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)  (bits_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 void     (*scanFetchProc)     (pixman_image_t *,
  41                                        int, int, int, uint32_t *,
  42                                        uint32_t *, uint32_t);
  43
  44 typedef enum
  45 {
  46     BITS,
  47     LINEAR,
  48     CONICAL,
  49     RADIAL,
  50     SOLID
  51 } image_type_t;
  52
  53 typedef enum
  54 {
  55     SOURCE_IMAGE_CLASS_UNKNOWN,
  56     SOURCE_IMAGE_CLASS_HORIZONTAL,
  57     SOURCE_IMAGE_CLASS_VERTICAL,
  58 } source_pict_class_t;
  59
  60 typedef source_pict_class_t (* classify_func_t) (pixman_image_t *image,
  61                                                  int             x,
  62                                                  int             y,
  63                                                  int             width,
  64                                                  int             height);
  65 typedef void (* property_changed_func_t)        (pixman_image_t *image);
  66
  67 struct image_common
  68 {
  69     image_type_t                type;
  70     int32_t                     ref_count;
  71     pixman_region32_t           clip_region;
  72     pixman_bool_t               have_clip_region;   /* FALSE if there is no clip */
  73     pixman_bool_t               client_clip;        /* Whether the source clip was
  74                                                        set by a client */
  75     pixman_bool_t               clip_sources;       /* Whether the clip applies when
  76                                                      * the image is used as a source
  77                                                      */
  78     pixman_transform_t         *transform;
  79     pixman_repeat_t             repeat;
  80     pixman_filter_t             filter;
  81     pixman_fixed_t             *filter_params;
  82     int                         n_filter_params;
  83     bits_image_t               *alpha_map;
  84     int                         alpha_origin_x;
  85     int                         alpha_origin_y;
  86     pixman_bool_t               component_alpha;
  87     pixman_read_memory_func_t   read_func;
  88     pixman_write_memory_func_t  write_func;
  89     classify_func_t             classify;
  90     property_changed_func_t     property_changed;
  91     scanFetchProc               get_scanline_32;
  92     scanFetchProc               get_scanline_64;
  93
  94     pixman_image_destroy_func_t destroy_func;
  95     void *                      destroy_data;
  96 };
  97
  98 struct source_image
  99 {
 100     image_common_t      common;
 101     source_pict_class_t class;
 102 };
 103
 104 struct solid_fill
 105 {
 106     source_image_t      common;
 107     uint32_t            color;          /* FIXME: shouldn't this be a pixman_color_t? */
 108 };
 109
 110 struct gradient
 111 {
 112     source_image_t              common;
 113     int                         n_stops;
 114     pixman_gradient_stop_t *    stops;
 115     int                         stop_range;
 116     uint32_t *                  color_table;
 117     int                         color_table_size;
 118 };
 119
 120 struct linear_gradient
 121 {
 122     gradient_t                  common;
 123     pixman_point_fixed_t        p1;
 124     pixman_point_fixed_t        p2;
 125 };
 126
 127 struct circle
 128 {
 129     pixman_fixed_t x;
 130     pixman_fixed_t y;
 131     pixman_fixed_t radius;
 132 };
 133
 134 struct radial_gradient
 135 {
 136     gradient_t  common;
 137
 138     circle_t    c1;
 139     circle_t    c2;
 140     double      cdx;
 141     double      cdy;
 142     double      dr;
 143     double      A;
 144 };
 145
 146 struct conical_gradient
 147 {
 148     gradient_t                  common;
 149     pixman_point_fixed_t        center;
 150     pixman_fixed_t              angle;
 151 };
 152
 153 struct bits_image
 154 {
 155     image_common_t              common;
 156     pixman_format_code_t        format;
 157     const pixman_indexed_t     *indexed;
 158     int                         width;
 159     int                         height;
 160     uint32_t *                  bits;
 161     uint32_t *                  free_me;
 162     int                         rowstride; /* in number of uint32_t's */
 163
 164     /* Fetch raw pixels, with no regard for transformations, alpha map etc. */
 165     fetch_pixels_t              fetch_pixels_raw_32;
 166     fetch_pixels_t              fetch_pixels_raw_64;
 167
 168     /* Fetch raw scanlines, with no regard for transformations, alpha maps etc. */
 169     fetch_scanline_t                    fetch_scanline_raw_32;
 170     fetch_scanline_t                    fetch_scanline_raw_64;
 171
 172     /* Store scanlines with no regard for alpha maps */
 173     store_scanline_t            store_scanline_raw_32;
 174     store_scanline_t            store_scanline_raw_64;
 175
 176     /* Store a scanline, taking alpha maps into account */
