FFmpeg
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#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "avcodec.h"
#include "get_bits.h"
#include "aacps.h"
#include "aacps_tablegen.h"
#include "aacpsdata.c"
Go to the source code of this file.
Macros | |
#define | PS_BASELINE 0 |
Operate in Baseline PS mode. More... | |
#define | numQMFSlots 32 |
#define | READ_PAR_DATA(PAR, OFFSET, MASK, ERR_CONDITION) |
#define | DECAY_SLOPE 0.05f |
All-pass filter decay slope. More... | |
#define | PS_INIT_VLC_STATIC(num, size) |
#define | PS_VLC_ROW(name) { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) } |
Enumerations | |
enum | { huff_iid_df1, huff_iid_dt1, huff_iid_df0, huff_iid_dt0, huff_icc_df, huff_icc_dt, huff_ipd_df, huff_ipd_dt, huff_opd_df, huff_opd_dt } |
Functions | |
static int | read_iid_data (AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int8_t(*iid)[34], int table_idx, int e, int dt) |
\ * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ * bitstream. More... | |
static int | read_icc_data (AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int8_t(*icc)[34], int table_idx, int e, int dt) |
\ * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ * bitstream. More... | |
static int | read_ipdopd_data (AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int8_t(*ipdopd)[34], int table_idx, int e, int dt) |
\ * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ * bitstream. More... | |
static int | ps_read_extension_data (GetBitContext *gb, PSContext *ps, int ps_extension_id) |
static void | ipdopd_reset (int8_t *ipd_hist, int8_t *opd_hist) |
int | ff_ps_read_data (AVCodecContext *avctx, GetBitContext *gb_host, PSContext *ps, int bits_left) |
static void | hybrid2_re (float(*in)[2], float(*out)[32][2], const float filter[8], int len, int reverse) |
Split one subband into 2 subsubbands with a symmetric real filter. More... | |
static void | hybrid6_cx (PSDSPContext *dsp, float(*in)[2], float(*out)[32][2], TABLE_CONST float(*filter)[8][2], int len) |
Split one subband into 6 subsubbands with a complex filter. More... | |
static void | hybrid4_8_12_cx (PSDSPContext *dsp, float(*in)[2], float(*out)[32][2], TABLE_CONST float(*filter)[8][2], int N, int len) |
static void | hybrid_analysis (PSDSPContext *dsp, float out[91][32][2], float in[5][44][2], float L[2][38][64], int is34, int len) |
static void | hybrid_synthesis (PSDSPContext *dsp, float out[2][38][64], float 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 (float 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 (float par[PS_MAX_NR_IIDICC]) |
static void | decorrelation (PSContext *ps, float(*out)[32][2], const float(*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, float(*l)[32][2], float(*r)[32][2], int is34) |
int | ff_ps_apply (AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top) |
av_cold void | ff_ps_init (void) |
av_cold void | ff_ps_ctx_init (PSContext *ps) |
Variables | |
static const int8_t | num_env_tab [2][4] |
static const int8_t | nr_iidicc_par_tab [] |
static const int8_t | nr_iidopd_par_tab [] |
static const int | huff_iid [] |
static VLC | vlc_ps [10] |
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... | |
#define PS_BASELINE 0 |
Operate in Baseline PS mode.
Baseline implies 10 or 20 stereo bands, mixing mode A, and no ipd/opd
Definition at line 32 of file aacps.c.
Referenced by ff_ps_read_data(), and stereo_processing().
#define numQMFSlots 32 |
Definition at line 36 of file aacps.c.
Referenced by decorrelation(), and ff_ps_read_data().
#define DECAY_SLOPE 0.05f |
#define PS_INIT_VLC_STATIC | ( | num, | |
size | |||
) |
Definition at line 930 of file aacps.c.
Referenced by ff_ps_init().
#define PS_VLC_ROW | ( | name | ) | { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) } |
Definition at line 936 of file aacps.c.
Referenced by ff_ps_init().
anonymous enum |
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\ * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ * bitstream.
\ * \ *
avctx | contains the current codec context \ * |
gb | pointer to the input bitstream \ * |
ps | pointer to the Parametric Stereo context \ * |
iid | pointer to the parameter to be read \ * |
e | envelope to decode \ * |
dt | 1: time delta-coded, 0: frequency delta-coded \ |
Definition at line 117 of file aacps.c.
Referenced by ff_ps_read_data().
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\ * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ * bitstream.
\ * \ *
avctx | contains the current codec context \ * |
gb | pointer to the input bitstream \ * |
ps | pointer to the Parametric Stereo context \ * |
icc | pointer to the parameter to be read \ * |
e | envelope to decode \ * |
dt | 1: time delta-coded, 0: frequency delta-coded \ |
Definition at line 118 of file aacps.c.
Referenced by ff_ps_read_data().
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\ * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ * bitstream.
\ * \ *
avctx | contains the current codec context \ * |
gb | pointer to the input bitstream \ * |
ps | pointer to the Parametric Stereo context \ * |
ipdopd | pointer to the parameter to be read \ * |
e | envelope to decode \ * |
dt | 1: time delta-coded, 0: frequency delta-coded \ |
Definition at line 119 of file aacps.c.
Referenced by ps_read_extension_data().
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Definition at line 121 of file aacps.c.
Referenced by ff_ps_read_data().
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Definition at line 142 of file aacps.c.
Referenced by stereo_processing().
int ff_ps_read_data | ( | AVCodecContext * | avctx, |
GetBitContext * | gb_host, | ||
PSContext * | ps, | ||
int | bits_left | ||
) |
Definition at line 151 of file aacps.c.
Referenced by read_sbr_extension().
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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 305 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 325 of file aacps.c.
Referenced by hybrid_analysis().
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Definition at line 349 of file aacps.c.
Referenced by hybrid_analysis().
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Definition at line 360 of file aacps.c.
Referenced by ff_ps_apply().
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Definition at line 390 of file aacps.c.
Referenced by ff_ps_apply().
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Definition at line 486 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 592 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 714 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 733 of file aacps.c.
Referenced by stereo_processing().
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Definition at line 752 of file aacps.c.
Referenced by ff_ps_apply().
int ff_ps_apply | ( | AVCodecContext * | avctx, |
PSContext * | ps, | ||
float | L[2][38][64], | ||
float | R[2][38][64], | ||
int | top | ||
) |
Definition at line 909 of file aacps.c.
Referenced by ff_sbr_apply().
Definition at line 939 of file aacps.c.
Referenced by ff_aac_sbr_init().
Definition at line 971 of file aacps.c.
Referenced by ff_aac_sbr_ctx_init().
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Definition at line 38 of file aacps.c.
Referenced by ff_ps_read_data().
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Definition at line 43 of file aacps.c.
Referenced by ff_ps_read_data().
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Definition at line 47 of file aacps.c.
Referenced by ff_ps_read_data().
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Definition at line 64 of file aacps.c.
Referenced by ff_ps_read_data().
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