pixman/pixman-image.c

   1 /*
   2  * Copyright © 2000 SuSE, Inc.
   3  * Copyright © 2007 Red Hat, Inc.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and its
   6  * documentation for any purpose is hereby granted without fee, provided that
   7  * the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name of SuSE not be used in advertising or
  10  * publicity pertaining to distribution of the software without specific,
  11  * written prior permission.  SuSE makes no representations about the
  12  * suitability of this software for any purpose.  It is provided "as is"
  13  * without express or implied warranty.
  14  *
  15  * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
  17  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  18  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  19  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  20  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <assert.h>
  31
  32 #include "pixman-private.h"
  33 #include "pixman-combine32.h"
  34
  35 pixman_bool_t
  36 _pixman_init_gradient (gradient_t *                  gradient,
  37                        const pixman_gradient_stop_t *stops,
  38                        int                           n_stops)
  39 {
  40     return_val_if_fail (n_stops > 0, FALSE);
  41
  42     gradient->stops = pixman_malloc_ab (n_stops, sizeof (pixman_gradient_stop_t));
  43     if (!gradient->stops)
  44         return FALSE;
  45
  46     memcpy (gradient->stops, stops, n_stops * sizeof (pixman_gradient_stop_t));
  47
  48     gradient->n_stops = n_stops;
  49
  50     gradient->stop_range = 0xffff;
  51
  52     return TRUE;
  53 }
  54
  55 /*
  56  * By default, just evaluate the image at 32bpp and expand.  Individual image
  57  * types can plug in a better scanline getter if they want to. For example
  58  * we  could produce smoother gradients by evaluating them at higher color
  59  * depth, but that's a project for the future.
  60  */
  61 void
  62 _pixman_image_get_scanline_generic_64 (pixman_image_t * image,
  63                                        int              x,
  64                                        int              y,
  65                                        int              width,
  66                                        uint32_t *       buffer,
  67                                        const uint32_t * mask)
  68 {
  69     uint32_t *mask8 = NULL;
  70
  71     /* Contract the mask image, if one exists, so that the 32-bit fetch
  72      * function can use it.
  73      */
  74     if (mask)
  75     {
  76         mask8 = pixman_malloc_ab (width, sizeof(uint32_t));
  77         if (!mask8)
  78             return;
  79
  80         pixman_contract (mask8, (uint64_t *)mask, width);
  81     }
  82
  83     /* Fetch the source image into the first half of buffer. */
  84     _pixman_image_get_scanline_32 (image, x, y, width, (uint32_t*)buffer, mask8);
  85
  86     /* Expand from 32bpp to 64bpp in place. */
  87     pixman_expand ((uint64_t *)buffer, buffer, PIXMAN_a8r8g8b8, width);
  88
  89     free (mask8);
  90 }
  91
  92 pixman_image_t *
  93 _pixman_image_allocate (void)
  94 {
  95     pixman_image_t *image = malloc (sizeof (pixman_image_t));
  96
  97     if (image)
  98     {
  99         image_common_t *common = &image->common;
 100
 101         pixman_region32_init (&common->clip_region);
 102
 103         common->alpha_count = 0;
 104         common->have_clip_region = FALSE;
 105         common->clip_sources = FALSE;
 106         common->transform = NULL;
 107         common->repeat = PIXMAN_REPEAT_NONE;
 108         common->filter = PIXMAN_FILTER_NEAREST;
 109         common->filter_params = NULL;
 110         common->n_filter_params = 0;
 111         common->alpha_map = NULL;
 112         common->component_alpha = FALSE;
 113         common->ref_count = 1;
 114         common->classify = NULL;
 115         common->client_clip = FALSE;
 116         common->destroy_func = NULL;
 117         common->destroy_data = NULL;
 118         common->dirty = TRUE;
 119     }
 120
 121     return image;
 122 }
 123
 124 source_image_class_t
 125 _pixman_image_classify (pixman_image_t *image,
 126                         int             x,
 127                         int             y,
 128                         int             width,
 129                         int             height)
 130 {
 131     if (image->common.classify)
 132         return image->common.classify (image, x, y, width, height);
 133     else
 134         return SOURCE_IMAGE_CLASS_UNKNOWN;
 135 }
 136
 137 void
 138 _pixman_image_get_scanline_32 (pixman_image_t *image,
 139                                int             x,
 140                                int             y,
 141                                int             width,
 142                                uint32_t *      buffer,
 143                                const uint32_t *mask)
 144 {
 145     image->common.get_scanline_32 (image, x, y, width, buffer, mask);
 146 }
 147
 148 /* Even thought the type of buffer is uint32_t *, the function actually expects
 149  * a uint64_t *buffer.