 177     store_scanline_t            store_scanline_32;
 178     store_scanline_t            store_scanline_64;
 179
 180     /* Used for indirect access to the bits */
 181     pixman_read_memory_func_t   read_func;
 182     pixman_write_memory_func_t  write_func;
 183 };
 184
 185 union pixman_image
 186 {
 187     image_type_t                type;
 188     image_common_t              common;
 189     bits_image_t                bits;
 190     source_image_t              source;
 191     gradient_t                  gradient;
 192     linear_gradient_t           linear;
 193     conical_gradient_t          conical;
 194     radial_gradient_t           radial;
 195     solid_fill_t                solid;
 196 };
 197
 198
 199 void
 200 _pixman_bits_image_setup_raw_accessors (bits_image_t   *image);
 201
 202 void
 203 _pixman_image_get_scanline_64_generic  (pixman_image_t *pict,
 204                                         int             x,
 205                                         int             y,
 206                                         int             width,
 207                                         uint32_t       *buffer,
 208                                         uint32_t       *mask,
 209                                         uint32_t        maskBits);
 210
 211 source_pict_class_t
 212 _pixman_image_classify (pixman_image_t *image,
 213                         int             x,
 214                         int             y,
 215                         int             width,
 216                         int             height);
 217
 218 void
 219 _pixman_image_get_scanline_32 (pixman_image_t *image, int x, int y, int width,
 220                                uint32_t *buffer, uint32_t *mask,
 221                                uint32_t mask_bits);
 222
 223 /* Even thought the type of buffer is uint32_t *, the function actually expects
 224  * a uint64_t *buffer.
 225  */
 226 void
 227 _pixman_image_get_scanline_64 (pixman_image_t *image, int x, int y, int width,
 228                                uint32_t *buffer,
 229                                uint32_t *unused, uint32_t unused2);
 230
 231 void
 232 _pixman_image_store_scanline_32 (bits_image_t *image, int x, int y, int width,
 233                                  const uint32_t *buffer);
 234 void
 235 _pixman_image_fetch_pixels (bits_image_t *image, uint32_t *buffer,
 236                             int n_pixels);
 237
 238 /* Even thought the type of buffer is uint32_t *, the function actually expects
 239  * a uint64_t *buffer.
 240  */
 241 void
 242 _pixman_image_store_scanline_64 (bits_image_t *image, int x, int y, int width,
 243                                  const uint32_t *buffer);
 244
 245 pixman_image_t *
 246 _pixman_image_allocate (void);
 247
 248 pixman_bool_t
 249 _pixman_init_gradient (gradient_t                   *gradient,
 250                        const pixman_gradient_stop_t *stops,
 251                        int                           n_stops);
 252 void
 253 _pixman_image_reset_clip_region (pixman_image_t *image);
 254
 255 pixman_bool_t
 256 _pixman_image_is_opaque(pixman_image_t *image);
 257
 258 pixman_bool_t
 259 _pixman_image_is_solid (pixman_image_t *image);
 260
 261 uint32_t
 262 _pixman_image_get_solid (pixman_image_t *image,
 263                         pixman_format_code_t format);
 264
 265 #define fbComposeGetStart(pict,x,y,type,out_stride,line,mul) do {       \
 266         uint32_t        *__bits__;                                      \
 267         int             __stride__;                                     \
 268                                                                         \
 269         __bits__ = pict->bits.bits;                                     \
 270         __stride__ = pict->bits.rowstride;                              \
 271         (out_stride) = __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type); \
 272         (line) = ((type *) __bits__) +                                  \
 273             (out_stride) * (y) + (mul) * (x);                           \
 274     } while (0)
 275
 276 /*
 277  * Gradient walker
 278  */
 279 typedef struct
 280 {
 281     uint32_t        left_ag;
 282     uint32_t        left_rb;
 283     uint32_t        right_ag;
 284     uint32_t        right_rb;
 285     int32_t       left_x;
 286     int32_t       right_x;
 287     int32_t       stepper;
 288
 289     pixman_gradient_stop_t      *stops;
 290     int                      num_stops;
 291     unsigned int             spread;
 292
 293     int           need_reset;
 294 } pixman_gradient_walker_t;
 295
 296 void
 297 _pixman_gradient_walker_init (pixman_gradient_walker_t  *walker,
 298                               gradient_t      *gradient,
 299                               unsigned int     spread);
 300
 301 void
 302 _pixman_gradient_walker_reset (pixman_gradient_walker_t       *walker,
 303                                pixman_fixed_32_32_t  pos);
 304
 305 uint32_t
 306 _pixman_gradient_walker_pixel (pixman_gradient_walker_t       *walker,
