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vorbis.h
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1 /*
2  * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVCODEC_VORBIS_H
22 #define AVCODEC_VORBIS_H
23 
24 #include "avcodec.h"
25 
26 extern const float ff_vorbis_floor1_inverse_db_table[256];
27 extern const float * const ff_vorbis_vwin[8];
28 extern const uint8_t ff_vorbis_channel_layout_offsets[8][8];
30 extern const uint64_t ff_vorbis_channel_layouts[9];
31 
32 typedef struct vorbis_floor1_entry {
33  uint16_t x;
34  uint16_t sort;
35  uint16_t low;
36  uint16_t high;
38 
40  vorbis_floor1_entry *list, int values);
41 unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n)
42 int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num);
44  uint16_t *y_list, int *flag,
45  int multiplier, float * out, int samples);
46 void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize);
47 
48 #define ilog(i) av_log2(2*(i))
49 
50 #endif /* AVCODEC_VORBIS_H */
int ff_vorbis_ready_floor1_list(AVCodecContext *avctx, vorbis_floor1_entry *list, int values)
Definition: vorbis.c:106
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
int flag
Definition: cpu.c:34
const float ff_vorbis_floor1_inverse_db_table[256]
Definition: vorbis_data.c:2123
uint16_t sort
Definition: vorbis.h:34
uint8_t bits
Definition: crc.c:296
uint8_t
uint16_t x
Definition: vorbis.h:33
int n
Definition: avisynth_c.h:684
const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8]
Definition: vorbis_data.c:36
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1682
const uint64_t ff_vorbis_channel_layouts[9]
Definition: vorbis_data.c:47
uint16_t low
Definition: vorbis.h:35
int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num)
Definition: vorbis.c:56
uint16_t high
Definition: vorbis.h:36
const float *const ff_vorbis_vwin[8]
Definition: vorbis_data.c:2190
void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize)
Definition: vorbisdec.c:1549
FILE * out
Definition: movenc.c:54
const uint8_t ff_vorbis_channel_layout_offsets[8][8]
Definition: vorbis_data.c:25
Definition: vorbis.h:32
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n)
Definition: vorbis.c:38