1 #include <float.h> 2 3 #ifndef PIXMAN_PRIVATE_H 4 #define PIXMAN_PRIVATE_H 5 6 /* 7 * The defines which are shared between C and assembly code 8 */ 9 10 /* bilinear interpolation precision (must be <= 8) */ 11 #define BILINEAR_INTERPOLATION_BITS 7 12 #define BILINEAR_INTERPOLATION_RANGE (1 << BILINEAR_INTERPOLATION_BITS) 13 14 /* 15 * C specific part 16 */ 17 18 #ifndef __ASSEMBLER__ 19 20 #ifndef PACKAGE 21 # error config.h must be included before pixman-private.h 22 #endif 23 24 #define PIXMAN_DISABLE_DEPRECATED 25 #define PIXMAN_USE_INTERNAL_API 26 27 #include "pixman.h" 28 #include <time.h> 29 #include <assert.h> 30 #include <stdio.h> 31 #include <string.h> 32 #include <stddef.h> 33 34 #include "pixman-compiler.h" 35 36 /* 37 * Images 38 */ 39 typedef struct image_common image_common_t; 40 typedef struct solid_fill solid_fill_t; 41 typedef struct gradient gradient_t; 42 typedef struct linear_gradient linear_gradient_t; 43 typedef struct horizontal_gradient horizontal_gradient_t; 44 typedef struct vertical_gradient vertical_gradient_t; 45 typedef struct conical_gradient conical_gradient_t; 46 typedef struct radial_gradient radial_gradient_t; 47 typedef struct bits_image bits_image_t; 48 typedef struct circle circle_t; 49 50 typedef struct argb_t argb_t; 51 52 struct argb_t 53 { 54 float a; 55 float r; 56 float g; 57 float b; 58 }; 59 60 typedef void (*fetch_scanline_t) (pixman_image_t *image, 61 int x, 62 int y, 63 int width, 64 uint32_t *buffer, 65 const uint32_t *mask); 66 67 typedef uint32_t (*fetch_pixel_32_t) (bits_image_t *image, 68 int x, 69 int y); 70 71 typedef argb_t (*fetch_pixel_float_t) (bits_image_t *image, 72 int x, 73 int y); 74 75 typedef void (*store_scanline_t) (bits_image_t * image, 76 int x, 77 int y, 78 int width, 79 const uint32_t *values); 80 81 typedef enum 82 { 83 BITS, 84 LINEAR, 85 CONICAL, 86 RADIAL, 87 SOLID 88 } image_type_t; 89 90 typedef void (*property_changed_func_t) (pixman_image_t *image); 91 92 struct image_common 93 { 94 image_type_t type; 95 int32_t ref_count; 96 pixman_region32_t clip_region; 97 int32_t alpha_count; /* How many times this image is being used as an alpha map */ 98 pixman_bool_t have_clip_region; /* FALSE if there is no clip */ 99 pixman_bool_t client_clip; /* Whether the source clip was 100 set by a client */ 101 pixman_bool_t clip_sources; /* Whether the clip applies when 102 * the image is used as a source 103 */ 104 pixman_bool_t dirty; 105 pixman_transform_t * transform; 106 pixman_repeat_t repeat; 107 pixman_filter_t filter; 108 pixman_fixed_t * filter_params; 109 int n_filter_params; 110 bits_image_t * alpha_map; 111 int alpha_origin_x; 112 int alpha_origin_y; 113 pixman_bool_t component_alpha; 114 property_changed_func_t property_changed; 115 116 pixman_image_destroy_func_t destroy_func; 117 void * destroy_data; 118 119 uint32_t flags; 120 pixman_format_code_t extended_format_code; 121 }; 122 123 struct solid_fill 124 { 125 image_common_t common; 126 pixman_color_t color; 127 128 uint32_t color_32; 129 argb_t color_float; 130 }; 131 132 struct gradient 133 { 134 image_common_t common; 135 int n_stops; 136 pixman_gradient_stop_t *stops; 137 }; 138 139 struct linear_gradient 140 { 141 gradient_t common; 142 pixman_point_fixed_t p1; 143 pixman_point_fixed_t p2; 144 }; 145 146 struct circle 147 { 148 pixman_fixed_t x; 149 pixman_fixed_t y; 150 pixman_fixed_t radius; 151 }; 152 153 struct radial_gradient 154 { 155 gradient_t common; 156 157 circle_t c1; 158 circle_t c2; 159 160 circle_t delta; 161 double a; 162 double inva; 163 double mindr; 164 }; 165 166 struct conical_gradient 167 { 168 gradient_t common; 169 pixman_point_fixed_t center; 170 double angle; 171 }; 172 173 struct bits_image 174 { 175 image_common_t common; 176 pixman_format_code_t format; 177 const pixman_indexed_t * indexed; 178 int