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
  11 #ifndef FALSE
  12 #define FALSE 0
  13 #endif
  14
  15 #ifndef TRUE
  16 #define TRUE 1
  17 #endif
  18
  19 #define MSBFirst 0
  20 #define LSBFirst 1
  21
  22 #ifdef WORDS_BIGENDIAN
  23 #  define IMAGE_BYTE_ORDER MSBFirst
  24 #  define BITMAP_BIT_ORDER MSBFirst
  25 #else
  26 #  define IMAGE_BYTE_ORDER LSBFirst
  27 #  define BITMAP_BIT_ORDER LSBFirst
  28 #endif
  29
  30 #undef DEBUG
  31 #define DEBUG 0
  32
  33 #if defined (__GNUC__)
  34 #  define FUNC     ((const char*) (__PRETTY_FUNCTION__))
  35 #elif defined (__sun) || (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
  36 #  define FUNC     ((const char*) (__func__))
  37 #else
  38 #  define FUNC     ((const char*) ("???"))
  39 #endif
  40
  41 #ifndef INT16_MIN
  42 # define INT16_MIN              (-32767-1)
  43 #endif
  44
  45 #ifndef INT16_MAX
  46 # define INT16_MAX              (32767)
  47 #endif
  48
  49 #ifndef INT32_MIN
  50 # define INT32_MIN              (-2147483647-1)
  51 #endif
  52
  53 #ifndef INT32_MAX
  54 # define INT32_MAX              (2147483647)
  55 #endif
  56
  57 #ifndef UINT32_MIN
  58 # define UINT32_MIN             (0)
  59 #endif
  60
  61 #ifndef UINT32_MAX
  62 # define UINT32_MAX             (4294967295U)
  63 #endif
  64
  65 #ifndef M_PI
  66 # define M_PI                   3.14159265358979323846
  67 #endif
  68
  69 #ifdef _MSC_VER
  70 /* 'inline' is available only in C++ in MSVC */
  71 #   define inline __inline
  72 #   define force_inline __forceinline
  73 #elif defined __GNUC__ || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
  74 #   define inline __inline__
  75 #   define force_inline __inline__ __attribute__ ((__always_inline__))
  76 #else
  77 # ifndef force_inline
  78 #  define force_inline inline
  79 # endif
  80 #endif
  81
  82 #define FB_SHIFT    5
  83 #define FB_UNIT     (1 << FB_SHIFT)
  84 #define FB_HALFUNIT (1 << (FB_SHIFT-1))
  85 #define FB_MASK     (FB_UNIT - 1)
  86 #define FB_ALLONES  ((uint32_t) -1)
  87
  88 /* Memory allocation helpers */
  89 void *pixman_malloc_ab (unsigned int n, unsigned int b);
  90 void *pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
  91 pixman_bool_t pixman_multiply_overflows_int (unsigned int a, unsigned int b);
  92 pixman_bool_t pixman_addition_overflows_int (unsigned int a, unsigned int b);
  93
  94 #if DEBUG
  95
  96 #define return_if_fail(expr)                                            \
  97     do                                                                  \
  98     {                                                                   \
  99         if (!(expr))                                                    \
 100         {                                                               \
 101             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
 102             return;                                                     \
 103         }                                                               \
 104     }                                                                   \
 105     while (0)
 106
 107 #define return_val_if_fail(expr, retval)                                \
 108     do                                                                  \
 109     {                                                                   \
 110         if (!(expr))                                                    \
 111         {                                                               \
 112             fprintf(stderr, "In %s: %s failed\n", FUNC, #expr);         \
 113             return (retval);                                            \
 114         }                                                               \
 115     }                                                                   \
 116     while (0)
 117
 118 #else
 119
 120 #define return_if_fail(expr)                                            \
 121     do                                                                  \
 122     {                                                                   \
 123         if (!(expr))                                                    \
