| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #ifndef bbf_FUNCTIONS_EM_H |
| #define bbf_FUNCTIONS_EM_H |
| |
| /** |
| * This files contains gerneral purpose functions. |
| */ |
| |
| /* ---- includes ----------------------------------------------------------- */ |
| |
| #include "b_BasicEm/Context.h" |
| #include "b_TensorEm/Int16Rect.h" |
| #include "b_ImageEm/UInt32Image.h" |
| #include "b_ImageEm/UInt16ByteImage.h" |
| |
| /* ---- related objects --------------------------------------------------- */ |
| |
| /* ---- typedefs ----------------------------------------------------------- */ |
| |
| /* ---- constants ---------------------------------------------------------- */ |
| |
| /** table to quickly determine the number of set bits in an 8 bit variable */ |
| extern const uint16 bbf_bit8TblG[ 256 ]; |
| |
| /* ---- external functions ------------------------------------------------- */ |
| |
| /** sums up bits in 8 bit variable */ |
| #define bbf_BIT_SUM_8( vA ) ( bbf_bit8TblG[ vA ] ) |
| |
| /** sums up bits in 16 bit variable */ |
| #define bbf_BIT_SUM_16( vA ) ( bbf_bit8TblG[ vA & 0x00FF ] + bbf_bit8TblG[ ( vA >> 8 ) & 0x00FF ] ) |
| |
| /** sums up bits in 16 bit variable */ |
| #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 ] ) |
| |
| |
| #endif /* bbf_FUNCTIONS_EM_H */ |
| |