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/**
* Flake: FLAC audio encoder
* Copyright (c) 2006 Justin Ruggles
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rice.h
* Functions for calculating optimal partition order and Rice parameters
*/
#ifndef RICE_H
#define RICE_H
#include "common.h"
#define MAX_RICE_PARAM 14
#define MAX_PARTITION_ORDER 8
#define MAX_PARTITIONS (1 << MAX_PARTITION_ORDER)
typedef struct RiceContext {
int porder; /* partition order */
int params[MAX_PARTITIONS]; /* Rice parameters */
int esc_bps[MAX_PARTITIONS]; /* bps if using escape code */
} RiceContext;
#define rice_encode_count(sum, n, k) (((n)*((k)+1))+(((sum)-(n>>1))>>(k)))
extern int find_optimal_rice_param(uint32_t sum, int n);
extern uint32_t calc_rice_params_fixed(RiceContext *rc, int pmin, int pmax,
int32_t *data, int n, int pred_order,
int bps);
extern uint32_t calc_rice_params_lpc(RiceContext *rc, int pmin, int pmax,
int32_t *data, int n, int pred_order,
int bps, int precision);
#endif /* RICE_H */
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