?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
beta-0.89.2
[luatex.git] / source / libs / pixman / pixman-src / pixman / pixman-private.h
blob73108a01d32dbbf49021138176e433667e84ae6c
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) (bits_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 typedef void (* pixman_iter_fini_t) (pixman_iter_t *iter);
213
214 typedef enum
215 {
216 ITER_NARROW = (1 << 0),
217 ITER_WIDE = (1 << 1),
218
219 /* "Localized alpha" is when the alpha channel is used only to compute
220 * the alpha value of the destination. This means that the computation
221 * of the RGB values of the result is independent of the alpha value.
222 *
223 * For example, the OVER operator has localized alpha for the
224 * destination, because the RGB values of the result can be computed
225 * without knowing the destination alpha. Similarly, ADD has localized
226 * alpha for both source and destination because the RGB values of the
227 * result can be computed without knowing the alpha value of source or
228 * destination.
229 *
230 * When he destination is xRGB, this is useful knowledge, because then
231 * we can treat it as if it were ARGB, which means in some cases we can
232 * avoid copying it to a temporary buffer.
233 */
234 ITER_LOCALIZED_ALPHA = (1 << 2),
235 ITER_IGNORE_ALPHA = (1 << 3),
236 ITER_IGNORE_RGB = (1 << 4),
237
238 /* These indicate whether the iterator is for a source
239 * or a destination image
240 */
241 ITER_SRC = (1 << 5),
242 ITER_DEST = (1 << 6)
243 } iter_flags_t;
244
245 struct pixman_iter_t
246 {
247 /* These are initialized by _pixman_implementation_{src,dest}_init */
248 pixman_image_t * image;
249 uint32_t * buffer;
250 int x, y;
251 int width;
252 int height;
253 iter_flags_t iter_flags;
254 uint32_t image_flags;
255
256 /* These function pointers are initialized by the implementation */
257 pixman_iter_get_scanline_t get_scanline;
258 pixman_iter_write_back_t write_back;
259 pixman_iter_fini_t fini;
260
261 /* These fields are scratch data that implementations can use */
262 void * data;
263 uint8_t * bits;
264 int stride;
265 };
266
267 typedef struct pixman_iter_info_t pixman_iter_info_t;
268 typedef void (* pixman_iter_initializer_t) (pixman_iter_t *iter,
269 const pixman_iter_info_t *info);
270 struct pixman_iter_info_t
271 {
272 pixman_format_code_t format;
273 uint32_t image_flags;
274 iter_flags_t iter_flags;
275 pixman_iter_initializer_t initializer;
276 pixman_iter_get_scanline_t get_scanline;
277 pixman_iter_write_back_t write_back;
278 };
279
280 void
281 _pixman_bits_image_setup_accessors (bits_image_t *image);
282
283 void
284 _pixman_bits_image_src_iter_init (pixman_image_t *image, pixman_iter_t *iter);
285
286 void
287 _pixman_bits_image_dest_iter_init (pixman_image_t *image, pixman_iter_t *iter);
288
289 void
290 _pixman_linear_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter);
291
292 void
293 _pixman_radial_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter);
294
295 void
296 _pixman_conical_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter);
297
298 void
299 _pixman_image_init (pixman_image_t *image);
300
301 pixman_bool_t
302 _pixman_bits_image_init (pixman_image_t * image,
303 pixman_format_code_t format,
304 int width,
305 int height,
306 uint32_t * bits,
307 int rowstride,
308 pixman_bool_t clear);
309 pixman_bool_t
310 _pixman_image_fini (pixman_image_t *image);
