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 #undef DEBUG
  15 #define DEBUG 0
  16
  17 #if DEBUG
  18
  19 #define return_if_fail(expr)                                            \
  20     do                                                                  \
  21     {                                                                   \
  22         if (!(expr))                                                    \
  23         {                                                               \
  24             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
  25             return;                                                     \
  26         }                                                               \
  27     }                                                                   \
  28     while (0)
  29
  30 #define return_val_if_fail(expr, retval)                                \
  31     do                                                                  \
  32     {                                                                   \
  33         if (!(expr))                                                    \
  34         {                                                               \
  35             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
  36             return (retval);                                            \
  37         }                                                               \
  38     }                                                                   \
  39     while (0)
  40
  41 #else
  42
  43 #define return_if_fail(expr)                                            \
  44     do                                                                  \
  45     {                                                                   \
  46         if (!(expr))                                                    \
  47             return;                                                     \
  48     }                                                                   \
  49     while (0)
  50
  51 #define return_val_if_fail(expr, retval)                                \
  52     do                                                                  \
  53     {                                                                   \
  54         if (!(expr))                                                    \
  55             return (retval);                                            \
  56     }                                                                   \
  57     while (0)
  58
  59 #endif
  60
  61
  62 /*
  63  * Images
  64  */
  65 typedef struct image_common image_common_t;
  66 typedef struct source_image source_image_t;
  67 typedef struct solid_fill solid_fill_t;
  68 typedef struct gradient gradient_t;
  69 typedef struct linear_gradient linear_gradient_t;
  70 typedef struct horizontal_gradient horizontal_gradient_t;
  71 typedef struct vertical_gradient vertical_gradient_t;
  72 typedef struct conical_gradient conical_gradient_t;
  73 typedef struct radial_gradient radial_gradient_t;
  74 typedef struct bits_image bits_image_t;
  75 typedef struct circle circle_t;
  76
  77 /* FIXME - the types and structures below should be give proper names
  78  */
  79
  80 typedef void (*fetchProc32)(bits_image_t *pict, int x, int y, int width,
  81                                      uint32_t *buffer);
  82 typedef uint32_t (*fetchPixelProc32)(bits_image_t *pict, int offset, int line);
  83 typedef void (*storeProc32)(pixman_image_t *, uint32_t *bits,
  84                             const uint32_t *values, int x, int width);
  85
  86 typedef void (*fetchProc64)(bits_image_t *pict, int x, int y, int width,
  87                                      uint64_t *buffer);
  88 typedef uint64_t (*fetchPixelProc64)(bits_image_t *pict, int offset, int line);
  89 typedef void (*storeProc64)(pixman_image_t *, uint32_t *bits,
  90                             const uint64_t *values, int x, int width);
  91
  92 typedef void (* fetch_pixels_32_t) (bits_image_t *image, uint32_t *buffer, int n_pixels);
  93 typedef void (* fetch_pixels_64_t) (bits_image_t *image, uint64_t *buffer, int n_pixels);
  94
  95 void _pixman_bits_image_setup_raw_accessors (bits_image_t *image);
  96
  97 void pixman_expand(uint64_t *dst, const uint32_t *src, pixman_format_code_t, int width);
  98 void pixman_contract(uint32_t *dst, const uint64_t *src, int width);
  99
 100 void _pixman_image_get_scanline_64_generic (pixman_image_t * pict, int x, int y, int width,
 101                                             uint64_t *buffer, uint64_t *mask, uint32_t maskBits);
 102
 103 /* end */
 104
 105 typedef enum
 106 {
 107     BITS,
 108     LINEAR,
 109     CONICAL,
 110     RADIAL,
 111     SOLID
 112 } image_type_t;
 113
 114 typedef enum
 115 {
 116     SOURCE_IMAGE_CLASS_UNKNOWN,
 117     SOURCE_IMAGE_CLASS_HORIZONTAL,
 118     SOURCE_IMAGE_CLASS_VERTICAL,
 119 } source_pict_class_t;
 120
 121 typedef void (*scanStoreProc)(bits_image_t *img, int x, int y, int width, uint32_t *buffer);
 122 typedef void (*scanFetchProc)(pixman_image_t *, int, int, int, uint32_t *,
 123                               uint32_t *, uint32_t);
 124
 125 source_pict_class_t
 126 _pixman_image_classify (pixman_image_t *image,
 127                         int             x,
 128                         int             y,
 129                         int             width,
 130                         int             height);
 131
 132 void
 133 _pixman_image_get_scanline_32 (pixman_image_t *image, int x, int y, int width,
 134                                uint32_t *buffer, uint32_t *mask, uint32_t mask_bits);
 135
 136 /* Even thought the type of buffer is uint32_t *, the function actually expects
 137  * a uint64_t *buffer.
