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