311
312 pixman_image_t *
313 _pixman_image_allocate (void);
314
315 pixman_bool_t
316 _pixman_init_gradient (gradient_t * gradient,
317 const pixman_gradient_stop_t *stops,
318 int n_stops);
319 void
320 _pixman_image_reset_clip_region (pixman_image_t *image);
321
322 void
323 _pixman_image_validate (pixman_image_t *image);
324
325 #define PIXMAN_IMAGE_GET_LINE(image, x, y, type, out_stride, line, mul) \
326 do \
327 { \
328 uint32_t *__bits__; \
329 int __stride__; \
330 \
331 __bits__ = image->bits.bits; \
332 __stride__ = image->bits.rowstride; \
333 (out_stride) = \
334 __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type); \
335 (line) = \
336 ((type *) __bits__) + (out_stride) * (y) + (mul) * (x); \
337 } while (0)
338
339 /*
340 * Gradient walker
341 */
342 typedef struct
343 {
344 float a_s, a_b;
345 float r_s, r_b;
346 float g_s, g_b;
347 float b_s, b_b;
348 pixman_fixed_48_16_t left_x;
349 pixman_fixed_48_16_t right_x;
350
351 pixman_gradient_stop_t *stops;
352 int num_stops;
353 pixman_repeat_t repeat;
354
355 pixman_bool_t need_reset;
356 } pixman_gradient_walker_t;
357
358 void
359 _pixman_gradient_walker_init (pixman_gradient_walker_t *walker,
360 gradient_t * gradient,
361 pixman_repeat_t repeat);
362
363 void
364 _pixman_gradient_walker_reset (pixman_gradient_walker_t *walker,
365 pixman_fixed_48_16_t pos);
366
367 uint32_t
368 _pixman_gradient_walker_pixel (pixman_gradient_walker_t *walker,
369 pixman_fixed_48_16_t x);
370
371 /*
372 * Edges
373 */
374
375 #define MAX_ALPHA(n) ((1 << (n)) - 1)
376 #define N_Y_FRAC(n) ((n) == 1 ? 1 : (1 << ((n) / 2)) - 1)
377 #define N_X_FRAC(n) ((n) == 1 ? 1 : (1 << ((n) / 2)) + 1)
378
379 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC (n))
380 #define STEP_Y_BIG(n) (pixman_fixed_1 - (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
381
382 #define Y_FRAC_FIRST(n) (STEP_Y_BIG (n) / 2)
383 #define Y_FRAC_LAST(n) (Y_FRAC_FIRST (n) + (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
384
385 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC (n))
386 #define STEP_X_BIG(n) (pixman_fixed_1 - (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
387
388 #define X_FRAC_FIRST(n) (STEP_X_BIG (n) / 2)
389 #define X_FRAC_LAST(n) (X_FRAC_FIRST (n) + (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
390
391 #define RENDER_SAMPLES_X(x, n) \
392 ((n) == 1? 0 : (pixman_fixed_frac (x) + \
393 X_FRAC_FIRST (n)) / STEP_X_SMALL (n))
394
395 void
396 pixman_rasterize_edges_accessors (pixman_image_t *image,
397 pixman_edge_t * l,
398 pixman_edge_t * r,
399 pixman_fixed_t t,
400 pixman_fixed_t b);
401
402 /*
403 * Implementations
404 */
405 typedef struct pixman_implementation_t pixman_implementation_t;
406
407 typedef struct
408 {
409 pixman_op_t op;
410 pixman_image_t * src_image;
411 pixman_image_t * mask_image;
412 pixman_image_t * dest_image;
413 int32_t src_x;
414 int32_t src_y;
415 int32_t mask_x;
416 int32_t mask_y;
417 int32_t dest_x;
418 int32_t dest_y;
419 int32_t width;
420 int32_t height;
421
422 uint32_t src_flags;
423 uint32_t mask_flags;
424 uint32_t dest_flags;
425 } pixman_composite_info_t;
426
427 #define PIXMAN_COMPOSITE_ARGS(info) \
428 MAYBE_UNUSED pixman_op_t op = info->op; \
429 MAYBE_UNUSED pixman_image_t * src_image = info->src_image; \
430 MAYBE_UNUSED pixman_image_t * mask_image = info->mask_image; \
431 MAYBE_UNUSED pixman_image_t * dest_image = info->dest_image; \
