include/media/stagefright/CameraSource.h

/*
 * Copyright (C) 2009 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 CAMERA_SOURCE_H_

#define CAMERA_SOURCE_H_

#include <media/stagefright/MediaBuffer.h>
#include <media/stagefright/MediaSource.h>
#include <utils/List.h>
#include <utils/RefBase.h>
#include <utils/threads.h>

namespace android {

class ICamera;
class ICameraClient;
class IMemory;

class CameraSource : public MediaSource,
                     public MediaBufferObserver {
public:
    static CameraSource *Create();

    virtual ~CameraSource();

    virtual status_t start(MetaData *params = NULL);
    virtual status_t stop();

    virtual sp<MetaData> getFormat();

    virtual status_t read(
            MediaBuffer **buffer, const ReadOptions *options = NULL);

    virtual void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2);
    virtual void dataCallback(int32_t msgType, const sp<IMemory>& data);

    virtual void signalBufferReturned(MediaBuffer *buffer);

private:
    CameraSource(const sp<ICamera> &camera, const sp<ICameraClient> &client);

    sp<ICamera> mCamera;
    sp<ICameraClient> mCameraClient;

    Mutex mLock;
    Condition mFrameAvailableCondition;
    List<sp<IMemory> > mFrames;

    int mNumFrames;
    bool mStarted;

    CameraSource(const CameraSource &);
    CameraSource &operator=(const CameraSource &);
};

}  // namespace android

#endif  // CAMERA_SOURCE_H_