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Diffstat (limited to 'Build/source/texk/web2c/xetexdir/jpegimage.h')
-rw-r--r-- | Build/source/texk/web2c/xetexdir/jpegimage.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/xetexdir/jpegimage.h b/Build/source/texk/web2c/xetexdir/jpegimage.h new file mode 100644 index 00000000000..03ef4ea56a3 --- /dev/null +++ b/Build/source/texk/web2c/xetexdir/jpegimage.h @@ -0,0 +1,166 @@ +/****************************************************************************\ + Part of the XeTeX typesetting system + copyright (c) 1994-2006 by SIL International + written by Jonathan Kew + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +\****************************************************************************/ + +/* this file is derived from the dvipdfmx project; + the original header follows... */ + +/* $Header: /home/cvsroot/dvipdfmx/src/jpegimage.h,v 1.2 2004/03/11 11:50:21 hirata Exp $ + + This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks. + + Copyright (C) 2002 by Jin-Hwan Cho and Shunsaku Hirata, + the dvipdfmx project team <dvipdfmx@project.ktug.or.kr> + + Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +*/ + +#ifndef _JPEGIMAGE_H_ +#define _JPEGIMAGE_H_ + +#include "mfileio.h" + +/* JPEG Markers */ +typedef enum { + JM_SOF0 = 0xc0, + JM_SOF1 = 0xc1, + JM_SOF2 = 0xc2, + JM_SOF3 = 0xc3, + JM_SOF5 = 0xc5, + JM_DHT = 0xc4, + JM_SOF6 = 0xc6, + JM_SOF7 = 0xc7, + JM_SOF9 = 0xc9, + JM_SOF10 = 0xca, + JM_SOF11 = 0xcb, + JM_DAC = 0xcc, + JM_SOF13 = 0xcd, + JM_SOF14 = 0xce, + JM_SOF15 = 0xcf, + + JM_RST0 = 0xd0, + JM_RST1 = 0xd1, + JM_RST2 = 0xd2, + JM_RST3 = 0xd3, + JM_RST4 = 0xd4, + JM_RST5 = 0xd5, + JM_RST6 = 0xd6, + JM_RST7 = 0xd7, + + JM_SOI = 0xd8, + JM_EOI = 0xd9, + JM_SOS = 0xda, + JM_DQT = 0xdb, + JM_DNL = 0xdc, + JM_DRI = 0xdd, + JM_DHP = 0xde, + JM_EXP = 0xdf, + + JM_APP0 = 0xe0, + JM_APP2 = 0xe2, + JM_APP14 = 0xee, + JM_APP15 = 0xef, + + JM_COM = 0xfe +} JPEG_marker; + +typedef enum { + JS_APPn_JFIF, + JS_APPn_ADOBE, + JS_APPn_ICC +} JPEG_APPn_sig; + +struct JPEG_APPn_JFIF /* APP0 */ +{ + unsigned short version; + unsigned char units; /* 0: only aspect ratio + * 1: dots per inch + * 2: dots per cm + */ + unsigned short Xdensity; + unsigned short Ydensity; + unsigned char Xthumbnail; + unsigned char Ythumbnail; + unsigned char *thumbnail; /* Thumbnail data. */ +}; + +struct JPEG_APPn_ICC /* APP2 */ +{ + unsigned char seq_id; + unsigned char num_chunks; + unsigned char *chunk; + + /* Length of ICC profile data in this chunk. */ + unsigned short length; +}; + +struct JPEG_APPn_Adobe /* APP14 */ +{ + unsigned short version; + unsigned short flag0; + unsigned short flag1; + unsigned char transform; /* color transform code */ +}; + +struct JPEG_ext +{ + JPEG_marker marker; + JPEG_APPn_sig app_sig; + void *app_data; +}; + +#define MAX_COUNT 1024 +struct JPEG_info +{ + unsigned short height; + unsigned short width; + + unsigned char bits_per_component; + unsigned char num_components; + + double xdpi; + double ydpi; + + /* Application specific extensions */ + int flags; + int num_appn, max_appn; + struct JPEG_ext *appn; + + /* Skip chunks not necessary. */ + char skipbits[MAX_COUNT / 8 + 1]; +}; + +extern int check_for_jpeg(FILE *fp); +extern int JPEG_scan_file(struct JPEG_info *info, FILE *fp); + +#endif /* _JPEGIMAGE_H_ */ |