432 MAYBE_UNUSED int32_t src_x = info->src_x; \
433 MAYBE_UNUSED int32_t src_y = info->src_y; \
434 MAYBE_UNUSED int32_t mask_x = info->mask_x; \
435 MAYBE_UNUSED int32_t mask_y = info->mask_y; \
436 MAYBE_UNUSED int32_t dest_x = info->dest_x; \
437 MAYBE_UNUSED int32_t dest_y = info->dest_y; \
438 MAYBE_UNUSED int32_t width = info->width; \
439 MAYBE_UNUSED int32_t height = info->height
440
441 typedef void (*pixman_combine_32_func_t) (pixman_implementation_t *imp,
442 pixman_op_t op,
443 uint32_t * dest,
444 const uint32_t * src,
445 const uint32_t * mask,
446 int width);
447
448 typedef void (*pixman_combine_float_func_t) (pixman_implementation_t *imp,
449 pixman_op_t op,
450 float * dest,
451 const float * src,
452 const float * mask,
453 int n_pixels);
454
455 typedef void (*pixman_composite_func_t) (pixman_implementation_t *imp,
456 pixman_composite_info_t *info);
457 typedef pixman_bool_t (*pixman_blt_func_t) (pixman_implementation_t *imp,
458 uint32_t * src_bits,
459 uint32_t * dst_bits,
460 int src_stride,
461 int dst_stride,
462 int src_bpp,
463 int dst_bpp,
464 int src_x,
465 int src_y,
466 int dest_x,
467 int dest_y,
468 int width,
469 int height);
470 typedef pixman_bool_t (*pixman_fill_func_t) (pixman_implementation_t *imp,
471 uint32_t * bits,
472 int stride,
473 int bpp,
474 int x,
475 int y,
476 int width,
477 int height,
478 uint32_t filler);
479
480 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
481 void _pixman_setup_combiner_functions_float (pixman_implementation_t *imp);
482
483 typedef struct
484 {
485 pixman_op_t op;
486 pixman_format_code_t src_format;
487 uint32_t src_flags;
488 pixman_format_code_t mask_format;
489 uint32_t mask_flags;
490 pixman_format_code_t dest_format;
491 uint32_t dest_flags;
492 pixman_composite_func_t func;
493 } pixman_fast_path_t;
494
495 struct pixman_implementation_t
496 {
497 pixman_implementation_t * toplevel;
498 pixman_implementation_t * fallback;
499 const pixman_fast_path_t * fast_paths;
500 const pixman_iter_info_t * iter_info;
501
502 pixman_blt_func_t blt;
503 pixman_fill_func_t fill;
504
505 pixman_combine_32_func_t combine_32[PIXMAN_N_OPERATORS];
506 pixman_combine_32_func_t combine_32_ca[PIXMAN_N_OPERATORS];
507 pixman_combine_float_func_t combine_float[PIXMAN_N_OPERATORS];
508 pixman_combine_float_func_t combine_float_ca[PIXMAN_N_OPERATORS];
509 };
510
511 uint32_t
512 _pixman_image_get_solid (pixman_implementation_t *imp,
513 pixman_image_t * image,
514 pixman_format_code_t format);
515
516 pixman_implementation_t *
517 _pixman_implementation_create (pixman_implementation_t *fallback,
518 const pixman_fast_path_t *fast_paths);
519
520 void
521 _pixman_implementation_lookup_composite (pixman_implementation_t *toplevel,
522 pixman_op_t op,
523 pixman_format_code_t src_format,
524 uint32_t src_flags,
525 pixman_format_code_t mask_format,
526 uint32_t mask_flags,
527 pixman_format_code_t dest_format,
528 uint32_t dest_flags,
529 pixman_implementation_t **out_imp,
530 pixman_composite_func_t *out_func);
531
532 pixman_combine_32_func_t
533 _pixman_implementation_lookup_combiner (pixman_implementation_t *imp,
534 pixman_op_t op,
535 pixman_bool_t component_alpha,
536 pixman_bool_t wide);
537
538 pixman_bool_t
539 _pixman_implementation_blt (pixman_implementation_t *imp,
540 uint32_t * src_bits,
541 uint32_t * dst_bits,
542 int src_stride,
543 int dst_stride,
544 int src_bpp,
