FFmpeg  4.0
Data Structures | Macros | Functions | Variables
opusenc.c File Reference
#include "opusenc.h"
#include "opus_pvq.h"
#include "opusenc_psy.h"
#include "opustab.h"
#include "libavutil/float_dsp.h"
#include "libavutil/opt.h"
#include "internal.h"
#include "bytestream.h"
#include "audio_frame_queue.h"

Go to the source code of this file.

Data Structures

struct  OpusEncContext
 

Macros

#define OPUSENC_FLAGS   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
 

Functions

static void opus_write_extradata (AVCodecContext *avctx)
 
static int opus_gen_toc (OpusEncContext *s, uint8_t *toc, int *size, int *fsize_needed)
 
static void celt_frame_setup_input (OpusEncContext *s, CeltFrame *f)
 
static void celt_apply_preemph_filter (OpusEncContext *s, CeltFrame *f)
 
static void celt_frame_mdct (OpusEncContext *s, CeltFrame *f)
 
static void celt_enc_tf (CeltFrame *f, OpusRangeCoder *rc)
 
static void celt_enc_quant_pfilter (OpusRangeCoder *rc, CeltFrame *f)
 
static void exp_quant_coarse (OpusRangeCoder *rc, CeltFrame *f, float last_energy[][CELT_MAX_BANDS], int intra)
 
static void celt_quant_coarse (CeltFrame *f, OpusRangeCoder *rc, float last_energy[][CELT_MAX_BANDS])
 
static void celt_quant_fine (CeltFrame *f, OpusRangeCoder *rc)
 
static void celt_quant_final (OpusEncContext *s, OpusRangeCoder *rc, CeltFrame *f)
 
static void celt_encode_frame (OpusEncContext *s, OpusRangeCoder *rc, CeltFrame *f, int index)
 
static int write_opuslacing (uint8_t *dst, int v)
 
static void opus_packet_assembler (OpusEncContext *s, AVPacket *avpkt)
 
static AVFrame * spawn_empty_frame (OpusEncContext *s)
 
static int opus_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
 
static av_cold int opus_encode_end (AVCodecContext *avctx)
 
static av_cold int opus_encode_init (AVCodecContext *avctx)
 

Variables

static const AVOption opusenc_options []
 
static const AVClass opusenc_class
 
static const AVCodecDefault opusenc_defaults []
 
AVCodec ff_opus_encoder
 

Macro Definition Documentation

◆ OPUSENC_FLAGS

#define OPUSENC_FLAGS   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM

Definition at line 711 of file opusenc.c.

Function Documentation

◆ opus_write_extradata()

static void opus_write_extradata ( AVCodecContext *  avctx)
static

Definition at line 60 of file opusenc.c.

Referenced by opus_encode_init().

◆ opus_gen_toc()

static int opus_gen_toc ( OpusEncContext *  s,
uint8_t *  toc,
int *  size,
int *  fsize_needed 
)
static

Definition at line 73 of file opusenc.c.

Referenced by opus_packet_assembler().

◆ celt_frame_setup_input()

static void celt_frame_setup_input ( OpusEncContext *  s,
CeltFrame *  f 
)
static

Definition at line 116 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_apply_preemph_filter()

static void celt_apply_preemph_filter ( OpusEncContext *  s,
CeltFrame *  f 
)
static

Definition at line 157 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_frame_mdct()

static void celt_frame_mdct ( OpusEncContext *  s,
CeltFrame *  f 
)
static

Definition at line 192 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_enc_tf()

static void celt_enc_tf ( CeltFrame *  f,
OpusRangeCoder *  rc 
)
static

Definition at line 258 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_enc_quant_pfilter()

static void celt_enc_quant_pfilter ( OpusRangeCoder *  rc,
CeltFrame *  f 
)
static

Definition at line 285 of file opusenc.c.

Referenced by celt_encode_frame().

◆ exp_quant_coarse()

static void exp_quant_coarse ( OpusRangeCoder *  rc,
CeltFrame *  f,
float  last_energy[][CELT_MAX_BANDS],
int  intra 
)
static

Definition at line 322 of file opusenc.c.

Referenced by celt_quant_coarse().

◆ celt_quant_coarse()

static void celt_quant_coarse ( CeltFrame *  f,
OpusRangeCoder *  rc,
float  last_energy[][CELT_MAX_BANDS] 
)
static

Definition at line 366 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_quant_fine()

static void celt_quant_fine ( CeltFrame *  f,
OpusRangeCoder *  rc 
)
static

Definition at line 386 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_quant_final()

static void celt_quant_final ( OpusEncContext *  s,
OpusRangeCoder *  rc,
CeltFrame *  f 
)
static

Definition at line 404 of file opusenc.c.

Referenced by celt_encode_frame().

