Mercurial > hg > xemacs-beta
annotate src/glyphs-eimage.c @ 5024:7e57c0575a15
merge
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Tue, 09 Feb 2010 19:34:19 -0600 |
| parents | 2ade80e8c640 2eec7322eb7f |
| children | 6c6d78781d59 8b2f75cecb89 |
| rev | line source |
|---|---|
| 428 | 1 /* EImage-specific Lisp objects. |
| 2 Copyright (C) 1993, 1994, 1998 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Board of Trustees, University of Illinois. | |
| 4 Copyright (C) 1995 Tinker Systems | |
| 2959 | 5 Copyright (C) 1995, 1996, 2001, 2002, 2004, 2005 Ben Wing |
| 428 | 6 Copyright (C) 1995 Sun Microsystems |
| 7 | |
| 8 This file is part of XEmacs. | |
| 9 | |
| 10 XEmacs is free software; you can redistribute it and/or modify it | |
| 11 under the terms of the GNU General Public License as published by the | |
| 12 Free Software Foundation; either version 2, or (at your option) any | |
| 13 later version. | |
| 14 | |
| 15 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
| 21 along with XEmacs; see the file COPYING. If not, write to | |
| 22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 Boston, MA 02111-1307, USA. */ | |
| 24 | |
| 25 /* Synched up with: Not in FSF. */ | |
| 26 | |
| 2959 | 27 /* Originally part of glyphs.c. |
| 28 | |
| 428 | 29 GIF/JPEG support added by Ben Wing for 19.14 |
| 30 PNG support added by Bill Perry for 19.14 | |
| 31 Improved GIF/JPEG support added by Bill Perry for 19.14 | |
| 32 Cleanup/simplification of error handling by Ben Wing for 19.14 | |
| 33 GIF support changed to external Gifreader lib by Jareth Hein for 21.0 | |
| 34 Many changes for color work and optimizations by Jareth Hein for 21.0 | |
| 35 Switch of GIF/JPEG/PNG to new EImage intermediate code by Jareth Hein for 21.0 | |
| 36 TIFF code by Jareth Hein for 21.0 | |
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37 GIF support changed to external giflib by Jerry James for 21.5 |
| 428 | 38 TODO: |
| 39 Convert images.el to C and stick it in here? | |
| 3094 | 40 This file is really repetitious; can we refactor? |
| 428 | 41 */ |
| 42 | |
| 43 #include <config.h> | |
| 44 #include "lisp.h" | |
| 45 #include "lstream.h" | |
| 46 #include "console.h" | |
| 872 | 47 #include "device-impl.h" |
| 428 | 48 #include "faces.h" |
| 49 #include "glyphs.h" | |
| 872 | 50 #include "objects-impl.h" |
| 428 | 51 |
| 52 #include "buffer.h" | |
| 53 #include "frame.h" | |
| 54 #include "opaque.h" | |
| 442 | 55 #include "window.h" |
| 428 | 56 |
| 57 #include "sysfile.h" | |
| 58 | |
| 59 #ifdef HAVE_PNG | |
| 1743 | 60 |
| 61 BEGIN_C_DECLS | |
| 62 | |
| 647 | 63 #define message message_ /* Yuck */ |
| 428 | 64 #include <png.h> |
| 647 | 65 #undef message |
| 1743 | 66 |
| 67 END_C_DECLS | |
| 68 | |
| 428 | 69 #else |
| 70 #include <setjmp.h> | |
| 71 #endif | |
| 72 #include "file-coding.h" | |
| 73 | |
| 74 #ifdef HAVE_TIFF | |
| 75 DEFINE_IMAGE_INSTANTIATOR_FORMAT (tiff); | |
| 76 Lisp_Object Qtiff; | |
| 77 #endif | |
| 78 | |
| 79 #ifdef HAVE_JPEG | |
| 80 DEFINE_IMAGE_INSTANTIATOR_FORMAT (jpeg); | |
| 81 Lisp_Object Qjpeg; | |
| 82 #endif | |
| 83 | |
| 84 #ifdef HAVE_GIF | |
| 85 DEFINE_IMAGE_INSTANTIATOR_FORMAT (gif); | |
| 86 Lisp_Object Qgif; | |
| 87 #endif | |
| 88 | |
| 89 #ifdef HAVE_PNG | |
| 90 DEFINE_IMAGE_INSTANTIATOR_FORMAT (png); | |
| 91 Lisp_Object Qpng; | |
| 92 #endif | |
| 93 | |
| 94 | |
| 95 #ifdef HAVE_JPEG | |
| 96 | |
| 97 /********************************************************************** | |
| 98 * JPEG * | |
| 99 **********************************************************************/ | |
| 100 | |
| 1743 | 101 BEGIN_C_DECLS |
| 102 | |
| 4854 | 103 #ifdef WIN32_ANY |
| 104 /* #### Yuck! More horrifitude. tiffio.h, below, and sysfile.h above, | |
| 105 include <windows.h>, which defines INT32 and INT16, the former | |
| 106 differently and incompatibly from jmorecfg.h, included by jpeglib.h. We | |
| 107 can disable the stuff in jmorecfg.h by defining XMD_H (clever, huh?); | |
| 108 then we define these typedefs the way that <windows.h> wants them (which | |
| 109 is more correct, anyway; jmorecfg.h defines INT32 as `long'). */ | |
| 2500 | 110 #define XMD_H |
| 111 typedef signed int INT32; | |
| 112 typedef signed short INT16; | |
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113 |
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114 /* And another one... jmorecfg.h defines the 'boolean' type as int, |
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115 which conflicts with the standard Windows 'boolean' definition as |
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116 unsigned char. Ref: http://www.asmail.be/msg0054688232.html */ |
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117 #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ |
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118 typedef unsigned char boolean; |
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119 #endif |
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120 #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ |
| 2500 | 121 #endif |
| 122 | |
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123 /* Yet more breakage... jmorecfg.h unconditionally defines FAR either as |
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124 "far" or as blank. Windef.h unconditionally defines FAR as "far". |
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125 We'll avoid the compile warning by redefing FAR the way windows defines it, |
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126 after loading the JPEG headers. */ |
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127 #undef FAR |
| 428 | 128 #include <jpeglib.h> |
| 129 #include <jerror.h> | |
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130 #undef FAR |
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131 #define FAR far |
| 1743 | 132 |
| 133 END_C_DECLS | |
| 428 | 134 |
| 135 /*#define USE_TEMP_FILES_FOR_JPEG_IMAGES 1*/ | |
| 136 static void | |
| 137 jpeg_validate (Lisp_Object instantiator) | |
| 138 { | |
| 139 file_or_data_must_be_present (instantiator); | |
| 140 } | |
| 141 | |
| 142 static Lisp_Object | |
| 442 | 143 jpeg_normalize (Lisp_Object inst, Lisp_Object console_type, |
| 2286 | 144 Lisp_Object UNUSED (dest_mask)) |
| 428 | 145 { |
| 146 return simple_image_type_normalize (inst, console_type, Qjpeg); | |
| 147 } | |
| 148 | |
| 149 static int | |
| 150 jpeg_possible_dest_types (void) | |
| 151 { | |
| 152 return IMAGE_COLOR_PIXMAP_MASK; | |
| 153 } | |
| 154 | |
| 155 /* To survive the otherwise baffling complexity of making sure | |
| 156 everything gets cleaned up in the presence of an error, we | |
| 157 use an unwind_protect(). */ | |
| 158 | |
| 159 struct jpeg_unwind_data | |
| 160 { | |
| 161 /* Stream that we need to close */ | |
| 162 FILE *instream; | |
| 163 /* Object that holds state info for JPEG decoding */ | |
| 164 struct jpeg_decompress_struct *cinfo_ptr; | |
| 165 /* EImage data */ | |
| 2367 | 166 Binbyte *eimage; |
| 428 | 167 }; |
| 168 | |
| 169 static Lisp_Object | |
| 170 jpeg_instantiate_unwind (Lisp_Object unwind_obj) | |
| 171 { | |
| 172 struct jpeg_unwind_data *data = | |
| 173 (struct jpeg_unwind_data *) get_opaque_ptr (unwind_obj); | |
| 174 | |
| 175 free_opaque_ptr (unwind_obj); | |
| 176 if (data->cinfo_ptr) | |
| 177 jpeg_destroy_decompress (data->cinfo_ptr); | |
| 178 | |
| 179 if (data->instream) | |
| 771 | 180 retry_fclose (data->instream); |
| 428 | 181 |
| 1726 | 182 if (data->eimage) |
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183 xfree (data->eimage); |
| 428 | 184 |
| 185 return Qnil; | |
| 186 } | |
| 187 | |
| 188 /* | |
| 189 * ERROR HANDLING: | |
| 190 * | |
| 191 * The JPEG library's standard error handler (jerror.c) is divided into | |
| 192 * several "methods" which you can override individually. This lets you | |
