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      1 /*
      2  * swapped_buffer.h - swapped buffer
      3  *
      4  *  Copyright (c) 2015 Intel Corporation
      5  *
      6  * Licensed under the Apache License, Version 2.0 (the "License");
      7  * you may not use this file except in compliance with the License.
      8  * You may obtain a copy of the License at
      9  *
     10  *      http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  * Unless required by applicable law or agreed to in writing, software
     13  * distributed under the License is distributed on an "AS IS" BASIS,
     14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  * See the License for the specific language governing permissions and
     16  * limitations under the License.
     17  *
     18  * Author: Wind Yuan <feng.yuan (at) intel.com>
     19  */
     20 
     21 #ifndef XCAM_SWAPPED_BUFFER_H
     22 #define XCAM_SWAPPED_BUFFER_H
     23 
     24 #include <xcam_std.h>
     25 #include <buffer_pool.h>
     26 
     27 namespace XCam {
     28 
     29 class SwappedBuffer
     30     : public virtual BufferProxy
     31 {
     32 public:
     33     enum SwapFlags {
     34         SwapNone = 0,
     35         SwapY    = 1,
     36         SwapUV   = 2,
     37     };
     38 
     39     enum SwapOffsets {
     40         SwapYOffset0 = 0,
     41         SwapYOffset1 = 1,
     42         SwapUVOffset0 = 2,
     43         SwapUVOffset1 = 3,
     44     };
     45 
     46     enum InitOrder {
     47         OrderYMask = 0x000F,
     48         OrderY0Y1 = 0x0001,
     49         OrderY1Y0 = 0x0002,
     50         OrderUVMask = 0x0F00,
     51         OrderUV0UV1 = 0x0100,
     52         OrderUV1UV0 = 0x0200,
     53     };
     54 
     55 protected:
     56     explicit SwappedBuffer (
     57         const VideoBufferInfo &info, const SmartPtr<BufferData> &data);
     58 
     59 public:
     60     virtual ~SwappedBuffer ();
     61     void set_swap_info (uint32_t flags, uint32_t* offsets);
     62 
     63     SmartPtr<SwappedBuffer> swap_clone (
     64         SmartPtr<SwappedBuffer> self, uint32_t flags);
     65 
     66 protected:
     67     virtual SmartPtr<SwappedBuffer> create_new_swap_buffer (
     68         const VideoBufferInfo &info, SmartPtr<BufferData> &data);
     69 
     70     bool swap_new_buffer_info (
     71         const VideoBufferInfo &in, uint32_t flags, VideoBufferInfo &out);
     72 
     73 private:
     74     XCAM_DEAD_COPY (SwappedBuffer);
     75 
     76 protected:
     77     uint32_t                   _swap_flags;
     78     uint32_t                   _swap_offsets[XCAM_VIDEO_MAX_COMPONENTS * 2];
     79 };
     80 
     81 }
     82 
     83 #endif //XCAM_SWAPPED_BUFFER_H
     84