 124             return;                                                     \
 125     }                                                                   \
 126     while (0)
 127
 128 #define return_val_if_fail(expr, retval)                                \
 129     do                                                                  \
 130     {                                                                   \
 131         if (!(expr))                                                    \
 132             return (retval);                                            \
 133     }                                                                   \
 134     while (0)
 135
 136 #endif
 137
 138 typedef struct image_common image_common_t;
 139 typedef struct source_image source_image_t;
 140 typedef struct solid_fill solid_fill_t;
 141 typedef struct gradient gradient_t;
 142 typedef struct linear_gradient linear_gradient_t;
 143 typedef struct horizontal_gradient horizontal_gradient_t;
 144 typedef struct vertical_gradient vertical_gradient_t;
 145 typedef struct conical_gradient conical_gradient_t;
 146 typedef struct radial_gradient radial_gradient_t;
 147 typedef struct bits_image bits_image_t;
 148 typedef struct circle circle_t;
 149 typedef struct point point_t;
 150
 151 /* FIXME - the types and structures below should be give proper names
 152  */
 153
 154 #define FASTCALL
 155 typedef FASTCALL void (*CombineMaskU32) (uint32_t *src, const uint32_t *mask, int width);
 156 typedef FASTCALL void (*CombineFuncU32) (uint32_t *dest, const uint32_t *src, int width);
 157 typedef FASTCALL void (*CombineFuncC32) (uint32_t *dest, uint32_t *src, uint32_t *mask, int width);
 158 typedef FASTCALL void (*fetchProc32)(bits_image_t *pict, int x, int y, int width,
 159                                      uint32_t *buffer);
 160 typedef FASTCALL uint32_t (*fetchPixelProc32)(bits_image_t *pict, int offset, int line);
 161 typedef FASTCALL void (*storeProc32)(pixman_image_t *, uint32_t *bits,
 162                                      const uint32_t *values, int x, int width,
 163                                      const pixman_indexed_t *);
 164
 165 typedef FASTCALL void (*CombineMaskU64) (uint64_t *src, const uint64_t *mask, int width);
 166 typedef FASTCALL void (*CombineFuncU64) (uint64_t *dest, const uint64_t *src, int width);
 167 typedef FASTCALL void (*CombineFuncC64) (uint64_t *dest, uint64_t *src, uint64_t *mask, int width);
 168 typedef FASTCALL void (*fetchProc64)(bits_image_t *pict, int x, int y, int width,
 169                                      uint64_t *buffer);
 170 typedef FASTCALL uint64_t (*fetchPixelProc64)(bits_image_t *pict, int offset, int line);
 171 typedef FASTCALL void (*storeProc64)(pixman_image_t *, uint32_t *bits,
 172                                      const uint64_t *values, int x, int width,
 173                                      const pixman_indexed_t *);
 174
 175 typedef struct _FbComposeData {
 176     uint8_t      op;
 177     pixman_image_t      *src;
 178     pixman_image_t      *mask;
 179     pixman_image_t      *dest;
 180     int16_t      xSrc;
 181     int16_t      ySrc;
 182     int16_t      xMask;
 183     int16_t      yMask;
 184     int16_t      xDest;
 185     int16_t      yDest;
 186     uint16_t     width;
 187     uint16_t     height;
 188 } FbComposeData;
 189
 190 typedef struct _FbComposeFunctions32 {
 191     CombineFuncU32 *combineU;
 192     CombineFuncC32 *combineC;
 193     CombineMaskU32 combineMaskU;
 194 } FbComposeFunctions32;
 195
 196 typedef struct _FbComposeFunctions64 {
 197     CombineFuncU64 *combineU;
 198     CombineFuncC64 *combineC;
 199     CombineMaskU64 combineMaskU;
 200 } FbComposeFunctions64;
 201
 202 extern FbComposeFunctions32 pixman_composeFunctions;
 203 extern FbComposeFunctions64 pixman_composeFunctions64;
 204
 205 void pixman_composite_rect_general_accessors (const FbComposeData *data,
 206                                               void *src_buffer,
 207                                               void *mask_buffer,
 208                                               void *dest_buffer,
 209                                               const int wide);
 210 void pixman_composite_rect_general (const FbComposeData *data);
