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428
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1 /* EImage-specific Lisp objects.
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2 Copyright (C) 1993, 1994, 1998 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Board of Trustees, University of Illinois.
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4 Copyright (C) 1995 Tinker Systems
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2367
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5 Copyright (C) 1995, 1996, 2001, 2002, 2004 Ben Wing
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428
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6 Copyright (C) 1995 Sun Microsystems
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7
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8 This file is part of XEmacs.
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9
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10 XEmacs is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU General Public License as published by the
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12 Free Software Foundation; either version 2, or (at your option) any
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13 later version.
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14
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15 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with XEmacs; see the file COPYING. If not, write to
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22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 Boston, MA 02111-1307, USA. */
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24
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25 /* Synched up with: Not in FSF. */
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26
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27 /* Original author: Jamie Zawinski for 19.8
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28 font-truename stuff added by Jamie Zawinski for 19.10
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29 subwindow support added by Chuck Thompson
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30 additional XPM support added by Chuck Thompson
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31 initial X-Face support added by Stig
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32 rewritten/restructured by Ben Wing for 19.12/19.13
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33 GIF/JPEG support added by Ben Wing for 19.14
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34 PNG support added by Bill Perry for 19.14
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35 Improved GIF/JPEG support added by Bill Perry for 19.14
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36 Cleanup/simplification of error handling by Ben Wing for 19.14
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37 Pointer/icon overhaul, more restructuring by Ben Wing for 19.14
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38 GIF support changed to external Gifreader lib by Jareth Hein for 21.0
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39 Many changes for color work and optimizations by Jareth Hein for 21.0
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40 Switch of GIF/JPEG/PNG to new EImage intermediate code by Jareth Hein for 21.0
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41 TIFF code by Jareth Hein for 21.0
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42 Generalization for ms-windows by Andy Piper for 21.0
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43 TODO:
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44 Convert images.el to C and stick it in here?
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45 */
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46
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47 #include <config.h>
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48 #include "lisp.h"
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49 #include "lstream.h"
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50 #include "console.h"
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872
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51 #include "device-impl.h"
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428
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52 #include "faces.h"
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53 #include "glyphs.h"
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872
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54 #include "objects-impl.h"
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428
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55
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56 #include "buffer.h"
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57 #include "frame.h"
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58 #include "opaque.h"
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442
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59 #include "window.h"
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428
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60
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61 #include "sysfile.h"
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62
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63 #ifdef HAVE_PNG
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1743
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64
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65 BEGIN_C_DECLS
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66
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647
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67 #define message message_ /* Yuck */
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428
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68 #include <png.h>
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647
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69 #undef message
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1743
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70
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71 END_C_DECLS
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72
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428
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73 #else
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74 #include <setjmp.h>
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75 #endif
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76 #include "file-coding.h"
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77
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78 #ifdef HAVE_TIFF
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79 DEFINE_IMAGE_INSTANTIATOR_FORMAT (tiff);
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80 Lisp_Object Qtiff;
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81 #endif
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82
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83 #ifdef HAVE_JPEG
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84 DEFINE_IMAGE_INSTANTIATOR_FORMAT (jpeg);
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85 Lisp_Object Qjpeg;
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86 #endif
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87
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88 #ifdef HAVE_GIF
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89 DEFINE_IMAGE_INSTANTIATOR_FORMAT (gif);
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90 Lisp_Object Qgif;
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91 #endif
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92
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93 #ifdef HAVE_PNG
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94 DEFINE_IMAGE_INSTANTIATOR_FORMAT (png);
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95 Lisp_Object Qpng;
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96 #endif
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97
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98
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99 #ifdef HAVE_JPEG
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100
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101 /**********************************************************************
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102 * JPEG *
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103 **********************************************************************/
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104
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1743
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105 BEGIN_C_DECLS
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106
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2500
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107 #ifdef WIN32_NATIVE
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2563
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108 /* #### Yuck! More horrifitude. tiffio.h, below, includes <windows.h>,
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109 which defines INT32 and INT16, the former differently and incompatibly
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110 from jmorecfg.h, included by jpeglib.h. We can disable the stuff in
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111 jmorecfg.h by defining XMD_H (clever, huh?); then we define these
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112 typedefs the way that <windows.h> wants them (which is more correct,
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113 anyway; jmorecfg.h defines INT32 as `long'). */
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2500
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114 #define XMD_H
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115 typedef signed int INT32;
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116 typedef signed short INT16;
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117 #endif
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118
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428
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119 #include <jpeglib.h>
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120 #include <jerror.h>
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1743
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121
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122 END_C_DECLS
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428
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123
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124 /*#define USE_TEMP_FILES_FOR_JPEG_IMAGES 1*/
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125 static void
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126 jpeg_validate (Lisp_Object instantiator)
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127 {
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128 file_or_data_must_be_present (instantiator);
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129 }
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130
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131 static Lisp_Object
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442
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132 jpeg_normalize (Lisp_Object inst, Lisp_Object console_type,
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2286
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133 Lisp_Object UNUSED (dest_mask))
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428
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134 {
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135 return simple_image_type_normalize (inst, console_type, Qjpeg);
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136 }
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137
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138 static int
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139 jpeg_possible_dest_types (void)
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140 {
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141 return IMAGE_COLOR_PIXMAP_MASK;
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142 }
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143
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144 /* To survive the otherwise baffling complexity of making sure
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145 everything gets cleaned up in the presence of an error, we
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146 use an unwind_protect(). */
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147
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148 struct jpeg_unwind_data
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149 {
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150 /* Stream that we need to close */
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151 FILE *instream;
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152 /* Object that holds state info for JPEG decoding */
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153 struct jpeg_decompress_struct *cinfo_ptr;
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154 /* EImage data */
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2367
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155 Binbyte *eimage;
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428
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156 };
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157
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158 static Lisp_Object
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159 jpeg_instantiate_unwind (Lisp_Object unwind_obj)
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160 {
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161 struct jpeg_unwind_data *data =
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162 (struct jpeg_unwind_data *) get_opaque_ptr (unwind_obj);
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163
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164 free_opaque_ptr (unwind_obj);
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165 if (data->cinfo_ptr)
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166 jpeg_destroy_decompress (data->cinfo_ptr);
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167
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168 if (data->instream)
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771
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169 retry_fclose (data->instream);
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428
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170
|
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1726
|
171 if (data->eimage)
|
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2367
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172 xfree (data->eimage, Binbyte *);
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428
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173
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174 return Qnil;
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175 }
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176
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177 /*
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178 * ERROR HANDLING:
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179 *
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180 * The JPEG library's standard error handler (jerror.c) is divided into
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181 * several "methods" which you can override individually. This lets you
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182 * adjust the behavior without duplicating a lot of code, which you might
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183 * have to update with each future release.
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184 *
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185 * Our example here shows how to override the "error_exit" method so that
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186 * control is returned to the library's caller when a fatal error occurs,
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187 * rather than calling exit() as the standard error_exit method does.
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188 *
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189 * We use C's setjmp/longjmp facility to return control. This means that the
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190 * routine which calls the JPEG library must first execute a setjmp() call to
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191 * establish the return point. We want the replacement error_exit to do a
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192 * longjmp(). But we need to make the setjmp buffer accessible to the
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193 * error_exit routine. To do this, we make a private extension of the
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194 * standard JPEG error handler object. (If we were using C++, we'd say we
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195 * were making a subclass of the regular error handler.)
