constructsounds.java

利用opensource的开源jar实现生成flash文件

/*
 *  BasicSounds.java
 *  Examples
 *
 *  Created by Stuart MacKay on Fri Jun 06 2003.
 *  Copyright (c) 2001-2004 Flagstone Software Ltd. All rights reserved.
 *
 *  This code is distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 *  EXPRESS OR IMPLIED, AND Flagstone HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING
 *  WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 *  PURPOSE, AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
 */
package com.flagstone.transform.examples;

import com.flagstone.transform.*;
import com.flagstone.transform.util.*;

import java.io.*;

/*
 * This example shows how the FSSoundConstructor class can be used to generate
 * the objects used to play a sound in a movie.
 *
 * To run this example, type the following on a command line:
 *
 *     java com.flagstone.transform.examples.ConstructSounds 
 *         --file sound-file [--resultDir path]
 *
 * where
 *
 *     sound-file is the path to a file containing a WAVE or MP3 format sound.
 *
 *     resultDir is the directory where the Flash file generated by the example 
 *     is written to.
 *
 */
public class ConstructSounds extends Example
{    
    private FSSoundConstructor soundGenerator = null;

    public static void main(String[] args)
    {
        new ConstructSounds(args);
    }

    public ConstructSounds(String[] args)
    {
        super(args);
    
        String soundFile = getOption("file", "");
            
        /* Create the name of the Flash file generated using the name of the 
         * sound file - replaciing the file extension with '.swf'.
         */
        int first = soundFile.lastIndexOf(File.separatorChar);
        int last = soundFile.lastIndexOf('.');
            
        String fileOut = resultDir + File.separator + soundFile.substring(first, last) + ".swf";
    
        try 
        {
            /* Create the FSSoundConstructor object used to generate the object
             * that defines the sound. Initialize it using the name of the 
             * sound file passed on the command line when the exanple was run.
             */
            soundGenerator = new FSSoundConstructor(soundFile);

            createMovie();
    
            movie.encodeToFile(fileOut);
        }
        catch (Exception e)
        {
            /* Several exceptions could be thrown to get to this point. The 
             * FSSoundConstructor will throw a FileNotFoundException, IOException 
             * or DataFormatException if the sound is not the correct format or
             * if an error occurs while loading the file and extracting the
             * sound.
             * 
             * The FSMovie will throw a FileNotFoundException or IOException if 
             * there is a problem generating the Flash file.
             * 
             * The exceptions are all caught in a single handler to make the code 
             * more readable.
             */
            System.err.println("Cannot create file for sound:" + soundFile);
        }
    }
    
    void createMovie()
    {
        float framesPerSecond = 12.0f;
        int soundId = movie.newIdentifier();

        /*
         * Calculate the time it takes to play the sound and the number of frames 
         * this represents.
         */
        float duration = ((float) soundGenerator.getSamplesPerChannel()) / 
            ((float) soundGenerator.getSampleRate());
            
        int numberOfFrames = (int) (duration * framesPerSecond);
        
        /*
         * Add the sound definition and the FSStartSound object which is used to start
         * the sound playing.
         */
        
        //if (soundGenerator.getFormat() == FSSound.PCM)
        //    soundGenerator.compressADPCM(5);
        
        FSDefineSound sound = soundGenerator.defineSound(soundId);
        
        /* 
         * Add all the objects together to create the movie.
         */
        movie.setFrameSize(new FSBounds(0, 0, 8000, 4000));
        movie.setFrameRate(framesPerSecond);
        movie.add(new FSSetBackgroundColor(FSColorTable.lightblue()));
        movie.add(sound);
        
        /*
         * Signal the Flash Player to begin playing the sound.
         */
        movie.add(new FSStartSound(new FSSound(soundId, FSSound.Start)));

        /* 
         * Add enough frames to give the sound time to play.
         */
        for (int i=0; i<numberOfFrames; i++)
            movie.add(new FSShowFrame());

    }
}