cngdec.c File Reference

#include <math.h>
#include "libavutil/common.h"
#include "libavutil/ffmath.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "celp_filters.h"
#include "codec_internal.h"
#include "decode.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, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)

Variables
const FFCodec	ff_comfortnoise_decoder

Function Documentation

cng_decode_close()

static av_cold int cng_decode_close ( AVCodecContext *  avctx )

static

Definition at line 45 of file cngdec.c.

cng_decode_init()

static av_cold int cng_decode_init ( AVCodecContext *  avctx )

static

Definition at line 56 of file cngdec.c.

make_lpc_coefs()

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

static

Definition at line 83 of file cngdec.c.

Referenced by cng_decode_frame().

cng_decode_flush()

static void cng_decode_flush ( AVCodecContext *  avctx )

static

Definition at line 100 of file cngdec.c.

cng_decode_frame()

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

static

Definition at line 106 of file cngdec.c.

Variable Documentation

ff_comfortnoise_decoder

const FFCodec ff_comfortnoise_decoder

Initial value:

= {
    .p.name         = "comfortnoise",
    CODEC_LONG_NAME("RFC 3389 comfort noise generator"),
    .p.type         = AVMEDIA_TYPE_AUDIO,
    .p.id           = AV_CODEC_ID_COMFORT_NOISE,
    .priv_data_size = sizeof(CNGContext),
    .init           = cng_decode_init,
    FF_CODEC_DECODE_CB(cng_decode_frame),
    .flush          = cng_decode_flush,
    .close          = cng_decode_close,
    .p.sample_fmts  = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
                                                     AV_SAMPLE_FMT_NONE },
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 166 of file cngdec.c.