cngdec.c File Reference

#include <math.h>
#include "libavutil/common.h"
#include "avcodec.h"
#include "celp_filters.h"
#include "internal.h"
#include "libavutil/lfg.h"

Go to the source code of this file.

Data Structures
struct	CNGContext

Functions
static av_cold int	cng_decode_close (AVCodecContext *avctx)
static av_cold int	cng_decode_init (AVCodecContext *avctx)
static void	make_lpc_coefs (float *lpc, const float *refl, int order)
static void	cng_decode_flush (AVCodecContext *avctx)
static int	cng_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)

Variables
AVCodec	ff_comfortnoise_decoder

Function Documentation

static av_cold int cng_decode_close ( AVCodecContext *  avctx )

static

Definition at line 41 of file cngdec.c.

Referenced by cng_decode_init().

static av_cold int cng_decode_init ( AVCodecContext *  avctx )

static

Definition at line 52 of file cngdec.c.

static void make_lpc_coefs ( float *  lpc, const float *  refl, int  order  )

static

Definition at line 79 of file cngdec.c.

Referenced by cng_decode_frame().

static void cng_decode_flush ( AVCodecContext *  avctx )

static

Definition at line 96 of file cngdec.c.

static int cng_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame_ptr, AVPacket *  avpkt  )

static

Definition at line 102 of file cngdec.c.

Variable Documentation

AVCodec ff_comfortnoise_decoder

Initial value:

= {
    .name           = "comfortnoise",
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_COMFORT_NOISE,
    .priv_data_size = sizeof(CNGContext),
    .init           = cng_decode_init,
    .decode         = cng_decode_frame,
    .flush          = cng_decode_flush,
    .close          = cng_decode_close,
    .long_name      = NULL_IF_CONFIG_SMALL("RFC 3389 comfort noise generator"),
    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
                                                     AV_SAMPLE_FMT_NONE },
    .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_DR1,
}

Definition at line 158 of file cngdec.c.