/**
* Copyright 2014 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.opengl.util.texture;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* Utilities for image input and output
*
*/
public class ImageIOUtil {
/**
* Determines the file suffix (i.e the image format) of the given InputStream. The given
* InputStream must return true from markSupported() and support a minimum of 32 bytes
* of read-ahead.
*
* @param stream stream to check
* @return the file suffix if any, otherwise <code>null</code>
* @throws java.io.IOException if an I/O exception occurred
*/
public static String getFileSuffix(InputStream stream) throws IOException {
if (stream == null) {
throw new IOException("Stream was null");
}
if (!(stream instanceof BufferedInputStream)) {
stream = new BufferedInputStream(stream);
}
if (!stream.markSupported()) {
throw new IOException("Can not get non-destructively the image format");
}
if (stream.available() < 32) {
throw new IOException("Not enough bytes to read in order to get the image format");
}
try {
stream.mark(32);
final byte[] b = new byte[32];
stream.read(b);
return getFileSuffix(b);
} finally {
stream.reset();
}
}
/**
* Determines the file suffix (i.e the image format) of the given bytes from the header
* of a file.
*
* @param stream stream to check
* @return the file suffix if any, otherwise <code>null</code>
* @throws java.io.IOException if an I/O exception occurred
*/
public static String getFileSuffix(final byte[] b) {
/**
* http://www.faqs.org/faqs/jpeg-faq/part1/
* http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=54989
*/
if ((b[0] == 0xff && b[1] == 0xd8 /* && b[2] == 0xff */)
|| (b[0] == 0x4A && b[1] == 0x46 && b[2] == 0x49 && b[3] == 0x46)/* JFIF */
|| (b[0] == 0x45 && b[1] == 0x78 && b[2] == 0x69 && b[3] == 0x66)/* EXIF */) {
return TextureIO.JPG;
}
/**
* http://www.libpng.org/pub/png/spec/1.1/PNG-Rationale.html#R.PNG-file-signature
*/
if (b[0] == 0x89 && b[1] == 0x50 && b[2] == 0x4E && b[3] == 0x47 /* 'P' 'N' 'G', ascii code */
&& b[4] == 0x0D && b[5] == 0x0A && b[6] == 0x1A && b[7] == 0x0A) {
return TextureIO.PNG;
}
/**
* Apple Icon Image
*
* 'i' 'c' 'n' 's' ascii code
*/
if (b[0] == 0x69 && b[1] == 0x63 && b[2] == 0x6E && b[3] == 0x73) {
return "icns";
}
/**
* http://www.w3.org/Graphics/GIF/spec-gif87a.txt http://www.w3.org/Graphics/GIF/spec-gif89a.txt
*
* GIF87A or GIF89A ascii code
*/
if (b[0] == 0x47 && b[1] == 0x49 && b[2] == 0x46 && b[3] == 0x38 && (b[4] == 0x37 || b[4] == 0x39)
&& b[5] == 0x61) {
return TextureIO.GIF;
}
/**
* http://www.fileformat.info/format/bmp/spec/e27073c25463436f8a64fa789c886d9c/view.htm
*
* BM ascii code
*/
if (b[0] == 0x42 && b[1] == 0x4d) {
return "bmp";
}
if (b[0] == 0x3A && b[1] == 0xDE && b[2] == 0x68 && b[3] == 0xB1) {
return "dcx";
}
