repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #ifndef AVCODEC_VORBIS_H | |
| 22 | #define AVCODEC_VORBIS_H | |
| 23 | ||
| 24 | #include "avcodec.h" | |
| 25 | ||
| 26 | extern const float ff_vorbis_floor1_inverse_db_table[256]; | |
| 27 | extern const float * const ff_vorbis_vwin[8]; | |
| 28 | extern const uint8_t ff_vorbis_channel_layout_offsets[8][8]; | |
| 29 | extern const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8]; | |
| 30 | extern const uint64_t ff_vorbis_channel_layouts[9]; | |
| 31 | ||
| 32 | typedef struct vorbis_floor1_entry { | |
| 33 | uint16_t x; | |
| 34 | uint16_t sort; | |
| 35 | uint16_t low; | |
| 36 | uint16_t high; | |
| 37 | } vorbis_floor1_entry; | |
| 38 | ||
| 39 | int ff_vorbis_ready_floor1_list(AVCodecContext *avctx, | |
| 40 | vorbis_floor1_entry *list, int values); | |
| 41 | unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n) | |
| 42 | int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num); | |
| 43 | void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values, | |
| 44 | uint16_t *y_list, int *flag, | |
| 45 | int multiplier, float * out, int samples); | |
| 46 | void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize); | |
| 47 | ||
| 48 | #define ilog(i) av_log2(2*(i)) | |
| 49 | ||
| 50 | #endif /* AVCODEC_VORBIS_H */ |