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90 lines
3.4 KiB
90 lines
3.4 KiB
/************************************************************************
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* Copyright (C) 2002-2009, Xiph.org Foundation
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* Copyright (C) 2010, Robin Watts for Pinknoise Productions Ltd
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the names of the Xiph.org Foundation nor Pinknoise
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* Productions Ltd nor the names of its contributors may be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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************************************************************************
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function: basic shared codebook operations
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************************************************************************/
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#ifndef _V_CODEBOOK_H_
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#define _V_CODEBOOK_H_
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#include "ogg.h"
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typedef struct codebook{
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/* Top 15 used in ARM code */
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int dec_maxlength;
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void *dec_table;
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int dec_method;
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int dec_type; /* 0 = entry number
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1 = packed vector of values
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2 = packed vector of column offsets, maptype 1
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3 = scalar offset into value array, maptype 2 */
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int q_bits;
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long dim; /* codebook dimensions (elements per vector) */
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int q_delp;
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int q_minp;
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ogg_int32_t q_del;
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ogg_int32_t q_min;
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int q_seq;
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int q_pack;
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void *q_val;
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long used_entries; /* populated codebook entries */
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ogg_int32_t *dec_buf;
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/* C only */
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int dec_nodeb;
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int dec_leafw;
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long entries; /* codebook entries */
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} codebook;
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extern void vorbis_book_clear(codebook *b);
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extern int vorbis_book_unpack(oggpack_buffer *b,codebook *c);
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extern long vorbis_book_decode(codebook *book, oggpack_buffer *b);
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extern long vorbis_book_decodevs_add(codebook *book, ogg_int32_t *a,
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oggpack_buffer *b,int n,int point);
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extern long vorbis_book_decodev_set(codebook *book, ogg_int32_t *a,
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oggpack_buffer *b,int n,int point);
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extern long vorbis_book_decodev_add(codebook *book, ogg_int32_t *a,
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oggpack_buffer *b,int n,int point);
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extern long vorbis_book_decodevv_add(codebook *book, ogg_int32_t **a,
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long off,int ch,
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oggpack_buffer *b,int n,int point);
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extern int _ilog(unsigned int v);
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#endif
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