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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * copyright (c) 2006 Oded Shimon |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVCODEC_VORBIS_H |
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| 22 | #define AVCODEC_VORBIS_H |
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| 23 | |||
| 24 | #include "avcodec.h" |
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| 25 | |||
| 26 | extern const float ff_vorbis_floor1_inverse_db_table[256]; |
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| 27 | extern const float * const ff_vorbis_vwin[8]; |
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| 28 | extern const uint8_t ff_vorbis_channel_layout_offsets[8][8]; |
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| 29 | extern const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8]; |
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| 30 | extern const uint64_t ff_vorbis_channel_layouts[9]; |
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| 31 | |||
| 32 | typedef struct vorbis_floor1_entry { |
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| 33 | uint16_t x; |
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| 34 | uint16_t sort; |
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| 35 | uint16_t low; |
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| 36 | uint16_t high; |
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| 37 | } vorbis_floor1_entry; |
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| 38 | |||
| 39 | int ff_vorbis_ready_floor1_list(AVCodecContext *avctx, |
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| 40 | vorbis_floor1_entry *list, int values); |
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| 41 | unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n) |
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| 42 | int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num); |
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| 43 | void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values, |
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| 44 | uint16_t *y_list, int *flag, |
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| 45 | int multiplier, float * out, int samples); |
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| 46 | void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize); |
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| 47 | |||
| 48 | #define ilog(i) av_log2(2*(i)) |
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| 49 | |||
| 50 | #endif /* AVCODEC_VORBIS_H */ |