FFmpeg
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#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem_internal.h"
#include "aacps.h"
#include "libavutil/internal.h"
#include "aacps_tablegen.h"
Go to the source code of this file.
Macros | |
#define | DECAY_SLOPE Q30(0.05f) |
All-pass filter decay slope. More... | |
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static void | ipdopd_reset (int8_t *ipd_hist, int8_t *opd_hist) |
static void | hybrid2_re (INTFLOAT(*in)[2], INTFLOAT(*out)[32][2], const INTFLOAT filter[7], int len, int reverse) |
Split one subband into 2 subsubbands with a symmetric real filter. More... | |
static void | hybrid6_cx (PSDSPContext *dsp, INTFLOAT(*in)[2], INTFLOAT(*out)[32][2], TABLE_CONST INTFLOAT(*filter)[8][2], int len) |
Split one subband into 6 subsubbands with a complex filter. More... | |
static void | hybrid4_8_12_cx (PSDSPContext *dsp, INTFLOAT(*in)[2], INTFLOAT(*out)[32][2], TABLE_CONST INTFLOAT(*filter)[8][2], int N, int len) |
static void | hybrid_analysis (PSDSPContext *dsp, INTFLOAT out[91][32][2], INTFLOAT in[5][44][2], INTFLOAT L[2][38][64], int is34, int len) |
static void | hybrid_synthesis (PSDSPContext *dsp, INTFLOAT out[2][38][64], INTFLOAT in[91][32][2], int is34, int len) |
static void | map_idx_10_to_20 (int8_t *par_mapped, const int8_t *par, int full) |
Table 8.46. More... | |
static void | map_idx_34_to_20 (int8_t *par_mapped, const int8_t *par, int full) |
static void | map_val_34_to_20 (INTFLOAT par[PS_MAX_NR_IIDICC]) |
static void | map_idx_10_to_34 (int8_t *par_mapped, const int8_t *par, int full) |
static void | map_idx_20_to_34 (int8_t *par_mapped, const int8_t *par, int full) |
static void | map_val_20_to_34 (INTFLOAT par[PS_MAX_NR_IIDICC]) |
static void | decorrelation (PSContext *ps, INTFLOAT(*out)[32][2], const INTFLOAT(*s)[32][2], int is34) |
static void | remap34 (int8_t(**p_par_mapped)[PS_MAX_NR_IIDICC], int8_t(*par)[PS_MAX_NR_IIDICC], int num_par, int num_env, int full) |
static void | remap20 (int8_t(**p_par_mapped)[PS_MAX_NR_IIDICC], int8_t(*par)[PS_MAX_NR_IIDICC], int num_par, int num_env, int full) |
static void | stereo_processing (PSContext *ps, INTFLOAT(*l)[32][2], INTFLOAT(*r)[32][2], int is34) |
int AAC_RENAME() | ff_ps_apply (PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top) |
av_cold void AAC_RENAME() | ff_ps_init (void) |
Variables | |
static const INTFLOAT | g1_Q2 [] |
static const int | NR_PAR_BANDS [] = { 20, 34 } |
Number of frequency bands that can be addressed by the parameter index, b(k) More... | |
static const int | NR_IPDOPD_BANDS [] = { 11, 17 } |
static const int | NR_BANDS [] = { 71, 91 } |
Number of frequency bands that can be addressed by the sub subband index, k. More... | |
static const int | DECAY_CUTOFF [] = { 10, 32 } |
Start frequency band for the all-pass filter decay slope. More... | |
static const int | NR_ALLPASS_BANDS [] = { 30, 50 } |
Number of all-pass filer bands. More... | |
static const int | SHORT_DELAY_BAND [] = { 42, 62 } |
First stereo band using the short one sample delay. More... | |
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Definition at line 42 of file aacps.c.
Referenced by stereo_processing().
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Split one subband into 2 subsubbands with a symmetric real filter.
The filter must have its non-center even coefficients equal to zero.
Definition at line 53 of file aacps.c.
Referenced by hybrid_analysis().
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Split one subband into 6 subsubbands with a complex filter.
Definition at line 80 of file aacps.c.
Referenced by hybrid_analysis().
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Definition at line 104 of file aacps.c.
Referenced by hybrid_analysis().
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Definition at line 115 of file aacps.c.
Referenced by ff_ps_apply().
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Definition at line 145 of file aacps.c.
Referenced by ff_ps_apply().
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Definition at line 241 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 362 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 519 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 538 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 557 of file aacps.c.
Referenced by ff_ps_apply().
int AAC_RENAME() ff_ps_apply | ( | PSContext * | ps, |
INTFLOAT | L[2][38][64], | ||
INTFLOAT | R[2][38][64], | ||
int | top | ||
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Definition at line 719 of file aacps.c.
Referenced by ff_aac_sbr_apply().
av_cold void AAC_RENAME() ff_ps_init | ( | void | ) |
Definition at line 740 of file aacps.c.
Referenced by ff_aac_sbr_init().
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Number of frequency bands that can be addressed by the parameter index, b(k)
Definition at line 189 of file aacps.c.
Referenced by decorrelation(), and stereo_processing().
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Definition at line 190 of file aacps.c.
Referenced by stereo_processing().
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Number of frequency bands that can be addressed by the sub subband index, k.
Definition at line 192 of file aacps.c.
Referenced by decorrelation(), ff_ps_apply(), and stereo_processing().
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Start frequency band for the all-pass filter decay slope.
Definition at line 194 of file aacps.c.
Referenced by decorrelation().
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Number of all-pass filer bands.
Definition at line 196 of file aacps.c.
Referenced by decorrelation(), and ff_ps_apply().
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First stereo band using the short one sample delay.
Definition at line 198 of file aacps.c.
Referenced by decorrelation().