 307                                pixman_fixed_32_32_t  x);
 308
 309 /*
 310  * Edges
 311  */
 312
 313 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 314 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) - 1)
 315 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) + 1)
 316
 317 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC(n))
 318 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 319
 320 #define Y_FRAC_FIRST(n) (STEP_Y_SMALL(n) / 2)
 321 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST(n) + (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 322
 323 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC(n))
 324 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 325
 326 #define X_FRAC_FIRST(n) (STEP_X_SMALL(n) / 2)
 327 #define X_FRAC_LAST(n)  (X_FRAC_FIRST(n) + (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 328
 329 #define RenderSamplesX(x,n)     ((n) == 1 ? 0 : (pixman_fixed_frac (x) + X_FRAC_FIRST(n)) / STEP_X_SMALL(n))
 330
 331 void
 332 pixman_rasterize_edges_accessors (pixman_image_t *image,
 333                                   pixman_edge_t *l,
 334                                   pixman_edge_t *r,
 335                                   pixman_fixed_t        t,
 336                                   pixman_fixed_t        b);
 337
 338 /*
 339  * Implementations
 340  */
 341
 342 typedef struct pixman_implementation_t pixman_implementation_t;
 343
 344 typedef void (* pixman_combine_32_func_t) (pixman_implementation_t *    imp,
 345                                            pixman_op_t                  op,
 346                                            uint32_t *                   dest,
 347                                            const uint32_t *             src,
 348                                            const uint32_t *             mask,
 349                                            int                          width);
 350
 351 typedef void (* pixman_combine_64_func_t) (pixman_implementation_t *    imp,
 352                                            pixman_op_t                  op,
 353                                            uint64_t *                   dest,
 354                                            const uint64_t *             src,
 355                                            const uint64_t *             mask,
 356                                            int                          width);
 357
 358 typedef void (* pixman_composite_func_t)  (pixman_implementation_t *    imp,
 359                                            pixman_op_t                  op,
 360                                            pixman_image_t *             src,
 361                                            pixman_image_t *             mask,
 362                                            pixman_image_t *             dest,
 363                                            int32_t                      src_x,
 364                                            int32_t                      src_y,
 365                                            int32_t                      mask_x,
 366                                            int32_t                      mask_y,
 367                                            int32_t                      dest_x,
 368                                            int32_t                      dest_y,
 369                                            int32_t                      width,
 370                                            int32_t                      height);
 371 typedef pixman_bool_t (* pixman_blt_func_t) (pixman_implementation_t *  imp,
 372                                              uint32_t *                 src_bits,
 373                                              uint32_t *                 dst_bits,
 374                                              int                        src_stride,
 375                                              int                        dst_stride,
 376                                              int                        src_bpp,
 377                                              int                        dst_bpp,
 378                                              int                        src_x,
 379                                              int                        src_y,
 380                                              int                        dst_x,
 381                                              int                        dst_y,
 382                                              int                        width,
 383                                              int                        height);
 384 typedef pixman_bool_t (* pixman_fill_func_t) (pixman_implementation_t *imp,
 385                                               uint32_t *bits,
 386                                               int stride,
 387                                               int bpp,
 388                                               int x,
 389                                               int y,
 390                                               int width,
