| File: | image/xcb_image.c |
| Location: | line 591, column 16 |
| Description: | The left operand of '&' is a garbage value |
| 1 | /* Copyright © 2007 Bart Massey | |||
| 2 | * | |||
| 3 | * Permission is hereby granted, free of charge, to any person obtaining a | |||
| 4 | * copy of this software and associated documentation files (the "Software"), | |||
| 5 | * to deal in the Software without restriction, including without limitation | |||
| 6 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |||
| 7 | * and/or sell copies of the Software, and to permit persons to whom the | |||
| 8 | * Software is furnished to do so, subject to the following conditions: | |||
| 9 | * | |||
| 10 | * The above copyright notice and this permission notice shall be included in | |||
| 11 | * all copies or substantial portions of the Software. | |||
| 12 | * | |||
| 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||
| 14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||
| 15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||
| 16 | * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |||
| 17 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |||
| 18 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||
| 19 | * | |||
| 20 | * Except as contained in this notice, the names of the authors or their | |||
| 21 | * institutions shall not be used in advertising or otherwise to promote the | |||
| 22 | * sale, use or other dealings in this Software without prior written | |||
| 23 | * authorization from the authors. | |||
| 24 | */ | |||
| 25 | ||||
| 26 | #ifdef HAVE_CONFIG_H1 | |||
| 27 | #include "config.h" | |||
| 28 | #endif | |||
| 29 | ||||
| 30 | #include <stdlib.h> | |||
| 31 | #include <stdio.h> | |||
| 32 | #include <string.h> | |||
| 33 | ||||
| 34 | #include <xcb/xcb.h> | |||
| 35 | #include <xcb/shm.h> | |||
| 36 | #include <xcb/xcb_aux.h> | |||
| 37 | #include "xcb_bitops.h" | |||
| 38 | #include "xcb_image.h" | |||
| 39 | #define BUILD | |||
| 40 | #include "xcb_pixel.h" | |||
| 41 | ||||
| 42 | ||||
| 43 | static xcb_format_t * | |||
| 44 | find_format_by_depth (const xcb_setup_t *setup, uint8_t depth) | |||
| 45 | { | |||
| 46 | xcb_format_t *fmt = xcb_setup_pixmap_formats(setup); | |||
| 47 | xcb_format_t *fmtend = fmt + xcb_setup_pixmap_formats_length(setup); | |||
| 48 | for(; fmt != fmtend; ++fmt) | |||
| 49 | if(fmt->depth == depth) | |||
| 50 | return fmt; | |||
| 51 | return 0; | |||
| 52 | } | |||
| 53 | ||||
| 54 | ||||
| 55 | static xcb_image_format_t | |||
| 56 | effective_format(xcb_image_format_t format, uint8_t bpp) | |||
| 57 | { | |||
| 58 | if (format == XCB_IMAGE_FORMAT_Z_PIXMAP && bpp != 1) | |||
| 59 | return format; | |||
| 60 | return XCB_IMAGE_FORMAT_XY_PIXMAP; | |||
| 61 | } | |||
| 62 | ||||
| 63 | ||||
| 64 | static int | |||
| 65 | format_valid (uint8_t depth, uint8_t bpp, uint8_t unit, | |||
| 66 | xcb_image_format_t format, uint8_t xpad) | |||
| 67 | { | |||
| 68 | xcb_image_format_t ef = effective_format(format, bpp); | |||
| 69 | if (depth > bpp) | |||
| 70 | return 0; | |||
| 71 | switch(ef) { | |||
| 72 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 73 | switch(unit) { | |||
| 74 | case 8: | |||
| 75 | case 16: | |||
| 76 | case 32: | |||
| 77 | break; | |||
| 78 | default: | |||
| 79 | return 0; | |||
| 80 | } | |||
| 81 | if (xpad < bpp) | |||
| 82 | return 0; | |||
| 83 | switch (xpad) { | |||
| 84 | case 8: | |||
| 85 | case 16: | |||
| 86 | case 32: | |||
| 87 | break; | |||
| 88 | default: | |||
| 89 | return 0; | |||
| 90 | } | |||
| 91 | break; | |||
| 92 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 93 | switch (bpp) { | |||
| 94 | case 4: | |||
| 95 | if (unit != 8) | |||
| 96 | return 0; | |||
| 97 | break; | |||
| 98 | case 8: | |||
| 99 | case 16: | |||
| 100 | case 24: | |||
| 101 | case 32: | |||
| 102 | if (unit != bpp) | |||
| 103 | return 0; | |||
| 104 | break; | |||
| 105 | default: | |||
| 106 | return 0; | |||
| 107 | } | |||
| 108 | break; | |||
| 109 | default: | |||
| 110 | return 0; | |||
| 111 | } | |||
| 112 | return 1; | |||
| 113 | } | |||
| 114 | ||||
| 115 | ||||
| 116 | static int | |||
| 117 | image_format_valid (xcb_image_t *image) { | |||
| 118 | return format_valid(image->depth, | |||
| 119 | image->bpp, | |||
| 120 | image->unit, | |||
| 121 | image->format, | |||
| 122 | image->scanline_pad); | |||
| 123 | } | |||
| 124 | ||||
| 125 | ||||
| 126 | void | |||
| 127 | xcb_image_annotate (xcb_image_t *image) | |||
| 128 | { | |||
| 129 | xcb_image_format_t ef = effective_format(image->format, image->bpp); | |||
| 130 | switch (ef) { | |||
