pixman/pixman-private.h

   1 #ifndef PACKAGE
   2 #  error config.h must be included before pixman-private.h
   3 #endif
   4
   5 #ifndef PIXMAN_PRIVATE_H
   6 #define PIXMAN_PRIVATE_H
   7
   8 #define PIXMAN_DISABLE_DEPRECATED
   9 #define PIXMAN_USE_INTERNAL_API
  10
  11 #include "pixman.h"
  12 #include <time.h>
  13 #include <assert.h>
  14
  15 #include "pixman-compiler.h"
  16
  17 /*
  18  * Images
  19  */
  20 typedef struct image_common image_common_t;
  21 typedef struct source_image source_image_t;
  22 typedef struct solid_fill solid_fill_t;
  23 typedef struct gradient gradient_t;
  24 typedef struct linear_gradient linear_gradient_t;
  25 typedef struct horizontal_gradient horizontal_gradient_t;
  26 typedef struct vertical_gradient vertical_gradient_t;
  27 typedef struct conical_gradient conical_gradient_t;
  28 typedef struct radial_gradient radial_gradient_t;
  29 typedef struct bits_image bits_image_t;
  30 typedef struct circle circle_t;
  31
  32 typedef void (*fetch_scanline_t) (pixman_image_t *image,
  33                                   int             x,
  34                                   int             y,
  35                                   int             width,
  36                                   uint32_t       *buffer,
  37                                   const uint32_t *mask,
  38                                   uint32_t        mask_bits);
  39
  40 typedef uint32_t (*fetch_pixel_32_t) (bits_image_t *image,
  41                                       int           x,
  42                                       int           y);
  43
  44 typedef uint64_t (*fetch_pixel_64_t) (bits_image_t *image,
  45                                       int           x,
  46                                       int           y);
  47
  48 typedef void (*store_scanline_t) (bits_image_t *  image,
  49                                   int             x,
  50                                   int             y,
  51                                   int             width,
  52                                   const uint32_t *values);
  53
  54 typedef enum
  55 {
  56     BITS,
  57     LINEAR,
  58     CONICAL,
  59     RADIAL,
  60     SOLID
  61 } image_type_t;
  62
  63 typedef enum
  64 {
  65     SOURCE_IMAGE_CLASS_UNKNOWN,
  66     SOURCE_IMAGE_CLASS_HORIZONTAL,
  67     SOURCE_IMAGE_CLASS_VERTICAL,
  68 } source_image_class_t;
  69
  70 typedef source_image_class_t (*classify_func_t) (pixman_image_t *image,
  71                                                 int             x,
  72                                                 int             y,
  73                                                 int             width,
  74                                                 int             height);
  75 typedef void (*property_changed_func_t) (pixman_image_t *image);
  76
  77 struct image_common
  78 {
  79     image_type_t                type;
  80     int32_t                     ref_count;
  81     pixman_region32_t           clip_region;
  82     pixman_bool_t               have_clip_region;   /* FALSE if there is no clip */
  83     pixman_bool_t               client_clip;        /* Whether the source clip was
  84                                                        set by a client */
  85     pixman_bool_t               clip_sources;       /* Whether the clip applies when
  86                                                      * the image is used as a source
  87                                                      */
  88     pixman_bool_t               dirty;
  89     pixman_bool_t               need_workaround;
  90     pixman_transform_t *        transform;
  91     pixman_repeat_t             repeat;
  92     pixman_filter_t             filter;
  93     pixman_fixed_t *            filter_params;
  94     int                         n_filter_params;
  95     bits_image_t *              alpha_map;
  96     int                         alpha_origin_x;
  97     int                         alpha_origin_y;
  98     pixman_bool_t               component_alpha;
  99     classify_func_t             classify;
 100     property_changed_func_t     property_changed;
 101     fetch_scanline_t            get_scanline_32;
 102     fetch_scanline_t            get_scanline_64;
 103
 104     pixman_image_destroy_func_t destroy_func;
 105     void *                      destroy_data;
 106 };
 107
 108 struct source_image
