/*
 * Copyright (C) 2007 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.
 */

package com.android.stk;

import java.util.HashMap;

import android.media.AudioManager;
import android.media.ToneGenerator;
import com.android.internal.telephony.gsm.stk.Tone;

/**
 * Class that implements a tones player for the SIM toolkit application.
 * 
 */
public class TonePlayer {
    private static final HashMap<Tone, Integer> mToneMap = new HashMap<Tone, Integer>();

    static {
        // Map STK tone ids to the system tone ids.
        mToneMap.put(Tone.DIAL, ToneGenerator.TONE_SUP_DIAL);
        mToneMap.put(Tone.BUSY, ToneGenerator.TONE_SUP_BUSY);
        mToneMap.put(Tone.CONGESTION, ToneGenerator.TONE_SUP_CONGESTION);
        mToneMap.put(Tone.RADIO_PATH_ACK, ToneGenerator.TONE_SUP_RADIO_ACK);
        mToneMap.put(Tone.RADIO_PATH_NOT_AVAILABLE, ToneGenerator.TONE_SUP_RADIO_NOTAVAIL);
        mToneMap.put(Tone.ERROR_SPECIAL_INFO, ToneGenerator.TONE_SUP_ERROR);
        mToneMap.put(Tone.CALL_WAITING, ToneGenerator.TONE_SUP_CALL_WAITING);
        mToneMap.put(Tone.RINGING, ToneGenerator.TONE_SUP_RINGTONE);
        mToneMap.put(Tone.GENERAL_BEEP, ToneGenerator.TONE_PROP_BEEP);
        mToneMap.put(Tone.POSITIVE_ACK, ToneGenerator.TONE_PROP_ACK);
        mToneMap.put(Tone.NEGATIVE_ACK, ToneGenerator.TONE_PROP_NACK);
    }

    private ToneGenerator mToneGenerator = null;

    TonePlayer() {
        mToneGenerator = new ToneGenerator(AudioManager.STREAM_SYSTEM, 100);
    }

    public void play(Tone tone) {
        int toneId = getToneId(tone);
        if (toneId > 0 && mToneGenerator != null) {
            mToneGenerator.startTone(toneId);
        }
    }

    public void stop() {
        if (mToneGenerator != null) {
            mToneGenerator.stopTone();
        }
    }

    public void release() {
        mToneGenerator.release();
    }

    private int getToneId(Tone tone) {
        int toneId = ToneGenerator.TONE_PROP_BEEP;

        if (tone != null && mToneMap.containsKey(tone)) {
            toneId = mToneMap.get(tone);
        }
        return toneId;
    }
}