gt:         if (blocks != null) {
context: /*
   *  Copyright (C) 2010-2021 JPEXS, All rights reserved.
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 3.0 of the License, or (at your option) any later version.
   * 
   * 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 for more details.
   * 
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library.
   */
  package com.jpexs.decompiler.flash.tags;
  
  import com.jpexs.decompiler.flash.SWF;
  import com.jpexs.decompiler.flash.SWFInputStream;
  import com.jpexs.decompiler.flash.SWFOutputStream;
  import com.jpexs.decompiler.flash.tags.base.SoundStreamHeadTypeTag;
  import com.jpexs.decompiler.flash.timeline.Timeline;
  import com.jpexs.decompiler.flash.types.BasicType;
  import com.jpexs.decompiler.flash.types.annotations.Conditional;
  import com.jpexs.decompiler.flash.types.annotations.EnumValue;
  import com.jpexs.decompiler.flash.types.annotations.Internal;
  import com.jpexs.decompiler.flash.types.annotations.Reserved;
  import com.jpexs.decompiler.flash.types.annotations.SWFType;
  import com.jpexs.decompiler.flash.types.annotations.SWFVersion;
  import com.jpexs.decompiler.flash.types.sound.SoundExportFormat;
  import com.jpexs.decompiler.flash.types.sound.SoundFormat;
  import com.jpexs.helpers.ByteArrayRange;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   *
   * @author JPEXS
   */
  @SWFVersion(from = 1)
  public class SoundStreamHeadTag extends Tag implements SoundStreamHeadTypeTag {
  
      public static final int ID = 18;
  
      public static final String NAME = "SoundStreamHead";
  
      @Reserved
      @SWFType(value = BasicType.UB, count = 4)
      public int reserved;
  
      @SWFType(value = BasicType.UB, count = 2)
      @EnumValue(value = 0, text = "5.5 kHz")
      @EnumValue(value = 1, text = "11 kHz")
      @EnumValue(value = 2, text = "22 kHz")
      @EnumValue(value = 3, text = "44 kHz")
      public int playBackSoundRate;
  
      public boolean playBackSoundSize;
  
      public boolean playBackSoundType;
  
      @SWFType(value = BasicType.UB, count = 4)
      @EnumValue(value = SoundFormat.FORMAT_ADPCM, text = "ADPCM")
      @EnumValue(value = SoundFormat.FORMAT_MP3, text = "MP3", minSwfVersion = 4)
      public int streamSoundCompression;
  
      @SWFType(value = BasicType.UB, count = 2)
      @EnumValue(value = 0, text = "5.5 kHz")
      @EnumValue(value = 1, text = "11 kHz")
      @EnumValue(value = 2, text = "22 kHz")
      @EnumValue(value = 3, text = "44 kHz")
      public int streamSoundRate;
  
      public boolean streamSoundSize;
  
      public boolean streamSoundType;
  
      @SWFType(value = BasicType.UI16)
      public int streamSoundSampleCount;
  
      @Conditional(value = "streamSoundCompression", options = {2})
      public int latencySeek;
  
      @Internal
      private int virtualCharacterId = 0;
  
      /**
       * Constructor
       *
       * @param swf
       */
      public SoundStreamHeadTag(SWF swf) {
          super(swf, ID, NAME, null);
      }
  
      /**
       * Constructor
       *
       * @param sis
       * @param data
       * @throws IOException
       */
      public SoundStreamHeadTag(SWFInputStream sis, ByteArrayRange data) throws IOException {
          super(sis.getSwf(), ID, NAME, data);
          readData(sis, data, 0, false, false, false);
      }
  
