/* * 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 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 *avccontext, 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, int blocksize); #define ilog(i) av_log2(2*(i)) #endif /* AVCODEC_VORBIS_H */