 138  */
 139 void
 140 _pixman_image_get_scanline_64 (pixman_image_t *image, int x, int y, int width,
 141                                uint32_t *buffer, uint32_t *unused, uint32_t unused2);
 142
 143 void
 144 _pixman_image_store_scanline_32 (bits_image_t *image, int x, int y, int width,
 145                                  uint32_t *buffer);
 146 void
 147 _pixman_image_fetch_pixels (bits_image_t *image, uint32_t *buffer, int n_pixels);
 148
 149 /* Even thought the type of buffer is uint32_t *, the function actually expects
 150  * a uint64_t *buffer.
 151  */
 152 void
 153 _pixman_image_store_scanline_64 (bits_image_t *image, int x, int y, int width,
 154                                  uint32_t *buffer);
 155
 156 pixman_image_t *
 157 _pixman_image_allocate (void);
 158
 159 pixman_bool_t
 160 _pixman_init_gradient (gradient_t     *gradient,
 161                        const pixman_gradient_stop_t *stops,
 162                        int             n_stops);
 163 void
 164 _pixman_image_reset_clip_region (pixman_image_t *image);
 165
 166 typedef source_pict_class_t (* classify_func_t) (pixman_image_t *image,
 167                                                  int             x,
 168                                                  int             y,
 169                                                  int             width,
 170                                                  int             height);
 171 typedef void (* property_changed_func_t)        (pixman_image_t *image);
 172
 173 struct image_common
 174 {
 175     image_type_t                type;
 176     int32_t                     ref_count;
 177     pixman_region32_t           clip_region;
 178     pixman_bool_t               have_clip_region;   /* FALSE if there is no clip */
 179     pixman_bool_t               client_clip;        /* Whether the source clip was set by a client */
 180     pixman_bool_t               clip_sources;       /* Whether the clip applies when
 181                                                      * the image is used as a source
 182                                                      */
 183     pixman_transform_t         *transform;
 184     pixman_repeat_t             repeat;
 185     pixman_filter_t             filter;
 186     pixman_fixed_t             *filter_params;
 187     int                         n_filter_params;
 188     bits_image_t               *alpha_map;
 189     int                         alpha_origin_x;
 190     int                         alpha_origin_y;
 191     pixman_bool_t               component_alpha;
 192     pixman_read_memory_func_t   read_func;
 193     pixman_write_memory_func_t  write_func;
 194     classify_func_t             classify;
 195     property_changed_func_t     property_changed;
 196     scanFetchProc               get_scanline_32;
 197     scanFetchProc               get_scanline_64;
 198
 199     pixman_image_destroy_func_t destroy_func;
 200     void *                      destroy_data;
 201 };
 202
 203 struct source_image
 204 {
 205     image_common_t      common;
 206     source_pict_class_t class;
 207 };
 208
 209 struct solid_fill
 210 {
 211     source_image_t      common;
 212     uint32_t            color;          /* FIXME: shouldn't this be a pixman_color_t? */
 213 };
 214
 215 struct gradient
 216 {
 217     source_image_t              common;
 218     int                         n_stops;
 219     pixman_gradient_stop_t *    stops;
 220     int                         stop_range;
 221     uint32_t *                  color_table;
 222     int                         color_table_size;
 223 };
 224
 225 struct linear_gradient
 226 {
 227     gradient_t                  common;
 228     pixman_point_fixed_t        p1;
 229     pixman_point_fixed_t        p2;
 230 };
 231
 232 struct circle
 233 {
 234     pixman_fixed_t x;
 235     pixman_fixed_t y;
 236     pixman_fixed_t radius;
 237 };
 238
 239 struct radial_gradient
 240 {
 241     gradient_t  common;
 242
 243     circle_t    c1;
 244     circle_t    c2;
 245     double      cdx;
 246     double      cdy;
 247     double      dr;
 248     double      A;
 249 };
 250
 251 struct conical_gradient
 252 {
 253     gradient_t                  common;
 254     pixman_point_fixed_t        center;
 255     pixman_fixed_t              angle;
 256 };
 257