 211
 212 fetchProc32 pixman_fetchProcForPicture32 (bits_image_t *);
 213 fetchPixelProc32 pixman_fetchPixelProcForPicture32 (bits_image_t *);
 214 storeProc32 pixman_storeProcForPicture32 (bits_image_t *);
 215 fetchProc32 pixman_fetchProcForPicture32_accessors (bits_image_t *);
 216 fetchPixelProc32 pixman_fetchPixelProcForPicture32_accessors (bits_image_t *);
 217 storeProc32 pixman_storeProcForPicture32_accessors (bits_image_t *);
 218
 219 fetchProc64 pixman_fetchProcForPicture64 (bits_image_t *);
 220 fetchPixelProc64 pixman_fetchPixelProcForPicture64 (bits_image_t *);
 221 storeProc64 pixman_storeProcForPicture64 (bits_image_t *);
 222 fetchProc64 pixman_fetchProcForPicture64_accessors (bits_image_t *);
 223 fetchPixelProc64 pixman_fetchPixelProcForPicture64_accessors (bits_image_t *);
 224 storeProc64 pixman_storeProcForPicture64_accessors (bits_image_t *);
 225
 226 void pixman_expand(uint64_t *dst, const uint32_t *src, pixman_format_code_t, int width);
 227 void pixman_contract(uint32_t *dst, const uint64_t *src, int width);
 228
 229 void pixmanFetchSourcePict(source_image_t *, int x, int y, int width,
 230                            uint32_t *buffer, uint32_t *mask, uint32_t maskBits);
 231 void pixmanFetchSourcePict64(source_image_t *, int x, int y, int width,
 232                              uint64_t *buffer, uint64_t *mask, uint32_t maskBits);
 233
 234 void fbFetchTransformed(bits_image_t *, int x, int y, int width,
 235                         uint32_t *buffer, uint32_t *mask, uint32_t maskBits);
 236 void fbStoreExternalAlpha(bits_image_t *, int x, int y, int width,
 237                           uint32_t *buffer);
 238 void fbFetchExternalAlpha(bits_image_t *, int x, int y, int width,
 239                           uint32_t *buffer, uint32_t *mask, uint32_t maskBits);
 240
 241 void fbFetchTransformed_accessors(bits_image_t *, int x, int y, int width,
 242                                   uint32_t *buffer, uint32_t *mask,
 243                                   uint32_t maskBits);
 244 void fbStoreExternalAlpha_accessors(bits_image_t *, int x, int y, int width,
 245                                     uint32_t *buffer);
 246 void fbFetchExternalAlpha_accessors(bits_image_t *, int x, int y, int width,
 247                                     uint32_t *buffer, uint32_t *mask,
 248                                     uint32_t maskBits);
 249
 250 void fbFetchTransformed64(bits_image_t *, int x, int y, int width,
 251                           uint64_t *buffer, uint64_t *mask, uint32_t maskBits);
 252 void fbStoreExternalAlpha64(bits_image_t *, int x, int y, int width,
 253                             uint64_t *buffer);
 254 void fbFetchExternalAlpha64(bits_image_t *, int x, int y, int width,
 255                             uint64_t *buffer, uint64_t *mask, uint32_t maskBits);
 256
 257 void fbFetchTransformed64_accessors(bits_image_t *, int x, int y, int width,
 258                                     uint64_t *buffer, uint64_t *mask,
 259                                     uint32_t maskBits);
 260 void fbStoreExternalAlpha64_accessors(bits_image_t *, int x, int y, int width,
 261                                       uint64_t *buffer);
 262 void fbFetchExternalAlpha64_accessors(bits_image_t *, int x, int y, int width,
 263                                       uint64_t *buffer, uint64_t *mask,
 264                                       uint32_t maskBits);
 265
 266 /* end */
 267
 268 typedef enum
 269 {
 270     BITS,
 271     LINEAR,
 272     CONICAL,
 273     RADIAL,
 274     SOLID
 275 } image_type_t;
 276
 277 #define IS_SOURCE_IMAGE(img)     (((image_common_t *)img)->type > BITS)
 278
 279 typedef enum
 280 {
 281     SOURCE_IMAGE_CLASS_UNKNOWN,
 282     SOURCE_IMAGE_CLASS_HORIZONTAL,
 283     SOURCE_IMAGE_CLASS_VERTICAL,
 284 } source_pict_class_t;
 285
 286 typedef source_pict_class_t (* classify_func_t) (pixman_image_t *image,
 287                                                  int             x,
 288                                                  int             y,
 289                                                  int             width,
 290                                                  int             height);