◆ celt_encode_frame()

static void celt_encode_frame ( OpusEncContext *  s,
OpusRangeCoder *  rc,
CeltFrame *  f,
int  index 
)
static

Definition at line 423 of file opusenc.c.

Referenced by opus_encode_frame().

◆ write_opuslacing()

static int write_opuslacing ( uint8_t *  dst,
int  v 
)
inlinestatic

Definition at line 490 of file opusenc.c.

Referenced by opus_packet_assembler().

◆ opus_packet_assembler()

static void opus_packet_assembler ( OpusEncContext *  s,
AVPacket *  avpkt 
)
static

Definition at line 497 of file opusenc.c.

Referenced by opus_encode_frame().

◆ spawn_empty_frame()

static AVFrame* spawn_empty_frame ( OpusEncContext *  s)
static

Definition at line 523 of file opusenc.c.

Referenced by opus_encode_frame(), and opus_encode_init().

◆ opus_encode_frame()

static int opus_encode_frame ( AVCodecContext *  avctx,
AVPacket *  avpkt,
const AVFrame *  frame,
int *  got_packet_ptr 
)
static

Definition at line 543 of file opusenc.c.

◆ opus_encode_end()

static av_cold int opus_encode_end ( AVCodecContext *  avctx)
static

Definition at line 611 of file opusenc.c.

◆ opus_encode_init()

static av_cold int opus_encode_init ( AVCodecContext *  avctx)
static

Definition at line 631 of file opusenc.c.

Variable Documentation

◆ opusenc_options

const AVOption opusenc_options[]
static
Initial value:
= {
{ "opus_delay", "Maximum delay in milliseconds", 0x42, AV_OPT_TYPE_FLOAT, { .dbl = OPUS_MAX_LOOKAHEAD }, 2.5f, OPUS_MAX_LOOKAHEAD, OPUSENC_FLAGS, "max_delay_ms" },
{ NULL },
}
NULL
#define NULL
Definition: coverity.c:32
OPUSENC_FLAGS
#define OPUSENC_FLAGS
Definition: opusenc.c:711
OPUS_MAX_LOOKAHEAD
#define OPUS_MAX_LOOKAHEAD
Definition: opusenc.h:32
AV_OPT_TYPE_FLOAT
Definition: opt.h:226

Definition at line 712 of file opusenc.c.

◆ opusenc_class

const AVClass opusenc_class
static
Initial value:
= {
.class_name = "Opus encoder",
.item_name = av_default_item_name,
.option = opusenc_options,
.version = LIBAVUTIL_VERSION_INT,
}
opusenc_options
static const AVOption opusenc_options[]
Definition: opusenc.c:712
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191

Definition at line 717 of file opusenc.c.

◆ opusenc_defaults

const AVCodecDefault opusenc_defaults[]
static
Initial value:
= {
{ "b", "0" },
{ "compression_level", "10" },
{ NULL },
}
NULL
#define NULL
Definition: coverity.c:32

Definition at line 724 of file opusenc.c.

◆ ff_opus_encoder

AVCodec ff_opus_encoder
Initial value:
= {
.name = "opus",
.long_name = NULL_IF_CONFIG_SMALL("Opus"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_OPUS,
.defaults = opusenc_defaults,
.priv_class = &opusenc_class,
.priv_data_size = sizeof(OpusEncContext),
.init = opus_encode_init,
.encode2 = opus_encode_frame,
.close = opus_encode_end,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
.capabilities = AV_CODEC_CAP_EXPERIMENTAL | AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY,
.supported_samplerates = (const int []){ 48000, 0 },
.channel_layouts = (const uint64_t []){ AV_CH_LAYOUT_MONO,
AV_CH_LAYOUT_STEREO, 0 },
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_NONE },
}
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
AV_SAMPLE_FMT_FLTP
float, planar
Definition: samplefmt.h:69
opus_encode_init
static av_cold int opus_encode_init(AVCodecContext *avctx)
Definition: opusenc.c:631
opusenc_defaults
static const AVCodecDefault opusenc_defaults[]
Definition: opusenc.c:724
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
opus_encode_end
static av_cold int opus_encode_end(AVCodecContext *avctx)
Definition: opusenc.c:611
AV_CODEC_CAP_EXPERIMENTAL
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1007
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:86
AV_CODEC_CAP_DELAY
#define AV_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:984
FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
opus_encode_frame
static int opus_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition: opusenc.c:543
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AV_CODEC_CAP_SMALL_LAST_FRAME
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: avcodec.h:989
AV_CODEC_ID_OPUS
Definition: avcodec.h:611
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
opusenc_class
static const AVClass opusenc_class
Definition: opusenc.c:717
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:85

Definition at line 730 of file opusenc.c.

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