if (b[0] == 0x0A && b[1] == 0x05 && b[2] == 0x01 && b[3] == 0x08) {
return "pcx";
}
/**
* http://netpbm.sourceforge.net/doc/ppm.html
*/
if (b[0] == 0x50 && (b[1] == 0x33 /* plain */|| b[1] == 0x36)) {
return TextureIO.PPM;
}
if (b[0] == 0x38 && b[1] == 0x42 && b[2] == 0x50 && b[3] == 0x53 && b[4] == 0x00 && b[5] == 0x01
&& b[6] == 0x00 && b[7] == 0x00 && b[8] == 0x00 && b[9] == 0x00) {
// Adobe PhotoShop
return "psd";
}
/**
* http://partners.adobe.com/public/developer/en/tiff/TIFF6.pdf
*
* intentionally detects only the little endian tiff images ("II" in the spec)
*/
if (b[0] == 0x49 && b[1] == 0x49 && b[2] == 0x2A && b[3] == 0x00) {
return TextureIO.TIFF;
}
/**
* http://paulbourke.net/dataformats/sgirgb/sgiversion.html
*
* "474 saved as a short" 474 = 0x01DA
*/
if (b[0] == 0x01 && b[1] == 0xDA /* && b[2] == 0x01 && b[3] == 0x01 && b[4] == 0x00 && b[5] == 0x03 */) {
return TextureIO.SGI_RGB;
}
/**
* 'D' 'D' 'S' ' ' ascii code
*/
if (b[0] == 0x44 && b[1] == 0x44 && b[2] == 0x53 && b[3] == 0x20) {
return TextureIO.DDS;
}
/**
* http://netpbm.sourceforge.net/doc/pam.html
*/
if (b[0] == 0x50 && b[1] == 0x37) {
return TextureIO.PAM;
}
/**
* http://netpbm.sourceforge.net/doc/pgm.html
*/
if (b[0] == 0x50 && (b[1] == 0x32 /* plain */|| b[1] == 0x35)) {
return "pgm";
}
/**
* http://netpbm.sourceforge.net/doc/pbm.html
*/
if (b[0] == 0x50 && (b[1] == 0x31 /* plain */|| b[1] == 0x34)) {
return "pbm";
}
if (b[0] == 0x3D && b[1] == 0x02) {
return "3d2";
}
if (b[0] == 0x33 && b[1] == 0x44 && b[2] == 0x4D && b[3] == 0x46) {
return "3dmf";
}
if (b[0] == 0x2A && b[1] == 0x2A && b[2] == 0x54 && b[3] == 0x49 && b[4] == 0x39 && b[5] == 0x32
&& b[6] == 0x2A && b[7] == 0x2A && b[8] == 0x01 && b[9] == 0x00 && b[10] == 0x58
&& b[11] == 0x6E && b[12] == 0x56 && b[13] == 0x69) {
return "92i";
}
if (b[0] == 0x41 && b[1] == 0x4D && b[2] == 0x46 && b[3] == 0x46) {
return "amff";
}
if (b[0] == 0x4A && b[1] == 0x47 && (b[2] == 0x03 || b[2] == 0x04) && b[3] == 0x0E && b[4] == 0x00
&& b[5] == 0x00 && b[6] == 0x00) {
return "art";
}
if (b[0] == 0x73 && b[1] == 0x72 && b[2] == 0x63 && b[3] == 0x64 && b[4] == 0x6F && b[5] == 0x63
&& b[6] == 0x69 && b[7] == 0x64 && b[8] == 0x3A) {
return "cals";
}
if (b[0] == 0x07 && b[1] == 0x20 && b[2] == 0x4D && b[3] == 0x4D) {
return "cam";
}
if (b[0] == 0x20 && b[1] == 0x77 && b[2] == 0x00 && b[3] == 0x02) {
return "cbd";
}
if (b[0] == 0x45 && b[1] == 0x59 && b[2] == 0x45 && b[3] == 0x53) {
return "ce2";
}
if (b[0] == 0x80 && b[1] == 0x2A && b[2] == 0x5F && b[3] == 0xD7 && b[4] == 0x00 && b[5] == 0x00
&& b[6] == 0x08 && b[7] == 0x00 && b[8] == 0x00 && b[9] == 0x00 && b[10] == 0x04
&& b[11] == 0x00 && b[12] == 0x00 && b[13] == 0x00) {
return "cin";
}
if (b[0] == 0x43 && b[1] == 0x61 && b[2] == 0x6C && b[3] == 0x69 && b[4] == 0x67 && b[5] == 0x61
