library/src/main/java/org/antennapod/audio/AbstractAudioPlayer.java

// Copyright 2011, Aocate, 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.

package org.antennapod.audio;

import android.content.Context;
import android.net.Uri;
import android.util.Log;

import java.io.IOException;
import java.util.concurrent.locks.ReentrantLock;

public abstract class AbstractAudioPlayer {

    private static final String MPI_TAG = "AbstractMediaPlayer";
    protected final MediaPlayer owningMediaPlayer;
    protected final Context mContext;
    protected int muteOnPreparedCount = 0;
    protected int muteOnSeekCount = 0;

    public AbstractAudioPlayer(MediaPlayer owningMediaPlayer, Context context) {
        this.owningMediaPlayer = owningMediaPlayer;

        this.mContext = context;
    }

    public abstract int getAudioSessionId();

    public abstract boolean canSetPitch();

    public abstract boolean canSetSpeed();

    public abstract boolean canDownmix();

    public abstract float getCurrentPitchStepsAdjustment();

    public abstract int getCurrentPosition();

    public abstract float getCurrentSpeedMultiplier();

    public abstract int getDuration();

    public abstract float getMaxSpeedMultiplier();

    public abstract float getMinSpeedMultiplier();

    public abstract boolean isLooping();

    public abstract boolean isPlaying();

    public abstract void pause();

    public abstract void prepare() throws IllegalStateException, IOException;

    public abstract void prepareAsync();

    public abstract void release();

    public abstract void reset();

    public abstract void seekTo(int msec) throws IllegalStateException;

    public abstract void setAudioStreamType(int streamtype);

    public abstract void setDataSource(Context context, Uri uri) throws IllegalArgumentException, IllegalStateException, IOException;

    public abstract void setDataSource(String path) throws IllegalArgumentException, IllegalStateException, IOException;

    public abstract void setEnableSpeedAdjustment(boolean enableSpeedAdjustment);

    public abstract void setLooping(boolean loop);

    public abstract void setPitchStepsAdjustment(float pitchSteps);

    public abstract void setPlaybackPitch(float f);

    public abstract void setPlaybackSpeed(float f);

    public abstract void setDownmix(boolean enable);

    public abstract void setVolume(float leftVolume, float rightVolume);

    public abstract void setWakeMode(Context context, int mode);

    public abstract void start();

    public abstract void stop();

    protected final ReentrantLock lockMuteOnPreparedCount = new ReentrantLock();
    public void muteNextOnPrepare() {
        lockMuteOnPreparedCount.lock();
        Log.d(MPI_TAG, "muteNextOnPrepare()");
        try {
            this.muteOnPreparedCount++;
        }
        finally {
            lockMuteOnPreparedCount.unlock();
        }
    }

    protected final ReentrantLock lockMuteOnSeekCount = new ReentrantLock();
    public void muteNextSeek() {
        lockMuteOnSeekCount.lock();
        Log.d(MPI_TAG, "muteNextOnSeek()");
        try {
            this.muteOnSeekCount++;
        }
        finally {
            lockMuteOnSeekCount.unlock();
        }
    }
}