 109 {
 110     image_common_t common;
 111     source_image_class_t class;
 112 };
 113
 114 struct solid_fill
 115 {
 116     source_image_t common;
 117     pixman_color_t color;
 118
 119     uint32_t       color_32;
 120     uint64_t       color_64;
 121 };
 122
 123 struct gradient
 124 {
 125     source_image_t          common;
 126     int                     n_stops;
 127     pixman_gradient_stop_t *stops;
 128     int                     stop_range;
 129 };
 130
 131 struct linear_gradient
 132 {
 133     gradient_t           common;
 134     pixman_point_fixed_t p1;
 135     pixman_point_fixed_t p2;
 136 };
 137
 138 struct circle
 139 {
 140     pixman_fixed_t x;
 141     pixman_fixed_t y;
 142     pixman_fixed_t radius;
 143 };
 144
 145 struct radial_gradient
 146 {
 147     gradient_t common;
 148
 149     circle_t   c1;
 150     circle_t   c2;
 151     double     cdx;
 152     double     cdy;
 153     double     dr;
 154     double     A;
 155 };
 156
 157 struct conical_gradient
 158 {
 159     gradient_t           common;
 160     pixman_point_fixed_t center;
 161     pixman_fixed_t       angle;
 162 };
 163
 164 struct bits_image
 165 {
 166     image_common_t             common;
 167     pixman_format_code_t       format;
 168     const pixman_indexed_t *   indexed;
 169     int                        width;
 170     int                        height;
 171     uint32_t *                 bits;
 172     uint32_t *                 free_me;
 173     int                        rowstride;  /* in number of uint32_t's */
 174
 175     /* Fetch a pixel, disregarding alpha maps, transformations etc. */
 176     fetch_pixel_32_t           fetch_pixel_raw_32;
 177     fetch_pixel_64_t           fetch_pixel_raw_64;
 178
 179     /* Fetch a pixel, taking alpha maps into account */
 180     fetch_pixel_32_t           fetch_pixel_32;
 181     fetch_pixel_64_t           fetch_pixel_64;
 182
 183     /* Fetch raw scanlines, with no regard for transformations, alpha maps etc. */
 184     fetch_scanline_t           fetch_scanline_raw_32;
 185     fetch_scanline_t           fetch_scanline_raw_64;
 186
 187     /* Store scanlines with no regard for alpha maps */
 188     store_scanline_t           store_scanline_raw_32;
 189     store_scanline_t           store_scanline_raw_64;
 190
 191     /* Store a scanline, taking alpha maps into account */
 192     store_scanline_t           store_scanline_32;
 193     store_scanline_t           store_scanline_64;
 194
 195     /* Used for indirect access to the bits */
 196     pixman_read_memory_func_t  read_func;
 197     pixman_write_memory_func_t write_func;
 198 };
 199
 200 union pixman_image
 201 {
 202     image_type_t       type;
 203     image_common_t     common;
 204     bits_image_t       bits;
 205     source_image_t     source;
 206     gradient_t         gradient;
 207     linear_gradient_t  linear;
 208     conical_gradient_t conical;
 209     radial_gradient_t  radial;
 210     solid_fill_t       solid;
 211 };
 212
 213
 214 void
 215 _pixman_bits_image_setup_raw_accessors (bits_image_t *image);
 216
 217 void
 218 _pixman_image_get_scanline_generic_64  (pixman_image_t *image,
 219                                         int             x,
 220                                         int             y,
 221                                         int             width,
 222                                         uint32_t *      buffer,
 223                                         const uint32_t *mask,
 224                                         uint32_t        mask_bits);
 225
 226 source_image_class_t
 227 _pixman_image_classify (pixman_image_t *image,
 228                         int             x,
 229                         int             y,
 230                         int             width,
 231                         int             height);
 232
 233 void
 234 _pixman_image_get_scanline_32 (pixman_image_t *image,
 235                                int             x,
 236                                int             y,
 237                                int             width,
 238                                uint32_t *      buffer,
 239                                const uint32_t *mask,
 240                                uint32_t        mask_bits);
 241
 242 /* Even thought the type of buffer is uint32_t *, the function actually expects
 243  * a uint64_t *buffer.