545 int dst_bpp,
546 int src_x,
547 int src_y,
548 int dest_x,
549 int dest_y,
550 int width,
551 int height);
552
553 pixman_bool_t
554 _pixman_implementation_fill (pixman_implementation_t *imp,
555 uint32_t * bits,
556 int stride,
557 int bpp,
558 int x,
559 int y,
560 int width,
561 int height,
562 uint32_t filler);
563
564 void
565 _pixman_implementation_iter_init (pixman_implementation_t *imp,
566 pixman_iter_t *iter,
567 pixman_image_t *image,
568 int x,
569 int y,
570 int width,
571 int height,
572 uint8_t *buffer,
573 iter_flags_t flags,
574 uint32_t image_flags);
575
576 /* Specific implementations */
577 pixman_implementation_t *
578 _pixman_implementation_create_general (void);
579
580 pixman_implementation_t *
581 _pixman_implementation_create_fast_path (pixman_implementation_t *fallback);
582
583 pixman_implementation_t *
584 _pixman_implementation_create_noop (pixman_implementation_t *fallback);
585
586 #if defined USE_X86_MMX || defined USE_ARM_IWMMXT || defined USE_LOONGSON_MMI
587 pixman_implementation_t *
588 _pixman_implementation_create_mmx (pixman_implementation_t *fallback);
589 #endif
590
591 #ifdef USE_SSE2
592 pixman_implementation_t *
593 _pixman_implementation_create_sse2 (pixman_implementation_t *fallback);
594 #endif
595
596 #ifdef USE_SSSE3
597 pixman_implementation_t *
598 _pixman_implementation_create_ssse3 (pixman_implementation_t *fallback);
599 #endif
600
601 #ifdef USE_ARM_SIMD
602 pixman_implementation_t *
603 _pixman_implementation_create_arm_simd (pixman_implementation_t *fallback);
604 #endif
605
606 #ifdef USE_ARM_NEON
607 pixman_implementation_t *
608 _pixman_implementation_create_arm_neon (pixman_implementation_t *fallback);
609 #endif
610
611 #ifdef USE_MIPS_DSPR2
612 pixman_implementation_t *
613 _pixman_implementation_create_mips_dspr2 (pixman_implementation_t *fallback);
614 #endif
615
616 #ifdef USE_VMX
617 pixman_implementation_t *
618 _pixman_implementation_create_vmx (pixman_implementation_t *fallback);
619 #endif
620
621 pixman_bool_t
622 _pixman_implementation_disabled (const char *name);
623
624 pixman_implementation_t *
625 _pixman_x86_get_implementations (pixman_implementation_t *imp);
626
627 pixman_implementation_t *
628 _pixman_arm_get_implementations (pixman_implementation_t *imp);
629
630 pixman_implementation_t *
631 _pixman_ppc_get_implementations (pixman_implementation_t *imp);
632
633 pixman_implementation_t *
634 _pixman_mips_get_implementations (pixman_implementation_t *imp);
635
636 pixman_implementation_t *
637 _pixman_choose_implementation (void);
638
639 pixman_bool_t
640 _pixman_disabled (const char *name);
641
642
643 /*
644 * Utilities
645 */
646 pixman_bool_t
647 _pixman_compute_composite_region32 (pixman_region32_t * region,
648 pixman_image_t * src_image,
649 pixman_image_t * mask_image,
650 pixman_image_t * dest_image,
651 int32_t src_x,
652 int32_t src_y,
653 int32_t mask_x,
654 int32_t mask_y,
655 int32_t dest_x,
656 int32_t dest_y,
657 int32_t width,
658 int32_t height);
659 uint32_t *
660 _pixman_iter_get_scanline_noop (pixman_iter_t *iter, const uint32_t *mask);
661
662 void
663 _pixman_iter_init_bits_stride (pixman_iter_t *iter, const pixman_iter_info_t *info);
664
665 /* These "formats" all have depth 0, so they
666 * will never clash with any real ones
667 */
668 #define PIXMAN_null PIXMAN_FORMAT (0, 0, 0, 0, 0, 0)
669 #define PIXMAN_solid PIXMAN_FORMAT (0, 1, 0, 0, 0, 0)
