/// <summary>
/// Reads MatrixData from swf into a byte-array
/// </summary>
/// <remarks>
/// Since were only interested in bytecode actions, theres no need to parse this data.
/// </remarks>
protected byte[] ReadMatrixData()
{
byte[] b = br.ReadBytes(27); // max. byte size of matrix record
BitArray ba = BitParser.GetBitValues(b);
int bitcount = 1;
int Nbits;
if (ba[bitcount - 1])
{
Nbits = (int)BitParser.ReadUInt32(ba, bitcount, 5);
bitcount += 5 + Nbits * 2;
}
bitcount += 1;
if (ba[bitcount - 1])
{
Nbits = (int)BitParser.ReadUInt32(ba, bitcount, 5);
bitcount += 5 + Nbits * 2;
}
Nbits = (int)BitParser.ReadUInt32(ba, bitcount, 5);
bitcount += 5 + Nbits * 2;
int bytecount = Convert.ToInt32(Math.Ceiling((double)bitcount / 8.0));
byte[] matrix = new byte[bytecount];
for (int i = 0; i < bytecount; i++)
{
matrix[i] = b[i];
}
br.BaseStream.Position -= b.Length - bytecount;
return(matrix);
}
/// <summary>
/// Creates a new <see cref="Pix15"/> instance.
/// </summary>
/// <param name="bytes">Bytes.</param>
public Pix15(byte[] bytes)
{
BitArray ba = BitParser.GetBitValues(bytes);
this.red = (byte)BitParser.ReadUInt32(ba, 1, 5);
this.green = (byte)BitParser.ReadUInt32(ba, 6, 5);
this.blue = (byte)BitParser.ReadUInt32(ba, 11, 5);
}
/// <summary>
/// Reads the data from the binary reader.
/// </summary>
/// <param name="binaryReader">Binary reader.</param>
public override void ReadData(BufferedBinaryReader binaryReader)
{
byte[] b = binaryReader.ReadBytes(4);
BitArray ba = BitParser.GetBitValues(b);
blockWidth = (int)BitParser.ReadUInt32(ba, 0, 4);
imageWidth = (int)BitParser.ReadUInt32(ba, 4, 12);
blockHeight = (int)BitParser.ReadUInt32(ba, 16, 4);
imageHeight = (int)BitParser.ReadUInt32(ba, 20, 12);
int nbWBlock = 0;
int nbBlockWInt = imageWidth / blockWidth;
float nbBlockWDec = imageWidth / blockWidth;
if (nbBlockWInt == nbBlockWDec)
{
nbWBlock = nbBlockWInt;
}
else
{
nbWBlock = nbBlockWInt + 1;
}
int nbHBlock = 0;
int nbBlockHInt = imageHeight / blockHeight;
float nbBlockHDec = imageHeight / blockHeight;
if (nbBlockHInt == nbBlockHDec)
{
nbHBlock = nbBlockHInt;
}
else
{
nbHBlock = nbBlockHInt + 1;
}
int nbBlock = nbWBlock * nbHBlock;
if (nbBlock > 0)
{
blocks = new ImageBlock[nbBlock];
for (int i = 0; i < nbBlock; i++)
{
blocks[i] = new ImageBlock();
blocks[i].ReadData(binaryReader);
}
}
}
/// <summary>
/// Reads the data from a binary reader.
/// </summary>
/// <param name="binaryReader">Binary reader.</param>
public void ReadData(BufferedBinaryReader binaryReader)
{
byte[] b = binaryReader.ReadBytes(2);
BitArray ba = BitParser.GetBitValues(b);
dataSize = (int)BitParser.ReadUInt32(ba, 0, 16);
data = null;
if (dataSize != 0)
{
data = new byte[dataSize];
for (int i = 0; i < dataSize; i++)
{
data[i] = binaryReader.ReadByte();
}
}
}
/// <summary>
/// Reads RectData from swf into a byte-array.
/// </summary>
/// <remarks>
/// Since were only interested in bytecode actions, theres no need to parse this data.
/// </remarks>
protected byte[] ReadRectData()
{
byte[] b = br.ReadBytes(17); // max. byte size of rect record
BitArray ba = BitParser.GetBitValues(b);
int Nbits = (int)BitParser.ReadUInt32(ba, 5);
int bitcount = 5 + Nbits * 4;
int bytecount = Convert.ToInt32(Math.Ceiling((double)bitcount / 8.0));
byte[] rect = new byte[bytecount];
for (int i = 0; i < bytecount; i++)
{
rect[i] = b[i];
}
br.BaseStream.Position -= b.Length - bytecount;
return(rect);
}
private Rectangle GetSwfRect(byte[] bytes)
{
BitArray ba = BitParser.GetBitValues(bytes);
int Nbits = (int)BitParser.ReadUInt32(ba, 5);
int index = 5;
int xmin = (int)BitParser.ReadUInt32(ba, index, Nbits) / 20;
index += Nbits;
int xmax = (int)BitParser.ReadUInt32(ba, index, Nbits) / 20;
index += Nbits;
int ymin = (int)BitParser.ReadUInt32(ba, index, Nbits) / 20;
index += Nbits;
int ymax = (int)BitParser.ReadUInt32(ba, index, Nbits) / 20;
return(new Rectangle(xmin, ymin, xmax, ymax));
}
/// <summary>
/// Reads RectData from swf into a byte-array
/// </summary>
/// <remarks>
/// Since were only interested in bytecode actions, theres no need to parse this data.
/// </remarks>
protected byte[] ReadCXFormWithAlphaData()
{
byte[] b = br.ReadBytes(17); // max. byte size of transform record
BitArray ba = BitParser.GetBitValues(b);
bool hasAdd = ba[0];
bool hasMult = ba[1];
int Nbits = (int)BitParser.ReadUInt32(ba, 2, 4);
int bitcount = 6 + (hasAdd ? Nbits * 4 : 0) + (hasMult ? Nbits * 4 : 0);
int bytecount = Convert.ToInt32(Math.Ceiling((double)bitcount / 8.0));
byte[] cfa = new byte[bytecount];
for (int i = 0; i < bytecount; i++)
{
cfa[i] = b[i];
}
br.BaseStream.Position -= b.Length - bytecount;
return(cfa);
}