 244  */
 245 void
 246 _pixman_image_get_scanline_64 (pixman_image_t *image,
 247                                int             x,
 248                                int             y,
 249                                int             width,
 250                                uint32_t *      buffer,
 251                                const uint32_t *unused,
 252                                uint32_t        unused2);
 253
 254 void
 255 _pixman_image_store_scanline_32 (bits_image_t *  image,
 256                                  int             x,
 257                                  int             y,
 258                                  int             width,
 259                                  const uint32_t *buffer);
 260
 261 /* Even though the type of buffer is uint32_t *, the function
 262  * actually expects a uint64_t *buffer.
 263  */
 264 void
 265 _pixman_image_store_scanline_64 (bits_image_t *  image,
 266                                  int             x,
 267                                  int             y,
 268                                  int             width,
 269                                  const uint32_t *buffer);
 270
 271 pixman_image_t *
 272 _pixman_image_allocate (void);
 273
 274 pixman_bool_t
 275 _pixman_init_gradient (gradient_t *                  gradient,
 276                        const pixman_gradient_stop_t *stops,
 277                        int                           n_stops);
 278 void
 279 _pixman_image_reset_clip_region (pixman_image_t *image);
 280
 281 void
 282 _pixman_image_validate (pixman_image_t *image);
 283
 284 pixman_bool_t
 285 _pixman_image_is_opaque (pixman_image_t *image);
 286
 287 pixman_bool_t
 288 _pixman_image_is_solid (pixman_image_t *image);
 289
 290 uint32_t
 291 _pixman_image_get_solid (pixman_image_t *     image,
 292                          pixman_format_code_t format);
 293
 294 #define PIXMAN_IMAGE_GET_LINE(image, x, y, type, out_stride, line, mul) \
 295     do                                                                  \
 296     {                                                                   \
 297         uint32_t *__bits__;                                             \
 298         int       __stride__;                                           \
 299                                                                         \
 300         __bits__ = image->bits.bits;                                    \
 301         __stride__ = image->bits.rowstride;                             \
 302         (out_stride) =                                                  \
 303             __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type); \
 304         (line) =                                                        \
 305             ((type *) __bits__) + (out_stride) * (y) + (mul) * (x);     \
 306     } while (0)
 307
 308 /*
 309  * Gradient walker
 310  */
 311 typedef struct
 312 {
 313     uint32_t                left_ag;
 314     uint32_t                left_rb;
 315     uint32_t                right_ag;
 316     uint32_t                right_rb;
 317     int32_t                 left_x;
 318     int32_t                 right_x;
 319     int32_t                 stepper;
 320
 321     pixman_gradient_stop_t *stops;
 322     int                     num_stops;
 323     unsigned int            spread;
 324
 325     int                     need_reset;
 326 } pixman_gradient_walker_t;
 327
 328 void
 329 _pixman_gradient_walker_init (pixman_gradient_walker_t *walker,
 330                               gradient_t *              gradient,
 331                               unsigned int              spread);
 332
 333 void
 334 _pixman_gradient_walker_reset (pixman_gradient_walker_t *walker,
 335                                pixman_fixed_32_32_t      pos);
 336
 337 uint32_t
 338 _pixman_gradient_walker_pixel (pixman_gradient_walker_t *walker,
 339                                pixman_fixed_32_32_t      x);
 340
 341 /*
 342  * Edges
 343  */
 344
 345 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 346 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n) / 2)) - 1)
 347 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n) / 2)) + 1)
 348
 349 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC (n))
 350 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
 351
 352 #define Y_FRAC_FIRST(n) (STEP_Y_SMALL (n) / 2)
 353 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST (n) + (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
 354
 355 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC (n))
 356 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
 357
 358 #define X_FRAC_FIRST(n) (STEP_X_SMALL (n) / 2)
 359 #define X_FRAC_LAST(n)  (X_FRAC_FIRST (n) + (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
 360
 361 #define RENDER_SAMPLES_X(x, n)                                          \
 362     ((n) == 1? 0 : (pixman_fixed_frac (x) +                             \
 363                     X_FRAC_FIRST (n)) / STEP_X_SMALL (n))
 364
 365 void
