Native Vorbis encoder. More...

#include <float.h>
#include "libavutil/float_dsp.h"
#include "avcodec.h"
#include "internal.h"
#include "fft.h"
#include "mathops.h"
#include "vorbis.h"
#include "vorbis_enc_data.h"
#include "audio_frame_queue.h"
#include "libavfilter/bufferqueue.h"
#include "put_bits.h"
#include <assert.h>

Data Structures
struct	vorbis_enc_codebook

struct	vorbis_enc_floor_class

struct	vorbis_enc_floor

struct	vorbis_enc_residue

struct	vorbis_enc_mapping

struct	vorbis_enc_mode

struct	vorbis_enc_context

Macros
#define	BITSTREAM_WRITER_LE

#define	MAX_CHANNELS 2

#define	MAX_CODEBOOK_DIM 8

#define	MAX_FLOOR_CLASS_DIM 4

#define	NUM_FLOOR_PARTITIONS 8

#define	MAX_FLOOR_VALUES (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)

#define	RESIDUE_SIZE 1600

#define	RESIDUE_PART_SIZE 32

#define	NUM_RESIDUE_PARTITIONS (RESIDUE_SIZE/RESIDUE_PART_SIZE)

Functions
static int	put_codeword (PutBitContext pb, vorbis_enc_codebook cb, int entry)

static int	cb_lookup_vals (int lookup, int dimensions, int entries)

static int	ready_codebook (vorbis_enc_codebook *cb)

static int	ready_residue (vorbis_enc_residue rc, vorbis_enc_context venc)

static av_cold int	dsp_init (AVCodecContext avctx, vorbis_enc_context venc)

static int	create_vorbis_context (vorbis_enc_context venc, AVCodecContext avctx)

static void	put_float (PutBitContext *pb, float f)

static void	put_codebook_header (PutBitContext pb, vorbis_enc_codebook cb)

static void	put_floor_header (PutBitContext pb, vorbis_enc_floor fc)

static void	put_residue_header (PutBitContext pb, vorbis_enc_residue rc)

static int	put_main_header (vorbis_enc_context venc, uint8_t *out)

static float	get_floor_average (vorbis_enc_floor fc, float coeffs, int i)

static void	floor_fit (vorbis_enc_context venc, vorbis_enc_floor fc, float coeffs, uint16_t posts, int samples)

static int	render_point (int x0, int y0, int x1, int y1, int x)

static int	floor_encode (vorbis_enc_context venc, vorbis_enc_floor fc, PutBitContext pb, uint16_t posts, float *floor, int samples)

static float *	put_vector (vorbis_enc_codebook book, PutBitContext pb, float *num)

static int	residue_encode (vorbis_enc_context venc, vorbis_enc_residue rc, PutBitContext pb, float coeffs, int samples, int real_ch)

static int	apply_window_and_mdct (vorbis_enc_context *venc)

static AVFrame *	spawn_empty_frame (AVCodecContext *avctx, int channels)

static void	move_audio (vorbis_enc_context *venc, int sf_size)

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

static av_cold int	vorbis_encode_close (AVCodecContext *avctx)

static av_cold int	vorbis_encode_init (AVCodecContext *avctx)

Variables
AVCodec	ff_vorbis_encoder

Detailed Description

Native Vorbis encoder.

Author: Oded Shimon ods15.nosp@m.@ods.nosp@m.15.dy.nosp@m.ndns.nosp@m..org

Definition in file vorbisenc.c.

Macro Definition Documentation

◆ BITSTREAM_WRITER_LE

#define BITSTREAM_WRITER_LE

Definition at line 40 of file vorbisenc.c.

◆ MAX_CHANNELS

#define MAX_CHANNELS 2

Definition at line 141 of file vorbisenc.c.

Referenced by residue_encode().

◆ MAX_CODEBOOK_DIM

#define MAX_CODEBOOK_DIM 8

Definition at line 142 of file vorbisenc.c.