670 #define PIXMAN_pixbuf PIXMAN_FORMAT (0, 2, 0, 0, 0, 0)
671 #define PIXMAN_rpixbuf PIXMAN_FORMAT (0, 3, 0, 0, 0, 0)
672 #define PIXMAN_unknown PIXMAN_FORMAT (0, 4, 0, 0, 0, 0)
673 #define PIXMAN_any PIXMAN_FORMAT (0, 5, 0, 0, 0, 0)
674
675 #define PIXMAN_OP_any (PIXMAN_N_OPERATORS + 1)
676
677 #define FAST_PATH_ID_TRANSFORM (1 << 0)
678 #define FAST_PATH_NO_ALPHA_MAP (1 << 1)
679 #define FAST_PATH_NO_CONVOLUTION_FILTER (1 << 2)
680 #define FAST_PATH_NO_PAD_REPEAT (1 << 3)
681 #define FAST_PATH_NO_REFLECT_REPEAT (1 << 4)
682 #define FAST_PATH_NO_ACCESSORS (1 << 5)
683 #define FAST_PATH_NARROW_FORMAT (1 << 6)
684 #define FAST_PATH_COMPONENT_ALPHA (1 << 8)
685 #define FAST_PATH_SAMPLES_OPAQUE (1 << 7)
686 #define FAST_PATH_UNIFIED_ALPHA (1 << 9)
687 #define FAST_PATH_SCALE_TRANSFORM (1 << 10)
688 #define FAST_PATH_NEAREST_FILTER (1 << 11)
689 #define FAST_PATH_HAS_TRANSFORM (1 << 12)
690 #define FAST_PATH_IS_OPAQUE (1 << 13)
691 #define FAST_PATH_NO_NORMAL_REPEAT (1 << 14)
692 #define FAST_PATH_NO_NONE_REPEAT (1 << 15)
693 #define FAST_PATH_X_UNIT_POSITIVE (1 << 16)
694 #define FAST_PATH_AFFINE_TRANSFORM (1 << 17)
695 #define FAST_PATH_Y_UNIT_ZERO (1 << 18)
696 #define FAST_PATH_BILINEAR_FILTER (1 << 19)
697 #define FAST_PATH_ROTATE_90_TRANSFORM (1 << 20)
698 #define FAST_PATH_ROTATE_180_TRANSFORM (1 << 21)
699 #define FAST_PATH_ROTATE_270_TRANSFORM (1 << 22)
700 #define FAST_PATH_SAMPLES_COVER_CLIP_NEAREST (1 << 23)
701 #define FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR (1 << 24)
702 #define FAST_PATH_BITS_IMAGE (1 << 25)
703 #define FAST_PATH_SEPARABLE_CONVOLUTION_FILTER (1 << 26)
704
705 #define FAST_PATH_PAD_REPEAT \
706 (FAST_PATH_NO_NONE_REPEAT | \
707 FAST_PATH_NO_NORMAL_REPEAT | \
708 FAST_PATH_NO_REFLECT_REPEAT)
709
710 #define FAST_PATH_NORMAL_REPEAT \
711 (FAST_PATH_NO_NONE_REPEAT | \
712 FAST_PATH_NO_PAD_REPEAT | \
713 FAST_PATH_NO_REFLECT_REPEAT)
714
715 #define FAST_PATH_NONE_REPEAT \
716 (FAST_PATH_NO_NORMAL_REPEAT | \
717 FAST_PATH_NO_PAD_REPEAT | \
718 FAST_PATH_NO_REFLECT_REPEAT)
719
720 #define FAST_PATH_REFLECT_REPEAT \
721 (FAST_PATH_NO_NONE_REPEAT | \
722 FAST_PATH_NO_NORMAL_REPEAT | \
723 FAST_PATH_NO_PAD_REPEAT)
724
725 #define FAST_PATH_STANDARD_FLAGS \
726 (FAST_PATH_NO_CONVOLUTION_FILTER | \
727 FAST_PATH_NO_ACCESSORS | \
728 FAST_PATH_NO_ALPHA_MAP | \
729 FAST_PATH_NARROW_FORMAT)
730
731 #define FAST_PATH_STD_DEST_FLAGS \
732 (FAST_PATH_NO_ACCESSORS | \
733 FAST_PATH_NO_ALPHA_MAP | \
734 FAST_PATH_NARROW_FORMAT)
735
736 #define SOURCE_FLAGS(format) \
737 (FAST_PATH_STANDARD_FLAGS | \
738 ((PIXMAN_ ## format == PIXMAN_solid) ? \
739 0 : (FAST_PATH_SAMPLES_COVER_CLIP_NEAREST | FAST_PATH_NEAREST_FILTER | FAST_PATH_ID_TRANSFORM)))
740
741 #define MASK_FLAGS(format, extra) \
742 ((PIXMAN_ ## format == PIXMAN_null) ? 0 : (SOURCE_FLAGS (format) | extra))
743
744 #define FAST_PATH(op, src, src_flags, mask, mask_flags, dest, dest_flags, func) \
745 PIXMAN_OP_ ## op, \
746 PIXMAN_ ## src, \
747 src_flags, \
748 PIXMAN_ ## mask, \
749 mask_flags, \
750 PIXMAN_ ## dest, \
751 dest_flags, \
752 func
753
754 #define PIXMAN_STD_FAST_PATH(op, src, mask, dest, func) \
755 { FAST_PATH ( \
756 op, \
757 src, SOURCE_FLAGS (src), \
758 mask, MASK_FLAGS (mask, FAST_PATH_UNIFIED_ALPHA), \
759 dest, FAST_PATH_STD_DEST_FLAGS, \
760 func) }
761
762 #define PIXMAN_STD_FAST_PATH_CA(op, src, mask, dest, func) \
763 { FAST_PATH ( \