 291
 292 typedef void (*scanStoreProc)(pixman_image_t *, int, int, int, uint32_t *);
 293 typedef void (*scanFetchProc)(pixman_image_t *, int, int, int, uint32_t *,
 294                               uint32_t *, uint32_t);
 295
 296 source_pict_class_t _pixman_image_classify (pixman_image_t *image,
 297                                             int             x,
 298                                             int             y,
 299                                             int             width,
 300                                             int             height);
 301
 302 scanFetchProc
 303 _pixman_image_get_fetcher (pixman_image_t *image,
 304                            int             wide);
 305
 306 scanStoreProc
 307 _pixman_image_get_storer (pixman_image_t *image,
 308                           int             wide);
 309
 310 struct point
 311 {
 312     int16_t x, y;
 313 };
 314
 315 struct image_common
 316 {
 317     image_type_t                type;
 318     int32_t                     ref_count;
 319     pixman_region32_t           full_region;
 320     pixman_region32_t           clip_region;
 321     pixman_region32_t          *src_clip;
 322     pixman_bool_t               has_client_clip;
 323     pixman_transform_t         *transform;
 324     pixman_repeat_t             repeat;
 325     pixman_filter_t             filter;
 326     pixman_fixed_t             *filter_params;
 327     int                         n_filter_params;
 328     bits_image_t               *alpha_map;
 329     point_t                     alpha_origin;
 330     pixman_bool_t               component_alpha;
 331     pixman_read_memory_func_t   read_func;
 332     pixman_write_memory_func_t  write_func;
 333     classify_func_t             classify;
 334 };
 335
 336 struct source_image
 337 {
 338     image_common_t      common;
 339     source_pict_class_t class;
 340 };
 341
 342 struct solid_fill
 343 {
 344     source_image_t      common;
 345     uint32_t            color;          /* FIXME: shouldn't this be a pixman_color_t? */
 346 };
 347
 348 struct gradient
 349 {
 350     source_image_t              common;
 351     int                         n_stops;
 352     pixman_gradient_stop_t *    stops;
 353     int                         stop_range;
 354     uint32_t *                  color_table;
 355     int                         color_table_size;
 356 };
 357
 358 struct linear_gradient
 359 {
 360     gradient_t                  common;
 361     pixman_point_fixed_t        p1;
 362     pixman_point_fixed_t        p2;
 363 };
 364
 365 struct circle
 366 {
 367     pixman_fixed_t x;
 368     pixman_fixed_t y;
 369     pixman_fixed_t radius;
 370 };
 371
 372 struct radial_gradient
 373 {
 374     gradient_t  common;
 375
 376     circle_t    c1;
 377     circle_t    c2;
 378     double      cdx;
 379     double      cdy;
 380     double      dr;
 381     double      A;
 382 };
 383
 384 struct conical_gradient
 385 {
 386     gradient_t                  common;
 387     pixman_point_fixed_t        center;
 388     pixman_fixed_t              angle;
 389 };
 390
 391 struct bits_image
 392 {
 393     image_common_t              common;
 394     pixman_format_code_t        format;
 395     const pixman_indexed_t     *indexed;
 396     int                         width;
 397     int                         height;
 398     uint32_t *                  bits;
 399     uint32_t *                  free_me;
 400     int                         rowstride; /* in number of uint32_t's */
 401 };
 402
 403 union pixman_image
 404 {
 405     image_type_t                type;
 406     image_common_t              common;
 407     bits_image_t                bits;
 408     source_image_t              source;
 409     gradient_t                  gradient;
 410     linear_gradient_t           linear;
 411     conical_gradient_t          conical;
 412     radial_gradient_t           radial;
 413     solid_fill_t                solid;
 414 };
 415
 416
 417 #define LOG2_BITMAP_PAD 5
 418 #define FB_STIP_SHIFT   LOG2_BITMAP_PAD
 419 #define FB_STIP_UNIT    (1 << FB_STIP_SHIFT)
 420 #define FB_STIP_MASK    (FB_STIP_UNIT - 1)
 421 #define FB_STIP_ALLONES ((uint32_t) -1)
