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  * Various useful macros
  16  */
  17 #ifndef FALSE
  18 #define FALSE 0
  19 #endif
  20
  21 #ifndef TRUE
  22 #define TRUE 1
  23 #endif
  24
  25 /* Integer division that rounds towards -infinity */
  26 #define DIV(a,b) ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
  27                   ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
  28
  29 /* Modulus that produces the remainder wrt. DIV */
  30 #define MOD(a,b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
  31
  32 #define CLIP(a,b,c) ((a) < (b) ? (b) : ((a) > (c) ? (c) : (a)))
  33
  34 #ifndef MIN
  35 #  define MIN(a,b) ((a < b)? a : b)
  36 #endif
  37
  38 #ifndef MAX
  39 #  define MAX(a,b) ((a > b)? a : b)
  40 #endif
  41
  42 #undef DEBUG
  43 #define DEBUG 0
  44
  45 /*
  46  * Utilities
  47  */
  48
  49 /* Memory allocation helpers */
  50 void          *pixman_malloc_ab (unsigned int n, unsigned int b);
  51 void          *pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
  52 pixman_bool_t  pixman_multiply_overflows_int (unsigned int a, unsigned int b);
  53 pixman_bool_t  pixman_addition_overflows_int (unsigned int a, unsigned int b);
  54
  55 #if DEBUG
  56
  57 #define return_if_fail(expr)                                            \
  58     do                                                                  \
  59     {                                                                   \
  60         if (!(expr))                                                    \
  61         {                                                               \
  62             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
  63             return;                                                     \
  64         }                                                               \
  65     }                                                                   \
  66     while (0)
  67
  68 #define return_val_if_fail(expr, retval)                                \
  69     do                                                                  \
  70     {                                                                   \
  71         if (!(expr))                                                    \
  72         {                                                               \
  73             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
  74             return (retval);                                            \
  75         }                                                               \
  76     }                                                                   \
  77     while (0)
  78
  79 #else
  80
  81 #define return_if_fail(expr)                                            \
  82     do                                                                  \
  83     {                                                                   \
  84         if (!(expr))                                                    \
  85             return;                                                     \
  86     }                                                                   \
  87     while (0)
  88
  89 #define return_val_if_fail(expr, retval)                                \
  90     do                                                                  \
  91     {                                                                   \
  92         if (!(expr))                                                    \
  93             return (retval);                                            \
  94     }                                                                   \
  95     while (0)
  96
  97 #endif
  98
  99
 100
 101 typedef struct image_common image_common_t;
 102 typedef struct source_image source_image_t;
 103 typedef struct solid_fill solid_fill_t;
 104 typedef struct gradient gradient_t;
 105 typedef struct linear_gradient linear_gradient_t;
 106 typedef struct horizontal_gradient horizontal_gradient_t;
 107 typedef struct vertical_gradient vertical_gradient_t;