width; 179 int height; 180 uint32_t * bits; 181 uint32_t * free_me; 182 int rowstride; /* in number of uint32_t's */ 183 184 fetch_scanline_t fetch_scanline_32; 185 fetch_pixel_32_t fetch_pixel_32; 186 store_scanline_t store_scanline_32; 187 188 fetch_scanline_t fetch_scanline_float; 189 fetch_pixel_float_t fetch_pixel_float; 190 store_scanline_t store_scanline_float; 191 192 /* Used for indirect access to the bits */ 193 pixman_read_memory_func_t read_func; 194 pixman_write_memory_func_t write_func; 195 }; 196 197 union pixman_image 198 { 199 image_type_t type; 200 image_common_t common; 201 bits_image_t bits; 202 gradient_t gradient; 203 linear_gradient_t linear; 204 conical_gradient_t conical; 205 radial_gradient_t radial; 206 solid_fill_t solid; 207 }; 208 209 typedef struct pixman_iter_t pixman_iter_t; 210 typedef uint32_t *(* pixman_iter_get_scanline_t) (pixman_iter_t *iter, const uint32_t *mask); 211 typedef void (* pixman_iter_write_back_t) (pixman_iter_t *iter); 212 213 typedef enum 214 { 215 ITER_NARROW = (1 << 0), 216 217 /* "Localized alpha" is when the alpha channel is used only to compute 218 * the alpha value of the destination. This means that the computation 219 * of the RGB values of the result is independent of the alpha value. 220 * 221 * For example, the OVER operator has localized alpha for the 222 * destination, because the RGB values of the result can be computed 223 * without knowing the destination alpha. Similarly, ADD has localized 224 * alpha for both source and destination because the RGB values of the 225 * result can be computed without knowing the alpha value of source or 226 * destination. 227 * 228 * When he destination is xRGB, this is useful knowledge, because then 229 * we can treat it as if it were ARGB, which means in some cases we can 230 * avoid copying it to a temporary buffer. 231 */ 232 ITER_LOCALIZED_ALPHA = (1 << 1), 233 ITER_IGNORE_ALPHA = (1 << 2), 234 ITER_IGNORE_RGB = (1 << 3) 235 } iter_flags_t; 236 237 struct pixman_iter_t 238 { 239 /* These are initialized by _pixman_implementation_{src,dest}_init */ 240 pixman_image_t * image; 241 uint32_t * buffer; 242 int x, y; 243 int width; 244 int height; 245 iter_flags_t iter_flags; 246 uint32_t image_flags; 247 248 /* These function pointers are initialized by the implementation */ 249 pixman_iter_get_scanline_t get_scanline; 250 pixman_iter_write_back_t write_back; 251 252 /* These fields are scratch data that implementations can use */ 253 void * data; 254 uint8_t * bits; 255 int stride; 256 }; 257 258 void 259 _pixman_bits_image_setup_accessors (bits_image_t *image); 260 261 void 262 _pixman_bits_image_src_iter_init (pixman_image_t *image, pixman_iter_t *iter); 263 264 void 265 _pixman_bits_image_dest_iter_init (pixman_image_t *image, pixman_iter_t *iter); 266 267 void 268 _pixman_linear_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter); 269 270 void 271 _pixman_radial_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter); 272 273 void 274 _pixman_conical_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter); 275 276 void 277 _pixman_image_init (pixman_image_t *image); 278 279 pixman_bool_t 280 _pixman_bits_image_init (pixman_image_t * image, 281 pixman_format_code_t format, 282 int width, 283 int height, 284 uint32_t * bits, 285 int rowstride, 286 pixman_bool_t clear); 287 pixman_bool_t 288 _pixman_image_fini (pixman_image_t *image); 289 290 pixman_image_t * 291 _pixman_image_allocate (void); 292 293 pixman_bool_t 294 _pixman_init_gradient (gradient_t * gradient, 295 const pixman_gradient_stop_t *stops, 296 int n_stops); 297 void 298 _pixman_image_reset_clip_region (pixman_image_t *image); 299 300 void 301 _pixman_image_validate (pixman_image_t *image); 302 303 #define PIXMAN_IMAGE_GET_LINE(image, x, y, type, out_stride, line, mul) \ 304 do \ 305 { \ 306 uint32_t *__bits__; \ 307 int __stride__; \ 308 \ 309 __bits__ = image->bits.bits; \ 310 __stride__ = image->bits.rowstride; \ 311 (out_stride) = \ 312 __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type); \ 313 (line) = \ 314 ((type *) __bits__) + (out_stride) * (y) + (mul) * (x); \ 315 } while (0) 316 317 /* 318 * Gradient walker 319 */ 320 typedef struct 321 { 322 float a_s, a_b; 323 float r_s, r_b; 324 float g_s, g_b; 325 float b_s, b_b; 326 pixman_fixed_t left_x; 327 pixman_fixed_t right_x; 328 329 pixman_gradient_stop_t *stops; 330 int num_stops; 331 pixman_repeat_t repeat; 332 333 pixman_bool_t need_reset; 334 } pixman_gradient_walker_t; 335 336 void 337 _pixman_gradient_walker_init (pixman_gradient_walker_t *walker, 338 gradient_t * gradient, 339 pixman_repeat_t repeat); 340 341 void 342 _pixman_gradient_walker_reset (pixman_gradient_walker_t *walker, 343 pixman_fixed_48_16_t pos); 344 345 uint32_t 346 _pixman_gradient_walker_pixel (pixman_gradient_walker_t *walker, 347 pixman_fixed_48_16_t x); 348 349 /* 350 * Edges 351 */ 352 353 #define MAX_ALPHA(n) ((1 << (n)) - 1) 354 #define N_Y_FRAC(n) ((n) == 1 ? 1 : (1 << ((n) / 2)) - 1) 355 #define N_X_FRAC(n) ((n) == 1 ? 1 : (1 << ((n) / 2)) + 1) 356 357 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC (n)) 358 #define STEP_Y_BIG(n) (pixman_fixed_1 - (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n)) 359 360 #define Y_FRAC_FIRST(n) (STEP_Y_BIG (n) / 2) 361 #define Y_FRAC_LAST(n) (Y_FRAC_FIRST (n) + (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n)) 362 363 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC (n)) 364 #define STEP_X_BIG(n) (pixman_fixed_1 - (N_X_FRAC (n) - 1) * STEP_X_SMALL (n)) 365 366 #define X_FRAC_FIRST(n) (STEP_X_BIG (n) / 2) 367 #define X_FRAC_LAST(n) (X_FRAC_FIRST (n) + (N_X_FRAC (n) - 1) * STEP_X_SMALL (n)) 368 369 #define RENDER_SAMPLES_X(x, n) \ 370 ((n) == 1? 0 : (pixman_fixed_frac (x) + \ 371 X_FRAC_FIRST (n)) / STEP_X_SMALL (n)) 372 373 void 374 pixman_rasterize_edges_accessors (pixman_image_t *image, 375 pixman_edge_t * l, 376 pixman_edge_t * r, 377 pixman_fixed_t t, 378 pixman_fixed_t b); 379 380 /* 381 * Implementations 382 */ 383 typedef struct pixman_implementation_t pixman_implementation_t; 384 385 typedef struct 386 { 387 pixman_op_t op; 388 pixman_image_t * src_image; 389 pixman_image_t * mask_image; 390 pixman_image_t * dest_image; 391 int32_t src_x; 392 int32_t src_y; 393 int32_t mask_x; 394 int32_t mask_y; 395 int32_t dest_x; 396 int32_t dest_y; 397 int32_t width; 398 int32_t height; 399 400 uint32_t src_flags; 401 uint32_t mask_flags; 402 uint32_t dest_flags; 403 } pixman_composite_info_t; 404 405 #define PIXMAN_COMPOSITE_ARGS(info) \ 406 MAYBE_UNUSED pixman_op_t op = info->op; \ 407 MAYBE_UNUSED pixman_image_t * src_image = info->src_image; \ 408 MAYBE_UNUSED pixman_image_t * mask_image = info->mask_image; \ 409 MAYBE_UNUSED pixman_image_t * dest_image = info->dest_image; \ 410 MAYBE_UNUSED int32_t src_x = info->src_x; \ 411 MAYBE_UNUSED int32_t src_y = info->src_y; \ 412 MAYBE_UNUSED int32_t mask_x = info->mask_x; \ 413 MAYBE_UNUSED int32_t mask_y = info->mask_y; \ 414 MAYBE_UNUSED int32_t dest_x = info->dest_x; \ 415 MAYBE_UNUSED int32_t dest_y = info->dest_y; \ 416 MAYBE_UNUSED int32_t width = info->width; \ 417 MAYBE_UNUSED int32_t height = info->height 418 419 typedef void (*pixman_combine_32_func_t) (pixman_implementation_t *imp, 420 pixman_op_t op, 421 uint32_t * dest, 422 const uint32_t * src, 423 const uint32_t * mask, 424 int width); 425 426 typedef void (*pixman_combine_float_func_t) (pixman_implementation_t *imp, 427 pixman_op_t op, 428 float * dest, 429 const float * src, 430 const float * mask, 431 int n_pixels); 432 433 typedef void (*pixman_composite_func_t) (pixman_implementation_t *imp, 434 pixman_composite_info_t *info); 435 typedef pixman_bool_t (*pixman_blt_func_t) (pixman_implementation_t *imp, 436 uint32_t * src_bits, 437 uint32_t * dst_bits, 438 int src_stride, 439 int dst_stride, 440 int src_bpp, 441 int dst_bpp, 442 int src_x, 443 int src_y, 444 int dest_x, 445 int dest_y, 446 int width, 447 int height); 448 typedef pixman_bool_t (*pixman_fill_func_t) (pixman_implementation_t *imp, 449 uint32_t * bits, 450 int stride, 451 int bpp, 452 int x, 453 int y, 454 int width, 455 int height, 456 uint32_t filler); 457 typedef pixman_bool_t (*pixman_iter_init_func_t) (pixman_implementation_t *imp, 458 pixman_iter_t *iter); 459 460 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp); 461 void _pixman_setup_combiner_functions_float (pixman_implementation_t *imp); 462 463 typedef struct 464 { 465 pixman_op_t op; 466 pixman_format_code_t src_format; 467 uint32_t src_flags; 468 pixman_format_code_t mask_format; 469 uint32_t mask_flags; 470 pixman_format_code_t dest_format; 471 uint32_t dest_flags; 472 pixman_composite_func_t func; 473 } pixman_fast_path_t; 474 475 struct pixman_implementation_t 476 { 477 pixman_implementation_t * toplevel; 478 pixman_implementation_t * fallback; 479 const pixman_fast_path_t * fast_paths; 480 481 pixman_blt_func_t blt; 482 pixman_fill_func_t fill; 483 pixman_iter_init_func_t src_iter_init; 484 pixman_iter_init_func_t dest_iter_init; 485 486 pixman_combine_32_func_t combine_32[PIXMAN_N_OPERATORS]; 487 pixman_combine_32_func_t combine_32_ca[PIXMAN_N_OPERATORS]; 488 pixman_combine_float_func_t combine_float[PIXMAN_N_OPERATORS]; 489 pixman_combine_float_func_t combine_float_ca[PIXMAN_N_OPERATORS]; 490 }; 491 492 uint32_t 493 _pixman_image_get_solid (pixman_implementation_t *imp, 494 pixman_image_t * image, 495 pixman_format_code_t format); 496 497 pixman_implementation_t * 498 _pixman_implementation_create (pixman_implementation_t *fallback, 499 const pixman_fast_path_t *fast_paths); 500 501 void 502 _pixman_implementation_lookup_composite (pixman_implementation_t *toplevel, 503 pixman_op_t op, 504 pixman_format_code_t src_format, 505 uint32_t src_flags, 506 pixman_format_code_t mask_format, 507 uint32_t mask_flags, 508 pixman_format_code_t dest_format, 509 uint32_t dest_flags, 510 pixman_implementation_t **out_imp, 511 pixman_composite_func_t *out_func); 512 513 pixman_combine_32_func_t 514 _pixman_implementation_lookup_combiner (pixman_implementation_t *imp, 515 pixman_op_t op, 516 pixman_bool_t component_alpha, 517 pixman_bool_t wide); 518 519 pixman_bool_t 520 _pixman_implementation_blt (pixman_implementation_t *imp, 521 uint32_t * src_bits, 522 uint32_t * dst_bits, 523 int src_stride, 524 int dst_stride, 525 int src_bpp, 526 int dst_bpp, 527 int src_x, 528 int src_y, 529 int dest_x, 530 int dest_y, 531 int width, 532 int height); 533 534 pixman_bool_t 535 _pixman_implementation_fill (pixman_implementation_t *imp, 536 uint32_t * bits, 537 int stride, 538 int bpp, 539 int x, 540 int y, 541 int width, 542 int height, 543 uint32_t filler); 544 545 pixman_bool_t 546 _pixman_implementation_src_iter_init (pixman_implementation_t *imp, 547 pixman_iter_t *iter, 548 pixman_image_t *image, 549 int x, 550 int y, 551 int width, 552 int height, 553 uint8_t *buffer, 554 iter_flags_t flags, 555 uint32_t image_flags); 556 557 pixman_bool_t 558 _pixman_implementation_dest_iter_init (pixman_implementation_t *imp, 559 pixman_iter_t *iter, 560 pixman_image_t *image, 561 int x, 562 int y, 563 int width, 564 int height, 565 uint8_t *buffer, 566 iter_flags_t flags, 567 uint32_t image_flags); 568 569 /* Specific implementations */ 570 pixman_implementation_t * 571 _pixman_implementation_create_general (void); 572 573 pixman_implementation_t * 574 _pixman_implementation_create_fast_path (pixman_implementation_t *fallback); 575 576 pixman_implementation_t * 577 _pixman_implementation_create_noop (pixman_implementation_t *fallback); 578 579 #if defined USE_X86_MMX || defined USE_ARM_IWMMXT || defined USE_LOONGSON_MMI 580 pixman_implementation_t * 581 _pixman_implementation_create_mmx (pixman_implementation_t *fallback); 582 #endif 583 584 #ifdef USE_SSE2 585 pixman_implementation_t * 586 _pixman_implementation_create_sse2 (pixman_implementation_t *fallback); 587 #endif 588 589 #ifdef USE_ARM_SIMD 590 pixman_implementation_t * 591 _pixman_implementation_create_arm_simd (pixman_implementation_t *fallback); 592 #endif 593 594 #ifdef USE_ARM_NEON 595 pixman_implementation_t * 596 _pixman_implementation_create_arm_neon (pixman_implementation_t *fallback); 597 #endif 598 599 #ifdef USE_MIPS_DSPR2 600 pixman_implementation_t * 601 _pixman_implementation_create_mips_dspr2 (pixman_implementation_t *fallback); 602 #endif 603 604 #ifdef USE_VMX 605 pixman_implementation_t * 606 _pixman_implementation_create_vmx (pixman_implementation_t *fallback); 607 #endif 608 609 pixman_bool_t 610 _pixman_implementation_disabled (const char *name); 611 612 pixman_implementation_t * 613 _pixman_x86_get_implementations (pixman_implementation_t *imp); 614 615 pixman_implementation_t * 616 _pixman_arm_get_implementations (pixman_implementation_t *imp); 617 618 pixman_implementation_t * 619 _pixman_ppc_get_implementations (pixman_implementation_t *imp); 620 621 pixman_implementation_t * 622 _pixman_mips_get_implementations (pixman_implementation_t *imp); 623 624 pixman_implementation_t * 625 _pixman_choose_implementation (void); 626 627 pixman_bool_t 628 _pixman_disabled (const char *name); 629 630 631 /* 632 * Utilities 633 */ 634 pixman_bool_t 635 _pixman_compute_composite_region32 (pixman_region32_t * region, 636 pixman_image_t * src_image, 637 pixman_image_t * mask_image, 638 pixman_image_t * dest_image, 639 int32_t src_x, 640 int32_t src_y, 641 int32_t mask_x, 642 int32_t mask_y, 643 int32_t dest_x, 644 int32_t dest_y, 645 int32_t width, 646 int32_t height); 647 uint32_t * 648 _pixman_iter_get_scanline_noop (pixman_iter_t *iter, const uint32_t *mask); 649 650 /* These "formats" all have depth 0, so they 651 * will never clash with any real ones 652 */ 653 #define PIXMAN_null PIXMAN_FORMAT (0, 0, 0, 0, 0, 0) 654 #define PIXMAN_solid PIXMAN_FORMAT (0, 1, 0, 0, 0, 0) 655 #define PIXMAN_pixbuf PIXMAN_FORMAT (0, 2, 0, 0, 0, 0) 656 #define PIXMAN_rpixbuf PIXMAN_FORMAT (0, 3, 0, 0, 0, 0) 657 #define PIXMAN_unknown PIXMAN_FORMAT (0, 4, 0, 0, 0, 0) 658 #define PIXMAN_any PIXMAN_FORMAT (0, 5, 0, 0, 0, 0) 659 660 #define PIXMAN_OP_any (PIXMAN_N_OPERATORS + 1) 661 662 #define FAST_PATH_ID_TRANSFORM (1 << 0) 663 #define FAST_PATH_NO_ALPHA_MAP (1 << 1) 664 #define FAST_PATH_NO_CONVOLUTION_FILTER (1 << 2) 665 #define FAST_PATH_NO_PAD_REPEAT (1 << 3) 666 #define FAST_PATH_NO_REFLECT_REPEAT (1 << 4) 667 #define FAST_PATH_NO_ACCESSORS (1 << 5) 668 #define FAST_PATH_NARROW_FORMAT (1 << 6) 669 #define FAST_PATH_COMPONENT_ALPHA (1 << 8) 670 #define FAST_PATH_SAMPLES_OPAQUE (1 << 7) 671 #define FAST_PATH_UNIFIED_ALPHA (1 << 9) 672 #define FAST_PATH_SCALE_TRANSFORM (1 << 10) 673 #define FAST_PATH_NEAREST_FILTER (1 << 11) 674 #define FAST_PATH_HAS_TRANSFORM (1 << 12) 675 #define FAST_PATH_IS_OPAQUE (1 << 13) 676 #define FAST_PATH_NO_NORMAL_REPEAT (1 << 14) 677 #define FAST_PATH_NO_NONE_REPEAT (1 << 15) 678 #define FAST_PATH_X_UNIT_POSITIVE (1 << 16) 679 #define FAST_PATH_AFFINE_TRANSFORM (1 << 17) 680 #define FAST_PATH_Y_UNIT_ZERO (1 << 18) 681 #define FAST_PATH_BILINEAR_FILTER (1 << 19) 682 #define FAST_PATH_ROTATE_90_TRANSFORM (1 << 20) 683 #define FAST_PATH_ROTATE_180_TRANSFORM (1 << 21) 684 #define FAST_PATH_ROTATE_270_TRANSFORM (1 << 22) 685 #define FAST_PATH_SAMPLES_COVER_CLIP_NEAREST (1 << 23) 686 #define FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR (1 << 