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1/***********************************************************
2
3Copyright 1987, 1998 The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
26
27 All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Digital not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45******************************************************************/
46/*
47 * Copyright © 1998, 2004 Keith Packard
48 * Copyright 2007 Red Hat, Inc.
49 *
50 * Permission to use, copy, modify, distribute, and sell this software and its
51 * documentation for any purpose is hereby granted without fee, provided that
52 * the above copyright notice appear in all copies and that both that
53 * copyright notice and this permission notice appear in supporting
54 * documentation, and that the name of Keith Packard not be used in
55 * advertising or publicity pertaining to distribution of the software without
56 * specific, written prior permission. Keith Packard makes no
57 * representations about the suitability of this software for any purpose. It
58 * is provided "as is" without express or implied warranty.
59 *
60 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
61 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
62 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
63 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
64 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
65 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
66 * PERFORMANCE OF THIS SOFTWARE.
67 */
68
69#ifndef PIXMAN_H__
70#define PIXMAN_H__
71
72#include <pixman-version.h>
73
74/*
75 * Standard integers
76 */
77#if defined (__SVR4) && defined (__sun)
78# include <sys/int_types.h>
79# include <stdint.h>
80#elif defined (__OpenBSD__)
81# include <inttypes.h>
82#elif defined (_MSC_VER)
83typedef __int8 int8_t;
84typedef unsigned __int8 uint8_t;
85typedef __int16 int16_t;
86typedef unsigned __int16 uint16_t;
87typedef __int32 int32_t;
88typedef unsigned __int32 uint32_t;
89typedef __int64 int64_t;
90typedef unsigned __int64 uint64_t;
91#else
92# include <stdint.h>
93#endif
94
95/* GCC visibility */
96#if defined(__GNUC__) && __GNUC__ >= 4
97#define PIXMAN_EXPORT __attribute__ ((visibility("default")))
98#else
99#define PIXMAN_EXPORT
100#endif
101
102/*
103 * Boolean
104 */
105typedef int pixman_bool_t;
106
107/*
108 * Fixpoint numbers
109 */
110typedef int64_t pixman_fixed_32_32_t;
111typedef pixman_fixed_32_32_t pixman_fixed_48_16_t;
112typedef uint32_t pixman_fixed_1_31_t;
113typedef uint32_t pixman_fixed_1_16_t;
114typedef int32_t pixman_fixed_16_16_t;
115typedef pixman_fixed_16_16_t pixman_fixed_t;
116
117#define pixman_fixed_e ((pixman_fixed_t) 1)
118#define pixman_fixed_1 (pixman_int_to_fixed(1))
119#define pixman_fixed_1_minus_e (pixman_fixed_1 - pixman_fixed_e)
120#define pixman_fixed_to_int(f) ((int) ((f) >> 16))
121#define pixman_int_to_fixed(i) ((pixman_fixed_t) ((i) << 16))
122#define pixman_fixed_to_double(f) (double) ((f) / (double) pixman_fixed_1)
