/// <summary>
/// see <see cref="SwfDotNet.IO.Tags.BaseTag">base class</see>
/// </summary>
public override void ReadData(byte version, BufferedBinaryReader binaryReader)
{
RecordHeader rh = new RecordHeader();
rh.ReadData(binaryReader);
int beforePos = (int)binaryReader.BaseStream.Position;
int toReaded = (int)rh.TagLength - 7;
_characterId = binaryReader.ReadUInt16();
_bitmapFormat = binaryReader.ReadByte();
_bitmapWidth = binaryReader.ReadUInt16();
_bitmapHeight = binaryReader.ReadUInt16();
_bitmapColorTableSize = 0;
if (_bitmapFormat == 3)
{
_bitmapColorTableSize = binaryReader.ReadByte();
toReaded--;
}
int imageSize = _bitmapWidth * _bitmapHeight;
if (_bitmapFormat == 3)
{
int uncompressedSize = imageSize + ((_bitmapColorTableSize + 1) * 4);
byte[] uncompressed = new byte[uncompressedSize];
byte[] compressed = binaryReader.ReadBytes(toReaded);
Inflater zipInflator = new Inflater();
zipInflator.SetInput(compressed);
zipInflator.Inflate(uncompressed, 0, uncompressedSize);
_alphaColorMapData = new AlphaColorMapData();
_alphaColorMapData.ColorTableRgb = new RGBA[_bitmapColorTableSize + 1];
int offset = 0;
for (int i = 0; i < _bitmapColorTableSize + 1; i++, offset += 4)
{
byte red = uncompressed[offset];
byte green = uncompressed[offset + 1];
byte blue = uncompressed[offset + 2];
byte alpha = uncompressed[offset + 3];
_alphaColorMapData.ColorTableRgb[i] = new RGBA(red, green, blue, alpha);
}
_alphaColorMapData.ColorMapPixelData = new byte[uncompressedSize - offset];
for (int i = 0; i < uncompressedSize - offset; i++, offset++)
_alphaColorMapData.ColorMapPixelData[i] = uncompressed[offset];
}
else if (_bitmapFormat == 4 || _bitmapFormat == 5)
{
int uncompressedSize = imageSize * 4;
byte[] uncompressed = new byte[uncompressedSize];
byte[] compressed = binaryReader.ReadBytes(toReaded);
Inflater zipInflator = new Inflater();
zipInflator.SetInput(compressed);
zipInflator.Inflate(uncompressed, 0, uncompressedSize);
_alphaBitmapData = new AlphaBitmapData();
_alphaBitmapData.BitmapPixelData = new RGBA[imageSize];
for (int i = 0, j = 0; i < imageSize; i++, j += 4)
{
byte red = uncompressed[j];
byte green = uncompressed[j + 1];
byte blue = uncompressed[j + 2];
byte alpha = uncompressed[j + 3];
_alphaBitmapData.BitmapPixelData[i] = new RGBA(red, green, blue, alpha);
}
}
}
/// <summary>
/// Creates a new <see cref="DefineBitsLossLess2Tag"/> instance.
/// </summary>
/// <param name="characterId">id for this character</param>
/// <param name="bitmapFormat">Format of compressed data</param>
/// <param name="bitmapWidth">Width of bitmap image</param>
/// <param name="bitmapHeight">Height of bitmap image</param>
/// <param name="bitmapColorTableSize">actual number of colors in the color table</param>
/// <param name="zlibBitmapData">zlib compressed bitmap data</param>
public DefineBitsLossLess2Tag(ushort characterId, byte bitmapFormat, ushort bitmapWidth,
ushort bitmapHeight, ushort bitmapColorTableSize, AlphaBitmapData zlibBitmapData)
{
_characterId = characterId;
_bitmapFormat = bitmapFormat;
_bitmapWidth = bitmapWidth;
_bitmapHeight = bitmapHeight;
_bitmapColorTableSize = bitmapColorTableSize;
_alphaBitmapData = zlibBitmapData;
_tagCode = (int)TagCodeEnum.DefineBitsLossLess2;
}
