The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | ** |
| 3 | ** Copyright (C) 2008, The Android Open Source Project |
| 4 | ** Copyright (C) 2008 HTC Inc. |
| 5 | ** |
| 6 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | ** you may not use this file except in compliance with the License. |
| 8 | ** You may obtain a copy of the License at |
| 9 | ** |
| 10 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | ** |
| 12 | ** Unless required by applicable law or agreed to in writing, software |
| 13 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | ** See the License for the specific language governing permissions and |
| 16 | ** limitations under the License. |
| 17 | */ |
| 18 | |
| 19 | #ifndef ANDROID_SERVERS_CAMERA_CAMERASERVICE_H |
| 20 | #define ANDROID_SERVERS_CAMERA_CAMERASERVICE_H |
| 21 | |
Mathias Agopian | 000479f | 2010-02-09 17:46:37 -0800 | [diff] [blame] | 22 | #include <camera/ICameraService.h> |
| 23 | #include <camera/CameraHardwareInterface.h> |
| 24 | #include <camera/Camera.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 25 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 26 | namespace android { |
| 27 | |
Dave Sparks | dd158c9 | 2009-10-15 10:02:22 -0700 | [diff] [blame] | 28 | class MemoryHeapBase; |
Jason Sams | b18b691 | 2009-03-24 20:21:36 -0700 | [diff] [blame] | 29 | class MediaPlayer; |
| 30 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 31 | // ---------------------------------------------------------------------------- |
| 32 | |
| 33 | #define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) |
| 34 | #define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) |
| 35 | |
| 36 | // When enabled, this feature allows you to send an event to the CameraService |
| 37 | // so that you can cause all references to the heap object gWeakHeap, defined |
| 38 | // below, to be printed. You will also need to set DEBUG_REFS=1 and |
| 39 | // DEBUG_REFS_ENABLED_BY_DEFAULT=0 in libutils/RefBase.cpp. You just have to |
| 40 | // set gWeakHeap to the appropriate heap you want to track. |
| 41 | |
| 42 | #define DEBUG_HEAP_LEAKS 0 |
| 43 | |
| 44 | // ---------------------------------------------------------------------------- |
| 45 | |
| 46 | class CameraService : public BnCameraService |
| 47 | { |
| 48 | class Client; |
| 49 | |
| 50 | public: |
| 51 | static void instantiate(); |
| 52 | |
| 53 | // ICameraService interface |
| 54 | virtual sp<ICamera> connect(const sp<ICameraClient>& cameraClient); |
| 55 | |
| 56 | virtual status_t dump(int fd, const Vector<String16>& args); |
| 57 | |
| 58 | void removeClient(const sp<ICameraClient>& cameraClient); |
| 59 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 60 | virtual status_t onTransact( |
| 61 | uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 62 | |
| 63 | private: |
| 64 | |
| 65 | // ---------------------------------------------------------------------------- |
| 66 | |
| 67 | class Client : public BnCamera { |
| 68 | |
| 69 | public: |
| 70 | virtual void disconnect(); |
| 71 | |
| 72 | // connect new client with existing camera remote |
| 73 | virtual status_t connect(const sp<ICameraClient>& client); |
| 74 | |
| 75 | // prevent other processes from using this ICamera interface |
| 76 | virtual status_t lock(); |
| 77 | |
| 78 | // allow other processes to use this ICamera interface |
| 79 | virtual status_t unlock(); |
| 80 | |
| 81 | // pass the buffered ISurface to the camera service |
| 82 | virtual status_t setPreviewDisplay(const sp<ISurface>& surface); |
| 83 | |
| 84 | // set the preview callback flag to affect how the received frames from |
| 85 | // preview are handled. |
| 86 | virtual void setPreviewCallbackFlag(int callback_flag); |
| 87 | |
| 88 | // start preview mode, must call setPreviewDisplay first |
| 89 | virtual status_t startPreview(); |
| 90 | |
| 91 | // stop preview mode |
| 92 | virtual void stopPreview(); |
| 93 | |
| 94 | // get preview state |
| 95 | virtual bool previewEnabled(); |
| 96 | |
| 97 | // start recording mode |
| 98 | virtual status_t startRecording(); |
| 99 | |
| 100 | // stop recording mode |
| 101 | virtual void stopRecording(); |
| 102 | |
| 103 | // get recording state |
| 104 | virtual bool recordingEnabled(); |
| 105 | |
| 106 | // release a recording frame |
| 107 | virtual void releaseRecordingFrame(const sp<IMemory>& mem); |
| 108 | |
| 109 | // auto focus |
| 110 | virtual status_t autoFocus(); |
| 111 | |
Chih-Chung Chang | 244f8c2 | 2009-09-15 14:51:56 +0800 | [diff] [blame] | 112 | // cancel auto focus |
| 113 | virtual status_t cancelAutoFocus(); |
| 114 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 115 | // take a picture - returns an IMemory (ref-counted mmap) |
| 116 | virtual status_t takePicture(); |
| 117 | |
| 118 | // set preview/capture parameters - key/value pairs |
| 119 | virtual status_t setParameters(const String8& params); |
| 120 | |
| 121 | // get preview/capture parameters - key/value pairs |
| 122 | virtual String8 getParameters() const; |
| 123 | |
Wu-cheng Li | 36f68b8 | 2009-09-28 16:14:58 -0700 | [diff] [blame] | 124 | // send command to camera driver |
| 125 | virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2); |
