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      1 /*
      2  * cl_image_processor.h - CL image processor
      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_CL_IMAGE_PROCESSOR_H
     22 #define XCAM_CL_IMAGE_PROCESSOR_H
     23 
     24 #include <xcam_std.h>
     25 #include <image_processor.h>
     26 #include <ocl/priority_buffer_queue.h>
     27 #include <list>
     28 
     29 namespace XCam {
     30 
     31 class CLImageHandler;
     32 class CLContext;
     33 class CLHandlerThread;
     34 class CLBufferNotifyThread;
     35 
     36 class CLImageProcessor
     37     : public ImageProcessor
     38 {
     39 public:
     40     typedef std::list<SmartPtr<CLImageHandler>>  ImageHandlerList;
     41     typedef std::list<SmartPtr<PriorityBuffer>>  UnsafePriorityBufferList;
     42     friend class CLHandlerThread;
     43     friend class CLBufferNotifyThread;
     44 
     45 public:
     46     explicit CLImageProcessor (const char* name = NULL);
     47     virtual ~CLImageProcessor ();
     48 
     49     void keep_attached_buf (bool flag);
     50 
     51     bool add_handler (SmartPtr<CLImageHandler> &handler);
     52     ImageHandlerList::iterator handlers_begin ();
     53     ImageHandlerList::iterator handlers_end ();
     54 
     55 protected:
     56 
     57     //derive from ImageProcessor
     58     virtual bool can_process_result (SmartPtr<X3aResult> &result);
     59     virtual XCamReturn apply_3a_results (X3aResultList &results);
     60     virtual XCamReturn apply_3a_result (SmartPtr<X3aResult> &result);
     61     virtual XCamReturn process_buffer (SmartPtr<VideoBuffer> &input, SmartPtr<VideoBuffer> &output);
     62     virtual XCamReturn emit_start ();
     63     virtual void emit_stop ();
     64 
     65     SmartPtr<CLContext> get_cl_context ();
     66 
     67 private:
     68     virtual XCamReturn create_handlers ();
     69 
     70     XCamReturn process_cl_buffer_queue ();
     71     XCamReturn process_done_buffer ();
     72     uint32_t check_ready_buffers ();
     73 
     74     XCAM_DEAD_COPY (CLImageProcessor);
     75 
     76 protected:
     77 
     78 // STREAM_LOCK only used in class derived from CLImageProcessor
     79 #define STREAM_LOCK SmartLock stream_lock (this->_stream_mutex)
     80     // stream lock
     81     Mutex                          _stream_mutex;
     82 
     83 private:
     84     SmartPtr<CLContext>            _context;
     85     ImageHandlerList               _handlers;
     86     SmartPtr<CLHandlerThread>      _handler_thread;
     87     PriorityBufferQueue            _process_buffer_queue;
     88     UnsafePriorityBufferList       _not_ready_buffers;
     89     SmartPtr<CLBufferNotifyThread> _done_buf_thread;
     90     SafeList<VideoBuffer>          _done_buffer_queue;
     91     uint32_t                       _seq_num;
     92     bool                           _keep_attached_buffer;  //default false
     93     XCAM_OBJ_PROFILING_DEFINES;
     94 };
     95 
     96 };
     97 #endif //XCAM_CL_IMAGE_PROCESSOR_H
     98