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