alloc_controller.h revision 513ddc2124abf90c63af41999201f0d2031af0c8 
1/*
2 * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
3
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *   * Redistributions of source code must retain the above copyright
8 *     notice, this list of conditions and the following disclaimer.
9 *   * Redistributions in binary form must reproduce the above
10 *     copyright notice, this list of conditions and the following
11 *     disclaimer in the documentation and/or other materials provided
12 *     with the distribution.
13 *   * Neither the name of The Linux Foundation nor the names of its
14 *     contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef GRALLOC_ALLOCCONTROLLER_H
30#define GRALLOC_ALLOCCONTROLLER_H
31
32namespace gralloc {
33
34struct alloc_data;
35class IMemAlloc;
36class IonAlloc;
37
38class IAllocController {
39
40    public:
41    /* Allocate using a suitable method
42     * Returns the type of buffer allocated
43     */
44    virtual int allocate(alloc_data& data, int usage) = 0;
45
46    virtual IMemAlloc* getAllocator(int flags) = 0;
47
48    virtual ~IAllocController() {};
49
50    static IAllocController* getInstance(void);
51
52    private:
53    static IAllocController* sController;
54
55};
56
57class IonController : public IAllocController {
58
59    public:
60    virtual int allocate(alloc_data& data, int usage);
61
62    virtual IMemAlloc* getAllocator(int flags);
63
64    IonController();
65
66    private:
67    IonAlloc* mIonAlloc;
68
69};
70} //end namespace gralloc
71#endif // GRALLOC_ALLOCCONTROLLER_H
72