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/*
* Copyright (c) 2011 Apple Inc. All rights reserved.
*
* @APPLE_APACHE_LICENSE_HEADER_START@
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @APPLE_APACHE_LICENSE_HEADER_END@
*/
/*
File: dplib.h
Contains: Dynamic Predictor routines
Copyright: Copyright (C) 2001-2011 Apple, Inc.
*/
#ifndef __DPLIB_H__
#define __DPLIB_H__
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
// defines
#define DENSHIFT_MAX 15
#define DENSHIFT_DEFAULT 9
#define AINIT 38
#define BINIT (-29)
#define CINIT (-2)
#define NUMCOEPAIRS 16
// prototypes
void init_coefs( int16_t * coefs, uint32_t denshift, int32_t numPairs );
void copy_coefs( int16_t * srcCoefs, int16_t * dstCoefs, int32_t numPairs );
// NOTE: these routines read at least "numactive" samples so the i/o buffers must be at least that big
void pc_block( int32_t * in, int32_t * pc, int32_t num, int16_t * coefs, int32_t numactive, uint32_t chanbits, uint32_t denshift );
void unpc_block( int32_t * pc, int32_t * out, int32_t num, int16_t * coefs, int32_t numactive, uint32_t chanbits, uint32_t denshift );
#ifdef __cplusplus
}
#endif
#endif /* __DPLIB_H__ */
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