24) 687 #define FAST_PATH_BITS_IMAGE (1 << 25) 688 #define FAST_PATH_SEPARABLE_CONVOLUTION_FILTER (1 << 26) 689 690 #define FAST_PATH_PAD_REPEAT \ 691 (FAST_PATH_NO_NONE_REPEAT | \ 692 FAST_PATH_NO_NORMAL_REPEAT | \ 693 FAST_PATH_NO_REFLECT_REPEAT) 694 695 #define FAST_PATH_NORMAL_REPEAT \ 696 (FAST_PATH_NO_NONE_REPEAT | \ 697 FAST_PATH_NO_PAD_REPEAT | \ 698 FAST_PATH_NO_REFLECT_REPEAT) 699 700 #define FAST_PATH_NONE_REPEAT \ 701 (FAST_PATH_NO_NORMAL_REPEAT | \ 702 FAST_PATH_NO_PAD_REPEAT | \ 703 FAST_PATH_NO_REFLECT_REPEAT) 704 705 #define FAST_PATH_REFLECT_REPEAT \ 706 (FAST_PATH_NO_NONE_REPEAT | \ 707 FAST_PATH_NO_NORMAL_REPEAT | \ 708 FAST_PATH_NO_PAD_REPEAT) 709 710 #define FAST_PATH_STANDARD_FLAGS \ 711 (FAST_PATH_NO_CONVOLUTION_FILTER | \ 712 FAST_PATH_NO_ACCESSORS | \ 713 FAST_PATH_NO_ALPHA_MAP | \ 714 FAST_PATH_NARROW_FORMAT) 715 716 #define FAST_PATH_STD_DEST_FLAGS \ 717 (FAST_PATH_NO_ACCESSORS | \ 718 FAST_PATH_NO_ALPHA_MAP | \ 719 FAST_PATH_NARROW_FORMAT) 720 721 #define SOURCE_FLAGS(format) \ 722 (FAST_PATH_STANDARD_FLAGS | \ 723 ((PIXMAN_ ## format == PIXMAN_solid) ? \ 724 0 : (FAST_PATH_SAMPLES_COVER_CLIP_NEAREST | FAST_PATH_NEAREST_FILTER | FAST_PATH_ID_TRANSFORM))) 725 726 #define MASK_FLAGS(format, extra) \ 727 ((PIXMAN_ ## format == PIXMAN_null) ? 0 : (SOURCE_FLAGS (format) | extra)) 728 729 #define FAST_PATH(op, src, src_flags, mask, mask_flags, dest, dest_flags, func) \ 730 PIXMAN_OP_ ## op, \ 731 PIXMAN_ ## src, \ 732 src_flags, \ 733 PIXMAN_ ## mask, \ 734 mask_flags, \ 735 PIXMAN_ ## dest, \ 736 dest_flags, \ 737 func 738 739 #define PIXMAN_STD_FAST_PATH(op, src, mask, dest, func) \ 740 { FAST_PATH ( \ 741 op, \ 742 src, SOURCE_FLAGS (src), \ 743 mask, MASK_FLAGS (mask, FAST_PATH_UNIFIED_ALPHA), \ 744 dest, FAST_PATH_STD_DEST_FLAGS, \ 745 func) } 746 747 #define PIXMAN_STD_FAST_PATH_CA(op, src, mask, dest, func) \ 748 { FAST_PATH ( \ 749 op, \ 750 src, SOURCE_FLAGS (src), \ 751 mask, MASK_FLAGS (mask, FAST_PATH_COMPONENT_ALPHA), \ 752 dest, FAST_PATH_STD_DEST_FLAGS, \ 753 func) } 754 755 extern pixman_implementation_t *global_implementation; 756 757 static force_inline pixman_implementation_t * 758 get_implementation (void) 759 { 760 #ifndef TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR 761 if (!global_implementation) 762 global_implementation = _pixman_choose_implementation (); 763 #endif 764 return global_implementation; 765 } 766 767 /* This function is exported for the sake of the test suite and not part 768 * of the ABI. 769 */ 770 PIXMAN_EXPORT pixman_implementation_t * 771 _pixman_internal_only_get_implementation (void); 772 773 /* Memory allocation helpers */ 774 void * 775 pixman_malloc_ab (unsigned int n, unsigned int b); 776 777 void * 778 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c); 779 780 pixman_bool_t 781 _pixman_multiply_overflows_size (size_t a, size_t b); 782 783 pixman_bool_t 784 _pixman_multiply_overflows_int (unsigned int a, unsigned int b); 785 786 pixman_bool_t 787 _pixman_addition_overflows_int (unsigned int a, unsigned int b); 788 789 /* Compositing utilities */ 790 void 791 pixman_expand_to_float (argb_t *dst, 792 const uint32_t *src, 793 pixman_format_code_t format, 794 int width); 795 796 void 797 pixman_contract_from_float (uint32_t *dst, 798 const argb_t *src, 799 int width); 800 801 /* Region Helpers */ 802 pixman_bool_t 803 pixman_region32_copy_from_region16 (pixman_region32_t *dst, 804 pixman_region16_t *src); 805 806 pixman_bool_t 807 pixman_region16_copy_from_region32 (pixman_region16_t *dst, 808 pixman_region32_t *src); 809 810 /* Doubly linked lists */ 811 typedef struct pixman_link_t pixman_link_t; 812 struct pixman_link_t 813 { 814 pixman_link_t *next; 815 pixman_link_t *prev; 816 }; 817 818 typedef struct pixman_list_t pixman_list_t; 819 struct pixman_list_t 820 { 821 pixman_link_t *head; 822 pixman_link_t *tail; 823 }; 824 825 static force_inline void 826 pixman_list_init (pixman_list_t *list) 827 { 828 list->head = (pixman_link_t *)list; 829 list->tail = (pixman_link_t *)list; 830 } 831 832 static force_inline void 833 pixman_list_prepend (pixman_list_t *list, pixman_link_t *link) 834 { 835 link->next = list->head; 836 link->prev = (pixman_link_t *)list; 837 list->head->prev = link; 838 list->head = link; 839 } 840 841 static force_inline void 842 pixman_list_unlink (pixman_link_t *link) 843 { 844 link->prev->next = link->next; 845 link->next->prev = link->prev; 846 } 847 848 static force_inline void 849 pixman_list_move_to_front (pixman_list_t *list, pixman_link_t *link) 850 { 851 pixman_list_unlink (link); 852 pixman_list_prepend (list, link); 853 } 854 855 /* Misc macros */ 856 857 #ifndef FALSE 858 # define FALSE 0 859 #endif 860 861 #ifndef TRUE 862 # define TRUE 1 863 #endif 864 865 #ifndef MIN 866 # define MIN(a, b) ((a < b) ? a : b) 867 #endif 868 869 #ifndef MAX 870 # define MAX(a, b) ((a > b) ? a : b) 871 #endif 872 873 /* Integer division that rounds towards -infinity */ 874 #define DIV(a, b) \ 875 ((((a) < 0) == ((b) < 0)) ? (a) / (b) : \ 876 ((a) - (b) + 1 - (((b) < 0) << 1)) / (b)) 877 878 /* Modulus that produces the remainder wrt. DIV */ 879 #define MOD(a, b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b)) 880 881 #define CLIP(v, low, high) ((v) < (low) ? (low) : ((v) > (high) ? (high) : (v))) 882 883 #define FLOAT_IS_ZERO(f) (-FLT_MIN < (f) && (f) < FLT_MIN) 884 885 /* Conversion between 8888 and 0565 */ 886 887 static force_inline uint16_t 888 convert_8888_to_0565 (uint32_t s) 889 { 890 /* The following code can be compiled into just 4 instructions on ARM */ 891 uint32_t a, b; 892 a = (s >> 3) & 0x1F001F; 893 b = s & 0xFC00; 894 a |= a >> 5; 895 a |= b >> 5; 896 return (uint16_t)a; 897 } 898 899 static force_inline uint32_t 900 convert_0565_to_0888 (uint16_t s) 901 { 902 return (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | 903 ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | 904 ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000))); 905 } 906 907 static force_inline uint32_t 908 convert_0565_to_8888 (uint16_t s) 909 { 910 return convert_0565_to_0888 (s) | 0xff000000; 911 } 912 913 /* Trivial versions that are useful in macros */ 914 915 static force_inline uint32_t 916 convert_8888_to_8888 (uint32_t s) 917 { 918 return s; 919 } 920 921 static force_inline uint32_t 922 convert_x888_to_8888 (uint32_t s) 923 { 924 return s | 0xff000000; 925 } 926 927 static force_inline uint16_t 928 convert_0565_to_0565 (uint16_t s) 929 { 930 return s; 931 } 932 933 #define PIXMAN_FORMAT_IS_WIDE(f) \ 934 (PIXMAN_FORMAT_A (f) > 8 || \ 935 PIXMAN_FORMAT_R (f) > 8 || \ 936 PIXMAN_FORMAT_G (f) > 8 || \ 937 PIXMAN_FORMAT_B (f) > 8 || \ 938 PIXMAN_FORMAT_TYPE (f) == PIXMAN_TYPE_ARGB_SRGB) 939 940 #ifdef WORDS_BIGENDIAN 941 # define SCREEN_SHIFT_LEFT(x,n) ((x) << (n)) 942 # define SCREEN_SHIFT_RIGHT(x,n) ((x) >> (n)) 943 #else 944 # define SCREEN_SHIFT_LEFT(x,n) ((x) >> (n)) 945 # define SCREEN_SHIFT_RIGHT(x,n) ((x) << (n)) 946 #endif 947 948 static force_inline uint32_t 949 unorm_to_unorm (uint32_t val, int from_bits, int to_bits) 950 { 951 uint32_t result; 952 953 if (from_bits == 0) 954 return 0; 955 956 /* Delete any extra bits */ 957 val &= ((1 << from_bits) - 1); 958 959 if (from_bits >= to_bits) 960 return val >> (from_bits - to_bits); 961 962 /* Start out with the high bit of val in the high bit of result. */ 963 result = val << (to_bits - from_bits); 964 965 /* Copy the bits in result, doubling the number of bits each time, until 966 * we fill all to_bits. Unrolled manually because from_bits and to_bits 967 * are usually known statically, so the compiler can turn all of this 968 * into a few shifts. 