1 /*
2  * Copyright (C) 2008 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_HARDWARE_ICAMERA_H
18 #define ANDROID_HARDWARE_ICAMERA_H
19 
20 #include <utils/RefBase.h>
21 #include <binder/IInterface.h>
22 #include <binder/Parcel.h>
23 #include <binder/IMemory.h>
24 #include <utils/String8.h>
25 #include <camera/Camera.h>
26 
27 namespace android {
28 
29 class ICameraClient;
30 class IGraphicBufferProducer;
31 class Surface;
32 
33 class ICamera: public IInterface
34 {
35     /**
36      * Keep up-to-date with ICamera.aidl in frameworks/base
37      */
38 public:
39     DECLARE_META_INTERFACE(Camera);
40 
41     virtual void            disconnect() = 0;
42 
43     // connect new client with existing camera remote
44     virtual status_t        connect(const sp<ICameraClient>& client) = 0;
45 
46     // prevent other processes from using this ICamera interface
47     virtual status_t        lock() = 0;
48 
49     // allow other processes to use this ICamera interface
50     virtual status_t        unlock() = 0;
51 
52     // pass the buffered IGraphicBufferProducer to the camera service
53     virtual status_t        setPreviewTarget(
54             const sp<IGraphicBufferProducer>& bufferProducer) = 0;
55 
56     // set the preview callback flag to affect how the received frames from
57     // preview are handled. Enabling preview callback flags disables any active
58     // preview callback surface set by setPreviewCallbackTarget().
59     virtual void            setPreviewCallbackFlag(int flag) = 0;
60     // set a buffer interface to use for client-received preview frames instead
61     // of preview callback buffers. Passing a valid interface here disables any
62     // active preview callbacks set by setPreviewCallbackFlag(). Passing NULL
63     // disables the use of the callback target.
64     virtual status_t        setPreviewCallbackTarget(
65             const sp<IGraphicBufferProducer>& callbackProducer) = 0;
66 
67     // start preview mode, must call setPreviewTarget first
68     virtual status_t        startPreview() = 0;
69 
70     // stop preview mode
71     virtual void            stopPreview() = 0;
72 
73     // get preview state
74     virtual bool            previewEnabled() = 0;
75 
76     // start recording mode
77     virtual status_t        startRecording() = 0;
78 
79     // stop recording mode
80     virtual void            stopRecording() = 0;
81 
82     // get recording state
83     virtual bool            recordingEnabled() = 0;
84 
85     // release a recording frame
86     virtual void            releaseRecordingFrame(const sp<IMemory>& mem) = 0;
87 
88     // auto focus
89     virtual status_t        autoFocus() = 0;
90 
91     // cancel auto focus
92     virtual status_t        cancelAutoFocus() = 0;
93 
94     /*
95      * take a picture.
96      * @param msgType the message type an application selectively turn on/off
97      * on a photo-by-photo basis. The supported message types are:
98      * CAMERA_MSG_SHUTTER, CAMERA_MSG_RAW_IMAGE, CAMERA_MSG_COMPRESSED_IMAGE,
99      * and CAMERA_MSG_POSTVIEW_FRAME. Any other message types will be ignored.
100      */
101     virtual status_t        takePicture(int msgType) = 0;
102 
103     // set preview/capture parameters - key/value pairs
104     virtual status_t        setParameters(const String8& params) = 0;
105 
106     // get preview/capture parameters - key/value pairs
107     virtual String8         getParameters() const = 0;
108 
109     // send command to camera driver
110     virtual status_t        sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) = 0;
111 
112     // tell the camera hal to store meta data or real YUV data in video buffers.
113     virtual status_t        storeMetaDataInBuffers(bool enabled) = 0;
114 };
115 
116 // ----------------------------------------------------------------------------
117 
118 class BnCamera: public BnInterface<ICamera>
119 {
120 public:
121     virtual status_t    onTransact( uint32_t code,
122                                     const Parcel& data,
123                                     Parcel* reply,
124                                     uint32_t flags = 0);
125 };
126 
127 }; // namespace android
128 
129 #endif
130