 150  */
 151 void
 152 _pixman_image_get_scanline_64 (pixman_image_t *image,
 153                                int             x,
 154                                int             y,
 155                                int             width,
 156                                uint32_t *      buffer,
 157                                const uint32_t *unused)
 158 {
 159     image->common.get_scanline_64 (image, x, y, width, buffer, unused);
 160 }
 161
 162 static void
 163 image_property_changed (pixman_image_t *image)
 164 {
 165     image->common.dirty = TRUE;
 166 }
 167
 168 /* Ref Counting */
 169 PIXMAN_EXPORT pixman_image_t *
 170 pixman_image_ref (pixman_image_t *image)
 171 {
 172     image->common.ref_count++;
 173
 174     return image;
 175 }
 176
 177 /* returns TRUE when the image is freed */
 178 PIXMAN_EXPORT pixman_bool_t
 179 pixman_image_unref (pixman_image_t *image)
 180 {
 181     image_common_t *common = (image_common_t *)image;
 182
 183     common->ref_count--;
 184
 185     if (common->ref_count == 0)
 186     {
 187         if (image->common.destroy_func)
 188             image->common.destroy_func (image, image->common.destroy_data);
 189
 190         pixman_region32_fini (&common->clip_region);
 191
 192         if (common->transform)
 193             free (common->transform);
 194
 195         if (common->filter_params)
 196             free (common->filter_params);
 197
 198         if (common->alpha_map)
 199             pixman_image_unref ((pixman_image_t *)common->alpha_map);
 200
 201         if (image->type == LINEAR ||
 202             image->type == RADIAL ||
 203             image->type == CONICAL)
 204         {
 205             if (image->gradient.stops)
 206                 free (image->gradient.stops);
 207         }
 208
 209         if (image->type == BITS && image->bits.free_me)
 210             free (image->bits.free_me);
 211
 212         free (image);
 213
 214         return TRUE;
 215     }
 216
 217     return FALSE;
 218 }
 219
 220 PIXMAN_EXPORT void
 221 pixman_image_set_destroy_function (pixman_image_t *            image,
 222                                    pixman_image_destroy_func_t func,
 223                                    void *                      data)
 224 {
 225     image->common.destroy_func = func;
 226     image->common.destroy_data = data;
 227 }
 228
 229 PIXMAN_EXPORT void *
 230 pixman_image_get_destroy_data (pixman_image_t *image)
 231 {
 232   return image->common.destroy_data;
 233 }
 234
 235 void
 236 _pixman_image_reset_clip_region (pixman_image_t *image)
 237 {
 238     image->common.have_clip_region = FALSE;
 239 }
 240
 241 /* Executive Summary: This function is a no-op that only exists
 242  * for historical reasons.
 243  *
 244  * There used to be a bug in the X server where it would rely on
 245  * out-of-bounds accesses when it was asked to composite with a
 246  * window as the source. It would create a pixman image pointing
 247  * to some bogus position in memory, but then set a clip region
 248  * to the position where the actual bits were.
 249  *
 250  * Due to a bug in old versions of pixman, where it would not clip
 251  * against the image bounds when a clip region was set, this would
 252  * actually work. So when the pixman bug was fixed, a workaround was
 253  * added to allow certain out-of-bound accesses. This function disabled
 254  * those workarounds.
 255  *
 256  * Since 0.21.2, pixman doesn't do these workarounds anymore, so now
 257  * this function is a no-op.