 366 pixman_rasterize_edges_accessors (pixman_image_t *image,
 367                                   pixman_edge_t * l,
 368                                   pixman_edge_t * r,
 369                                   pixman_fixed_t  t,
 370                                   pixman_fixed_t  b);
 371
 372 /*
 373  * Implementations
 374  */
 375
 376 typedef struct pixman_implementation_t pixman_implementation_t;
 377
 378 typedef void (*pixman_combine_32_func_t) (pixman_implementation_t *imp,
 379                                           pixman_op_t              op,
 380                                           uint32_t *               dest,
 381                                           const uint32_t *         src,
 382                                           const uint32_t *         mask,
 383                                           int                      width);
 384
 385 typedef void (*pixman_combine_64_func_t) (pixman_implementation_t *imp,
 386                                           pixman_op_t              op,
 387                                           uint64_t *               dest,
 388                                           const uint64_t *         src,
 389                                           const uint64_t *         mask,
 390                                           int                      width);
 391
 392 typedef void (*pixman_composite_func_t) (pixman_implementation_t *imp,
 393                                          pixman_op_t              op,
 394                                          pixman_image_t *         src,
 395                                          pixman_image_t *         mask,
 396                                          pixman_image_t *         dest,
 397                                          int32_t                  src_x,
 398                                          int32_t                  src_y,
 399                                          int32_t                  mask_x,
 400                                          int32_t                  mask_y,
 401                                          int32_t                  dest_x,
 402                                          int32_t                  dest_y,
 403                                          int32_t                  width,
 404                                          int32_t                  height);
 405 typedef pixman_bool_t (*pixman_blt_func_t) (pixman_implementation_t *imp,
 406                                             uint32_t *               src_bits,
 407                                             uint32_t *               dst_bits,
 408                                             int                      src_stride,
 409                                             int                      dst_stride,
 410                                             int                      src_bpp,
 411                                             int                      dst_bpp,
 412                                             int                      src_x,
 413                                             int                      src_y,
 414                                             int                      dst_x,
 415                                             int                      dst_y,
 416                                             int                      width,
 417                                             int                      height);
 418 typedef pixman_bool_t (*pixman_fill_func_t) (pixman_implementation_t *imp,
 419                                              uint32_t *               bits,
 420                                              int                      stride,
 421                                              int                      bpp,
 422                                              int                      x,
 423                                              int                      y,
 424                                              int                      width,
 425                                              int                      height,
 426                                              uint32_t                 xor);
 427
 428 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
 429 void _pixman_setup_combiner_functions_64 (pixman_implementation_t *imp);
 430
 431 struct pixman_implementation_t
 432 {
 433     pixman_implementation_t *toplevel;
 434     pixman_implementation_t *delegate;
 435
 436     pixman_composite_func_t  composite;
 437     pixman_blt_func_t        blt;
 438     pixman_fill_func_t       fill;
 439
 440     pixman_combine_32_func_t combine_32[PIXMAN_N_OPERATORS];
 441     pixman_combine_32_func_t combine_32_ca[PIXMAN_N_OPERATORS];
 442     pixman_combine_64_func_t combine_64[PIXMAN_N_OPERATORS];
 443     pixman_combine_64_func_t combine_64_ca[PIXMAN_N_OPERATORS];
 444 };
 445
 446 pixman_implementation_t *
 447 _pixman_implementation_create (pixman_implementation_t *delegate);
 448
 449 void
 450 _pixman_implementation_combine_32 (pixman_implementation_t *imp,
