FFmpeg
4.4.5
libavcodec
vorbis.h
Go to the documentation of this file.
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/*
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* copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VORBIS_H
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#define AVCODEC_VORBIS_H
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#include "
avcodec.h
"
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extern
const
float
ff_vorbis_floor1_inverse_db_table
[256];
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extern
const
float
*
const
ff_vorbis_vwin
[8];
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extern
const
uint8_t
ff_vorbis_channel_layout_offsets
[8][8];
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extern
const
uint64_t
ff_vorbis_channel_layouts
[9];
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typedef
struct
vorbis_floor1_entry
{
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uint16_t
x
;
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uint16_t
sort
;
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uint16_t
low
;
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uint16_t
high
;
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}
vorbis_floor1_entry
;
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int
ff_vorbis_ready_floor1_list
(
AVCodecContext
*avctx,
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vorbis_floor1_entry
*list,
int
values);
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unsigned
int
ff_vorbis_nth_root
(
unsigned
int
x,
unsigned
int
n);
// x^(1/n)
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int
ff_vorbis_len2vlc
(
uint8_t
*
bits
, uint32_t *codes,
unsigned
num);
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void
ff_vorbis_floor1_render_list
(
vorbis_floor1_entry
* list,
int
values,
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uint16_t *y_list,
int
*
flag
,
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int
multiplier,
float
*
out
,
int
samples);
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void
ff_vorbis_inverse_coupling
(
float
*mag,
float
*ang, intptr_t blocksize);
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#define ilog(i) av_log2(2*(i))
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#endif
/* AVCODEC_VORBIS_H */
uint8_t
uint8_t
Definition:
audio_convert.c:194
avcodec.h
Libavcodec external API header.
flag
#define flag(name)
Definition:
cbs_av1.c:564
AVCodecContext
main external API structure.
Definition:
avcodec.h:536
vorbis_floor1_entry
Definition:
vorbis.h:31
vorbis_floor1_entry::sort
uint16_t sort
Definition:
vorbis.h:33
vorbis_floor1_entry::x
uint16_t x
Definition:
vorbis.h:32
vorbis_floor1_entry::high
uint16_t high
Definition:
vorbis.h:35
vorbis_floor1_entry::low
uint16_t low
Definition:
vorbis.h:34
out
FILE * out
Definition:
movenc.c:54
ff_vorbis_ready_floor1_list
int ff_vorbis_ready_floor1_list(AVCodecContext *avctx, vorbis_floor1_entry *list, int values)
Definition:
vorbis.c:106
ff_vorbis_nth_root
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n)
Definition:
vorbis.c:38
ff_vorbis_channel_layout_offsets
const uint8_t ff_vorbis_channel_layout_offsets[8][8]
Definition:
vorbis_data.c:26
ff_vorbis_inverse_coupling
void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize)
Definition:
vorbisdec.c:1585
ff_vorbis_floor1_render_list
void ff_vorbis_floor1_render_list(vorbis_floor1_entry *list, int values, uint16_t *y_list, int *flag, int multiplier, float *out, int samples)
Definition:
vorbis.c:196
ff_vorbis_floor1_inverse_db_table
const float ff_vorbis_floor1_inverse_db_table[256]
Definition:
vorbis_data.c:2113
ff_vorbis_len2vlc
int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num)
Definition:
vorbis.c:56
ff_vorbis_channel_layouts
const uint64_t ff_vorbis_channel_layouts[9]
Definition:
vorbis_data.c:37
ff_vorbis_vwin
const float *const ff_vorbis_vwin[8]
Definition:
vorbis_data.c:2180
bits
uint8_t bits
Definition:
vp3data.h:141
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