 108 typedef struct conical_gradient conical_gradient_t;
 109 typedef struct radial_gradient radial_gradient_t;
 110 typedef struct bits_image bits_image_t;
 111 typedef struct circle circle_t;
 112 typedef struct point point_t;
 113
 114 /* FIXME - the types and structures below should be give proper names
 115  */
 116
 117 typedef void (*fetchProc32)(bits_image_t *pict, int x, int y, int width,
 118                                      uint32_t *buffer);
 119 typedef uint32_t (*fetchPixelProc32)(bits_image_t *pict, int offset, int line);
 120 typedef void (*storeProc32)(pixman_image_t *, uint32_t *bits,
 121                             const uint32_t *values, int x, int width);
 122
 123 typedef void (*fetchProc64)(bits_image_t *pict, int x, int y, int width,
 124                                      uint64_t *buffer);
 125 typedef uint64_t (*fetchPixelProc64)(bits_image_t *pict, int offset, int line);
 126 typedef void (*storeProc64)(pixman_image_t *, uint32_t *bits,
 127                             const uint64_t *values, int x, int width);
 128
 129 typedef void (* fetch_pixels_32_t) (bits_image_t *image, uint32_t *buffer, int n_pixels);
 130 typedef void (* fetch_pixels_64_t) (bits_image_t *image, uint64_t *buffer, int n_pixels);
 131
 132 void _pixman_bits_image_setup_raw_accessors (bits_image_t *image);
 133
 134 void pixman_expand(uint64_t *dst, const uint32_t *src, pixman_format_code_t, int width);
 135 void pixman_contract(uint32_t *dst, const uint64_t *src, int width);
 136
 137 void _pixman_image_get_scanline_64_generic (pixman_image_t * pict, int x, int y, int width,
 138                                             uint64_t *buffer, uint64_t *mask, uint32_t maskBits);
 139
 140 /* end */
 141
 142 typedef enum
 143 {
 144     BITS,
 145     LINEAR,
 146     CONICAL,
 147     RADIAL,
 148     SOLID
 149 } image_type_t;
 150
 151 typedef enum
 152 {
 153     SOURCE_IMAGE_CLASS_UNKNOWN,
 154     SOURCE_IMAGE_CLASS_HORIZONTAL,
 155     SOURCE_IMAGE_CLASS_VERTICAL,
 156 } source_pict_class_t;
 157
 158 typedef void (*scanStoreProc)(bits_image_t *img, int x, int y, int width, uint32_t *buffer);
 159 typedef void (*scanFetchProc)(pixman_image_t *, int, int, int, uint32_t *,
 160                               uint32_t *, uint32_t);
 161
 162 source_pict_class_t
 163 _pixman_image_classify (pixman_image_t *image,
 164                         int             x,
 165                         int             y,
 166                         int             width,
 167                         int             height);
 168
 169 void
 170 _pixman_image_get_scanline_32 (pixman_image_t *image, int x, int y, int width,
 171                                uint32_t *buffer, uint32_t *mask, uint32_t mask_bits);
 172
 173 /* Even thought the type of buffer is uint32_t *, the function actually expects
 174  * a uint64_t *buffer.
 175  */
 176 void
 177 _pixman_image_get_scanline_64 (pixman_image_t *image, int x, int y, int width,
 178                                uint32_t *buffer, uint32_t *unused, uint32_t unused2);
 179
 180 void
 181 _pixman_image_store_scanline_32 (bits_image_t *image, int x, int y, int width,
 182                                  uint32_t *buffer);
 183 void
 184 _pixman_image_fetch_pixels (bits_image_t *image, uint32_t *buffer, int n_pixels);
 185
 186 /* Even thought the type of buffer is uint32_t *, the function actually expects
 187  * a uint64_t *buffer.
 188  */
 189 void
 190 _pixman_image_store_scanline_64 (bits_image_t *image, int x, int y, int width,
 191                                  uint32_t *buffer);
 192
 193 pixman_image_t *
 194 _pixman_image_allocate (void);
 195
 196 pixman_bool_t
 197 _pixman_init_gradient (gradient_t     *gradient,
 198                        const pixman_gradient_stop_t *stops,
 199                        int             n_stops);
 200 void
 201 _pixman_image_reset_clip_region (pixman_image_t *image);
 202
 203 struct point
 204 {
 205     int16_t x, y;
 206 };
 207
 208 typedef source_pict_class_t (* classify_func_t) (pixman_image_t *image,