 451                                    pixman_op_t              op,
 452                                    uint32_t *               dest,
 453                                    const uint32_t *         src,
 454                                    const uint32_t *         mask,
 455                                    int                      width);
 456 void
 457 _pixman_implementation_combine_64 (pixman_implementation_t *imp,
 458                                    pixman_op_t              op,
 459                                    uint64_t *               dest,
 460                                    const uint64_t *         src,
 461                                    const uint64_t *         mask,
 462                                    int                      width);
 463 void
 464 _pixman_implementation_combine_32_ca (pixman_implementation_t *imp,
 465                                       pixman_op_t              op,
 466                                       uint32_t *               dest,
 467                                       const uint32_t *         src,
 468                                       const uint32_t *         mask,
 469                                       int                      width);
 470 void
 471 _pixman_implementation_combine_64_ca (pixman_implementation_t *imp,
 472                                       pixman_op_t              op,
 473                                       uint64_t *               dest,
 474                                       const uint64_t *         src,
 475                                       const uint64_t *         mask,
 476                                       int                      width);
 477 void
 478 _pixman_implementation_composite (pixman_implementation_t *imp,
 479                                   pixman_op_t              op,
 480                                   pixman_image_t *         src,
 481                                   pixman_image_t *         mask,
 482                                   pixman_image_t *         dest,
 483                                   int32_t                  src_x,
 484                                   int32_t                  src_y,
 485                                   int32_t                  mask_x,
 486                                   int32_t                  mask_y,
 487                                   int32_t                  dest_x,
 488                                   int32_t                  dest_y,
 489                                   int32_t                  width,
 490                                   int32_t                  height);
 491
 492 pixman_bool_t
 493 _pixman_implementation_blt (pixman_implementation_t *imp,
 494                             uint32_t *               src_bits,
 495                             uint32_t *               dst_bits,
 496                             int                      src_stride,
 497                             int                      dst_stride,
 498                             int                      src_bpp,
 499                             int                      dst_bpp,
 500                             int                      src_x,
 501                             int                      src_y,
 502                             int                      dst_x,
 503                             int                      dst_y,
 504                             int                      width,
 505                             int                      height);
 506
 507 pixman_bool_t
 508 _pixman_implementation_fill (pixman_implementation_t *imp,
 509                              uint32_t *               bits,
 510                              int                      stride,
 511                              int                      bpp,
 512                              int                      x,
 513                              int                      y,
 514                              int                      width,
 515                              int                      height,
 516                              uint32_t                 xor);
 517
 518 /* Specific implementations */
 519 pixman_implementation_t *
 520 _pixman_implementation_create_general (void);
 521
 522 pixman_implementation_t *
 523 _pixman_implementation_create_fast_path (void);
 524
 525 #ifdef USE_MMX
 526 pixman_implementation_t *
 527 _pixman_implementation_create_mmx (void);
 528 #endif
 529
 530 #ifdef USE_SSE2
 531 pixman_implementation_t *
 532 _pixman_implementation_create_sse2 (void);
 533 #endif
 534
 535 #ifdef USE_ARM_SIMD
 536 pixman_implementation_t *
 537 _pixman_implementation_create_arm_simd (void);
 538 #endif
 539
 540 #ifdef USE_ARM_NEON
 541 pixman_implementation_t *
 542 _pixman_implementation_create_arm_neon (void);
 543 #endif
 544
 545 #ifdef USE_VMX
 546 pixman_implementation_t *
 547 _pixman_implementation_create_vmx (void);
 548 #endif
 549
 550 pixman_implementation_t *
 551 _pixman_choose_implementation (void);
 552
 553
 554
 555 /*
 556  * Utilities
 557  */
 558