      @Override
      public final void readData(SWFInputStream sis, ByteArrayRange data, int level, boolean parallel, boolean skipUnusualTags, boolean lazy) throws IOException {
          reserved = (int) sis.readUB(4, "reserved");
          playBackSoundRate = (int) sis.readUB(2, "playBackSoundRate");
          playBackSoundSize = sis.readUB(1, "playBackSoundSize") == 1;
          playBackSoundType = sis.readUB(1, "playBackSoundType") == 1;
          streamSoundCompression = (int) sis.readUB(4, "streamSoundCompression");
          streamSoundRate = (int) sis.readUB(2, "streamSoundRate");
          streamSoundSize = sis.readUB(1, "streamSoundSize") == 1;
          streamSoundType = sis.readUB(1, "streamSoundType") == 1;
          streamSoundSampleCount = sis.readUI16("streamSoundSampleCount");
          if (streamSoundCompression == 2) {
              latencySeek = sis.readSI16("latencySeek");
          }
      }
  
      /**
       * Gets data bytes
       *
       * @param sos SWF output stream
       * @throws java.io.IOException
       */
      @Override
      public void getData(SWFOutputStream sos) throws IOException {
          sos.writeUB(4, reserved);
          sos.writeUB(2, playBackSoundRate);
          sos.writeUB(1, playBackSoundSize ? 1 : 0);
          sos.writeUB(1, playBackSoundType ? 1 : 0);
          sos.writeUB(4, streamSoundCompression);
          sos.writeUB(2, streamSoundRate);
          sos.writeUB(1, streamSoundSize ? 1 : 0);
          sos.writeUB(1, streamSoundType ? 1 : 0);
          sos.writeUI16(streamSoundSampleCount);
          if (streamSoundCompression == 2) {
              sos.writeSI16(latencySeek);
          }
      }
  
      @Override
      public SoundExportFormat getExportFormat() {
          if (streamSoundCompression == SoundFormat.FORMAT_MP3) {
              return SoundExportFormat.MP3;
          }
          if (streamSoundCompression == SoundFormat.FORMAT_ADPCM) {
              return SoundExportFormat.WAV;
          }
          if (streamSoundCompression == SoundFormat.FORMAT_UNCOMPRESSED_LITTLE_ENDIAN) {
              return SoundExportFormat.WAV;
          }
          if (streamSoundCompression == SoundFormat.FORMAT_UNCOMPRESSED_NATIVE_ENDIAN) {
              return SoundExportFormat.WAV;
          }
          if (streamSoundCompression == SoundFormat.FORMAT_NELLYMOSER || streamSoundCompression == SoundFormat.FORMAT_NELLYMOSER16KHZ || streamSoundCompression == SoundFormat.FORMAT_NELLYMOSER8KHZ) {
              return SoundExportFormat.WAV;
          }
          return SoundExportFormat.FLV;
      }
  
      @Override
      public int getCharacterId() {
          return virtualCharacterId;
      }
  
      @Override
      public void setCharacterId(int characterId) {
          virtualCharacterId = characterId;
      }
  
      @Override
      public void setVirtualCharacterId(int ch) {
          virtualCharacterId = ch;
      }
  
      @Override
      public long getSoundSampleCount() {
          return streamSoundSampleCount;
      }
  
      @Override
      public int getSoundFormatId() {
          return streamSoundCompression;
      }
  
      @Override
      public int getSoundRate() {
          return streamSoundRate;
      }
  
      @Override
      public boolean getSoundSize() {
          return streamSoundSize;
      }
  
      @Override
      public boolean getSoundType() {
          return streamSoundType;
      }
  
      @Override
      public List<SoundStreamBlockTag> getBlocks() {
          Timeline timeline = swf.getTimeline();
          List<SoundStreamBlockTag> ret = timeline.getSoundStreamBlocks(this);
          return ret;
  
      }
  
      @Override
      public boolean importSupported() {
          return false;
      }
  
      @Override
      public boolean setSound(InputStream is, int newSoundFormat) {
          return false;
      }
  
      @Override
      public List<ByteArrayRange> getRawSoundData() {
          List<ByteArrayRange> ret = new ArrayList<>();
          List<SoundStreamBlockTag> blocks = getBlocks();
  