| 131 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 132 | image->stride = xcb_roundup(image->width, image->scanline_pad) >> 3; | |||
| 133 | image->size = image->height * image->stride * image->depth; | |||
| 134 | break; | |||
| 135 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 136 | image->stride = xcb_roundup((uint32_t)image->width * | |||
| 137 | (uint32_t)image->bpp, | |||
| 138 | image->scanline_pad) >> 3; | |||
| 139 | image->size = image->height * image->stride; | |||
| 140 | break; | |||
| 141 | default: | |||
| 142 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 142, "0") : (void)0); | |||
| 143 | } | |||
| 144 | } | |||
| 145 | ||||
| 146 | ||||
| 147 | xcb_image_t * | |||
| 148 | xcb_image_create_native (xcb_connection_t * c, | |||
| 149 | uint16_t width, | |||
| 150 | uint16_t height, | |||
| 151 | xcb_image_format_t format, | |||
| 152 | uint8_t depth, | |||
| 153 | void * base, | |||
| 154 | uint32_t bytes, | |||
| 155 | uint8_t * data) | |||
| 156 | { | |||
| 157 | const xcb_setup_t * setup = xcb_get_setup(c); | |||
| 158 | xcb_format_t * fmt; | |||
| 159 | xcb_image_format_t ef = format; | |||
| 160 | ||||
| 161 | if (ef == XCB_IMAGE_FORMAT_Z_PIXMAP && depth == 1) | |||
| 162 | ef = XCB_IMAGE_FORMAT_XY_PIXMAP; | |||
| 163 | switch (ef) { | |||
| 164 | case XCB_IMAGE_FORMAT_XY_BITMAP: | |||
| 165 | if (depth != 1) | |||
| 166 | return 0; | |||
| 167 | /* fall through */ | |||
| 168 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 169 | if (depth > 1) { | |||
| 170 | fmt = find_format_by_depth(setup, depth); | |||
| 171 | if (!fmt) | |||
| 172 | return 0; | |||
| 173 | } | |||
| 174 | return xcb_image_create(width, height, format, | |||
| 175 | setup->bitmap_format_scanline_pad, | |||
| 176 | depth, depth, setup->bitmap_format_scanline_unit, | |||
| 177 | setup->image_byte_order, | |||
| 178 | setup->bitmap_format_bit_order, | |||
| 179 | base, bytes, data); | |||
| 180 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 181 | fmt = find_format_by_depth(setup, depth); | |||
| 182 | if (!fmt) | |||
| 183 | return 0; | |||
| 184 | return xcb_image_create(width, height, format, | |||
| 185 | fmt->scanline_pad, | |||
| 186 | fmt->depth, fmt->bits_per_pixel, 0, | |||
| 187 | setup->image_byte_order, | |||
| 188 | XCB_IMAGE_ORDER_MSB_FIRST, | |||
| 189 | base, bytes, data); | |||
| 190 | default: | |||
| 191 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 191, "0") : (void)0); | |||
| 192 | } | |||
| 193 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 193, "0") : (void)0); | |||
| 194 | return NULL((void *)0); | |||
| 195 | } | |||
| 196 | ||||
| 197 | ||||
| 198 | xcb_image_t * | |||
| 199 | xcb_image_create (uint16_t width, | |||
| 200 | uint16_t height, | |||
| 201 | xcb_image_format_t format, | |||
| 202 | uint8_t xpad, | |||
| 203 | uint8_t depth, | |||
| 204 | uint8_t bpp, | |||
| 205 | uint8_t unit, | |||
| 206 | xcb_image_order_t byte_order, | |||
| 207 | xcb_image_order_t bit_order, | |||
| 208 | void * base, | |||
| 209 | uint32_t bytes, | |||
| 210 | uint8_t * data) | |||
| 211 | { | |||
| 212 | xcb_image_t * image; | |||
| 213 | ||||
| 214 | if (unit == 0) { | |||
| 215 | switch (format) { | |||
| 216 | case XCB_IMAGE_FORMAT_XY_BITMAP: | |||
| 217 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 218 | unit = 32; | |||
| 219 | break; | |||
| 220 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 221 | if (bpp == 1) { | |||
| 222 | unit = 32; | |||
| 223 | break; | |||
| 224 | } | |||
| 225 | if (bpp < 8) { | |||
| 226 | unit = 8; | |||
| 227 | break; | |||
| 228 | } | |||
| 229 | unit = bpp; | |||
| 230 | break; | |||
| 231 | } | |||
| 232 | } | |||
| 233 | if (!format_valid(depth, bpp, unit, format, xpad)) | |||
| 234 | return 0; | |||
| 235 | image = malloc(sizeof(*image)); | |||
| 236 | if (image == 0) | |||
| 237 | return 0; | |||
| 238 | image->width = width; | |||
| 239 | image->height = height; | |||
| 240 | image->format = format; | |||
| 241 | image->scanline_pad = xpad; | |||
| 242 | image->depth = depth; | |||
| 243 | image->bpp = bpp; | |||
| 244 | image->unit = unit; | |||
| 245 | image->plane_mask = xcb_mask(depth); | |||
| 246 | image->byte_order = byte_order; | |||
| 247 | image->bit_order = bit_order; | |||
| 248 | xcb_image_annotate(image); | |||
| 249 | ||||
| 250 | /* | |||
| 251 | * Ways this function can be called: | |||
| 252 | * * with data: we fail if bytes isn't | |||
| 253 | * large enough, else leave well enough alone. | |||
| 254 | * * with base and !data: if bytes is zero, we | |||
| 255 | * default; otherwise we fail if bytes isn't | |||