 258  */
 259 PIXMAN_EXPORT void
 260 pixman_disable_out_of_bounds_workaround (void)
 261 {
 262 }
 263
 264 static void
 265 compute_image_info (pixman_image_t *image)
 266 {
 267     pixman_format_code_t code;
 268     uint32_t flags = 0;
 269
 270     /* Transform */
 271     if (!image->common.transform)
 272     {
 273         flags |= (FAST_PATH_ID_TRANSFORM        |
 274                   FAST_PATH_X_UNIT_POSITIVE     |
 275                   FAST_PATH_Y_UNIT_ZERO         |
 276                   FAST_PATH_AFFINE_TRANSFORM);
 277     }
 278     else
 279     {
 280         flags |= FAST_PATH_HAS_TRANSFORM;
 281
 282         if (image->common.transform->matrix[2][0] == 0                  &&
 283             image->common.transform->matrix[2][1] == 0                  &&
 284             image->common.transform->matrix[2][2] == pixman_fixed_1)
 285         {
 286             flags |= FAST_PATH_AFFINE_TRANSFORM;
 287
 288             if (image->common.transform->matrix[0][1] == 0 &&
 289                 image->common.transform->matrix[1][0] == 0)
 290             {
 291                 flags |= FAST_PATH_SCALE_TRANSFORM;
 292             }
 293         }
 294
 295         if (image->common.transform->matrix[0][0] > 0)
 296             flags |= FAST_PATH_X_UNIT_POSITIVE;
 297
 298         if (image->common.transform->matrix[1][0] == 0)
 299             flags |= FAST_PATH_Y_UNIT_ZERO;
 300     }
 301
 302     /* Filter */
 303     switch (image->common.filter)
 304     {
 305     case PIXMAN_FILTER_NEAREST:
 306     case PIXMAN_FILTER_FAST:
 307         flags |= (FAST_PATH_NEAREST_FILTER | FAST_PATH_NO_CONVOLUTION_FILTER);
 308         break;
 309
 310     case PIXMAN_FILTER_BILINEAR:
 311     case PIXMAN_FILTER_GOOD:
 312     case PIXMAN_FILTER_BEST:
 313         flags |= (FAST_PATH_BILINEAR_FILTER | FAST_PATH_NO_CONVOLUTION_FILTER);
 314         break;
 315
 316     case PIXMAN_FILTER_CONVOLUTION:
 317         break;
 318
 319     default:
 320         flags |= FAST_PATH_NO_CONVOLUTION_FILTER;
 321         break;
 322     }
 323
 324     /* Repeat mode */
 325     switch (image->common.repeat)
 326     {
 327     case PIXMAN_REPEAT_NONE:
 328         flags |=
 329             FAST_PATH_NO_REFLECT_REPEAT         |
 330             FAST_PATH_NO_PAD_REPEAT             |
 331             FAST_PATH_NO_NORMAL_REPEAT;
 332         break;
 333
 334     case PIXMAN_REPEAT_REFLECT:
 335         flags |=
 336             FAST_PATH_NO_PAD_REPEAT             |
 337             FAST_PATH_NO_NONE_REPEAT            |
 338             FAST_PATH_NO_NORMAL_REPEAT;
 339         break;
 340
 341     case PIXMAN_REPEAT_PAD:
 342         flags |=
 343             FAST_PATH_NO_REFLECT_REPEAT         |
 344             FAST_PATH_NO_NONE_REPEAT            |
 345             FAST_PATH_NO_NORMAL_REPEAT;
 346         break;
 347
 348     default:
 349         flags |=
 350             FAST_PATH_NO_REFLECT_REPEAT         |
 351             FAST_PATH_NO_PAD_REPEAT             |
 352             FAST_PATH_NO_NONE_REPEAT;
 353         break;
 354     }
 355
 356     /* Component alpha */
 357     if (image->common.component_alpha)
 358         flags |= FAST_PATH_COMPONENT_ALPHA;
 359     else
 360         flags |= FAST_PATH_UNIFIED_ALPHA;
 361
 362     flags |= (FAST_PATH_NO_ACCESSORS | FAST_PATH_NARROW_FORMAT);
 363
 364     /* Type specific checks */
 365     switch (image->type)
 366     {
 367     case SOLID:
 368         code = PIXMAN_solid;
 369
 370         if (image->solid.color.alpha == 0xffff)
 371             flags |= FAST_PATH_IS_OPAQUE;
 372         break;
 373
 374     case BITS:
 375         if (image->bits.width == 1      &&
 376             image->bits.height == 1     &&
 377             image->common.repeat != PIXMAN_REPEAT_NONE)
 378         {
 379             code = PIXMAN_solid;
 380         }
 381         else
 382         {
 383             code = image->bits.format;
 384         }
 385
 386         if (!PIXMAN_FORMAT_A (image->bits.format)                               &&
 387             PIXMAN_FORMAT_TYPE (image->bits.format) != PIXMAN_TYPE_GRAY         &&