764 op, \
765 src, SOURCE_FLAGS (src), \
766 mask, MASK_FLAGS (mask, FAST_PATH_COMPONENT_ALPHA), \
767 dest, FAST_PATH_STD_DEST_FLAGS, \
768 func) }
769
770 extern pixman_implementation_t *global_implementation;
771
772 static force_inline pixman_implementation_t *
773 get_implementation (void)
774 {
775 #ifndef TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR
776 if (!global_implementation)
777 global_implementation = _pixman_choose_implementation ();
778 #endif
779 return global_implementation;
780 }
781
782 /* This function is exported for the sake of the test suite and not part
783 * of the ABI.
784 */
785 PIXMAN_EXPORT pixman_implementation_t *
786 _pixman_internal_only_get_implementation (void);
787
788 /* Memory allocation helpers */
789 void *
790 pixman_malloc_ab (unsigned int n, unsigned int b);
791
792 void *
793 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
794
795 void *
796 pixman_malloc_ab_plus_c (unsigned int a, unsigned int b, unsigned int c);
797
798 pixman_bool_t
799 _pixman_multiply_overflows_size (size_t a, size_t b);
800
801 pixman_bool_t
802 _pixman_multiply_overflows_int (unsigned int a, unsigned int b);
803
804 pixman_bool_t
805 _pixman_addition_overflows_int (unsigned int a, unsigned int b);
806
807 /* Compositing utilities */
808 void
809 pixman_expand_to_float (argb_t *dst,
810 const uint32_t *src,
811 pixman_format_code_t format,
812 int width);
813
814 void
815 pixman_contract_from_float (uint32_t *dst,
816 const argb_t *src,
817 int width);
818
819 /* Region Helpers */
820 pixman_bool_t
821 pixman_region32_copy_from_region16 (pixman_region32_t *dst,
822 pixman_region16_t *src);
823
824 pixman_bool_t
825 pixman_region16_copy_from_region32 (pixman_region16_t *dst,
826 pixman_region32_t *src);
827
828 /* Doubly linked lists */
829 typedef struct pixman_link_t pixman_link_t;
830 struct pixman_link_t
831 {
832 pixman_link_t *next;
833 pixman_link_t *prev;
834 };
835
836 typedef struct pixman_list_t pixman_list_t;
837 struct pixman_list_t
838 {
839 pixman_link_t *head;
840 pixman_link_t *tail;
841 };
842
843 static force_inline void
844 pixman_list_init (pixman_list_t *list)
845 {
846 list->head = (pixman_link_t *)list;
847 list->tail = (pixman_link_t *)list;
848 }
849
850 static force_inline void
851 pixman_list_prepend (pixman_list_t *list, pixman_link_t *link)
852 {
853 link->next = list->head;
854 link->prev = (pixman_link_t *)list;
855 list->head->prev = link;
856 list->head = link;
857 }
858
859 static force_inline void
860 pixman_list_unlink (pixman_link_t *link)
861 {
862 link->prev->next = link->next;
863 link->next->prev = link->prev;
864 }
865
866 static force_inline void
867 pixman_list_move_to_front (pixman_list_t *list, pixman_link_t *link)
868 {
869 pixman_list_unlink (link);
870 pixman_list_prepend (list, link);
871 }
872
873 /* Misc macros */
874
875 #ifndef FALSE
876 # define FALSE 0
877 #endif
878
879 #ifndef TRUE
880 # define TRUE 1
881 #endif
882
883 #ifndef MIN
884 # define MIN(a, b) ((a < b) ? a : b)
885 #endif
886
887 #ifndef MAX
888 # define MAX(a, b) ((a > b) ? a : b)
889 #endif
890
891 /* Integer division that rounds towards -infinity */
892 #define DIV(a, b) \
893 ((((a) < 0) == ((b) < 0)) ? (a) / (b) : \
894 ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
895
896 /* Modulus that produces the remainder wrt. DIV */
897 #define MOD(a, b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