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196 *
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197 * Here's the extended error handler struct:
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198 */
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199
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200 struct my_jpeg_error_mgr
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201 {
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202 struct jpeg_error_mgr pub; /* "public" fields */
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203 jmp_buf setjmp_buffer; /* for return to caller */
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204 };
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205
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206 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61)
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207 METHODDEF(void)
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208 #else
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209 METHODDEF void
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210 #endif
|
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2286
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211 our_init_source (j_decompress_ptr UNUSED (cinfo))
|
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428
|
212 {
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|
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213 }
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214
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215 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61)
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216 METHODDEF(boolean)
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217 #else
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218 METHODDEF boolean
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219 #endif
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220 our_fill_input_buffer (j_decompress_ptr cinfo)
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221 {
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222 /* Insert a fake EOI marker */
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223 struct jpeg_source_mgr *src = cinfo->src;
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224 static JOCTET buffer[2];
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225
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226 buffer[0] = (JOCTET) 0xFF;
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227 buffer[1] = (JOCTET) JPEG_EOI;
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228
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229 src->next_input_byte = buffer;
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230 src->bytes_in_buffer = 2;
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231 return TRUE;
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232 }
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233
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|
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234 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61)
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235 METHODDEF(void)
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236 #else
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237 METHODDEF void
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238 #endif
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239 our_skip_input_data (j_decompress_ptr cinfo, long num_bytes)
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240 {
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241 struct jpeg_source_mgr *src = NULL;
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242
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243 src = (struct jpeg_source_mgr *) cinfo->src;
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244
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|
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245 if (!src)
|
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647
|
246 return;
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|
247 else if (num_bytes > (long) src->bytes_in_buffer)
|
|
428
|
248 {
|
|
647
|
249 ERREXIT (cinfo, JERR_INPUT_EOF);
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|
|
250 /*NOTREACHED*/
|
|
|
251 }
|
|
428
|
252
|
|
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253 src->bytes_in_buffer -= num_bytes;
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254 src->next_input_byte += num_bytes;
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255 }
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256
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|
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257 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61)
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|
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258 METHODDEF(void)
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259 #else
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260 METHODDEF void
|
|
|
261 #endif
|
|
2286
|
262 our_term_source (j_decompress_ptr UNUSED (cinfo))
|
|
428
|
263 {
|
|
|
264 }
|
|
|
265
|
|
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266 typedef struct
|
|
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267 {
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|
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268 struct jpeg_source_mgr pub;
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|
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269 } our_jpeg_source_mgr;
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|
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270
|
|
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271 static void
|
|
665
|
272 jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, Bytecount len)
|
|
428
|
273 {
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|
|
274 struct jpeg_source_mgr *src;
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|
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275
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|
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276 if (cinfo->src == NULL)
|
|
|
277 { /* first time for this JPEG object? */
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278 cinfo->src = (struct jpeg_source_mgr *)
|
|
|
279 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
|
|
|
280 sizeof(our_jpeg_source_mgr));
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281 src = (struct jpeg_source_mgr *) cinfo->src;
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|
|
282 src->next_input_byte = data;
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|
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283 }
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284 src = (struct jpeg_source_mgr *) cinfo->src;
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285 src->init_source = our_init_source;
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286 src->fill_input_buffer = our_fill_input_buffer;
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287 src->skip_input_data = our_skip_input_data;
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288 src->resync_to_restart = jpeg_resync_to_restart; /* use default method */
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289 src->term_source = our_term_source;
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290 src->bytes_in_buffer = len;
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291 src->next_input_byte = data;
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|
|
292 }
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293
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294 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61)
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295 METHODDEF(void)
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296 #else
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297 METHODDEF void
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|
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298 #endif
|
|
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299 my_jpeg_error_exit (j_common_ptr cinfo)
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|
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300 {
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|
|
301 /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
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302 struct my_jpeg_error_mgr *myerr = (struct my_jpeg_error_mgr *) cinfo->err;
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|
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303
|
|
|
304 /* Return control to the setjmp point */
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305 longjmp (myerr->setjmp_buffer, 1);
|
|
|
306 }
|
|
|
307
|
|
|
308 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61)
|
|
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309 METHODDEF(void)
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|
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310 #else
|
|
|
311 METHODDEF void
|
|
|
312 #endif
|
|
|
313 my_jpeg_output_message (j_common_ptr cinfo)
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|
|
314 {
|
|
771
|
315 Extbyte buffer[JMSG_LENGTH_MAX];
|
|
867
|
316 Ibyte *intbuf;
|
|
428
|
317
|
|
|
318 /* Create the message */
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|
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319 (*cinfo->err->format_message) (cinfo, buffer);
|
|
771
|
320 EXTERNAL_TO_C_STRING (buffer, intbuf, Qnative);
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|
|
321 warn_when_safe (Qjpeg, Qinfo, "%s", intbuf);
|
|
428
|
322 }
|
|
|
323
|
|
|
324 /* The code in this routine is based on example.c from the JPEG library
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|
|
325 source code and from gif_instantiate() */
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326 static void
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327 jpeg_instantiate (Lisp_Object image_instance, Lisp_Object instantiator,
|
|
2286
|
328 Lisp_Object UNUSED (pointer_fg),
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|
|
329 Lisp_Object UNUSED (pointer_bg),
|
|
428
|
330 int dest_mask, Lisp_Object domain)
|
|
|
331 {
|
|
440
|
332 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance);
|
|
428
|
333 /* It is OK for the unwind data to be local to this function,
|
|
|
334 because the unwind-protect is always executed when this
|
|
|
335 stack frame is still valid. */
|
|
|
336 struct jpeg_unwind_data unwind;
|
|
|
337 int speccount = specpdl_depth ();
|
|
|
338
|
|
|
339 /* This struct contains the JPEG decompression parameters and pointers to
|
|
|
340 * working space (which is allocated as needed by the JPEG library).
|
|
|
341 */
|
|
|
342 struct jpeg_decompress_struct cinfo;
|
|
|
343 /* We use our private extension JPEG error handler.
|
|
|
344 * Note that this struct must live as long as the main JPEG parameter
|
|
|
345 * struct, to avoid dangling-pointer problems.
|
|
|
346 */
|
|
|
347 struct my_jpeg_error_mgr jerr;
|
|
|
348
|
|
|
349 /* Step -1: First record our unwind-protect, which will clean up after
|
|
|
350 any exit, normal or not */
|
|
|
351
|
|
|
352 xzero (unwind);
|
|
|
353 record_unwind_protect (jpeg_instantiate_unwind, make_opaque_ptr (&unwind));
|
|
|
354
|
|
|
355 /* Step 1: allocate and initialize JPEG decompression object */
|
|
|
356
|
|
|
357 /* We set up the normal JPEG error routines, then override error_exit. */
|
|
|
358 cinfo.err = jpeg_std_error (&jerr.pub);
|
|
|
359 jerr.pub.error_exit = my_jpeg_error_exit;
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|
|
360 jerr.pub.output_message = my_jpeg_output_message;
|
|
|
361
|
|
|
362 /* Establish the setjmp return context for my_error_exit to use. */
|
|
|
363 if (setjmp (jerr.setjmp_buffer))
|
|
|
364 {
|
|
|
365 /* If we get here, the JPEG code has signaled an error.
|
|
|
366 * We need to clean up the JPEG object, close the input file, and return.
|
|
|
367 */
|
|
|
368
|
|
|
369 {
|
|
|
370 Lisp_Object errstring;
|
|
771
|
371 Extbyte buffer[JMSG_LENGTH_MAX];
|
|
428
|
372
|
|
|
373 /* Create the message */
|
|
|
374 (*cinfo.err->format_message) ((j_common_ptr) &cinfo, buffer);
|
|
771
|
375 errstring = build_ext_string (buffer, Qnative);
|
|
428
|
376
|
|
|
377 signal_image_error_2 ("JPEG decoding error",
|
|
|
378 errstring, instantiator);
|
|
|
379 }
|
|
|
380 }
|
|
|
381
|
|
|
382 /* Now we can initialize the JPEG decompression object. */
|
|
|
383 jpeg_create_decompress (&cinfo);
|
|
|
384 unwind.cinfo_ptr = &cinfo;
|
|
|
385
|
|
|
386 /* Step 2: specify data source (eg, a file) */
|
|
|
387
|
|
|
388 {
|
|
|
389 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data);
|
|
2367
|
390 const Binbyte *bytes;
|
|
665
|
391 Bytecount len;
|
|
428
|
392
|
|
|
393 /* #### This is a definite problem under Mule due to the amount of
|
|
|
394 stack data it might allocate. Need to be able to convert and
|
|
|
395 write out to a file. */
|
|
440
|
396 TO_EXTERNAL_FORMAT (LISP_STRING, data, ALLOCA, (bytes, len), Qbinary);
|
|
428
|
397 jpeg_memory_src (&cinfo, (JOCTET *) bytes, len);
|
|
|
398 }
|
|
|
399
|
|
|
400 /* Step 3: read file parameters with jpeg_read_header() */
|
|
|
401
|
|
|
402 jpeg_read_header (&cinfo, TRUE);
|
|
|
403 /* We can ignore the return value from jpeg_read_header since
|
|
|
404 * (a) suspension is not possible with the stdio data source, and
|
|
|
405 * (b) we passed TRUE to reject a tables-only JPEG file as an error.
|
|
|
406 * See libjpeg.doc for more info.
|
|
|
407 */
|
|
|
408
|
|
|
409 {
|
|
|
410 int jpeg_gray = 0; /* if we're dealing with a grayscale */
|
|
|
411 /* Step 4: set parameters for decompression. */
|
|
|
412
|
|
|
413 /* Now that we're using EImages, send all data as 24bit color.