 388             PIXMAN_FORMAT_TYPE (image->bits.format) != PIXMAN_TYPE_COLOR)
 389         {
 390             flags |= FAST_PATH_SAMPLES_OPAQUE;
 391
 392             if (image->common.repeat != PIXMAN_REPEAT_NONE)
 393                 flags |= FAST_PATH_IS_OPAQUE;
 394         }
 395
 396         if (image->bits.read_func || image->bits.write_func)
 397             flags &= ~FAST_PATH_NO_ACCESSORS;
 398
 399         if (PIXMAN_FORMAT_IS_WIDE (image->bits.format))
 400             flags &= ~FAST_PATH_NARROW_FORMAT;
 401         break;
 402
 403     case LINEAR:
 404     case RADIAL:
 405         code = PIXMAN_unknown;
 406
 407         if (image->common.repeat != PIXMAN_REPEAT_NONE)
 408         {
 409             int i;
 410
 411             flags |= FAST_PATH_IS_OPAQUE;
 412             for (i = 0; i < image->gradient.n_stops; ++i)
 413             {
 414                 if (image->gradient.stops[i].color.alpha != 0xffff)
 415                 {
 416                     flags &= ~FAST_PATH_IS_OPAQUE;
 417                     break;
 418                 }
 419             }
 420         }
 421         break;
 422
 423     default:
 424         code = PIXMAN_unknown;
 425         break;
 426     }
 427
 428     /* Alpha map */
 429     if (!image->common.alpha_map)
 430     {
 431         flags |= FAST_PATH_NO_ALPHA_MAP;
 432     }
 433     else
 434     {
 435         if (PIXMAN_FORMAT_IS_WIDE (image->common.alpha_map->format))
 436             flags &= ~FAST_PATH_NARROW_FORMAT;
 437     }
 438
 439     /* Both alpha maps and convolution filters can introduce
 440      * non-opaqueness in otherwise opaque images. Also
 441      * an image with component alpha turned on is only opaque
 442      * if all channels are opaque, so we simply turn it off
 443      * unconditionally for those images.
 444      */
 445     if (image->common.alpha_map                                 ||
 446         image->common.filter == PIXMAN_FILTER_CONVOLUTION       ||
 447         image->common.component_alpha)
 448     {
 449         flags &= ~(FAST_PATH_IS_OPAQUE | FAST_PATH_SAMPLES_OPAQUE);
 450     }
 451
 452     image->common.flags = flags;
 453     image->common.extended_format_code = code;
 454 }
 455
 456 void
 457 _pixman_image_validate (pixman_image_t *image)
 458 {
 459     if (image->common.dirty)
 460     {
 461         compute_image_info (image);
 462
 463         /* It is important that property_changed is
 464          * called *after* compute_image_info() because
 465          * property_changed() can make use of the flags
 466          * to set up accessors etc.
 467          */
 468         image->common.property_changed (image);
 469
 470         image->common.dirty = FALSE;
 471     }
 472
 473     if (image->common.alpha_map)
 474         _pixman_image_validate ((pixman_image_t *)image->common.alpha_map);
 475 }
 476
 477 PIXMAN_EXPORT pixman_bool_t
 478 pixman_image_set_clip_region32 (pixman_image_t *   image,
 479                                 pixman_region32_t *region)
 480 {
 481     image_common_t *common = (image_common_t *)image;
 482     pixman_bool_t result;
 483
 484     if (region)
 485     {
 486         if ((result = pixman_region32_copy (&common->clip_region, region)))
 487             image->common.have_clip_region = TRUE;
 488     }
 489     else
 490     {
 491         _pixman_image_reset_clip_region (image);
 492
 493         result = TRUE;
 494     }
 495
 496     image_property_changed (image);
 497
 498     return result;
 499 }
 500
 501 PIXMAN_EXPORT pixman_bool_t
 502 pixman_image_set_clip_region (pixman_image_t *   image,
 503                               pixman_region16_t *region)
 504 {
 505     image_common_t *common = (image_common_t *)image;
 506     pixman_bool_t result;
 507
 508     if (region)
 509     {
 510         if ((result = pixman_region32_copy_from_region16 (&common->clip_region, region)))
 511             image->common.have_clip_region = TRUE;
 512     }
 513     else
 514     {
 515         _pixman_image_reset_clip_region (image);
 516
 517         result = TRUE;
 518     }
 519
 520     image_property_changed (image);
 521
