Libav
Data Structures | Functions | Variables
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",
.long_name = NULL_IF_CONFIG_SMALL("RFC 3389 comfort noise generator"),
.priv_data_size = sizeof(CNGContext),
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_DR1,
}
static int cng_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: cngdec.c:102
signed 16 bits
Definition: samplefmt.h:52
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:269
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:711
#define CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:740
sample_fmts
Definition: avconv_filter.c:68
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:142
static void cng_decode_flush(AVCodecContext *avctx)
Definition: cngdec.c:96
AV_SAMPLE_FMT_NONE
Definition: avconv_filter.c:68
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:489
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
Definition: alsdec.c:1792
AVSampleFormat
Audio Sample Formats.
Definition: samplefmt.h:49
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:498
static av_cold int cng_decode_close(AVCodecContext *avctx)
Definition: cngdec.c:41
static av_cold int cng_decode_init(AVCodecContext *avctx)
Definition: cngdec.c:52

Definition at line 160 of file cngdec.c.