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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (C) 2015 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_SERVERS_CAMERA_CAMERAFLASHLIGHT_H
#define ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H
#include "hardware/camera_common.h"
#include "utils/KeyedVector.h"
#include "gui/GLConsumer.h"
#include "gui/Surface.h"
#include "common/CameraDeviceBase.h"
namespace android {
/**
* FlashControlBase is a base class for flash control. It defines the functions
* that a flash control for each camera module/device version should implement.
*/
class FlashControlBase : public virtual VirtualLightRefBase {
public:
virtual ~FlashControlBase();
// Whether a camera device has a flash unit. Calling this function may
// cause the torch mode to be turned off in HAL v1 devices. If
// previously-on torch mode is turned off,
// callbacks.torch_mode_status_change() should be invoked.
virtual status_t hasFlashUnit(const String16& cameraId,
bool *hasFlash) = 0;
// set the torch mode to on or off.
virtual status_t setTorchMode(const String16& cameraId,
bool enabled) = 0;
};
/**
* CameraFlashlight can be used by camera service to control flashflight.
*/
class CameraFlashlight : public virtual VirtualLightRefBase {
public:
CameraFlashlight(CameraModule& cameraModule,
const camera_module_callbacks_t& callbacks);
virtual ~CameraFlashlight();
// set the torch mode to on or off.
status_t setTorchMode(const String16& cameraId, bool enabled);
// Whether a camera device has a flash unit. Calling this function may
// cause the torch mode to be turned off in HAL v1 devices.
bool hasFlashUnit(const String16& cameraId);
// Notify CameraFlashlight that camera service is going to open a camera
// device. CameraFlashlight will free the resources that may cause the
// camera open to fail. Camera service must call this function before
// opening a camera device.
status_t prepareDeviceOpen();
private:
// create flashlight control based on camera module API and camera
// device API versions.
status_t createFlashlightControl(const String16& cameraId);
sp<FlashControlBase> mFlashControl;
CameraModule *mCameraModule;
const camera_module_callbacks_t *mCallbacks;
Mutex mLock;
};
/**
* Flash control for camera module v2.4 and above.
*/
class FlashControl : public FlashControlBase {
public:
FlashControl(CameraModule& cameraModule,
const camera_module_callbacks_t& callbacks);
virtual ~FlashControl();
// FlashControlBase
status_t hasFlashUnit(const String16& cameraId, bool *hasFlash);
status_t setTorchMode(const String16& cameraId, bool enabled);
private:
CameraModule *mCameraModule;
Mutex mLock;
};
/**
* Flash control for camera module <= v2.3 and camera HAL v2-v3
*/
class CameraDeviceClientFlashControl : public FlashControlBase {
public:
CameraDeviceClientFlashControl(CameraModule& cameraModule,
const camera_module_callbacks_t& callbacks);
virtual ~CameraDeviceClientFlashControl();
// FlashControlBase
status_t setTorchMode(const String16& cameraId, bool enabled);
status_t hasFlashUnit(const String16& cameraId, bool *hasFlash);
private:
// connect to a camera device
status_t connectCameraDevice(const String16& cameraId);
// initialize a surface
status_t initializeSurface(int32_t width, int32_t height);
// submit a request with the given torch mode
status_t submitTorchRequest(bool enabled);
// get the smallest surface size of IMPLEMENTATION_DEFINED
status_t getSmallestSurfaceSize(const camera_info& info, int32_t *width,
int32_t *height);
status_t hasFlashUnitLocked(const String16& cameraId, bool *hasFlash);
CameraModule *mCameraModule;
const camera_module_callbacks_t *mCallbacks;
String16 mCameraId;
bool mTorchEnabled;
CameraMetadata *mMetadata;
sp<CameraDeviceBase> mDevice;
sp<IGraphicBufferProducer> mProducer;
sp<IGraphicBufferConsumer> mConsumer;
sp<GLConsumer> mSurfaceTexture;
sp<ANativeWindow> mAnw;
int32_t mStreamId;
Mutex mLock;
};
} // namespace android
#endif
|