|
|
|
414 The backend routine will take care of any necessary reductions.
|
|
|
415 We do have to handle the grayscale case ourselves, however. */
|
|
|
416 if (cinfo.jpeg_color_space == JCS_GRAYSCALE)
|
|
|
417 {
|
|
|
418 cinfo.out_color_space = JCS_GRAYSCALE;
|
|
|
419 jpeg_gray = 1;
|
|
|
420 }
|
|
|
421 else
|
|
|
422 {
|
|
|
423 /* we're relying on the jpeg driver to do any other conversions,
|
|
|
424 or signal an error if the conversion isn't supported. */
|
|
|
425 cinfo.out_color_space = JCS_RGB;
|
|
|
426 }
|
|
|
427
|
|
|
428 /* Step 5: Start decompressor */
|
|
|
429 jpeg_start_decompress (&cinfo);
|
|
|
430
|
|
|
431 /* Step 6: Read in the data and put into EImage format (8bit RGB triples)*/
|
|
|
432
|
|
2367
|
433 unwind.eimage =
|
|
|
434 xnew_binbytes (cinfo.output_width * cinfo.output_height * 3);
|
|
428
|
435 if (!unwind.eimage)
|
|
|
436 signal_image_error("Unable to allocate enough memory for image", instantiator);
|
|
|
437
|
|
|
438 {
|
|
|
439 JSAMPARRAY row_buffer; /* Output row buffer */
|
|
|
440 JSAMPLE *jp;
|
|
|
441 int row_stride; /* physical row width in output buffer */
|
|
2367
|
442 Binbyte *op = unwind.eimage;
|
|
428
|
443
|
|
|
444 /* We may need to do some setup of our own at this point before reading
|
|
|
445 * the data. After jpeg_start_decompress() we have the correct scaled
|
|
|
446 * output image dimensions available
|
|
|
447 * We need to make an output work buffer of the right size.
|
|
|
448 */
|
|
|
449 /* JSAMPLEs per row in output buffer. */
|
|
|
450 row_stride = cinfo.output_width * cinfo.output_components;
|
|
|
451 /* Make a one-row-high sample array that will go away when done
|
|
|
452 with image */
|
|
|
453 row_buffer = ((*cinfo.mem->alloc_sarray)
|
|
|
454 ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1));
|
|
|
455
|
|
|
456 /* Here we use the library's state variable cinfo.output_scanline as the
|
|
|
457 * loop counter, so that we don't have to keep track ourselves.
|
|
|
458 */
|
|
|
459 while (cinfo.output_scanline < cinfo.output_height)
|
|
|
460 {
|
|
|
461 int i;
|
|
|
462
|
|
|
463 /* jpeg_read_scanlines expects an array of pointers to scanlines.
|
|
|
464 * Here the array is only one element long, but you could ask for
|
|
|
465 * more than one scanline at a time if that's more convenient.
|
|
|
466 */
|
|
|
467 (void) jpeg_read_scanlines (&cinfo, row_buffer, 1);
|
|
|
468 jp = row_buffer[0];
|
|
647
|
469 for (i = 0; i < (int) cinfo.output_width; i++)
|
|
428
|
470 {
|
|
|
471 int clr;
|
|
|
472 if (jpeg_gray)
|
|
|
473 {
|
|
2367
|
474 Binbyte val;
|
|
428
|
475 #if (BITS_IN_JSAMPLE == 8)
|
|
2367
|
476 val = (Binbyte) *jp++;
|
|
428
|
477 #else /* other option is 12 */
|
|
2367
|
478 val = (Binbyte) (*jp++ >> 4);
|
|
428
|
479 #endif
|
|
|
480 for (clr = 0; clr < 3; clr++) /* copy the same value into RGB */
|
|
|
481 *op++ = val;
|
|
|
482 }
|
|
|
483 else
|
|
|
484 {
|
|
|
485 for (clr = 0; clr < 3; clr++)
|
|
|
486 #if (BITS_IN_JSAMPLE == 8)
|
|
2367
|
487 *op++ = (Binbyte)*jp++;
|
|
428
|
488 #else /* other option is 12 */
|
|
2367
|
489 *op++ = (Binbyte)(*jp++ >> 4);
|
|
428
|
490 #endif
|
|
|
491 }
|
|
|
492 }
|
|
|
493 }
|
|
|
494 }
|
|
|
495 }
|
|
|
496
|
|
|
497 /* Step 6.5: Create the pixmap and set up the image instance */
|
|
|
498 /* now instantiate */
|
|
442
|
499 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain),
|
|
428
|
500 init_image_instance_from_eimage,
|
|
|
501 (ii, cinfo.output_width, cinfo.output_height, 1,
|
|
|
502 unwind.eimage, dest_mask,
|
|
|
503 instantiator, domain));
|
|
|
504
|
|
|
505 /* Step 7: Finish decompression */
|
|
|
506
|
|
|
507 jpeg_finish_decompress (&cinfo);
|
|
|
508 /* We can ignore the return value since suspension is not possible
|
|
|
509 * with the stdio data source.
|
|
|
510 */
|
|
|
511
|
|
|
512 /* And we're done! */
|
|
|
513 /* This will clean up everything else. */
|
|
771
|
514 unbind_to (speccount);
|
|
428
|
515 }
|
|
|
516
|
|
|
517 #endif /* HAVE_JPEG */
|
|
|
518
|
|
|
519 #ifdef HAVE_GIF
|
|
|
520 /**********************************************************************
|
|
|
521 * GIF *
|
|
|
522 **********************************************************************/
|
|
|
523
|
|
|
524 #include "gifrlib.h"
|
|
|
525
|
|
|
526 static void
|
|
|
527 gif_validate (Lisp_Object instantiator)
|
|
|
528 {
|
|
|
529 file_or_data_must_be_present (instantiator);
|
|
|
530 }
|
|
|
531
|
|
|
532 static Lisp_Object
|
|
442
|
533 gif_normalize (Lisp_Object inst, Lisp_Object console_type,
|
|
2286
|
534 Lisp_Object UNUSED (dest_mask))
|
|
428
|
535 {
|
|
|
536 return simple_image_type_normalize (inst, console_type, Qgif);
|
|
|
537 }
|
|
|
538
|
|
|
539 static int
|
|
|
540 gif_possible_dest_types (void)
|
|
|
541 {
|
|
|
542 return IMAGE_COLOR_PIXMAP_MASK;
|
|
|
543 }
|
|
|
544
|
|
|
545 /* To survive the otherwise baffling complexity of making sure
|
|
|
546 everything gets cleaned up in the presence of an error, we
|
|
|
547 use an unwind_protect(). */
|
|
|
548
|
|
|
549 struct gif_unwind_data
|
|
|
550 {
|
|
2367
|
551 Binbyte *eimage;
|
|
428
|
552 /* Object that holds the decoded data from a GIF file */
|
|
|
553 GifFileType *giffile;
|
|
|
554 };
|
|
|
555
|
|
|
556 static Lisp_Object
|
|
|
557 gif_instantiate_unwind (Lisp_Object unwind_obj)
|
|
|
558 {
|
|
|
559 struct gif_unwind_data *data =
|
|
|
560 (struct gif_unwind_data *) get_opaque_ptr (unwind_obj);
|
|
|
561
|
|
|
562 free_opaque_ptr (unwind_obj);
|
|
|
563 if (data->giffile)
|
|
|
564 {
|
|
|
565 DGifCloseFile (data->giffile);
|
|
|
566 GifFree(data->giffile);
|
|
|
567 }
|
|
647
|
568 if (data->eimage)
|
|
2367
|
569 xfree (data->eimage, Binbyte *);
|
|
428
|
570
|
|
|
571 return Qnil;
|
|
|
572 }
|
|
|
573
|
|
|
574 typedef struct gif_memory_storage
|
|
|
575 {
|
|
2367
|
576 Binbyte *bytes; /* The data */
|
|
665
|
577 Bytecount len; /* How big is it? */
|
|
|
578 Bytecount index; /* Where are we? */
|
|
428
|
579 } gif_memory_storage;
|
|
|
580
|
|
665
|
581 static Bytecount
|
|
|
582 gif_read_from_memory (GifByteType *buf, Bytecount size, VoidPtr data)
|
|
428
|
583 {
|
|
647
|
584 gif_memory_storage *mem = (gif_memory_storage *) data;
|
|
428
|
585
|
|
|
586 if (size > (mem->len - mem->index))
|
|
647
|
587 return -1;
|
|
|
588 memcpy (buf, mem->bytes + mem->index, size);
|
|
428
|
589 mem->index = mem->index + size;
|
|
|
590 return size;
|
|
|
591 }
|
|
|
592
|
|
|
593 static int
|
|
2286
|
594 gif_memory_close (VoidPtr UNUSED (data))
|
|
428
|
595 {
|
|
|
596 return 0;
|
|
|
597 }
|
|
|
598
|
|
|
599 struct gif_error_struct
|
|
|
600 {
|
|
771
|
601 const Extbyte *err_str; /* return the error string */
|
|
428
|
602 jmp_buf setjmp_buffer; /* for return to caller */
|
|
|
603 };
|
|
|
604
|
|
|
605 static void
|
|
771
|