 559 /* These "formats" all have depth 0, so they
 560  * will never clash with any real ones
 561  */
 562 #define PIXMAN_null             PIXMAN_FORMAT (0, 0, 0, 0, 0, 0)
 563 #define PIXMAN_solid            PIXMAN_FORMAT (0, 1, 0, 0, 0, 0)
 564 #define PIXMAN_a8r8g8b8_ca      PIXMAN_FORMAT (0, 2, 0, 0, 0, 0)
 565 #define PIXMAN_a8b8g8r8_ca      PIXMAN_FORMAT (0, 3, 0, 0, 0, 0)
 566 #define PIXMAN_pixbuf           PIXMAN_FORMAT (0, 4, 0, 0, 0, 0)
 567 #define PIXMAN_rpixbuf          PIXMAN_FORMAT (0, 5, 0, 0, 0, 0)
 568
 569 typedef struct
 570 {
 571     pixman_op_t             op;
 572     pixman_format_code_t    src_format;
 573     pixman_format_code_t    mask_format;
 574     pixman_format_code_t    dest_format;
 575     pixman_composite_func_t func;
 576 } pixman_fast_path_t;
 577
 578 /* Memory allocation helpers */
 579 void *
 580 pixman_malloc_ab (unsigned int n, unsigned int b);
 581
 582 void *
 583 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
 584
 585 pixman_bool_t
 586 pixman_multiply_overflows_int (unsigned int a, unsigned int b);
 587
 588 pixman_bool_t
 589 pixman_addition_overflows_int (unsigned int a, unsigned int b);
 590
 591 /* Compositing utilities */
 592 pixman_bool_t
 593 _pixman_run_fast_path (const pixman_fast_path_t *paths,
 594                        pixman_implementation_t * imp,
 595                        pixman_op_t               op,
 596                        pixman_image_t *          src,
 597                        pixman_image_t *          mask,
 598                        pixman_image_t *          dest,
 599                        int32_t                   src_x,
 600                        int32_t                   src_y,
 601                        int32_t                   mask_x,
 602                        int32_t                   mask_y,
 603                        int32_t                   dest_x,
 604                        int32_t                   dest_y,
 605                        int32_t                   width,
 606                        int32_t                   height);
 607
 608 void
 609 _pixman_walk_composite_region (pixman_implementation_t *imp,
 610                                pixman_op_t              op,
 611                                pixman_image_t *         src_image,
 612                                pixman_image_t *         mask_image,
 613                                pixman_image_t *         dst_image,
 614                                int32_t                  src_x,
 615                                int32_t                  src_y,
 616                                int32_t                  mask_x,
 617                                int32_t                  mask_y,
 618                                int32_t                  dest_x,
 619                                int32_t                  dest_y,
 620                                int32_t                  width,
 621                                int32_t                  height,
 622                                pixman_composite_func_t  composite_rect);
 623
 624 void
 625 pixman_expand (uint64_t *           dst,
 626                const uint32_t *     src,
 627                pixman_format_code_t format,
 628                int                  width);
 629
 630 void
 631 pixman_contract (uint32_t *      dst,
 632                  const uint64_t *src,
 633                  int             width);
 634
 635
 636 /* Region Helpers */
 637 pixman_bool_t
 638 pixman_region32_copy_from_region16 (pixman_region32_t *dst,
 639                                     pixman_region16_t *src);
 640
 641 pixman_bool_t
 642 pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 643                                     pixman_region32_t *src);
 644
 645
 646 /* Misc macros */
 647
 648 #ifndef FALSE
 649 #   define FALSE 0
 650 #endif
 651
 652 #ifndef TRUE
 653 #   define TRUE 1
 654 #endif
 655
 656 #ifndef MIN
 657 #  define MIN(a, b) ((a < b) ? a : b)
 658 #endif
 659
 660 #ifndef MAX
 661 #  define MAX(a, b) ((a > b) ? a : b)
 662 #endif
 663
 664 /* Integer division that rounds towards -infinity */
 665 #define DIV(a, b)                                          \
 666     ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
 667      ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
 668
 669 /* Modulus that produces the remainder wrt. DIV */
 670 #define MOD(a, b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
 671
 672 #define CLIP(v, low, high) ((v) < (low) ? (low) : ((v) > (high) ? (high) : (v)))
 673
 674 /* Conversion between 8888 and 0565 */
 675
 676 #define CONVERT_8888_TO_0565(s)                                         \
 677     ((((s) >> 3) & 0x001f) |                                            \
 678      (((s) >> 5) & 0x07e0) |                                            \
 679      (((s) >> 8) & 0xf800))
 680
 681 #define CONVERT_0565_TO_0888(s)                                         \
 682     (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) |                       \
 683      ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) |                   \