123#define pixman_double_to_fixed(d) ((pixman_fixed_t) ((d) * 65536.0))
124#define pixman_fixed_frac(f) ((f) & pixman_fixed_1_minus_e)
125#define pixman_fixed_floor(f) ((f) & ~pixman_fixed_1_minus_e)
126#define pixman_fixed_ceil(f) pixman_fixed_floor ((f) + pixman_fixed_1_minus_e)
127#define pixman_fixed_fraction(f) ((f) & pixman_fixed_1_minus_e)
128#define pixman_fixed_mod_2(f) ((f) & (pixman_fixed1 | pixman_fixed_1_minus_e))
129#define pixman_max_fixed_48_16 ((pixman_fixed_48_16_t) 0x7fffffff)
130#define pixman_min_fixed_48_16 (-((pixman_fixed_48_16_t) 1 << 31))
131
132/*
133 * Misc structs
134 */
135typedef struct pixman_color pixman_color_t;
136typedef struct pixman_point_fixed pixman_point_fixed_t;
137typedef struct pixman_line_fixed pixman_line_fixed_t;
138typedef struct pixman_vector pixman_vector_t;
139typedef struct pixman_transform pixman_transform_t;
140
141struct pixman_color
142{
143 uint16_t red;
144 uint16_t green;
145 uint16_t blue;
146 uint16_t alpha;
147};
148
149struct pixman_point_fixed
150{
151 pixman_fixed_t x;
152 pixman_fixed_t y;
153};
154
155struct pixman_line_fixed
156{
157 pixman_point_fixed_t p1, p2;
158};
159
160struct pixman_vector
161{
162 pixman_fixed_t vector[3];
163};
164
165struct pixman_transform
166{
167 pixman_fixed_t matrix[3][3];
168};
169
170PIXMAN_EXPORT
171pixman_bool_t pixman_transform_point_3d (pixman_transform_t *transform,
172 pixman_vector_t *vector);
173
174/* Don't blame me, blame XRender */
175typedef enum
176{
177 PIXMAN_REPEAT_NONE,
178 PIXMAN_REPEAT_NORMAL,
179 PIXMAN_REPEAT_PAD,
180 PIXMAN_REPEAT_REFLECT
181} pixman_repeat_t;
182
183typedef enum
184{
185 PIXMAN_FILTER_FAST,
186 PIXMAN_FILTER_GOOD,
187 PIXMAN_FILTER_BEST,
188 PIXMAN_FILTER_NEAREST,
189 PIXMAN_FILTER_BILINEAR,
190 PIXMAN_FILTER_CONVOLUTION
191} pixman_filter_t;
192
193typedef enum
194{
195 PIXMAN_OP_CLEAR = 0x00,
196 PIXMAN_OP_SRC = 0x01,
197 PIXMAN_OP_DST = 0x02,
198 PIXMAN_OP_OVER = 0x03,
199 PIXMAN_OP_OVER_REVERSE = 0x04,
200 PIXMAN_OP_IN = 0x05,
201 PIXMAN_OP_IN_REVERSE = 0x06,
202 PIXMAN_OP_OUT = 0x07,
203 PIXMAN_OP_OUT_REVERSE = 0x08,
204 PIXMAN_OP_ATOP = 0x09,
205 PIXMAN_OP_ATOP_REVERSE = 0x0a,
206 PIXMAN_OP_XOR = 0x0b,
207 PIXMAN_OP_ADD = 0x0c,
208 PIXMAN_OP_SATURATE = 0x0d,
209
210 PIXMAN_OP_DISJOINT_CLEAR = 0x10,
211 PIXMAN_OP_DISJOINT_SRC = 0x11,
212 PIXMAN_OP_DISJOINT_DST = 0x12,
213 PIXMAN_OP_DISJOINT_OVER = 0x13,
214 PIXMAN_OP_DISJOINT_OVER_REVERSE = 0x14,
215 PIXMAN_OP_DISJOINT_IN = 0x15,
216 PIXMAN_OP_DISJOINT_IN_REVERSE = 0x16,
217 PIXMAN_OP_DISJOINT_OUT = 0x17,
218 PIXMAN_OP_DISJOINT_OUT_REVERSE = 0x18,
219 PIXMAN_OP_DISJOINT_ATOP = 0x19,
220 PIXMAN_OP_DISJOINT_ATOP_REVERSE = 0x1a,
221 PIXMAN_OP_DISJOINT_XOR = 0x1b,
222
223 PIXMAN_OP_CONJOINT_CLEAR = 0x20,
224 PIXMAN_OP_CONJOINT_SRC = 0x21,
225 PIXMAN_OP_CONJOINT_DST = 0x22,
226 PIXMAN_OP_CONJOINT_OVER = 0x23,
227 PIXMAN_OP_CONJOINT_OVER_REVERSE = 0x24,
228 PIXMAN_OP_CONJOINT_IN = 0x25,
229 PIXMAN_OP_CONJOINT_IN_REVERSE = 0x26,
230 PIXMAN_OP_CONJOINT_OUT = 0x27,
231 PIXMAN_OP_CONJOINT_OUT_REVERSE = 0x28,
232 PIXMAN_OP_CONJOINT_ATOP = 0x29,
