FFmpeg
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MPEG Audio decoder. More...
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/libm.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.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 | 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) |
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_template.c.
#define BACKSTEP_SIZE 512 |
Definition at line 46 of file mpegaudiodec_template.c.
Referenced by mp_decode_frame().
#define EXTRABYTES 24 |
Definition at line 47 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
#define LAST_BUF_SIZE 2 * BACKSTEP_SIZE + EXTRABYTES |
Definition at line 48 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
#define HEADER_SIZE 4 |
Definition at line 92 of file mpegaudiodec_template.c.
Referenced by decode_frame(), and mp_decode_frame().
#define SCALE_GEN | ( | v | ) | { FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) } |
Definition at line 132 of file mpegaudiodec_template.c.
#define C3 FIXHR(0.86602540378443864676/2) |
Definition at line 452 of file mpegaudiodec_template.c.
Referenced by imdct12().
#define C4 FIXHR(0.70710678118654752439/2) |
Definition at line 453 of file mpegaudiodec_template.c.
Referenced by imdct12(), and xbr_filter().
#define C5 FIXHR(0.51763809020504152469/2) |
Definition at line 454 of file mpegaudiodec_template.c.
Referenced by imdct12().
#define C6 FIXHR(1.93185165257813657349/4) |
Definition at line 455 of file mpegaudiodec_template.c.
Referenced by imdct12().
#define SPLIT | ( | dst, | |
sf, | |||
n | |||
) |
Definition at line 753 of file mpegaudiodec_template.c.
Referenced by avfilter_register_all(), and lsf_sf_expand().
#define READ_FLIP_SIGN | ( | dst, | |
src | |||
) |
Definition at line 851 of file mpegaudiodec_template.c.
Referenced by huffman_decode().
#define ISQRT2 FIXR(0.70710678118654752440) |
Definition at line 1040 of file mpegaudiodec_template.c.
Referenced by compute_stereo().
#define AA | ( | j | ) |
Definition at line 1189 of file mpegaudiodec_template.c.
Referenced by compute_antialias().
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Convert region offsets to region sizes and truncate size to big_values.
Definition at line 145 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 156 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 174 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 184 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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inlinestatic |
Definition at line 211 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer1(), and mp_decode_layer2().
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inlinestatic |
Definition at line 225 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer2().
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inlinestatic |
Definition at line 241 of file mpegaudiodec_template.c.
Referenced by huffman_decode().
Definition at line 260 of file mpegaudiodec_template.c.
Referenced by decode_init().
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Definition at line 419 of file mpegaudiodec_template.c.
Definition at line 459 of file mpegaudiodec_template.c.
Referenced by compute_imdct().
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Definition at line 501 of file mpegaudiodec_template.c.
Referenced by mp_decode_frame().
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Definition at line 566 of file mpegaudiodec_template.c.
Referenced by mp_decode_frame().
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Definition at line 773 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 782 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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inlinestatic |
Definition at line 820 of file mpegaudiodec_template.c.
Referenced by huffman_decode().
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Definition at line 826 of file mpegaudiodec_template.c.
Referenced by huffman_decode().
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Definition at line 856 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 1007 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 1042 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 1198 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 1229 of file mpegaudiodec_template.c.
Referenced by mp_decode_layer3().
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Definition at line 1309 of file mpegaudiodec_template.c.
Referenced by mp_decode_frame().
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Definition at line 1563 of file mpegaudiodec_template.c.
Referenced by decode_frame().
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Definition at line 1651 of file mpegaudiodec_template.c.
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Definition at line 1720 of file mpegaudiodec_template.c.
Referenced by flush().
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Definition at line 1728 of file mpegaudiodec_template.c.
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Definition at line 98 of file mpegaudiodec_template.c.
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Definition at line 102 of file mpegaudiodec_template.c.
Referenced by decode_init_static().
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Definition at line 103 of file mpegaudiodec_template.c.
Referenced by decode_init_static().
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Definition at line 107 of file mpegaudiodec_template.c.
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Definition at line 108 of file mpegaudiodec_template.c.
Referenced by decode_init_static().
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Definition at line 109 of file mpegaudiodec_template.c.
Referenced by decode_init_static().
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Definition at line 111 of file mpegaudiodec_template.c.
Referenced by decode_init_static(), and init_long_region().
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Definition at line 114 of file mpegaudiodec_template.c.
Referenced by compute_stereo(), and decode_init_static().
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Definition at line 115 of file mpegaudiodec_template.c.
Referenced by compute_stereo(), and decode_init_static().
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Definition at line 116 of file mpegaudiodec_template.c.
Referenced by decode_init_static().
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Definition at line 118 of file mpegaudiodec_template.c.
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Definition at line 119 of file mpegaudiodec_template.c.
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Definition at line 120 of file mpegaudiodec_template.c.
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Definition at line 122 of file mpegaudiodec_template.c.
Referenced by decode_init_static(), and mp_decode_layer2().
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Definition at line 127 of file mpegaudiodec_template.c.
Referenced by decode_init_static(), l1_unscale(), and l2_unscale_group().
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Definition at line 129 of file mpegaudiodec_template.c.
Referenced by decode_init_static(), and l1_unscale().
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Definition at line 135 of file mpegaudiodec_template.c.
Referenced by l2_unscale_group().