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_CAMERA_H 18 #define ANDROID_HARDWARE_CAMERA_H 19 20 #include <utils/Timers.h> 21 22 #include <android/hardware/ICameraService.h> 23 24 #include <gui/IGraphicBufferProducer.h> 25 #include <system/camera.h> 26 #include <camera/ICameraRecordingProxy.h> 27 #include <camera/ICameraRecordingProxyListener.h> 28 #include <camera/android/hardware/ICamera.h> 29 #include <camera/android/hardware/ICameraClient.h> 30 #include <camera/CameraBase.h> 31 32 namespace android { 33 34 class Surface; 35 class String8; 36 class String16; 37 38 // ref-counted object for callbacks 39 class CameraListener: virtual public RefBase 40 { 41 public: 42 virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2) = 0; 43 virtual void postData(int32_t msgType, const sp<IMemory>& dataPtr, 44 camera_frame_metadata_t *metadata) = 0; 45 virtual void postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) = 0; 46 virtual void postRecordingFrameHandleTimestamp(nsecs_t timestamp, native_handle_t* handle) = 0; 47 }; 48 49 class Camera; 50 51 template <> 52 struct CameraTraits<Camera> 53 { 54 typedef CameraListener TCamListener; 55 typedef ::android::hardware::ICamera TCamUser; 56 typedef ::android::hardware::ICameraClient TCamCallbacks; 57 typedef ::android::binder::Status(::android::hardware::ICameraService::*TCamConnectService) 58 (const sp<::android::hardware::ICameraClient>&, 59 int, const String16&, int, int, 60 /*out*/ 61 sp<::android::hardware::ICamera>*); 62 static TCamConnectService fnConnectService; 63 }; 64 65 66 class Camera : 67 public CameraBase<Camera>, 68 public ::android::hardware::BnCameraClient 69 { 70 public: 71 enum { 72 USE_CALLING_UID = ::android::hardware::ICameraService::USE_CALLING_UID 73 }; 74 enum { 75 USE_CALLING_PID = ::android::hardware::ICameraService::USE_CALLING_PID 76 }; 77 78 // construct a camera client from an existing remote 79 static sp<Camera> create(const sp<::android::hardware::ICamera>& camera); 80 static sp<Camera> connect(int cameraId, 81 const String16& clientPackageName, 82 int clientUid, int clientPid); 83 84 static status_t connectLegacy(int cameraId, int halVersion, 85 const String16& clientPackageName, 86 int clientUid, sp<Camera>& camera); 87 88 virtual ~Camera(); 89 90 status_t reconnect(); 91 status_t lock(); 92 status_t unlock(); 93 94 // pass the buffered IGraphicBufferProducer to the camera service 95 status_t setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProducer); 96 97 // start preview mode, must call setPreviewTarget first 98 status_t startPreview(); 99 100 // stop preview mode 101 void stopPreview(); 102 103 // get preview state 104 bool previewEnabled(); 105 106 // start recording mode, must call setPreviewTarget first 107 status_t startRecording(); 108 109 // stop recording mode 110 void stopRecording(); 111 112 // get recording state 113 bool recordingEnabled(); 114 115 // release a recording frame 116 void releaseRecordingFrame(const sp<IMemory>& mem); 117 118 // release a recording frame handle 119 void releaseRecordingFrameHandle(native_handle_t *handle); 120 121 // autoFocus - status returned from callback 122 status_t autoFocus(); 123 124 // cancel auto focus 125 status_t cancelAutoFocus(); 126 127 // take a picture - picture returned from callback 128 status_t takePicture(int msgType); 129 130 // set preview/capture parameters - key/value pairs 131 status_t setParameters(const String8& params); 132 133 // get preview/capture parameters - key/value pairs 134 String8 getParameters() const; 135 136 // send command to camera driver 137 status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2); 138 139 // Tell camera how to pass video buffers. videoBufferMode is one of VIDEO_BUFFER_MODE_*. 140 // Returns OK if the specified video buffer mode is supported. If videoBufferMode is 141 // VIDEO_BUFFER_MODE_BUFFER_QUEUE, setVideoTarget() must be called before starting 142 // video recording. 143 status_t setVideoBufferMode(int32_t videoBufferMode); 144 145 // Set the video buffer producer for camera to use in VIDEO_BUFFER_MODE_BUFFER_QUEUE 146 // mode. 147 status_t setVideoTarget(const sp<IGraphicBufferProducer>& bufferProducer); 148 149 void setListener(const sp<CameraListener>& listener); 150 void setRecordingProxyListener(const sp<ICameraRecordingProxyListener>& listener); 151 152 // Configure preview callbacks to app. Only one of the older 153 // callbacks or the callback surface can be active at the same time; 154 // enabling one will disable the other if active. Flags can be 155 // disabled by calling it with CAMERA_FRAME_CALLBACK_FLAG_NOOP, and 156 // Target by calling it with a NULL interface. 157 void setPreviewCallbackFlags(int preview_callback_flag); 158 status_t setPreviewCallbackTarget( 159 const sp<IGraphicBufferProducer>& callbackProducer); 160 161 sp<ICameraRecordingProxy> getRecordingProxy(); 162 163 // ICameraClient interface 164 virtual void notifyCallback(int32_t msgType, int32_t ext, int32_t ext2); 165 virtual void dataCallback(int32_t msgType, const sp<IMemory>& dataPtr, 166 camera_frame_metadata_t *metadata); 167 virtual void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr); 168 virtual void recordingFrameHandleCallbackTimestamp(nsecs_t timestamp, native_handle_t* handle); 169 170 class RecordingProxy : public BnCameraRecordingProxy 171 { 172 public: 173 RecordingProxy(const sp<Camera>& camera); 174 175 // ICameraRecordingProxy interface 176 virtual status_t startRecording(const sp<ICameraRecordingProxyListener>& listener); 177 virtual void stopRecording(); 178 virtual void releaseRecordingFrame(const sp<IMemory>& mem); 179 virtual void releaseRecordingFrameHandle(native_handle_t* handle); 180 181 private: 182 sp<Camera> mCamera; 183 }; 184 185 protected: 186 Camera(int cameraId); 187 Camera(const Camera&); 188 Camera& operator=(const Camera); 189 190 sp<ICameraRecordingProxyListener> mRecordingProxyListener; 191 192 friend class CameraBase; 193 }; 194 195 }; // namespace android 196 197 #endif 198
