scriptplayer.java

j2me 上面flash播放器。非常值得研究。就是版本只到2.0

package org.jflashme;

/*  This library is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU Lesser General Public License, version 2, as
 *  published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License (the accompanying file named LGPL.txt)
 *  for more details.
 */

import java.io.*;
import javax.microedition.lcdui.*;

final class ScriptPlayer
    extends SParser implements Runnable {
  static final boolean debug = true;

  static final int MAX_CHARACTER_NUM = 64;

  static final int TAG_SHOWFRAME = 1;
  static final int TAG_DEFINESHAPE = 2;
  static final int TAG_FREE = 3;
  static final int TAG_PLACEOBJECT = 4;
  static final int TAG_REMOVEOBJECT = 5;
  static final int TAG_DEFINEBITS = 6;
  static final int TAG_DEFINEBUTTON = 7;
  static final int TAG_JPEGTABLES = 8;
  static final int TAG_SETBACKGROUNDCOLOR = 9;
  static final int TAG_DEFINEFONT = 10;
  static final int TAG_DEFINETEXT = 11;
  static final int TAG_DOACTION = 12;
  static final int TAG_DEFINEFONTINFO = 13;
  static final int TAG_DEFINESOUND = 14;
  static final int TAG_STARTSOUND = 15;
  static final int TAG_DEFINEBUTTONSOUND = 17;
  static final int TAG_SOUNDSTREAMHEAD = 18;
  static final int TAG_SOUNDSTREAMBLOCK = 19;
  static final int TAG_DEFINEBITSJPEG2 = 21;
  static final int TAG_DEFINESHAPE2 = 22;
  static final int TAG_DEFINEBUTTONCXFORM = 23;
  static final int TAG_PROTECT = 24;
  static final int TAG_PLACEOBJECT2 = 26;
  static final int TAG_REMOVEOBJECT2 = 28;
  static final int TAG_DEFINESHAPE3 = 32;
  static final int TAG_DEFINETEXT2 = 33;
  static final int TAG_FRAMELABEL = 43;
  static final int TAG_DEFINEFONTINFO2 = 62;

  static final int noErr = 0;
  static final int badHeaderErr = -1;
  static final int noMemErr = -2;
  static final int noScriptErr = -3;
  static final int playOK = 0;
  static final int playNeedData = 1;
  static final int playAtEnd = 2;
  /*   static final int soundHasInPoint = 1;
     static final int soundHasOutPoint = 2;
     static final int soundHasLoops = 4;
     static final int soundHasEnvelope = 8;*/
  static final int syncNoMultiple = 1;
  static final int syncStop = 2;
  int nextPos;
  int startPos;
  int scriptErr;
  int len;
  int scriptLen;
  Rect frame;
  int frameRate;
  int frameDelay;
  int numFrames;
  int version;
  int headerLen;
  byte headerBuf[];
  boolean gotHeader;
  boolean atEnd;
  int curFrame;
  Semaphore gotData;
  DisplayList display;
  static final int maxActions = 16;
  public int actionList[];
  public int nActions;
  static final int charIndexSize = 64;
  static final int charIndexMask = 63;
  SCharacter charIndex[];
  FlashPane flash;
//   Sound streamSound;
  int mixFormat;
  boolean mute;
  static final int START_MARKER = 216;
  static final int END_MARKER = 217;
  static final int TAG_MARKER = 255;
  private int jpegTablePos;
  private int jpegTableLen;
  private static int imageClassToUse;
  /*    private static final int IMAGE_NOT_INITIALIZED = 0;
     private static final int IMAGE_TOOLKIT = 1;
     private static final int IMAGE_SUN = 2;
     private static final int IMAGE_NONE = 3;*/
  private int numFramesComplete;
  private int numFramesCompletePos;
  private InputStream scriptStream;
  private boolean scriptComplete;

  ScriptPlayer() {
    headerBuf = new byte[8];
    gotData = new Semaphore(false);
    actionList = new int[16];
    charIndex = new SCharacter[MAX_CHARACTER_NUM];
//      streamSound = new Sound(0, 0, null, 0,flash);
    frame = new Rect(0, 0, 600, 600);
    ClearScript();
  }