 522     return result;
 523 }
 524
 525 PIXMAN_EXPORT void
 526 pixman_image_set_has_client_clip (pixman_image_t *image,
 527                                   pixman_bool_t   client_clip)
 528 {
 529     image->common.client_clip = client_clip;
 530 }
 531
 532 PIXMAN_EXPORT pixman_bool_t
 533 pixman_image_set_transform (pixman_image_t *          image,
 534                             const pixman_transform_t *transform)
 535 {
 536     static const pixman_transform_t id =
 537     {
 538         { { pixman_fixed_1, 0, 0 },
 539           { 0, pixman_fixed_1, 0 },
 540           { 0, 0, pixman_fixed_1 } }
 541     };
 542
 543     image_common_t *common = (image_common_t *)image;
 544     pixman_bool_t result;
 545
 546     if (common->transform == transform)
 547         return TRUE;
 548
 549     if (memcmp (&id, transform, sizeof (pixman_transform_t)) == 0)
 550     {
 551         free (common->transform);
 552         common->transform = NULL;
 553         result = TRUE;
 554
 555         goto out;
 556     }
 557
 558     if (common->transform == NULL)
 559         common->transform = malloc (sizeof (pixman_transform_t));
 560
 561     if (common->transform == NULL)
 562     {
 563         result = FALSE;
 564
 565         goto out;
 566     }
 567
 568     memcpy (common->transform, transform, sizeof(pixman_transform_t));
 569
 570     result = TRUE;
 571
 572 out:
 573     image_property_changed (image);
 574
 575     return result;
 576 }
 577
 578 PIXMAN_EXPORT void
 579 pixman_image_set_repeat (pixman_image_t *image,
 580                          pixman_repeat_t repeat)
 581 {
 582     image->common.repeat = repeat;
 583
 584     image_property_changed (image);
 585 }
 586
 587 PIXMAN_EXPORT pixman_bool_t
 588 pixman_image_set_filter (pixman_image_t *      image,
 589                          pixman_filter_t       filter,
 590                          const pixman_fixed_t *params,
 591                          int                   n_params)
 592 {
 593     image_common_t *common = (image_common_t *)image;
 594     pixman_fixed_t *new_params;
 595
 596     if (params == common->filter_params && filter == common->filter)
 597         return TRUE;
 598
 599     new_params = NULL;
 600     if (params)
 601     {
 602         new_params = pixman_malloc_ab (n_params, sizeof (pixman_fixed_t));
 603         if (!new_params)
 604             return FALSE;
 605
 606         memcpy (new_params,
 607                 params, n_params * sizeof (pixman_fixed_t));
 608     }
 609
 610     common->filter = filter;
 611
 612     if (common->filter_params)
 613         free (common->filter_params);
 614
 615     common->filter_params = new_params;
 616     common->n_filter_params = n_params;
 617
 618     image_property_changed (image);
 619     return TRUE;
 620 }
 621
 622 PIXMAN_EXPORT void
 623 pixman_image_set_source_clipping (pixman_image_t *image,
 624                                   pixman_bool_t   clip_sources)
 625 {
 626     image->common.clip_sources = clip_sources;
 627
 628     image_property_changed (image);
 629 }
 630
 631 /* Unlike all the other property setters, this function does not
 632  * copy the content of indexed. Doing this copying is simply
 633  * way, way too expensive.
 634  */
 635 PIXMAN_EXPORT void
 636 pixman_image_set_indexed (pixman_image_t *        image,
 637                           const pixman_indexed_t *indexed)
 638 {
 639     bits_image_t *bits = (bits_image_t *)image;
 640
 641     bits->indexed = indexed;
 642
 643     image_property_changed (image);
 644 }
 645
 646 PIXMAN_EXPORT void
 647 pixman_image_set_alpha_map (pixman_image_t *image,
 648                             pixman_image_t *alpha_map,
 649                             int16_t         x,
 650                             int16_t         y)
 651 {
 652     image_common_t *common = (image_common_t *)image;
 653
 654     return_if_fail (!alpha_map || alpha_map->type == BITS);
 655
 656     if (alpha_map && common->alpha_count > 0)
 657     {
 658         /* If this image is being used as an alpha map itself,
 659          * then you can't give it an alpha map of its own.