606 gif_error_func (const Extbyte *err_str, VoidPtr error_ptr)
|
|
428
|
607 {
|
|
647
|
608 struct gif_error_struct *error_data = (struct gif_error_struct *) error_ptr;
|
|
428
|
609
|
|
|
610 /* return to setjmp point */
|
|
|
611 error_data->err_str = err_str;
|
|
|
612 longjmp (error_data->setjmp_buffer, 1);
|
|
|
613 }
|
|
|
614
|
|
|
615 static void
|
|
|
616 gif_instantiate (Lisp_Object image_instance, Lisp_Object instantiator,
|
|
2286
|
617 Lisp_Object UNUSED (pointer_fg),
|
|
|
618 Lisp_Object UNUSED (pointer_bg),
|
|
428
|
619 int dest_mask, Lisp_Object domain)
|
|
|
620 {
|
|
440
|
621 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance);
|
|
428
|
622 /* It is OK for the unwind data to be local to this function,
|
|
|
623 because the unwind-protect is always executed when this
|
|
|
624 stack frame is still valid. */
|
|
|
625 struct gif_unwind_data unwind;
|
|
|
626 int speccount = specpdl_depth ();
|
|
|
627 gif_memory_storage mem_struct;
|
|
|
628 struct gif_error_struct gif_err;
|
|
2367
|
629 Binbyte *bytes;
|
|
665
|
630 Bytecount len;
|
|
428
|
631 int height = 0;
|
|
|
632 int width = 0;
|
|
|
633
|
|
|
634 xzero (unwind);
|
|
|
635 record_unwind_protect (gif_instantiate_unwind, make_opaque_ptr (&unwind));
|
|
|
636
|
|
|
637 /* 1. Now decode the data. */
|
|
|
638
|
|
|
639 {
|
|
|
640 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data);
|
|
|
641
|
|
|
642 assert (!NILP (data));
|
|
|
643
|
|
|
644 if (!(unwind.giffile = GifSetup()))
|
|
440
|
645 signal_image_error ("Insufficient memory to instantiate GIF image", instantiator);
|
|
428
|
646
|
|
|
647 /* set up error facilities */
|
|
|
648 if (setjmp(gif_err.setjmp_buffer))
|
|
|
649 {
|
|
|
650 /* An error was signaled. No clean up is needed, as unwind handles that
|
|
|
651 for us. Just pass the error along. */
|
|
867
|
652 Ibyte *interr;
|
|
428
|
653 Lisp_Object errstring;
|
|
771
|
654 EXTERNAL_TO_C_STRING (gif_err.err_str, interr, Qnative);
|
|
|
655 errstring = build_msg_intstring (interr);
|
|
428
|
656 signal_image_error_2 ("GIF decoding error", errstring, instantiator);
|
|
|
657 }
|
|
|
658 GifSetErrorFunc(unwind.giffile, (Gif_error_func)gif_error_func, (VoidPtr)&gif_err);
|
|
|
659
|
|
440
|
660 TO_EXTERNAL_FORMAT (LISP_STRING, data, ALLOCA, (bytes, len), Qbinary);
|
|
428
|
661 mem_struct.bytes = bytes;
|
|
|
662 mem_struct.len = len;
|
|
|
663 mem_struct.index = 0;
|
|
|
664 GifSetReadFunc(unwind.giffile, gif_read_from_memory, (VoidPtr)&mem_struct);
|
|
|
665 GifSetCloseFunc(unwind.giffile, gif_memory_close, (VoidPtr)&mem_struct);
|
|
|
666 DGifInitRead(unwind.giffile);
|
|
|
667
|
|
|
668 /* Then slurp the image into memory, decoding along the way.
|
|
|
669 The result is the image in a simple one-byte-per-pixel
|
|
|
670 format (#### the GIF routines only support 8-bit GIFs,
|
|
|
671 it appears). */
|
|
|
672 DGifSlurp (unwind.giffile);
|
|
|
673 }
|
|
|
674
|
|
|
675 /* 3. Now create the EImage(s) */
|
|
|
676 {
|
|
|
677 ColorMapObject *cmo = unwind.giffile->SColorMap;
|
|
|
678 int i, j, row, pass, interlace, slice;
|
|
2367
|
679 Binbyte *eip;
|
|
428
|
680 /* interlaced gifs have rows in this order:
|
|
|
681 0, 8, 16, ..., 4, 12, 20, ..., 2, 6, 10, ..., 1, 3, 5, ... */
|
|
|
682 static int InterlacedOffset[] = { 0, 4, 2, 1 };
|
|
|
683 static int InterlacedJumps[] = { 8, 8, 4, 2 };
|
|
|
684
|
|
|
685 height = unwind.giffile->SHeight;
|
|
|
686 width = unwind.giffile->SWidth;
|
|
2367
|
687 unwind.eimage =
|
|
|
688 xnew_binbytes (width * height * 3 * unwind.giffile->ImageCount);
|
|
428
|
689 if (!unwind.eimage)
|
|
|
690 signal_image_error("Unable to allocate enough memory for image", instantiator);
|
|
|
691
|
|
|
692 /* write the data in EImage format (8bit RGB triples) */
|
|
|
693
|
|
|
694 for (slice = 0; slice < unwind.giffile->ImageCount; slice++)
|
|
|
695 {
|
|
638
|
696 /* We check here that the current image covers the full "screen" size. */
|
|
428
|
697 if (unwind.giffile->SavedImages[slice].ImageDesc.Height != height
|
|
|
698 || unwind.giffile->SavedImages[slice].ImageDesc.Width != width
|
|
|
699 || unwind.giffile->SavedImages[slice].ImageDesc.Left != 0
|
|
|
700 || unwind.giffile->SavedImages[slice].ImageDesc.Top != 0)
|
|
|
701 signal_image_error ("Image in GIF file is not full size",
|
|
|
702 instantiator);
|
|
|
703
|
|
|
704 interlace = unwind.giffile->SavedImages[slice].ImageDesc.Interlace;
|
|
|
705 pass = 0;
|
|
|
706 row = interlace ? InterlacedOffset[pass] : 0;
|
|
|
707 eip = unwind.eimage + (width * height * 3 * slice);
|
|
|
708 for (i = 0; i < height; i++)
|
|
|
709 {
|
|
|
710 if (interlace)
|
|
|
711 if (row >= height) {
|
|
|
712 row = InterlacedOffset[++pass];
|
|
|
713 while (row >= height)
|
|
|
714 row = InterlacedOffset[++pass];
|
|
|
715 }
|
|
|
716 eip = unwind.eimage + (width * height * 3 * slice) + (row * width * 3);
|
|
|
717 for (j = 0; j < width; j++)
|
|
|
718 {
|
|
2367
|
719 Binbyte pixel =
|
|
428
|
720 unwind.giffile->SavedImages[slice].RasterBits[(i * width) + j];
|
|
|
721 *eip++ = cmo->Colors[pixel].Red;
|
|
|
722 *eip++ = cmo->Colors[pixel].Green;
|
|
|
723 *eip++ = cmo->Colors[pixel].Blue;
|
|
|
724 }
|
|
|
725 row += interlace ? InterlacedJumps[pass] : 1;
|
|
|
726 }
|
|
|
727 }
|
|
|
728
|
|
|
729 /* now instantiate */
|
|
442
|
730 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain),
|
|
428
|
731 init_image_instance_from_eimage,
|
|
|
732 (ii, width, height, unwind.giffile->ImageCount, unwind.eimage, dest_mask,
|
|
|
733 instantiator, domain));
|
|
|
734 }
|
|
|
735
|
|
|
736 /* We read the gif successfully. If we have more than one slice then
|
|
|
737 animate the gif. */
|
|
|
738 if (unwind.giffile->ImageCount > 1)
|
|
|
739 {
|
|
|
740 /* See if there is a timeout value. In theory there could be one
|
|
|
741 for every image - but that makes the implementation way to
|
|
|
742 complicated for now so we just take the first. */
|
|
|
743 unsigned short timeout = 0;
|
|
|
744 Lisp_Object tid;
|
|
|
745
|
|
|
746 if (unwind.giffile->SavedImages[0].Function == GRAPHICS_EXT_FUNC_CODE
|
|
|
747 &&
|
|
|
748 unwind.giffile->SavedImages[0].ExtensionBlockCount)
|
|
|
749 {
|
|
|
750 timeout = (unsigned short)
|
|
438
|
751 ((unwind.giffile->SavedImages[0].ExtensionBlocks[0].Bytes[2] << 8) +
|
|
428
|
752 unwind.giffile-> SavedImages[0].ExtensionBlocks[0].Bytes[1]) * 10;
|
|
|
753 }
|
|
|
754
|
|
|
755 /* Too short a timeout will crucify us performance-wise. */
|
|
|
756 tid = add_glyph_animated_timeout (timeout > 10 ? timeout : 10, image_instance);
|
|
|
757
|
|
|
758 if (!NILP (tid))
|
|
|
759 IMAGE_INSTANCE_PIXMAP_TIMEOUT (ii) = XINT (tid);
|
|
|
760 }
|
|
438
|
761
|
|
771
|
762 unbind_to (speccount);
|
|
428
|
763 }
|
|
|
764
|
|
|
765 #endif /* HAVE_GIF */
|
|
|
766
|
|
|
767
|
|
|
768 #ifdef HAVE_PNG
|
|
|
769
|
|
|
