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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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
uint8_t
ff_vorbis_encoding_channel_layout_offsets
[8][8];
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extern
const
uint64_t
ff_vorbis_channel_layouts
[9];
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typedef
struct
{
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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
*avccontext,
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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
vorbis_inverse_coupling
(
float
*mag,
float
*ang,
int
blocksize);
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#define ilog(i) av_log2(2*(i))
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#endif
/* AVCODEC_VORBIS_H */
ff_vorbis_ready_floor1_list
int ff_vorbis_ready_floor1_list(AVCodecContext *avccontext, vorbis_floor1_entry *list, int values)
Definition:
vorbis.c:122
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:212
samples
static short * samples
Definition:
ffmpeg.c:233
ff_vorbis_floor1_inverse_db_table
const float ff_vorbis_floor1_inverse_db_table[256]
Definition:
vorbis_data.c:2123
vorbis_floor1_entry::sort
uint16_t sort
Definition:
vorbis.h:34
bits
uint8_t bits
Definition:
crc.c:31
vorbis_inverse_coupling
void vorbis_inverse_coupling(float *mag, float *ang, int blocksize)
Definition:
vorbisdec.c:1460
vorbis_floor1_entry::x
uint16_t x
Definition:
vorbis.h:33
ff_vorbis_encoding_channel_layout_offsets
const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8]
Definition:
vorbis_data.c:36
avcodec.h
external API header
AVCodecContext
main external API structure.
Definition:
avcodec.h:1329
ff_vorbis_channel_layouts
const uint64_t ff_vorbis_channel_layouts[9]
Definition:
vorbis_data.c:47
vorbis_floor1_entry::low
uint16_t low
Definition:
vorbis.h:35
ff_vorbis_len2vlc
int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num)
Definition:
vorbis.c:53
vorbis_floor1_entry::high
uint16_t high
Definition:
vorbis.h:36
ff_vorbis_vwin
const float *const ff_vorbis_vwin[8]
Definition:
vorbis_data.c:2190
ff_vorbis_channel_layout_offsets
const uint8_t ff_vorbis_channel_layout_offsets[8][8]
Definition:
vorbis_data.c:25
vorbis_floor1_entry
Definition:
vorbis.h:32
ff_vorbis_nth_root
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n)
Definition:
vorbis.c:35