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 #include "pixman.h"
   9 #include <time.h>
  10 #include <assert.h>
  11
  12 #include "pixman-compiler.h"
  13
  14 /*
  15  * Images
  16  */
  17 typedef struct image_common image_common_t;
  18 typedef struct source_image source_image_t;
  19 typedef struct solid_fill solid_fill_t;
  20 typedef struct gradient gradient_t;
  21 typedef struct linear_gradient linear_gradient_t;
  22 typedef struct horizontal_gradient horizontal_gradient_t;
  23 typedef struct vertical_gradient vertical_gradient_t;
  24 typedef struct conical_gradient conical_gradient_t;
  25 typedef struct radial_gradient radial_gradient_t;
  26 typedef struct bits_image bits_image_t;
  27 typedef struct circle circle_t;
  28
  29 typedef void (*fetch_scanline_t) (pixman_image_t *image,
  30                                   int             x,
  31                                   int             y,
  32                                   int             width,
  33                                   uint32_t       *buffer,
  34                                   const uint32_t *mask,
  35                                   uint32_t        mask_bits);
  36
  37 typedef void (*fetch_pixels_t)   (bits_image_t *  image,
  38                                   uint32_t *      buffer,
  39                                   int             n_pixels);
  40
  41 typedef uint32_t (*fetch_pixel_32_t) (bits_image_t *image,
  42                                       int           x,
  43                                       int           y);
  44
  45 typedef void (*store_scanline_t) (bits_image_t *  image,
  46                                   int             x,
  47                                   int             y,
  48                                   int             width,
  49                                   const uint32_t *values);
  50
  51 typedef enum
  52 {
  53     BITS,
  54     LINEAR,
  55     CONICAL,
  56     RADIAL,
  57     SOLID
  58 } image_type_t;
  59
  60 typedef enum
  61 {
  62     SOURCE_IMAGE_CLASS_UNKNOWN,
  63     SOURCE_IMAGE_CLASS_HORIZONTAL,
  64     SOURCE_IMAGE_CLASS_VERTICAL,
  65 } source_image_class_t;
  66
  67 typedef source_image_class_t (*classify_func_t) (pixman_image_t *image,
  68                                                 int             x,
  69                                                 int             y,
  70                                                 int             width,
  71                                                 int             height);
  72 typedef void (*property_changed_func_t) (pixman_image_t *image);
  73
  74 struct image_common
  75 {
  76     image_type_t                type;
  77     int32_t                     ref_count;
  78     pixman_region32_t           clip_region;
  79     pixman_bool_t               have_clip_region;   /* FALSE if there is no clip */
  80     pixman_bool_t               client_clip;        /* Whether the source clip was
  81                                                        set by a client */
  82     pixman_bool_t               clip_sources;       /* Whether the clip applies when
  83                                                      * the image is used as a source
  84                                                      */
  85     pixman_bool_t               need_workaround;
  86     pixman_transform_t *        transform;
  87     pixman_repeat_t             repeat;
  88     pixman_filter_t             filter;
  89     pixman_fixed_t *            filter_params;
  90     int                         n_filter_params;
  91     bits_image_t *              alpha_map;
  92     int                         alpha_origin_x;
  93     int                         alpha_origin_y;
  94     pixman_bool_t               component_alpha;
  95     classify_func_t             classify;
  96     property_changed_func_t     property_changed;
  97     fetch_scanline_t            get_scanline_32;
  98     fetch_scanline_t            get_scanline_64;
  99
 100     pixman_image_destroy_func_t destroy_func;
 101     void *                      destroy_data;
 102 };
 103
 104 struct source_image
 105 {
 106     image_common_t common;
 107     source_image_class_t class;
 108 };
 109
 110 struct solid_fill
 111 {
 112     source_image_t common;
 113     uint32_t       color;    /* FIXME: shouldn't this be a pixman_color_t? */