770 /**********************************************************************
|
|
|
771 * PNG *
|
|
|
772 **********************************************************************/
|
|
|
773 static void
|
|
|
774 png_validate (Lisp_Object instantiator)
|
|
|
775 {
|
|
|
776 file_or_data_must_be_present (instantiator);
|
|
|
777 }
|
|
|
778
|
|
|
779 static Lisp_Object
|
|
442
|
780 png_normalize (Lisp_Object inst, Lisp_Object console_type,
|
|
2286
|
781 Lisp_Object UNUSED (dest_mask))
|
|
428
|
782 {
|
|
|
783 return simple_image_type_normalize (inst, console_type, Qpng);
|
|
|
784 }
|
|
|
785
|
|
|
786 static int
|
|
|
787 png_possible_dest_types (void)
|
|
|
788 {
|
|
|
789 return IMAGE_COLOR_PIXMAP_MASK;
|
|
|
790 }
|
|
|
791
|
|
|
792 struct png_memory_storage
|
|
|
793 {
|
|
2367
|
794 const Binbyte *bytes; /* The data */
|
|
665
|
795 Bytecount len; /* How big is it? */
|
|
|
796 Bytecount index; /* Where are we? */
|
|
428
|
797 };
|
|
|
798
|
|
|
799 static void
|
|
647
|
800 png_read_from_memory (png_structp png_ptr, png_bytep data,
|
|
|
801 png_size_t length)
|
|
428
|
802 {
|
|
|
803 struct png_memory_storage *tbr =
|
|
|
804 (struct png_memory_storage *) png_get_io_ptr (png_ptr);
|
|
|
805
|
|
665
|
806 if ((Bytecount) length > (tbr->len - tbr->index))
|
|
428
|
807 png_error (png_ptr, (png_const_charp) "Read Error");
|
|
647
|
808 memcpy (data, tbr->bytes + tbr->index,length);
|
|
428
|
809 tbr->index = tbr->index + length;
|
|
|
810 }
|
|
|
811
|
|
|
812 struct png_error_struct
|
|
|
813 {
|
|
442
|
814 const char *err_str;
|
|
428
|
815 jmp_buf setjmp_buffer; /* for return to caller */
|
|
|
816 };
|
|
|
817
|
|
|
818 /* jh 98/03/12 - #### AARRRGH! libpng includes jmp_buf inside its own
|
|
|
819 structure, and there are cases where the size can be different from
|
|
|
820 between inside the library, and inside the code! To do an end run
|
|
|
821 around this, use our own error functions, and don't rely on things
|
|
|
822 passed in the png_ptr to them. This is an ugly hack and must
|
|
|
823 go away when the lisp engine is threaded! */
|
|
|
824 static struct png_error_struct png_err_stct;
|
|
|
825
|
|
|
826 static void
|
|
2286
|
827 png_error_func (png_structp UNUSED (png_ptr), png_const_charp msg)
|
|
428
|
828 {
|
|
|
829 png_err_stct.err_str = msg;
|
|
|
830 longjmp (png_err_stct.setjmp_buffer, 1);
|
|
|
831 }
|
|
|
832
|
|
|
833 static void
|
|
2286
|
834 png_warning_func (png_structp UNUSED (png_ptr), png_const_charp msg)
|
|
428
|
835 {
|
|
|
836 warn_when_safe (Qpng, Qinfo, "%s", msg);
|
|
|
837 }
|
|
|
838
|
|
|
839 struct png_unwind_data
|
|
|
840 {
|
|
|
841 FILE *instream;
|
|
2367
|
842 Binbyte *eimage;
|
|
428
|
843 png_structp png_ptr;
|
|
|
844 png_infop info_ptr;
|
|
|
845 };
|
|
|
846
|
|
|
847 static Lisp_Object
|
|
|
848 png_instantiate_unwind (Lisp_Object unwind_obj)
|
|
|
849 {
|
|
|
850 struct png_unwind_data *data =
|
|
|
851 (struct png_unwind_data *) get_opaque_ptr (unwind_obj);
|
|
|
852
|
|
|
853 free_opaque_ptr (unwind_obj);
|
|
|
854 if (data->png_ptr)
|
|
|
855 png_destroy_read_struct (&(data->png_ptr), &(data->info_ptr), (png_infopp)NULL);
|
|
|
856 if (data->instream)
|
|
771
|
857 retry_fclose (data->instream);
|
|
428
|
858
|
|
1726
|
859 if (data->eimage)
|
|
2367
|
860 xfree(data->eimage, Binbyte *);
|
|
428
|
861
|
|
|
862 return Qnil;
|
|
|
863 }
|
|
|
864
|
|
|
865 static void
|
|
|
866 png_instantiate (Lisp_Object image_instance, Lisp_Object instantiator,
|
|
2286
|
867 Lisp_Object UNUSED (pointer_fg),
|
|
|
868 Lisp_Object UNUSED (pointer_bg),
|
|
428
|
869 int dest_mask, Lisp_Object domain)
|
|
|
870 {
|
|
440
|
871 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance);
|
|
428
|
872 struct png_unwind_data unwind;
|
|
|
873 int speccount = specpdl_depth ();
|
|
|
874 int height, width;
|
|
|
875 struct png_memory_storage tbr; /* Data to be read */
|
|
|
876
|
|
|
877 /* PNG variables */
|
|
|
878 png_structp png_ptr;
|
|
|
879 png_infop info_ptr;
|
|
|
880
|
|
|
881 /* Initialize all PNG structures */
|
|
|
882 png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, (void*)&png_err_stct,
|
|
|
883 png_error_func, png_warning_func);
|
|
|
884 if (!png_ptr)
|
|
|
885 signal_image_error ("Error obtaining memory for png_read", instantiator);
|
|
|
886 info_ptr = png_create_info_struct (png_ptr);
|
|
|
887 if (!info_ptr)
|
|
|
888 {
|
|
|
889 png_destroy_read_struct (&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
|
|
|
890 signal_image_error ("Error obtaining memory for png_read", instantiator);
|
|
|
891 }
|
|
|
892
|
|
|
893 xzero (unwind);
|
|
|
894 unwind.png_ptr = png_ptr;
|
|
|
895 unwind.info_ptr = info_ptr;
|
|
|
896
|
|
|
897 record_unwind_protect (png_instantiate_unwind, make_opaque_ptr (&unwind));
|
|
|
898
|
|
|
899 /* This code is a mixture of stuff from Ben's GIF/JPEG stuff from
|
|
|
900 this file, example.c from the libpng 0.81 distribution, and the
|
|
|
901 pngtopnm sources. -WMP-
|
|
|
902 */
|
|
|
903 /* It has been further modified to handle the API changes for 0.96,
|
|
|
904 and is no longer usable for previous versions. jh
|
|
|
905 */
|
|
|
906
|
|
|
907 /* Set the jmp_buf return context for png_error ... if this returns !0, then
|
|
|
908 we ran into a problem somewhere, and need to clean up after ourselves. */
|
|
|
909 if (setjmp (png_err_stct.setjmp_buffer))
|
|
|
910 {
|
|
|
911 /* Something blew up: just display the error (cleanup happens in the unwind) */
|
|
|
912 signal_image_error_2 ("Error decoding PNG",
|
|
|
913 build_string(png_err_stct.err_str),
|
|
|
914 instantiator);
|
|
|
915 }
|
|
|
916
|
|
|
917 /* Initialize the IO layer and read in header information */
|
|
|
918 {
|
|
|
919 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data);
|
|
2367
|
920 const Binbyte *bytes;
|
|
665
|
921 Bytecount len;
|
|
428
|
922
|
|
|
923 assert (!NILP (data));
|
|
|
924
|
|
|
925 /* #### This is a definite problem under Mule due to the amount of
|
|
|
926 stack data it might allocate. Need to think about using Lstreams */
|
|
440
|
927 TO_EXTERNAL_FORMAT (LISP_STRING, data, ALLOCA, (bytes, len), Qbinary);
|
|
428
|
928 tbr.bytes = bytes;
|
|
|
929 tbr.len = len;
|
|
|
930 tbr.index = 0;
|
|
|
931 png_set_read_fn (png_ptr,(void *) &tbr, png_read_from_memory);
|
|
|
932 }
|
|
|
933
|
|
|
934 png_read_info (png_ptr, info_ptr);
|
|
|
935
|
|
|
936 {
|
|
|
937 int y;
|
|
2367
|
938 Binbyte **row_pointers;
|
|
428
|
939 height = info_ptr->height;
|
|
|
940 width = info_ptr->width;
|
|
|
941
|
|
|
942 /* Wow, allocate all the memory. Truly, exciting. */
|
|
2367
|
943 unwind.eimage = xnew_array_and_zero (Binbyte, width * height * 3);
|
|
428
|
944 /* libpng expects that the image buffer passed in contains a
|
|
|
945 picture to draw on top of if the png has any transparencies.
