| The Android Open Source Project | 30957f5 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef bbf_FUNCTIONS_EM_H |
| 18 | #define bbf_FUNCTIONS_EM_H |
| 19 | |
| 20 | /** |
| 21 | * This files contains gerneral purpose functions. |
| 22 | */ |
| 23 | |
| 24 | /* ---- includes ----------------------------------------------------------- */ |
| 25 | |
| 26 | #include "b_BasicEm/Context.h" |
| 27 | #include "b_TensorEm/Int16Rect.h" |
| 28 | #include "b_ImageEm/UInt32Image.h" |
| 29 | #include "b_ImageEm/UInt16ByteImage.h" |
| 30 | |
| 31 | /* ---- related objects --------------------------------------------------- */ |
| 32 | |
| 33 | /* ---- typedefs ----------------------------------------------------------- */ |
| 34 | |
| 35 | /* ---- constants ---------------------------------------------------------- */ |
| 36 | |
| 37 | /** table to quickly determine the number of set bits in an 8 bit variable */ |
| 38 | extern const uint16 bbf_bit8TblG[ 256 ]; |
| 39 | |
| 40 | /* ---- external functions ------------------------------------------------- */ |
| 41 | |
| 42 | /** sums up bits in 8 bit variable */ |
| 43 | #define bbf_BIT_SUM_8( vA ) ( bbf_bit8TblG[ vA ] ) |
| 44 | |
| 45 | /** sums up bits in 16 bit variable */ |
| 46 | #define bbf_BIT_SUM_16( vA ) ( bbf_bit8TblG[ vA & 0x00FF ] + bbf_bit8TblG[ ( vA >> 8 ) & 0x00FF ] ) |
| 47 | |
| 48 | /** sums up bits in 16 bit variable */ |
| 49 | #define bbf_BIT_SUM_32( vA ) ( bbf_bit8TblG[ vA & 0x00FF ] + bbf_bit8TblG[ ( vA >> 8 ) & 0x00FF ] + bbf_bit8TblG[ ( vA >> 16 ) & 0x00FF ] + bbf_bit8TblG[ ( vA >> 24 ) & 0x00FF ] ) |
| 50 | |
| 51 | |
| 52 | #endif /* bbf_FUNCTIONS_EM_H */ |
| 53 | |