Camera2Client.h revision 2b07e0207da44d7b3cc63c369fd10c9f12a5e2cd 
1/*
2 * Copyright (C) 2012 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_SERVERS_CAMERA_CAMERA2CLIENT_H
18#define ANDROID_SERVERS_CAMERA_CAMERA2CLIENT_H
19
20#include "CameraService.h"
21#include "common/CameraDeviceBase.h"
22#include "common/Camera2ClientBase.h"
23#include "api1/client2/Parameters.h"
24#include "api1/client2/FrameProcessor.h"
25//#include "api1/client2/StreamingProcessor.h"
26//#include "api1/client2/JpegProcessor.h"
27//#include "api1/client2/ZslProcessorInterface.h"
28//#include "api1/client2/CaptureSequencer.h"
29//#include "api1/client2/CallbackProcessor.h"
30
31namespace android {
32
33namespace camera2 {
34
35class StreamingProcessor;
36class JpegProcessor;
37class ZslProcessorInterface;
38class CaptureSequencer;
39class CallbackProcessor;
40
41}
42
43class IMemory;
44/**
45 * Interface between android.hardware.Camera API and Camera HAL device for versions
46 * CAMERA_DEVICE_API_VERSION_2_0 and 3_0.
47 */
48class Camera2Client :
49        public Camera2ClientBase<CameraService::Client>
50{
51public:
52    /**
53     * ICamera interface (see ICamera for details)
54     */
55
56    virtual void            disconnect();
57    virtual status_t        connect(const sp<ICameraClient>& client);
58    virtual status_t        lock();
59    virtual status_t        unlock();
60    virtual status_t        setPreviewTarget(
61        const sp<IGraphicBufferProducer>& bufferProducer);
62    virtual void            setPreviewCallbackFlag(int flag);
63    virtual status_t        setPreviewCallbackTarget(
64        const sp<IGraphicBufferProducer>& callbackProducer);
65
66    virtual status_t        startPreview();
67    virtual void            stopPreview();
68    virtual bool            previewEnabled();
69    virtual status_t        storeMetaDataInBuffers(bool enabled);
70    virtual status_t        startRecording();
71    virtual void            stopRecording();
72    virtual bool            recordingEnabled();
73    virtual void            releaseRecordingFrame(const sp<IMemory>& mem);
74    virtual status_t        autoFocus();
75    virtual status_t        cancelAutoFocus();
76    virtual status_t        takePicture(int msgType);
77    virtual status_t        setParameters(const String8& params);
78    virtual String8         getParameters() const;
79    virtual status_t        sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
80
81    /**
82     * Interface used by CameraService
83     */
84
85    Camera2Client(const sp<CameraService>& cameraService,
86            const sp<ICameraClient>& cameraClient,
87            const String16& clientPackageName,
88            int cameraId,
89            int cameraFacing,
90            int clientPid,
91            uid_t clientUid,
92            int servicePid,
93            int deviceVersion);
94
95    virtual ~Camera2Client();
96
97    status_t initialize(camera_module_t *module);
98
99    virtual status_t dump(int fd, const Vector<String16>& args);
100
101    /**
102     * Interface used by CameraDeviceBase
103     */
104
105    virtual void notifyAutoFocus(uint8_t newState, int triggerId);
106    virtual void notifyAutoExposure(uint8_t newState, int triggerId);
107
108    /**
109     * Interface used by independent components of Camera2Client.
110     */
111
112    camera2::SharedParameters& getParameters();
113
114    int getPreviewStreamId() const;
115    int getCaptureStreamId() const;
116    int getCallbackStreamId() const;
117    int getRecordingStreamId() const;
118    int getZslStreamId() const;
119
120    status_t registerFrameListener(int32_t minId, int32_t maxId,
121            wp<camera2::FrameProcessor::FilteredListener> listener);
122    status_t removeFrameListener(int32_t minId, int32_t maxId,
123            wp<camera2::FrameProcessor::FilteredListener> listener);
124
125    status_t stopStream();
126
127    static size_t calculateBufferSize(int width, int height,
128            int format, int stride);
129
130    static const int32_t kPreviewRequestIdStart = 10000000;
131    static const int32_t kPreviewRequestIdEnd   = 20000000;
132
133    static const int32_t kRecordingRequestIdStart  = 20000000;
134    static const int32_t kRecordingRequestIdEnd    = 30000000;
135
136    static const int32_t kCaptureRequestIdStart = 30000000;
137    static const int32_t kCaptureRequestIdEnd   = 40000000;
138
139    // Constant strings for ATRACE logging
140    static const char* kAutofocusLabel;
141    static const char* kTakepictureLabel;
142
143private:
144    /** ICamera interface-related private members */
145    typedef camera2::Parameters Parameters;
146
147    status_t setPreviewWindowL(const sp<IBinder>& binder,
148            sp<ANativeWindow> window);
149    status_t startPreviewL(Parameters &params, bool restart);
150    void     stopPreviewL();
151    status_t startRecordingL(Parameters &params, bool restart);
152    bool     recordingEnabledL();
153
154    // Individual commands for sendCommand()
155    status_t commandStartSmoothZoomL();
156    status_t commandStopSmoothZoomL();
157    status_t commandSetDisplayOrientationL(int degrees);
158    status_t commandEnableShutterSoundL(bool enable);
159    status_t commandPlayRecordingSoundL();
160    status_t commandStartFaceDetectionL(int type);
161    status_t commandStopFaceDetectionL(Parameters &params);
162    status_t commandEnableFocusMoveMsgL(bool enable);
163    status_t commandPingL();
164    status_t commandSetVideoBufferCountL(size_t count);
165
166    // Current camera device configuration
167    camera2::SharedParameters mParameters;
168
169    /** Camera device-related private members */
170
171    void     setPreviewCallbackFlagL(Parameters &params, int flag);
172    status_t updateRequests(Parameters &params);
173    int mDeviceVersion;
174
175    // Used with stream IDs
176    static const int NO_STREAM = -1;
177
178    template <typename ProcessorT>
179    status_t updateProcessorStream(sp<ProcessorT> processor, Parameters params);
180    template <typename ProcessorT,
181              status_t (ProcessorT::*updateStreamF)(const Parameters &)>
182    status_t updateProcessorStream(sp<ProcessorT> processor, Parameters params);
183
184    sp<camera2::FrameProcessor> mFrameProcessor;
185
186    /* Preview/Recording related members */
187
188    sp<IBinder> mPreviewSurface;
189    sp<camera2::StreamingProcessor> mStreamingProcessor;
190
191    /** Preview callback related members */
192
193    sp<camera2::CallbackProcessor> mCallbackProcessor;
194
195    /* Still image capture related members */
196
197    sp<camera2::CaptureSequencer> mCaptureSequencer;
198    sp<camera2::JpegProcessor> mJpegProcessor;
199    sp<camera2::ZslProcessorInterface> mZslProcessor;
200    sp<Thread> mZslProcessorThread;
201
202    /** Notification-related members */
203
204    bool mAfInMotion;
205
206    /** Utility members */
207
208    // Wait until the camera device has received the latest control settings
209    status_t syncWithDevice();
210};
211
212}; // namespace android
213
214#endif
215