 660          */
 661         return;
 662     }
 663
 664     if (alpha_map && alpha_map->common.alpha_map)
 665     {
 666         /* If the image has an alpha map of its own,
 667          * then it can't be used as an alpha map itself
 668          */
 669         return;
 670     }
 671
 672     if (common->alpha_map != (bits_image_t *)alpha_map)
 673     {
 674         if (common->alpha_map)
 675         {
 676             common->alpha_map->common.alpha_count--;
 677
 678             pixman_image_unref ((pixman_image_t *)common->alpha_map);
 679         }
 680
 681         if (alpha_map)
 682         {
 683             common->alpha_map = (bits_image_t *)pixman_image_ref (alpha_map);
 684
 685             common->alpha_map->common.alpha_count++;
 686         }
 687         else
 688         {
 689             common->alpha_map = NULL;
 690         }
 691     }
 692
 693     common->alpha_origin_x = x;
 694     common->alpha_origin_y = y;
 695
 696     image_property_changed (image);
 697 }
 698
 699 PIXMAN_EXPORT void
 700 pixman_image_set_component_alpha   (pixman_image_t *image,
 701                                     pixman_bool_t   component_alpha)
 702 {
 703     image->common.component_alpha = component_alpha;
 704
 705     image_property_changed (image);
 706 }
 707
 708 PIXMAN_EXPORT pixman_bool_t
 709 pixman_image_get_component_alpha   (pixman_image_t       *image)
 710 {
 711     return image->common.component_alpha;
 712 }
 713
 714 PIXMAN_EXPORT void
 715 pixman_image_set_accessors (pixman_image_t *           image,
 716                             pixman_read_memory_func_t  read_func,
 717                             pixman_write_memory_func_t write_func)
 718 {
 719     return_if_fail (image != NULL);
 720
 721     if (image->type == BITS)
 722     {
 723         image->bits.read_func = read_func;
 724         image->bits.write_func = write_func;
 725
 726         image_property_changed (image);
 727     }
 728 }
 729
 730 PIXMAN_EXPORT uint32_t *
 731 pixman_image_get_data (pixman_image_t *image)
 732 {
 733     if (image->type == BITS)
 734         return image->bits.bits;
 735
 736     return NULL;
 737 }
 738
 739 PIXMAN_EXPORT int
 740 pixman_image_get_width (pixman_image_t *image)
 741 {
 742     if (image->type == BITS)
 743         return image->bits.width;
 744
 745     return 0;
 746 }
 747
 748 PIXMAN_EXPORT int
 749 pixman_image_get_height (pixman_image_t *image)
 750 {
 751     if (image->type == BITS)
 752         return image->bits.height;
 753
 754     return 0;
 755 }
 756
 757 PIXMAN_EXPORT int
 758 pixman_image_get_stride (pixman_image_t *image)
 759 {
 760     if (image->type == BITS)
 761         return image->bits.rowstride * (int) sizeof (uint32_t);
 762
 763     return 0;
 764 }
 765
 766 PIXMAN_EXPORT int
 767 pixman_image_get_depth (pixman_image_t *image)
 768 {
 769     if (image->type == BITS)
 770         return PIXMAN_FORMAT_DEPTH (image->bits.format);
 771
 772     return 0;
 773 }
 774
 775 PIXMAN_EXPORT pixman_format_code_t
 776 pixman_image_get_format (pixman_image_t *image)
 777 {
 778     if (image->type == BITS)
 779         return image->bits.format;
 780
 781     return 0;
 782 }
 783
 784 uint32_t
 785 _pixman_image_get_solid (pixman_image_t *     image,
 786                          pixman_format_code_t format)
 787 {
 788     uint32_t result;
 789
 790     _pixman_image_get_scanline_32 (image, 0, 0, 1, &result, NULL);
 791
 792     /* If necessary, convert RGB <--> BGR. */
 793     if (PIXMAN_FORMAT_TYPE (format) != PIXMAN_TYPE_ARGB)
 794     {
 795         result = (((result & 0xff000000) >>  0) |
 796                   ((result & 0x00ff0000) >> 16) |
 797                   ((result & 0x0000ff00) >>  0) |
 798                   ((result & 0x000000ff) << 16));
 799     }
 800
 801     return result;
 802 }