/* */ public GIFFileHeader(LEDataInputStream paramLEDataInputStream)
/* */ throws JimiException, IOException
/* */ {
/* 54 */ this.sig[0] = paramLEDataInputStream.readByte();
/* 55 */ this.sig[1] = paramLEDataInputStream.readByte();
/* 56 */ this.sig[2] = paramLEDataInputStream.readByte();
/* */
/* 58 */ if ((this.sig[0] != 71) || (this.sig[1] != 73) || (this.sig[2] != 70)) {
/* 59 */ throw new JimiException("Not a GIF");
/* */ }
/* 61 */ this.ver[0] = paramLEDataInputStream.readByte();
/* 62 */ this.ver[1] = paramLEDataInputStream.readByte();
/* 63 */ this.ver[2] = paramLEDataInputStream.readByte();
/* */
/* 65 */ if ((this.ver[0] != 56)
|| ((this.ver[1] != 55) && (this.ver[1] != 57))
|| (this.ver[2] != 97)) {
/* 66 */ throw new JimiException("Unknown GIF version");
/* */ }
/* 68 */ this.screenWidth = paramLEDataInputStream.readUnsignedShort();
/* 69 */ this.screenHeight = paramLEDataInputStream.readUnsignedShort();
/* 70 */ this.packed = paramLEDataInputStream.readByte();
/* */
/* 72 */ this.backgroundColor = paramLEDataInputStream.readByte();
/* 73 */ this.aspectRatio = paramLEDataInputStream.readByte();
/* */
/* 76 */ this.colorTableNumBits = ((this.packed & 0x7) + 1);
/* */
/* 78 */ if ((this.packed & 0x80) != 0)
/* 79 */ this.colorTable = new GIFColorTable(paramLEDataInputStream, this.colorTableNumBits);
/* */ else /* 81 */ this.colorTable = new GIFColorTable(this.colorTableNumBits);
/* */ }
public GIFColorTable(LEDataInputStream in, int numBitsColorTable) throws IOException {
int i;
int numColors = 1 << numBitsColorTable;
red = new byte[numColors];
green = new byte[numColors];
blue = new byte[numColors];
for (i = 0; i < numColors; ++i) {
red[i] = in.readByte();
green[i] = in.readByte();
blue[i] = in.readByte();
}
}
