| /* |
| * 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__ */ |
