ICamera.h revision 3ee3550a2f529cbf56d87d8503f59a8f45dccf32 
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
27namespace android {
28
29class ICameraClient;
30class IGraphicBufferProducer;
31class Surface;
32
33class ICamera: public IInterface
34{
35public:
36    DECLARE_META_INTERFACE(Camera);
37
38    virtual void            disconnect() = 0;
39
40    // connect new client with existing camera remote
41    virtual status_t        connect(const sp<ICameraClient>& client) = 0;
42
43    // prevent other processes from using this ICamera interface
44    virtual status_t        lock() = 0;
45
46    // allow other processes to use this ICamera interface
47    virtual status_t        unlock() = 0;
48
49    // pass the buffered IGraphicBufferProducer to the camera service
50    virtual status_t        setPreviewTexture(
51            const sp<IGraphicBufferProducer>& bufferProducer) = 0;
52
53    // set the preview callback flag to affect how the received frames from
54    // preview are handled. Enabling preview callback flags disables any active
55    // preview callback surface set by setPreviewCallbackTarget().
56    virtual void            setPreviewCallbackFlag(int flag) = 0;
57    // set a buffer interface to use for client-received preview frames instead
58    // of preview callback buffers. Passing a valid interface here disables any
59    // active preview callbacks set by setPreviewCallbackFlag(). Passing NULL
60    // disables the use of the callback target.
61    virtual status_t        setPreviewCallbackTarget(
62            const sp<IGraphicBufferProducer>& callbackProducer) = 0;
63
64    // start preview mode, must call setPreviewDisplay first
65    virtual status_t        startPreview() = 0;
66
67    // stop preview mode
68    virtual void            stopPreview() = 0;
69
70    // get preview state
71    virtual bool            previewEnabled() = 0;
72
73    // start recording mode
74    virtual status_t        startRecording() = 0;
75
76    // stop recording mode
77    virtual void            stopRecording() = 0;
78
79    // get recording state
80    virtual bool            recordingEnabled() = 0;
81
82    // release a recording frame
83    virtual void            releaseRecordingFrame(const sp<IMemory>& mem) = 0;
84
85    // auto focus
86    virtual status_t        autoFocus() = 0;
87
88    // cancel auto focus
89    virtual status_t        cancelAutoFocus() = 0;
90
91    /*
92     * take a picture.
93     * @param msgType the message type an application selectively turn on/off
94     * on a photo-by-photo basis. The supported message types are:
95     * CAMERA_MSG_SHUTTER, CAMERA_MSG_RAW_IMAGE, CAMERA_MSG_COMPRESSED_IMAGE,
96     * and CAMERA_MSG_POSTVIEW_FRAME. Any other message types will be ignored.
97     */
98    virtual status_t        takePicture(int msgType) = 0;
99
100    // set preview/capture parameters - key/value pairs
101    virtual status_t        setParameters(const String8& params) = 0;
102
103    // get preview/capture parameters - key/value pairs
104    virtual String8         getParameters() const = 0;
105
106    // send command to camera driver
107    virtual status_t        sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) = 0;
108
109    // tell the camera hal to store meta data or real YUV data in video buffers.
110    virtual status_t        storeMetaDataInBuffers(bool enabled) = 0;
111};
112
113// ----------------------------------------------------------------------------
114
115class BnCamera: public BnInterface<ICamera>
116{
117public:
118    virtual status_t    onTransact( uint32_t code,
119                                    const Parcel& data,
120                                    Parcel* reply,
121                                    uint32_t flags = 0);
122};
123
124}; // namespace android
125
126#endif
127