|
|
|
946 This could be a good place to pass that in... */
|
|
|
947
|
|
|
948 row_pointers = xnew_array (png_byte *, height);
|
|
|
949
|
|
|
950 for (y = 0; y < height; y++)
|
|
|
951 row_pointers[y] = unwind.eimage + (width * 3 * y);
|
|
|
952
|
|
|
953 {
|
|
|
954 /* if the png specifies a background chunk, go ahead and
|
|
|
955 use it, else use what we can get from the default face. */
|
|
|
956 png_color_16 my_background, *image_background;
|
|
|
957 Lisp_Object bkgd = Qnil;
|
|
|
958
|
|
|
959 my_background.red = 0x7fff;
|
|
|
960 my_background.green = 0x7fff;
|
|
|
961 my_background.blue = 0x7fff;
|
|
|
962 bkgd = FACE_BACKGROUND (Vdefault_face, domain);
|
|
|
963 if (!COLOR_INSTANCEP (bkgd))
|
|
|
964 {
|
|
|
965 warn_when_safe (Qpng, Qinfo, "Couldn't get background color!");
|
|
|
966 }
|
|
|
967 else
|
|
|
968 {
|
|
440
|
969 Lisp_Color_Instance *c;
|
|
428
|
970 Lisp_Object rgblist;
|
|
|
971
|
|
|
972 c = XCOLOR_INSTANCE (bkgd);
|
|
|
973 rgblist = MAYBE_LISP_DEVMETH (XDEVICE (c->device),
|
|
|
974 color_instance_rgb_components,
|
|
|
975 (c));
|
|
442
|
976 my_background.red = (unsigned short) XINT (XCAR (rgblist));
|
|
|
977 my_background.green = (unsigned short) XINT (XCAR (XCDR (rgblist)));
|
|
|
978 my_background.blue = (unsigned short) XINT (XCAR (XCDR (XCDR (rgblist))));
|
|
428
|
979 }
|
|
|
980
|
|
|
981 if (png_get_bKGD (png_ptr, info_ptr, &image_background))
|
|
|
982 png_set_background (png_ptr, image_background,
|
|
|
983 PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
|
|
|
984 else
|
|
|
985 png_set_background (png_ptr, &my_background,
|
|
|
986 PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
|
|
|
987 }
|
|
|
988
|
|
|
989 /* Now that we're using EImage, ask for 8bit RGB triples for any type
|
|
|
990 of image*/
|
|
|
991 /* convert palette images to full RGB */
|
|
|
992 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
|
|
|
993 png_set_expand (png_ptr);
|
|
|
994 /* send grayscale images to RGB too */
|
|
|
995 if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY ||
|
|
|
996 info_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
|
|
|
997 png_set_gray_to_rgb (png_ptr);
|
|
|
998 /* we can't handle alpha values */
|
|
|
999 if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
|
|
|
1000 png_set_strip_alpha (png_ptr);
|
|
|
1001 /* tell libpng to strip 16 bit depth files down to 8 bits */
|
|
|
1002 if (info_ptr->bit_depth == 16)
|
|
|
1003 png_set_strip_16 (png_ptr);
|
|
|
1004 /* if the image is < 8 bits, pad it out */
|
|
|
1005 if (info_ptr->bit_depth < 8)
|
|
|
1006 {
|
|
|
1007 if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY)
|
|
|
1008 png_set_expand (png_ptr);
|
|
|
1009 else
|
|
|
1010 png_set_packing (png_ptr);
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 png_read_image (png_ptr, row_pointers);
|
|
|
1014 png_read_end (png_ptr, info_ptr);
|
|
|
1015
|
|
793
|
1016 #if 1 /* def PNG_SHOW_COMMENTS */
|
|
428
|
1017 /* ####
|
|
|
1018 * I turn this off by default now, because the !%^@#!% comments
|
|
|
1019 * show up every time the image is instantiated, which can get
|
|
|
1020 * really really annoying. There should be some way to pass this
|
|
|
1021 * type of data down into the glyph code, where you can get to it
|
|
|
1022 * from lisp anyway. - WMP
|
|
|
1023 */
|
|
793
|
1024 /* #### I've turned this on, since these warnings are now
|
|
|
1025 unobtrusive. */
|
|
428
|
1026 {
|
|
|
1027 int i;
|
|
|
1028
|
|
|
1029 for (i = 0 ; i < info_ptr->num_text ; i++)
|
|
|
1030 {
|
|
|
1031 /* How paranoid do I have to be about no trailing NULLs, and
|
|
|
1032 using (int)info_ptr->text[i].text_length, and strncpy and a temp
|
|
|
1033 string somewhere? */
|
|
|
1034
|
|
|
1035 warn_when_safe (Qpng, Qinfo, "%s - %s",
|
|
|
1036 info_ptr->text[i].key,
|
|
|
1037 info_ptr->text[i].text);
|
|
|
1038 }
|
|
|
1039 }
|
|
|
1040 #endif
|
|
|
1041
|
|
2367
|
1042 xfree (row_pointers, Binbyte **);
|
|
428
|
1043 }
|
|
|
1044
|
|
|
1045 /* now instantiate */
|
|
442
|
1046 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain),
|
|
428
|
1047 init_image_instance_from_eimage,
|
|
|
1048 (ii, width, height, 1, unwind.eimage, dest_mask,
|
|
|
1049 instantiator, domain));
|
|
|
1050
|
|
|
1051 /* This will clean up everything else. */
|
|
771
|
1052 unbind_to (speccount);
|
|
428
|
1053 }
|
|
|
1054
|
|
|
1055 #endif /* HAVE_PNG */
|
|
|
1056
|
|
|
1057
|
|
|
1058 #ifdef HAVE_TIFF
|
|
|
1059 #include "tiffio.h"
|
|
|
1060
|
|
|
1061 /**********************************************************************
|
|
|
1062 * TIFF *
|
|
|
1063 **********************************************************************/
|
|
|
1064 static void
|
|
|
1065 tiff_validate (Lisp_Object instantiator)
|
|
|
1066 {
|
|
|
1067 file_or_data_must_be_present (instantiator);
|
|
|
1068 }
|
|
|
1069
|
|
|
1070 static Lisp_Object
|
|
442
|
1071 tiff_normalize (Lisp_Object inst, Lisp_Object console_type,
|
|
2286
|
1072 Lisp_Object UNUSED (dest_mask))
|
|
428
|
1073 {
|
|
|
1074 return simple_image_type_normalize (inst, console_type, Qtiff);
|
|
|
1075 }
|
|
|
1076
|
|
|
1077 static int
|
|
|
1078 tiff_possible_dest_types (void)
|
|
|
1079 {
|
|
|
1080 return IMAGE_COLOR_PIXMAP_MASK;
|
|
|
1081 }
|
|
|
1082
|
|
|
1083 struct tiff_unwind_data
|
|
|
1084 {
|
|
2367
|
1085 Binbyte *eimage;
|
|
428
|
1086 /* Object that holds the decoded data from a TIFF file */
|
|
|
1087 TIFF *tiff;
|
|
|
1088 };
|
|
|
1089
|
|
|
1090 static Lisp_Object
|
|
|
1091 tiff_instantiate_unwind (Lisp_Object unwind_obj)
|
|
|
1092 {
|
|
|
1093 struct tiff_unwind_data *data =
|
|
|
1094 (struct tiff_unwind_data *) get_opaque_ptr (unwind_obj);
|
|
|
1095
|
|
|
1096 free_opaque_ptr (unwind_obj);
|
|
|
1097 if (data->tiff)
|
|
|
1098 {
|
|
|
1099 TIFFClose(data->tiff);
|
|
|
1100 }
|
|
|
1101 if (data->eimage)
|
|
2367
|
1102 xfree (data->eimage, Binbyte *);
|
|
428
|
1103
|
|
|
1104 return Qnil;
|
|
|
1105 }
|
|
|
1106
|
|
|
1107 typedef struct tiff_memory_storage
|
|
|
1108 {
|
|
2367
|
1109 Binbyte *bytes; /* The data */
|
|
665
|
1110 Bytecount len; /* How big is it? */
|
|
|
1111 Bytecount index; /* Where are we? */
|
|
428
|
1112 } tiff_memory_storage;
|
|
|
1113
|
|
|
1114 static size_t
|
|
647
|
1115 tiff_memory_read (thandle_t data, tdata_t buf, tsize_t size)
|
|
428
|
1116 {
|
|
647
|
1117 tiff_memory_storage *mem = (tiff_memory_storage *) data;
|
|
428
|
1118
|
|
665
|
1119 if ((Bytecount) size > (mem->len - mem->index))
|
|
428
|
1120 return (size_t) -1;
|
|
647
|
1121 memcpy (buf, mem->bytes + mem->index, size);