| 256 | * large enough, else fill in data | |||
| 257 | * * with !base and !data: we malloc storage | |||
| 258 | * for the data, save that address as the base, | |||
| 259 | * and fail if malloc does. | |||
| 260 | * | |||
| 261 | * When successful, we establish the invariant that data | |||
| 262 | * points at sufficient storage that may have been | |||
| 263 | * supplied, and base is set iff it should be | |||
| 264 | * auto-freed when the image is destroyed. | |||
| 265 | * | |||
| 266 | * Except as a special case when base = 0 && data == 0 && | |||
| 267 | * bytes == ~0 we just return the image structure and let | |||
| 268 | * the caller deal with getting the allocation right. | |||
| 269 | */ | |||
| 270 | if (!base && !data && bytes == ~0) { | |||
| 271 | image->base = 0; | |||
| 272 | image->data = 0; | |||
| 273 | return image; | |||
| 274 | } | |||
| 275 | if (!base && data && bytes == 0) | |||
| 276 | bytes = image->size; | |||
| 277 | image->base = base; | |||
| 278 | image->data = data; | |||
| 279 | if (!image->data) { | |||
| 280 | if (image->base) { | |||
| 281 | image->data = image->base; | |||
| 282 | } else { | |||
| 283 | bytes = image->size; | |||
| 284 | image->base = malloc(bytes); | |||
| 285 | image->data = image->base; | |||
| 286 | } | |||
| 287 | } | |||
| 288 | if (!image->data || bytes < image->size) { | |||
| 289 | free(image); | |||
| 290 | return 0; | |||
| 291 | } | |||
| 292 | return image; | |||
| 293 | } | |||
| 294 | ||||
| 295 | ||||
| 296 | void | |||
| 297 | xcb_image_destroy (xcb_image_t *image) | |||
| 298 | { | |||
| 299 | if (image->base) | |||
| 300 | free (image->base); | |||
| 301 | free (image); | |||
| 302 | } | |||
| 303 | ||||
| 304 | ||||
| 305 | xcb_image_t * | |||
| 306 | xcb_image_get (xcb_connection_t * conn, | |||
| 307 | xcb_drawable_t draw, | |||
| 308 | int16_t x, | |||
| 309 | int16_t y, | |||
| 310 | uint16_t width, | |||
| 311 | uint16_t height, | |||
| 312 | uint32_t plane_mask, | |||
| 313 | xcb_image_format_t format) | |||
| 314 | { | |||
| 315 | xcb_get_image_cookie_t image_cookie; | |||
| 316 | xcb_get_image_reply_t * imrep; | |||
| 317 | xcb_image_t * image = 0; | |||
| 318 | uint32_t bytes; | |||
| 319 | uint8_t * data; | |||
| 320 | ||||
| 321 | image_cookie = xcb_get_image(conn, format, draw, x, y, | |||
| 322 | width, height, plane_mask); | |||
| 323 | imrep = xcb_get_image_reply(conn, image_cookie, 0); | |||
| 324 | if (!imrep) | |||
| 325 | return 0; | |||
| 326 | bytes = xcb_get_image_data_length(imrep); | |||
| 327 | data = xcb_get_image_data(imrep); | |||
| 328 | switch (format) { | |||
| 329 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 330 | plane_mask &= xcb_mask(imrep->depth); | |||
| 331 | if (plane_mask != xcb_mask(imrep->depth)) { | |||
| 332 | int i; | |||
| 333 | uint32_t rpm = plane_mask; | |||
| 334 | uint32_t size; | |||
| 335 | uint8_t *src_plane = data; | |||
| 336 | uint8_t *dst_plane; | |||
| 337 | ||||
| 338 | image = xcb_image_create_native(conn, width, height, format, | |||
| 339 | imrep->depth, 0, 0, 0); | |||
| 340 | if (!image) { | |||
| 341 | free(imrep); | |||
| 342 | return 0; | |||
| 343 | } | |||
| 344 | image->plane_mask = plane_mask; | |||
| 345 | size = image->height * image->stride; | |||
| 346 | dst_plane = image->data; | |||
| 347 | for (i = imrep->depth - 1; i >= 0; --i) { | |||
| 348 | if (rpm & (1 << i)) { | |||
| 349 | memcpy(dst_plane, src_plane, size)__builtin___memcpy_chk (dst_plane, src_plane, size, __builtin_object_size (dst_plane, 0)); | |||
| 350 | src_plane += size; | |||
| 351 | } else { | |||
| 352 | memset(dst_plane, 0, size)__builtin___memset_chk (dst_plane, 0, size, __builtin_object_size (dst_plane, 0)); | |||
| 353 | } | |||
| 354 | dst_plane += size; | |||
| 355 | } | |||
| 356 | free(imrep); | |||
| 357 | break; | |||
| 358 | } | |||
| 359 | /* fall through */ | |||
| 360 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 361 | image = xcb_image_create_native(conn, width, height, format, | |||
| 362 | imrep->depth, imrep, bytes, data); | |||
| 363 | if (!image) { | |||
| 364 | free(imrep); | |||
| 365 | return 0; | |||
| 366 | } | |||
| 367 | assert(bytes == image->size)(__builtin_expect(!(bytes == image->size), 0) ? __assert_rtn (__func__, "xcb_image.c", 367, "bytes == image->size") : ( void)0); | |||
| 368 | break; | |||
| 369 | default: | |||
| 370 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 370, "0") : (void)0); | |||
| 371 | } | |||
| 372 | return image; | |||
| 373 | } | |||
| 374 | ||||
| 375 | ||||
| 376 | xcb_image_t * | |||
| 377 | xcb_image_native (xcb_connection_t * c, | |||
