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 */ 39typedef struct image_common image_common_t; 40typedef struct solid_fill solid_fill_t; 41typedef struct gradient gradient_t; 42typedef struct linear_gradient linear_gradient_t; 43typedef struct horizontal_gradient horizontal_gradient_t; 44typedef struct vertical_gradient vertical_gradient_t; 45typedef struct conical_gradient conical_gradient_t; 46typedef struct radial_gradient radial_gradient_t; 47typedef struct bits_image bits_image_t; 48typedef struct circle circle_t; 49 50typedef struct argb_t argb_t; 51 52struct argb_t 53{ 54 float a; 55 float r; 56 float g; 57 float b; 58}; 59 60typedef 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 67typedef uint32_t (*fetch_pixel_32_t) (bits_image_t *image, 68 int x, 69 int y); 70 71typedef argb_t (*fetch_pixel_float_t) (bits_image_t *image, 72 int x, 73 int y); 74 75typedef void (*store_scanline_t) (bits_image_t * image, 76 int x, 77 int y, 78 int width, 79 const uint32_t *values); 80 81typedef enum 82{ 83 BITS, 84 LINEAR, 85 CONICAL, 86 RADIAL, 87 SOLID 88} image_type_t; 89 90typedef void (*property_changed_func_t) (pixman_image_t *image); 91 92struct 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 123struct 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 132struct gradient 133{ 134 image_common_t common; 135 int n_stops; 136 pixman_gradient_stop_t *stops; 137}; 138 139struct linear_gradient 140{ 141 gradient_t common; 142 pixman_point_fixed_t p1; 143 pixman_point_fixed_t p2; 144}; 145 146struct circle 147{ 148 pixman_fixed_t x; 149 pixman_fixed_t y; 150 pixman_fixed_t radius; 151}; 152 153struct 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 166struct conical_gradient 167{ 168 gradient_t common; 169 pixman_point_fixed_t center; 170 double angle; 171}; 172 173struct 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 197union 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 209typedef struct pixman_iter_t pixman_iter_t; 210typedef uint32_t *(* pixman_iter_get_scanline_t) (pixman_iter_t *iter, const uint32_t *mask); 211typedef void (* pixman_iter_write_back_t) (pixman_iter_t *iter); 212 213typedef 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 237struct 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 258void 259_pixman_bits_image_setup_accessors (bits_image_t *image); 260 261void 262_pixman_bits_image_src_iter_init (pixman_image_t *image, pixman_iter_t *iter); 263 264void 265_pixman_bits_image_dest_iter_init (pixman_image_t *image, pixman_iter_t *iter); 266 267void 268_pixman_linear_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter); 269 270void 271_pixman_radial_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter); 272 273void 274_pixman_conical_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter); 275 276void 277_pixman_image_init (pixman_image_t *image); 278 279pixman_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); 287pixman_bool_t 288_pixman_image_fini (pixman_image_t *image); 289 290pixman_image_t * 291_pixman_image_allocate (void); 292 293pixman_bool_t 294_pixman_init_gradient (gradient_t * gradient, 295 const pixman_gradient_stop_t *stops, 296 int n_stops); 297void 298_pixman_image_reset_clip_region (pixman_image_t *image); 299 300void 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 */ 320typedef 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 336void 337_pixman_gradient_walker_init (pixman_gradient_walker_t *walker, 338 gradient_t * gradient, 339 pixman_repeat_t repeat); 340 341void 342_pixman_gradient_walker_reset (pixman_gradient_walker_t *walker, 343 pixman_fixed_48_16_t pos); 344 345uint32_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 373void 374pixman_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 */ 383typedef struct pixman_implementation_t pixman_implementation_t; 384 385typedef 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 419typedef 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 426typedef 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 433typedef void (*pixman_composite_func_t) (pixman_implementation_t *imp, 434 pixman_composite_info_t *info); 435typedef 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); 448typedef 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); 457typedef pixman_bool_t (*pixman_iter_init_func_t) (pixman_implementation_t *imp, 458 pixman_iter_t *iter); 459 460void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp); 461void _pixman_setup_combiner_functions_float (pixman_implementation_t *imp); 462 463typedef 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 475struct 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 492uint32_t 493_pixman_image_get_solid (pixman_implementation_t *imp, 494 pixman_image_t * image, 495 pixman_format_code_t format); 496 497pixman_implementation_t * 498_pixman_implementation_create (pixman_implementation_t *fallback, 499 const pixman_fast_path_t *fast_paths); 500 501void 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 513pixman_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 519pixman_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 534pixman_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 545pixman_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 557pixman_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 */ 