 258 struct bits_image
 259 {
 260     image_common_t              common;
 261     pixman_format_code_t        format;
 262     const pixman_indexed_t     *indexed;
 263     int                         width;
 264     int                         height;
 265     uint32_t *                  bits;
 266     uint32_t *                  free_me;
 267     int                         rowstride; /* in number of uint32_t's */
 268
 269     /* Fetch raw pixels, with no regard for transformations, alpha map etc. */
 270     fetch_pixels_32_t           fetch_pixels_raw_32;
 271     fetch_pixels_64_t           fetch_pixels_raw_64;
 272
 273     /* Fetch raw scanlines, with no regard for transformations, alpha maps etc. */
 274     fetchProc32                 fetch_scanline_raw_32;
 275     fetchProc64                 fetch_scanline_raw_64;
 276
 277     /* Store scanlines with no regard for alpha maps */
 278     storeProc32                 store_scanline_raw_32;
 279     storeProc64                 store_scanline_raw_64;
 280
 281     /* Store a scanline, taking alpha maps into account */
 282     scanStoreProc               store_scanline_32;
 283     scanStoreProc               store_scanline_64;
 284
 285     /* Used for indirect access to the bits */
 286     pixman_read_memory_func_t   read_func;
 287     pixman_write_memory_func_t  write_func;
 288 };
 289
 290 union pixman_image
 291 {
 292     image_type_t                type;
 293     image_common_t              common;
 294     bits_image_t                bits;
 295     source_image_t              source;
 296     gradient_t                  gradient;
 297     linear_gradient_t           linear;
 298     conical_gradient_t          conical;
 299     radial_gradient_t           radial;
 300     solid_fill_t                solid;
 301 };
 302
 303 /*
 304  * Gradient walker
 305  */
 306 typedef struct
 307 {
 308     uint32_t        left_ag;
 309     uint32_t        left_rb;
 310     uint32_t        right_ag;
 311     uint32_t        right_rb;
 312     int32_t       left_x;
 313     int32_t       right_x;
 314     int32_t       stepper;
 315
 316     pixman_gradient_stop_t      *stops;
 317     int                      num_stops;
 318     unsigned int             spread;
 319
 320     int           need_reset;
 321 } pixman_gradient_walker_t;
 322
 323 void
 324 _pixman_gradient_walker_init (pixman_gradient_walker_t  *walker,
 325                               gradient_t      *gradient,
 326                               unsigned int     spread);
 327
 328 void
 329 _pixman_gradient_walker_reset (pixman_gradient_walker_t       *walker,
 330                                pixman_fixed_32_32_t  pos);
 331
 332 uint32_t
 333 _pixman_gradient_walker_pixel (pixman_gradient_walker_t       *walker,
 334                                pixman_fixed_32_32_t  x);
 335
 336
 337
 338 #ifdef WORDS_BIGENDIAN
 339 #define Fetch24(img, a)  ((unsigned long) (a) & 1 ?           \
 340     ((READ(img, a) << 16) | READ(img, (uint16_t *) ((a)+1))) : \
 341     ((READ(img, (uint16_t *) (a)) << 8) | READ(img, (a)+2)))
 342 #define Store24(img,a,v) ((unsigned long) (a) & 1 ? \
 343     (WRITE(img, a, (uint8_t) ((v) >> 16)),                \
 344      WRITE(img, (uint16_t *) ((a)+1), (uint16_t) (v))) :  \
 345     (WRITE(img, (uint16_t *) (a), (uint16_t) ((v) >> 8)), \
 346      WRITE(img, (a)+2, (uint8_t) (v))))
 347 #else
 348 #define Fetch24(img,a)  ((unsigned long) (a) & 1 ?                           \
 349     (READ(img, a) | (READ(img, (uint16_t *) ((a)+1)) << 8)) : \
 350     (READ(img, (uint16_t *) (a)) | (READ(img, (a)+2) << 16)))
 351 #define Store24(img,a,v) ((unsigned long) (a) & 1 ? \
 352     (WRITE(img, a, (uint8_t) (v)),                              \
 353      WRITE(img, (uint16_t *) ((a)+1), (uint16_t) ((v) >> 8))) : \
 354     (WRITE(img, (uint16_t *) (a), (uint16_t) (v)),              \
 355      WRITE(img, (a)+2, (uint8_t) ((v) >> 16))))
 356 #endif
 357
 358 #define FbIntMult(a,b,t) ( (t) = (a) * (b) + 0x80, ( ( ( (t)>>8 ) + (t) )>>8 ) )
 359 #define FbIntDiv(a,b)    (((uint16_t) (a) * 255) / (b))
 360
 361 #define FbGet8(v,i)   ((uint16_t) (uint8_t) ((v) >> i))
 362
 363
 364 #define cvt8888to0565(s)    ((((s) >> 3) & 0x001f) | \
 365                              (((s) >> 5) & 0x07e0) | \
 366                              (((s) >> 8) & 0xf800))