 391                                               int height,
 392                                               uint32_t xor);
 393
 394 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
 395 void _pixman_setup_combiner_functions_64 (pixman_implementation_t *imp);
 396
 397 struct pixman_implementation_t
 398 {
 399     pixman_implementation_t *   toplevel;
 400     pixman_implementation_t *   delegate;
 401
 402     pixman_composite_func_t     composite;
 403     pixman_blt_func_t           blt;
 404     pixman_fill_func_t          fill;
 405
 406     pixman_combine_32_func_t    combine_32[PIXMAN_OP_LAST];
 407     pixman_combine_32_func_t    combine_32_ca[PIXMAN_OP_LAST];
 408     pixman_combine_64_func_t    combine_64[PIXMAN_OP_LAST];
 409     pixman_combine_64_func_t    combine_64_ca[PIXMAN_OP_LAST];
 410 };
 411
 412 pixman_implementation_t *
 413 _pixman_implementation_create (pixman_implementation_t *delegate);
 414
 415 void
 416 _pixman_implementation_combine_32 (pixman_implementation_t *    imp,
 417                                    pixman_op_t                  op,
 418                                    uint32_t *                   dest,
 419                                    const uint32_t *             src,
 420                                    const uint32_t *             mask,
 421                                    int                          width);
 422 void
 423 _pixman_implementation_combine_64 (pixman_implementation_t *    imp,
 424                                    pixman_op_t                  op,
 425                                    uint64_t *                   dest,
 426                                    const uint64_t *             src,
 427                                    const uint64_t *             mask,
 428                                    int                          width);
 429 void
 430 _pixman_implementation_combine_32_ca (pixman_implementation_t * imp,
 431                                       pixman_op_t               op,
 432                                       uint32_t *                dest,
 433                                       const uint32_t *          src,
 434                                       const uint32_t *          mask,
 435                                       int                       width);
 436 void
 437 _pixman_implementation_combine_64_ca (pixman_implementation_t * imp,
 438                                       pixman_op_t               op,
 439                                       uint64_t *                dest,
 440                                       const uint64_t *          src,
 441                                       const uint64_t *          mask,
 442                                       int                       width);
 443 void
 444 _pixman_implementation_composite (pixman_implementation_t *     imp,
 445                                   pixman_op_t                   op,
 446                                   pixman_image_t *              src,
 447                                   pixman_image_t *              mask,
 448                                   pixman_image_t *              dest,
 449                                   int32_t                       src_x,
 450                                   int32_t                       src_y,
 451                                   int32_t                       mask_x,
 452                                   int32_t                       mask_y,
 453                                   int32_t                       dest_x,
 454                                   int32_t                       dest_y,
 455                                   int32_t                       width,
 456                                   int32_t                       height);
 457
 458 pixman_bool_t
 459 _pixman_implementation_blt (pixman_implementation_t *   imp,
 460                             uint32_t *                  src_bits,
 461                             uint32_t *                  dst_bits,
 462                             int                         src_stride,
 463                             int                         dst_stride,
 464                             int                         src_bpp,
 465                             int                         dst_bpp,
 466                             int                         src_x,
 467                             int                         src_y,
 468                             int                         dst_x,
 469                             int                         dst_y,
 470                             int                         width,
 471                             int                         height);
 472 pixman_bool_t
 473 _pixman_implementation_fill (pixman_implementation_t *   imp,
 474                              uint32_t *bits,
 475                              int stride,
 476                              int bpp,
 477                              int x,
 478                              int y,
 479                              int width,
 480                              int height,
