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50 lines
1.9 KiB
50 lines
1.9 KiB
/* |
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* copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_VORBIS_H |
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#define AVCODEC_VORBIS_H |
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#include "avcodec.h" |
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extern const float ff_vorbis_floor1_inverse_db_table[256]; |
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extern const float * const ff_vorbis_vwin[8]; |
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extern const uint8_t ff_vorbis_channel_layout_offsets[8][8]; |
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extern const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8]; |
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extern const uint64_t ff_vorbis_channel_layouts[9]; |
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typedef struct vorbis_floor1_entry { |
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uint16_t x; |
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uint16_t sort; |
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uint16_t low; |
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uint16_t high; |
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} vorbis_floor1_entry; |
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int ff_vorbis_ready_floor1_list(AVCodecContext *avctx, |
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vorbis_floor1_entry *list, int values); |
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unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n) |
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int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num); |
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void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values, |
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uint16_t *y_list, int *flag, |
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int multiplier, float * out, int samples); |
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void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize); |
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#define ilog(i) av_log2(2*(i)) |
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#endif /* AVCODEC_VORBIS_H */
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