| 378 | xcb_image_t * image, | |||
| 379 | int convert) | |||
| 380 | { | |||
| 381 | xcb_image_t * tmp_image = 0; | |||
| 382 | const xcb_setup_t * setup = xcb_get_setup(c); | |||
| 383 | xcb_format_t * fmt = 0; | |||
| 384 | xcb_image_format_t ef = effective_format(image->format, image->bpp); | |||
| 385 | uint8_t bpp = 1; | |||
| 386 | ||||
| 387 | if (image->depth > 1 || ef == XCB_IMAGE_FORMAT_Z_PIXMAP) { | |||
| 388 | fmt = find_format_by_depth(setup, image->depth); | |||
| 389 | /* XXX For now, we don't do depth conversions, even | |||
| 390 | for xy-pixmaps */ | |||
| 391 | if (!fmt) | |||
| 392 | return 0; | |||
| 393 | bpp = fmt->bits_per_pixel; | |||
| 394 | } | |||
| 395 | switch (ef) { | |||
| 396 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 397 | if (setup->bitmap_format_scanline_unit != image->unit || | |||
| 398 | setup->bitmap_format_scanline_pad != image->scanline_pad || | |||
| 399 | setup->image_byte_order != image->byte_order || | |||
| 400 | setup->bitmap_format_bit_order != image->bit_order || | |||
| 401 | bpp != image->bpp) { | |||
| 402 | if (!convert) | |||
| 403 | return 0; | |||
| 404 | tmp_image = | |||
| 405 | xcb_image_create(image->width, image->height, image->format, | |||
| 406 | setup->bitmap_format_scanline_pad, | |||
| 407 | image->depth, bpp, | |||
| 408 | setup->bitmap_format_scanline_unit, | |||
| 409 | setup->image_byte_order, | |||
| 410 | setup->bitmap_format_bit_order, | |||
| 411 | 0, 0, 0); | |||
| 412 | if (!tmp_image) | |||
| 413 | return 0; | |||
| 414 | } | |||
| 415 | break; | |||
| 416 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 417 | if (fmt->scanline_pad != image->scanline_pad || | |||
| 418 | setup->image_byte_order != image->byte_order || | |||
| 419 | bpp != image->bpp) { | |||
| 420 | if (!convert) | |||
| 421 | return 0; | |||
| 422 | tmp_image = | |||
| 423 | xcb_image_create(image->width, image->height, image->format, | |||
| 424 | fmt->scanline_pad, | |||
| 425 | image->depth, bpp, 0, | |||
| 426 | setup->image_byte_order, | |||
| 427 | XCB_IMAGE_ORDER_MSB_FIRST, | |||
| 428 | 0, 0, 0); | |||
| 429 | if (!tmp_image) | |||
| 430 | return 0; | |||
| 431 | } | |||
| 432 | break; | |||
| 433 | default: | |||
| 434 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 434, "0") : (void)0); | |||
| 435 | } | |||
| 436 | if (tmp_image) { | |||
| 437 | if (!xcb_image_convert(image, tmp_image)) { | |||
| 438 | xcb_image_destroy(tmp_image); | |||
| 439 | return 0; | |||
| 440 | } | |||
| 441 | image = tmp_image; | |||
| 442 | } | |||
| 443 | return image; | |||
| 444 | } | |||
| 445 | ||||
| 446 | ||||
| 447 | xcb_void_cookie_t | |||
| 448 | xcb_image_put (xcb_connection_t * conn, | |||
| 449 | xcb_drawable_t draw, | |||
| 450 | xcb_gcontext_t gc, | |||
| 451 | xcb_image_t * image, | |||
| 452 | int16_t x, | |||
| 453 | int16_t y, | |||
| 454 | uint8_t left_pad) | |||
| 455 | { | |||
| 456 | return xcb_put_image(conn, image->format, draw, gc, | |||
| 457 | image->width, image->height, | |||
| 458 | x, y, left_pad, | |||
| 459 | image->depth, | |||
| 460 | image->size, | |||
| 461 | image->data); | |||
| 462 | } | |||
| 463 | ||||
| 464 | ||||
| 465 | ||||
| 466 | /* | |||
| 467 | * Shm stuff | |||
| 468 | */ | |||
| 469 | ||||
| 470 | xcb_image_t * | |||
| 471 | xcb_image_shm_put (xcb_connection_t * conn, | |||
| 472 | xcb_drawable_t draw, | |||
| 473 | xcb_gcontext_t gc, | |||
| 474 | xcb_image_t * image, | |||
| 475 | xcb_shm_segment_info_t shminfo, | |||
| 476 | int16_t src_x, | |||
| 477 | int16_t src_y, | |||
| 478 | int16_t dest_x, | |||
| 479 | int16_t dest_y, | |||
| 480 | uint16_t src_width, | |||
| 481 | uint16_t src_height, | |||
| 482 | uint8_t send_event) | |||
| 483 | { | |||
| 484 | if (!xcb_image_native(conn, image, 0)) | |||
| 485 | return 0; | |||
| 486 | if (!shminfo.shmaddr) | |||
| 487 | return 0; | |||
| 488 | xcb_shm_put_image(conn, draw, gc, | |||
| 489 | image->width, image->height, | |||
| 490 | src_x, src_y, src_width, src_height, | |||
| 491 | dest_x, dest_y, | |||
| 492 | image->depth, image->format, | |||
| 493 | send_event, | |||
| 494 | shminfo.shmseg, | |||
| 495 | image->data - shminfo.shmaddr); | |||
| 496 | return image; | |||
| 497 | } | |||
| 498 | ||||
| 499 | ||||
| 500 | int | |||
| 501 | xcb_image_shm_get (xcb_connection_t * conn, | |||
| 502 | xcb_drawable_t draw, | |||
| 503 | xcb_image_t * image, | |||
| 504 | xcb_shm_segment_info_t shminfo, | |||
| 505 | int16_t x, | |||
| 506 | int16_t y, | |||
| 507 | uint32_t plane_mask) | |||
| 508 | { | |||
| 509 | xcb_shm_get_image_reply_t * setup; | |||
