opus.c File Reference

Opus decoder/parser shared code. More...

#include <stdint.h>
#include "libavutil/error.h"
#include "libavutil/ffmath.h"
#include "opus_celt.h"
#include "opustab.h"
#include "vorbis.h"

Go to the source code of this file.

Macros
#define	NORMC(bits)   ((bits) << (f->channels - 1) << f->size >> 2)

Functions
static int	xiph_lacing_16bit (const uint8_t **ptr, const uint8_t *end)
	Read a 1- or 2-byte frame length. More...
static int	xiph_lacing_full (const uint8_t **ptr, const uint8_t *end)
	Read a multi-byte length (used for code 3 packet padding size) More...
int	ff_opus_parse_packet (OpusPacket *pkt, const uint8_t *buf, int buf_size, int self_delimiting)
	Parse Opus packet info from raw packet data. More...
static int	channel_reorder_vorbis (int nb_channels, int channel_idx)
static int	channel_reorder_unknown (int nb_channels, int channel_idx)
av_cold int	ff_opus_parse_extradata (AVCodecContext *avctx, OpusContext *s)
void	ff_celt_quant_bands (CeltFrame *f, OpusRangeCoder *rc)
void	ff_celt_bitalloc (CeltFrame *f, OpusRangeCoder *rc, int encode)

Variables
static const uint16_t	opus_frame_duration [32]

Detailed Description

Opus decoder/parser shared code.

Definition in file opus.c.

Macro Definition Documentation

NORMC

#define NORMC

(

bits

)

((bits) << (f->channels - 1) << f->size >> 2)

Definition at line 550 of file opus.c.

Referenced by ff_celt_bitalloc().

Function Documentation

xiph_lacing_16bit()

static int xiph_lacing_16bit ( const uint8_t **  ptr, const uint8_t *  end  )

inlinestatic

Read a 1- or 2-byte frame length.

Definition at line 51 of file opus.c.

Referenced by ff_opus_parse_packet().

xiph_lacing_full()

static int xiph_lacing_full ( const uint8_t **  ptr, const uint8_t *  end  )

inlinestatic

Read a multi-byte length (used for code 3 packet padding size)

Definition at line 69 of file opus.c.

Referenced by ff_opus_parse_packet().

ff_opus_parse_packet()

int ff_opus_parse_packet	(	OpusPacket *	pkt,
		const uint8_t *	buf,
		int	buf_size,
		int	self_delimiting
	)

Parse Opus packet info from raw packet data.

Definition at line 90 of file opus.c.

Referenced by opus_decode_packet(), and opus_find_frame_end().

channel_reorder_vorbis()

static int channel_reorder_vorbis ( int  nb_channels, int  channel_idx  )

static

Definition at line 281 of file opus.c.

Referenced by ff_opus_parse_extradata().

channel_reorder_unknown()

static int channel_reorder_unknown ( int  nb_channels, int  channel_idx  )

static

Definition at line 286 of file opus.c.

Referenced by ff_opus_parse_extradata().

ff_opus_parse_extradata()

av_cold int ff_opus_parse_extradata	(	AVCodecContext *	avctx,
		OpusContext *	s
	)

Definition at line 291 of file opus.c.

Referenced by opus_decode_init(), and opus_find_frame_end().

ff_celt_quant_bands()

void ff_celt_quant_bands	(	CeltFrame *	f,
		OpusRangeCoder *	rc
	)

Definition at line 443 of file opus.c.

Referenced by celt_encode_frame(), and ff_celt_decode_frame().

ff_celt_bitalloc()

void ff_celt_bitalloc	(	CeltFrame *	f,
		OpusRangeCoder *	rc,
		int	encode
	)

Definition at line 552 of file opus.c.

Referenced by bands_dist(), celt_encode_frame(), and ff_celt_decode_frame().

Variable Documentation

opus_frame_duration

const uint16_t opus_frame_duration[32]

static

Initial value:

= {
    480, 960, 1920, 2880,
    480, 960, 1920, 2880,
    480, 960, 1920, 2880,
    480, 960,
    480, 960,
    120, 240,  480,  960,
    120, 240,  480,  960,
    120, 240,  480,  960,
    120, 240,  480,  960,
}

Definition at line 36 of file opus.c.

Referenced by ff_opus_parse_packet().