898
899 #define CLIP(v, low, high) ((v) < (low) ? (low) : ((v) > (high) ? (high) : (v)))
900
901 #define FLOAT_IS_ZERO(f) (-FLT_MIN < (f) && (f) < FLT_MIN)
902
903 /* Conversion between 8888 and 0565 */
904
905 static force_inline uint16_t
906 convert_8888_to_0565 (uint32_t s)
907 {
908 /* The following code can be compiled into just 4 instructions on ARM */
909 uint32_t a, b;
910 a = (s >> 3) & 0x1F001F;
911 b = s & 0xFC00;
912 a |= a >> 5;
913 a |= b >> 5;
914 return (uint16_t)a;
915 }
916
917 static force_inline uint32_t
918 convert_0565_to_0888 (uint16_t s)
919 {
920 return (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) |
921 ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) |
922 ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)));
923 }
924
925 static force_inline uint32_t
926 convert_0565_to_8888 (uint16_t s)
927 {
928 return convert_0565_to_0888 (s) | 0xff000000;
929 }
930
931 /* Trivial versions that are useful in macros */
932
933 static force_inline uint32_t
934 convert_8888_to_8888 (uint32_t s)
935 {
936 return s;
937 }
938
939 static force_inline uint32_t
940 convert_x888_to_8888 (uint32_t s)
941 {
942 return s | 0xff000000;
943 }
944
945 static force_inline uint16_t
946 convert_0565_to_0565 (uint16_t s)
947 {
948 return s;
949 }
950
951 #define PIXMAN_FORMAT_IS_WIDE(f) \
952 (PIXMAN_FORMAT_A (f) > 8 || \
953 PIXMAN_FORMAT_R (f) > 8 || \
954 PIXMAN_FORMAT_G (f) > 8 || \
955 PIXMAN_FORMAT_B (f) > 8 || \
956 PIXMAN_FORMAT_TYPE (f) == PIXMAN_TYPE_ARGB_SRGB)
957
958 #ifdef WORDS_BIGENDIAN
959 # define SCREEN_SHIFT_LEFT(x,n) ((x) << (n))
960 # define SCREEN_SHIFT_RIGHT(x,n) ((x) >> (n))
961 #else
962 # define SCREEN_SHIFT_LEFT(x,n) ((x) >> (n))
963 # define SCREEN_SHIFT_RIGHT(x,n) ((x) << (n))
964 #endif
965
966 static force_inline uint32_t
967 unorm_to_unorm (uint32_t val, int from_bits, int to_bits)
968 {
969 uint32_t result;
970
971 if (from_bits == 0)
972 return 0;
973
974 /* Delete any extra bits */
975 val &= ((1 << from_bits) - 1);
976
977 if (from_bits >= to_bits)
978 return val >> (from_bits - to_bits);
979
980 /* Start out with the high bit of val in the high bit of result. */
981 result = val << (to_bits - from_bits);
982
983 /* Copy the bits in result, doubling the number of bits each time, until
984 * we fill all to_bits. Unrolled manually because from_bits and to_bits
985 * are usually known statically, so the compiler can turn all of this
986 * into a few shifts.
987 */
988 #define REPLICATE() \
989 do \
990 { \
991 if (from_bits < to_bits) \
992 { \
993 result |= result >> from_bits; \
994 \
995 from_bits *= 2; \
996 } \
997 } \
998 while (0)
999
1000 REPLICATE();
1001 REPLICATE();
1002 REPLICATE();
1003 REPLICATE();
1004 REPLICATE();
1005
1006 return result;
1007 }
1008
1009 uint16_t pixman_float_to_unorm (float f, int n_bits);
1010 float pixman_unorm_to_float (uint16_t u, int n_bits);
1011
1012 /*
1013 * Various debugging code
1014 */
1015
1016 #undef DEBUG
1017
1018 #define COMPILE_TIME_ASSERT(x) \
1019 do { typedef int compile_time_assertion [(x)?1:-1]; } while (0)
1020
1021 /* Turn on debugging depending on what type of release this is
1022 */
1023 #if (((PIXMAN_VERSION_MICRO % 2) == 0) && ((PIXMAN_VERSION_MINOR % 2) == 1))
1024
1025 /* Debugging gets turned on for development releases because these
1026 * are the things that end up in bleeding edge distributions such
1027 * as Rawhide etc.