 114 };
 115
 116 struct gradient
 117 {
 118     source_image_t          common;
 119     int                     n_stops;
 120     pixman_gradient_stop_t *stops;
 121     int                     stop_range;
 122     uint32_t *              color_table;
 123     int                     color_table_size;
 124 };
 125
 126 struct linear_gradient
 127 {
 128     gradient_t           common;
 129     pixman_point_fixed_t p1;
 130     pixman_point_fixed_t p2;
 131 };
 132
 133 struct circle
 134 {
 135     pixman_fixed_t x;
 136     pixman_fixed_t y;
 137     pixman_fixed_t radius;
 138 };
 139
 140 struct radial_gradient
 141 {
 142     gradient_t common;
 143
 144     circle_t   c1;
 145     circle_t   c2;
 146     double     cdx;
 147     double     cdy;
 148     double     dr;
 149     double     A;
 150 };
 151
 152 struct conical_gradient
 153 {
 154     gradient_t           common;
 155     pixman_point_fixed_t center;
 156     pixman_fixed_t       angle;
 157 };
 158
 159 struct bits_image
 160 {
 161     image_common_t             common;
 162     pixman_format_code_t       format;
 163     const pixman_indexed_t *   indexed;
 164     int                        width;
 165     int                        height;
 166     uint32_t *                 bits;
 167     uint32_t *                 free_me;
 168     int                        rowstride;  /* in number of uint32_t's */
 169
 170     /* Fetch raw pixels, with no regard for transformations, alpha map etc. */
 171     fetch_pixels_t             fetch_pixels_raw_32;
 172     fetch_pixels_t             fetch_pixels_raw_64;
 173
 174     /* Fetch a pixel, disregarding alpha maps, transformations etc. */
 175     fetch_pixel_32_t           fetch_pixel_raw_32;
 176
 177     /* Fetch a pixel, taking alpha maps into account */
 178     fetch_pixel_32_t           fetch_pixel_32;
 179
 180     /* Fetch raw scanlines, with no regard for transformations, alpha maps etc. */
 181     fetch_scanline_t           fetch_scanline_raw_32;
 182     fetch_scanline_t           fetch_scanline_raw_64;
 183
 184     /* Store scanlines with no regard for alpha maps */
 185     store_scanline_t           store_scanline_raw_32;
 186     store_scanline_t           store_scanline_raw_64;
 187
 188     /* Store a scanline, taking alpha maps into account */
 189     store_scanline_t           store_scanline_32;
 190     store_scanline_t           store_scanline_64;
 191
 192     /* Used for indirect access to the bits */
 193     pixman_read_memory_func_t  read_func;
 194     pixman_write_memory_func_t write_func;
 195 };
 196
 197 union pixman_image
 198 {
 199     image_type_t       type;
 200     image_common_t     common;
 201     bits_image_t       bits;
 202     source_image_t     source;
 203     gradient_t         gradient;
 204     linear_gradient_t  linear;
 205     conical_gradient_t conical;
 206     radial_gradient_t  radial;
 207     solid_fill_t       solid;
 208 };
 209
 210
 211 void
 212 _pixman_bits_image_setup_raw_accessors (bits_image_t *image);
 213
 214 void
 215 _pixman_image_get_scanline_generic_64  (pixman_image_t *image,
 216                                         int             x,
 217                                         int             y,
 218                                         int             width,
 219                                         uint32_t *      buffer,
 220                                         const uint32_t *mask,
 221                                         uint32_t        mask_bits);
 222
 223 source_image_class_t
 224 _pixman_image_classify (pixman_image_t *image,
 225                         int             x,
 226                         int             y,
 227                         int             width,
 228                         int             height);
 229
 230 void
 231 _pixman_image_get_scanline_32 (pixman_image_t *image,
 232                                int             x,
 233                                int             y,
 234                                int             width,
 235                                uint32_t *      buffer,
 236                                const uint32_t *mask,
 237                                uint32_t        mask_bits);
 238
 239 /* Even thought the type of buffer is uint32_t *, the function actually expects
 240  * a uint64_t *buffer.