| 510 | xcb_shm_get_image_cookie_t cookie; | |||
| 511 | xcb_generic_error_t * err = 0; | |||
| 512 | ||||
| 513 | if (!shminfo.shmaddr) | |||
| 514 | return 0; | |||
| 515 | cookie = xcb_shm_get_image(conn, draw, | |||
| 516 | x, y, | |||
| 517 | image->width, image->height, | |||
| 518 | plane_mask, | |||
| 519 | image->format, | |||
| 520 | shminfo.shmseg, | |||
| 521 | image->data - shminfo.shmaddr); | |||
| 522 | setup = xcb_shm_get_image_reply(conn, cookie, &err); | |||
| 523 | if (err) { | |||
| 524 | fprintf(stderr__stderrp, "ShmGetImageReply error %d\n", (int)err->error_code); | |||
| 525 | free(err); | |||
| 526 | return 0; | |||
| 527 | } else { | |||
| 528 | free (setup); | |||
| 529 | return 1; | |||
| 530 | } | |||
| 531 | } | |||
| 532 | ||||
| 533 | ||||
| 534 | static uint32_t | |||
| 535 | xy_image_byte (xcb_image_t *image, uint32_t x) | |||
| 536 | { | |||
| 537 | x >>= 3; | |||
| 538 | if (image->byte_order == image->bit_order) | |||
| 539 | return x; | |||
| 540 | switch (image->unit) { | |||
| 541 | default: | |||
| 542 | case 8: | |||
| 543 | return x; | |||
| 544 | case 16: | |||
| 545 | return x ^ 1; | |||
| 546 | case 32: | |||
| 547 | return x ^ 3; | |||
| 548 | } | |||
| 549 | } | |||
| 550 | ||||
| 551 | static uint32_t | |||
| 552 | xy_image_bit (xcb_image_t *image, uint32_t x) | |||
| 553 | { | |||
| 554 | x &= 7; | |||
| 555 | if (image->bit_order == XCB_IMAGE_ORDER_MSB_FIRST) | |||
| 556 | x = 7 - x; | |||
| 557 | return x; | |||
| 558 | } | |||
| 559 | ||||
| 560 | /* GetPixel/PutPixel */ | |||
| 561 | ||||
| 562 | /* XXX this is the most hideously done cut-and-paste | |||
| 563 | to below. Any bugs fixed there should be fixed here | |||
| 564 | and vice versa. */ | |||
| 565 | void | |||
| 566 | xcb_image_put_pixel (xcb_image_t *image, | |||
| 567 | uint32_t x, | |||
| 568 | uint32_t y, | |||
| 569 | uint32_t pixel) | |||
| 570 | { | |||
| 571 | uint8_t *row; | |||
| 572 | ||||
| 573 | if (x > image->width || y > image->height) | |||
| 574 | return; | |||
| 575 | row = image->data + (y * image->stride); | |||
| 576 | switch (effective_format(image->format, image->bpp)) { | |||
| 577 | case XCB_IMAGE_FORMAT_XY_BITMAP: | |||
| 578 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 579 | /* block */ { | |||
| 580 | int p; | |||
| 581 | uint32_t plane_mask = image->plane_mask; | |||
| 582 | uint8_t * plane = row; | |||
| 583 | uint32_t byte = xy_image_byte(image, x); | |||
| 584 | uint32_t bit = xy_image_bit(image,x); | |||
| 585 | uint8_t mask = 1 << bit; | |||
| 586 | ||||
| 587 | for (p = image->bpp - 1; p >= 0; p--) { | |||
| 588 | if ((plane_mask >> p) & 1) { | |||
| 589 | uint8_t * bp = plane + byte; | |||
| 590 | uint8_t this_bit = ((pixel >> p) & 1) << bit; | |||
| 591 | *bp = (*bp & ~mask) | this_bit; | |||
| ||||
| 592 | } | |||
| 593 | plane += image->stride * image->height; | |||
| 594 | } | |||
| 595 | } | |||
| 596 | break; | |||
| 597 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 598 | switch (image->bpp) { | |||
| 599 | uint32_t mask; | |||
| 600 | case 4: | |||
| 601 | mask = 0xf; | |||
| 602 | pixel &= 0xf; | |||
| 603 | if ((x & 1) == | |||
| 604 | (image->byte_order == XCB_IMAGE_ORDER_MSB_FIRST)) { | |||
| 605 | pixel <<= 4; | |||
| 606 | mask <<= 4; | |||
| 607 | } | |||
| 608 | row[x >> 1] = (row[x >> 1] & ~mask) | pixel; | |||
| 609 | break; | |||
| 610 | case 8: | |||
| 611 | row[x] = pixel; | |||
| 612 | break; | |||
| 613 | case 16: | |||
| 614 | switch (image->byte_order) { | |||
| 615 | case XCB_IMAGE_ORDER_LSB_FIRST: | |||
| 616 | row[x << 1] = pixel; | |||
| 617 | row[(x << 1) + 1] = pixel >> 8; | |||
| 618 | break; | |||
| 619 | case XCB_IMAGE_ORDER_MSB_FIRST: | |||
| 620 | row[x << 1] = pixel >> 8; | |||
| 621 | row[(x << 1) + 1] = pixel; | |||
| 622 | break; | |||
| 623 | } | |||
| 624 | break; | |||
| 625 | case 24: | |||
| 626 | switch (image->byte_order) { | |||
| 627 | case XCB_IMAGE_ORDER_LSB_FIRST: | |||
| 628 | row[x * 3] = pixel; | |||
| 629 | row[x * 3 + 1] = pixel >> 8; | |||
| 630 | row[x * 3 + 2] = pixel >> 16; | |||
| 631 | break; | |||
| 632 | case XCB_IMAGE_ORDER_MSB_FIRST: | |||
| 633 | row[x * 3] = pixel >> 16; | |||
| 634 | row[x * 3 + 1] = pixel >> 8; | |||
| 635 | row[x * 3 + 2] = pixel; | |||
| 636 | break; | |||
| 637 | } | |||
| 638 | break; | |||
| 639 | case 32: | |||
| 640 | switch (image->byte_order) { | |||
| 641 | case XCB_IMAGE_ORDER_LSB_FIRST: | |||
| 642 | row[x << 2] = pixel; | |||
| 643 | row[(x << 2) + 1] = pixel >> 8; | |||
| 644 | row[(x << 2) + 2] = pixel >> 16; | |||
| 645 | row[(x << 2) + 3] = pixel >> 24; | |||
| 646 | break; | |||
