2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <dali/internal/common/image-sampler.h>
30 namespace ImageSampler
34 * Utility to store one of the sampling parameters values.
35 * @param[out] options A bitmask used to store the FilterMode values.
36 * @param[in] factor The FilterMode value.
37 * @param[in] bitshift Used to shift to the correct part of options.
39 void StoreSamplingParameter( unsigned int& options, unsigned int mode, int bitShift )
43 options |= ( mode << bitShift );
48 * Utility to retrieve one of the FilterMode values.
49 * @param[in] options A bitmask of filter values.
50 * @param[in] mask The used to mask unwanted values.
51 * @param[in] bitshift Used to shift to the correct part of options.
52 * @return Return the filter mode.
54 unsigned int RetrieveSamplingParameter( unsigned int options, int mask, int bitShift )
56 unsigned int index = options & mask;
58 index = ( index >> bitShift ); // Zero based index for array
62 unsigned int PackBitfield( FilterMode::Type minify, FilterMode::Type magnify, WrapMode::Type uWrap, WrapMode::Type vWrap )
64 unsigned int bitfield = 0;
65 StoreSamplingParameter( bitfield, minify, MINIFY_BIT_SHIFT );
66 StoreSamplingParameter( bitfield, magnify, MAGNIFY_BIT_SHIFT );
67 StoreSamplingParameter( bitfield, uWrap, UWRAP_BIT_SHIFT );
68 StoreSamplingParameter( bitfield, vWrap, VWRAP_BIT_SHIFT );
72 FilterMode::Type GetMinifyFilterMode( unsigned int bitfield )
74 return static_cast<FilterMode::Type>( RetrieveSamplingParameter( bitfield, MASK_MINIFY_FILTER, MINIFY_BIT_SHIFT ) );
77 FilterMode::Type GetMagnifyFilterMode( unsigned int bitfield )
79 return static_cast<FilterMode::Type>( RetrieveSamplingParameter( bitfield, MASK_MAGNIFY_FILTER, MAGNIFY_BIT_SHIFT ) );
82 WrapMode::Type GetUWrapMode( unsigned int bitfield )
84 return static_cast<WrapMode::Type>( RetrieveSamplingParameter( bitfield, MASK_UWRAP_MODE, UWRAP_BIT_SHIFT ) );
87 WrapMode::Type GetVWrapMode( unsigned int bitfield )
89 return static_cast<WrapMode::Type>( RetrieveSamplingParameter( bitfield, MASK_VWRAP_MODE, VWRAP_BIT_SHIFT ) );
92 } // namespace ImageSampler
94 } // namespace Internal