 241  */
 242 void
 243 _pixman_image_get_scanline_64 (pixman_image_t *image,
 244                                int             x,
 245                                int             y,
 246                                int             width,
 247                                uint32_t *      buffer,
 248                                const uint32_t *unused,
 249                                uint32_t        unused2);
 250
 251 void
 252 _pixman_image_store_scanline_32 (bits_image_t *  image,
 253                                  int             x,
 254                                  int             y,
 255                                  int             width,
 256                                  const uint32_t *buffer);
 257 void
 258 _pixman_image_fetch_pixels (bits_image_t *image,
 259                             uint32_t *    buffer,
 260                             int           n_pixels);
 261
 262 /* Even though the type of buffer is uint32_t *, the function
 263  * actually expects a uint64_t *buffer.
 264  */
 265 void
 266 _pixman_image_store_scanline_64 (bits_image_t *  image,
 267                                  int             x,
 268                                  int             y,
 269                                  int             width,
 270                                  const uint32_t *buffer);
 271
 272 pixman_image_t *
 273 _pixman_image_allocate (void);
 274
 275 pixman_bool_t
 276 _pixman_init_gradient (gradient_t *                  gradient,
 277                        const pixman_gradient_stop_t *stops,
 278                        int                           n_stops);
 279 void
 280 _pixman_image_reset_clip_region (pixman_image_t *image);
 281
 282 pixman_bool_t
 283 _pixman_image_is_opaque (pixman_image_t *image);
 284
 285 pixman_bool_t
 286 _pixman_image_is_solid (pixman_image_t *image);
 287
 288 uint32_t
 289 _pixman_image_get_solid (pixman_image_t *     image,
 290                          pixman_format_code_t format);
 291
 292 #define PIXMAN_IMAGE_GET_LINE(image, x, y, type, out_stride, line, mul) \
 293     do                                                                  \
 294     {                                                                   \
 295         uint32_t *__bits__;                                             \
 296         int       __stride__;                                           \
 297                                                                         \
 298         __bits__ = image->bits.bits;                                    \
 299         __stride__ = image->bits.rowstride;                             \
 300         (out_stride) =                                                  \
 301             __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type); \
 302         (line) =                                                        \
 303             ((type *) __bits__) + (out_stride) * (y) + (mul) * (x);     \
 304     } while (0)
 305
 306 /*
 307  * Gradient walker
 308  */
 309 typedef struct
 310 {
 311     uint32_t                left_ag;
 312     uint32_t                left_rb;
 313     uint32_t                right_ag;
 314     uint32_t                right_rb;
 315     int32_t                 left_x;
 316     int32_t                 right_x;
 317     int32_t                 stepper;
 318
 319     pixman_gradient_stop_t *stops;
 320     int                     num_stops;
 321     unsigned int            spread;
 322
 323     int                     need_reset;
 324 } pixman_gradient_walker_t;
 325
 326 void
 327 _pixman_gradient_walker_init (pixman_gradient_walker_t *walker,
 328                               gradient_t *              gradient,
 329                               unsigned int              spread);
 330
 331 void
 332 _pixman_gradient_walker_reset (pixman_gradient_walker_t *walker,
 333                                pixman_fixed_32_32_t      pos);
 334
 335 uint32_t
 336 _pixman_gradient_walker_pixel (pixman_gradient_walker_t *walker,
 337                                pixman_fixed_32_32_t      x);
 338
 339 /*
 340  * Edges
 341  */
 342
 343 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 344 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n) / 2)) - 1)
 345 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n) / 2)) + 1)
 346
 347 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC (n))
 348 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
 349
 350 #define Y_FRAC_FIRST(n) (STEP_Y_SMALL (n) / 2)
 351 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST (n) + (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
 352
 353 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC (n))
 354 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
 355
 356 #define X_FRAC_FIRST(n) (STEP_X_SMALL (n) / 2)
 357 #define X_FRAC_LAST(n)  (X_FRAC_FIRST (n) + (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
 358
 359 #define RENDER_SAMPLES_X(x, n)                                          \
 360     ((n) == 1? 0 : (pixman_fixed_frac (x) +                             \
