auto import from //depot/cupcake/@135843

1 files changed, 206 insertions, 0 deletions

diff --git a/camera/libcameraservice/CameraService.h b/camera/libcameraservice/CameraService.h
new file mode 100644
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+++ b/camera/libcameraservice/CameraService.h
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+/*
+**
+** Copyright (C) 2008, The Android Open Source Project
+** Copyright (C) 2008 HTC Inc.
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#ifndef ANDROID_SERVERS_CAMERA_CAMERASERVICE_H
+#define ANDROID_SERVERS_CAMERA_CAMERASERVICE_H
+
+#include <ui/ICameraService.h>
+#include <ui/CameraHardwareInterface.h>
+#include <ui/Camera.h>
+
+class android::MemoryHeapBase;
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+#define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
+#define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
+
+// When enabled, this feature allows you to send an event to the CameraService
+// so that you can cause all references to the heap object gWeakHeap, defined
+// below, to be printed. You will also need to set DEBUG_REFS=1 and
+// DEBUG_REFS_ENABLED_BY_DEFAULT=0 in libutils/RefBase.cpp. You just have to
+// set gWeakHeap to the appropriate heap you want to track.
+
+#define DEBUG_HEAP_LEAKS 0
+
+// ----------------------------------------------------------------------------
+
+class CameraService : public BnCameraService
+{
+    class Client;
+
+public:
+    static void instantiate();
+
+    // ICameraService interface
+    virtual sp<ICamera>     connect(const sp<ICameraClient>& cameraClient);
+
+    virtual status_t        dump(int fd, const Vector<String16>& args);
+
+            void            removeClient(const sp<ICameraClient>& cameraClient);
+
+#if DEBUG_HEAP_LEAKS
+    virtual status_t onTransact(
+        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
+#endif
+
+private:
+
+// ----------------------------------------------------------------------------
+
+    class Client : public BnCamera {
+
+    public:
+        virtual void            disconnect();
+
+        // connect new client with existing camera remote
+        virtual status_t        connect(const sp<ICameraClient>& client);
+
+        // prevent other processes from using this ICamera interface
+        virtual status_t        lock();
+
+        // allow other processes to use this ICamera interface
+        virtual status_t        unlock();
+
+        // pass the buffered ISurface to the camera service
+        virtual status_t        setPreviewDisplay(const sp<ISurface>& surface);
+
+        // set the preview callback flag to affect how the received frames from
+        // preview are handled.
+        virtual void            setPreviewCallbackFlag(int callback_flag);
+
+        // start preview mode, must call setPreviewDisplay first
+        virtual status_t        startPreview();
+
+        // stop preview mode
+        virtual void            stopPreview();
+
+        // get preview state
+        virtual bool            previewEnabled();
+
+        // start recording mode
+        virtual status_t        startRecording();
+
+        // stop recording mode
+        virtual void            stopRecording();
+
+        // get recording state
+        virtual bool            recordingEnabled();
+
+        // release a recording frame
+        virtual void            releaseRecordingFrame(const sp<IMemory>& mem);
+
+        // auto focus
+        virtual status_t        autoFocus();
+
+        // take a picture - returns an IMemory (ref-counted mmap)
+        virtual status_t        takePicture();
+
+        // set preview/capture parameters - key/value pairs
+        virtual status_t        setParameters(const String8& params);
+
+        // get preview/capture parameters - key/value pairs
+        virtual String8         getParameters() const;
+
+        // our client...
+        const sp<ICameraClient>&    getCameraClient() const { return mCameraClient; }
+
+    private:
+        friend class CameraService;
+                                Client(const sp<CameraService>& cameraService,
+                                        const sp<ICameraClient>& cameraClient,
+                                        pid_t clientPid);
+                                Client();
+        virtual                 ~Client();
+
+                    status_t    checkPid();
+
+        static      void        recordingCallback(const sp<IMemory>& mem, void* user);
+        static      void        previewCallback(const sp<IMemory>& mem, void* user);
+        static      void        shutterCallback(void *user);
+        static      void        yuvPictureCallback(const sp<IMemory>& mem, void* user);
+        static      void        jpegPictureCallback(const sp<IMemory>& mem, void* user);
+        static      void        autoFocusCallback(bool focused, void* user);
+        static      sp<Client>  getClientFromCookie(void* user);
+
+                    void        postShutter();
+                    void        postRaw(const sp<IMemory>& mem);
+                    void        postJpeg(const sp<IMemory>& mem);
+                    void        postPreviewFrame(const sp<IMemory>& mem);
+                    void        postRecordingFrame(const sp<IMemory>& frame);
+                    void        copyFrameAndPostCopiedFrame(sp<IMemoryHeap> heap, size_t offset, size_t size);
+                    void        postError(status_t error);
+                    void        postAutoFocus(bool focused);
+
+        // camera operation mode
+        enum camera_mode {
+            CAMERA_PREVIEW_MODE   = 0,  // frame automatically released
+            CAMERA_RECORDING_MODE = 1,  // frame has to be explicitly released by releaseRecordingFrame()
+        };
+        status_t                startCameraMode(camera_mode mode);
+        status_t                startPreviewMode();
+        status_t                startRecordingMode();
+
+        // Ensures atomicity among the public methods
+        mutable     Mutex                       mLock;
+
+        // mSurfaceLock synchronizes access to mSurface between
+        // setPreviewSurface() and postPreviewFrame().  Note that among
+        // the public methods, all accesses to mSurface are
+        // syncrhonized by mLock.  However, postPreviewFrame() is called
+        // by the CameraHardwareInterface callback, and needs to
+        // access mSurface.  It cannot hold mLock, however, because
+        // stopPreview() may be holding that lock while attempting
+        // to stop preview, and stopPreview itself will block waiting
+        // for a callback from CameraHardwareInterface.  If this
+        // happens, it will cause a deadlock.
+        mutable     Mutex                       mSurfaceLock;
+        mutable     Condition                   mReady;
+                    sp<CameraService>           mCameraService;
+                    sp<ISurface>                mSurface;
+                    sp<MemoryHeapBase>          mPreviewBuffer;
+                    int                         mPreviewCallbackFlag;
+
+                    // these are immutable once the object is created,
+                    // they don't need to be protected by a lock
+                    sp<ICameraClient>           mCameraClient;
+                    sp<CameraHardwareInterface> mHardware;
+                    pid_t                       mClientPid;
+                    bool                        mUseOverlay;
+    };
+
+// ----------------------------------------------------------------------------
+
+                            CameraService();
+    virtual                 ~CameraService();
+
+    mutable     Mutex                       mLock;
+                wp<Client>                  mClient;
+
+#if DEBUG_HEAP_LEAKS
+                wp<IMemoryHeap>             gWeakHeap;
+#endif
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif