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 
32 namespace gralloc {
33 
34 struct alloc_data;
35 class IMemAlloc;
36 class IonAlloc;
37 
38 class 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 
~IAllocController()48     virtual ~IAllocController() {};
49 
50     static IAllocController* getInstance(void);
51 
52     private:
53     static IAllocController* sController;
54 
55 };
56 
57 class 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     void allocateIonMem();
69 
70 };
71 } //end namespace gralloc
72 #endif // GRALLOC_ALLOCCONTROLLER_H
73