 361                     X_FRAC_FIRST (n)) / STEP_X_SMALL (n))
 362
 363 void
 364 pixman_rasterize_edges_accessors (pixman_image_t *image,
 365                                   pixman_edge_t * l,
 366                                   pixman_edge_t * r,
 367                                   pixman_fixed_t  t,
 368                                   pixman_fixed_t  b);
 369
 370 /*
 371  * Implementations
 372  */
 373
 374 typedef struct pixman_implementation_t pixman_implementation_t;
 375
 376 typedef void (*pixman_combine_32_func_t) (pixman_implementation_t *imp,
 377                                           pixman_op_t              op,
 378                                           uint32_t *               dest,
 379                                           const uint32_t *         src,
 380                                           const uint32_t *         mask,
 381                                           int                      width);
 382
 383 typedef void (*pixman_combine_64_func_t) (pixman_implementation_t *imp,
 384                                           pixman_op_t              op,
 385                                           uint64_t *               dest,
 386                                           const uint64_t *         src,
 387                                           const uint64_t *         mask,
 388                                           int                      width);
 389
 390 typedef void (*pixman_composite_func_t) (pixman_implementation_t *imp,
 391                                          pixman_op_t              op,
 392                                          pixman_image_t *         src,
 393                                          pixman_image_t *         mask,
 394                                          pixman_image_t *         dest,
 395                                          int32_t                  src_x,
 396                                          int32_t                  src_y,
 397                                          int32_t                  mask_x,
 398                                          int32_t                  mask_y,
 399                                          int32_t                  dest_x,
 400                                          int32_t                  dest_y,
 401                                          int32_t                  width,
 402                                          int32_t                  height);
 403 typedef pixman_bool_t (*pixman_blt_func_t) (pixman_implementation_t *imp,
 404                                             uint32_t *               src_bits,
 405                                             uint32_t *               dst_bits,
 406                                             int                      src_stride,
 407                                             int                      dst_stride,
 408                                             int                      src_bpp,
 409                                             int                      dst_bpp,
 410                                             int                      src_x,
 411                                             int                      src_y,
 412                                             int                      dst_x,
 413                                             int                      dst_y,
 414                                             int                      width,
 415                                             int                      height);
 416 typedef pixman_bool_t (*pixman_fill_func_t) (pixman_implementation_t *imp,
 417                                              uint32_t *               bits,
 418                                              int                      stride,
 419                                              int                      bpp,
 420                                              int                      x,
 421                                              int                      y,
 422                                              int                      width,
 423                                              int                      height,
 424                                              uint32_t                 xor);
 425
 426 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
 427 void _pixman_setup_combiner_functions_64 (pixman_implementation_t *imp);
 428
 429 struct pixman_implementation_t
 430 {
 431     pixman_implementation_t *toplevel;
 432     pixman_implementation_t *delegate;
 433
 434     pixman_composite_func_t  composite;
 435     pixman_blt_func_t        blt;
 436     pixman_fill_func_t       fill;
 437
 438     pixman_combine_32_func_t combine_32[PIXMAN_OP_LAST];
 439     pixman_combine_32_func_t combine_32_ca[PIXMAN_OP_LAST];
 440     pixman_combine_64_func_t combine_64[PIXMAN_OP_LAST];
 441     pixman_combine_64_func_t combine_64_ca[PIXMAN_OP_LAST];
 442 };
 443
 444 pixman_implementation_t *
 445 _pixman_implementation_create (pixman_implementation_t *delegate);
 446
 447 void
