/*
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* worker.h - worker class interface
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*
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* Copyright (c) 2017 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Author: Wind Yuan <feng.yuan@intel.com>
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*/
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#ifndef XCAM_WORKER_H
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#define XCAM_WORKER_H
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#include <xcam_std.h>
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#define ENABLE_FUNC_OBJ 0
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#define DECLARE_WORK_CALLBACK(CbClass, Handler, mem_func) \
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class CbClass : public ::XCam::Worker::Callback { \
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private: ::XCam::SmartPtr<Handler> _h; \
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public: CbClass (const ::XCam::SmartPtr<Handler> &h) { _h = h;} \
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protected: void work_status ( \
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const ::XCam::SmartPtr<::XCam::Worker> &worker, \
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const ::XCam::SmartPtr<::XCam::Worker::Arguments> &args, \
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const XCamReturn error) { \
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_h->mem_func (worker, args, error); } \
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}
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namespace XCam {
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class Worker
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: public RefObj
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{
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public:
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struct Arguments
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{
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Arguments () {}
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virtual ~Arguments () {}
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XCAM_DEAD_COPY (Arguments);
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};
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class Callback {
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public:
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Callback () {}
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virtual ~Callback () {}
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virtual void work_status (
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const SmartPtr<Worker> &worker, const SmartPtr<Arguments> &args, const XCamReturn error) = 0;
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private:
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XCAM_DEAD_COPY (Callback);
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};
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#if ENABLE_FUNC_OBJ
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class FuncObj {
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public:
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virtual ~FuncObj () {}
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virtual XCamReturn impl (const SmartPtr<Arguments> &args) = 0;
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private:
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XCAM_DEAD_COPY (FuncObj);
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};
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#endif
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protected:
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explicit Worker (const char *name, const SmartPtr<Callback> &cb = NULL);
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public:
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virtual ~Worker ();
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bool set_name (const char *name);
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const char *get_name () const {
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return _name;
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}
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#if ENABLE_FUNC_OBJ
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bool set_func_obj (const SmartPtr<FuncObj> &obj);
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#endif
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bool set_callback (const SmartPtr<Callback> &callback);
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virtual XCamReturn work (const SmartPtr<Arguments> &args) = 0;
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virtual XCamReturn stop () = 0;
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protected:
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virtual void status_check (const SmartPtr<Arguments> &args, const XCamReturn error);
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private:
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XCAM_DEAD_COPY (Worker);
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private:
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char *_name;
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SmartPtr<Callback> _callback;
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#if ENABLE_FUNC_OBJ
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SmartPtr<FuncObj> _func_obj;
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#endif
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};
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}
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#endif //XCAM_WORKER_H
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