Referenced by residue_encode().

◆ MAX_FLOOR_CLASS_DIM

#define MAX_FLOOR_CLASS_DIM 4

Definition at line 144 of file vorbisenc.c.

◆ NUM_FLOOR_PARTITIONS

#define NUM_FLOOR_PARTITIONS 8

Definition at line 145 of file vorbisenc.c.

Referenced by create_vorbis_context().

◆ MAX_FLOOR_VALUES

#define MAX_FLOOR_VALUES (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)

Definition at line 146 of file vorbisenc.c.

Referenced by floor_encode(), floor_fit(), and vorbis_encode_frame().

◆ RESIDUE_SIZE

#define RESIDUE_SIZE 1600

Definition at line 148 of file vorbisenc.c.

◆ RESIDUE_PART_SIZE

#define RESIDUE_PART_SIZE 32

Definition at line 149 of file vorbisenc.c.

◆ NUM_RESIDUE_PARTITIONS

#define NUM_RESIDUE_PARTITIONS (RESIDUE_SIZE/RESIDUE_PART_SIZE)

Definition at line 150 of file vorbisenc.c.

Referenced by residue_encode().

Function Documentation

◆ put_codeword()

static int put_codeword	(	PutBitContext *	pb,
		vorbis_enc_codebook *	cb,
		int	entry
	)

inlinestatic

Definition at line 152 of file vorbisenc.c.

Referenced by floor_encode(), put_vector(), and residue_encode().

◆ cb_lookup_vals()

static int cb_lookup_vals	(	int	lookup,
		int	dimensions,
		int	entries
	)

static

Definition at line 164 of file vorbisenc.c.

Referenced by create_vorbis_context(), put_codebook_header(), and ready_codebook().

◆ ready_codebook()

static int ready_codebook ( vorbis_enc_codebook * cb )

static

Definition at line 173 of file vorbisenc.c.

Referenced by create_vorbis_context().

◆ ready_residue()

static int ready_residue	(	vorbis_enc_residue *	rc,
		vorbis_enc_context *	venc
	)

static

Definition at line 210 of file vorbisenc.c.

Referenced by create_vorbis_context().

◆ dsp_init()

static av_cold int dsp_init	(	AVCodecContext *	avctx,
		vorbis_enc_context *	venc
	)

static

Definition at line 249 of file vorbisenc.c.

Referenced by create_vorbis_context().

◆ create_vorbis_context()

static int create_vorbis_context	(	vorbis_enc_context *	venc,
		AVCodecContext *	avctx
	)

static

Definition at line 269 of file vorbisenc.c.

Referenced by vorbis_encode_init().

◆ put_float()

static void put_float	(	PutBitContext *	pb,
		float	f
	)

static

Definition at line 470 of file vorbisenc.c.

Referenced by put_codebook_header().

◆ put_codebook_header()

static void put_codebook_header	(	PutBitContext *	pb,
		vorbis_enc_codebook *	cb
	)

static

Definition at line 484 of file vorbisenc.c.

Referenced by put_main_header().

◆ put_floor_header()

static void put_floor_header	(	PutBitContext *	pb,
		vorbis_enc_floor *	fc
	)

static

Definition at line 549 of file vorbisenc.c.

Referenced by put_main_header().

◆ put_residue_header()

static void put_residue_header	(	PutBitContext *	pb,
		vorbis_enc_residue *	rc
	)

static

Definition at line 582 of file vorbisenc.c.

Referenced by put_main_header().

◆ put_main_header()

static int put_main_header	(	vorbis_enc_context *	venc,
		uint8_t **	out
	)

static

Definition at line 614 of file vorbisenc.c.

Referenced by vorbis_encode_init().

◆ get_floor_average()

static float get_floor_average	(	vorbis_enc_floor *	fc,
		float *	coeffs,
		int	i
	)

static

Definition at line 749 of file vorbisenc.c.

