| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * 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_ICAMERA_RECORDING_PROXY_H |
| #define ANDROID_HARDWARE_ICAMERA_RECORDING_PROXY_H |
| |
| #include <vector> |
| #include <binder/IInterface.h> |
| #include <cutils/native_handle.h> |
| #include <utils/RefBase.h> |
| |
| namespace android { |
| |
| class Parcel; |
| |
| /* |
| * The purpose of ICameraRecordingProxy is to |
| * allow applications to use the camera during recording with the old camera API. |
| * |
| * Camera service allows only one client at a time. Since camcorder application |
| * needs to own the camera to do things like zoom, the media recorder cannot |
| * access the camera directly during recording. So ICameraRecordingProxy is a |
| * proxy of ICamera, which allows the media recorder to start/stop the recording |
| * and release recording frames. ICameraRecordingProxyListener is an interface |
| * that allows the recorder to receive video frames during recording. |
| * |
| * ICameraRecordingProxy |
| * startRecording() |
| * stopRecording() |
| * |
| * The camcorder app opens the camera and starts the preview. The app passes |
| * ICamera and ICameraRecordingProxy to the media recorder by |
| * MediaRecorder::setCamera(). The recorder uses ICamera to setup the camera in |
| * MediaRecorder::start(). After setup, the recorder disconnects from camera |
| * service. The recorder calls ICameraRecordingProxy::startRecording() and The |
| * app owns the camera and can do things like zoom. The media recorder receives |
| * the video frames via a buffer queue. The recorder calls |
| * ICameraRecordingProxy::stopRecording() to stop the recording. |
| * |
| * The call sequences are as follows: |
| * 1. The app: Camera.unlock(). |
| * 2. The app: MediaRecorder.setCamera(). |
| * 3. Start recording |
| * (1) The app: MediaRecorder.start(). |
| * (2) The recorder: ICamera.setVideoTarget(buffer queue). |
| * (3) The recorder: ICamera.unlock() and ICamera.disconnect(). |
| * (4) The recorder: ICameraRecordingProxy.startRecording(). |
| * (5) The app: ICamera.reconnect(). |
| * (6) The app: ICamera.startRecording(). |
| * 4. During recording |
| * (1) The recorder: receive frames via a buffer queue |
| * (2) The recorder: release frames via a buffer queue |
| * 5. Stop recording |
| * (1) The app: MediaRecorder.stop() |
| * (2) The recorder: ICameraRecordingProxy.stopRecording(). |
| * (3) The app: ICamera.stopRecording(). |
| */ |
| |
| class ICameraRecordingProxy: public IInterface |
| { |
| public: |
| DECLARE_META_INTERFACE(CameraRecordingProxy); |
| |
| virtual status_t startRecording() = 0; |
| virtual void stopRecording() = 0; |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| class BnCameraRecordingProxy: public BnInterface<ICameraRecordingProxy> |
| { |
| public: |
| virtual status_t onTransact( uint32_t code, |
| const Parcel& data, |
| Parcel* reply, |
| uint32_t flags = 0); |
| }; |
| |
| }; // namespace android |
| |
| #endif |