scriptplayer.java

j2me 上面flash播放器。非常值得研究。就是版本只到2.0

        {
        int j = GetWord();
        if (findCharacter(j) != null) return;
        SCharacter scharacter = createCharacter(j,-1);
        if(scharacter == null) return;
        scharacter.type = 5;
        int k = super.script[super.pos++] & 0xff;
        int l = GetDWord();
        Sound sound;
   scharacter.object = sound = new Sound(k, l, super.script, super.pos,flash);
        if (sound == null)
           {
           freeCharacter(j);
           return;
           }
        scharacter.dataPos = super.pos;
        if(sound.CompressFormat() > 16)
           {
           freeCharacter(j);
           return;
           }
        else
           {
           sound.characterTag = j;
           sound.next = streamSound.next;
           streamSound.next = sound;
           return;
           }
        }*/


  private void defineFont() {
    SCharacter scharacter;
    int ID = GetWord();
    scharacter = findCharacter(ID);
    if (scharacter == null) scharacter = createCharacter(ID, -1);
    if (debug) System.out.println("defineFont() " + ID + " ,-1");
    scharacter.type = SCharacter.SCHAR_TYPE_FONT;
    scharacter.bounds = new Rect();
    scharacter.dataPos = super.pos;
    return;
  }

  private void defineFontInfo() {
    int ID, len, i, flags;
    SCharacter scharacter;

    ID = GetWord();
    scharacter = findCharacter(ID);
    if (scharacter == null) scharacter = createCharacter(ID, -1);
    if (debug) System.out.println("defineFontInfo() " + ID + " ,-1");
    len = GetByte();
    for (i = 0; i < len; i++) GetByte(); // skip the font name
    flags = GetByte();
    if ( (flags & 2) == 2) scharacter.fontBold = true;
    if ( (flags & 4) == 4) scharacter.fontItalic = true;
  }

  private void defineText() {
    SCharacter scharacter;

    int ID = GetWord();
    scharacter = findCharacter(ID);
    if (scharacter == null) scharacter = createCharacter(ID, -1);
    if (debug) System.out.println("defineText() " + ID + ", -1");
    scharacter.type = SCharacter.SCHAR_TYPE_TEXT;
    scharacter.bounds = GetRect();
    scharacter.dataPos = super.pos;
    scharacter.matrix = GetMatrix();
    scharacter.glyphBits = GetByte();
    scharacter.advancedBits = GetByte();
  }

  private void ParseHeader() {
    if (scriptErr != 0)
      return;
    if (gotHeader)
      return;
    if (len < 21) {
      return;
    }
    else {
      frame = GetRect();
      frameRate = GetWord() << 8;
      frameDelay = 0x3e80000 / frameRate;
      numFrames = GetWord();
      numFramesCompletePos = startPos = super.pos;
      curFrame = -1;
      gotHeader = true;
      return;
    }
  }

  public void PushData(byte abyte0[], int i) {
    if (scriptErr != 0)
      return;
    int j = 0;
    if (scriptLen < 0) {
      int k = Math.min(8 - headerLen, i);
      System.arraycopy(abyte0, j, headerBuf, headerLen, k);
      j += k;
      i -= k;
      headerLen += k;
      if (headerLen == 8) {
        if (headerBuf[0] != 70 || headerBuf[1] != 87 || headerBuf[2] != 83) {
          scriptErr = -1;
          return;
        }
        version = headerBuf[3];
        scriptLen = headerBuf[4] & 0xff | (headerBuf[5] & 0xff) << 8 |
            (headerBuf[6] & 0xff) << 16 | (headerBuf[7] & 0xff) << 24;
        scriptLen -= 8;
        super.script = new byte[scriptLen];
        if (super.script == null) {
          scriptErr = -2;
          return;
        }
      }
      else {
        return;
      }
    }
    if (len + i > scriptLen)
      i = Math.min(i, scriptLen - len);
    System.arraycopy(abyte0, j, super.script, len, i);
    len += i;
    if (!gotHeader)
      ParseHeader();
    gotData.set();
  }