 422
 423 #if BITMAP_BIT_ORDER == LSBFirst
 424 #define FbScrLeft(x,n)  ((x) >> (n))
 425 #define FbScrRight(x,n) ((x) << (n))
 426 #define FbLeftStipBits(x,n) ((x) & ((((uint32_t) 1) << (n)) - 1))
 427 #else
 428 #define FbScrLeft(x,n)  ((x) << (n))
 429 #define FbScrRight(x,n) ((x) >> (n))
 430 #define FbLeftStipBits(x,n) ((x) >> (FB_STIP_UNIT - (n)))
 431 #endif
 432
 433 #define FbStipLeft(x,n) FbScrLeft(x,n)
 434 #define FbStipRight(x,n) FbScrRight(x,n)
 435 #define FbStipMask(x,w) (FbStipRight(FB_STIP_ALLONES,(x) & FB_STIP_MASK) & \
 436                          FbStipLeft(FB_STIP_ALLONES,(FB_STIP_UNIT - ((x)+(w))) & FB_STIP_MASK))
 437
 438 #define FbLeftMask(x)       ( ((x) & FB_MASK) ? \
 439                               FbScrRight(FB_ALLONES,(x) & FB_MASK) : 0)
 440 #define FbRightMask(x)      ( ((FB_UNIT - (x)) & FB_MASK) ? \
 441                               FbScrLeft(FB_ALLONES,(FB_UNIT - (x)) & FB_MASK) : 0)
 442
 443 #define FbMaskBits(x,w,l,n,r) {                                         \
 444         n = (w); \
 445         r = FbRightMask((x)+n); \
 446         l = FbLeftMask(x); \
 447         if (l) { \
 448             n -= FB_UNIT - ((x) & FB_MASK); \
 449             if (n < 0) { \
 450                 n = 0; \
 451                 l &= r; \
 452                 r = 0; \
 453             } \
 454         } \
 455         n >>= FB_SHIFT; \
 456     }
 457
 458 #if IMAGE_BYTE_ORDER == MSBFirst
 459 #define Fetch24(img, a)  ((unsigned long) (a) & 1 ?           \
 460     ((READ(img, a) << 16) | READ(img, (uint16_t *) ((a)+1))) : \
 461     ((READ(img, (uint16_t *) (a)) << 8) | READ(img, (a)+2)))
 462 #define Store24(img,a,v) ((unsigned long) (a) & 1 ? \
 463     (WRITE(img, a, (uint8_t) ((v) >> 16)),                \
 464      WRITE(img, (uint16_t *) ((a)+1), (uint16_t) (v))) :  \
 465     (WRITE(img, (uint16_t *) (a), (uint16_t) ((v) >> 8)), \
 466      WRITE(img, (a)+2, (uint8_t) (v))))
 467 #else
 468 #define Fetch24(img,a)  ((unsigned long) (a) & 1 ?                           \
 469     (READ(img, a) | (READ(img, (uint16_t *) ((a)+1)) << 8)) : \
 470     (READ(img, (uint16_t *) (a)) | (READ(img, (a)+2) << 16)))
 471 #define Store24(img,a,v) ((unsigned long) (a) & 1 ? \
 472     (WRITE(img, a, (uint8_t) (v)),                              \
 473      WRITE(img, (uint16_t *) ((a)+1), (uint16_t) ((v) >> 8))) : \
 474     (WRITE(img, (uint16_t *) (a), (uint16_t) (v)),              \
 475      WRITE(img, (a)+2, (uint8_t) ((v) >> 16))))
 476 #endif
 477
 478 #define CvtR8G8B8toY15(s)       (((((s) >> 16) & 0xff) * 153 + \
 479                                   (((s) >>  8) & 0xff) * 301 +          \
 480                                   (((s)      ) & 0xff) * 58) >> 2)
 481 #define miCvtR8G8B8to15(s) ((((s) >> 3) & 0x001f) |  \
 482                             (((s) >> 6) & 0x03e0) |  \
 483                             (((s) >> 9) & 0x7c00))
 484 #define miIndexToEnt15(mif,rgb15) ((mif)->ent[rgb15])
 485 #define miIndexToEnt24(mif,rgb24) miIndexToEnt15(mif,miCvtR8G8B8to15(rgb24))
 486
 487 #define miIndexToEntY24(mif,rgb24) ((mif)->ent[CvtR8G8B8toY15(rgb24)])
 488
 489
 490 #define FbIntMult(a,b,t) ( (t) = (a) * (b) + 0x80, ( ( ( (t)>>8 ) + (t) )>>8 ) )
 491 #define FbIntDiv(a,b)    (((uint16_t) (a) * 255) / (b))
 492
 493 #define FbGet8(v,i)   ((uint16_t) (uint8_t) ((v) >> i))
 494
 495
 496 #define cvt8888to0565(s)    ((((s) >> 3) & 0x001f) | \
 497                              (((s) >> 5) & 0x07e0) | \
 498                              (((s) >> 8) & 0xf800))
 499 #define cvt0565to0888(s)    (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \
 500                              ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \
 501                              ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
 502
 503 /*
 504  * There are two ways of handling alpha -- either as a single unified value or
 505  * a separate value for each component, hence each macro must have two
 506  * versions.  The unified alpha version has a 'U' at the end of the name,
 507  * the component version has a 'C'.  Similarly, functions which deal with
 508  * this difference will have two versions using the same convention.
