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{
35    /**
36     * Keep up-to-date with ICamera.aidl in frameworks/base
37     */
38public:
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
118class BnCamera: public BnInterface<ICamera>
119{
120public:
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