 209                                                  int             x,
 210                                                  int             y,
 211                                                  int             width,
 212                                                  int             height);
 213 typedef void (* property_changed_func_t)        (pixman_image_t *image);
 214
 215 struct image_common
 216 {
 217     image_type_t                type;
 218     int32_t                     ref_count;
 219     pixman_region32_t           clip_region;
 220     pixman_bool_t               have_clip_region;       /* FALSE if there is no clip */
 221     pixman_bool_t               client_clip;    /* Whether the source clip was set by a client */
 222     pixman_bool_t               clip_sources;           /* Whether the clip applies when
 223                                                          * the image is used as a source
 224                                                          */
 225     pixman_transform_t         *transform;
 226     pixman_repeat_t             repeat;
 227     pixman_filter_t             filter;
 228     pixman_fixed_t             *filter_params;
 229     int                         n_filter_params;
 230     bits_image_t               *alpha_map;
 231     point_t                     alpha_origin;
 232     pixman_bool_t               component_alpha;
 233     pixman_read_memory_func_t   read_func;
 234     pixman_write_memory_func_t  write_func;
 235     classify_func_t             classify;
 236     property_changed_func_t     property_changed;
 237     scanFetchProc               get_scanline_32;
 238     scanFetchProc               get_scanline_64;
 239
 240     pixman_image_destroy_func_t destroy_func;
 241     void *                      destroy_data;
 242 };
 243
 244 struct source_image
 245 {
 246     image_common_t      common;
 247     source_pict_class_t class;
 248 };
 249
 250 struct solid_fill
 251 {
 252     source_image_t      common;
 253     uint32_t            color;          /* FIXME: shouldn't this be a pixman_color_t? */
 254 };
 255
 256 struct gradient
 257 {
 258     source_image_t              common;
 259     int                         n_stops;
 260     pixman_gradient_stop_t *    stops;
 261     int                         stop_range;
 262     uint32_t *                  color_table;
 263     int                         color_table_size;
 264 };
 265
 266 struct linear_gradient
 267 {
 268     gradient_t                  common;
 269     pixman_point_fixed_t        p1;
 270     pixman_point_fixed_t        p2;
 271 };
 272
 273 struct circle
 274 {
 275     pixman_fixed_t x;
 276     pixman_fixed_t y;
 277     pixman_fixed_t radius;
 278 };
 279
 280 struct radial_gradient
 281 {
 282     gradient_t  common;
 283
 284     circle_t    c1;
 285     circle_t    c2;
 286     double      cdx;
 287     double      cdy;
 288     double      dr;
 289     double      A;
 290 };
 291
 292 struct conical_gradient
 293 {
 294     gradient_t                  common;
 295     pixman_point_fixed_t        center;
 296     pixman_fixed_t              angle;
 297 };
 298
 299 struct bits_image
 300 {
 301     image_common_t              common;
 302     pixman_format_code_t        format;
 303     const pixman_indexed_t     *indexed;
 304     int                         width;
 305     int                         height;
 306     uint32_t *                  bits;
 307     uint32_t *                  free_me;
 308     int                         rowstride; /* in number of uint32_t's */
 309
 310     /* Fetch raw pixels, with no regard for transformations, alpha map etc. */
 311     fetch_pixels_32_t           fetch_pixels_raw_32;
 312     fetch_pixels_64_t           fetch_pixels_raw_64;
 313
 314     /* Fetch raw scanlines, with no regard for transformations, alpha maps etc. */
 315     fetchProc32                 fetch_scanline_raw_32;
 316     fetchProc64                 fetch_scanline_raw_64;
 317
 318     /* Store scanlines with no regard for alpha maps */
 319     storeProc32                 store_scanline_raw_32;