 509  */
 510
 511 #define FbOverU(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),(a),(t)) + FbGet8(x,i), \
 512                             (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 513
 514 #define FbOverC(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),FbGet8(a,i),(t)) + FbGet8(x,i), \
 515                             (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 516
 517 #define FbInU(x,i,a,t) ((uint32_t) FbIntMult(FbGet8(x,i),(a),(t)) << (i))
 518
 519 #define FbInC(x,i,a,t) ((uint32_t) FbIntMult(FbGet8(x,i),FbGet8(a,i),(t)) << (i))
 520
 521 #define FbAdd(x,y,i,t)  ((t) = FbGet8(x,i) + FbGet8(y,i),               \
 522                          (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> 8)))) << (i))
 523
 524 #define div_255(x) (((x) + 0x80 + (((x) + 0x80) >> 8)) >> 8)
 525 #define div_65535(x) (((x) + 0x8000 + (((x) + 0x8000) >> 16)) >> 16)
 526
 527 #define MOD(a,b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
 528
 529 #define DIV(a,b) ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
 530                   ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
 531
 532 #define CLIP(a,b,c) ((a) < (b) ? (b) : ((a) > (c) ? (c) : (a)))
 533
 534 #if 0
 535 /* FIXME: the MOD macro above is equivalent, but faster I think */
 536 #define mod(a,b) ((b) == 1 ? 0 : (a) >= 0 ? (a) % (b) : (b) - (-a) % (b))
 537 #endif
 538
 539 /* FIXME: the (void)__read_func hides lots of warnings (which is what they
 540  * are supposed to do), but some of them are real. For example the one
 541  * where Fetch4 doesn't have a READ
 542  */
 543
 544 #if 0
 545 /* Framebuffer access support macros */
 546 #define ACCESS_MEM(code)                                                \
 547     do {                                                                \
 548         const image_common_t *const com__ =                             \
 549             (image_common_t *)image;                                    \
 550                                                                         \
 551         if (!com__->read_func && !com__->write_func)                    \
 552         {                                                               \
 553             const int do_access__ = 0;                                  \
 554             const pixman_read_memory_func_t read_func__ = NULL;         \
 555             const pixman_write_memory_func_t write_func__ = NULL;       \
 556             (void)read_func__;                                          \
 557             (void)write_func__;                                         \
 558             (void)do_access__;                                          \
 559                                                                         \
 560             {code}                                                      \
 561         }                                                               \
 562         else                                                            \
 563         {                                                               \
 564             const int do_access__ = 1;                                  \
 565             const pixman_read_memory_func_t read_func__ =               \
 566                 com__->read_func;                                       \
 567             const pixman_write_memory_func_t write_func__ =             \
 568                 com__->write_func;                                      \
 569             (void)read_func__;                                          \
 570             (void)write_func__;                                         \
 571             (void)do_access__;                                          \
 572                                                                         \
 573             {code}                                                      \
 574         }                                                               \
 575     } while (0)
 576 #endif
 577
 578 #ifdef PIXMAN_FB_ACCESSORS
 579
 580 #define ACCESS(sym) sym##_accessors
 581
 582 #define READ(img, ptr)                                                  \
 583     ((img)->common.read_func ((ptr), sizeof(*(ptr))))
 584 #define WRITE(img, ptr,val)                                             \
 585     ((img)->common.write_func ((ptr), (val), sizeof (*(ptr))))
 586
 587 #define MEMCPY_WRAPPED(img, dst, src, size)                             \
 588     do {                                                                \
 589         size_t _i;                                                      \
 590         uint8_t *_dst = (uint8_t*)(dst), *_src = (uint8_t*)(src);       \
 591         for(_i = 0; _i < size; _i++) {                                  \
 592             WRITE((img), _dst +_i, READ((img), _src + _i));             \
 593         }                                                               \
 594     } while (0)
 595
 596 #define MEMSET_WRAPPED(img, dst, val, size)                             \
 597     do {                                                                \
 598         size_t _i;                                                      \
 599         uint8_t *_dst = (uint8_t*)(dst);                                \