| 193 * adjust the behavior without duplicating a lot of code, which you might | |
| 194 * have to update with each future release. | |
| 195 * | |
| 196 * Our example here shows how to override the "error_exit" method so that | |
| 197 * control is returned to the library's caller when a fatal error occurs, | |
| 198 * rather than calling exit() as the standard error_exit method does. | |
| 199 * | |
| 200 * We use C's setjmp/longjmp facility to return control. This means that the | |
| 201 * routine which calls the JPEG library must first execute a setjmp() call to | |
| 202 * establish the return point. We want the replacement error_exit to do a | |
| 203 * longjmp(). But we need to make the setjmp buffer accessible to the | |
| 204 * error_exit routine. To do this, we make a private extension of the | |
| 205 * standard JPEG error handler object. (If we were using C++, we'd say we | |
| 206 * were making a subclass of the regular error handler.) | |
| 207 * | |
| 208 * Here's the extended error handler struct: | |
| 209 */ | |
| 210 | |
| 211 struct my_jpeg_error_mgr | |
| 212 { | |
| 213 struct jpeg_error_mgr pub; /* "public" fields */ | |
| 214 jmp_buf setjmp_buffer; /* for return to caller */ | |
| 215 }; | |
| 216 | |
| 217 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) | |
| 218 METHODDEF(void) | |
| 219 #else | |
| 220 METHODDEF void | |
| 221 #endif | |
| 2286 | 222 our_init_source (j_decompress_ptr UNUSED (cinfo)) |
| 428 | 223 { |
| 224 } | |
| 225 | |
| 226 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) | |
| 227 METHODDEF(boolean) | |
| 228 #else | |
| 229 METHODDEF boolean | |
| 230 #endif | |
| 231 our_fill_input_buffer (j_decompress_ptr cinfo) | |
| 232 { | |
| 233 /* Insert a fake EOI marker */ | |
| 234 struct jpeg_source_mgr *src = cinfo->src; | |
| 235 static JOCTET buffer[2]; | |
| 236 | |
| 237 buffer[0] = (JOCTET) 0xFF; | |
| 238 buffer[1] = (JOCTET) JPEG_EOI; | |
| 239 | |
| 240 src->next_input_byte = buffer; | |
| 241 src->bytes_in_buffer = 2; | |
| 242 return TRUE; | |
| 243 } | |
| 244 | |
| 245 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) | |
| 246 METHODDEF(void) | |
| 247 #else | |
| 248 METHODDEF void | |
| 249 #endif | |
| 250 our_skip_input_data (j_decompress_ptr cinfo, long num_bytes) | |
| 251 { | |
| 252 struct jpeg_source_mgr *src = NULL; | |
| 253 | |
| 254 src = (struct jpeg_source_mgr *) cinfo->src; | |
| 255 | |
| 256 if (!src) | |
| 647 | 257 return; |
| 258 else if (num_bytes > (long) src->bytes_in_buffer) | |
| 428 | 259 { |
| 647 | 260 ERREXIT (cinfo, JERR_INPUT_EOF); |
| 261 /*NOTREACHED*/ | |
| 262 } | |
| 428 | 263 |
| 264 src->bytes_in_buffer -= num_bytes; | |
| 265 src->next_input_byte += num_bytes; | |
| 266 } | |
| 267 | |
| 268 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) | |
| 269 METHODDEF(void) | |
| 270 #else | |
| 271 METHODDEF void | |
| 272 #endif | |
| 2286 | 273 our_term_source (j_decompress_ptr UNUSED (cinfo)) |
| 428 | 274 { |
| 275 } | |
| 276 | |
| 277 typedef struct | |
| 278 { | |
| 279 struct jpeg_source_mgr pub; | |
| 280 } our_jpeg_source_mgr; | |
| 281 | |
| 282 static void | |
| 665 | 283 jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, Bytecount len) |
| 428 | 284 { |
| 285 struct jpeg_source_mgr *src; | |
| 286 | |
| 287 if (cinfo->src == NULL) | |
| 288 { /* first time for this JPEG object? */ | |
| 289 cinfo->src = (struct jpeg_source_mgr *) | |
| 290 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
| 291 sizeof(our_jpeg_source_mgr)); | |
| 292 src = (struct jpeg_source_mgr *) cinfo->src; | |
| 293 src->next_input_byte = data; | |
| 294 } | |
| 295 src = (struct jpeg_source_mgr *) cinfo->src; | |
| 296 src->init_source = our_init_source; | |
| 297 src->fill_input_buffer = our_fill_input_buffer; | |
| 298 src->skip_input_data = our_skip_input_data; | |
| 299 src->resync_to_restart = jpeg_resync_to_restart; /* use default method */ | |
| 300 src->term_source = our_term_source; | |
| 301 src->bytes_in_buffer = len; | |
| 302 src->next_input_byte = data; | |
| 303 } | |
| 304 | |
| 305 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) | |
| 306 METHODDEF(void) | |
| 307 #else | |
| 308 METHODDEF void | |
| 309 #endif | |
| 310 my_jpeg_error_exit (j_common_ptr cinfo) | |
| 311 { | |
| 312 /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */ | |
| 313 struct my_jpeg_error_mgr *myerr = (struct my_jpeg_error_mgr *) cinfo->err; | |
| 314 | |
| 315 /* Return control to the setjmp point */ | |
| 316 longjmp (myerr->setjmp_buffer, 1); | |
| 317 } | |
| 318 | |
| 319 #if defined(JPEG_LIB_VERSION) && (JPEG_LIB_VERSION >= 61) | |
| 320 METHODDEF(void) | |
| 321 #else | |
| 322 METHODDEF void | |
| 323 #endif | |
| 324 my_jpeg_output_message (j_common_ptr cinfo) | |
| 325 { | |
| 771 | 326 Extbyte buffer[JMSG_LENGTH_MAX]; |
| 867 | 327 Ibyte *intbuf; |
| 428 | 328 |
| 329 /* Create the message */ | |
| 330 (*cinfo->err->format_message) (cinfo, buffer); | |
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331 intbuf = EXTERNAL_TO_ITEXT (buffer, Qjpeg_error_message_encoding); |
| 771 | 332 warn_when_safe (Qjpeg, Qinfo, "%s", intbuf); |
| 428 | 333 } |
| 334 | |
| 335 /* The code in this routine is based on example.c from the JPEG library | |
| 336 source code and from gif_instantiate() */ | |
| 337 static void | |
| 338 jpeg_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, | |
| 2959 | 339 Lisp_Object pointer_fg, Lisp_Object pointer_bg, |
| 428 | 340 int dest_mask, Lisp_Object domain) |
| 341 { | |
| 440 | 342 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); |
| 428 | 343 /* It is OK for the unwind data to be local to this function, |
| 344 because the unwind-protect is always executed when this | |
| 345 stack frame is still valid. */ | |
| 346 struct jpeg_unwind_data unwind; | |
| 347 int speccount = specpdl_depth (); | |
| 348 | |
| 349 /* This struct contains the JPEG decompression parameters and pointers to | |
| 350 * working space (which is allocated as needed by the JPEG library). | |
| 351 */ | |
| 352 struct jpeg_decompress_struct cinfo; | |
| 353 /* We use our private extension JPEG error handler. | |
| 354 * Note that this struct must live as long as the main JPEG parameter | |
| 355 * struct, to avoid dangling-pointer problems. | |
| 356 */ | |
| 357 struct my_jpeg_error_mgr jerr; | |
| 358 | |
| 359 /* Step -1: First record our unwind-protect, which will clean up after | |
| 360 any exit, normal or not */ | |
| 361 | |
| 362 xzero (unwind); | |
| 363 record_unwind_protect (jpeg_instantiate_unwind, make_opaque_ptr (&unwind)); | |
| 364 | |
| 365 /* Step 1: allocate and initialize JPEG decompression object */ | |
| 366 | |
| 367 /* We set up the normal JPEG error routines, then override error_exit. */ | |
| 368 cinfo.err = jpeg_std_error (&jerr.pub); | |
| 369 jerr.pub.error_exit = my_jpeg_error_exit; | |
| 370 jerr.pub.output_message = my_jpeg_output_message; | |
| 371 | |
| 372 /* Establish the setjmp return context for my_error_exit to use. */ | |
| 373 if (setjmp (jerr.setjmp_buffer)) | |
| 374 { | |
| 375 /* If we get here, the JPEG code has signaled an error. | |
| 376 * We need to clean up the JPEG object, close the input file, and return. | |
| 377 */ | |
| 378 | |
| 379 { | |
| 380 Lisp_Object errstring; | |
| 771 | 381 Extbyte buffer[JMSG_LENGTH_MAX]; |
| 428 | 382 |
| 383 /* Create the message */ | |
| 384 (*cinfo.err->format_message) ((j_common_ptr) &cinfo, buffer); | |
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385 errstring = build_extstring (buffer, Qjpeg_error_message_encoding); |
| 428 | 386 |
| 387 signal_image_error_2 ("JPEG decoding error", | |
| 388 errstring, instantiator); | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 /* Now we can initialize the JPEG decompression object. */ | |
| 393 jpeg_create_decompress (&cinfo); | |
| 394 unwind.cinfo_ptr = &cinfo; | |
| 395 | |