| 647 | case XCB_IMAGE_ORDER_MSB_FIRST: | |||
| 648 | row[x << 2] = pixel >> 24; | |||
| 649 | row[(x << 2) + 1] = pixel >> 16; | |||
| 650 | row[(x << 2) + 2] = pixel >> 8; | |||
| 651 | row[(x << 2) + 3] = pixel; | |||
| 652 | break; | |||
| 653 | } | |||
| 654 | break; | |||
| 655 | default: | |||
| 656 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 656, "0") : (void)0); | |||
| 657 | } | |||
| 658 | break; | |||
| 659 | default: | |||
| 660 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 660, "0") : (void)0); | |||
| 661 | } | |||
| 662 | } | |||
| 663 | ||||
| 664 | ||||
| 665 | /* XXX this is the most hideously done cut-and-paste | |||
| 666 | from above. Any bugs fixed there should be fixed here | |||
| 667 | and vice versa. */ | |||
| 668 | uint32_t | |||
| 669 | xcb_image_get_pixel (xcb_image_t *image, | |||
| 670 | uint32_t x, | |||
| 671 | uint32_t y) | |||
| 672 | { | |||
| 673 | uint32_t pixel = 0; | |||
| 674 | uint8_t *row; | |||
| 675 | ||||
| 676 | assert(x < image->width && y < image->height)(__builtin_expect(!(x < image->width && y < image ->height), 0) ? __assert_rtn(__func__, "xcb_image.c", 676, "x < image->width && y < image->height") : (void)0); | |||
| 677 | row = image->data + (y * image->stride); | |||
| 678 | switch (effective_format(image->format, image->bpp)) { | |||
| 679 | case XCB_IMAGE_FORMAT_XY_BITMAP: | |||
| 680 | case XCB_IMAGE_FORMAT_XY_PIXMAP: | |||
| 681 | /* block */ { | |||
| 682 | int p; | |||
| 683 | uint32_t plane_mask = image->plane_mask; | |||
| 684 | uint8_t * plane = row; | |||
| 685 | uint32_t byte = xy_image_byte(image, x); | |||
| 686 | uint32_t bit = xy_image_bit(image,x); | |||
| 687 | ||||
| 688 | for (p = image->bpp - 1; p >= 0; p--) { | |||
| 689 | pixel <<= 1; | |||
| 690 | if ((plane_mask >> p) & 1) { | |||
| 691 | uint8_t * bp = plane + byte; | |||
| 692 | pixel |= (*bp >> bit) & 1; | |||
| 693 | } | |||
| 694 | plane += image->stride * image->height; | |||
| 695 | } | |||
| 696 | } | |||
| 697 | return pixel; | |||
| 698 | case XCB_IMAGE_FORMAT_Z_PIXMAP: | |||
| 699 | switch (image->bpp) { | |||
| 700 | case 4: | |||
| 701 | if ((x & 1) == (image->byte_order == XCB_IMAGE_ORDER_MSB_FIRST)) | |||
| 702 | return row[x >> 1] >> 4; | |||
| 703 | return row[x >> 1] & 0xf; | |||
| 704 | case 8: | |||
| 705 | return row[x]; | |||
| 706 | case 16: | |||
| 707 | switch (image->byte_order) { | |||
| 708 | case XCB_IMAGE_ORDER_LSB_FIRST: | |||
| 709 | pixel = row[x << 1]; | |||
| 710 | pixel |= row[(x << 1) + 1] << 8; | |||
| 711 | break; | |||
| 712 | case XCB_IMAGE_ORDER_MSB_FIRST: | |||
| 713 | pixel = row[x << 1] << 8; | |||
| 714 | pixel |= row[(x << 1) + 1]; | |||
| 715 | break; | |||
| 716 | } | |||
| 717 | break; | |||
| 718 | case 24: | |||
| 719 | switch (image->byte_order) { | |||
| 720 | case XCB_IMAGE_ORDER_LSB_FIRST: | |||
| 721 | pixel = row[x * 3]; | |||
| 722 | pixel |= row[x * 3 + 1] << 8; | |||
| 723 | pixel |= row[x * 3 + 2] << 16; | |||
| 724 | break; | |||
| 725 | case XCB_IMAGE_ORDER_MSB_FIRST: | |||
| 726 | pixel = row[x * 3] << 16; | |||
| 727 | pixel |= row[x * 3 + 1] << 8; | |||
| 728 | pixel |= row[x * 3 + 2]; | |||
| 729 | break; | |||
| 730 | } | |||
| 731 | break; | |||
| 732 | case 32: | |||
| 733 | switch (image->byte_order) { | |||
| 734 | case XCB_IMAGE_ORDER_LSB_FIRST: | |||
| 735 | pixel = row[x << 2]; | |||
| 736 | pixel |= row[(x << 2) + 1] << 8; | |||
| 737 | pixel |= row[(x << 2) + 2] << 16; | |||
| 738 | pixel |= row[(x << 2) + 3] << 24; | |||
| 739 | break; | |||
| 740 | case XCB_IMAGE_ORDER_MSB_FIRST: | |||
| 741 | pixel = row[x << 2] << 24; | |||
| 742 | pixel |= row[(x << 2) + 1] << 16; | |||
| 743 | pixel |= row[(x << 2) + 2] << 8; | |||
| 744 | pixel |= row[(x << 2) + 3]; | |||
| 745 | break; | |||
| 746 | } | |||
| 747 | break; | |||
| 748 | default: | |||
| 749 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 749, "0") : (void)0); | |||
| 750 | } | |||
| 751 | return pixel; | |||
| 752 | default: | |||
| 753 | assert(0)(__builtin_expect(!(0), 0) ? __assert_rtn(__func__, "xcb_image.c" , 753, "0") : (void)0); | |||
| 754 | } | |||
| 755 | return 0; | |||
| 756 | } | |||
| 757 | ||||
| 758 | ||||
| 759 | xcb_image_t * | |||
| 760 | xcb_image_create_from_bitmap_data (uint8_t * data, | |||
| 761 | uint32_t width, | |||
| 762 | uint32_t height) | |||
| 763 | { | |||
| 764 | return xcb_image_create(width, height, XCB_IMAGE_FORMAT_XY_PIXMAP, | |||
| 765 | 8, 1, 1, 8, | |||
| 766 | XCB_IMAGE_ORDER_LSB_FIRST, | |||
| 767 | XCB_IMAGE_ORDER_LSB_FIRST, | |||
| 768 | 0, 0, data); | |||
| 769 | } | |||
| 770 | ||||
| 771 | ||||
