1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Copyright (C) 2007 The Android Open Source Project
*
* 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.
*/
#ifndef ANDROID_OVERLAY_H
#define ANDROID_OVERLAY_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <utils/RefBase.h>
#include <utils/threads.h>
#include <ui/PixelFormat.h>
#include <ui/IOverlay.h>
#include <hardware/overlay.h>
namespace android {
class IMemory;
class IMemoryHeap;
// ----------------------------------------------------------------------------
class OverlayRef : public LightRefBase<OverlayRef>
{
public:
OverlayRef(overlay_handle_t, const sp<IOverlay>&,
uint32_t w, uint32_t h, int32_t f, uint32_t ws, uint32_t hs);
static sp<OverlayRef> readFromParcel(const Parcel& data);
static status_t writeToParcel(Parcel* reply, const sp<OverlayRef>& o);
private:
friend class LightRefBase<OverlayRef>;
friend class Overlay;
OverlayRef();
virtual ~OverlayRef();
overlay_handle_t mOverlayHandle;
sp<IOverlay> mOverlayChannel;
uint32_t mWidth;
uint32_t mHeight;
int32_t mFormat;
int32_t mWidthStride;
int32_t mHeightStride;
bool mOwnHandle;
};
// ----------------------------------------------------------------------------
class Overlay : public virtual RefBase
{
public:
Overlay(const sp<OverlayRef>& overlayRef);
/* destroys this overlay */
void destroy();
/* get the HAL handle for this overlay */
overlay_handle_t getHandleRef() const;
/* blocks until an overlay buffer is available and return that buffer. */
status_t dequeueBuffer(overlay_buffer_t* buffer);
/* release the overlay buffer and post it */
status_t queueBuffer(overlay_buffer_t buffer);
/* change the width and height of the overlay */
status_t resizeInput(uint32_t width, uint32_t height);
status_t setCrop(uint32_t x, uint32_t y, uint32_t w, uint32_t h) ;
status_t getCrop(uint32_t* x, uint32_t* y, uint32_t* w, uint32_t* h) ;
/* set the buffer attributes */
status_t setParameter(int param, int value);
/* returns the address of a given buffer if supported, NULL otherwise. */
void* getBufferAddress(overlay_buffer_t buffer);
/* get physical informations about the overlay */
uint32_t getWidth() const;
uint32_t getHeight() const;
int32_t getFormat() const;
int32_t getWidthStride() const;
int32_t getHeightStride() const;
int32_t getBufferCount() const;
status_t getStatus() const;
private:
virtual ~Overlay();
sp<OverlayRef> mOverlayRef;
overlay_data_device_t *mOverlayData;
status_t mStatus;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_OVERLAY_H
|