| 396 /* Step 2: specify data source (eg, a file) */ | |
| 397 | |
| 398 { | |
| 399 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); | |
| 2367 | 400 const Binbyte *bytes; |
| 665 | 401 Bytecount len; |
| 428 | 402 |
| 403 /* #### This is a definite problem under Mule due to the amount of | |
| 404 stack data it might allocate. Need to be able to convert and | |
| 405 write out to a file. */ | |
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406 LISP_STRING_TO_SIZED_EXTERNAL (data, bytes, len, Qbinary); |
| 428 | 407 jpeg_memory_src (&cinfo, (JOCTET *) bytes, len); |
| 408 } | |
| 409 | |
| 410 /* Step 3: read file parameters with jpeg_read_header() */ | |
| 411 | |
| 412 jpeg_read_header (&cinfo, TRUE); | |
| 413 /* We can ignore the return value from jpeg_read_header since | |
| 414 * (a) suspension is not possible with the stdio data source, and | |
| 415 * (b) we passed TRUE to reject a tables-only JPEG file as an error. | |
| 416 * See libjpeg.doc for more info. | |
| 417 */ | |
| 418 | |
| 419 { | |
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420 UINT_64_BIT pixels_sq; |
| 428 | 421 int jpeg_gray = 0; /* if we're dealing with a grayscale */ |
| 422 /* Step 4: set parameters for decompression. */ | |
| 423 | |
| 424 /* Now that we're using EImages, send all data as 24bit color. | |
| 425 The backend routine will take care of any necessary reductions. | |
| 426 We do have to handle the grayscale case ourselves, however. */ | |
| 427 if (cinfo.jpeg_color_space == JCS_GRAYSCALE) | |
| 428 { | |
| 429 cinfo.out_color_space = JCS_GRAYSCALE; | |
| 430 jpeg_gray = 1; | |
| 431 } | |
| 432 else | |
| 433 { | |
| 434 /* we're relying on the jpeg driver to do any other conversions, | |
| 435 or signal an error if the conversion isn't supported. */ | |
| 436 cinfo.out_color_space = JCS_RGB; | |
| 437 } | |
| 438 | |
| 439 /* Step 5: Start decompressor */ | |
| 440 jpeg_start_decompress (&cinfo); | |
| 441 | |
| 442 /* Step 6: Read in the data and put into EImage format (8bit RGB triples)*/ | |
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443 pixels_sq = |
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444 (UINT_64_BIT) cinfo.output_width * (UINT_64_BIT) cinfo.output_height; |
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445 if (pixels_sq > ((size_t) -1) / 3) |
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446 signal_image_error ("JPEG image too large to instantiate", instantiator); |
| 2367 | 447 unwind.eimage = |
| 448 xnew_binbytes (cinfo.output_width * cinfo.output_height * 3); | |
| 428 | 449 if (!unwind.eimage) |
| 450 signal_image_error("Unable to allocate enough memory for image", instantiator); | |
| 451 | |
| 452 { | |
| 453 JSAMPARRAY row_buffer; /* Output row buffer */ | |
| 454 JSAMPLE *jp; | |
| 455 int row_stride; /* physical row width in output buffer */ | |
| 2367 | 456 Binbyte *op = unwind.eimage; |
| 428 | 457 |
| 458 /* We may need to do some setup of our own at this point before reading | |
| 459 * the data. After jpeg_start_decompress() we have the correct scaled | |
| 460 * output image dimensions available | |
| 461 * We need to make an output work buffer of the right size. | |
| 462 */ | |
| 463 /* JSAMPLEs per row in output buffer. */ | |
| 464 row_stride = cinfo.output_width * cinfo.output_components; | |
| 465 /* Make a one-row-high sample array that will go away when done | |
| 466 with image */ | |
| 467 row_buffer = ((*cinfo.mem->alloc_sarray) | |
| 468 ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1)); | |
| 469 | |
| 470 /* Here we use the library's state variable cinfo.output_scanline as the | |
| 471 * loop counter, so that we don't have to keep track ourselves. | |
| 472 */ | |
| 473 while (cinfo.output_scanline < cinfo.output_height) | |
| 474 { | |
| 475 int i; | |
| 476 | |
| 477 /* jpeg_read_scanlines expects an array of pointers to scanlines. | |
| 478 * Here the array is only one element long, but you could ask for | |
| 479 * more than one scanline at a time if that's more convenient. | |
| 480 */ | |
| 481 (void) jpeg_read_scanlines (&cinfo, row_buffer, 1); | |
| 482 jp = row_buffer[0]; | |
| 647 | 483 for (i = 0; i < (int) cinfo.output_width; i++) |
| 428 | 484 { |
| 485 int clr; | |
| 486 if (jpeg_gray) | |
| 487 { | |
| 2367 | 488 Binbyte val; |
| 428 | 489 #if (BITS_IN_JSAMPLE == 8) |
| 2367 | 490 val = (Binbyte) *jp++; |
| 428 | 491 #else /* other option is 12 */ |
| 2367 | 492 val = (Binbyte) (*jp++ >> 4); |
| 428 | 493 #endif |
| 494 for (clr = 0; clr < 3; clr++) /* copy the same value into RGB */ | |
| 495 *op++ = val; | |
| 496 } | |
| 497 else | |
| 498 { | |
| 499 for (clr = 0; clr < 3; clr++) | |
| 500 #if (BITS_IN_JSAMPLE == 8) | |
| 2367 | 501 *op++ = (Binbyte)*jp++; |
| 428 | 502 #else /* other option is 12 */ |
| 2367 | 503 *op++ = (Binbyte)(*jp++ >> 4); |
| 428 | 504 #endif |
| 505 } | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 } | |
| 510 | |
| 511 /* Step 6.5: Create the pixmap and set up the image instance */ | |
| 512 /* now instantiate */ | |
| 442 | 513 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain), |
| 428 | 514 init_image_instance_from_eimage, |
| 515 (ii, cinfo.output_width, cinfo.output_height, 1, | |
| 516 unwind.eimage, dest_mask, | |
| 2959 | 517 instantiator, pointer_fg, pointer_bg, domain)); |
| 428 | 518 |
| 519 /* Step 7: Finish decompression */ | |
| 520 | |
| 521 jpeg_finish_decompress (&cinfo); | |
| 522 /* We can ignore the return value since suspension is not possible | |
| 523 * with the stdio data source. | |
| 524 */ | |
| 525 | |
| 526 /* And we're done! */ | |
| 527 /* This will clean up everything else. */ | |
| 771 | 528 unbind_to (speccount); |
| 428 | 529 } |
| 530 | |
| 531 #endif /* HAVE_JPEG */ | |
| 532 | |
| 533 #ifdef HAVE_GIF | |
| 534 /********************************************************************** | |
| 535 * GIF * | |
| 536 **********************************************************************/ | |
| 537 | |
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538 #include <gif_lib.h> |
| 428 | 539 |
| 540 static void | |
| 541 gif_validate (Lisp_Object instantiator) | |
| 542 { | |
| 543 file_or_data_must_be_present (instantiator); | |
| 544 } | |
| 545 | |
| 546 static Lisp_Object | |
| 442 | 547 gif_normalize (Lisp_Object inst, Lisp_Object console_type, |
| 2286 | 548 Lisp_Object UNUSED (dest_mask)) |
| 428 | 549 { |
| 550 return simple_image_type_normalize (inst, console_type, Qgif); | |
| 551 } | |
| 552 | |
| 553 static int | |
| 554 gif_possible_dest_types (void) | |
| 555 { | |
| 556 return IMAGE_COLOR_PIXMAP_MASK; | |
| 557 } | |
| 558 | |
| 559 /* To survive the otherwise baffling complexity of making sure | |
| 560 everything gets cleaned up in the presence of an error, we | |
| 561 use an unwind_protect(). */ | |
| 562 | |
| 563 struct gif_unwind_data | |
| 564 { | |
| 2367 | 565 Binbyte *eimage; |
| 428 | 566 /* Object that holds the decoded data from a GIF file */ |
| 567 GifFileType *giffile; | |
| 568 }; | |
| 569 | |
| 570 static Lisp_Object | |
| 571 gif_instantiate_unwind (Lisp_Object unwind_obj) | |
| 572 { | |
| 573 struct gif_unwind_data *data = | |
| 574 (struct gif_unwind_data *) get_opaque_ptr (unwind_obj); | |
| 575 | |
| 576 free_opaque_ptr (unwind_obj); | |
| 577 if (data->giffile) | |
| 578 { | |
| 579 DGifCloseFile (data->giffile); | |
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580 FreeSavedImages(data->giffile); |
| 428 | 581 } |
| 647 | 582 if (data->eimage) |
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583 xfree (data->eimage); |
| 428 | 584 |
| 585 return Qnil; | |
| 586 } | |
| 587 | |
| 588 typedef struct gif_memory_storage | |
| 589 { | |
| 2367 | 590 Binbyte *bytes; /* The data */ |
| 665 | 591 Bytecount len; /* How big is it? */ |
| 592 Bytecount index; /* Where are we? */ | |
| 428 | 593 } gif_memory_storage; |
