vorbisdec.c File Reference

Vorbis I decoder. More...

#include <inttypes.h>
#include <math.h>
#include "avcodec.h"
#include "internal.h"
#include "get_bits.h"
#include "dsputil.h"
#include "fft.h"
#include "fmtconvert.h"
#include "vorbis.h"
#include "xiph.h"
#include <assert.h>

Go to the source code of this file.

Data Structures

struct  vorbis_codebook
struct  vorbis_floor
union  vorbis_floor::vorbis_floor_u
struct  vorbis_floor::vorbis_floor_u::vorbis_floor0_s
struct  vorbis_floor::vorbis_floor_u::vorbis_floor1_s
struct  vorbis_residue
struct  vorbis_mapping
struct  vorbis_mode
struct  vorbis_context_s

Macros

#define BITSTREAM_READER_LE
#define V_NB_BITS   8
#define V_NB_BITS2   11
#define V_MAX_VLCS   (1 << 16)
#define V_MAX_PARTITIONS   (1 << 20)
#define BARK(x)   (13.1f * atan(0.00074f * (x)) + 2.24f * atan(1.85e-8f * (x) * (x)) + 1e-4f * (x))
#define VALIDATE_INDEX(idx, limit)
#define GET_VALIDATED_INDEX(idx, bits, limit)

Typedefs

typedef union vorbis_floor_u vorbis_floor_data
typedef struct vorbis_floor0_s vorbis_floor0
typedef struct vorbis_floor1_s vorbis_floor1
typedef int(* vorbis_floor_decode_func )(struct vorbis_context_s *, vorbis_floor_data *, float *)
typedef struct vorbis_context_s vorbis_context

Functions

static float vorbisfloat2float (unsigned val)
static void vorbis_free (vorbis_context *vc)
static int vorbis_parse_setup_hdr_codebooks (vorbis_context *vc)
static int vorbis_parse_setup_hdr_tdtransforms (vorbis_context *vc)
static int vorbis_floor0_decode (vorbis_context *vc, vorbis_floor_data *vfu, float *vec)
static void create_map (vorbis_context *vc, unsigned floor_number)
static int vorbis_floor1_decode (vorbis_context *vc, vorbis_floor_data *vfu, float *vec)
static int vorbis_parse_setup_hdr_floors (vorbis_context *vc)
static int vorbis_parse_setup_hdr_residues (vorbis_context *vc)
static int vorbis_parse_setup_hdr_mappings (vorbis_context *vc)
static int vorbis_parse_setup_hdr_modes (vorbis_context *vc)
static int vorbis_parse_setup_hdr (vorbis_context *vc)
static int vorbis_parse_id_hdr (vorbis_context *vc)
static av_cold int vorbis_decode_init (AVCodecContext *avccontext)
static av_always_inline int vorbis_residue_decode_internal (vorbis_context *vc, vorbis_residue *vr, unsigned ch, uint8_t *do_not_decode, float *vec, unsigned vlen, unsigned ch_left, int vr_type)
static int vorbis_residue_decode (vorbis_context *vc, vorbis_residue *vr, unsigned ch, uint8_t *do_not_decode, float *vec, unsigned vlen, unsigned ch_left)
void vorbis_inverse_coupling (float *mag, float *ang, int blocksize)
static int vorbis_parse_audio_packet (vorbis_context *vc)
static int vorbis_decode_frame (AVCodecContext *avccontext, void *data, int *got_frame_ptr, AVPacket *avpkt)
static av_cold int vorbis_decode_close (AVCodecContext *avccontext)

Variables

static const char idx_err_str [] = "Index value %d out of range (0 - %d) for %s at %s:%i\n"
AVCodec ff_vorbis_decoder

Detailed Description

Vorbis I decoder.

Author
Denes Balatoni ( dbalatoni programozo hu )

Definition in file vorbisdec.c.

Macro Definition Documentation

#define BARK (   x)    (13.1f * atan(0.00074f * (x)) + 2.24f * atan(1.85e-8f * (x) * (x)) + 1e-4f * (x))

Definition at line 160 of file vorbisdec.c.

Referenced by create_map().

#define BITSTREAM_READER_LE

Definition at line 28 of file vorbisdec.c.

#define GET_VALIDATED_INDEX (   idx,
  bits,
  limit 
)
#define V_MAX_PARTITIONS   (1 << 20)

Definition at line 42 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_residues().

#define V_MAX_VLCS   (1 << 16)

Definition at line 41 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_codebooks().

#define V_NB_BITS   8

Definition at line 39 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_codebooks().

#define V_NB_BITS2   11

Definition at line 40 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_codebooks().

