced by decode_frame(), and mp_decode_frame().
#define ISQRT2 FIXR(0.70710678118654752440) |
Definition at line 1044 of file mpegaudiodec.c.
Referenced by compute_stereo().
#define LAST_BUF_SIZE 2 * BACKSTEP_SIZE + EXTRABYTES |
Definition at line 45 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
#define MULH3 | ( | x, | |
y, | |||
s | |||
) | MULH((s)*(x), y) |
Definition at line 105 of file mpegaudiodec.c.
Referenced by compute_imdct(), and imdct12().
#define MULLx | ( | x, | |
y, | |||
s | |||
) | MULL(x,y,s) |
Definition at line 106 of file mpegaudiodec.c.
Referenced by compute_stereo(), and decode_init_static().
#define OUT_FMT AV_SAMPLE_FMT_S16 |
Definition at line 108 of file mpegaudiodec.c.
Referenced by decode_init().
#define OUT_FMT_P AV_SAMPLE_FMT_S16P |
Definition at line 109 of file mpegaudiodec.c.
Referenced by decode_init(), and mp_decode_frame().
#define READ_FLIP_SIGN | ( | dst, | |
src | |||
) |
Definition at line 855 of file mpegaudiodec.c.
Referenced by huffman_decode().
Definition at line 107 of file mpegaudiodec.c.
Referenced by compute_imdct(), decode_init_static(), huffman_decode(), mp_decode_frame(), rgb2rgb_init(), sws_init_swScale(), uyvytoyuv420(), uyvytoyuv422(), yuv422ptouyvy(), yuv422ptoyuy2(), yuyvtoyuv420(), yuyvtoyuv422(), yv12touyvy(), and yv12toyuy2().
#define SCALE_GEN | ( | v) | { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) } |
Definition at line 154 of file mpegaudiodec.c.
Definition at line 100 of file mpegaudiodec.c.
Referenced by imdct12().
#define SPLIT | ( | dst, | |
sf, | |||
n | |||
) |
Definition at line 757 of file mpegaudiodec.c.
Referenced by avfilter_register_all(), and lsf_sf_expand().
typedef struct GranuleDef GranuleDef |
typedef struct MPADecodeContext MPADecodeContext |
|
static |
Definition at line 1191 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 1221 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 1046 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 1645 of file mpegaudiodec.c.
|
static |
Definition at line 425 of file mpegaudiodec.c.
Definition at line 276 of file mpegaudiodec.c.
Referenced by decode_init().
|
static |
Definition at line 786 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 205 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 196 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 178 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Convert region offsets to region sizes and truncate size to big_values.
Definition at line 167 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 1708 of file mpegaudiodec.c.
|
inlinestatic |
Definition at line 824 of file mpegaudiodec.c.
Referenced by huffman_decode().
|
static |
Definition at line 860 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
Definition at line 463 of file mpegaudiodec.c.
Referenced by compute_imdct().
|
inlinestatic |
Definition at line 230 of file mpegaudiodec.c.
Referenced by mp_decode_layer1(), and mp_decode_layer2().
|
inlinestatic |
Definition at line 244 of file mpegaudiodec.c.
Referenced by mp_decode_layer2().
|
inlinestatic |
Definition at line 260 of file mpegaudiodec.c.
Referenced by huffman_decode().
|
static |
Definition at line 777 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 1556 of file mpegaudiodec.c.
Referenced by decode_frame().
|
static |
Definition at line 505 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
|
static |
Definition at line 570 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
|
static |
Definition at line 1301 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
|
static |
Definition at line 1702 of file mpegaudiodec.c.
Referenced by flush().
|
static |
Definition at line 1011 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
|
static |
Definition at line 830 of file mpegaudiodec.c.
Referenced by huffman_decode().
|
static |
Definition at line 133 of file mpegaudiodec.c.
Referenced by decode_init_static(), and ff_init_long_region().
|
static |
Definition at line 138 of file mpegaudiodec.c.
Referenced by decode_init_static().
|
static |
Definition at line 140 of file mpegaudiodec.c.
|
static |
Definition at line 141 of file mpegaudiodec.c.
|
static |
Definition at line 142 of file mpegaudiodec.c.
|
static |
Definition at line 144 of file mpegaudiodec.c.
Referenced by decode_init_static(), and mp_decode_layer2().
|
static |
Definition at line 129 of file mpegaudiodec.c.
|
static |
Definition at line 130 of file mpegaudiodec.c.
Referenced by decode_init_static().
|
static |
Definition at line 131 of file mpegaudiodec.c.
Referenced by decode_init_static().
|
static |
Definition at line 120 of file mpegaudiodec.c.
|
static |
Definition at line 124 of file mpegaudiodec.c.
Referenced by decode_init_static().
|
static |
Definition at line 125 of file mpegaudiodec.c.
Referenced by decode_init_static().
|
static |
Definition at line 136 of file mpegaudiodec.c.
Referenced by compute_stereo(), and decode_init_static().
|
static |
Definition at line 137 of file mpegaudiodec.c.
Referenced by compute_stereo(), and decode_init_static().
|
static |
Definition at line 149 of file mpegaudiodec.c.
Referenced by decode_init_static(), l1_unscale(), and l2_unscale_group().
|
static |
Definition at line 151 of file mpegaudiodec.c.
Referenced by decode_init_static(), encode_frame(), l1_unscale(), and MPA_encode_init().
|
static |
Definition at line 157 of file mpegaudiodec.c.
Referenced by l2_unscale_group().