Referenced by floor_fit().

◆ floor_fit()

static void floor_fit	(	vorbis_enc_context *	venc,
		vorbis_enc_floor *	fc,
		float *	coeffs,
		uint16_t *	posts,
		int	samples
	)

static

Definition at line 761 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

◆ render_point()

static int render_point	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	x
	)

static

Definition at line 788 of file vorbisenc.c.

Referenced by floor_encode().

◆ floor_encode()

static int floor_encode	(	vorbis_enc_context *	venc,
		vorbis_enc_floor *	fc,
		PutBitContext *	pb,
		uint16_t *	posts,
		float *	floor,
		int	samples
	)

static

Definition at line 793 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

◆ put_vector()

static float* put_vector	(	vorbis_enc_codebook *	book,
		PutBitContext *	pb,
		float *	num
	)

static

Definition at line 882 of file vorbisenc.c.

Referenced by residue_encode().

◆ residue_encode()

static int residue_encode	(	vorbis_enc_context *	venc,
		vorbis_enc_residue *	rc,
		PutBitContext *	pb,
		float *	coeffs,
		int	samples,
		int	real_ch
	)

static

Definition at line 905 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

◆ apply_window_and_mdct()

static int apply_window_and_mdct ( vorbis_enc_context * venc )

static

Definition at line 1000 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

◆ spawn_empty_frame()

static AVFrame* spawn_empty_frame	(	AVCodecContext *	avctx,
		int	channels
	)

static

Definition at line 1026 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

◆ move_audio()

static void move_audio	(	vorbis_enc_context *	venc,
		int	sf_size
	)

static

Definition at line 1051 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

◆ vorbis_encode_frame()

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

static

Definition at line 1085 of file vorbisenc.c.

◆ vorbis_encode_close()

static av_cold int vorbis_encode_close ( AVCodecContext * avctx )

static

Definition at line 1204 of file vorbisenc.c.

Referenced by vorbis_encode_init().

◆ vorbis_encode_init()

static av_cold int vorbis_encode_init ( AVCodecContext * avctx )

static

Definition at line 1267 of file vorbisenc.c.

Variable Documentation

◆ ff_vorbis_encoder

AVCodec ff_vorbis_encoder

Initial value:

= {
    .name           = "vorbis",
    .long_name      = NULL_IF_CONFIG_SMALL("Vorbis"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_VORBIS,
    .priv_data_size = sizeof(vorbis_enc_context),
    .init           = vorbis_encode_init,
    .encode2        = vorbis_encode_frame,
    .close          = vorbis_encode_close,
    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_EXPERIMENTAL,
    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
                                                     AV_SAMPLE_FMT_NONE },
}

Definition at line 1301 of file vorbisenc.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ BITSTREAM_WRITER_LE

◆ MAX_CHANNELS

◆ MAX_CODEBOOK_DIM

◆ MAX_FLOOR_CLASS_DIM

◆ NUM_FLOOR_PARTITIONS

◆ MAX_FLOOR_VALUES

◆ RESIDUE_SIZE

◆ RESIDUE_PART_SIZE

◆ NUM_RESIDUE_PARTITIONS

Function Documentation

◆ put_codeword()

◆ cb_lookup_vals()

◆ ready_codebook()

◆ ready_residue()

◆ dsp_init()

◆ create_vorbis_context()

◆ put_float()

◆ put_codebook_header()

◆ put_floor_header()

◆ put_residue_header()

◆ put_main_header()

◆ get_floor_average()

◆ floor_fit()

◆ render_point()

◆ floor_encode()

◆ put_vector()

◆ residue_encode()

◆ apply_window_and_mdct()

◆ spawn_empty_frame()

◆ move_audio()

◆ vorbis_encode_frame()

◆ vorbis_encode_close()

◆ vorbis_encode_init()

Variable Documentation

◆ ff_vorbis_encoder