FFmpeg
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/mem_internal.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 AVFramespawn_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 []
 
const AVCodec ff_opus_encoder
 

Macro Definition Documentation

◆ OPUSENC_FLAGS

Definition at line 701 of file opusenc.c.

Function Documentation

◆ opus_write_extradata()

static void opus_write_extradata ( AVCodecContext avctx)
static

Definition at line 61 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 74 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 117 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 191 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 256 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 283 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 320 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 363 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 383 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 400 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 418 of file opusenc.c.

Referenced by opus_encode_frame().

◆ write_opuslacing()

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

Definition at line 483 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 490 of file opusenc.c.

Referenced by opus_encode_frame().

◆ spawn_empty_frame()

static AVFrame* spawn_empty_frame ( OpusEncContext s)
static

Definition at line 516 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 535 of file opusenc.c.

◆ opus_encode_end()

static av_cold int opus_encode_end ( AVCodecContext avctx)
static

Definition at line 603 of file opusenc.c.

◆ opus_encode_init()

static av_cold int opus_encode_init ( AVCodecContext avctx)
static

Definition at line 621 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" },
{ "apply_phase_inv", "Apply intensity stereo phase inversion", 0x42, AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, OPUSENC_FLAGS, "apply_phase_inv" },
{ NULL },
}

Definition at line 702 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,
}

Definition at line 708 of file opusenc.c.

◆ opusenc_defaults

const AVCodecDefault opusenc_defaults[]
static
Initial value:
= {
{ "b", "0" },
{ "compression_level", "10" },
{ NULL },
}

Definition at line 715 of file opusenc.c.

◆ ff_opus_encoder

const AVCodec ff_opus_encoder
Initial value:
= {
.name = "opus",
.long_name = NULL_IF_CONFIG_SMALL("Opus"),
.defaults = opusenc_defaults,
.priv_class = &opusenc_class,
.priv_data_size = sizeof(OpusEncContext),
.encode2 = opus_encode_frame,
.close = opus_encode_end,
.supported_samplerates = (const int []){ 48000, 0 },
.channel_layouts = (const uint64_t []){ AV_CH_LAYOUT_MONO,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
}

Definition at line 721 of file opusenc.c.

AV_SAMPLE_FMT_FLTP
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition: samplefmt.h:69
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:41
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:90
opusenc_options
static const AVOption opusenc_options[]
Definition: opusenc.c:702
opusenc_defaults
static const AVCodecDefault opusenc_defaults[]
Definition: opusenc.c:715
opus_encode_end
static av_cold int opus_encode_end(AVCodecContext *avctx)
Definition: opusenc.c:603
OPUSENC_FLAGS
#define OPUSENC_FLAGS
Definition: opusenc.c:701
opus_encode_frame
static int opus_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition: opusenc.c:535
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:91
OPUS_MAX_LOOKAHEAD
#define OPUS_MAX_LOOKAHEAD
Definition: opusenc.h:32
AV_CODEC_CAP_EXPERIMENTAL
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: codec.h:100
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
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:117
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
AV_CODEC_ID_OPUS
@ AV_CODEC_ID_OPUS
Definition: codec_id.h:481
OpusEncContext
Definition: opusenc.c:34
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
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:49
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
opusenc_class
static const AVClass opusenc_class
Definition: opusenc.c:708
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: codec.h:77
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
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: codec.h:82
opus_encode_init
static av_cold int opus_encode_init(AVCodecContext *avctx)
Definition: opusenc.c:621