| 594 | |
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595 static int |
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596 gif_read_from_memory (GifFileType *gif, GifByteType *buf, int size) |
| 428 | 597 { |
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598 gif_memory_storage *mem = (gif_memory_storage *) gif->UserData; |
| 428 | 599 |
| 600 if (size > (mem->len - mem->index)) | |
| 647 | 601 return -1; |
| 602 memcpy (buf, mem->bytes + mem->index, size); | |
| 428 | 603 mem->index = mem->index + size; |
| 604 return size; | |
| 605 } | |
| 606 | |
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607 static const char * |
|
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608 gif_decode_error_string (void) |
| 428 | 609 { |
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610 switch (GifLastError ()) |
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611 { |
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612 case D_GIF_ERR_OPEN_FAILED: |
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613 return "GIF error: unable to open"; |
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614 case D_GIF_ERR_READ_FAILED: |
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615 return "GIF error: read failed"; |
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616 case D_GIF_ERR_NOT_GIF_FILE: |
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617 return "GIF error: not a GIF file"; |
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618 case D_GIF_ERR_NO_SCRN_DSCR: |
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619 return "GIF error: no Screen Descriptor detected"; |
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620 case D_GIF_ERR_NO_IMAG_DSCR: |
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621 return "GIF error: no Image Descriptor detected"; |
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622 case D_GIF_ERR_NO_COLOR_MAP: |
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623 return "GIF error: no global or local color map"; |
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624 case D_GIF_ERR_WRONG_RECORD: |
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625 return "GIF error: wrong record type"; |
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626 case D_GIF_ERR_DATA_TOO_BIG: |
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627 return "GIF error: image is larger than indicated by header"; |
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628 case D_GIF_ERR_NOT_ENOUGH_MEM: |
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629 return "GIF error: out of memory"; |
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630 case D_GIF_ERR_CLOSE_FAILED: |
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631 return "GIF error: failed to close file"; |
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632 case D_GIF_ERR_NOT_READABLE: |
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633 return "GIF error: file is not readable"; |
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634 case D_GIF_ERR_IMAGE_DEFECT: |
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635 return "GIF error: image is defective"; |
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636 case D_GIF_ERR_EOF_TOO_SOON: |
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637 return "GIF error: image EOF detected before image complete"; |
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638 default: |
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639 return "GIF error: unknown error"; |
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640 } |
| 428 | 641 } |
| 642 | |
| 643 static void | |
| 644 gif_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, | |
| 2959 | 645 Lisp_Object pointer_fg, Lisp_Object pointer_bg, |
| 428 | 646 int dest_mask, Lisp_Object domain) |
| 647 { | |
| 440 | 648 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); |
| 428 | 649 /* It is OK for the unwind data to be local to this function, |
| 650 because the unwind-protect is always executed when this | |
| 651 stack frame is still valid. */ | |
| 652 struct gif_unwind_data unwind; | |
| 653 int speccount = specpdl_depth (); | |
| 654 gif_memory_storage mem_struct; | |
| 2367 | 655 Binbyte *bytes; |
| 665 | 656 Bytecount len; |
| 428 | 657 int height = 0; |
| 658 int width = 0; | |
| 659 | |
| 660 xzero (unwind); | |
| 661 record_unwind_protect (gif_instantiate_unwind, make_opaque_ptr (&unwind)); | |
| 662 | |
| 663 /* 1. Now decode the data. */ | |
| 664 | |
| 665 { | |
| 666 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); | |
| 667 | |
| 668 assert (!NILP (data)); | |
| 669 | |
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670 LISP_STRING_TO_SIZED_EXTERNAL (data, bytes, len, Qbinary); |
| 428 | 671 mem_struct.bytes = bytes; |
| 672 mem_struct.len = len; | |
| 673 mem_struct.index = 0; | |
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674 unwind.giffile = DGifOpen (&mem_struct, gif_read_from_memory); |
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675 if (unwind.giffile == NULL) |
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676 signal_image_error (gif_decode_error_string (), instantiator); |
| 428 | 677 |
| 678 /* Then slurp the image into memory, decoding along the way. | |
| 679 The result is the image in a simple one-byte-per-pixel | |
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680 format. */ |
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681 if (DGifSlurp (unwind.giffile) == GIF_ERROR) |
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682 signal_image_error (gif_decode_error_string (), instantiator); |
| 428 | 683 } |
| 684 | |
| 685 /* 3. Now create the EImage(s) */ | |
| 686 { | |
| 687 ColorMapObject *cmo = unwind.giffile->SColorMap; | |
| 688 int i, j, row, pass, interlace, slice; | |
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689 UINT_64_BIT pixels_sq; |
| 2367 | 690 Binbyte *eip; |
| 428 | 691 /* interlaced gifs have rows in this order: |
| 692 0, 8, 16, ..., 4, 12, 20, ..., 2, 6, 10, ..., 1, 3, 5, ... */ | |
| 693 static int InterlacedOffset[] = { 0, 4, 2, 1 }; | |
| 694 static int InterlacedJumps[] = { 8, 8, 4, 2 }; | |
| 695 | |
| 696 height = unwind.giffile->SHeight; | |
| 697 width = unwind.giffile->SWidth; | |
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698 pixels_sq = (UINT_64_BIT) width * (UINT_64_BIT) height; |
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699 if (pixels_sq > ((size_t) -1) / (3 * unwind.giffile->ImageCount)) |
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700 signal_image_error ("GIF image too large to instantiate", instantiator); |
| 2367 | 701 unwind.eimage = |
| 702 xnew_binbytes (width * height * 3 * unwind.giffile->ImageCount); | |
| 428 | 703 if (!unwind.eimage) |
| 704 signal_image_error("Unable to allocate enough memory for image", instantiator); | |
| 705 | |
| 706 /* write the data in EImage format (8bit RGB triples) */ | |
| 707 | |
| 708 for (slice = 0; slice < unwind.giffile->ImageCount; slice++) | |
| 709 { | |
| 638 | 710 /* We check here that the current image covers the full "screen" size. */ |
| 428 | 711 if (unwind.giffile->SavedImages[slice].ImageDesc.Height != height |
| 712 || unwind.giffile->SavedImages[slice].ImageDesc.Width != width | |
| 713 || unwind.giffile->SavedImages[slice].ImageDesc.Left != 0 | |
| 714 || unwind.giffile->SavedImages[slice].ImageDesc.Top != 0) | |
| 715 signal_image_error ("Image in GIF file is not full size", | |
| 716 instantiator); | |
| 717 | |
| 718 interlace = unwind.giffile->SavedImages[slice].ImageDesc.Interlace; | |
| 719 pass = 0; | |
| 720 row = interlace ? InterlacedOffset[pass] : 0; | |
| 721 eip = unwind.eimage + (width * height * 3 * slice); | |
| 722 for (i = 0; i < height; i++) | |
| 723 { | |
| 724 if (interlace) | |
| 725 if (row >= height) { | |