  /*    private void defineJPEGTables(int i)
      {
          jpegTableLen = i - 2;
          jpegTablePos = super.pos;
      }*/

  /*    private int ImageClassToUse()
      {
          if(imageClassToUse == 0)
   if(("SLAV" + System.getProperty("java.version")).indexOf("SLAV1.0") == -1)
              {
                  imageClassToUse = 1;
              } else
              {
                  imageClassToUse = 3;
                  try
                  {
                      Class.forName("sun.awt.image.ImageDecoder");
                      imageClassToUse = 2;
                  }
                  catch(ClassNotFoundException _ex) { }
              }
          return imageClassToUse;
      }*/

  private void defineBits(int i, int j) {
    int k = GetWord();
    int l = 0;
    int i1 = 0;
    int j1 = 0;
    int k1 = 0;
    if (findCharacter(k) != null)
      return;
    SCharacter scharacter = createCharacter(k, -1);
    if (scharacter == null)
      return;
    scharacter.type = 1;
    scharacter.dataPos = super.pos - 8;
    if (j == 6) {
      j1 = super.pos + 2;
      k1 = i - 4;
      l = jpegTablePos;
      i1 = jpegTableLen;
    }
    else {
      l = super.pos;
      for (int l1 = l; l1 < super.end; l1++) {
        if ( (super.script[l1] & 0xff) != 255 ||
            (super.script[l1 + 1] & 0xff) != 217)
          continue;
        i1 = l1 - l;
        break;
      }

      for (int i2 = l + i1; i2 < super.end; i2++) {
        if ( (super.script[i2] & 0xff) != 255 ||
            (super.script[i2 + 1] & 0xff) != 216)
          continue;
        j1 = i2 + 2;
        k1 = i - 6 - i1;
        break;
      }

    }
    byte abyte0[] = new byte[i1 + k1];
    if (abyte0 != null) {
      System.arraycopy(super.script, l, abyte0, 0, i1);
      System.arraycopy(super.script, j1, abyte0, i1, k1);
      /*            switch(ImageClassToUse())
                  {
                  case 1: // '\001'*/
      scharacter.object = new Bitmap(Image.createImage(abyte0, 0, abyte0.length),
                                     display);
      return;

      /*            case 2: // '\002'
                      try
                      {
       Object obj = Class.forName("ImageSource").newInstance();
                          if(obj != null)
                          {
                              ((ImageSource)obj).SetData(abyte0);
                              ((ImageSource)obj).CreateInputStream();
       Bitmap bitmap = new Bitmap((ImageSource)obj, display);
                              ((ImageSource)obj).DestroyInputStream();
                              scharacter.object = bitmap;
                              return;
                          }
                      }
                      catch(Exception _ex)
                      {
                          scharacter.object = null;
                          return;
                      }
                      break;

                  case 3: // '\003'
                  default:
                      scharacter.object = null;
                      return;
                  }*/
    }
    else {
      scharacter.object = null;
    }
  }

  private int tagCtr = 0;

  private int doTag() {
    if (super.script == null)return -3;
    if (scriptErr != 0)return scriptErr;
    if (atEnd)return 2;
    if (len - super.pos < 2)return 1;
    int i = super.pos;
    int j = GetWord();
    int k = j & 0x3f;
    if (k == 63) {
      if (len - super.pos < 4) {
        super.pos = i;
        return 1;
      }
      k = GetDWord();
    }
    nextPos = super.pos + k;
    super.end = nextPos;
    if (nextPos > len) {
      super.pos = i;
      return 1;
    }
    if ( (debug) && ( (j >> 6) != TAG_SOUNDSTREAMHEAD) &&
        ( (j >> 6) != TAG_SOUNDSTREAMBLOCK)) {
//         if (tagCtr>30) System.exit(0);
      System.out.println("" + (j >> 6));
      tagCtr++;
    }
    switch (j >> 6) {
      case TAG_SOUNDSTREAMHEAD:
      case TAG_SOUNDSTREAMBLOCK:

