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−package ar.com.hjg.pngj.chunks;
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−
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−import ar.com.hjg.pngj.ImageInfo;
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−import ar.com.hjg.pngj.PngHelperInternal;
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−import ar.com.hjg.pngj.PngjException;
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−
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−/**
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− * fdAT chunk. For APGN, not PGN standard
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− * <p>
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− * see https://wiki.mozilla.org/APNG_Specification#.60fdAT.60:_The_Frame_Data_Chunk
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− * <p>
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− * This implementation does not support buffering, this should be not managed similar to a IDAT chunk
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− * 
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− */
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−public class PngChunkFDAT extends PngChunkMultiple {
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−  public final static String ID = "fdAT";
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−  private int seqNum;
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−  private byte[] buffer; // normally not allocated - if so, it's the raw data, so it includes the 4bytes seqNum
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−  int datalen; // length of idat data, excluding seqNUm (= chunk.len-4)
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−
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−  public PngChunkFDAT(ImageInfo info) {
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−    super(ID, info);
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−  }
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−
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−  @Override
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−  public ChunkOrderingConstraint getOrderingConstraint() {
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−    return ChunkOrderingConstraint.AFTER_IDAT;
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−  }
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−
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−  @Override
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−  public ChunkRaw createRawChunk() {
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−    if (buffer == null)
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−      throw new PngjException("not buffered");
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−    ChunkRaw c = createEmptyChunk(datalen + 4, false);
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−    c.data = buffer; // shallow copy!
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−    return c;
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−  }
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−
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−  @Override
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−  public void parseFromRaw(ChunkRaw chunk) {
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−    seqNum = PngHelperInternal.readInt4fromBytes(chunk.data, 0);
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−    datalen = chunk.len - 4;
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−    buffer = chunk.data;
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−  }
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−
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−  public int getSeqNum() {
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−    return seqNum;
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−  }
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−
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−  public void setSeqNum(int seqNum) {
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−    this.seqNum = seqNum;
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−  }
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−
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−  public byte[] getBuffer() {
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−    return buffer;
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−  }
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−
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−  public void setBuffer(byte[] buffer) {
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−    this.buffer = buffer;
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−  }
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−
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−  public int getDatalen() {
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−    return datalen;
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−  }
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−
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−  public void setDatalen(int datalen) {
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−    this.datalen = datalen;
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−  }
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−
+
−}