 481                              uint32_t xor);
 482
 483 /* Specific implementations */
 484 pixman_implementation_t *
 485 _pixman_implementation_create_general (void);
 486 pixman_implementation_t *
 487 _pixman_implementation_create_fast_path (void);
 488 #ifdef USE_MMX
 489 pixman_implementation_t *
 490 _pixman_implementation_create_mmx (void);
 491 #endif
 492 #ifdef USE_SSE2
 493 pixman_implementation_t *
 494 _pixman_implementation_create_sse2 (void);
 495 #endif
 496 #ifdef USE_ARM_SIMD
 497 pixman_implementation_t *
 498 _pixman_implementation_create_arm_simd (void);
 499 #endif
 500 #ifdef USE_ARM_NEON
 501 pixman_implementation_t *
 502 _pixman_implementation_create_arm_neon (void);
 503 #endif
 504 #ifdef USE_VMX
 505 pixman_implementation_t *
 506 _pixman_implementation_create_vmx (void);
 507 #endif
 508
 509 pixman_implementation_t *
 510 _pixman_choose_implementation (void);
 511
 512
 513
 514 /*
 515  * Utilities
 516  */
 517
 518 /* These "formats" both have depth 0, so they
 519  * will never clash with any real ones
 520  */
 521 #define PIXMAN_null             PIXMAN_FORMAT(0,0,0,0,0,0)
 522 #define PIXMAN_solid            PIXMAN_FORMAT(0,1,0,0,0,0)
 523
 524 #define NEED_COMPONENT_ALPHA            (1 << 0)
 525 #define NEED_PIXBUF                     (1 << 1)
 526 #define NEED_SOLID_MASK                 (1 << 2)
 527
 528 typedef struct
 529 {
 530     pixman_op_t                 op;
 531     pixman_format_code_t        src_format;
 532     pixman_format_code_t        mask_format;
 533     pixman_format_code_t        dest_format;
 534     pixman_composite_func_t     func;
 535     uint32_t                    flags;
 536 } pixman_fast_path_t;
 537
 538 /* Memory allocation helpers */
 539 void *
 540 pixman_malloc_ab (unsigned int n, unsigned int b);
 541
 542 void *
 543 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
 544
 545 pixman_bool_t
 546 pixman_multiply_overflows_int (unsigned int a, unsigned int b);
 547
 548 pixman_bool_t
 549 pixman_addition_overflows_int (unsigned int a, unsigned int b);
 550
 551 /* Compositing utilities */
 552 pixman_bool_t
 553 _pixman_run_fast_path (const pixman_fast_path_t *paths,
 554                        pixman_implementation_t *imp,
 555                        pixman_op_t op,
 556                        pixman_image_t *src,
 557                        pixman_image_t *mask,
 558                        pixman_image_t *dest,
 559                        int32_t src_x,
 560                        int32_t src_y,
 561                        int32_t mask_x,
 562                        int32_t mask_y,
 563                        int32_t dest_x,
 564                        int32_t dest_y,
 565                        int32_t width,
 566                        int32_t height);
 567
 568 void
 569 _pixman_walk_composite_region (pixman_implementation_t *imp,
 570                                pixman_op_t op,
 571                                pixman_image_t * pSrc,
 572                                pixman_image_t * pMask,
 573                                pixman_image_t * pDst,
 574                                int16_t xSrc,
 575                                int16_t ySrc,
 576                                int16_t xMask,
 577                                int16_t yMask,
 578                                int16_t xDst,
 579                                int16_t yDst,
 580                                uint16_t width,
 581                                uint16_t height,
 582                                pixman_composite_func_t compositeRect);
 583
 584 void
 585 pixman_expand (uint64_t *dst, const uint32_t *src, pixman_format_code_t, int width);
 586
 587 void
 588 pixman_contract (uint32_t *dst, const uint64_t *src, int width);
 589
 590
 591 /* Region Helpers */
 592 pixman_bool_t
 593 pixman_region32_copy_from_region16 (pixman_region32_t *dst,
 594                                     pixman_region16_t *src);
 595
 596 pixman_bool_t
 597 pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 598                                     pixman_region32_t *src);
 599
 600
 601 /* Misc macros */
 602
 603 #ifndef FALSE
 604 #   define FALSE 0
 605 #endif
 606
 607 #ifndef TRUE
 608 #   define TRUE 1
 609 #endif
 610
 611 #ifndef MIN
 612 #  define MIN(a,b) ((a < b)? a : b)
 613 #endif
 614
 615 #ifndef MAX
 616 #  define MAX(a,b) ((a > b)? a : b)
 617 #endif
 618
 619 /* Integer division that rounds towards -infinity */
 620 #define DIV(a,b) ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
 621                   ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
 622
 623 /* Modulus that produces the remainder wrt. DIV */
 624 #define MOD(a,b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
 625
 626 #define CLIP(v,low,high) ((v) < (low) ? (low) : ((v) > (high) ? (high) : (v)))
 627
 628 /* Conversion between 8888 and 0565 */
 629
 630 #define cvt8888to0565(s)    ((((s) >> 3) & 0x001f) | \
 631                              (((s) >> 5) & 0x07e0) | \
 632                              (((s) >> 8) & 0xf800))
