FFmpeg
|
AAC coefficients encoder. More...
#include "libavutil/libm.h"
#include <float.h>
#include "libavutil/mathematics.h"
#include "mathops.h"
#include "avcodec.h"
#include "put_bits.h"
#include "aac.h"
#include "aacenc.h"
#include "aactab.h"
#include "aacenctab.h"
#include "aacenc_utils.h"
#include "aacenc_quantization.h"
#include "aacenc_is.h"
#include "aacenc_tns.h"
#include "aacenc_ltp.h"
#include "aacenc_pred.h"
#include "libavcodec/aaccoder_twoloop.h"
#include "libavcodec/aaccoder_trellis.h"
Go to the source code of this file.
Data Structures | |
struct | BandCodingPath |
structure used in optimal codebook search More... | |
struct | TrellisPath |
Macros | |
#define | NOISE_SPREAD_THRESHOLD 0.9f |
#define | NOISE_LAMBDA_REPLACE 1.948f |
#define | TRELLIS_STAGES 121 |
#define | TRELLIS_STATES (SCALE_MAX_DIFF+1) |
Functions | |
static void | encode_window_bands_info (AACEncContext *s, SingleChannelElement *sce, int win, int group_len, const float lambda) |
Encode band info for single window group bands. More... | |
static void | set_special_band_scalefactors (AACEncContext *s, SingleChannelElement *sce) |
static void | search_for_quantizers_anmr (AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce, const float lambda) |
static void | search_for_quantizers_fast (AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce, const float lambda) |
static void | search_for_pns (AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce) |
static void | mark_pns (AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce) |
static void | search_for_ms (AACEncContext *s, ChannelElement *cpe) |
Variables | |
AACCoefficientsEncoder | ff_aac_coders [AAC_CODER_NB] |
AAC coefficients encoder.
Definition in file aaccoder.c.
#define NOISE_SPREAD_THRESHOLD 0.9f |
Definition at line 57 of file aaccoder.c.
Referenced by mark_pns(), and search_for_pns().
#define NOISE_LAMBDA_REPLACE 1.948f |
Definition at line 61 of file aaccoder.c.
Referenced by search_for_pns().
#define TRELLIS_STAGES 121 |
Definition at line 193 of file aaccoder.c.
Referenced by search_for_quantizers_anmr().
#define TRELLIS_STATES (SCALE_MAX_DIFF+1) |
Definition at line 194 of file aaccoder.c.
Referenced by search_for_quantizers_anmr().
|
static |
Encode band info for single window group bands.
Definition at line 77 of file aaccoder.c.
|
static |
Definition at line 196 of file aaccoder.c.
|
static |
Definition at line 235 of file aaccoder.c.
|
static |
Definition at line 395 of file aaccoder.c.
|
static |
Keep this in sync with twoloop's cutoff selection
Definition at line 543 of file aaccoder.c.
|
static |
Keep this in sync with twoloop's cutoff selection
Definition at line 685 of file aaccoder.c.
|
static |
Scout out next nonzero bands
Definition at line 756 of file aaccoder.c.
AACCoefficientsEncoder ff_aac_coders[AAC_CODER_NB] |
Definition at line 897 of file aaccoder.c.
Referenced by aac_encode_init().