| 126 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 127 | // our client... |
| 128 | const sp<ICameraClient>& getCameraClient() const { return mCameraClient; } |
| 129 | |
| 130 | private: |
| 131 | friend class CameraService; |
| 132 | Client(const sp<CameraService>& cameraService, |
| 133 | const sp<ICameraClient>& cameraClient, |
| 134 | pid_t clientPid); |
| 135 | Client(); |
| 136 | virtual ~Client(); |
| 137 | |
| 138 | status_t checkPid(); |
| 139 | |
Benny Wong | da83f46 | 2009-08-12 12:01:27 -0500 | [diff] [blame] | 140 | static void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2, void* user); |
| 141 | static void dataCallback(int32_t msgType, const sp<IMemory>& dataPtr, void* user); |
| 142 | static void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, |
| 143 | const sp<IMemory>& dataPtr, void* user); |
| 144 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 145 | static sp<Client> getClientFromCookie(void* user); |
| 146 | |
Benny Wong | da83f46 | 2009-08-12 12:01:27 -0500 | [diff] [blame] | 147 | void handlePreviewData(const sp<IMemory>&); |
Wu-cheng Li | 4cb04c4 | 2009-10-23 17:39:46 +0800 | [diff] [blame] | 148 | void handleShutter(image_rect_type *image); |
Benny Wong | da83f46 | 2009-08-12 12:01:27 -0500 | [diff] [blame] | 149 | void handlePostview(const sp<IMemory>&); |
| 150 | void handleRawPicture(const sp<IMemory>&); |
| 151 | void handleCompressedPicture(const sp<IMemory>&); |
| 152 | |
Dave Sparks | dd158c9 | 2009-10-15 10:02:22 -0700 | [diff] [blame] | 153 | void copyFrameAndPostCopiedFrame(const sp<ICameraClient>& client, |
| 154 | const sp<IMemoryHeap>& heap, size_t offset, size_t size); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 155 | |
| 156 | // camera operation mode |
| 157 | enum camera_mode { |
| 158 | CAMERA_PREVIEW_MODE = 0, // frame automatically released |
| 159 | CAMERA_RECORDING_MODE = 1, // frame has to be explicitly released by releaseRecordingFrame() |
| 160 | }; |
| 161 | status_t startCameraMode(camera_mode mode); |
| 162 | status_t startPreviewMode(); |
| 163 | status_t startRecordingMode(); |
Wu-cheng Li | b8a10fe | 2009-06-23 23:37:36 +0800 | [diff] [blame] | 164 | status_t setOverlay(); |
| 165 | status_t registerPreviewBuffers(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 166 | |
| 167 | // Ensures atomicity among the public methods |
| 168 | mutable Mutex mLock; |
| 169 | |
| 170 | // mSurfaceLock synchronizes access to mSurface between |
| 171 | // setPreviewSurface() and postPreviewFrame(). Note that among |
| 172 | // the public methods, all accesses to mSurface are |
| 173 | // syncrhonized by mLock. However, postPreviewFrame() is called |
| 174 | // by the CameraHardwareInterface callback, and needs to |
| 175 | // access mSurface. It cannot hold mLock, however, because |
| 176 | // stopPreview() may be holding that lock while attempting |
| 177 | // to stop preview, and stopPreview itself will block waiting |
| 178 | // for a callback from CameraHardwareInterface. If this |
| 179 | // happens, it will cause a deadlock. |
| 180 | mutable Mutex mSurfaceLock; |
| 181 | mutable Condition mReady; |
| 182 | sp<CameraService> mCameraService; |
| 183 | sp<ISurface> mSurface; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 184 | int mPreviewCallbackFlag; |
Chih-Chung Chang | e1ceec2 | 2010-01-21 17:31:06 -0800 | [diff] [blame] | 185 | int mOrientation; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 186 | |
Jason Sams | b18b691 | 2009-03-24 20:21:36 -0700 | [diff] [blame] | 187 | sp<MediaPlayer> mMediaPlayerClick; |
| 188 | sp<MediaPlayer> mMediaPlayerBeep; |
| 189 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 190 | // these are immutable once the object is created, |
| 191 | // they don't need to be protected by a lock |
| 192 | sp<ICameraClient> mCameraClient; |
| 193 | sp<CameraHardwareInterface> mHardware; |
| 194 | pid_t mClientPid; |
| 195 | bool mUseOverlay; |
Benny Wong | 6d2090e | 2009-07-15 18:44:27 -0500 | [diff] [blame] | 196 | |
| 197 | sp<OverlayRef> mOverlayRef; |
| 198 | int mOverlayW; |
| 199 | int mOverlayH; |
Dave Sparks | 05fd0df | 2009-11-10 17:08:08 -0800 | [diff] [blame] | 200 | |
| 201 | mutable Mutex mPreviewLock; |
| 202 | sp<MemoryHeapBase> mPreviewBuffer; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 203 | }; |
| 204 | |
| 205 | // ---------------------------------------------------------------------------- |
| 206 | |
| 207 | CameraService(); |
| 208 | virtual ~CameraService(); |
| 209 | |
Chih-Chung Chang | 6fcba31 | 2009-06-24 13:44:37 +0800 | [diff] [blame] | 210 | // We use a count for number of clients (shoule only be 0 or 1). |
| 211 | volatile int32_t mUsers; |
| 212 | virtual void incUsers(); |
| 213 | virtual void decUsers(); |
| 214 | |
Chih-Chung Chang | d5d1ebd | 2009-06-24 19:59:31 +0800 | [diff] [blame] | 215 | mutable Mutex mServiceLock; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 216 | wp<Client> mClient; |
| 217 | |
| 218 | #if DEBUG_HEAP_LEAKS |
| 219 | wp<IMemoryHeap> gWeakHeap; |
| 220 | #endif |
| 221 | }; |
| 222 | |
| 223 | // ---------------------------------------------------------------------------- |
| 224 | |
| 225 | }; // namespace android |
| 226 | |
| 227 | #endif |