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