 448 _pixman_implementation_combine_32 (pixman_implementation_t *imp,
 449                                    pixman_op_t              op,
 450                                    uint32_t *               dest,
 451                                    const uint32_t *         src,
 452                                    const uint32_t *         mask,
 453                                    int                      width);
 454 void
 455 _pixman_implementation_combine_64 (pixman_implementation_t *imp,
 456                                    pixman_op_t              op,
 457                                    uint64_t *               dest,
 458                                    const uint64_t *         src,
 459                                    const uint64_t *         mask,
 460                                    int                      width);
 461 void
 462 _pixman_implementation_combine_32_ca (pixman_implementation_t *imp,
 463                                       pixman_op_t              op,
 464                                       uint32_t *               dest,
 465                                       const uint32_t *         src,
 466                                       const uint32_t *         mask,
 467                                       int                      width);
 468 void
 469 _pixman_implementation_combine_64_ca (pixman_implementation_t *imp,
 470                                       pixman_op_t              op,
 471                                       uint64_t *               dest,
 472                                       const uint64_t *         src,
 473                                       const uint64_t *         mask,
 474                                       int                      width);
 475 void
 476 _pixman_implementation_composite (pixman_implementation_t *imp,
 477                                   pixman_op_t              op,
 478                                   pixman_image_t *         src,
 479                                   pixman_image_t *         mask,
 480                                   pixman_image_t *         dest,
 481                                   int32_t                  src_x,
 482                                   int32_t                  src_y,
 483                                   int32_t                  mask_x,
 484                                   int32_t                  mask_y,
 485                                   int32_t                  dest_x,
 486                                   int32_t                  dest_y,
 487                                   int32_t                  width,
 488                                   int32_t                  height);
 489
 490 pixman_bool_t
 491 _pixman_implementation_blt (pixman_implementation_t *imp,
 492                             uint32_t *               src_bits,
 493                             uint32_t *               dst_bits,
 494                             int                      src_stride,
 495                             int                      dst_stride,
 496                             int                      src_bpp,
 497                             int                      dst_bpp,
 498                             int                      src_x,
 499                             int                      src_y,
 500                             int                      dst_x,
 501                             int                      dst_y,
 502                             int                      width,
 503                             int                      height);
 504
 505 pixman_bool_t
 506 _pixman_implementation_fill (pixman_implementation_t *imp,
 507                              uint32_t *               bits,
 508                              int                      stride,
 509                              int                      bpp,
 510                              int                      x,
 511                              int                      y,
 512                              int                      width,
 513                              int                      height,
 514                              uint32_t                 xor);
 515
 516 /* Specific implementations */
 517 pixman_implementation_t *
 518 _pixman_implementation_create_general (void);
 519
 520 pixman_implementation_t *
 521 _pixman_implementation_create_fast_path (void);
 522
 523 #ifdef USE_MMX
 524 pixman_implementation_t *
 525 _pixman_implementation_create_mmx (void);
 526 #endif
 527
 528 #ifdef USE_SSE2
 529 pixman_implementation_t *
 530 _pixman_implementation_create_sse2 (void);
 531 #endif
 532
 533 #ifdef USE_ARM_SIMD
 534 pixman_implementation_t *
 535 _pixman_implementation_create_arm_simd (void);
 536 #endif
 537
 538 #ifdef USE_ARM_NEON
 539 pixman_implementation_t *
 540 _pixman_implementation_create_arm_neon (void);
 541 #endif
 542
 543 #ifdef USE_VMX
 544 pixman_implementation_t *
 545 _pixman_implementation_create_vmx (void);
 546 #endif
 547
 548 pixman_implementation_t *
 549 _pixman_choose_implementation (void);
