xcore/file_handle.h

/*
 * file_handle.h - File handle
 *
 *  Copyright (c) 2016-2017 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Author: Yinhang Liu <yinhangx.liu@intel.com>
 * Author: Wind Yuan <feng.yuan@intel.com>
 */

#ifndef XCAM_FILE_HANDLE_H
#define XCAM_FILE_HANDLE_H

#include <xcam_std.h>

namespace XCam {

class FileHandle {
public:
    FileHandle ();
    explicit FileHandle (const char *name, const char *option);
    virtual ~FileHandle ();

    bool is_valid () const {
        return (_fp ? true : false);
    }
    bool end_of_file ();
    XCamReturn open (const char *name, const char *option);
    XCamReturn close ();
    XCamReturn rewind ();
    XCamReturn get_file_size (size_t &size);
    const char* get_file_name () const {
        return _file_name;
    }
    XCamReturn read_file (void *buf, const size_t &size);
    XCamReturn write_file (const void *buf, const size_t &size);

private:
    XCAM_DEAD_COPY (FileHandle);

protected:
    FILE    *_fp;

private:
    char    *_file_name;
    size_t   _file_size;
};

}

#endif //XCAM_FILE_HANDLE_H