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Diffstat (limited to 'contrib/ffmpeg/libavcodec/vorbis.h')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/vorbis.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/vorbis.h b/contrib/ffmpeg/libavcodec/vorbis.h new file mode 100644 index 000000000..cda909aa9 --- /dev/null +++ b/contrib/ffmpeg/libavcodec/vorbis.h @@ -0,0 +1,43 @@ +/* + * 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 VORBIS_H +#define VORBIS_H + +#include "avcodec.h" + +extern const float ff_vorbis_floor1_inverse_db_table[256]; +extern const float * ff_vorbis_vwin[8]; + +typedef struct { + uint_fast16_t x; + uint_fast16_t sort; + uint_fast16_t low; + uint_fast16_t high; +} floor1_entry_t; + +void ff_vorbis_ready_floor1_list(floor1_entry_t * 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, uint_fast32_t num); +void ff_vorbis_floor1_render_list(floor1_entry_t * list, int values, uint_fast16_t * y_list, int * flag, int multiplier, float * out, int samples); + +#define ilog(i) av_log2(2*(i)) + +#endif |