| 726 row = InterlacedOffset[++pass]; | |
| 727 while (row >= height) | |
| 728 row = InterlacedOffset[++pass]; | |
| 729 } | |
| 730 eip = unwind.eimage + (width * height * 3 * slice) + (row * width * 3); | |
| 731 for (j = 0; j < width; j++) | |
| 732 { | |
| 2367 | 733 Binbyte pixel = |
| 428 | 734 unwind.giffile->SavedImages[slice].RasterBits[(i * width) + j]; |
| 735 *eip++ = cmo->Colors[pixel].Red; | |
| 736 *eip++ = cmo->Colors[pixel].Green; | |
| 737 *eip++ = cmo->Colors[pixel].Blue; | |
| 738 } | |
| 739 row += interlace ? InterlacedJumps[pass] : 1; | |
| 740 } | |
| 741 } | |
| 742 | |
| 743 /* now instantiate */ | |
| 442 | 744 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain), |
| 428 | 745 init_image_instance_from_eimage, |
| 2959 | 746 (ii, width, height, unwind.giffile->ImageCount, |
| 747 unwind.eimage, dest_mask, instantiator, pointer_fg, | |
| 748 pointer_bg, domain)); | |
| 428 | 749 } |
| 750 | |
| 751 /* We read the gif successfully. If we have more than one slice then | |
| 752 animate the gif. */ | |
| 753 if (unwind.giffile->ImageCount > 1) | |
| 754 { | |
| 755 /* See if there is a timeout value. In theory there could be one | |
|
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Jerry James <james@xemacs.org>
parents:
4698
diff
changeset
|
756 for every image - but that makes the implementation way too |
| 428 | 757 complicated for now so we just take the first. */ |
| 758 unsigned short timeout = 0; | |
| 759 Lisp_Object tid; | |
| 760 | |
| 761 if (unwind.giffile->SavedImages[0].Function == GRAPHICS_EXT_FUNC_CODE | |
| 762 && | |
| 763 unwind.giffile->SavedImages[0].ExtensionBlockCount) | |
| 764 { | |
| 765 timeout = (unsigned short) | |
| 438 | 766 ((unwind.giffile->SavedImages[0].ExtensionBlocks[0].Bytes[2] << 8) + |
| 428 | 767 unwind.giffile-> SavedImages[0].ExtensionBlocks[0].Bytes[1]) * 10; |
| 768 } | |
| 769 | |
| 770 /* Too short a timeout will crucify us performance-wise. */ | |
| 771 tid = add_glyph_animated_timeout (timeout > 10 ? timeout : 10, image_instance); | |
| 772 | |
| 773 if (!NILP (tid)) | |
| 774 IMAGE_INSTANCE_PIXMAP_TIMEOUT (ii) = XINT (tid); | |
| 775 } | |
| 438 | 776 |
| 771 | 777 unbind_to (speccount); |
| 428 | 778 } |
| 779 | |
| 780 #endif /* HAVE_GIF */ | |
| 781 | |
| 782 | |
| 783 #ifdef HAVE_PNG | |
| 784 | |
| 785 /********************************************************************** | |
| 786 * PNG * | |
| 787 **********************************************************************/ | |
| 788 static void | |
| 789 png_validate (Lisp_Object instantiator) | |
| 790 { | |
| 791 file_or_data_must_be_present (instantiator); | |
| 792 } | |
| 793 | |
| 794 static Lisp_Object | |
| 442 | 795 png_normalize (Lisp_Object inst, Lisp_Object console_type, |
| 2286 | 796 Lisp_Object UNUSED (dest_mask)) |
| 428 | 797 { |
| 798 return simple_image_type_normalize (inst, console_type, Qpng); | |
| 799 } | |
| 800 | |
| 801 static int | |
| 802 png_possible_dest_types (void) | |
| 803 { | |
| 804 return IMAGE_COLOR_PIXMAP_MASK; | |
| 805 } | |
| 806 | |
| 807 struct png_memory_storage | |
| 808 { | |
| 2367 | 809 const Binbyte *bytes; /* The data */ |
| 665 | 810 Bytecount len; /* How big is it? */ |
| 811 Bytecount index; /* Where are we? */ | |
| 428 | 812 }; |
| 813 | |
| 814 static void | |
| 647 | 815 png_read_from_memory (png_structp png_ptr, png_bytep data, |
| 816 png_size_t length) | |
| 428 | 817 { |
| 818 struct png_memory_storage *tbr = | |
| 819 (struct png_memory_storage *) png_get_io_ptr (png_ptr); | |
| 820 | |
| 665 | 821 if ((Bytecount) length > (tbr->len - tbr->index)) |
| 428 | 822 png_error (png_ptr, (png_const_charp) "Read Error"); |
| 647 | 823 memcpy (data, tbr->bytes + tbr->index,length); |
| 428 | 824 tbr->index = tbr->index + length; |
| 825 } | |
| 826 | |
| 827 struct png_error_struct | |
| 828 { | |
| 442 | 829 const char *err_str; |
| 428 | 830 jmp_buf setjmp_buffer; /* for return to caller */ |
| 831 }; | |
| 832 | |
| 833 /* jh 98/03/12 - #### AARRRGH! libpng includes jmp_buf inside its own | |
| 834 structure, and there are cases where the size can be different from | |
| 835 between inside the library, and inside the code! To do an end run | |
| 836 around this, use our own error functions, and don't rely on things | |
| 837 passed in the png_ptr to them. This is an ugly hack and must | |
| 838 go away when the lisp engine is threaded! */ | |
| 839 static struct png_error_struct png_err_stct; | |
| 840 | |
| 841 static void | |
| 2286 | 842 png_error_func (png_structp UNUSED (png_ptr), png_const_charp msg) |
| 428 | 843 { |
| 844 png_err_stct.err_str = msg; | |
| 845 longjmp (png_err_stct.setjmp_buffer, 1); | |
| 846 } | |
| 847 | |
| 848 static void | |
| 2286 | 849 png_warning_func (png_structp UNUSED (png_ptr), png_const_charp msg) |
| 428 | 850 { |
| 3734 | 851 DECLARE_EISTRING (eimsg); |
| 852 | |
| 853 eicpy_ext(eimsg, msg, Qbinary); | |
| 854 warn_when_safe (Qpng, Qinfo, "%s", eidata(eimsg)); | |
| 428 | 855 } |
| 856 | |
| 857 struct png_unwind_data | |
| 858 { | |
| 859 FILE *instream; | |
| 2367 | 860 Binbyte *eimage; |
| 428 | 861 png_structp png_ptr; |
| 862 png_infop info_ptr; | |
| 863 }; | |
| 864 | |
| 865 static Lisp_Object | |
| 866 png_instantiate_unwind (Lisp_Object unwind_obj) | |
| 867 { | |
| 868 struct png_unwind_data *data = | |
| 869 (struct png_unwind_data *) get_opaque_ptr (unwind_obj); | |
| 870 | |
| 871 free_opaque_ptr (unwind_obj); | |
| 872 if (data->png_ptr) | |
| 3839 | 873 { |
| 874 /* ensure we can't get here again */ | |
| 875 png_structp tmp = data->png_ptr; | |
| 876 data->png_ptr = NULL; | |
| 877 png_destroy_read_struct (&tmp, &(data->info_ptr), (png_infopp)NULL); | |
| 878 } | |
| 879 | |
| 428 | 880 if (data->instream) |
| 771 | 881 retry_fclose (data->instream); |
| 428 | 882 |
| 1726 | 883 if (data->eimage) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4953
diff
changeset
|
884 xfree (data->eimage); |
| 428 | 885 |
| 886 return Qnil; | |
| 887 } | |
| 888 | |
| 889 static void | |
| 890 png_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, | |
| 2959 | 891 Lisp_Object pointer_fg, Lisp_Object pointer_bg, |
| 428 | 892 int dest_mask, Lisp_Object domain) |
| 893 { | |
| 440 | 894 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); |
| 428 | 895 struct png_unwind_data unwind; |
| 896 int speccount = specpdl_depth (); | |
| 897 int height, width; | |
| 898 struct png_memory_storage tbr; /* Data to be read */ | |
| 899 | |
| 900 /* PNG variables */ | |
| 901 png_structp png_ptr; | |
| 902 png_infop info_ptr; | |
| 903 | |
| 3839 | 904 xzero (unwind); |
| 905 record_unwind_protect (png_instantiate_unwind, make_opaque_ptr (&unwind)); | |
| 906 | |
| 907 if (setjmp (png_err_stct.setjmp_buffer)) | |
| 908 { | |
| 909 /* Something blew up: | |
| 910 just display the error (cleanup happens in the unwind) */ | |
| 911 signal_image_error_2 ("Error decoding PNG", | |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
912 build_extstring (png_err_stct.err_str, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4854
diff
changeset
|
913 Qerror_message_encoding), |
| 3839 | 914 instantiator); |
| 915 } | |
| 916 | |
| 428 | 917 /* Initialize all PNG structures */ |
| 3839 | 918 png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, |
| 919 (void *) &png_err_stct, | |
| 428 | 920 png_error_func, png_warning_func); |
| 921 if (!png_ptr) | |
| 922 signal_image_error ("Error obtaining memory for png_read", instantiator); | |
| 3839 | 923 unwind.png_ptr = png_ptr; |
| 924 | |
| 428 | 925 info_ptr = png_create_info_struct (png_ptr); |
| 926 if (!info_ptr) | |
| 927 { | |
| 3839 | 928 unwind.png_ptr = NULL; /* avoid re-calling png_destroy_read_struct |
| 929 when unwinding */ | |
| 428 | 930 png_destroy_read_struct (&png_ptr, (png_infopp)NULL, (png_infopp)NULL); |
