media/libstagefright/include/TimedTextPlayer.h

/*
 * 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 TIMEDTEXT_PLAYER_H_

#define TIMEDTEXT_PLAYER_H_

#include <media/MediaPlayerInterface.h>
#include <media/stagefright/foundation/ABase.h>

#include "include/TimedEventQueue.h"

namespace android {

class MediaSource;
class AwesomePlayer;
class MediaBuffer;

class TimedTextPlayer {
public:
    TimedTextPlayer(AwesomePlayer *observer,
                    const wp<MediaPlayerBase> &listener,
                    TimedEventQueue *queue);

    virtual ~TimedTextPlayer();

    // index: the index of the text track which will
    // be turned on
    status_t start(uint8_t index);

    void pause();

    void resume();

    status_t seekTo(int64_t time_us);

    void addTextSource(sp<MediaSource> source);

    status_t setTimedTextTrackIndex(int32_t index);

private:
    Mutex mLock;

    sp<MediaSource> mSource;

    bool mSeeking;
    int64_t mSeekTimeUs;

    bool mStarted;

    sp<TimedEventQueue::Event> mTextEvent;
    bool mTextEventPending;

    TimedEventQueue *mQueue;

    wp<MediaPlayerBase> mListener;
    AwesomePlayer *mObserver;

    MediaBuffer *mTextBuffer;
    Parcel mData;

    Vector<sp<MediaSource> > mTextTrackVector;

    void reset();

    void onTextEvent();
    void postTextEvent(int64_t delayUs = -1);
    void cancelTextEvent();

    void notifyListener(
            int msg, const void *data = NULL, size_t size = 0);

    DISALLOW_EVIL_CONSTRUCTORS(TimedTextPlayer);
};

}  // namespace android

#endif  // TIMEDTEXT_PLAYER_H_