|
|
428
|
1122 mem->index = mem->index + size;
|
|
|
1123 return size;
|
|
|
1124 }
|
|
|
1125
|
|
647
|
1126 static size_t
|
|
2286
|
1127 tiff_memory_write (thandle_t UNUSED (data), tdata_t UNUSED (buf),
|
|
|
1128 tsize_t UNUSED (size))
|
|
428
|
1129 {
|
|
2500
|
1130 ABORT();
|
|
2270
|
1131 return 0;
|
|
428
|
1132 }
|
|
|
1133
|
|
647
|
1134 static toff_t
|
|
|
1135 tiff_memory_seek (thandle_t data, toff_t off, int whence)
|
|
428
|
1136 {
|
|
647
|
1137 tiff_memory_storage *mem = (tiff_memory_storage *) data;
|
|
428
|
1138 int newidx;
|
|
647
|
1139 switch(whence)
|
|
|
1140 {
|
|
|
1141 case SEEK_SET:
|
|
|
1142 newidx = off;
|
|
|
1143 break;
|
|
|
1144 case SEEK_END:
|
|
|
1145 newidx = mem->len + off;
|
|
|
1146 break;
|
|
|
1147 case SEEK_CUR:
|
|
|
1148 newidx = mem->index + off;
|
|
|
1149 break;
|
|
|
1150 default:
|
|
|
1151 fprintf (stderr, "Eh? invalid seek mode in tiff_memory_seek\n");
|
|
|
1152 return (toff_t) -1;
|
|
|
1153 }
|
|
428
|
1154
|
|
|
1155 if ((newidx > mem->len) || (newidx < 0))
|
|
593
|
1156 return (toff_t) -1;
|
|
428
|
1157
|
|
|
1158 mem->index = newidx;
|
|
|
1159 return newidx;
|
|
|
1160 }
|
|
|
1161
|
|
|
1162 static int
|
|
2286
|
1163 tiff_memory_close (thandle_t UNUSED (data))
|
|
428
|
1164 {
|
|
|
1165 return 0;
|
|
|
1166 }
|
|
|
1167
|
|
|
1168 static int
|
|
2286
|
1169 tiff_map_noop (thandle_t UNUSED (data), tdata_t* UNUSED (pbase),
|
|
|
1170 toff_t* UNUSED (psize))
|
|
428
|
1171 {
|
|
|
1172 return 0;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 static void
|
|
2286
|
1176 tiff_unmap_noop (thandle_t UNUSED (data), tdata_t UNUSED (pbase),
|
|
|
1177 toff_t UNUSED (psize))
|
|
428
|
1178 {
|
|
|
1179 return;
|
|
|
1180 }
|
|
|
1181
|
|
|
1182 static toff_t
|
|
647
|
1183 tiff_memory_size (thandle_t data)
|
|
428
|
1184 {
|
|
|
1185 tiff_memory_storage *mem = (tiff_memory_storage*)data;
|
|
|
1186 return mem->len;
|
|
|
1187 }
|
|
|
1188
|
|
|
1189 struct tiff_error_struct
|
|
|
1190 {
|
|
438
|
1191 #ifdef HAVE_VSNPRINTF
|
|
428
|
1192 char err_str[256];
|
|
|
1193 #else
|
|
|
1194 char err_str[1024]; /* return the error string */
|
|
|
1195 #endif
|
|
|
1196 jmp_buf setjmp_buffer; /* for return to caller */
|
|
|
1197 };
|
|
|
1198
|
|
|
1199 /* jh 98/03/12 - ###This struct for passing data to the error functions
|
|
|
1200 is an ugly hack caused by the fact that libtiff (as of v3.4) doesn't
|
|
|
1201 have any place to store error func data. This should be rectified
|
|
|
1202 before XEmacs gets threads! */
|
|
|
1203 static struct tiff_error_struct tiff_err_data;
|
|
|
1204
|
|
|
1205 static void
|
|
2286
|
1206 tiff_error_func (const char *UNUSED (module), const char *fmt, ...)
|
|
428
|
1207 {
|
|
|
1208 va_list vargs;
|
|
|
1209
|
|
|
1210 va_start (vargs, fmt);
|
|
438
|
1211 #ifdef HAVE_VSNPRINTF
|
|
428
|
1212 vsnprintf (tiff_err_data.err_str, 255, fmt, vargs);
|
|
|
1213 #else
|
|
|
1214 /* pray this doesn't overflow... */
|
|
|
1215 vsprintf (tiff_err_data.err_str, fmt, vargs);
|
|
|
1216 #endif
|
|
|
1217 va_end (vargs);
|
|
|
1218 /* return to setjmp point */
|
|
|
1219 longjmp (tiff_err_data.setjmp_buffer, 1);
|
|
|
1220 }
|
|
|
1221
|
|
|
1222 static void
|
|
647
|
1223 tiff_warning_func (const char *module, const char *fmt, ...)
|
|
428
|
1224 {
|
|
|
1225 va_list vargs;
|
|
438
|
1226 #ifdef HAVE_VSNPRINTF
|
|
428
|
1227 char warn_str[256];
|
|
|
1228 #else
|
|
|
1229 char warn_str[1024];
|
|
|
1230 #endif
|
|
|
1231
|
|
|
1232 va_start (vargs, fmt);
|
|
438
|
1233 #ifdef HAVE_VSNPRINTF
|
|
428
|
1234 vsnprintf (warn_str, 255, fmt, vargs);
|
|
|
1235 #else
|
|
|
1236 vsprintf (warn_str, fmt, vargs);
|
|
|
1237 #endif
|
|
|
1238 va_end (vargs);
|
|
|
1239 warn_when_safe (Qtiff, Qinfo, "%s - %s",
|
|
|
1240 module, warn_str);
|
|
|
1241 }
|
|
|
1242
|
|
|
1243 static void
|
|
|
1244 tiff_instantiate (Lisp_Object image_instance, Lisp_Object instantiator,
|
|
2286
|
1245 Lisp_Object UNUSED (pointer_fg),
|
|
|
1246 Lisp_Object UNUSED (pointer_bg),
|
|
428
|
1247 int dest_mask, Lisp_Object domain)
|
|
|
1248 {
|
|
440
|
1249 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance);
|
|
428
|
1250 tiff_memory_storage mem_struct;
|
|
|
1251 /* It is OK for the unwind data to be local to this function,
|
|
|
1252 because the unwind-protect is always executed when this
|
|
|
1253 stack frame is still valid. */
|
|
|
1254 struct tiff_unwind_data unwind;
|
|
|
1255 int speccount = specpdl_depth ();
|
|
|
1256 uint32 width, height;
|
|
|
1257
|
|
|
1258 xzero (unwind);
|
|
|
1259 record_unwind_protect (tiff_instantiate_unwind, make_opaque_ptr (&unwind));
|
|
|
1260
|
|
|
1261 /* set up error facilities */
|
|
|
1262 if (setjmp (tiff_err_data.setjmp_buffer))
|
|
|
1263 {
|
|
|
1264 /* An error was signaled. No clean up is needed, as unwind handles that
|
|
|
1265 for us. Just pass the error along. */
|
|
|
1266 signal_image_error_2 ("TIFF decoding error",
|
|
|
1267 build_string(tiff_err_data.err_str),
|
|
|
1268 instantiator);
|
|
|
1269 }
|
|
|
1270 TIFFSetErrorHandler ((TIFFErrorHandler)tiff_error_func);
|
|
|
1271 TIFFSetWarningHandler ((TIFFErrorHandler)tiff_warning_func);
|
|
|
1272 {
|
|
|
1273 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data);
|
|
2367
|
1274 Binbyte *bytes;
|
|
665
|
1275 Bytecount len;
|
|
428
|
1276
|
|
|
1277 uint32 *raster;
|
|
2367
|
1278 Binbyte *ep;
|
|
428
|
1279
|
|
|
1280 assert (!NILP (data));
|
|
|
1281
|
|
|
1282 /* #### This is a definite problem under Mule due to the amount of
|
|
|
1283 stack data it might allocate. Think about Lstreams... */
|
|
440
|
1284 TO_EXTERNAL_FORMAT (LISP_STRING, data,
|
|
|
1285 ALLOCA, (bytes, len),
|
|
|
1286 Qbinary);
|
|
428
|
1287 mem_struct.bytes = bytes;
|
|
|
1288 mem_struct.len = len;
|
|
|
1289 mem_struct.index = 0;
|
|
|
1290
|
|
442
|
1291 unwind.tiff = TIFFClientOpen ("memfile", "r", (thandle_t) &mem_struct,
|
|
428
|
1292 (TIFFReadWriteProc)tiff_memory_read,
|
|
|
1293 (TIFFReadWriteProc)tiff_memory_write,
|
|
|
1294 tiff_memory_seek, tiff_memory_close, tiff_memory_size,
|
|
|
1295 tiff_map_noop, tiff_unmap_noop);
|
|
|
1296 if (!unwind.tiff)
|
|
440
|
1297 signal_image_error ("Insufficient memory to instantiate TIFF image", instantiator);
|
|
428
|
1298
|
|
|
1299 TIFFGetField (unwind.tiff, TIFFTAG_IMAGEWIDTH, &width);
|
|
|
1300 TIFFGetField (unwind.tiff, TIFFTAG_IMAGELENGTH, &height);
|
|
2367
|
1301 unwind.eimage = xnew_binbytes (width * height * 3);
|
|
428
|
1302
|
|
440
|
1303 /* #### This is little more than proof-of-concept/function testing.