| 931 signal_image_error ("Error obtaining memory for png_read", instantiator); | |
| 932 } | |
| 933 unwind.info_ptr = info_ptr; | |
| 934 | |
| 935 /* This code is a mixture of stuff from Ben's GIF/JPEG stuff from | |
| 936 this file, example.c from the libpng 0.81 distribution, and the | |
| 937 pngtopnm sources. -WMP- | |
| 938 */ | |
| 939 /* It has been further modified to handle the API changes for 0.96, | |
| 940 and is no longer usable for previous versions. jh | |
| 941 */ | |
| 942 | |
| 943 /* Initialize the IO layer and read in header information */ | |
| 944 { | |
| 945 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); | |
| 2367 | 946 const Binbyte *bytes; |
| 665 | 947 Bytecount len; |
| 428 | 948 |
| 949 assert (!NILP (data)); | |
| 950 | |
| 951 /* #### This is a definite problem under Mule due to the amount of | |
| 952 stack data it might allocate. Need to think about using Lstreams */ | |
|
4981
4aebb0131297
Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4953
diff
changeset
|
953 LISP_STRING_TO_SIZED_EXTERNAL (data, bytes, len, Qbinary); |
| 428 | 954 tbr.bytes = bytes; |
| 955 tbr.len = len; | |
| 956 tbr.index = 0; | |
| 957 png_set_read_fn (png_ptr,(void *) &tbr, png_read_from_memory); | |
| 958 } | |
| 959 | |
| 960 png_read_info (png_ptr, info_ptr); | |
| 961 | |
| 962 { | |
|
4698
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
963 int y, padding; |
| 2367 | 964 Binbyte **row_pointers; |
|
4646
6c6bfdb80a0c
Prevent integer overflow and subsequent crashes when attempting to load large
Jerry James <james@xemacs.org>
parents:
4326
diff
changeset
|
965 UINT_64_BIT pixels_sq; |
| 428 | 966 height = info_ptr->height; |
| 967 width = info_ptr->width; | |
|
4646
6c6bfdb80a0c
Prevent integer overflow and subsequent crashes when attempting to load large
Jerry James <james@xemacs.org>
parents:
4326
diff
changeset
|
968 pixels_sq = (UINT_64_BIT) width * (UINT_64_BIT) height; |
|
6c6bfdb80a0c
Prevent integer overflow and subsequent crashes when attempting to load large
Jerry James <james@xemacs.org>
parents:
4326
diff
changeset
|
969 if (pixels_sq > ((size_t) -1) / 3) |
|
6c6bfdb80a0c
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Jerry James <james@xemacs.org>
parents:
4326
diff
changeset
|
970 signal_image_error ("PNG image too large to instantiate", instantiator); |
| 428 | 971 |
|
4698
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
972 /* Wow, allocate all the memory. Truly, exciting. |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
973 Well, yes, there's excitement to be had. It turns out that libpng |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
974 strips in place, so the last row overruns the buffer if depth is 16 |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
975 or there's an alpha channel. This is a crash on Linux. So we need |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
976 to add padding. |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
977 The worst case is reducing 8 bytes (16-bit RGBA) to 3 (8-bit RGB). */ |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
978 |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
979 padding = 5 * width; |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
980 unwind.eimage = xnew_array_and_zero (Binbyte, |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
981 (size_t) (pixels_sq * 3 + padding)); |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
982 |
| 428 | 983 /* libpng expects that the image buffer passed in contains a |
| 984 picture to draw on top of if the png has any transparencies. | |
| 985 This could be a good place to pass that in... */ | |
| 986 | |
| 987 row_pointers = xnew_array (png_byte *, height); | |
| 988 for (y = 0; y < height; y++) | |
| 989 row_pointers[y] = unwind.eimage + (width * 3 * y); | |
| 990 | |
| 991 { | |
| 992 /* if the png specifies a background chunk, go ahead and | |
| 993 use it, else use what we can get from the default face. */ | |
| 994 png_color_16 my_background, *image_background; | |
| 995 Lisp_Object bkgd = Qnil; | |
| 996 | |
| 997 my_background.red = 0x7fff; | |
| 998 my_background.green = 0x7fff; | |
| 999 my_background.blue = 0x7fff; | |
| 1000 bkgd = FACE_BACKGROUND (Vdefault_face, domain); | |
| 1001 if (!COLOR_INSTANCEP (bkgd)) | |
| 1002 { | |
| 1003 warn_when_safe (Qpng, Qinfo, "Couldn't get background color!"); | |
| 1004 } | |
| 1005 else | |
| 1006 { | |
|
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a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1007 Lisp_Color_Instance *c = XCOLOR_INSTANCE (bkgd); |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1008 Lisp_Object rgb = MAYBE_LISP_DEVMETH (XDEVICE (c->device), |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1009 color_instance_rgb_components, |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1010 (c)); |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1011 #define GETCOLOR(col) my_background.col = (unsigned short) XINT (XCAR (rgb)) |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1012 GETCOLOR(red); rgb = XCDR (rgb); |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1013 GETCOLOR(green); rgb = XCDR (rgb); |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1014 GETCOLOR(blue); |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1015 #undef GETCOLOR |
| 428 | 1016 } |
| 1017 | |
| 1018 if (png_get_bKGD (png_ptr, info_ptr, &image_background)) | |
| 1019 png_set_background (png_ptr, image_background, | |
| 1020 PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); | |
| 1021 else | |
| 1022 png_set_background (png_ptr, &my_background, | |
| 1023 PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
| 1024 } | |
| 1025 | |
| 1026 /* Now that we're using EImage, ask for 8bit RGB triples for any type | |
| 1027 of image*/ | |
|
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1028 /* convert palette images to RGB */ |
| 428 | 1029 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
|
4698
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1030 png_set_palette_to_rgb (png_ptr); |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1031 /* convert grayscale images to RGB */ |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1032 else if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY || |
| 428 | 1033 info_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
| 1034 png_set_gray_to_rgb (png_ptr); | |
|
4698
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1035 /* pad images with depth < 8 bits */ |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1036 else if (info_ptr->bit_depth < 8) |
| 428 | 1037 { |
| 1038 if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY) | |
| 1039 png_set_expand (png_ptr); | |
| 1040 else | |
| 1041 png_set_packing (png_ptr); | |
| 1042 } | |
|
4698
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1043 /* strip 16-bit depth files down to 8 bits */ |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1044 if (info_ptr->bit_depth == 16) |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1045 png_set_strip_16 (png_ptr); |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1046 /* strip alpha channel |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1047 #### shouldn't we handle this? |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1048 first call png_read_update_info in case above transformations |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1049 have generated an alpha channel */ |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1050 png_read_update_info(png_ptr, info_ptr); |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1051 if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1052 png_set_strip_alpha (png_ptr); |
| 428 | 1053 |
| 1054 png_read_image (png_ptr, row_pointers); | |
| 1055 png_read_end (png_ptr, info_ptr); | |
| 1056 | |
|
4698