 600         for(_i = 0; _i < (size_t) size; _i++) {                         \
 601             WRITE((img), _dst +_i, (val));                              \
 602         }                                                               \
 603     } while (0)
 604
 605 #else
 606
 607 #define ACCESS(sym) sym
 608
 609 #define READ(img, ptr)          (*(ptr))
 610 #define WRITE(img, ptr, val)    (*(ptr) = (val))
 611 #define MEMCPY_WRAPPED(img, dst, src, size)                                     \
 612     memcpy(dst, src, size)
 613 #define MEMSET_WRAPPED(img, dst, val, size)                                     \
 614     memset(dst, val, size)
 615
 616 #endif
 617
 618 #define fbComposeGetSolid(img, res, fmt)                                \
 619     do                                                                  \
 620     {                                                                   \
 621         pixman_format_code_t format__;                                  \
 622         if (img->type == SOLID)                                         \
 623         {                                                               \
 624             format__ = PIXMAN_a8r8g8b8;                                 \
 625             (res) = img->solid.color;                                   \
 626         }                                                               \
 627         else                                                            \
 628         {                                                               \
 629             uint32_t           *bits__   = (img)->bits.bits;            \
 630             format__ = (img)->bits.format;                              \
 631                                                                         \
 632             switch (PIXMAN_FORMAT_BPP((img)->bits.format))              \
 633             {                                                           \
 634             case 32:                                                    \
 635                 (res) = READ(img, (uint32_t *)bits__);                  \
 636                 break;                                                  \
 637             case 24:                                                    \
 638                 (res) = Fetch24(img, (uint8_t *) bits__);                       \
 639                 break;                                                  \
 640             case 16:                                                    \
 641                 (res) = READ(img, (uint16_t *) bits__);                 \
 642                 (res) = cvt0565to0888(res);                             \
 643                 break;                                                  \
 644             case 8:                                                     \
 645                 (res) = READ(img, (uint8_t *) bits__);                  \
 646                 (res) = (res) << 24;                                    \
 647                 break;                                                  \
 648             case 1:                                                     \
 649                 (res) = READ(img, (uint32_t *) bits__);                 \
 650                 (res) = FbLeftStipBits((res),1) ? 0xff000000 : 0x00000000; \
 651                 break;                                                  \
 652             default:                                                    \
 653                 return;                                                 \
 654             }                                                           \
 655             /* manage missing src alpha */                              \
 656             if (!PIXMAN_FORMAT_A((img)->bits.format))                   \
 657                 (res) |= 0xff000000;                                    \
 658         }                                                               \
 659                                                                         \
 660         /* If necessary, convert RGB <--> BGR. */                       \
 661         if (PIXMAN_FORMAT_TYPE (format__) != PIXMAN_FORMAT_TYPE(fmt))   \
 662         {                                                               \
 663             (res) = ((((res) & 0xff000000) >>  0) |                     \
 664                      (((res) & 0x00ff0000) >> 16) |                     \
 665                      (((res) & 0x0000ff00) >>  0) |                     \
 666                      (((res) & 0x000000ff) << 16));                     \
 667         }                                                               \
 668     }                                                                   \
 669     while (0)
 670
 671 #define fbComposeGetStart(pict,x,y,type,out_stride,line,mul) do {       \
 672         uint32_t        *__bits__;                                      \
 673         int             __stride__;                                     \
 674         int             __bpp__;                                        \
 675                                                                         \
 676         __bits__ = pict->bits.bits;                                     \
 677         __stride__ = pict->bits.rowstride;                              \
 678         __bpp__ = PIXMAN_FORMAT_BPP(pict->bits.format);                 \