&& b[6] == 0x72 && b[7] == 0x69) {
return "cob";
}
if (b[0] == 0x43 && b[1] == 0x50 && b[2] == 0x54 && b[3] == 0x46 && b[4] == 0x49 && b[5] == 0x4C
&& b[6] == 0x45) {
return "cpt";
}
if (b[0] == 0x43 && b[1] == 0x41 && b[2] == 0x4C && b[3] == 0x41 && b[4] == 0x4D && b[5] == 0x55
&& b[6] == 0x53 && b[7] == 0x43 && b[8] == 0x56 && b[9] == 0x47) {
return "cvg";
}
if (b[0] == 0x56 && b[1] == 0x69 && b[2] == 0x73 && b[3] == 0x74 && b[4] == 0x61 && b[5] == 0x20
&& b[6] == 0x44 && b[7] == 0x45 && b[8] == 0x4D && b[9] == 0x20 && b[10] == 0x46
&& b[11] == 0x69 && b[12] == 0x6C && b[13] == 0x65) {
return "dem";
}
if (b[0] == 0x42 && b[1] == 0x4D && b[2] == 0x36) {
return "dib";
}
if (b[0] == 0x53 && b[1] == 0x44 && b[2] == 0x50 && b[3] == 0x58) {
return "dpx";
}
if (b[0] == 0x01 && b[1] == 0xFF && b[2] == 0x02 && b[3] == 0x04 && b[4] == 0x03 && b[5] == 0x02) {
return "drw";
}
if (b[0] == 0x41 && b[1] == 0x43 && b[2] == 0x31 && b[3] == 0x30) {
return "dwg";
}
if (b[0] == 0x65 && b[1] == 0x02 && b[2] == 0x01 && b[3] == 0x02) {
return "ecw";
}
if (b[0] == 0x01 && b[1] == 0x00 && b[2] == 0x00 && b[3] == 0x00 && b[4] == 0x58 && b[5] == 0x00
&& b[6] == 0x00 && b[7] == 0x00) {
return "emf";
}
if (b[0] == 0xD0 && b[1] == 0xCF && b[2] == 0x11 && b[3] == 0xE0 && b[4] == 0xA1 && b[5] == 0xB1
&& b[6] == 0x1A && b[7] == 0xE1 && b[8] == 0x00) {
return "fpx";
}
if (b[0] == 0x53 && b[1] == 0x49 && b[2] == 0x4D && b[3] == 0x50 && b[4] == 0x4C && b[5] == 0x45
&& b[6] == 0x20 && b[7] == 0x20 && b[8] == 0x3D) {
return "fts";
}
if (b[0] == 0x48 && b[1] == 0x50 && b[2] == 0x48 && b[3] == 0x50 && b[4] == 0x34 && b[5] == 0x38
&& b[6] == 0x2D && b[7] == 0x45 && b[8] == 0x1E && b[9] == 0x2B) {
return "gro";
}
if (b[0] == 0x6E && b[1] == 0x63 && b[2] == 0x6F && b[3] == 0x6C && b[4] == 0x73) {
return "hdr";
}
if (b[0] == 0x35 && b[1] == 0x4B && b[2] == 0x50 && b[3] == 0x35 && b[4] == 0x31 && b[5] == 0x5D
&& b[6] == 0x2A && b[7] == 0x67 && b[8] == 0x72 && b[9] == 0x72 && b[10] == 0x80
&& b[11] == 0x83 && b[12] == 0x85 && b[13] == 0x63) {
return "hru";
}
if (b[0] == 0xEB && b[1] == 0x3C && b[2] == 0x90 && b[3] == 0x2A) {
return "img";
}
if (b[0] == 0x65 && b[1] == 0x6C && b[2] == 0x6D && b[3] == 0x6F) {
return "infini-d";
}
if (b[0] == 0x49 && b[1] == 0x57 && b[2] == 0x43 && b[3] == 0x01) {
return "iwc";
}
if (b[0] == 0x80 && b[1] == 0x3E && b[2] == 0x44 && b[3] == 0x53 && b[4] == 0x43 && b[5] == 0x49
&& b[6] == 0x4D) {
return "j6i";
}
if (b[0] == 0x4A && b[1] == 0x49 && b[2] == 0x46 && b[3] == 0x39 && b[4] == 0x39 && b[5] == 0x61) {
return "jif";
}
if (b[0] == 0x00 && b[1] == 0x00 && b[2] == 0x00 && b[3] == 0x0C && b[4] == 0x6A && b[5] == 0x50
&& b[6] == 0x20 && b[7] == 0x20 && b[8] == 0x0D && b[9] == 0x0A && b[10] == 0x87
&& b[11] == 0x0A) {
return "jp2";
}