 320     storeProc64                 store_scanline_raw_64;
 321
 322     /* Store a scanline, taking alpha maps into account */
 323     scanStoreProc               store_scanline_32;
 324     scanStoreProc               store_scanline_64;
 325
 326     /* Used for indirect access to the bits */
 327     pixman_read_memory_func_t   read_func;
 328     pixman_write_memory_func_t  write_func;
 329 };
 330
 331 union pixman_image
 332 {
 333     image_type_t                type;
 334     image_common_t              common;
 335     bits_image_t                bits;
 336     source_image_t              source;
 337     gradient_t                  gradient;
 338     linear_gradient_t           linear;
 339     conical_gradient_t          conical;
 340     radial_gradient_t           radial;
 341     solid_fill_t                solid;
 342 };
 343
 344 /*
 345  * Gradient walker
 346  */
 347 typedef struct
 348 {
 349     uint32_t        left_ag;
 350     uint32_t        left_rb;
 351     uint32_t        right_ag;
 352     uint32_t        right_rb;
 353     int32_t       left_x;
 354     int32_t       right_x;
 355     int32_t       stepper;
 356
 357     pixman_gradient_stop_t      *stops;
 358     int                      num_stops;
 359     unsigned int             spread;
 360
 361     int           need_reset;
 362 } pixman_gradient_walker_t;
 363
 364 void
 365 _pixman_gradient_walker_init (pixman_gradient_walker_t  *walker,
 366                               gradient_t      *gradient,
 367                               unsigned int     spread);
 368
 369 void
 370 _pixman_gradient_walker_reset (pixman_gradient_walker_t       *walker,
 371                                pixman_fixed_32_32_t  pos);
 372
 373 uint32_t
 374 _pixman_gradient_walker_pixel (pixman_gradient_walker_t       *walker,
 375                                pixman_fixed_32_32_t  x);
 376
 377
 378
 379 #ifdef WORDS_BIGENDIAN
 380 #define Fetch24(img, a)  ((unsigned long) (a) & 1 ?           \
 381     ((READ(img, a) << 16) | READ(img, (uint16_t *) ((a)+1))) : \
 382     ((READ(img, (uint16_t *) (a)) << 8) | READ(img, (a)+2)))
 383 #define Store24(img,a,v) ((unsigned long) (a) & 1 ? \
 384     (WRITE(img, a, (uint8_t) ((v) >> 16)),                \
 385      WRITE(img, (uint16_t *) ((a)+1), (uint16_t) (v))) :  \
 386     (WRITE(img, (uint16_t *) (a), (uint16_t) ((v) >> 8)), \
 387      WRITE(img, (a)+2, (uint8_t) (v))))
 388 #else
 389 #define Fetch24(img,a)  ((unsigned long) (a) & 1 ?                           \
 390     (READ(img, a) | (READ(img, (uint16_t *) ((a)+1)) << 8)) : \
 391     (READ(img, (uint16_t *) (a)) | (READ(img, (a)+2) << 16)))
 392 #define Store24(img,a,v) ((unsigned long) (a) & 1 ? \
 393     (WRITE(img, a, (uint8_t) (v)),                              \
 394      WRITE(img, (uint16_t *) ((a)+1), (uint16_t) ((v) >> 8))) : \
 395     (WRITE(img, (uint16_t *) (a), (uint16_t) (v)),              \
 396      WRITE(img, (a)+2, (uint8_t) ((v) >> 16))))
 397 #endif
 398
 399 #define FbIntMult(a,b,t) ( (t) = (a) * (b) + 0x80, ( ( ( (t)>>8 ) + (t) )>>8 ) )
 400 #define FbIntDiv(a,b)    (((uint16_t) (a) * 255) / (b))
 401
 402 #define FbGet8(v,i)   ((uint16_t) (uint8_t) ((v) >> i))
 403
 404
 405 #define cvt8888to0565(s)    ((((s) >> 3) & 0x001f) | \
 406                              (((s) >> 5) & 0x07e0) | \
 407                              (((s) >> 8) & 0xf800))
 408 #define cvt0565to0888(s)    (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \
 409                              ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \
 410                              ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
 411
 412 /*
 413  * There are two ways of handling alpha -- either as a single unified value or
 414  * a separate value for each component, hence each macro must have two
 415  * versions.  The unified alpha version has a 'U' at the end of the name,
 416  * the component version has a 'C'.  Similarly, functions which deal with
 417  * this difference will have two versions using the same convention.
