diff options
Diffstat (limited to 'src/jake2/imageio/PCX.java')
| -rw-r--r-- | src/jake2/imageio/PCX.java | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/jake2/imageio/PCX.java b/src/jake2/imageio/PCX.java new file mode 100644 index 0000000..eb71465 --- /dev/null +++ b/src/jake2/imageio/PCX.java @@ -0,0 +1,229 @@ +/* + * Created on Nov 18, 2003 + * + */ +package jake2.imageio; + +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/** + * @author cwei + * + */ +public class PCX { + + public static final int HEADER_SIZE = 128; + + /** + * <code> + typedef struct + { + char manufacturer; + char version; + char encoding; + char bits_per_pixel; + unsigned short xmin,ymin,xmax,ymax; + unsigned short horzRes,vertRes; + unsigned char palette[48]; + char reserved; + char color_planes; + unsigned short bytes_per_line; + unsigned short palette_type; + char filler[58]; + unsigned char data; // unbounded + } pcx_t; + + </code> + */ + public static class Header { + + // size of byte arrays + static final int PALETTE_SIZE = 48; + static final int FILLER_SIZE = 58; + + byte manufacturer; + byte version; + byte encoding; + byte bitsPerPixel; + int xmin, ymin, xmax, ymax; // unsigned short + int horzRes, vertRes; // unsigned short + byte[] palette; //unsigned byte + byte reserved; + byte colorPlanes; + int bytesPerLine; // unsigned short + int paletteType; // unsigned short + byte[] filler; + + + + public Header(byte[] headerBytes) { + if (headerBytes == null || headerBytes.length != 128) { + throw new IllegalArgumentException("invalid quake2 pcx header"); + } + + ByteBuffer b = ByteBuffer.wrap(headerBytes); + // is stored as little endian + b.order(ByteOrder.LITTLE_ENDIAN); + + // fill header + manufacturer = b.get(); + version = b.get(); + encoding = b.get(); + bitsPerPixel = b.get(); + xmin = b.getShort() & 0xffff; + ymin = b.getShort() & 0xffff; + xmax = b.getShort() & 0xffff; + ymax = b.getShort() & 0xffff; + horzRes = b.getShort() & 0xffff; + vertRes = b.getShort() & 0xffff; + b.get(palette = new byte[PALETTE_SIZE]); + reserved = b.get(); + colorPlanes = b.get(); + bytesPerLine = b.getShort() & 0xffff; + paletteType = b.getShort() & 0xffff; + b.get(filler = new byte[FILLER_SIZE]); + + // check some attributes + checkHeader(); + } + + private void checkHeader() { + + if (this.getManufacturer() != 0x0a + || this.getVersion() != 5 + || this.getEncoding() != 1 + || this.getBitsPerPixel() != 8 + || this.getXmax() >= 640 + || this.getYmax() >= 480) { + throw new IllegalArgumentException("invalid quake2 pcx header"); + } + } + + /** + * @return + */ + public byte getBitsPerPixel() { + return bitsPerPixel; + } + + /** + * @return + */ + public int getBytesPerLine() { + return bytesPerLine; + } + + /** + * @return + */ + public byte getColorPlanes() { + return colorPlanes; + } + + /** + * @return + */ + public byte getEncoding() { + return encoding; + } + + /** + * @return + */ + public byte[] getFiller() { + return filler; + } + + /** + * @return + */ + public int getHeight() { + return ymax - ymin + 1; + } + + /** + * @return + */ + public byte getManufacturer() { + return manufacturer; + } + + /** + * @return + */ + public byte[] getPalette() { + return palette; + } + + /** + * @return + */ + public int getPaletteType() { + return paletteType; + } + + /** + * @return + */ + public byte getReserved() { + return reserved; + } + + /** + * @return + */ + public byte getVersion() { + return version; + } + + /** + * @return + */ + public int getWidth() { + return xmax - xmin + 1; + } + + /** + * @return + */ + public int getXmax() { + return xmax; + } + + /** + * @return + */ + public int getXmin() { + return xmin; + } + + /** + * @return + */ + public int getYmax() { + return ymax; + } + + /** + * @return + */ + public int getYmin() { + return ymin; + } + /** + * @return + */ + public int getHorzRes() { + return horzRes; + } + + /** + * @return + */ + public int getVertRes() { + return vertRes; + } + + } +}
\ No newline at end of file |