auto import from //depot/cupcake/@135843

1 files changed, 196 insertions, 0 deletions

diff --git a/include/ui/Camera.h b/include/ui/Camera.h
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+++ b/include/ui/Camera.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_HARDWARE_CAMERA_H
+#define ANDROID_HARDWARE_CAMERA_H
+
+#include <ui/ICameraClient.h>
+
+namespace android {
+
+/*
+ * A set of bit masks for specifying how the received preview frames are
+ * handled before the previewCallback() call.
+ *
+ * The least significant 3 bits of an "int" value are used for this purpose:
+ *
+ * ..... 0 0 0
+ *       ^ ^ ^
+ *       | | |---------> determine whether the callback is enabled or not
+ *       | |-----------> determine whether the callback is one-shot or not
+ *       |-------------> determine whether the frame is copied out or not
+ *
+ * WARNING:
+ * When a frame is sent directly without copying, it is the frame receiver's
+ * responsiblity to make sure that the frame data won't get corrupted by
+ * subsequent preview frames filled by the camera. This flag is recommended
+ * only when copying out data brings significant performance price and the
+ * handling/processing of the received frame data is always faster than
+ * the preview frame rate so that data corruption won't occur.
+ *
+ * For instance,
+ * 1. 0x00 disables the callback. In this case, copy out and one shot bits
+ *    are ignored.
+ * 2. 0x01 enables a callback without copying out the received frames. A
+ *    typical use case is the Camcorder application to avoid making costly
+ *    frame copies.
+ * 3. 0x05 is enabling a callback with frame copied out repeatedly. A typical
+ *    use case is the Camera application.
+ * 4. 0x07 is enabling a callback with frame copied out only once. A typical use
+ *    case is the Barcode scanner application.
+ */
+#define FRAME_CALLBACK_FLAG_ENABLE_MASK              0x01
+#define FRAME_CALLBACK_FLAG_ONE_SHOT_MASK            0x02
+#define FRAME_CALLBACK_FLAG_COPY_OUT_MASK            0x04
+
+// Typical use cases
+#define FRAME_CALLBACK_FLAG_NOOP                     0x00
+#define FRAME_CALLBACK_FLAG_CAMCORDER                0x01
+#define FRAME_CALLBACK_FLAG_CAMERA                   0x05
+#define FRAME_CALLBACK_FLAG_BARCODE_SCANNER          0x07
+
+class ICameraService;
+class ICamera;
+class Surface;
+class Mutex;
+class String8;
+
+typedef void (*shutter_callback)(void *cookie);
+typedef void (*frame_callback)(const sp<IMemory>& mem, void *cookie);
+typedef void (*autofocus_callback)(bool focused, void *cookie);
+typedef void (*error_callback)(status_t err, void *cookie);
+
+class Camera : public BnCameraClient, public IBinder::DeathRecipient
+{
+public:
+            // construct a camera client from an existing remote
+            Camera(const sp<ICamera>& camera);
+
+    static  sp<Camera>  connect();
+                        ~Camera();
+            void        init();
+
+            status_t    reconnect();
+            void        disconnect();
+            status_t    lock();
+            status_t    unlock();
+
+            status_t    getStatus() { return mStatus; }
+
+            // pass the buffered ISurface to the camera service
+            status_t    setPreviewDisplay(const sp<Surface>& surface);
+            status_t    setPreviewDisplay(const sp<ISurface>& surface);
+
+            // start preview mode, must call setPreviewDisplay first
+            status_t    startPreview();
+
+            // stop preview mode
+            void        stopPreview();
+
+            // get preview state
+            bool        previewEnabled();
+
+            // start recording mode, must call setPreviewDisplay first
+            status_t    startRecording();
+
+            // stop recording mode
+            void        stopRecording();
+
+            // get recording state
+            bool        recordingEnabled();
+
+            // release a recording frame
+            void        releaseRecordingFrame(const sp<IMemory>& mem);
+
+            // autoFocus - status returned from callback
+            status_t    autoFocus();
+
+            // take a picture - picture returned from callback
+            status_t    takePicture();
+
+            // set preview/capture parameters - key/value pairs
+            status_t    setParameters(const String8& params);
+
+            // get preview/capture parameters - key/value pairs
+            String8     getParameters() const;
+
+            void        setShutterCallback(shutter_callback cb, void *cookie);
+            void        setRawCallback(frame_callback cb, void *cookie);
+            void        setJpegCallback(frame_callback cb, void *cookie);
+            void        setRecordingCallback(frame_callback cb, void *cookie);
+            void        setPreviewCallback(frame_callback cb, void *cookie, int preview_callback_flag = FRAME_CALLBACK_FLAG_NOOP);
+            void        setErrorCallback(error_callback cb, void *cookie);
+            void        setAutoFocusCallback(autofocus_callback cb, void *cookie);
+
+    // ICameraClient interface
+    virtual void        shutterCallback();
+    virtual void        rawCallback(const sp<IMemory>& picture);
+    virtual void        jpegCallback(const sp<IMemory>& picture);
+    virtual void        previewCallback(const sp<IMemory>& frame);
+    virtual void        errorCallback(status_t error);
+    virtual void        autoFocusCallback(bool focused);
+    virtual void        recordingCallback(const sp<IMemory>& frame);
+
+    sp<ICamera>         remote();
+
+private:
+                        Camera();
+                        virtual void binderDied(const wp<IBinder>& who);
+
+            class DeathNotifier: public IBinder::DeathRecipient
+            {
+            public:
+                DeathNotifier() {
+                }
+
+                virtual void binderDied(const wp<IBinder>& who);
+            };
+
+            static sp<DeathNotifier> mDeathNotifier;
+
+            // helper function to obtain camera service handle
+            static const sp<ICameraService>& getCameraService();
+
+            sp<ICamera>         mCamera;
+            status_t            mStatus;
+
+            shutter_callback    mShutterCallback;
+            void                *mShutterCallbackCookie;
+            frame_callback      mRawCallback;
+            void                *mRawCallbackCookie;
+            frame_callback      mJpegCallback;
+            void                *mJpegCallbackCookie;
+            frame_callback      mPreviewCallback;
+            void                *mPreviewCallbackCookie;
+            frame_callback      mRecordingCallback;
+            void                *mRecordingCallbackCookie;
+            error_callback      mErrorCallback;
+            void                *mErrorCallbackCookie;
+            autofocus_callback  mAutoFocusCallback;
+            void                *mAutoFocusCallbackCookie;
+
+            friend class DeathNotifier;
+
+            static  Mutex               mLock;
+            static  sp<ICameraService>  mCameraService;
+
+};
+
+}; // namespace android
+
+#endif
+