MPEG Audio decoder. More...
#include "libavutil/audioconvert.h"
#include "avcodec.h"
#include "internal.h"
#include "get_bits.h"
#include "mathops.h"
#include "mpegaudiodsp.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 | 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 1176 of file mpegaudiodec.c.
Referenced by compute_antialias().
#define BACKSTEP_SIZE 512 |
Definition at line 42 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
#define C3 FIXHR(0.86602540378443864676/2) |
Definition at line 449 of file mpegaudiodec.c.
Referenced by imdct12().
#define C4 FIXHR(0.70710678118654752439/2) |
Definition at line 450 of file mpegaudiodec.c.
Referenced by idct_col(), and imdct12().
#define C5 FIXHR(0.51763809020504152469/2) |
Definition at line 451 of file mpegaudiodec.c.
Referenced by imdct12().
#define C6 FIXHR(1.93185165257813657349/4) |
Definition at line 452 of file mpegaudiodec.c.
Referenced by imdct12().
#define EXTRABYTES 24 |
Definition at line 43 of file mpegaudiodec.c.
#define FIXHR | ( | a | ) | ((int)((a) * (1LL<<32) + 0.5)) |
Definition at line 101 of file mpegaudiodec.c.
Referenced by decode_init_static().
#define FIXR | ( | a | ) | ((int)((a) * FRAC_ONE + 0.5)) |
Definition at line 100 of file mpegaudiodec.c.
Referenced by decode_init_static().
#define FIXR_OLD | ( | a | ) | ((int)((a) * FRAC_ONE + 0.5)) |
Definition at line 99 of file mpegaudiodec.c.
#define HEADER_SIZE 4 |
Definition at line 110 of file mpegaudiodec.c.
Referenced by decode_frame(), and mp_decode_frame().
#define ISQRT2 FIXR(0.70710678118654752440) |
Definition at line 1042 of file mpegaudiodec.c.
Referenced by compute_stereo().
#define LAST_BUF_SIZE 2 * BACKSTEP_SIZE + EXTRABYTES |
Definition at line 44 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
#define MULH3 | ( | x, | |
y, | |||
s | |||
) | MULH((s)*(x), y) |
Definition at line 102 of file mpegaudiodec.c.
Referenced by compute_imdct(), and imdct12().
#define MULLx | ( | x, | |
y, | |||
s | |||
) | MULL(x,y,s) |
Definition at line 103 of file mpegaudiodec.c.
Referenced by compute_stereo(), and decode_init_static().
#define OUT_FMT AV_SAMPLE_FMT_S16 |
Definition at line 105 of file mpegaudiodec.c.
Referenced by decode_init().
#define READ_FLIP_SIGN | ( | dst, | |
src | |||
) |
Definition at line 848 of file mpegaudiodec.c.
Referenced by huffman_decode().
#define RENAME | ( | a | ) | a ## _fixed |
Definition at line 104 of file mpegaudiodec.c.
Referenced by bgr24ToUV_TMPL(), bgr24ToY_TMPL(), compute_imdct(), decode_init_static(), huffman_decode(), mp_decode_frame(), postProcess_TMPL(), rgb24ToUV_TMPL(), rgb24ToY_TMPL(), rgb2rgb_init_TMPL(), sws_init_swScale_TMPL(), uyvytoyuv420_TMPL(), uyvytoyuv422_TMPL(), yuv422ptouyvy_TMPL(), yuv422ptoyuy2_TMPL(), yuyvtoyuv420_TMPL(), yuyvtoyuv422_TMPL(), yv12touyvy_TMPL(), and yv12toyuy2_TMPL().
#define SCALE_GEN | ( | v | ) | { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) } |
Definition at line 150 of file mpegaudiodec.c.
Definition at line 97 of file mpegaudiodec.c.
Referenced by imdct12().
#define SPLIT | ( | dst, | |
sf, | |||
n | |||
) |
Definition at line 750 of file mpegaudiodec.c.
Referenced by avfilter_register_all(), and lsf_sf_expand().
typedef struct GranuleDef GranuleDef |
typedef struct MPADecodeContext MPADecodeContext |
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Definition at line 1185 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 1215 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 1044 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 1632 of file mpegaudiodec.c.
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Definition at line 423 of file mpegaudiodec.c.
Definition at line 271 of file mpegaudiodec.c.
Referenced by decode_init().
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Definition at line 779 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 198 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 189 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 174 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Convert region offsets to region sizes and truncate size to big_values.
Definition at line 163 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 1691 of file mpegaudiodec.c.
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inlinestatic |
Definition at line 817 of file mpegaudiodec.c.
Referenced by huffman_decode().
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Definition at line 853 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
Definition at line 456 of file mpegaudiodec.c.
Referenced by compute_imdct().
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inlinestatic |
Definition at line 225 of file mpegaudiodec.c.
Referenced by mp_decode_layer1(), and mp_decode_layer2().
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Definition at line 239 of file mpegaudiodec.c.
Referenced by mp_decode_layer2().
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Definition at line 255 of file mpegaudiodec.c.
Referenced by huffman_decode().
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Definition at line 770 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 1549 of file mpegaudiodec.c.
Referenced by decode_frame().
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Definition at line 498 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
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Definition at line 563 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
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Definition at line 1295 of file mpegaudiodec.c.
Referenced by mp_decode_frame().
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Definition at line 1009 of file mpegaudiodec.c.
Referenced by mp_decode_layer3().
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Definition at line 823 of file mpegaudiodec.c.
Referenced by huffman_decode().
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Definition at line 129 of file mpegaudiodec.c.
Referenced by decode_init_static(), and ff_init_long_region().
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Definition at line 134 of file mpegaudiodec.c.
Referenced by decode_init_static().
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Definition at line 136 of file mpegaudiodec.c.
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Definition at line 137 of file mpegaudiodec.c.
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Definition at line 138 of file mpegaudiodec.c.
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Definition at line 140 of file mpegaudiodec.c.
Referenced by decode_init_static(), and mp_decode_layer2().
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Definition at line 125 of file mpegaudiodec.c.
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Definition at line 126 of file mpegaudiodec.c.
Referenced by decode_init_static().
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Definition at line 127 of file mpegaudiodec.c.
Referenced by decode_init_static().
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Definition at line 116 of file mpegaudiodec.c.
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Definition at line 120 of file mpegaudiodec.c.
Referenced by decode_init_static().
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Definition at line 121 of file mpegaudiodec.c.
Referenced by decode_init_static().
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Definition at line 132 of file mpegaudiodec.c.
Referenced by compute_stereo(), and decode_init_static().
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Definition at line 133 of file mpegaudiodec.c.
Referenced by compute_stereo(), and decode_init_static().
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Definition at line 145 of file mpegaudiodec.c.
Referenced by decode_init_static(), l1_unscale(), and l2_unscale_group().
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Definition at line 147 of file mpegaudiodec.c.
Referenced by decode_init_static(), encode_frame(), l1_unscale(), and MPA_encode_init().
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Definition at line 153 of file mpegaudiodec.c.
Referenced by l2_unscale_group().