|
|
428
|
1304 It needs to be reimplemented via scanline reads for both memory
|
|
|
1305 compactness. */
|
|
|
1306 raster = (uint32*) _TIFFmalloc (width * height * sizeof (uint32));
|
|
|
1307 if (raster != NULL)
|
|
|
1308 {
|
|
647
|
1309 int i, j;
|
|
428
|
1310 uint32 *rp;
|
|
|
1311 ep = unwind.eimage;
|
|
|
1312 rp = raster;
|
|
|
1313 if (TIFFReadRGBAImage (unwind.tiff, width, height, raster, 0))
|
|
|
1314 {
|
|
|
1315 for (i = height - 1; i >= 0; i--)
|
|
|
1316 {
|
|
|
1317 /* This is to get around weirdness in the libtiff library where properly
|
|
|
1318 made TIFFs will come out upside down. libtiff bug or jhod-brainlock? */
|
|
|
1319 rp = raster + (i * width);
|
|
647
|
1320 for (j = 0; j < (int) width; j++)
|
|
428
|
1321 {
|
|
2367
|
1322 *ep++ = (Binbyte)TIFFGetR(*rp);
|
|
|
1323 *ep++ = (Binbyte)TIFFGetG(*rp);
|
|
|
1324 *ep++ = (Binbyte)TIFFGetB(*rp);
|
|
428
|
1325 rp++;
|
|
|
1326 }
|
|
|
1327 }
|
|
|
1328 }
|
|
|
1329 _TIFFfree (raster);
|
|
|
1330 } else
|
|
|
1331 signal_image_error ("Unable to allocate memory for TIFFReadRGBA", instantiator);
|
|
|
1332
|
|
|
1333 }
|
|
|
1334
|
|
|
1335 /* now instantiate */
|
|
442
|
1336 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain),
|
|
428
|
1337 init_image_instance_from_eimage,
|
|
|
1338 (ii, width, height, 1, unwind.eimage, dest_mask,
|
|
|
1339 instantiator, domain));
|
|
|
1340
|
|
771
|
1341 unbind_to (speccount);
|
|
428
|
1342 }
|
|
|
1343
|
|
|
1344 #endif /* HAVE_TIFF */
|
|
|
1345
|
|
|
1346
|
|
|
1347 /************************************************************************/
|
|
|
1348 /* initialization */
|
|
|
1349 /************************************************************************/
|
|
|
1350
|
|
|
1351 void
|
|
|
1352 syms_of_glyphs_eimage (void)
|
|
|
1353 {
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 void
|
|
|
1357 image_instantiator_format_create_glyphs_eimage (void)
|
|
|
1358 {
|
|
|
1359 /* image-instantiator types */
|
|
|
1360 #ifdef HAVE_JPEG
|
|
|
1361 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (jpeg, "jpeg");
|
|
|
1362
|
|
|
1363 IIFORMAT_HAS_METHOD (jpeg, validate);
|
|
|
1364 IIFORMAT_HAS_METHOD (jpeg, normalize);
|
|
|
1365 IIFORMAT_HAS_METHOD (jpeg, possible_dest_types);
|
|
|
1366 IIFORMAT_HAS_METHOD (jpeg, instantiate);
|
|
|
1367
|
|
|
1368 IIFORMAT_VALID_KEYWORD (jpeg, Q_data, check_valid_string);
|
|
|
1369 IIFORMAT_VALID_KEYWORD (jpeg, Q_file, check_valid_string);
|
|
|
1370 #endif
|
|
|
1371
|
|
|
1372 #ifdef HAVE_GIF
|
|
|
1373 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (gif, "gif");
|
|
|
1374
|
|
|
1375 IIFORMAT_HAS_METHOD (gif, validate);
|
|
|
1376 IIFORMAT_HAS_METHOD (gif, normalize);
|
|
|
1377 IIFORMAT_HAS_METHOD (gif, possible_dest_types);
|
|
|
1378 IIFORMAT_HAS_METHOD (gif, instantiate);
|
|
|
1379
|
|
|
1380 IIFORMAT_VALID_KEYWORD (gif, Q_data, check_valid_string);
|
|
|
1381 IIFORMAT_VALID_KEYWORD (gif, Q_file, check_valid_string);
|
|
|
1382 #endif
|
|
|
1383
|
|
|
1384 #ifdef HAVE_PNG
|
|
|
1385 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (png, "png");
|
|
|
1386
|
|
|
1387 IIFORMAT_HAS_METHOD (png, validate);
|
|
|
1388 IIFORMAT_HAS_METHOD (png, normalize);
|
|
|
1389 IIFORMAT_HAS_METHOD (png, possible_dest_types);
|
|
|
1390 IIFORMAT_HAS_METHOD (png, instantiate);
|
|
|
1391
|
|
|
1392 IIFORMAT_VALID_KEYWORD (png, Q_data, check_valid_string);
|
|
|
1393 IIFORMAT_VALID_KEYWORD (png, Q_file, check_valid_string);
|
|
|
1394 #endif
|
|
|
1395
|
|
|
1396 #ifdef HAVE_TIFF
|
|
|
1397 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (tiff, "tiff");
|
|
|
1398
|
|
|
1399 IIFORMAT_HAS_METHOD (tiff, validate);
|
|
|
1400 IIFORMAT_HAS_METHOD (tiff, normalize);
|
|
|
1401 IIFORMAT_HAS_METHOD (tiff, possible_dest_types);
|
|
|
1402 IIFORMAT_HAS_METHOD (tiff, instantiate);
|
|
|
1403
|
|
|
1404 IIFORMAT_VALID_KEYWORD (tiff, Q_data, check_valid_string);
|
|
|
1405 IIFORMAT_VALID_KEYWORD (tiff, Q_file, check_valid_string);
|
|
|
1406 #endif
|
|
|
1407
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 void
|
|
|
1411 vars_of_glyphs_eimage (void)
|
|
|
1412 {
|
|
|
1413 #ifdef HAVE_JPEG
|
|
|
1414 Fprovide (Qjpeg);
|
|
|
1415 #endif
|
|
|
1416
|
|
|
1417 #ifdef HAVE_GIF
|
|
|
1418 Fprovide (Qgif);
|
|
|
1419 #endif
|
|
|
1420
|
|
|
1421 #ifdef HAVE_PNG
|
|
|
1422 Fprovide (Qpng);
|
|
|
1423 #endif
|
|
|
1424
|
|
|
1425 #ifdef HAVE_TIFF
|
|
|
1426 Fprovide (Qtiff);
|
|
|
1427 #endif
|
|
|
1428
|
|
|
1429 }
|
