wrapper/gstreamer/bufmap.h

/*
 * bufmap.h - map V4l2Buffer to GstBuffer
 *
 *  Copyright (c) 2015 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: John Ye <john.ye@intel.com>
 */

#ifndef __BUFMAP_H__
#define __BUFMAP_H__

#include <gst/gst.h>
#include <map>
#include "xcam_defs.h"
#include "v4l2_buffer_proxy.h"
#include "atomisp_device.h"

namespace XCam {

class BufMap {
public:
    static SmartPtr<BufMap> instance();

    GstBuffer* gbuf(SmartPtr<V4l2BufferProxy> &buf) {
        uint32_t vbuf_idx = buf->get_v4l2_buf_index();
        if (_v2g.find(vbuf_idx) == _v2g.end()) { //non-existing
            return NULL;
        }
        return _v2g[vbuf_idx];
    }
    SmartPtr<V4l2BufferProxy> vbuf(GstBuffer* gbuf) {
        if (_g2v.find(gbuf) == _g2v.end()) { //non-existing
            return NULL;
        }
        return _g2v[gbuf];
    }
    void setmap(GstBuffer* gbuf, SmartPtr<V4l2BufferProxy>& buf) {
        //_g2v[gbuf] = buf;
        _v2g[buf->get_v4l2_buf_index()] = gbuf;
    }

private:
    XCAM_DEAD_COPY (BufMap);

private:
    BufMap() {};

    static SmartPtr<BufMap> _instance;
    static Mutex        _mutex;

    std::map <GstBuffer*, SmartPtr<V4l2BufferProxy> > _g2v;
    std::map <uint32_t, GstBuffer*> _v2g;
};

} //namespace

#endif // __BUFMAP_H__