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