1028 *
1029 * For performance reasons we don't turn it on for stable releases or
1030 * random git checkouts. (Random git checkouts are often used for
1031 * performance work).
1032 */
1033
1034 # define DEBUG
1035
1036 #endif
1037
1038 void
1039 _pixman_log_error (const char *function, const char *message);
1040
1041 #define return_if_fail(expr) \
1042 do \
1043 { \
1044 if (unlikely (!(expr))) \
1045 { \
1046 _pixman_log_error (FUNC, "The expression " # expr " was false"); \
1047 return; \
1048 } \
1049 } \
1050 while (0)
1051
1052 #define return_val_if_fail(expr, retval) \
1053 do \
1054 { \
1055 if (unlikely (!(expr))) \
1056 { \
1057 _pixman_log_error (FUNC, "The expression " # expr " was false"); \
1058 return (retval); \
1059 } \
1060 } \
1061 while (0)
1062
1063 #define critical_if_fail(expr) \
1064 do \
1065 { \
1066 if (unlikely (!(expr))) \
1067 _pixman_log_error (FUNC, "The expression " # expr " was false"); \
1068 } \
1069 while (0)
1070
1071 /*
1072 * Matrix
1073 */
1074
1075 typedef struct { pixman_fixed_48_16_t v[3]; } pixman_vector_48_16_t;
1076
1077 pixman_bool_t
1078 pixman_transform_point_31_16 (const pixman_transform_t *t,
1079 const pixman_vector_48_16_t *v,
1080 pixman_vector_48_16_t *result);
1081
1082 void
1083 pixman_transform_point_31_16_3d (const pixman_transform_t *t,
1084 const pixman_vector_48_16_t *v,
1085 pixman_vector_48_16_t *result);
1086
1087 void
1088 pixman_transform_point_31_16_affine (const pixman_transform_t *t,
1089 const pixman_vector_48_16_t *v,
1090 pixman_vector_48_16_t *result);
1091
1092 /*
1093 * Timers
1094 */
1095
1096 #ifdef PIXMAN_TIMERS
1097
1098 static inline uint64_t
1099 oil_profile_stamp_rdtsc (void)
1100 {
1101 uint32_t hi, lo;
1102
1103 __asm__ __volatile__ ("rdtsc\n" : "=a" (lo), "=d" (hi));
1104
1105 return lo | (((uint64_t)hi) << 32);
1106 }
1107
1108 #define OIL_STAMP oil_profile_stamp_rdtsc
1109
1110 typedef struct pixman_timer_t pixman_timer_t;
1111
1112 struct pixman_timer_t
1113 {
1114 int initialized;
1115 const char * name;
1116 uint64_t n_times;
1117 uint64_t total;
1118 pixman_timer_t *next;
1119 };
1120
1121 extern int timer_defined;
1122
1123 void pixman_timer_register (pixman_timer_t *timer);
1124
1125 #define TIMER_BEGIN(tname) \
1126 { \
1127 static pixman_timer_t timer ## tname; \
1128 uint64_t begin ## tname; \
1129 \
1130 if (!timer ## tname.initialized) \
1131 { \
1132 timer ## tname.initialized = 1; \
1133 timer ## tname.name = # tname; \
1134 pixman_timer_register (&timer ## tname); \
1135 } \
1136 \
1137 timer ## tname.n_times++; \
1138 begin ## tname = OIL_STAMP ();
1139
1140 #define TIMER_END(tname) \
1141 timer ## tname.total += OIL_STAMP () - begin ## tname; \
1142 }
1143
1144 #else
1145
1146 #define TIMER_BEGIN(tname)
1147 #define TIMER_END(tname)
1148
1149 #endif /* PIXMAN_TIMERS */
1150
1151 #endif /* __ASSEMBLER__ */
1152
1153 #endif /* PIXMAN_PRIVATE_H */
LuaTeX git mirror