 418  */
 419
 420 #define FbOverU(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),(a),(t)) + FbGet8(x,i), \
 421                             (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 422
 423 #define FbOverC(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),FbGet8(a,i),(t)) + FbGet8(x,i), \
 424                             (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 425
 426 #define FbInU(x,i,a,t) ((uint32_t) FbIntMult(FbGet8(x,i),(a),(t)) << (i))
 427
 428 #define FbInC(x,i,a,t) ((uint32_t) FbIntMult(FbGet8(x,i),FbGet8(a,i),(t)) << (i))
 429
 430 #define FbAdd(x,y,i,t)  ((t) = FbGet8(x,i) + FbGet8(y,i),               \
 431                          (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 432
 433 #define div_255(x) (((x) + 0x80 + (((x) + 0x80) >> 8)) >> 8)
 434 #define div_65535(x) (((x) + 0x8000 + (((x) + 0x8000) >> 16)) >> 16)
 435
 436 #ifdef PIXMAN_FB_ACCESSORS
 437
 438 #define ACCESS(sym) sym##_accessors
 439
 440 #define READ(img, ptr)                                                  \
 441     ((img)->common.read_func ((ptr), sizeof(*(ptr))))
 442 #define WRITE(img, ptr,val)                                             \
 443     ((img)->common.write_func ((ptr), (val), sizeof (*(ptr))))
 444
 445 #define MEMCPY_WRAPPED(img, dst, src, size)                             \
 446     do {                                                                \
 447         size_t _i;                                                      \
 448         uint8_t *_dst = (uint8_t*)(dst), *_src = (uint8_t*)(src);       \
 449         for(_i = 0; _i < size; _i++) {                                  \
 450             WRITE((img), _dst +_i, READ((img), _src + _i));             \
 451         }                                                               \
 452     } while (0)
 453
 454 #define MEMSET_WRAPPED(img, dst, val, size)                             \
 455     do {                                                                \
 456         size_t _i;                                                      \
 457         uint8_t *_dst = (uint8_t*)(dst);                                \
 458         for(_i = 0; _i < (size_t) size; _i++) {                         \
 459             WRITE((img), _dst +_i, (val));                              \
 460         }                                                               \
 461     } while (0)
 462
 463 #else
 464
 465 #define ACCESS(sym) sym
 466
 467 #define READ(img, ptr)          (*(ptr))
 468 #define WRITE(img, ptr, val)    (*(ptr) = (val))
 469 #define MEMCPY_WRAPPED(img, dst, src, size)                             \
 470     memcpy(dst, src, size)
 471 #define MEMSET_WRAPPED(img, dst, val, size)                             \
 472     memset(dst, val, size)
 473
 474 #endif
 475
 476 #define fbComposeGetStart(pict,x,y,type,out_stride,line,mul) do {       \
 477         uint32_t        *__bits__;                                      \
 478         int             __stride__;                                     \
 479         int             __bpp__;                                        \
 480                                                                         \
 481         __bits__ = pict->bits.bits;                                     \
 482         __stride__ = pict->bits.rowstride;                              \
 483         __bpp__ = PIXMAN_FORMAT_BPP(pict->bits.format);                 \
 484         (out_stride) = __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type);      \
 485         (line) = ((type *) __bits__) +                                  \
 486             (out_stride) * (y) + (mul) * (x);                           \
 487     } while (0)
 488
 489
 490 #define PIXMAN_FORMAT_16BPC(f)  (PIXMAN_FORMAT_A(f) > 8 || \
 491                                  PIXMAN_FORMAT_R(f) > 8 || \
 492                                  PIXMAN_FORMAT_G(f) > 8 || \
 493                                  PIXMAN_FORMAT_B(f) > 8)
 494 /*
 495  * Edges
 496  */
 497
 498 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 499 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) - 1)
 500 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) + 1)
 501
 502 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC(n))
 503 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 504
 505 #define Y_FRAC_FIRST(n) (STEP_Y_SMALL(n) / 2)
 506 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST(n) + (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 507
 508 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC(n))
 509 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 510
 511 #define X_FRAC_FIRST(n) (STEP_X_SMALL(n) / 2)
 512 #define X_FRAC_LAST(n)  (X_FRAC_FIRST(n) + (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 513
 514 #define RenderSamplesX(x,n)     ((n) == 1 ? 0 : (pixman_fixed_frac (x) + X_FRAC_FIRST(n)) / STEP_X_SMALL(n))
 515
 516 /*
 517  * Step across a small sample grid gap
 518  */
 519 void
 520 pixman_rasterize_edges_accessors (pixman_image_t *image,
 521                                   pixman_edge_t *l,
 522                                   pixman_edge_t *r,