 367 #define cvt0565to0888(s)    (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \
 368                              ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \
 369                              ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
 370
 371 /*
 372  * There are two ways of handling alpha -- either as a single unified value or
 373  * a separate value for each component, hence each macro must have two
 374  * versions.  The unified alpha version has a 'U' at the end of the name,
 375  * the component version has a 'C'.  Similarly, functions which deal with
 376  * this difference will have two versions using the same convention.
 377  */
 378
 379 #define FbOverU(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),(a),(t)) + FbGet8(x,i), \
 380                             (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 381
 382 #define FbOverC(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),FbGet8(a,i),(t)) + FbGet8(x,i), \
 383                             (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 384
 385 #define FbInU(x,i,a,t) ((uint32_t) FbIntMult(FbGet8(x,i),(a),(t)) << (i))
 386
 387 #define FbInC(x,i,a,t) ((uint32_t) FbIntMult(FbGet8(x,i),FbGet8(a,i),(t)) << (i))
 388
 389 #define FbAdd(x,y,i,t)  ((t) = FbGet8(x,i) + FbGet8(y,i),               \
 390                          (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 391
 392 #define div_255(x) (((x) + 0x80 + (((x) + 0x80) >> 8)) >> 8)
 393 #define div_65535(x) (((x) + 0x8000 + (((x) + 0x8000) >> 16)) >> 16)
 394
 395 #ifdef PIXMAN_FB_ACCESSORS
 396
 397 #define ACCESS(sym) sym##_accessors
 398
 399 #define READ(img, ptr)                                                  \
 400     ((img)->common.read_func ((ptr), sizeof(*(ptr))))
 401 #define WRITE(img, ptr,val)                                             \
 402     ((img)->common.write_func ((ptr), (val), sizeof (*(ptr))))
 403
 404 #define MEMCPY_WRAPPED(img, dst, src, size)                             \
 405     do {                                                                \
 406         size_t _i;                                                      \
 407         uint8_t *_dst = (uint8_t*)(dst), *_src = (uint8_t*)(src);       \
 408         for(_i = 0; _i < size; _i++) {                                  \
 409             WRITE((img), _dst +_i, READ((img), _src + _i));             \
 410         }                                                               \
 411     } while (0)
 412
 413 #define MEMSET_WRAPPED(img, dst, val, size)                             \
 414     do {                                                                \
 415         size_t _i;                                                      \
 416         uint8_t *_dst = (uint8_t*)(dst);                                \
 417         for(_i = 0; _i < (size_t) size; _i++) {                         \
 418             WRITE((img), _dst +_i, (val));                              \
 419         }                                                               \
 420     } while (0)
 421
 422 #else
 423
 424 #define ACCESS(sym) sym
 425
 426 #define READ(img, ptr)          (*(ptr))
 427 #define WRITE(img, ptr, val)    (*(ptr) = (val))
 428 #define MEMCPY_WRAPPED(img, dst, src, size)                             \
 429     memcpy(dst, src, size)
 430 #define MEMSET_WRAPPED(img, dst, val, size)                             \
 431     memset(dst, val, size)
 432
 433 #endif
 434
 435 #define fbComposeGetStart(pict,x,y,type,out_stride,line,mul) do {       \
 436         uint32_t        *__bits__;                                      \
 437         int             __stride__;                                     \
 438         int             __bpp__;                                        \
 439                                                                         \
 440         __bits__ = pict->bits.bits;                                     \
 441         __stride__ = pict->bits.rowstride;                              \
 442         __bpp__ = PIXMAN_FORMAT_BPP(pict->bits.format);                 \
 443         (out_stride) = __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type);      \
 444         (line) = ((type *) __bits__) +                                  \