#define VALIDATE_INDEX (   idx,
  limit 
)
Value:
if (idx >= limit) {\
av_log(vc->avccontext, AV_LOG_ERROR,\
(int)(idx), (int)(limit - 1), #idx, __FILE__, __LINE__);\
}

Definition at line 164 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_floors().

Typedef Documentation

typedef struct vorbis_floor0_s vorbis_floor0

Definition at line 57 of file vorbisdec.c.

typedef struct vorbis_floor1_s vorbis_floor1

Definition at line 58 of file vorbisdec.c.

typedef union vorbis_floor_u vorbis_floor_data

Definition at line 56 of file vorbisdec.c.

typedef int(* vorbis_floor_decode_func)(struct vorbis_context_s *, vorbis_floor_data *, float *)

Definition at line 62 of file vorbisdec.c.

Function Documentation

static void create_map ( vorbis_context vc,
unsigned  floor_number 
)
static

Definition at line 811 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_floors().

static av_cold int vorbis_decode_close ( AVCodecContext avccontext)
static

Definition at line 1702 of file vorbisdec.c.

static int vorbis_decode_frame ( AVCodecContext avccontext,
void data,
int *  got_frame_ptr,
AVPacket avpkt 
)
static

Definition at line 1644 of file vorbisdec.c.

static av_cold int vorbis_decode_init ( AVCodecContext avccontext)
static

Definition at line 980 of file vorbisdec.c.

static int vorbis_floor0_decode ( vorbis_context vc,
vorbis_floor_data vfu,
float *  vec 
)
static

Definition at line 1056 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_floors().

static int vorbis_floor1_decode ( vorbis_context vc,
vorbis_floor_data vfu,
float *  vec 
)
static

Definition at line 1162 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_floors().

static void vorbis_free ( vorbis_context vc)
static

Definition at line 189 of file vorbisdec.c.

Referenced by vorbis_decode_close(), and vorbis_decode_init().

void vorbis_inverse_coupling ( float *  mag,
float *  ang,
int  blocksize 
)

Definition at line 1460 of file vorbisdec.c.

Referenced by dsputil_init().

static int vorbis_parse_audio_packet ( vorbis_context vc)
static

Definition at line 1486 of file vorbisdec.c.

Referenced by vorbis_decode_frame().

static int vorbis_parse_id_hdr ( vorbis_context vc)
static

Definition at line 915 of file vorbisdec.c.

Referenced by vorbis_decode_init().

static int vorbis_parse_setup_hdr ( vorbis_context vc)
static

Definition at line 869 of file vorbisdec.c.

Referenced by vorbis_decode_init().

static int vorbis_parse_setup_hdr_codebooks ( vorbis_context vc)
static

Definition at line 235 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr().

static int vorbis_parse_setup_hdr_floors ( vorbis_context vc)
static

Definition at line 484 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr().

static int vorbis_parse_setup_hdr_mappings ( vorbis_context vc)
static

Definition at line 744 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr().

static int vorbis_parse_setup_hdr_modes ( vorbis_context vc)
static

Definition at line 842 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr().

static int vorbis_parse_setup_hdr_residues ( vorbis_context vc)
static

Definition at line 664 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr().

static int vorbis_parse_setup_hdr_tdtransforms ( vorbis_context vc)
static

Definition at line 458 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr().

static int vorbis_residue_decode ( vorbis_context vc,
vorbis_residue vr,
unsigned  ch,
uint8_t *  do_not_decode,
float *  vec,
unsigned  vlen,
unsigned  ch_left 
)
inlinestatic

Definition at line 1442 of file vorbisdec.c.

Referenced by vorbis_parse_audio_packet().

static av_always_inline int vorbis_residue_decode_internal ( vorbis_context vc,
vorbis_residue vr,
unsigned  ch,
uint8_t *  do_not_decode,
float *  vec,
unsigned  vlen,
unsigned  ch_left,
int  vr_type 
)
static

Definition at line 1288 of file vorbisdec.c.

Referenced by vorbis_residue_decode().

static float vorbisfloat2float ( unsigned  val)
static

Definition at line 177 of file vorbisdec.c.

Referenced by vorbis_parse_setup_hdr_codebooks().

Variable Documentation

AVCodec ff_vorbis_decoder
Initial value:
{
.name = "vorbis",
.priv_data_size = sizeof(vorbis_context),
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Vorbis"),
.channel_layouts = ff_vorbis_channel_layouts,
.sample_fmts = (const enum AVSampleFormat[]) {
},
}

Definition at line 1711 of file vorbisdec.c.

const char idx_err_str[] = "Index value %d out of range (0 - %d) for %s at %s:%i\n"
static

Definition at line 163 of file vorbisdec.c.