g728dec.c File Reference

#include "avcodec.h"
#include "celp_filters.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "g728data.h"
#include "lpc_functions.h"
#include "ra288.h"
#include "libavutil/float_dsp.h"
#include "libavutil/mem.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "g728_template.c"

Go to the source code of this file.

Data Structures
struct	G728Context

Macros
#define	MAX_BACKWARD_FILTER_ORDER   LPC
#define	MAX_BACKWARD_FILTER_LEN   NFRSZ
#define	MAX_BACKWARD_FILTER_NONREC   NONR
#define	ATTEN   0.75f
#define	LPCW   10 /* Perceptual weighting filter order */
#define	GOFF   32.0f /* Log-gain offset value */
#define	SAMPLES_PER_FRAME   20

Functions
static av_cold void	g728_init_static_data (void)
static av_cold int	g728_decode_init (AVCodecContext *avctx)
static av_cold int	g728_decode_close (AVCodecContext *avctx)
static int	hybrid_window (AVFloatDSPContext *fdsp, int order, int n, int non_rec, float *out, const float *hist, float *out2, const float *window)
static void	decode_frame (G728Context *s, GetBitContext *gb, float *dst)
static int	g728_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)

Variables
static float	g728_gq_db [8]
static float	g728_y_db [128]
static float	g728_wnr_r [FFALIGN(NSBSZ, 16)]
static float	g728_wnrg_r [FFALIGN(NSBGSZ, 16)]
static float	g728_facv_f [FFALIGN(LPC, 16)]
const FFCodec	ff_g728_decoder

Macro Definition Documentation

MAX_BACKWARD_FILTER_ORDER

#define MAX_BACKWARD_FILTER_ORDER   LPC

Definition at line 36 of file g728dec.c.

MAX_BACKWARD_FILTER_LEN

#define MAX_BACKWARD_FILTER_LEN   NFRSZ

Definition at line 37 of file g728dec.c.

MAX_BACKWARD_FILTER_NONREC

#define MAX_BACKWARD_FILTER_NONREC   NONR

Definition at line 38 of file g728dec.c.

ATTEN

#define ATTEN   0.75f

Definition at line 39 of file g728dec.c.

LPCW

#define LPCW   10 /* Perceptual weighting filter order */

Definition at line 42 of file g728dec.c.

GOFF

#define GOFF   32.0f /* Log-gain offset value */

Definition at line 43 of file g728dec.c.

SAMPLES_PER_FRAME

#define SAMPLES_PER_FRAME   20

Function Documentation

g728_init_static_data()

static av_cold void g728_init_static_data ( void  )

static

Definition at line 51 of file g728dec.c.

Referenced by g728_decode_init().

g728_decode_init()

static av_cold int g728_decode_init ( AVCodecContext *  avctx )

static

Definition at line 85 of file g728dec.c.

g728_decode_close()

static av_cold int g728_decode_close ( AVCodecContext *  avctx )

static

Definition at line 109 of file g728dec.c.

hybrid_window()

static int hybrid_window ( AVFloatDSPContext *  fdsp, int  order, int  n, int  non_rec, float *  out, const float *  hist, float *  out2, const float *  window  )

static

Definition at line 116 of file g728dec.c.

Referenced by decode_frame().

decode_frame()

static void decode_frame ( G728Context *  s, GetBitContext *  gb, float *  dst  )

static

Definition at line 124 of file g728dec.c.

Referenced by g728_decode_frame().

g728_decode_frame()

static int g728_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame_ptr, AVPacket *  avpkt  )

static

Definition at line 181 of file g728dec.c.

Variable Documentation

g728_gq_db

float g728_gq_db[8]

static

Definition at line 45 of file g728dec.c.

Referenced by decode_frame(), and g728_init_static_data().

g728_y_db

float g728_y_db[128]

static

Definition at line 46 of file g728dec.c.

Referenced by decode_frame(), and g728_init_static_data().

g728_wnr_r

float g728_wnr_r[FFALIGN(NSBSZ, 16)]

static

Definition at line 47 of file g728dec.c.

Referenced by decode_frame(), and g728_init_static_data().

g728_wnrg_r

float g728_wnrg_r[FFALIGN(NSBGSZ, 16)]

static

Definition at line 48 of file g728dec.c.

Referenced by decode_frame(), and g728_init_static_data().

g728_facv_f

float g728_facv_f[FFALIGN(LPC, 16)]

static

Definition at line 49 of file g728dec.c.

Referenced by decode_frame(), and g728_init_static_data().

ff_g728_decoder

const FFCodec ff_g728_decoder

Initial value:

= {
    .p.name         = "g728",
    CODEC_LONG_NAME("G.728)"),
    .p.type         = AVMEDIA_TYPE_AUDIO,
    .p.id           = AV_CODEC_ID_G728,
    .priv_data_size = sizeof(G728Context),
    .init           = g728_decode_init,
    .close          = g728_decode_close,
    FF_CODEC_DECODE_CB(g728_decode_frame),
    .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF |
                      AV_CODEC_CAP_DR1,
}

Definition at line 209 of file g728dec.c.