51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/*
|
|
* copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_VORBIS_H
|
|
#define AVCODEC_VORBIS_H
|
|
|
|
#include "avcodec.h"
|
|
|
|
extern const float ff_vorbis_floor1_inverse_db_table[256];
|
|
extern const float * const ff_vorbis_vwin[8];
|
|
extern const uint8_t ff_vorbis_channel_layout_offsets[8][8];
|
|
extern const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8];
|
|
extern const uint64_t ff_vorbis_channel_layouts[9];
|
|
|
|
typedef struct vorbis_floor1_entry {
|
|
uint16_t x;
|
|
uint16_t sort;
|
|
uint16_t low;
|
|
uint16_t high;
|
|
} vorbis_floor1_entry;
|
|
|
|
int ff_vorbis_ready_floor1_list(AVCodecContext *avctx,
|
|
vorbis_floor1_entry *list, int values);
|
|
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n)
|
|
int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num);
|
|
void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values,
|
|
uint16_t *y_list, int *flag,
|
|
int multiplier, float * out, int samples);
|
|
void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize);
|
|
|
|
#define ilog(i) av_log2(2*(i))
|
|
|
|
#endif /* AVCODEC_VORBIS_H */
|