        // ToDo: add full sound support
        break;
      default:
        System.err.println("Unknown tag " + (j >> 6) +
                           " at ScriptPlayer.doTag()");
        break;
      case TAG_PROTECT:

        // not important for a player
        break;
      case TAG_DEFINEFONTINFO:
      case TAG_DEFINEFONTINFO2:
        defineFontInfo();
        break;
      case 0:
        atEnd = true;
        break;
      case TAG_SHOWFRAME:
        curFrame++;
        break;
      case TAG_DEFINESHAPE:
      case TAG_DEFINESHAPE2:
      case TAG_DEFINESHAPE3:
        defineShape();
        break;
      case TAG_FREE:
        freeCharacter(GetWord());
        break;
      case TAG_PLACEOBJECT:
        placeObject();
        break;
      case TAG_PLACEOBJECT2:
        placeObject2();
        break;
      case TAG_REMOVEOBJECT:
        removeObject();
        break;
      case TAG_REMOVEOBJECT2:
        removeObject2();
        break;
      case TAG_DEFINEBITS:
      case TAG_DEFINEBITSJPEG2:
        defineBits(k, j >> 6);
        break;
      case TAG_JPEGTABLES:
        jpegTableLen = k - 2;
        jpegTablePos = super.pos;
        break;
        /*         case TAG_DEFINESOUND:
                    defineSound(k);
                    break;
                 case TAG_STARTSOUND:
                    StartSound();
                    break;
                 case TAG_DEFINEBUTTONSOUND:
                    defineButtonExtra(true);
                    break;*/
      case TAG_DEFINEBUTTON:
        defineButton();
        break;
      case TAG_DEFINEFONT:
        defineFont();
        break;
      case TAG_DEFINETEXT:
      case TAG_DEFINETEXT2:
        defineText();
        break;
      case TAG_SETBACKGROUNDCOLOR:
        int bgColor = GetColor();
        display.setBackgroundColor(bgColor, 3);
        flash.setBGColor(bgColor);
        break;
      case TAG_DOACTION:
        if (nActions < 16) {
          actionList[nActions] = super.pos;
          nActions++;
        }
        break;
      case TAG_DEFINEBUTTONCXFORM:
        defineButtonExtra(false);
        break;
    }
    super.pos = nextPos;
    return scriptErr;
  }

  public int DrawFrame(int i) {
    if (scriptErr != 0)
      return scriptErr;
    if (!gotHeader)
      return 1;
    if (curFrame > i)
      FreeAll();
    int j;
    for (j = 0; curFrame < i && j == 0; j = doTag());
    return j;
  }

  boolean FrameComplete(int i) {
    if (numFramesComplete >= i)
      return true;
    if (scriptComplete)
      return true;
    if (super.script == null || scriptErr != -3)
      return false;
    SParser sparser = new SParser();
    byte abyte0[] = super.script;
    int k = numFramesCompletePos;
    sparser.script = abyte0;
    sparser.pos = k;
    do {
      int j;
      do {
        if (len - sparser.pos < 2)
          return false;
        j = sparser.GetWord();
        int l = j & 0x3f;
        if (l == 63) {
          if (len - super.pos < 4)
            return false;
          l = sparser.GetDWord();
        }
        sparser.pos += l;
        if (sparser.pos > len)
          return false;
        numFramesCompletePos = sparser.pos;
      }
      while (j >> 6 != 1);
      numFramesComplete++;
    }
    while (numFramesComplete < i);
    return true;
  }

  public void loadScript(InputStream inputstream) {
    ClearScript();
    scriptStream = inputstream;
    Thread thread = new Thread(this);
    thread.setPriority(6);
    thread.start();
  }

  public void run() {
    try {
      byte abyte0[] = new byte[512];
      do {
        int i = scriptStream.read(abyte0);
        if (i < 0)break;
        PushData(abyte0, i);
      }
      while (true);
      scriptStream.close();
    }
    catch (IOException _ex) {}
    scriptStream = null;
    scriptComplete = true;
  }

}