  ScriptPlayer(FlashPane flash1) {
    this();
    flash = flash1;
  }

  public final boolean ScriptComplete() {
    return super.script != null && len >= scriptLen;
  }

  public final boolean GotHeader() {
    return gotHeader;
  }

  public final int GetFrame() {
    return curFrame;
  }

  public final boolean AtEnd() {
    return atEnd;
  }

  /*    void PlayButtonSound(SObject sobject, int i)
      {
          int j = sobject.buttonState;
          if(j == i || i != 1 && j > i)
              return;
          if(sobject.character.soundPos > 0)
          {
              SParser sparser = new SParser();
              byte abyte0[] = super.script;
              int l = sobject.character.soundPos;
              sparser.script = abyte0;
              sparser.pos = l;
              for(int k = 1; k < i; k <<= 1)
              {
                  l = sparser.GetWord();
                  if(l > 0)
                      sparser.GetSoundInfo(null, null, true);
              }

              l = sparser.GetWord();
              if(l > 0)
              {
                  SCharacter scharacter = findCharacter(l);
                  if(scharacter == null || scharacter.type != 5)
                      return;
                  int ai[] = new int[1];
                  int ai1[] = new int[1];
                  Sound sound = (Sound)scharacter.object;
                  sparser.GetSoundInfo(ai, ai1, false);
                  if(sound.ConvertToMulaw())
                  {
                      if((ai1[0] & 2) != 0)
                      {
                          sound.stop();
                          return;
                      }
                      if((ai1[0] & 1) != 0 && !mute)
                      {
                          sound.playNoMultiple(ai[0]);
                          return;
                      }
                      if(!mute)
                          sound.playMultiple(ai[0]);
                  }
              }
          }
      }

      void SoundStreamHead()
      {
          mixFormat = super.script[super.pos++] & 0xff;
          streamSound.SetFormat(super.script[super.pos++] & 0xff);
          streamSound.SetSamples(GetWord());
      }

      void SoundStreamBlock()
      {
      }

      void stopAllSounds()
      {
          for(Sound sound = streamSound; sound != null; sound = sound.next)
              sound.stop();

          streamSound.soundMixer.stopAllStreams();
      }

      void StartSound()
      {
          int i = GetWord();
          SCharacter scharacter = findCharacter(i);
          if(scharacter == null || scharacter.type != 5)
              return;
          int ai[] = new int[1];
          int ai1[] = new int[1];
          Sound sound = (Sound)scharacter.object;
          GetSoundInfo(ai, ai1, false);
          if(sound.ConvertToMulaw())
          {
              if((ai1[0] & 2) != 0)
              {
                  sound.stop();
                  return;
              }
              if((ai1[0] & 1) != 0 && !mute)
              {
                  sound.playNoMultiple(ai[0]);
                  return;
              }
              if(!mute)
                  sound.playMultiple(ai[0]);
          }
      }*/

  public void FreeAll() {
    if (display != null)
      display.FreeAll();
    super.pos = startPos;
    curFrame = -1;
    atEnd = false;
  }

  public void ClearScript() {
    FreeAll();
    gotHeader = false;
    curFrame = -1;
    atEnd = false;
    len = headerLen = 0;
    scriptLen = -1;
    super.pos = 0;
    super.script = null;
    scriptErr = 0;
    nActions = 0;
  }

  SCharacter findCharacter(int i) {
    SCharacter scharacter;
    for (scharacter = charIndex[i & 0x3f];
         scharacter != null && scharacter.tag != i;
         scharacter = scharacter.next);
    return scharacter;
  }

  SCharacter findCharacterAtDepth(int depth) {
    SCharacter scharacter;

    if (debug) System.out.println("findCharacterAtDepth(" + depth + ")");
    for (int i = 0; i < MAX_CHARACTER_NUM; i++) {
      scharacter = charIndex[i];
//         if (debug) System.out.println("charIndex["+i+"]="+scharacter);
      while ( (scharacter != null) && (scharacter.depth != depth)) {
//            if (debug) System.out.println("   depth: "+scharacter.depth+"!="+depth);
        scharacter = scharacter.next;
      }
      if ( (scharacter != null) && (scharacter.depth == depth))return
          scharacter;
    }
    return null;
  }

  void removeCharacter(int ID, int depth) {
    SCharacter scharacter, prevSChar;

    scharacter = charIndex[ID & 0x3F];
    if (scharacter == null)return;
    prevSChar = scharacter;
    if (scharacter.depth == depth) {
      charIndex[ID & 0x3F] = null;
      return;
    }
    else scharacter = scharacter.next;

    while ( (scharacter != null) && (scharacter.depth != depth)) scharacter =
        scharacter.next;
    if ( (scharacter != null) && (scharacter.depth == depth))
      prevSChar = scharacter.next;
  }