969 */ 970 #define REPLICATE() \ 971 do \ 972 { \ 973 if (from_bits < to_bits) \ 974 { \ 975 result |= result >> from_bits; \ 976 \ 977 from_bits *= 2; \ 978 } \ 979 } \ 980 while (0) 981 982 REPLICATE(); 983 REPLICATE(); 984 REPLICATE(); 985 REPLICATE(); 986 REPLICATE(); 987 988 return result; 989 } 990 991 uint16_t pixman_float_to_unorm (float f, int n_bits); 992 float pixman_unorm_to_float (uint16_t u, int n_bits); 993 994 /* 995 * Various debugging code 996 */ 997 998 #undef DEBUG 999 1000 #define COMPILE_TIME_ASSERT(x) \ 1001 do { typedef int compile_time_assertion [(x)?1:-1]; } while (0) 1002 1003 /* Turn on debugging depending on what type of release this is 1004 */ 1005 #if (((PIXMAN_VERSION_MICRO % 2) == 0) && ((PIXMAN_VERSION_MINOR % 2) == 1)) 1006 1007 /* Debugging gets turned on for development releases because these 1008 * are the things that end up in bleeding edge distributions such 1009 * as Rawhide etc. 1010 * 1011 * For performance reasons we don't turn it on for stable releases or 1012 * random git checkouts. (Random git checkouts are often used for 1013 * performance work). 1014 */ 1015 1016 # define DEBUG 1017 1018 #endif 1019 1020 void 1021 _pixman_log_error (const char *function, const char *message); 1022 1023 #define return_if_fail(expr) \ 1024 do \ 1025 { \ 1026 if (unlikely (!(expr))) \ 1027 { \ 1028 _pixman_log_error (FUNC, "The expression " # expr " was false"); \ 1029 return; \ 1030 } \ 1031 } \ 1032 while (0) 1033 1034 #define return_val_if_fail(expr, retval) \ 1035 do \ 1036 { \ 1037 if (unlikely (!(expr))) \ 1038 { \ 1039 _pixman_log_error (FUNC, "The expression " # expr " was false"); \ 1040 return (retval); \ 1041 } \ 1042 } \ 1043 while (0) 1044 1045 #define critical_if_fail(expr) \ 1046 do \ 1047 { \ 1048 if (unlikely (!(expr))) \ 1049 _pixman_log_error (FUNC, "The expression " # expr " was false"); \ 1050 } \ 1051 while (0) 1052 1053 /* 1054 * Matrix 1055 */ 1056 1057 typedef struct { pixman_fixed_48_16_t v[3]; } pixman_vector_48_16_t; 1058 1059 pixman_bool_t 1060 pixman_transform_point_31_16 (const pixman_transform_t *t, 1061 const pixman_vector_48_16_t *v, 1062 pixman_vector_48_16_t *result); 1063 1064 void 1065 pixman_transform_point_31_16_3d (const pixman_transform_t *t, 1066 const pixman_vector_48_16_t *v, 1067 pixman_vector_48_16_t *result); 1068 1069 void 1070 pixman_transform_point_31_16_affine (const pixman_transform_t *t, 1071 const pixman_vector_48_16_t *v, 1072 pixman_vector_48_16_t *result); 1073 1074 /* 1075 * Timers 1076 */ 1077 1078 #ifdef PIXMAN_TIMERS 1079 1080 static inline uint64_t 1081 oil_profile_stamp_rdtsc (void) 1082 { 1083 uint32_t hi, lo; 1084 1085 __asm__ __volatile__ ("rdtsc\n" : "=a" (lo), "=d" (hi)); 1086 1087 return lo | (((uint64_t)hi) << 32); 1088 } 1089 1090 #define OIL_STAMP oil_profile_stamp_rdtsc 1091 1092 typedef struct pixman_timer_t pixman_timer_t; 1093 1094 struct pixman_timer_t 1095 { 1096 int initialized; 1097 const char * name; 1098 uint64_t n_times; 1099 uint64_t total; 1100 pixman_timer_t *next; 1101 }; 1102 1103 extern int timer_defined; 1104 1105 void pixman_timer_register (pixman_timer_t *timer); 1106 1107 #define TIMER_BEGIN(tname) \ 1108 { \ 1109 static pixman_timer_t timer ## tname; \ 1110 uint64_t begin ## tname; \ 1111 \ 1112 if (!timer ## tname.initialized) \ 1113 { \ 1114 timer ## tname.initialized = 1; \ 1115 timer ## tname.name = # tname; \ 1116 pixman_timer_register (&timer ## tname); \ 1117 } \ 1118 \ 1119 timer ## tname.n_times++; \ 1120 begin ## tname = OIL_STAMP (); 1121 1122 #define TIMER_END(tname) \ 1123 timer ## tname.total += OIL_STAMP () - begin ## tname; \ 1124 } 1125 1126 #else 1127 1128 #define TIMER_BEGIN(tname) 1129 #define TIMER_END(tname) 1130 1131 #endif /* PIXMAN_TIMERS */ 1132 1133 #endif /* __ASSEMBLER__ */ 1134 1135 #endif /* PIXMAN_PRIVATE_H */ 1136
