evrcdec.c File Reference

Enhanced Variable Rate Codec, Service Option 3 decoder. More...

#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include "get_bits.h"
#include "evrcdata.h"
#include "acelp_vectors.h"
#include "lsp.h"

Classes
struct	EVRCAFrame
	EVRC-A unpacked data frame. More...
struct	EVRCContext
struct	PfCoeff

Macros
#define	MIN_LSP_SEP   (0.05 / (2.0 * M_PI))
#define	MIN_DELAY   20
#define	MAX_DELAY   120
#define	NB_SUBFRAMES   3
#define	SUBFRAME_SIZE   54
#define	FILTER_ORDER   10
#define	ACB_SIZE   128
#define	OFFSET(x)   offsetof(EVRCContext, x)
#define	AD   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Typedefs
typedef struct EVRCAFrame	EVRCAFrame
	EVRC-A unpacked data frame.
typedef struct EVRCContext	EVRCContext

Enumerations
enum	evrc_packet_rate {   RATE_ERRS = -1, SILENCE, RATE_QUANT, RATE_QUARTER,   RATE_HALF, RATE_FULL }

Variables
AVCodec	ff_evrc_decoder

Detailed Description

Enhanced Variable Rate Codec, Service Option 3 decoder.

Author

Paul B Mahol

Variable Documentation

ff_evrc_decoder

AVCodec ff_evrc_decoder

Initial value:

= {
    .name           = "evrc",
    .long_name      = NULL_IF_CONFIG_SMALL("EVRC (Enhanced Variable Rate Codec)"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_EVRC,
    .init           = evrc_decode_init,
    .decode         = evrc_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
    .priv_data_size = sizeof(EVRCContext),
    .priv_class     = &evrcdec_class,
}