570pixman_implementation_t * 571_pixman_implementation_create_general (void); 572 573pixman_implementation_t * 574_pixman_implementation_create_fast_path (pixman_implementation_t *fallback); 575 576pixman_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 580pixman_implementation_t * 581_pixman_implementation_create_mmx (pixman_implementation_t *fallback); 582#endif 583 584#ifdef USE_SSE2 585pixman_implementation_t * 586_pixman_implementation_create_sse2 (pixman_implementation_t *fallback); 587#endif 588 589#ifdef USE_ARM_SIMD 590pixman_implementation_t * 591_pixman_implementation_create_arm_simd (pixman_implementation_t *fallback); 592#endif 593 594#ifdef USE_ARM_NEON 595pixman_implementation_t * 596_pixman_implementation_create_arm_neon (pixman_implementation_t *fallback); 597#endif 598 599#ifdef USE_MIPS_DSPR2 600pixman_implementation_t * 601_pixman_implementation_create_mips_dspr2 (pixman_implementation_t *fallback); 602#endif 603 604#ifdef USE_VMX 605pixman_implementation_t * 606_pixman_implementation_create_vmx (pixman_implementation_t *fallback); 607#endif 608 609pixman_bool_t 610_pixman_implementation_disabled (const char *name); 611 612pixman_implementation_t * 613_pixman_x86_get_implementations (pixman_implementation_t *imp); 614 615pixman_implementation_t * 616_pixman_arm_get_implementations (pixman_implementation_t *imp); 617 618pixman_implementation_t * 619_pixman_ppc_get_implementations (pixman_implementation_t *imp); 620 621pixman_implementation_t * 622_pixman_mips_get_implementations (pixman_implementation_t *imp); 623 624pixman_implementation_t * 625_pixman_choose_implementation (void); 626 627pixman_bool_t 628_pixman_disabled (const char *name); 629 630 631/* 632 * Utilities 633 */ 634pixman_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); 647uint32_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 755extern pixman_implementation_t *global_implementation; 756 757static force_inline pixman_implementation_t * 758get_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 */ 770PIXMAN_EXPORT pixman_implementation_t * 771_pixman_internal_only_get_implementation (void); 772 773/* Memory allocation helpers */ 774void * 775pixman_malloc_ab (unsigned int n, unsigned int b); 776 777void * 778pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c); 779 780pixman_bool_t 781_pixman_multiply_overflows_size (size_t a, size_t b); 782 783pixman_bool_t 784_pixman_multiply_overflows_int (unsigned int a, unsigned int b); 785 786pixman_bool_t 787_pixman_addition_overflows_int (unsigned int a, unsigned int b); 788 789/* Compositing utilities */ 790void 791pixman_expand_to_float (argb_t *dst, 792 const uint32_t *src, 793 pixman_format_code_t format, 794 int width); 795 796void 797pixman_contract_from_float (uint32_t *dst, 798 const argb_t *src, 799 int width); 800 801/* Region Helpers */ 802pixman_bool_t 803pixman_region32_copy_from_region16 (pixman_region32_t *dst, 804 pixman_region16_t *src); 805 806pixman_bool_t 807pixman_region16_copy_from_region32 (pixman_region16_t *dst, 808 pixman_region32_t *src); 809 810/* Doubly linked lists */ 811typedef struct pixman_link_t pixman_link_t; 812struct pixman_link_t 813{ 814 pixman_link_t *next; 815 pixman_link_t *prev; 816}; 817 818typedef struct pixman_list_t pixman_list_t; 819struct pixman_list_t 820{ 821 pixman_link_t *head; 822 pixman_link_t *tail; 823}; 824 825static force_inline void 826pixman_list_init (pixman_list_t *list) 827{ 828 list->head = (pixman_link_t *)list; 829 list->tail = (pixman_link_t *)list; 830} 831 832static force_inline void 833pixman_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 841static force_inline void 842pixman_list_unlink (pixman_link_t *link) 843{ 844 link->prev->next = link->next; 845 link->next->prev = link->prev; 846} 847 848static force_inline void 849pixman_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 887static force_inline uint16_t 888convert_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 899static force_inline uint32_t 900convert_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 907static force_inline uint32_t 908convert_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 915static force_inline uint32_t 916convert_8888_to_8888 (uint32_t s) 917{ 918 return s; 919} 920 921static force_inline uint32_t 922convert_x888_to_8888 (uint32_t s) 923{ 924 return s | 0xff000000; 925} 926 927static force_inline uint16_t 928convert_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 948static force_inline uint32_t 949unorm_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 991uint16_t pixman_float_to_unorm (float f, int n_bits); 992float 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 1020void 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 1057typedef struct { pixman_fixed_48_16_t v[3]; } pixman_vector_48_16_t; 1058 1059pixman_bool_t 1060pixman_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 1064void 1065pixman_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 1069void 1070pixman_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 1080static inline uint64_t 1081oil_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 1092typedef struct pixman_timer_t pixman_timer_t; 1093 1094struct 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 1103extern int timer_defined; 1104 1105void 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