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      1 /*
      2  * soft_handler.h - soft image handler class
      3  *
      4  *  Copyright (c) 2017 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_SOFT_HANDLER_H
     22 #define XCAM_SOFT_HANDLER_H
     23 
     24 #include <xcam_std.h>
     25 #include <image_handler.h>
     26 #include <video_buffer.h>
     27 #include <worker.h>
     28 
     29 namespace XCam {
     30 
     31 class SoftHandler;
     32 class ThreadPool;
     33 class SyncMeta;
     34 class SoftWorker;
     35 
     36 struct SoftArgs
     37     : Worker::Arguments
     38 {
     39 private:
     40     SmartPtr<ImageHandler::Parameters> _param;
     41 public:
     42     explicit SoftArgs (const SmartPtr<ImageHandler::Parameters> &param = NULL) : _param (param) {}
     43     inline const SmartPtr<ImageHandler::Parameters> &get_param () const {
     44         return _param;
     45     }
     46     inline void set_param (const SmartPtr<ImageHandler::Parameters> &param) {
     47         _param = param;
     48         XCAM_ASSERT (param.ptr ());
     49     }
     50 };
     51 
     52 class SoftHandler
     53     : public ImageHandler
     54 {
     55 public:
     56     explicit SoftHandler (const char* name);
     57     ~SoftHandler ();
     58 
     59     bool set_threads (const SmartPtr<ThreadPool> &pool);
     60     bool set_out_video_info (const VideoBufferInfo &info);
     61     bool enable_allocator (bool enable);
     62 
     63     // derive from ImageHandler
     64     virtual XCamReturn execute_buffer (const SmartPtr<Parameters> &param, bool sync);
     65     virtual XCamReturn finish ();
     66     virtual XCamReturn terminate ();
     67 
     68 protected:
     69     virtual XCamReturn configure_resource (const SmartPtr<Parameters> &param) = 0;
     70     virtual XCamReturn start_work (const SmartPtr<Parameters> &param) = 0;
     71     //virtual SmartPtr<Worker::Arguments> get_first_worker_args (const SmartPtr<SoftWorker> &worker, SmartPtr<Parameters> &params) = 0;
     72     virtual void work_well_done (const SmartPtr<ImageHandler::Parameters> &param, XCamReturn err);
     73     virtual void work_broken (const SmartPtr<ImageHandler::Parameters> &param, XCamReturn err);
     74 
     75     //directly usage
     76     bool check_work_continue (const SmartPtr<ImageHandler::Parameters> &param, XCamReturn err);
     77 
     78 private:
     79     XCamReturn confirm_configured ();
     80     void param_ended (SmartPtr<ImageHandler::Parameters> param, XCamReturn err);
     81     static bool is_param_error (const SmartPtr<ImageHandler::Parameters> &param);
     82 
     83 private:
     84     XCAM_DEAD_COPY (SoftHandler);
     85 
     86 private:
     87     SmartPtr<ThreadPool>    _threads;
     88     VideoBufferInfo         _out_video_info;
     89     SmartPtr<SyncMeta>      _cur_sync;
     90     bool                    _need_configure;
     91     bool                    _enable_allocator;
     92     SafeList<Parameters>    _params;
     93     mutable std::atomic<int32_t>  _wip_buf_count;
     94 };
     95 
     96 }
     97 
     98 #endif //XCAM_SOFT_HANDLER_H
     99