 445             (out_stride) * (y) + (mul) * (x);                           \
 446     } while (0)
 447
 448
 449 #define PIXMAN_FORMAT_16BPC(f)  (PIXMAN_FORMAT_A(f) > 8 || \
 450                                  PIXMAN_FORMAT_R(f) > 8 || \
 451                                  PIXMAN_FORMAT_G(f) > 8 || \
 452                                  PIXMAN_FORMAT_B(f) > 8)
 453 /*
 454  * Edges
 455  */
 456
 457 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 458 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) - 1)
 459 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) + 1)
 460
 461 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC(n))
 462 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 463
 464 #define Y_FRAC_FIRST(n) (STEP_Y_SMALL(n) / 2)
 465 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST(n) + (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 466
 467 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC(n))
 468 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 469
 470 #define X_FRAC_FIRST(n) (STEP_X_SMALL(n) / 2)
 471 #define X_FRAC_LAST(n)  (X_FRAC_FIRST(n) + (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 472
 473 #define RenderSamplesX(x,n)     ((n) == 1 ? 0 : (pixman_fixed_frac (x) + X_FRAC_FIRST(n)) / STEP_X_SMALL(n))
 474
 475 /*
 476  * Step across a small sample grid gap
 477  */
 478 void
 479 pixman_rasterize_edges_accessors (pixman_image_t *image,
 480                                   pixman_edge_t *l,
 481                                   pixman_edge_t *r,
 482                                   pixman_fixed_t        t,
 483                                   pixman_fixed_t        b);
 484
 485 pixman_bool_t
 486 pixman_image_is_opaque(pixman_image_t *image);
 487
 488 pixman_bool_t
 489 pixman_image_is_solid (pixman_image_t *image);
 490
 491 uint32_t
 492 pixman_image_get_solid (pixman_image_t *image,
 493                         pixman_format_code_t format);
 494
 495 /*
 496  * Implementations
 497  */
 498
 499 typedef struct pixman_implementation_t pixman_implementation_t;
 500
 501 typedef void (* pixman_combine_32_func_t) (pixman_implementation_t *    imp,
 502                                            pixman_op_t                  op,
 503                                            uint32_t *                   dest,
 504                                            const uint32_t *             src,
 505                                            const uint32_t *             mask,
 506                                            int                          width);
 507
 508 typedef void (* pixman_combine_64_func_t) (pixman_implementation_t *    imp,
 509                                            pixman_op_t                  op,
 510                                            uint64_t *                   dest,
 511                                            const uint64_t *             src,
 512                                            const uint64_t *             mask,
 513                                            int                          width);
 514
 515 typedef void (* pixman_composite_func_t)  (pixman_implementation_t *    imp,
 516                                            pixman_op_t                  op,
 517                                            pixman_image_t *             src,
 518                                            pixman_image_t *             mask,
 519                                            pixman_image_t *             dest,
 520                                            int32_t                      src_x,
 521                                            int32_t                      src_y,
 522                                            int32_t                      mask_x,
 523                                            int32_t                      mask_y,
 524                                            int32_t                      dest_x,
 525                                            int32_t                      dest_y,
 526                                            int32_t                      width,
 527                                            int32_t                      height);
 528 typedef pixman_bool_t (* pixman_blt_func_t) (pixman_implementation_t *  imp,
 529                                              uint32_t *                 src_bits,
