yading@10: /*
yading@10:  * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_VORBIS_H
yading@10: #define AVCODEC_VORBIS_H
yading@10: 
yading@10: #include "avcodec.h"
yading@10: 
yading@10: extern const float ff_vorbis_floor1_inverse_db_table[256];
yading@10: extern const float * const ff_vorbis_vwin[8];
yading@10: extern const uint8_t ff_vorbis_channel_layout_offsets[8][8];
yading@10: extern const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8];
yading@10: extern const uint64_t ff_vorbis_channel_layouts[9];
yading@10: 
yading@10: typedef struct vorbis_floor1_entry {
yading@10:     uint16_t x;
yading@10:     uint16_t sort;
yading@10:     uint16_t low;
yading@10:     uint16_t high;
yading@10: } vorbis_floor1_entry;
yading@10: 
yading@10: int ff_vorbis_ready_floor1_list(AVCodecContext *avctx,
yading@10:                                 vorbis_floor1_entry *list, int values);
yading@10: unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n)
yading@10: int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num);
yading@10: void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values,
yading@10:                                   uint16_t *y_list, int *flag,
yading@10:                                   int multiplier, float * out, int samples);
yading@10: void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize);
yading@10: 
yading@10: #define ilog(i) av_log2(2*(i))
yading@10: 
yading@10: #endif /* AVCODEC_VORBIS_H */