 523                                   pixman_fixed_t        t,
 524                                   pixman_fixed_t        b);
 525
 526 pixman_bool_t
 527 pixman_image_is_opaque(pixman_image_t *image);
 528
 529 pixman_bool_t
 530 pixman_image_is_solid (pixman_image_t *image);
 531
 532 uint32_t
 533 pixman_image_get_solid (pixman_image_t *image,
 534                         pixman_format_code_t format);
 535
 536 pixman_bool_t
 537 pixman_compute_composite_region32 (pixman_region32_t *  pRegion,
 538                                    pixman_image_t *     pSrc,
 539                                    pixman_image_t *     pMask,
 540                                    pixman_image_t *     pDst,
 541                                    int16_t              xSrc,
 542                                    int16_t              ySrc,
 543                                    int16_t              xMask,
 544                                    int16_t              yMask,
 545                                    int16_t              xDst,
 546                                    int16_t              yDst,
 547                                    uint16_t             width,
 548                                    uint16_t             height);
 549
 550 /* Region Helpers */
 551 pixman_bool_t pixman_region32_copy_from_region16 (pixman_region32_t *dst,
 552                                                   pixman_region16_t *src);
 553 pixman_bool_t pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 554                                                   pixman_region32_t *src);
 555
 556 #ifdef PIXMAN_TIMERS
 557
 558 /* Timing */
 559 static inline uint64_t
 560 oil_profile_stamp_rdtsc (void)
 561 {
 562     uint64_t ts;
 563     __asm__ __volatile__("rdtsc\n" : "=A" (ts));
 564     return ts;
 565 }
 566 #define OIL_STAMP oil_profile_stamp_rdtsc
 567
 568 typedef struct pixman_timer_t pixman_timer_t;
 569
 570 struct pixman_timer_t
 571 {
 572     int initialized;
 573     const char *name;
 574     uint64_t n_times;
 575     uint64_t total;
 576     pixman_timer_t *next;
 577 };
 578
 579 extern int timer_defined;
 580 void pixman_timer_register (pixman_timer_t *timer);
 581
 582 #define TIMER_BEGIN(tname)                                              \
 583     {                                                                   \
 584         static pixman_timer_t   timer##tname;                           \
 585         uint64_t                begin##tname;                           \
 586                                                                         \
 587         if (!timer##tname.initialized)                                  \
 588         {                                                               \
 589             timer##tname.initialized = 1;                               \
 590             timer##tname.name = #tname;                                 \
 591             pixman_timer_register (&timer##tname);                      \
 592         }                                                               \
 593                                                                         \
 594         timer##tname.n_times++;                                         \
 595         begin##tname = OIL_STAMP();
 596
 597 #define TIMER_END(tname)                                                \
 598         timer##tname.total += OIL_STAMP() - begin##tname;               \
 599     }
 600
 601 #endif /* PIXMAN_TIMERS */
 602
 603 typedef struct pixman_implementation_t pixman_implementation_t;
 604
 605 typedef void (* pixman_combine_32_func_t) (pixman_implementation_t *    imp,
 606                                            pixman_op_t                  op,
 607                                            uint32_t *                   dest,
 608                                            const uint32_t *             src,
 609                                            const uint32_t *             mask,
 610                                            int                          width);
 611
 612 typedef void (* pixman_combine_64_func_t) (pixman_implementation_t *    imp,
 613                                            pixman_op_t                  op,
 614                                            uint64_t *                   dest,
 615                                            const uint64_t *             src,
 616                                            const uint64_t *             mask,
 617                                            int                          width);
 618
 619 typedef void (* pixman_composite_func_t)  (pixman_implementation_t *    imp,
 620                                            pixman_op_t                  op,
 621                                            pixman_image_t *             src,
 622                                            pixman_image_t *             mask,
 623                                            pixman_image_t *             dest,
 624                                            int32_t                      src_x,
 625                                            int32_t                      src_y,
