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