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-rw-r--r--include/ui/Camera.h196
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diff --git a/include/ui/Camera.h 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
-
generated by cgit v1.1 at 2024-06-07 14:51:12 +0000