 626                                            int32_t                      mask_x,
 627                                            int32_t                      mask_y,
 628                                            int32_t                      dest_x,
 629                                            int32_t                      dest_y,
 630                                            int32_t                      width,
 631                                            int32_t                      height);
 632 typedef pixman_bool_t (* pixman_blt_func_t) (pixman_implementation_t *  imp,
 633                                              uint32_t *                 src_bits,
 634                                              uint32_t *                 dst_bits,
 635                                              int                        src_stride,
 636                                              int                        dst_stride,
 637                                              int                        src_bpp,
 638                                              int                        dst_bpp,
 639                                              int                        src_x,
 640                                              int                        src_y,
 641                                              int                        dst_x,
 642                                              int                        dst_y,
 643                                              int                        width,
 644                                              int                        height);
 645 typedef pixman_bool_t (* pixman_fill_func_t) (pixman_implementation_t *imp,
 646                                               uint32_t *bits,
 647                                               int stride,
 648                                               int bpp,
 649                                               int x,
 650                                               int y,
 651                                               int width,
 652                                               int height,
 653                                               uint32_t xor);
 654
 655 void
 656 _pixman_walk_composite_region (pixman_implementation_t *imp,
 657                                pixman_op_t op,
 658                                pixman_image_t * pSrc,
 659                                pixman_image_t * pMask,
 660                                pixman_image_t * pDst,
 661                                int16_t xSrc,
 662                                int16_t ySrc,
 663                                int16_t xMask,
 664                                int16_t yMask,
 665                                int16_t xDst,
 666                                int16_t yDst,
 667                                uint16_t width,
 668                                uint16_t height,
 669                                pixman_composite_func_t compositeRect);
 670
 671 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
 672 void _pixman_setup_combiner_functions_64 (pixman_implementation_t *imp);
 673
 674 /* These "formats" both have depth 0, so they
 675  * will never clash with any real ones
 676  */
 677 #define PIXMAN_null             PIXMAN_FORMAT(0,0,0,0,0,0)
 678 #define PIXMAN_solid            PIXMAN_FORMAT(0,1,0,0,0,0)
 679
 680 #define NEED_COMPONENT_ALPHA            (1 << 0)
 681 #define NEED_PIXBUF                     (1 << 1)
 682 #define NEED_SOLID_MASK                 (1 << 2)
 683
 684 typedef struct
 685 {
 686     pixman_op_t                 op;
 687     pixman_format_code_t        src_format;
 688     pixman_format_code_t        mask_format;
 689     pixman_format_code_t        dest_format;
 690     pixman_composite_func_t     func;
 691     uint32_t                    flags;
 692 } pixman_fast_path_t;
 693
 694 struct pixman_implementation_t
 695 {
 696     pixman_implementation_t *   toplevel;
 697     pixman_implementation_t *   delegate;
 698
 699     pixman_composite_func_t     composite;
 700     pixman_blt_func_t           blt;
 701     pixman_fill_func_t          fill;
 702
 703     pixman_combine_32_func_t    combine_32[PIXMAN_OP_LAST];
 704     pixman_combine_32_func_t    combine_32_ca[PIXMAN_OP_LAST];
 705     pixman_combine_64_func_t    combine_64[PIXMAN_OP_LAST];
 706     pixman_combine_64_func_t    combine_64_ca[PIXMAN_OP_LAST];
 707 };
 708
 709 pixman_implementation_t *
 710 _pixman_implementation_create (pixman_implementation_t *delegate);
 711
 712 void
 713 _pixman_implementation_combine_32 (pixman_implementation_t *    imp,
 714                                    pixman_op_t                  op,
 715                                    uint32_t *                   dest,
 716                                    const uint32_t *             src,
 717                                    const uint32_t *             mask,
 718                                    int                          width);
 719 void
 720 _pixman_implementation_combine_64 (pixman_implementation_t *    imp,
 721                                    pixman_op_t                  op,