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1057 /* #### There should be some way to pass this type of data down |
|
a9493cab536f
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Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1058 * into the glyph code, where you can get to it from lisp |
|
a9493cab536f
Fix crash due to mishandling transparency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4682
diff
changeset
|
1059 * anyway. - WMP */ |
| 428 | 1060 { |
| 1061 int i; | |
| 3734 | 1062 DECLARE_EISTRING (key); |
| 1063 DECLARE_EISTRING (text); | |
| 428 | 1064 |
| 1065 for (i = 0 ; i < info_ptr->num_text ; i++) | |
| 1066 { | |
| 1067 /* How paranoid do I have to be about no trailing NULLs, and | |
| 1068 using (int)info_ptr->text[i].text_length, and strncpy and a temp | |
| 1069 string somewhere? */ | |
| 3734 | 1070 eireset(key); |
| 1071 eireset(text); | |
| 1072 eicpy_ext(key, info_ptr->text[i].key, Qbinary); | |
| 1073 eicpy_ext(text, info_ptr->text[i].text, Qbinary); | |
| 428 | 1074 |
| 1075 warn_when_safe (Qpng, Qinfo, "%s - %s", | |
| 3734 | 1076 eidata(key), eidata(text)); |
| 428 | 1077 } |
| 1078 } | |
| 1079 | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4953
diff
changeset
|
1080 xfree (row_pointers); |
| 428 | 1081 } |
| 1082 | |
| 1083 /* now instantiate */ | |
| 442 | 1084 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain), |
| 428 | 1085 init_image_instance_from_eimage, |
| 1086 (ii, width, height, 1, unwind.eimage, dest_mask, | |
| 2959 | 1087 instantiator, pointer_fg, pointer_bg, domain)); |
| 428 | 1088 |
| 1089 /* This will clean up everything else. */ | |
| 771 | 1090 unbind_to (speccount); |
| 428 | 1091 } |
| 1092 | |
| 1093 #endif /* HAVE_PNG */ | |
| 1094 | |
| 1095 | |
| 1096 #ifdef HAVE_TIFF | |
| 1097 #include "tiffio.h" | |
| 1098 | |
| 1099 /********************************************************************** | |
| 1100 * TIFF * | |
| 1101 **********************************************************************/ | |
| 1102 static void | |
| 1103 tiff_validate (Lisp_Object instantiator) | |
| 1104 { | |
| 1105 file_or_data_must_be_present (instantiator); | |
| 1106 } | |
| 1107 | |
| 1108 static Lisp_Object | |
| 442 | 1109 tiff_normalize (Lisp_Object inst, Lisp_Object console_type, |
| 2286 | 1110 Lisp_Object UNUSED (dest_mask)) |
| 428 | 1111 { |
| 1112 return simple_image_type_normalize (inst, console_type, Qtiff); | |
| 1113 } | |
| 1114 | |
| 1115 static int | |
| 1116 tiff_possible_dest_types (void) | |
| 1117 { | |
| 1118 return IMAGE_COLOR_PIXMAP_MASK; | |
| 1119 } | |
| 1120 | |
| 1121 struct tiff_unwind_data | |
| 1122 { | |
| 2367 | 1123 Binbyte *eimage; |
| 428 | 1124 /* Object that holds the decoded data from a TIFF file */ |
| 1125 TIFF *tiff; | |
| 1126 }; | |
| 1127 | |
| 1128 static Lisp_Object | |
| 1129 tiff_instantiate_unwind (Lisp_Object unwind_obj) | |
| 1130 { | |
| 1131 struct tiff_unwind_data *data = | |
| 1132 (struct tiff_unwind_data *) get_opaque_ptr (unwind_obj); | |
| 1133 | |
| 1134 free_opaque_ptr (unwind_obj); | |
| 1135 if (data->tiff) | |
| 1136 { | |
| 1137 TIFFClose(data->tiff); | |
| 1138 } | |
| 1139 if (data->eimage) | |
|
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1140 xfree (data->eimage); |
| 428 | 1141 |
| 1142 return Qnil; | |
| 1143 } | |
| 1144 | |
| 1145 typedef struct tiff_memory_storage | |
| 1146 { | |
| 2367 | 1147 Binbyte *bytes; /* The data */ |
| 665 | 1148 Bytecount len; /* How big is it? */ |
| 1149 Bytecount index; /* Where are we? */ | |
| 428 | 1150 } tiff_memory_storage; |
| 1151 | |
| 1152 static size_t | |
| 647 | 1153 tiff_memory_read (thandle_t data, tdata_t buf, tsize_t size) |
| 428 | 1154 { |
| 647 | 1155 tiff_memory_storage *mem = (tiff_memory_storage *) data; |
| 428 | 1156 |
| 665 | 1157 if ((Bytecount) size > (mem->len - mem->index)) |
| 428 | 1158 return (size_t) -1; |
| 647 | 1159 memcpy (buf, mem->bytes + mem->index, size); |
| 428 | 1160 mem->index = mem->index + size; |
| 1161 return size; | |
| 1162 } | |
| 1163 | |
| 647 | 1164 static size_t |
| 2286 | 1165 tiff_memory_write (thandle_t UNUSED (data), tdata_t UNUSED (buf), |
| 1166 tsize_t UNUSED (size)) | |
| 428 | 1167 { |
| 2500 | 1168 ABORT(); |
| 2270 | 1169 return 0; |
| 428 | 1170 } |
| 1171 | |
| 647 | 1172 static toff_t |
| 1173 tiff_memory_seek (thandle_t data, toff_t off, int whence) | |
| 428 | 1174 { |
| 647 | 1175 tiff_memory_storage *mem = (tiff_memory_storage *) data; |
| 428 | 1176 int newidx; |
| 647 | 1177 switch(whence) |
| 1178 { | |
| 1179 case SEEK_SET: | |
| 1180 newidx = off; | |
| 1181 break; | |
| 1182 case SEEK_END: | |
| 1183 newidx = mem->len + off; | |
| 1184 break; | |
| 1185 case SEEK_CUR: | |
| 1186 newidx = mem->index + off; | |
| 1187 break; | |
| 1188 default: | |
| 1189 fprintf (stderr, "Eh? invalid seek mode in tiff_memory_seek\n"); | |
| 1190 return (toff_t) -1; | |
| 1191 } | |
| 428 | 1192 |
| 1193 if ((newidx > mem->len) || (newidx < 0)) | |
| 593 | 1194 return (toff_t) -1; |
| 428 | 1195 |
| 1196 mem->index = newidx; | |
| 1197 return newidx; | |
| 1198 } | |
| 1199 | |
| 1200 static int | |
| 2286 | 1201 tiff_memory_close (thandle_t UNUSED (data)) |
| 428 | 1202 { |
| 1203 return 0; | |
| 1204 } | |
| 1205 | |
| 1206 static int | |
| 2286 | 1207 tiff_map_noop (thandle_t UNUSED (data), tdata_t* UNUSED (pbase), |
| 1208 toff_t* UNUSED (psize)) | |
| 428 | 1209 { |
| 1210 return 0; | |
| 1211 } | |
| 1212 | |
| 1213 static void | |
| 2286 | 1214 tiff_unmap_noop (thandle_t UNUSED (data), tdata_t UNUSED (pbase), |
| 1215 toff_t UNUSED (psize)) | |
| 428 | 1216 { |
| 1217 return; | |
| 1218 } | |
| 1219 | |
| 1220 static toff_t | |
| 647 | 1221 tiff_memory_size (thandle_t data) |
| 428 | 1222 { |
| 1223 tiff_memory_storage *mem = (tiff_memory_storage*)data; | |
| 1224 return mem->len; | |
| 1225 } | |
| 1226 | |
| 1227 struct tiff_error_struct | |
| 1228 { | |
| 438 | 1229 #ifdef HAVE_VSNPRINTF |
| 428 | 1230 char err_str[256]; |
| 1231 #else | |
| 1232 char err_str[1024]; /* return the error string */ | |
| 1233 #endif | |
| 1234 jmp_buf setjmp_buffer; /* for return to caller */ | |
| 1235 }; | |
| 1236 | |
| 1237 /* jh 98/03/12 - ###This struct for passing data to the error functions | |
| 1238 is an ugly hack caused by the fact that libtiff (as of v3.4) doesn't | |
| 1239 have any place to store error func data. This should be rectified | |
| 1240 before XEmacs gets threads! */ | |
| 1241 static struct tiff_error_struct tiff_err_data; | |
| 1242 | |
| 1243 static void | |
| 2286 | 1244 tiff_error_func (const char *UNUSED (module), const char *fmt, ...) |
| 428 | 1245 { |
| 1246 va_list vargs; | |
| 1247 | |
| 1248 va_start (vargs, fmt); | |
| 438 | 1249 #ifdef HAVE_VSNPRINTF |
| 428 | 1250 vsnprintf (tiff_err_data.err_str, 255, fmt, vargs); |
| 1251 #else | |
| 1252 /* pray this doesn't overflow... */ | |
| 1253 vsprintf (tiff_err_data.err_str, fmt, vargs); | |
| 1254 #endif | |
| 1255 va_end (vargs); | |
| 1256 /* return to setjmp point */ | |
| 1257 longjmp (tiff_err_data.setjmp_buffer, 1); | |
| 1258 } | |
| 1259 | |
| 1260 static void | |
| 647 | 1261 tiff_warning_func (const char *module, const char *fmt, ...) |
| 428 | 1262 { |
| 1263 va_list vargs; | |
| 438 | 1264 #ifdef HAVE_VSNPRINTF |
| 428 | 1265 char warn_str[256]; |
| 1266 #else | |
| 1267 char warn_str[1024]; | |
| 1268 #endif | |
| 3734 | 1269 DECLARE_EISTRING (eimodule); |
| 1270 DECLARE_EISTRING (eiwarnstr); | |
| 428 | 1271 |
| 1272 va_start (vargs, fmt); | |
| 438 | 1273 #ifdef HAVE_VSNPRINTF |
| 428 | 1274 vsnprintf (warn_str, 255, fmt, vargs); |
| 1275 #else | |
| 1276 vsprintf (warn_str, fmt, vargs); | |
| 1277 #endif | |
| 1278 va_end (vargs); | |
| 3734 | 1279 |
| 1280 eicpy_ext(eimodule, module, Qbinary); | |
| 1281 eicpy_ext(eiwarnstr, warn_str, Qbinary); | |
| 1282 | |
| 428 | 1283 warn_when_safe (Qtiff, Qinfo, "%s - %s", |
| 3734 | 1284 eidata(eimodule), |