 684      ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
 685
 686 #define PIXMAN_FORMAT_IS_WIDE(f)                                        \
 687     (PIXMAN_FORMAT_A (f) > 8 ||                                         \
 688      PIXMAN_FORMAT_R (f) > 8 ||                                         \
 689      PIXMAN_FORMAT_G (f) > 8 ||                                         \
 690      PIXMAN_FORMAT_B (f) > 8)
 691
 692 /*
 693  * Various debugging code
 694  */
 695
 696 #undef DEBUG
 697 #define DEBUG 0
 698
 699 #if DEBUG
 700
 701 #define return_if_fail(expr)                                            \
 702     do                                                                  \
 703     {                                                                   \
 704         if (!(expr))                                                    \
 705         {                                                               \
 706             fprintf (stderr, "In %s: %s failed\n", FUNC, # expr);       \
 707             return;                                                     \
 708         }                                                               \
 709     }                                                                   \
 710     while (0)
 711
 712 #define return_val_if_fail(expr, retval)                                \
 713     do                                                                  \
 714     {                                                                   \
 715         if (!(expr))                                                    \
 716         {                                                               \
 717             fprintf (stderr, "In %s: %s failed\n", FUNC, # expr);       \
 718             return (retval);                                            \
 719         }                                                               \
 720     }                                                                   \
 721     while (0)
 722
 723 #else
 724
 725 #define return_if_fail(expr)                                            \
 726     do                                                                  \
 727     {                                                                   \
 728         if (!(expr))                                                    \
 729             return;                                                     \
 730     }                                                                   \
 731     while (0)
 732
 733 #define return_val_if_fail(expr, retval)                                \
 734     do                                                                  \
 735     {                                                                   \
 736         if (!(expr))                                                    \
 737             return (retval);                                            \
 738     }                                                                   \
 739     while (0)
 740
 741 #endif
 742
 743 /*
 744  * Timers
 745  */
 746
 747 #ifdef PIXMAN_TIMERS
 748
 749 static inline uint64_t
 750 oil_profile_stamp_rdtsc (void)
 751 {
 752     uint64_t ts;
 753
 754     __asm__ __volatile__ ("rdtsc\n" : "=A" (ts));
 755     return ts;
 756 }
 757
 758 #define OIL_STAMP oil_profile_stamp_rdtsc
 759
 760 typedef struct pixman_timer_t pixman_timer_t;
 761
 762 struct pixman_timer_t
 763 {
 764     int             initialized;
 765     const char *    name;
 766     uint64_t        n_times;
 767     uint64_t        total;
 768     pixman_timer_t *next;
 769 };
 770
 771 extern int timer_defined;
 772
 773 void pixman_timer_register (pixman_timer_t *timer);
 774
 775 #define TIMER_BEGIN(tname)                                              \
 776     {                                                                   \
 777         static pixman_timer_t timer ## tname;                           \
 778         uint64_t              begin ## tname;                           \
 779                                                                         \
 780         if (!timer ## tname.initialized)                                \
 781         {                                                               \
 782             timer ## tname.initialized = 1;                             \
 783             timer ## tname.name = # tname;                              \
 784             pixman_timer_register (&timer ## tname);                    \
 785         }                                                               \
 786                                                                         \
 787         timer ## tname.n_times++;                                       \
 788         begin ## tname = OIL_STAMP ();
 789
 790 #define TIMER_END(tname)                                                \
 791     timer ## tname.total += OIL_STAMP () - begin ## tname;              \
 792     }
 793
 794 #endif /* PIXMAN_TIMERS */
 795
 796 #endif /* PIXMAN_PRIVATE_H */