1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_UI_BUFFER_MAPPER_H
18 #define ANDROID_UI_BUFFER_MAPPER_H
19 
20 #include <stdint.h>
21 #include <sys/types.h>
22 
23 #include <utils/Singleton.h>
24 
25 #include <hardware/gralloc.h>
26 
27 
28 struct gralloc_module_t;
29 
30 namespace android {
31 
32 // ---------------------------------------------------------------------------
33 
34 class Rect;
35 
36 class GraphicBufferMapper : public Singleton<GraphicBufferMapper>
37 {
38 public:
get()39     static inline GraphicBufferMapper& get() { return getInstance(); }
40 
41     status_t registerBuffer(buffer_handle_t handle);
42 
43     status_t unregisterBuffer(buffer_handle_t handle);
44 
45     status_t lock(buffer_handle_t handle,
46             uint32_t usage, const Rect& bounds, void** vaddr);
47 
48     status_t lockYCbCr(buffer_handle_t handle,
49             uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr);
50 
51     status_t unlock(buffer_handle_t handle);
52 
53     status_t lockAsync(buffer_handle_t handle,
54             uint32_t usage, const Rect& bounds, void** vaddr, int fenceFd);
55 
56     status_t lockAsyncYCbCr(buffer_handle_t handle,
57             uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr,
58             int fenceFd);
59 
60     status_t unlockAsync(buffer_handle_t handle, int *fenceFd);
61 
62     // dumps information about the mapping of this handle
63     void dump(buffer_handle_t handle);
64 
65 private:
66     friend class Singleton<GraphicBufferMapper>;
67     GraphicBufferMapper();
68     gralloc_module_t const *mAllocMod;
69 };
70 
71 // ---------------------------------------------------------------------------
72 
73 }; // namespace android
74 
75 #endif // ANDROID_UI_BUFFER_MAPPER_H
76 
77