| 1285 eidata(eiwarnstr)); | |
| 428 | 1286 } |
| 1287 | |
| 1288 static void | |
| 1289 tiff_instantiate (Lisp_Object image_instance, Lisp_Object instantiator, | |
| 2959 | 1290 Lisp_Object pointer_fg, Lisp_Object pointer_bg, |
| 428 | 1291 int dest_mask, Lisp_Object domain) |
| 1292 { | |
| 440 | 1293 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (image_instance); |
| 428 | 1294 tiff_memory_storage mem_struct; |
| 1295 /* It is OK for the unwind data to be local to this function, | |
| 1296 because the unwind-protect is always executed when this | |
| 1297 stack frame is still valid. */ | |
| 1298 struct tiff_unwind_data unwind; | |
| 1299 int speccount = specpdl_depth (); | |
| 1300 uint32 width, height; | |
| 1301 | |
| 1302 xzero (unwind); | |
| 1303 record_unwind_protect (tiff_instantiate_unwind, make_opaque_ptr (&unwind)); | |
| 1304 | |
| 1305 /* set up error facilities */ | |
| 1306 if (setjmp (tiff_err_data.setjmp_buffer)) | |
| 1307 { | |
| 1308 /* An error was signaled. No clean up is needed, as unwind handles that | |
| 1309 for us. Just pass the error along. */ | |
| 1310 signal_image_error_2 ("TIFF decoding error", | |
|
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1311 build_extstring (tiff_err_data.err_str, |
|
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1312 Qerror_message_encoding), |
| 428 | 1313 instantiator); |
| 1314 } | |
| 1315 TIFFSetErrorHandler ((TIFFErrorHandler)tiff_error_func); | |
| 1316 TIFFSetWarningHandler ((TIFFErrorHandler)tiff_warning_func); | |
| 1317 { | |
| 1318 Lisp_Object data = find_keyword_in_vector (instantiator, Q_data); | |
| 2367 | 1319 Binbyte *bytes; |
| 665 | 1320 Bytecount len; |
| 428 | 1321 |
| 1322 uint32 *raster; | |
| 2367 | 1323 Binbyte *ep; |
|
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1324 UINT_64_BIT pixels_sq; |
| 428 | 1325 |
| 1326 assert (!NILP (data)); | |
| 1327 | |
| 1328 /* #### This is a definite problem under Mule due to the amount of | |
| 1329 stack data it might allocate. Think about Lstreams... */ | |
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1330 LISP_STRING_TO_SIZED_EXTERNAL (data, bytes, len, Qbinary); |
| 428 | 1331 mem_struct.bytes = bytes; |
| 1332 mem_struct.len = len; | |
| 1333 mem_struct.index = 0; | |
| 1334 | |
| 442 | 1335 unwind.tiff = TIFFClientOpen ("memfile", "r", (thandle_t) &mem_struct, |
| 428 | 1336 (TIFFReadWriteProc)tiff_memory_read, |
| 1337 (TIFFReadWriteProc)tiff_memory_write, | |
| 1338 tiff_memory_seek, tiff_memory_close, tiff_memory_size, | |
| 1339 tiff_map_noop, tiff_unmap_noop); | |
| 1340 if (!unwind.tiff) | |
| 440 | 1341 signal_image_error ("Insufficient memory to instantiate TIFF image", instantiator); |
| 428 | 1342 |
| 1343 TIFFGetField (unwind.tiff, TIFFTAG_IMAGEWIDTH, &width); | |
| 1344 TIFFGetField (unwind.tiff, TIFFTAG_IMAGELENGTH, &height); | |
|
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1345 pixels_sq = (UINT_64_BIT) width * (UINT_64_BIT) height; |
|
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|
1346 if (pixels_sq >= 1 << 29) |
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1347 signal_image_error ("TIFF image too large to instantiate", instantiator); |
|
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1348 unwind.eimage = xnew_binbytes ((size_t) pixels_sq * 3); |
| 428 | 1349 |
| 440 | 1350 /* #### This is little more than proof-of-concept/function testing. |
| 428 | 1351 It needs to be reimplemented via scanline reads for both memory |
| 1352 compactness. */ | |
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1353 raster = (uint32*) _TIFFmalloc ((tsize_t) (pixels_sq * sizeof (uint32))); |
| 428 | 1354 if (raster != NULL) |
| 1355 { | |
| 647 | 1356 int i, j; |
| 428 | 1357 uint32 *rp; |
| 1358 ep = unwind.eimage; | |
| 1359 rp = raster; | |
| 1360 if (TIFFReadRGBAImage (unwind.tiff, width, height, raster, 0)) | |
| 1361 { | |
| 1362 for (i = height - 1; i >= 0; i--) | |
| 1363 { | |
| 1364 /* This is to get around weirdness in the libtiff library where properly | |
| 1365 made TIFFs will come out upside down. libtiff bug or jhod-brainlock? */ | |
| 1366 rp = raster + (i * width); | |
| 647 | 1367 for (j = 0; j < (int) width; j++) |
| 428 | 1368 { |
| 2367 | 1369 *ep++ = (Binbyte)TIFFGetR(*rp); |
| 1370 *ep++ = (Binbyte)TIFFGetG(*rp); | |
| 1371 *ep++ = (Binbyte)TIFFGetB(*rp); | |
| 428 | 1372 rp++; |
| 1373 } | |
| 1374 } | |
| 1375 } | |
| 1376 _TIFFfree (raster); | |
| 1377 } else | |
| 1378 signal_image_error ("Unable to allocate memory for TIFFReadRGBA", instantiator); | |
| 1379 | |
| 1380 } | |
| 1381 | |
| 1382 /* now instantiate */ | |
| 442 | 1383 MAYBE_DEVMETH (DOMAIN_XDEVICE (ii->domain), |
| 428 | 1384 init_image_instance_from_eimage, |
| 1385 (ii, width, height, 1, unwind.eimage, dest_mask, | |
| 2959 | 1386 instantiator, pointer_fg, pointer_bg, domain)); |
| 428 | 1387 |
| 771 | 1388 unbind_to (speccount); |
| 428 | 1389 } |
| 1390 | |
| 1391 #endif /* HAVE_TIFF */ | |
| 1392 | |
| 1393 | |
| 1394 /************************************************************************/ | |
| 1395 /* initialization */ | |
| 1396 /************************************************************************/ | |
| 1397 | |
| 1398 void | |
| 1399 syms_of_glyphs_eimage (void) | |
| 1400 { | |
| 1401 } | |
| 1402 | |
| 1403 void | |
| 1404 image_instantiator_format_create_glyphs_eimage (void) | |
| 1405 { | |
| 1406 /* image-instantiator types */ | |
| 1407 #ifdef HAVE_JPEG | |
| 1408 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (jpeg, "jpeg"); | |
| 1409 | |
| 1410 IIFORMAT_HAS_METHOD (jpeg, validate); | |
| 1411 IIFORMAT_HAS_METHOD (jpeg, normalize); | |
| 1412 IIFORMAT_HAS_METHOD (jpeg, possible_dest_types); | |
| 1413 IIFORMAT_HAS_METHOD (jpeg, instantiate); | |
| 1414 | |
| 1415 IIFORMAT_VALID_KEYWORD (jpeg, Q_data, check_valid_string); | |
| 1416 IIFORMAT_VALID_KEYWORD (jpeg, Q_file, check_valid_string); | |
| 1417 #endif | |
| 1418 | |
| 1419 #ifdef HAVE_GIF | |
| 1420 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (gif, "gif"); | |
| 1421 | |
| 1422 IIFORMAT_HAS_METHOD (gif, validate); | |
| 1423 IIFORMAT_HAS_METHOD (gif, normalize); | |
| 1424 IIFORMAT_HAS_METHOD (gif, possible_dest_types); | |
| 1425 IIFORMAT_HAS_METHOD (gif, instantiate); | |
| 1426 | |
| 1427 IIFORMAT_VALID_KEYWORD (gif, Q_data, check_valid_string); | |
| 1428 IIFORMAT_VALID_KEYWORD (gif, Q_file, check_valid_string); | |
| 1429 #endif | |
| 1430 | |
| 1431 #ifdef HAVE_PNG | |
| 1432 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (png, "png"); | |
| 1433 | |
| 1434 IIFORMAT_HAS_METHOD (png, validate); | |
| 1435 IIFORMAT_HAS_METHOD (png, normalize); | |
| 1436 IIFORMAT_HAS_METHOD (png, possible_dest_types); | |
| 1437 IIFORMAT_HAS_METHOD (png, instantiate); | |
| 1438 | |
| 1439 IIFORMAT_VALID_KEYWORD (png, Q_data, check_valid_string); | |
| 1440 IIFORMAT_VALID_KEYWORD (png, Q_file, check_valid_string); | |
| 1441 #endif | |
| 1442 | |
| 1443 #ifdef HAVE_TIFF | |
| 1444 INITIALIZE_IMAGE_INSTANTIATOR_FORMAT (tiff, "tiff"); | |
| 1445 | |
| 1446 IIFORMAT_HAS_METHOD (tiff, validate); | |
| 1447 IIFORMAT_HAS_METHOD (tiff, normalize); | |
| 1448 IIFORMAT_HAS_METHOD (tiff, possible_dest_types); | |
| 1449 IIFORMAT_HAS_METHOD (tiff, instantiate); | |
| 1450 | |
| 1451 IIFORMAT_VALID_KEYWORD (tiff, Q_data, check_valid_string); | |
| 1452 IIFORMAT_VALID_KEYWORD (tiff, Q_file, check_valid_string); | |
| 1453 #endif | |
| 1454 | |
| 1455 } | |
| 1456 | |
| 1457 void | |
| 1458 vars_of_glyphs_eimage (void) | |
| 1459 { | |
| 1460 #ifdef HAVE_JPEG | |
| 1461 Fprovide (Qjpeg); | |
| 1462 #endif | |
| 1463 | |
| 1464 #ifdef HAVE_GIF | |
| 1465 Fprovide (Qgif); | |
| 1466 #endif | |
| 1467 | |
| 1468 #ifdef HAVE_PNG | |
| 1469 Fprovide (Qpng); | |
| 1470 #endif | |
| 1471 | |
| 1472 #ifdef HAVE_TIFF | |
| 1473 Fprovide (Qtiff); | |
| 1474 #endif | |
| 1475 | |
| 1476 } |