 550
 551
 552
 553 /*
 554  * Utilities
 555  */
 556
 557 /* These "formats" both have depth 0, so they
 558  * will never clash with any real ones
 559  */
 560 #define PIXMAN_null             PIXMAN_FORMAT (0, 0, 0, 0, 0, 0)
 561 #define PIXMAN_solid            PIXMAN_FORMAT (0, 1, 0, 0, 0, 0)
 562
 563 #define NEED_COMPONENT_ALPHA            (1 << 0)
 564 #define NEED_PIXBUF                     (1 << 1)
 565 #define NEED_SOLID_MASK                 (1 << 2)
 566
 567 typedef struct
 568 {
 569     pixman_op_t             op;
 570     pixman_format_code_t    src_format;
 571     pixman_format_code_t    mask_format;
 572     pixman_format_code_t    dest_format;
 573     pixman_composite_func_t func;
 574     uint32_t                flags;
 575 } pixman_fast_path_t;
 576
 577 /* Memory allocation helpers */
 578 void *
 579 pixman_malloc_ab (unsigned int n, unsigned int b);
 580
 581 void *
 582 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
 583
 584 pixman_bool_t
 585 pixman_multiply_overflows_int (unsigned int a, unsigned int b);
 586
 587 pixman_bool_t
 588 pixman_addition_overflows_int (unsigned int a, unsigned int b);
 589
 590 /* Compositing utilities */
 591 pixman_bool_t
 592 _pixman_run_fast_path (const pixman_fast_path_t *paths,
 593                        pixman_implementation_t * imp,
 594                        pixman_op_t               op,
 595                        pixman_image_t *          src,
 596                        pixman_image_t *          mask,
 597                        pixman_image_t *          dest,
 598                        int32_t                   src_x,
 599                        int32_t                   src_y,
 600                        int32_t                   mask_x,
 601                        int32_t                   mask_y,
 602                        int32_t                   dest_x,
 603                        int32_t                   dest_y,
 604                        int32_t                   width,
 605                        int32_t                   height);
 606
 607 void
 608 _pixman_walk_composite_region (pixman_implementation_t *imp,
 609                                pixman_op_t              op,
 610                                pixman_image_t *         src_image,
 611                                pixman_image_t *         mask_image,
 612                                pixman_image_t *         dst_image,
 613                                int16_t                  src_x,
 614                                int16_t                  src_y,
 615                                int16_t                  mask_x,
 616                                int16_t                  mask_y,
 617                                int16_t                  dest_x,
 618                                int16_t                  dest_y,
 619                                uint16_t                 width,
 620                                uint16_t                 height,
 621                                pixman_composite_func_t  composite_rect);
 622
 623 void
 624 pixman_expand (uint64_t *           dst,
 625                const uint32_t *     src,
 626                pixman_format_code_t format,
 627                int                  width);
 628
 629 void
 630 pixman_contract (uint32_t *      dst,
 631                  const uint64_t *src,
 632                  int             width);
 633
 634
 635 /* Region Helpers */
 636 pixman_bool_t
 637 pixman_region32_copy_from_region16 (pixman_region32_t *dst,
 638                                     pixman_region16_t *src);
 639
 640 pixman_bool_t
 641 pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 642                                     pixman_region32_t *src);
 643
 644
 645 /* Misc macros */
 646
 647 #ifndef FALSE
 648 #   define FALSE 0
 649 #endif
 650
 651 #ifndef TRUE
 652 #   define TRUE 1
 653 #endif
 654
 655 #ifndef MIN
 656 #  define MIN(a, b) ((a < b) ? a : b)
 657 #endif
 658
 659 #ifndef MAX
 660 #  define MAX(a, b) ((a > b) ? a : b)
 661 #endif
 662
 663 /* Integer division that rounds towards -infinity */
 664 #define DIV(a, b)                                          \
 665     ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
 666      ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
 667
 668 /* Modulus that produces the remainder wrt. DIV */
 669 #define MOD(a, b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
 670
 671 #define CLIP(v, low, high) ((v) < (low) ? (low) : ((v) > (high) ? (high) : (v)))
 672
 673 /* Conversion between 8888 and 0565 */
 674
 675 #define CONVERT_8888_TO_0565(s)                                         \
 676     ((((s) >> 3) & 0x001f) |                                            \
 677      (((s) >> 5) & 0x07e0) |                                            \
 678      (((s) >> 8) & 0xf800))
 679
 680 #define CONVERT_0565_TO_0888(s)                                         \
 681     (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) |                       \
 682      ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) |                   \