  private SCharacter createCharacter(int ID, int depth) {
    SCharacter scharacter = new SCharacter();
    if (scharacter != null) {
      scharacter.next = charIndex[ID & 0x3f];
      charIndex[ID & 0x3f] = scharacter;
      scharacter.player = this;
      scharacter.tag = ID;
      scharacter.depth = depth;
    }
    return scharacter;
  }

  private void freeCharacter(int i) {
    Object obj = null;
    SCharacter scharacter = charIndex[i & 0x3f];
  }

  private void defineShape() {
    SCharacter scharacter;
    int ID = GetWord();

    scharacter = findCharacter(ID);
    if (scharacter == null) scharacter = createCharacter(ID, -1);
    if (debug) System.out.println("defineShape() " + ID + ", -1");
    scharacter.type = 0;
    scharacter.bounds = GetRect();
    scharacter.dataPos = super.pos;
    return;
  }

  private void placeObject() {
    int ID = GetWord();
    int depth = GetWord();
    if (debug) System.out.println("placeObject() " + ID + ", " + depth);
    SCharacter scharacter = findCharacter(ID);
    scharacter.depth = depth;
    Matrix matrix = GetMatrix();
    if (super.pos < super.end) {
      ColorTransform colortransform = new ColorTransform(flash);
      GetColorTransform(colortransform);
      display.placeObject(scharacter, ID, depth, matrix, colortransform);
      return;
    }
    else {
      display.placeObject(scharacter, ID, depth, matrix, null);
      return;
    }
  }

  private void placeObject2() {
    final int PF_MOVE = 0x01;
    final int PF_HAS_CHARACTER = 0x02;
    final int PF_HAS_MATRIX = 0x04;
    final int PF_HAS_COLORTRANS = 0x08;

    int ID = -1, flags, depth;
    Matrix matrix = null;
    SCharacter scharacter = null;
    ColorTransform colortransform = null;

    flags = GetByte();
    depth = GetWord();
    if ( (flags & PF_HAS_CHARACTER) == PF_HAS_CHARACTER) ID = GetWord();
    if ( (flags & PF_HAS_MATRIX) == PF_HAS_MATRIX) matrix = GetMatrix();
    if ( (flags & PF_HAS_COLORTRANS) == PF_HAS_COLORTRANS) {
      colortransform = new ColorTransform(flash);
      GetColorTransform(colortransform);
    }
    if (debug) System.out.println("placeObject2() " + ID + ", " + depth + ", " +
                                  flags);

    if ( (flags & PF_MOVE | PF_HAS_CHARACTER) == (PF_MOVE | PF_HAS_CHARACTER)) {
      removeCharacter(ID, depth);
    }
    if ( (flags & /*PF_MOVE|*/ PF_HAS_CHARACTER) == PF_HAS_CHARACTER) {
      scharacter = findCharacter(ID);
      if (scharacter == null) {
        scharacter = createCharacter(ID, depth);
        scharacter.type = 0;
        scharacter.dataPos = super.pos;
        scharacter.bounds = new Rect();
      }
    }
    else { //if ((flags & PF_MOVE|PF_HAS_CHARACTER)==PF_MOVE)
      scharacter = findCharacterAtDepth(depth);
      if (scharacter == null) {
        System.err.println("Character at depth " + depth +
                           " not found at ScriptPlayer.placeObject2()");
        return;
      }
    }
    /*      else
             {
             System.err.println("Script error at ScriptPlayer.placeObject2(): PF_MOVE|PF_HAS_CHARACTER not set");
             return;
             }*/
    scharacter.depth = depth;
    display.placeObject(scharacter, ID, depth, matrix, colortransform);
  }

  private void removeObject() {
    int ID = GetWord();
    int depth = GetWord();
    display.removeObject(ID, depth);
  }

  private void removeObject2() {
    int depth = GetWord();
    display.removeObject2(depth);
  }

  private void defineButton() {
    int i = GetWord();
    if (findCharacter(i) != null)return;
    else {
      SCharacter scharacter = createCharacter(i, -1);
      scharacter.type = 2;
      scharacter.dataPos = super.pos;
      scharacter.bounds = new Rect();
      return;
    }
  }

  void defineButtonExtra(boolean flag) {
    int i = GetWord();
    SCharacter scharacter = findCharacter(i);
    if (scharacter == null || scharacter.type != 2)return;
    if (flag) {
//         scharacter.soundPos = super.pos;
      return;
    }
    else {
      scharacter.cxformPos = super.pos;
      return;
    }
  }

  /*   void defineSound(int i)