 679         (out_stride) = __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type);      \
 680         (line) = ((type *) __bits__) +                                  \
 681             (out_stride) * (y) + (mul) * (x);                           \
 682     } while (0)
 683
 684
 685 #define PIXMAN_FORMAT_16BPC(f)  (PIXMAN_FORMAT_A(f) > 8 || \
 686                                  PIXMAN_FORMAT_R(f) > 8 || \
 687                                  PIXMAN_FORMAT_G(f) > 8 || \
 688                                  PIXMAN_FORMAT_B(f) > 8)
 689 /*
 690  * Edges
 691  */
 692
 693 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 694 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) - 1)
 695 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n)/2)) + 1)
 696
 697 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC(n))
 698 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 699
 700 #define Y_FRAC_FIRST(n) (STEP_Y_SMALL(n) / 2)
 701 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST(n) + (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
 702
 703 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC(n))
 704 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 705
 706 #define X_FRAC_FIRST(n) (STEP_X_SMALL(n) / 2)
 707 #define X_FRAC_LAST(n)  (X_FRAC_FIRST(n) + (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
 708
 709 #define RenderSamplesX(x,n)     ((n) == 1 ? 0 : (pixman_fixed_frac (x) + X_FRAC_FIRST(n)) / STEP_X_SMALL(n))
 710
 711 /*
 712  * Step across a small sample grid gap
 713  */
 714 #define RenderEdgeStepSmall(edge) { \
 715     edge->x += edge->stepx_small;   \
 716     edge->e += edge->dx_small;      \
 717     if (edge->e > 0)                \
 718     {                               \
 719         edge->e -= edge->dy;        \
 720         edge->x += edge->signdx;    \
 721     }                               \
 722 }
 723
 724 /*
 725  * Step across a large sample grid gap
 726  */
 727 #define RenderEdgeStepBig(edge) {   \
 728     edge->x += edge->stepx_big;     \
 729     edge->e += edge->dx_big;        \
 730     if (edge->e > 0)                \
 731     {                               \
 732         edge->e -= edge->dy;        \
 733         edge->x += edge->signdx;    \
 734     }                               \
 735 }
 736
 737 void
 738 pixman_rasterize_edges_accessors (pixman_image_t *image,
 739                                   pixman_edge_t *l,
 740                                   pixman_edge_t *r,
 741                                   pixman_fixed_t        t,
 742                                   pixman_fixed_t        b);
 743
 744 pixman_bool_t
 745 pixman_image_is_opaque(pixman_image_t *image);
 746
 747 pixman_bool_t
 748 pixman_image_can_get_solid (pixman_image_t *image);
 749
 750 pixman_bool_t
 751 pixman_compute_composite_region32 (pixman_region32_t *  pRegion,
 752                                    pixman_image_t *     pSrc,
 753                                    pixman_image_t *     pMask,
 754                                    pixman_image_t *     pDst,
 755                                    int16_t              xSrc,
 756                                    int16_t              ySrc,
 757                                    int16_t              xMask,
 758                                    int16_t              yMask,
 759                                    int16_t              xDst,
 760                                    int16_t              yDst,
 761                                    uint16_t             width,
 762                                    uint16_t             height);
 763
 764 /* GCC visibility */
 765 #if defined(__GNUC__) && __GNUC__ >= 4
 766 #define PIXMAN_EXPORT __attribute__ ((visibility("default")))
 767 /* Sun Studio 8 visibility */
 768 #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
 769 #define PIXMAN_EXPORT __global
 770 #else
 771 #define PIXMAN_EXPORT
 772 #endif
 773
 774 /* Region Helpers */
 775 pixman_bool_t pixman_region32_copy_from_region16 (pixman_region32_t *dst,
 776                                                   pixman_region16_t *src);
 777 pixman_bool_t pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 778                                                   pixman_region32_t *src);
 779 void pixman_region_internal_set_static_pointers (pixman_box16_t *empty_box,
 780                                                  pixman_region16_data_t *empty_data,
 781                                                  pixman_region16_data_t *broken_data);
 782
 783 #ifdef PIXMAN_TIMING
 784
 785 /* Timing */
 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 PixmanTimer PixmanTimer;
 796
 797 struct PixmanTimer
 798 {
 799     int initialized;
 800     const char *name;
 801     uint64_t n_times;
 802     uint64_t total;
 803     PixmanTimer *next;
 804 };
 805
 806 extern int timer_defined;
 807 void pixman_timer_register (PixmanTimer *timer);
 808
 809 #define TIMER_BEGIN(tname)                                              \
 810     {                                                                   \
 811         static PixmanTimer      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_TIMING */
 829
 830 #endif /* PIXMAN_PRIVATE_H */