/*

  * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>

  *

  * This file is part of FFmpeg.
  *
  * FFmpeg 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.

  *

  * FFmpeg 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 FFmpeg; 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 int64_t ff_vorbis_channel_layouts[9];

 typedef struct {

     uint16_t x;
     uint16_t sort;
     uint16_t low;
     uint16_t high;

 } vorbis_floor1_entry;

 void ff_vorbis_ready_floor1_list(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 vorbis_inverse_coupling(float *mag, float *ang, int blocksize);

 
 #define ilog(i) av_log2(2*(i))

 #endif /* AVCODEC_VORBIS_H */