File indexing completed on 2024-05-12 04:19:35

 /*
  * Little cms
  * Copyright (C) 1998-2004 Marti Maria <x@uknown.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
  * without limitation the rights to use, copy, modify, merge, publish,
  * distribute, sublicense, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
  *
  * The above copyright notice and this permission notice shall be included
  * in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  * KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  * iccprofile.h
  *
  * This file provides code to read and write International Color Consortium
  * (ICC) device profiles embedded in JFIF JPEG image files.  The ICC has
  * defined a standard format for including such data in JPEG "APP2" markers.
  * The code given here does not know anything about the internal structure
  * of the ICC profile data; it just knows how to put the profile data into
  * a JPEG file being written, or get it back out when reading.
  *
  * This code depends on new features added to the IJG JPEG library as of
  * IJG release 6b; it will not compile or work with older IJG versions.
  *
  * NOTE: this code would need surgery to work on 16-bit-int machines
  * with ICC profiles exceeding 64K bytes in size.  See iccprofile.c
  * for details.
  */
 #ifndef ICCJPEG
 #define ICCJPEG
 
 #include <stdio.h>      /* needed to define "FILE", "NULL" */
 #include "jpeglib.h"
 
 
 /*
  * This routine writes the given ICC profile data into a JPEG file.
  * It *must* be called AFTER calling jpeg_start_compress() and BEFORE
  * the first call to jpeg_write_scanlines().
  * (This ordering ensures that the APP2 marker(s) will appear after the
  * SOI and JFIF or Adobe markers, but before all else.)
  */
 
 extern void write_icc_profile JPP((j_compress_ptr cinfo,
                                    const JOCTET *icc_data_ptr,
                                    unsigned int icc_data_len));
 
 
 /*
  * Reading a JPEG file that may contain an ICC profile requires two steps:
  *
  * 1. After jpeg_create_decompress() but before jpeg_read_header(),
  *    call setup_read_icc_profile().  This routine tells the IJG library
  *    to save in memory any APP2 markers it may find in the file.
  *
  * 2. After jpeg_read_header(), call read_icc_profile() to find out
  *    whether there was a profile and obtain it if so.
  */
 
 
 /*
  * Prepare for reading an ICC profile
  */
 
 extern void setup_read_icc_profile JPP((j_decompress_ptr cinfo));
 
 
 /*
  * See if there was an ICC profile in the JPEG file being read;
  * if so, reassemble and return the profile data.
  *
  * true is returned if an ICC profile was found, false if not.
  * If true is returned, *icc_data_ptr is set to point to the
  * returned data, and *icc_data_len is set to its length.
  *
  * IMPORTANT: the data at **icc_data_ptr has been allocated with malloc()
  * and must be freed by the caller with free() when the caller no longer
  * needs it.  (Alternatively, we could write this routine to use the
  * IJG library's memory allocator, so that the data would be freed implicitly
  * at jpeg_finish_decompress() time.  But it seems likely that many apps
  * will prefer to have the data stick around after decompression finishes.)
  */
 
 extern boolean read_icc_profile JPP((j_decompress_ptr cinfo,
                                      JOCTET **icc_data_ptr,
                                      unsigned int *icc_data_len));
 
 #endif