 530                                              uint32_t *                 dst_bits,
 531                                              int                        src_stride,
 532                                              int                        dst_stride,
 533                                              int                        src_bpp,
 534                                              int                        dst_bpp,
 535                                              int                        src_x,
 536                                              int                        src_y,
 537                                              int                        dst_x,
 538                                              int                        dst_y,
 539                                              int                        width,
 540                                              int                        height);
 541 typedef pixman_bool_t (* pixman_fill_func_t) (pixman_implementation_t *imp,
 542                                               uint32_t *bits,
 543                                               int stride,
 544                                               int bpp,
 545                                               int x,
 546                                               int y,
 547                                               int width,
 548                                               int height,
 549                                               uint32_t xor);
 550
 551 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
 552 void _pixman_setup_combiner_functions_64 (pixman_implementation_t *imp);
 553
 554 struct pixman_implementation_t
 555 {
 556     pixman_implementation_t *   toplevel;
 557     pixman_implementation_t *   delegate;
 558
 559     pixman_composite_func_t     composite;
 560     pixman_blt_func_t           blt;
 561     pixman_fill_func_t          fill;
 562
 563     pixman_combine_32_func_t    combine_32[PIXMAN_OP_LAST];
 564     pixman_combine_32_func_t    combine_32_ca[PIXMAN_OP_LAST];
 565     pixman_combine_64_func_t    combine_64[PIXMAN_OP_LAST];
 566     pixman_combine_64_func_t    combine_64_ca[PIXMAN_OP_LAST];
 567 };
 568
 569 pixman_implementation_t *
 570 _pixman_implementation_create (pixman_implementation_t *delegate);
 571
 572 void
 573 _pixman_implementation_combine_32 (pixman_implementation_t *    imp,
 574                                    pixman_op_t                  op,
 575                                    uint32_t *                   dest,
 576                                    const uint32_t *             src,
 577                                    const uint32_t *             mask,
 578                                    int                          width);
 579 void
 580 _pixman_implementation_combine_64 (pixman_implementation_t *    imp,
 581                                    pixman_op_t                  op,
 582                                    uint64_t *                   dest,
 583                                    const uint64_t *             src,
 584                                    const uint64_t *             mask,
 585                                    int                          width);
 586 void
 587 _pixman_implementation_combine_32_ca (pixman_implementation_t * imp,
 588                                       pixman_op_t               op,
 589                                       uint32_t *                dest,
 590                                       const uint32_t *          src,
 591                                       const uint32_t *          mask,
 592                                       int                       width);
 593 void
 594 _pixman_implementation_combine_64_ca (pixman_implementation_t * imp,
 595                                       pixman_op_t               op,
 596                                       uint64_t *                dest,
 597                                       const uint64_t *          src,
 598                                       const uint64_t *          mask,
 599                                       int                       width);
 600 void
 601 _pixman_implementation_composite (pixman_implementation_t *     imp,
 602                                   pixman_op_t                   op,
 603                                   pixman_image_t *              src,