 722                                    uint64_t *                   dest,
 723                                    const uint64_t *             src,
 724                                    const uint64_t *             mask,
 725                                    int                          width);
 726 void
 727 _pixman_implementation_combine_32_ca (pixman_implementation_t * imp,
 728                                       pixman_op_t               op,
 729                                       uint32_t *                dest,
 730                                       const uint32_t *          src,
 731                                       const uint32_t *          mask,
 732                                       int                       width);
 733 void
 734 _pixman_implementation_combine_64_ca (pixman_implementation_t * imp,
 735                                       pixman_op_t               op,
 736                                       uint64_t *                dest,
 737                                       const uint64_t *          src,
 738                                       const uint64_t *          mask,
 739                                       int                       width);
 740 void
 741 _pixman_implementation_composite (pixman_implementation_t *     imp,
 742                                   pixman_op_t                   op,
 743                                   pixman_image_t *              src,
 744                                   pixman_image_t *              mask,
 745                                   pixman_image_t *              dest,
 746                                   int32_t                       src_x,
 747                                   int32_t                       src_y,
 748                                   int32_t                       mask_x,
 749                                   int32_t                       mask_y,
 750                                   int32_t                       dest_x,
 751                                   int32_t                       dest_y,
 752                                   int32_t                       width,
 753                                   int32_t                       height);
 754
 755 pixman_bool_t
 756 _pixman_implementation_blt (pixman_implementation_t *   imp,
 757                             uint32_t *                  src_bits,
 758                             uint32_t *                  dst_bits,
 759                             int                         src_stride,
 760                             int                         dst_stride,
 761                             int                         src_bpp,
 762                             int                         dst_bpp,
 763                             int                         src_x,
 764                             int                         src_y,
 765                             int                         dst_x,
 766                             int                         dst_y,
 767                             int                         width,
 768                             int                         height);
 769 pixman_bool_t
 770 _pixman_implementation_fill (pixman_implementation_t *   imp,
 771                              uint32_t *bits,
 772                              int stride,
 773                              int bpp,
 774                              int x,
 775                              int y,
 776                              int width,
 777                              int height,
 778                              uint32_t xor);
 779
 780 /* Specific implementations */
 781 pixman_implementation_t *
 782 _pixman_implementation_create_general (void);
 783 pixman_implementation_t *
 784 _pixman_implementation_create_fast_path (void);
 785 #ifdef USE_MMX
 786 pixman_implementation_t *
 787 _pixman_implementation_create_mmx (void);
 788 #endif
 789 #ifdef USE_SSE2
 790 pixman_implementation_t *
 791 _pixman_implementation_create_sse2 (void);
 792 #endif
 793 #ifdef USE_ARM_SIMD
 794 pixman_implementation_t *
 795 _pixman_implementation_create_arm_simd (void);
 796 #endif
 797 #ifdef USE_ARM_NEON
 798 pixman_implementation_t *
 799 _pixman_implementation_create_arm_neon (void);
 800 #endif
 801 #ifdef USE_VMX
 802 pixman_implementation_t *
 803 _pixman_implementation_create_vmx (void);
 804 #endif
 805
 806 pixman_bool_t
 807 _pixman_run_fast_path (const pixman_fast_path_t *paths,
 808                        pixman_implementation_t *imp,
 809                        pixman_op_t op,
 810                        pixman_image_t *src,
 811                        pixman_image_t *mask,
 812                        pixman_image_t *dest,
 813                        int32_t src_x,
 814                        int32_t src_y,
 815                        int32_t mask_x,
 816                        int32_t mask_y,
 817                        int32_t dest_x,
 818                        int32_t dest_y,
 819                        int32_t width,
 820                        int32_t height);
 821
 822 pixman_implementation_t *
 823 _pixman_choose_implementation (void);
 824
 825 #endif /* PIXMAN_PRIVATE_H */