| 772 | /* | |||
| 773 | * (Adapted from libX11.) | |||
| 774 | * | |||
| 775 | * xcb_create_pixmap_from_bitmap_data: Routine to make a pixmap of | |||
| 776 | * given depth from user supplied bitmap data. | |||
| 777 | * D is any drawable on the same screen that the pixmap will be used in. | |||
| 778 | * Data is a pointer to the bit data, and | |||
| 779 | * width & height give the size in bits of the pixmap. | |||
| 780 | * | |||
| 781 | * The following format is assumed for data: | |||
| 782 | * | |||
| 783 | * format=XY (will use XYPixmap for depth 1 and XYBitmap for larger) | |||
| 784 | * bit_order=LSBFirst | |||
| 785 | * padding=8 | |||
| 786 | * bitmap_unit=8 | |||
| 787 | */ | |||
| 788 | xcb_pixmap_t | |||
| 789 | xcb_create_pixmap_from_bitmap_data (xcb_connection_t * display, | |||
| 790 | xcb_drawable_t d, | |||
| 791 | uint8_t * data, | |||
| 792 | uint32_t width, | |||
| 793 | uint32_t height, | |||
| 794 | uint32_t depth, | |||
| 795 | uint32_t fg, | |||
| 796 | uint32_t bg, | |||
| 797 | xcb_gcontext_t * gcp) | |||
| 798 | { | |||
| 799 | xcb_pixmap_t pix; | |||
| 800 | xcb_image_t * image; | |||
| 801 | xcb_image_t * final_image; | |||
| 802 | xcb_gcontext_t gc; | |||
| 803 | uint32_t mask = 0; | |||
| 804 | xcb_params_gc_t gcv; | |||
| 805 | ||||
| 806 | image = xcb_image_create_from_bitmap_data(data, width, height); | |||
| 807 | if (!image) | |||
| 808 | return 0; | |||
| 809 | if (depth > 1) | |||
| 810 | image->format = XCB_IMAGE_FORMAT_XY_BITMAP; | |||
| 811 | final_image = xcb_image_native(display, image, 1); | |||
| 812 | if (!final_image) { | |||
| 813 | xcb_image_destroy(image); | |||
| 814 | return 0; | |||
| 815 | } | |||
| 816 | pix = xcb_generate_id(display); | |||
| 817 | xcb_create_pixmap(display, depth, pix, d, width, height); | |||
| 818 | gc = xcb_generate_id(display); | |||
| 819 | XCB_AUX_ADD_PARAM(&mask, &gcv, foreground, fg)((*(&mask)|=1<<((uint32_t const*)(&(((&gcv) )->foreground))-(uint32_t const*)((&gcv)))), ((&gcv )->foreground=(fg))); | |||
| 820 | XCB_AUX_ADD_PARAM(&mask, &gcv, background, bg)((*(&mask)|=1<<((uint32_t const*)(&(((&gcv) )->background))-(uint32_t const*)((&gcv)))), ((&gcv )->background=(bg))); | |||
| 821 | xcb_aux_create_gc(display, gc, pix, mask, &gcv); | |||
| 822 | xcb_image_put(display, pix, gc, final_image, 0, 0, 0); | |||
| 823 | if (final_image != image) | |||
| 824 | xcb_image_destroy(final_image); | |||
| 825 | xcb_image_destroy(image); | |||
| 826 | if (gcp) | |||
| 827 | *gcp = gc; | |||
| 828 | else | |||
| 829 | xcb_free_gc(display, gc); | |||
| 830 | return pix; | |||
| 831 | } | |||
| 832 | ||||
| 833 | ||||
| 834 | /* Thanks to Keith Packard <keithp@keithp.com> for this code */ | |||
| 835 | static void | |||
| 836 | swap_image(uint8_t * src, | |||
| 837 | uint32_t src_stride, | |||
| 838 | uint8_t * dst, | |||
| 839 | uint32_t dst_stride, | |||
| 840 | uint32_t height, | |||
| 841 | uint32_t byteswap, | |||
| 842 | int bitswap, | |||
| 843 | int nibbleswap) | |||
| 844 | { | |||
| 845 | while (height--) { | |||
| 846 | uint32_t s; | |||
| 847 | ||||
| 848 | for (s = 0; s < src_stride; s++) { | |||
| 849 | uint8_t b; | |||
| 850 | uint32_t d = s ^ byteswap; | |||
| 851 | ||||
| 852 | if (d > dst_stride) | |||
| 853 | continue; | |||
| 854 | ||||
| 855 | b = src[s]; | |||
| 856 | if (bitswap) | |||
| 857 | b = xcb_bit_reverse(b, 8); | |||
| 858 | if (nibbleswap) | |||
| 859 | b = (b << 4) | (b >> 4); | |||
| 860 | dst[d] = b; | |||
| 861 | } | |||
| 862 | src += src_stride; | |||
| 863 | dst += dst_stride; | |||
| 864 | } | |||
| 865 | } | |||
| 866 | ||||
| 867 | /* Which order are bytes in (low two bits), given | |||
| 868 | * code which accesses an image one byte at a time | |||
| 869 | */ | |||
| 870 | static uint32_t | |||
| 871 | byte_order(xcb_image_t *i) | |||
| 872 | { | |||
| 873 | uint32_t flip = i->byte_order == XCB_IMAGE_ORDER_MSB_FIRST; | |||
| 874 | ||||
| 875 | switch (i->bpp) { | |||
| 876 | default: | |||
| 877 | case 8: | |||
| 878 | return 0; | |||
| 879 | case 16: | |||
| 880 | return flip; | |||
| 881 | case 32: | |||
| 882 | return flip | (flip << 1); | |||
| 883 | } | |||
| 884 | } | |||
| 885 | ||||
| 886 | static uint32_t | |||
| 887 | bit_order(xcb_image_t *i) | |||
| 888 | { | |||
| 889 | uint32_t flip = i->byte_order != i->bit_order; | |||
| 890 | ||||
| 891 | switch (i->unit) { | |||
| 892 | default: | |||
| 893 | case 8: | |||
| 894 | return 0; | |||
| 895 | case 16: | |||
| 896 | return flip; | |||
| 897 | case 32: | |||
| 898 | return flip | (flip << 1); | |||
| 899 | } | |||
| 900 | } | |||
| 901 | ||||