 604                                   pixman_image_t *              mask,
 605                                   pixman_image_t *              dest,
 606                                   int32_t                       src_x,
 607                                   int32_t                       src_y,
 608                                   int32_t                       mask_x,
 609                                   int32_t                       mask_y,
 610                                   int32_t                       dest_x,
 611                                   int32_t                       dest_y,
 612                                   int32_t                       width,
 613                                   int32_t                       height);
 614
 615 pixman_bool_t
 616 _pixman_implementation_blt (pixman_implementation_t *   imp,
 617                             uint32_t *                  src_bits,
 618                             uint32_t *                  dst_bits,
 619                             int                         src_stride,
 620                             int                         dst_stride,
 621                             int                         src_bpp,
 622                             int                         dst_bpp,
 623                             int                         src_x,
 624                             int                         src_y,
 625                             int                         dst_x,
 626                             int                         dst_y,
 627                             int                         width,
 628                             int                         height);
 629 pixman_bool_t
 630 _pixman_implementation_fill (pixman_implementation_t *   imp,
 631                              uint32_t *bits,
 632                              int stride,
 633                              int bpp,
 634                              int x,
 635                              int y,
 636                              int width,
 637                              int height,
 638                              uint32_t xor);
 639
 640 /* Specific implementations */
 641 pixman_implementation_t *
 642 _pixman_implementation_create_general (void);
 643 pixman_implementation_t *
 644 _pixman_implementation_create_fast_path (void);
 645 #ifdef USE_MMX
 646 pixman_implementation_t *
 647 _pixman_implementation_create_mmx (void);
 648 #endif
 649 #ifdef USE_SSE2
 650 pixman_implementation_t *
 651 _pixman_implementation_create_sse2 (void);
 652 #endif
 653 #ifdef USE_ARM_SIMD
 654 pixman_implementation_t *
 655 _pixman_implementation_create_arm_simd (void);
 656 #endif
 657 #ifdef USE_ARM_NEON
 658 pixman_implementation_t *
 659 _pixman_implementation_create_arm_neon (void);
 660 #endif
 661 #ifdef USE_VMX
 662 pixman_implementation_t *
 663 _pixman_implementation_create_vmx (void);
 664 #endif
 665
 666 pixman_implementation_t *
 667 _pixman_choose_implementation (void);
 668
 669
 670
 671
 672 /*
 673  * Utilities
 674  */
 675
 676 /* These "formats" both have depth 0, so they
 677  * will never clash with any real ones
 678  */
 679 #define PIXMAN_null             PIXMAN_FORMAT(0,0,0,0,0,0)
 680 #define PIXMAN_solid            PIXMAN_FORMAT(0,1,0,0,0,0)
 681
 682 #define NEED_COMPONENT_ALPHA            (1 << 0)
 683 #define NEED_PIXBUF                     (1 << 1)
 684 #define NEED_SOLID_MASK                 (1 << 2)
 685
 686 typedef struct
 687 {
 688     pixman_op_t                 op;
 689     pixman_format_code_t        src_format;
 690     pixman_format_code_t        mask_format;
 691     pixman_format_code_t        dest_format;
 692     pixman_composite_func_t     func;
 693     uint32_t                    flags;
 694 } pixman_fast_path_t;
 695
 696 /* Memory allocation helpers */
 697 void *
 698 pixman_malloc_ab (unsigned int n, unsigned int b);
 699
 700 void *
 701 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
 702
 703 pixman_bool_t
 704 pixman_multiply_overflows_int (unsigned int a, unsigned int b);
 705
 706 pixman_bool_t
 707 pixman_addition_overflows_int (unsigned int a, unsigned int b);
 708
 709 /* Compositing utilities */
 710 pixman_bool_t
 711 _pixman_run_fast_path (const pixman_fast_path_t *paths,
 712                        pixman_implementation_t *imp,