if (b[0] == 0x4D && b[1] == 0x4D && b[2] == 0x00 && b[3] == 0x2A) {
return "kdc";
}
if (b[0] == 0x36 && b[1] == 0x34 && b[2] == 0x4C && b[3] == 0x41 && b[4] == 0x4E && b[5] == 0x20
&& b[6] == 0x49 && b[7] == 0x44 && b[8] == 0x42 && b[9] == 0x4C && b[10] == 0x4F
&& b[11] == 0x43 && b[12] == 0x4B) {
return "l64";
}
if (b[0] == 0x46 && b[1] == 0x4F && b[2] == 0x52 && b[3] == 0x4D) {
return "lbm";
}
if (b[0] == 0x49 && b[1] == 0x49 && b[2] == 0x2A && b[3] == 0x00 && b[4] == 0x08 && b[5] == 0x00
&& b[6] == 0x00 && b[7] == 0x00 && b[8] == 0x0E && b[9] == 0x00 && b[10] == 0x00
&& b[11] == 0x01 && b[12] == 0x04 && b[13] == 0x00) {
return "ldf";
}
if (b[0] == 0x57 && b[1] == 0x56 && b[2] == 0x02 && b[3] == 0x00 && b[4] == 0x47 && b[5] == 0x45
&& b[6] == 0x00 && b[7] == 0x0E) {
return "lwf";
}
if (b[0] == 0x37 && b[1] == 0x00 && b[2] == 0x00 && b[3] == 0x10 && b[4] == 0x42 && b[5] == 0x00
&& b[6] == 0x00 && b[7] == 0x10 && b[8] == 0x00 && b[9] == 0x00 && b[10] == 0x00
&& b[11] == 0x00 && b[12] == 0x39 && b[13] == 0x64) {
return "mbm";
}
if (b[0] == 0x4D && b[1] == 0x47 && b[2] == 0x4C) {
return "mgl";
}
if (b[0] == 0x7B && b[1] == 0x0A && b[2] == 0x20 && b[3] == 0x20 && b[4] == 0x43 && b[5] == 0x72
&& b[6] == 0x65 && b[7] == 0x61 && b[8] == 0x74 && b[9] == 0x65 && b[10] == 0x64) {
return "mif";
}
if (b[0] == 0x8A && b[1] == 0x4D && b[2] == 0x4E && b[3] == 0x47 && b[4] == 0x0D && b[5] == 0x0A
&& b[6] == 0x1A && b[7] == 0x0A) {
return "mng";
}
if (b[0] == 0x4D && b[1] == 0x50 && b[2] == 0x46) {
return "mpw";
}
if (b[0] == 0x44 && b[1] == 0x61 && b[2] == 0x6E && b[3] == 0x4D) {
return "msp";
}
if (b[0] == 0x43 && b[1] == 0x36 && b[2] == 0x34) {
return "n64";
}
if (b[0] == 0x6E && b[1] == 0x6E && b[2] == 0x0A && b[3] == 0x00 && b[4] == 0x5E && b[5] == 0x00) {
return "ncr";
}
if (b[0] == 0x6E && b[1] == 0x66 && b[2] == 0x66) {
return "nff";
}
if (b[0] == 0x4E && b[1] == 0x47 && b[2] == 0x47 && b[3] == 0x00 && b[4] == 0x01 && b[5] == 0x00) {
return "ngg";
}
if (b[0] == 0x4E && b[1] == 0x4C && b[2] == 0x4D && b[3] == 0x20 && b[4] == 0x01 && b[5] == 0x02
&& b[6] == 0x00) {
return "nlm";
}
if (b[0] == 0x4E && b[1] == 0x4F && b[2] == 0x4C && b[3] == 0x00 && b[4] == 0x01 && b[5] == 0x00
&& b[6] == 0x06 && b[7] == 0x01 && b[8] == 0x03 && b[9] == 0x00) {
return "nol";
}
if (b[0] == 0x41 && b[1] == 0x48) {
return "pal";
}
if (b[0] == 0x50 && b[1] == 0x41 && b[2] == 0x58) {
return "pax";
}
if (b[0] == 0x63 && b[1] == 0x52 && b[2] == 0x01 && b[3] == 0x01 && b[4] == 0x38 && b[5] == 0x09
&& b[6] == 0x3D && b[7] == 0x00) {
return "pcd";
}
if (b[0] == 0x1B && b[1] == 0x45 && b[2] == 0x1B && b[3] == 0x26 && b[4] == 0x6C && b[5] == 0x30
&& b[6] == 0x4F && b[7] == 0x1B && b[8] == 0x26 && b[9] == 0x6C && b[10] == 0x30
&& b[11] == 0x45 && b[12] == 0x1B && b[13] == 0x26) {
