| /* | |
| * 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 (const 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 (const 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__ */ |