 633 #define cvt0565to0888(s)    (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \
 634                              ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \
 635                              ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
 636
 637 #define PIXMAN_FORMAT_IS_WIDE(f)        (PIXMAN_FORMAT_A(f) > 8 || \
 638                                          PIXMAN_FORMAT_R(f) > 8 || \
 639                                          PIXMAN_FORMAT_G(f) > 8 || \
 640                                          PIXMAN_FORMAT_B(f) > 8)
 641
 642 /*
 643  * Various debugging code
 644  */
 645
 646 #undef DEBUG
 647 #define DEBUG 0
 648
 649 #if DEBUG
 650
 651 #define return_if_fail(expr)                                            \
 652     do                                                                  \
 653     {                                                                   \
 654         if (!(expr))                                                    \
 655         {                                                               \
 656             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
 657             return;                                                     \
 658         }                                                               \
 659     }                                                                   \
 660     while (0)
 661
 662 #define return_val_if_fail(expr, retval)                                \
 663     do                                                                  \
 664     {                                                                   \
 665         if (!(expr))                                                    \
 666         {                                                               \
 667             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
 668             return (retval);                                            \
 669         }                                                               \
 670     }                                                                   \
 671     while (0)
 672
 673 #else
 674
 675 #define return_if_fail(expr)                                            \
 676     do                                                                  \
 677     {                                                                   \
 678         if (!(expr))                                                    \
 679             return;                                                     \
 680     }                                                                   \
 681     while (0)
 682
 683 #define return_val_if_fail(expr, retval)                                \
 684     do                                                                  \
 685     {                                                                   \
 686         if (!(expr))                                                    \
 687             return (retval);                                            \
 688     }                                                                   \
 689     while (0)
 690
 691 #endif
 692
 693 /*
 694  * Timers
 695  */
 696
 697 #ifdef PIXMAN_TIMERS
 698
 699 static inline uint64_t
 700 oil_profile_stamp_rdtsc (void)
 701 {
 702     uint64_t ts;
 703     __asm__ __volatile__("rdtsc\n" : "=A" (ts));
 704     return ts;
 705 }
 706 #define OIL_STAMP oil_profile_stamp_rdtsc
 707
 708 typedef struct pixman_timer_t pixman_timer_t;
 709
 710 struct pixman_timer_t
 711 {
 712     int initialized;
 713     const char *name;
 714     uint64_t n_times;
 715     uint64_t total;
 716     pixman_timer_t *next;
 717 };
 718
 719 extern int timer_defined;
 720 void pixman_timer_register (pixman_timer_t *timer);
 721
 722 #define TIMER_BEGIN(tname)                                              \
 723     {                                                                   \
 724         static pixman_timer_t   timer##tname;                           \
 725         uint64_t                begin##tname;                           \
 726                                                                         \
 727         if (!timer##tname.initialized)                                  \
 728         {                                                               \
 729             timer##tname.initialized = 1;                               \
 730             timer##tname.name = #tname;                                 \
 731             pixman_timer_register (&timer##tname);                      \
 732         }                                                               \
 733                                                                         \
 734         timer##tname.n_times++;                                         \
 735         begin##tname = OIL_STAMP();
 736
 737 #define TIMER_END(tname)                                                \
 738         timer##tname.total += OIL_STAMP() - begin##tname;               \
 739     }
 740
 741 #endif /* PIXMAN_TIMERS */
 742
 743 #endif /* PIXMAN_PRIVATE_H */