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