 713                        pixman_op_t op,
 714                        pixman_image_t *src,
 715                        pixman_image_t *mask,
 716                        pixman_image_t *dest,
 717                        int32_t src_x,
 718                        int32_t src_y,
 719                        int32_t mask_x,
 720                        int32_t mask_y,
 721                        int32_t dest_x,
 722                        int32_t dest_y,
 723                        int32_t width,
 724                        int32_t height);
 725
 726 void
 727 _pixman_walk_composite_region (pixman_implementation_t *imp,
 728                                pixman_op_t op,
 729                                pixman_image_t * pSrc,
 730                                pixman_image_t * pMask,
 731                                pixman_image_t * pDst,
 732                                int16_t xSrc,
 733                                int16_t ySrc,
 734                                int16_t xMask,
 735                                int16_t yMask,
 736                                int16_t xDst,
 737                                int16_t yDst,
 738                                uint16_t width,
 739                                uint16_t height,
 740                                pixman_composite_func_t compositeRect);
 741
 742 /* Region Helpers */
 743 pixman_bool_t
 744 pixman_region32_copy_from_region16 (pixman_region32_t *dst,
 745                                     pixman_region16_t *src);
 746
 747 pixman_bool_t
 748 pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 749                                     pixman_region32_t *src);
 750
 751
 752 /*
 753  * Various useful macros
 754  */
 755 #ifndef FALSE
 756 #define FALSE 0
 757 #endif
 758
 759 #ifndef TRUE
 760 #define TRUE 1
 761 #endif
 762
 763 /* Integer division that rounds towards -infinity */
 764 #define DIV(a,b) ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
 765                   ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
 766
 767 /* Modulus that produces the remainder wrt. DIV */
 768 #define MOD(a,b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
 769
 770 #define CLIP(a,b,c) ((a) < (b) ? (b) : ((a) > (c) ? (c) : (a)))
 771
 772 #ifndef MIN
 773 #  define MIN(a,b) ((a < b)? a : b)
 774 #endif
 775
 776 #ifndef MAX
 777 #  define MAX(a,b) ((a > b)? a : b)
 778 #endif
 779
 780
 781 #ifdef PIXMAN_TIMERS
 782 /*
 783  * Timers
 784  */
 785
 786 static inline uint64_t
 787 oil_profile_stamp_rdtsc (void)
 788 {
 789     uint64_t ts;
 790     __asm__ __volatile__("rdtsc\n" : "=A" (ts));
 791     return ts;
 792 }
 793 #define OIL_STAMP oil_profile_stamp_rdtsc
 794
 795 typedef struct pixman_timer_t pixman_timer_t;
 796
 797 struct pixman_timer_t
 798 {
 799     int initialized;
 800     const char *name;
 801     uint64_t n_times;
 802     uint64_t total;
 803     pixman_timer_t *next;
 804 };
 805
 806 extern int timer_defined;
 807 void pixman_timer_register (pixman_timer_t *timer);
 808
 809 #define TIMER_BEGIN(tname)                                              \
 810     {                                                                   \
 811         static pixman_timer_t   timer##tname;                           \
 812         uint64_t                begin##tname;                           \
 813                                                                         \
 814         if (!timer##tname.initialized)                                  \
 815         {                                                               \
 816             timer##tname.initialized = 1;                               \
 817             timer##tname.name = #tname;                                 \
 818             pixman_timer_register (&timer##tname);                      \
 819         }                                                               \
 820                                                                         \
 821         timer##tname.n_times++;                                         \
 822         begin##tname = OIL_STAMP();
 823
 824 #define TIMER_END(tname)                                                \
 825         timer##tname.total += OIL_STAMP() - begin##tname;               \
 826     }
 827
 828 #endif /* PIXMAN_TIMERS */
 829
 830 #endif /* PIXMAN_PRIVATE_H */