| 902 | /* Convert from one byte order to another by flipping the | |||
| 903 | * low two bits of the byte index along a scanline | |||
| 904 | */ | |||
| 905 | static uint32_t | |||
| 906 | conversion_byte_swap(xcb_image_t *src, xcb_image_t *dst) | |||
| 907 | { | |||
| 908 | xcb_image_format_t ef = effective_format(src->format, src->bpp); | |||
| 909 | ||||
| 910 | /* src_ef == dst_ef in all callers of this function */ | |||
| 911 | if (ef == XCB_IMAGE_FORMAT_XY_PIXMAP) { | |||
| 912 | return bit_order(src) ^ bit_order(dst); | |||
| 913 | } else { | |||
| 914 | /* src_bpp == dst_bpp in all callers of this function */ | |||
| 915 | return byte_order(src) ^ byte_order(dst); | |||
| 916 | } | |||
| 917 | } | |||
| 918 | ||||
| 919 | xcb_image_t * | |||
| 920 | xcb_image_convert (xcb_image_t * src, | |||
| 921 | xcb_image_t * dst) | |||
| 922 | { | |||
| 923 | xcb_image_format_t ef = effective_format(src->format, src->bpp); | |||
| 924 | ||||
| 925 | /* Things will go horribly wrong here if a bad | |||
| 926 | image is passed in, so we check some things | |||
| 927 | up front just to be nice. */ | |||
| 928 | assert(image_format_valid(src))(__builtin_expect(!(image_format_valid(src)), 0) ? __assert_rtn (__func__, "xcb_image.c", 928, "image_format_valid(src)") : ( void)0); | |||
| 929 | assert(image_format_valid(dst))(__builtin_expect(!(image_format_valid(dst)), 0) ? __assert_rtn (__func__, "xcb_image.c", 929, "image_format_valid(dst)") : ( void)0); | |||
| 930 | ||||
| 931 | /* images must be the same size | |||
| 932 | * (yes, we could copy a sub-set) | |||
| 933 | */ | |||
| 934 | if (src->width != dst->width || | |||
| 935 | src->height != dst->height) | |||
| 936 | return 0; | |||
| 937 | ||||
| 938 | if (ef == effective_format(dst->format, dst->bpp) && | |||
| 939 | src->bpp == dst->bpp) | |||
| 940 | { | |||
| 941 | if (src->unit == dst->unit && | |||
| 942 | src->scanline_pad == dst->scanline_pad && | |||
| 943 | src->byte_order == dst->byte_order && | |||
| 944 | (ef == XCB_IMAGE_FORMAT_Z_PIXMAP || | |||
| 945 | src->bit_order == dst->bit_order)) { | |||
| 946 | memcpy(dst->data, src->data, src->size)__builtin___memcpy_chk (dst->data, src->data, src->size , __builtin_object_size (dst->data, 0)); | |||
| 947 | } else { | |||
| 948 | int bitswap = 0; | |||
| 949 | int nibbleswap = 0; | |||
| 950 | uint32_t byteswap = conversion_byte_swap(src, dst); | |||
| 951 | uint32_t height = src->height;; | |||
| 952 | ||||
| 953 | if (ef == XCB_IMAGE_FORMAT_Z_PIXMAP) { | |||
| 954 | if (src->bpp == 4 && src->byte_order != dst->byte_order) | |||
| 955 | nibbleswap = 1; | |||
| 956 | } else { | |||
| 957 | if (src->bit_order != dst->bit_order) | |||
| 958 | bitswap = 1; | |||
| 959 | height *= src->depth; | |||
| 960 | } | |||
| 961 | swap_image (src->data, src->stride, dst->data, dst->stride, | |||
| 962 | height, byteswap, bitswap, nibbleswap); | |||
| 963 | } | |||
| 964 | } | |||
| 965 | else | |||
| 966 | { | |||
| 967 | uint32_t x; | |||
| 968 | uint32_t y; | |||
| 969 | /* General case: Slow pixel copy. Should we optimize | |||
| 970 | Z24<->Z32 copies of either endianness? */ | |||
| 971 | for (y = 0; y < src->height; y++) { | |||
| 972 | for (x = 0; x < src->width; x++) { | |||
| 973 | uint32_t pixel = xcb_image_get_pixel(src, x, y); | |||
| 974 | xcb_image_put_pixel(dst, x, y, pixel); | |||
| 975 | } | |||
| 976 | } | |||
| 977 | } | |||
| 978 | return dst; | |||
| 979 | } | |||
| 980 | ||||
| 981 | xcb_image_t * | |||
| 982 | xcb_image_subimage(xcb_image_t * image, | |||
| 983 | uint32_t x, | |||
| 984 | uint32_t y, | |||
| 985 | uint32_t width, | |||
| 986 | uint32_t height, | |||
| 987 | void * base, | |||
| 988 | uint32_t bytes, | |||
| 989 | uint8_t * data) | |||
| 990 | { | |||
| 991 | int i, j; | |||
| 992 | xcb_image_t * result; | |||
| 993 | ||||
| 994 | if (x + width > image->width) | |||
| ||||
| 995 | return 0; | |||
| 996 | if (y + height > image->height) | |||
| 997 | return 0; | |||
| 998 | result = xcb_image_create(width, height, image->format, | |||
| 999 | image->scanline_pad, image->depth, | |||
| 1000 | image->bpp, image->unit, image->byte_order, | |||
| 1001 | image->bit_order, | |||
| 1002 | base, bytes, data); | |||
| 1003 | if (!result) | |||
| 1004 | return 0; | |||
| 1005 | /* XXX FIXME For now, lose on performance. Sorry. */ | |||
| 1006 | for (j = 0; j < height; j++) { | |||
| 1007 | for (i = 0; i < width; i++) { | |||
| 1008 | uint32_t pixel = xcb_image_get_pixel(image, x + i, y + j); | |||
| 1009 | xcb_image_put_pixel(result, i, j, pixel); | |||
| 1010 | } | |||
| 1011 | } | |||
| 1012 | return result; | |||
| 1013 | } |