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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
* 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 "utils/SortedVector.h"
#include "gui/GLConsumer.h"
#include "gui/Surface.h"
#include "common/CameraDeviceBase.h"
#include "device1/CameraHardwareInterface.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 String8& cameraId,
bool *hasFlash) = 0;
// set the torch mode to on or off.
virtual status_t setTorchMode(const String8& 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();
// Find all flash units. This must be called before other methods. All
// camera devices must be closed when it's called because HAL v1 devices
// need to be opened to query available flash modes.
status_t findFlashUnits();
// Whether a camera device has a flash unit. Before findFlashUnits() is
// called, this function always returns false.
bool hasFlashUnit(const String8& cameraId);
// set the torch mode to on or off.
status_t setTorchMode(const String8& cameraId, bool enabled);
// 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(const String8& cameraId);
// Notify CameraFlashlight that camera service has closed a camera
// device. CameraFlashlight may invoke callbacks for torch mode
// available depending on the implementation.
status_t deviceClosed(const String8& cameraId);
private:
// create flashlight control based on camera module API and camera
// device API versions.
status_t createFlashlightControl(const String8& cameraId);
// mLock should be locked.
bool hasFlashUnitLocked(const String8& cameraId);
sp<FlashControlBase> mFlashControl;
CameraModule *mCameraModule;
const camera_module_callbacks_t *mCallbacks;
SortedVector<String8> mOpenedCameraIds;
// camera id -> if it has a flash unit
KeyedVector<String8, bool> mHasFlashlightMap;
bool mFlashlightMapInitialized;
Mutex mLock; // protect CameraFlashlight API
};
/**
* Flash control for camera module v2.4 and above.
*/
class ModuleFlashControl : public FlashControlBase {
public:
ModuleFlashControl(CameraModule& cameraModule,
const camera_module_callbacks_t& callbacks);
virtual ~ModuleFlashControl();
// FlashControlBase
status_t hasFlashUnit(const String8& cameraId, bool *hasFlash);
status_t setTorchMode(const String8& 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 String8& cameraId, bool enabled);
status_t hasFlashUnit(const String8& cameraId, bool *hasFlash);
private:
// connect to a camera device
status_t connectCameraDevice(const String8& cameraId);
// disconnect and free mDevice
status_t disconnectCameraDevice();
// initialize a surface
status_t initializeSurface(sp<CameraDeviceBase>& device, int32_t width,
int32_t height);
// submit a request to enable the torch mode
status_t submitTorchEnabledRequest();
// get the smallest surface size of IMPLEMENTATION_DEFINED
status_t getSmallestSurfaceSize(const camera_info& info, int32_t *width,
int32_t *height);
// protected by mLock
status_t hasFlashUnitLocked(const String8& cameraId, bool *hasFlash);
CameraModule *mCameraModule;
const camera_module_callbacks_t *mCallbacks;
String8 mCameraId;
bool mTorchEnabled;
CameraMetadata *mMetadata;
// WORKAROUND: will be set to true for HAL v2 devices where
// setStreamingRequest() needs to be call for torch mode settings to
// take effect.
bool mStreaming;
sp<CameraDeviceBase> mDevice;
sp<IGraphicBufferProducer> mProducer;
sp<IGraphicBufferConsumer> mConsumer;
sp<GLConsumer> mSurfaceTexture;
sp<ANativeWindow> mAnw;
int32_t mStreamId;
Mutex mLock;
};
/**
* Flash control for camera module <= v2.3 and camera HAL v1
*/
class CameraHardwareInterfaceFlashControl : public FlashControlBase {
public:
CameraHardwareInterfaceFlashControl(CameraModule& cameraModule,
const camera_module_callbacks_t& callbacks);
virtual ~CameraHardwareInterfaceFlashControl();
// FlashControlBase
status_t setTorchMode(const String8& cameraId, bool enabled);
status_t hasFlashUnit(const String8& cameraId, bool *hasFlash);
private:
// connect to a camera device
status_t connectCameraDevice(const String8& cameraId);
// disconnect and free mDevice
status_t disconnectCameraDevice();
// initialize the preview window
status_t initializePreviewWindow(sp<CameraHardwareInterface> device,
int32_t width, int32_t height);
// start preview and enable torch
status_t startPreviewAndTorch();
// get the smallest surface
status_t getSmallestSurfaceSize(int32_t *width, int32_t *height);
// protected by mLock
status_t hasFlashUnitLocked(const String8& cameraId, bool *hasFlash);
CameraModule *mCameraModule;
const camera_module_callbacks_t *mCallbacks;
sp<CameraHardwareInterface> mDevice;
String8 mCameraId;
CameraParameters mParameters;
bool mTorchEnabled;
sp<IGraphicBufferProducer> mProducer;
sp<IGraphicBufferConsumer> mConsumer;
sp<GLConsumer> mSurfaceTexture;
sp<ANativeWindow> mAnw;
Mutex mLock;
};
} // namespace android
#endif
|