 683      ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
 684
 685 #define PIXMAN_FORMAT_IS_WIDE(f)                                        \
 686     (PIXMAN_FORMAT_A (f) > 8 ||                                         \
 687      PIXMAN_FORMAT_R (f) > 8 ||                                         \
 688      PIXMAN_FORMAT_G (f) > 8 ||                                         \
 689      PIXMAN_FORMAT_B (f) > 8)
 690
 691 /*
 692  * Various debugging code
 693  */
 694
 695 #undef DEBUG
 696 #define DEBUG 0
 697
 698 #if DEBUG
 699
 700 #define return_if_fail(expr)                                            \
 701     do                                                                  \
 702     {                                                                   \
 703         if (!(expr))                                                    \
 704         {                                                               \
 705             fprintf (stderr, "In %s: %s failed\n", FUNC, # expr);       \
 706             return;                                                     \
 707         }                                                               \
 708     }                                                                   \
 709     while (0)
 710
 711 #define return_val_if_fail(expr, retval)                                \
 712     do                                                                  \
 713     {                                                                   \
 714         if (!(expr))                                                    \
 715         {                                                               \
 716             fprintf (stderr, "In %s: %s failed\n", FUNC, # expr);       \
 717             return (retval);                                            \
 718         }                                                               \
 719     }                                                                   \
 720     while (0)
 721
 722 #else
 723
 724 #define return_if_fail(expr)                                            \
 725     do                                                                  \
 726     {                                                                   \
 727         if (!(expr))                                                    \
 728             return;                                                     \
 729     }                                                                   \
 730     while (0)
 731
 732 #define return_val_if_fail(expr, retval)                                \
 733     do                                                                  \
 734     {                                                                   \
 735         if (!(expr))                                                    \
 736             return (retval);                                            \
 737     }                                                                   \
 738     while (0)
 739
 740 #endif
 741
 742 /*
 743  * Timers
 744  */
 745
 746 #ifdef PIXMAN_TIMERS
 747
 748 static inline uint64_t
 749 oil_profile_stamp_rdtsc (void)
 750 {
 751     uint64_t ts;
 752
 753     __asm__ __volatile__ ("rdtsc\n" : "=A" (ts));
 754     return ts;
 755 }
 756
 757 #define OIL_STAMP oil_profile_stamp_rdtsc
 758
 759 typedef struct pixman_timer_t pixman_timer_t;
 760
 761 struct pixman_timer_t
 762 {
 763     int             initialized;
 764     const char *    name;
 765     uint64_t        n_times;
 766     uint64_t        total;
 767     pixman_timer_t *next;
 768 };
 769
 770 extern int timer_defined;
 771
 772 void pixman_timer_register (pixman_timer_t *timer);
 773
 774 #define TIMER_BEGIN(tname)                                              \
 775     {                                                                   \
 776         static pixman_timer_t timer ## tname;                           \
 777         uint64_t              begin ## tname;                           \
 778                                                                         \
 779         if (!timer ## tname.initialized)                                \
 780         {                                                               \
 781             timer ## tname.initialized = 1;                             \
 782             timer ## tname.name = # tname;                              \
 783             pixman_timer_register (&timer ## tname);                    \
 784         }                                                               \
 785                                                                         \
 786         timer ## tname.n_times++;                                       \
 787         begin ## tname = OIL_STAMP ();
 788
 789 #define TIMER_END(tname)                                                \
 790     timer ## tname.total += OIL_STAMP () - begin ## tname;              \
 791     }
 792
 793 #endif /* PIXMAN_TIMERS */
 794
 795 #endif /* PIXMAN_PRIVATE_H */