return "pcl";
}
if (b[0] == 0x50 && b[1] == 0x49 && b[2] == 0x58 && b[3] == 0x20) {
return "pix";
}
if (b[0] == 0x50 && b[1] == 0x4F && b[2] == 0x4C && b[3] == 0x20 && b[4] == 0x46 && b[5] == 0x6F
&& b[6] == 0x72 && b[7] == 0x6D && b[8] == 0x61 && b[9] == 0x74) {
return "pol";
}
// Paint Shop Pro
if (b[0] == 0x7E && b[1] == 0x42 && b[2] == 0x4B && b[3] == 0x00) {
return "psp";
}
if (b[0] == 0x50 && b[1] == 0x61 && b[2] == 0x69 && b[3] == 0x6E && b[4] == 0x74 && b[5] == 0x20
&& b[6] == 0x53 && b[7] == 0x68 && b[8] == 0x6F && b[9] == 0x70 && b[10] == 0x20
&& b[11] == 0x50 && b[12] == 0x72 && b[13] == 0x6F && b[14] == 0x20 && b[15] == 0x49
&& b[16] == 0x6D && b[17] == 0x61 && b[18] == 0x67 && b[19] == 0x65 && b[20] == 0x20
&& b[21] == 0x46 && b[22] == 0x69 && b[23] == 0x6C && b[24] == 0x65) {
return "psp";
}
if (b[0] == 0x51 && b[1] == 0x4C && b[2] == 0x49 && b[3] == 0x49 && b[4] == 0x46 && b[5] == 0x41
&& b[6] == 0x58) {
return "qfx";
}
if (b[0] == 0x6D && b[1] == 0x6F && b[2] == 0x6F && b[3] == 0x76) {
return "qtm";
}
if (b[0] == 0x46 && b[1] == 0x4F && b[2] == 0x52 && b[3] == 0x4D && b[4] == 0x41 && b[5] == 0x54
&& b[6] == 0x3D) {
return "rad";
}
if (b[0] == 0x59 && b[1] == 0xA6 && b[2] == 0x6A && b[3] == 0x95) {
return "ras";
}
if (b[0] == 0x52 && b[1] == 0x49 && b[2] == 0x58 && b[3] == 0x33) {
return "rix";
}
if (b[0] == 0x23 && b[1] == 0x20 && b[2] == 0x24 && b[3] == 0x49 && b[4] == 0x64 && b[5] == 0x3A
&& b[6] == 0x20) {
return "sid";
}
if (b[0] == 0x41 && b[1] == 0x75 && b[2] == 0x74 && b[3] == 0x6F && b[4] == 0x43 && b[5] == 0x41
&& b[6] == 0x44 && b[7] == 0x20 && b[8] == 0x53 && b[9] == 0x6C && b[10] == 0x69
&& b[11] == 0x64 && b[12] == 0x65) {
return "sld";
}
if (b[0] == 0x53 && b[1] == 0x74 && b[2] == 0x6F && b[3] == 0x72 && b[4] == 0x6D && b[5] == 0x33
&& b[6] == 0x44) {
return "sod";
}
if (b[0] == 0xFA && b[1] == 0xDE && b[2] == 0xBA && b[3] == 0xBE && b[4] == 0x01 && b[5] == 0x01) {
return "wic";
}
if (b[0] == 0xD3 && b[1] == 0x23 && b[2] == 0x00 && b[3] == 0x00 && b[4] == 0x03 && b[5] == 0x00
&& b[6] == 0x00 && b[7] == 0x00) {
return "wlm";
}
if (b[0] == 0xD7 && b[1] == 0xCD && b[2] == 0xC6 && b[3] == 0x9A) {
return "wmf";
}
if (b[0] == 0xFF && b[1] == 0x57 && b[2] == 0x50 && b[3] == 0x43 && b[4] == 0x10) {
return "wpg";
}
if (b[0] == 0x23 && b[1] == 0x56 && b[2] == 0x52 && b[3] == 0x4D && b[4] == 0x4C && b[5] == 0x20
&& b[6] == 0x56 && b[7] == 0x32 && b[8] == 0x2E && b[9] == 0x30) {
return "wrl";
}
if (b[0] == 0x23 && b[1] == 0x64 && b[2] == 0x65 && b[3] == 0x66 && b[4] == 0x69 && b[5] == 0x6E
&& b[6] == 0x65) {
return "xbm";
}
if (b[0] == 0x2F && b[1] == 0x2A && b[2] == 0x20 && b[3] == 0x58 && b[4] == 0x50 && b[5] == 0x4D
&& b[6] == 0x20 && b[7] == 0x2A && b[8] == 0x2F) {
return "xpm";
}
return null;
}
}