233 PIXMAN_OP_CONJOINT_ATOP_REVERSE = 0x2a,
234 PIXMAN_OP_CONJOINT_XOR = 0x2b,
235
236 PIXMAN_OP_NONE
237} pixman_op_t;
238
239/*
240 * Regions
241 */
242typedef struct pixman_region16_data pixman_region16_data_t;
243typedef struct pixman_box16 pixman_box16_t;
244typedef struct pixman_rectangle16 pixman_rectangle16_t;
245typedef struct pixman_region16 pixman_region16_t;
246
247struct pixman_region16_data {
248 long size;
249 long numRects;
250/* pixman_box16_t rects[size]; in memory but not explicitly declared */
251};
252
253struct pixman_rectangle16
254{
255 int16_t x, y;
256 uint16_t width, height;
257};
258
259struct pixman_box16
260{
261 int16_t x1, y1, x2, y2;
262};
263
264struct pixman_region16
265{
266 pixman_box16_t extents;
267 pixman_region16_data_t *data;
268};
269
270typedef enum
271{
272 PIXMAN_REGION_OUT,
273 PIXMAN_REGION_IN,
274 PIXMAN_REGION_PART
275} pixman_region_overlap_t;
276
277PIXMAN_EXPORT
278int pixman_version (void);
279
280PIXMAN_EXPORT
281const char* pixman_version_string (void);
282
283/* This function exists only to make it possible to preserve the X ABI - it should
284 * go away at first opportunity.
285 */
286PIXMAN_EXPORT
287void pixman_region_set_static_pointers (pixman_box16_t *empty_box,
288 pixman_region16_data_t *empty_data,
289 pixman_region16_data_t *broken_data);
290
291/* creation/destruction */
292PIXMAN_EXPORT
293void pixman_region_init (pixman_region16_t *region);
294PIXMAN_EXPORT
295void pixman_region_init_rect (pixman_region16_t *region,
296 int x,
297 int y,
298 unsigned int width,
299 unsigned int height);
300PIXMAN_EXPORT
301void pixman_region_init_with_extents (pixman_region16_t *region,
302 pixman_box16_t *extents);
303PIXMAN_EXPORT
304void pixman_region_fini (pixman_region16_t *region);
305
306/* manipulation */
307PIXMAN_EXPORT
308void pixman_region_translate (pixman_region16_t *region,
309 int x,
310 int y);
311PIXMAN_EXPORT
312pixman_bool_t pixman_region_copy (pixman_region16_t *dest,
313 pixman_region16_t *source);
314PIXMAN_EXPORT
315pixman_bool_t pixman_region_intersect (pixman_region16_t *newReg,
316 pixman_region16_t *reg1,
317 pixman_region16_t *reg2);
318PIXMAN_EXPORT
319pixman_bool_t pixman_region_union (pixman_region16_t *newReg,
320 pixman_region16_t *reg1,
321 pixman_region16_t *reg2);
322PIXMAN_EXPORT
323pixman_bool_t pixman_region_union_rect (pixman_region16_t *dest,
324 pixman_region16_t *source,
325 int x,
326 int y,
327 unsigned int width,
328 unsigned int height);
329PIXMAN_EXPORT
330pixman_bool_t pixman_region_subtract (pixman_region16_t *regD,
331 pixman_region16_t *regM,
332 pixman_region16_t *regS);
333PIXMAN_EXPORT
334pixman_bool_t pixman_region_inverse (pixman_region16_t *newReg,
335 pixman_region16_t *reg1,
336 pixman_box16_t *invRect);
337PIXMAN_EXPORT
338pixman_bool_t pixman_region_contains_point (pixman_region16_t *region,
339 int x, int y, pixman_box16_t *box);
340PIXMAN_EXPORT
341pixman_region_overlap_t pixman_region_contains_rectangle (pixman_region16_t *pixman_region16_t,
342 pixman_box16_t *prect);
343PIXMAN_EXPORT
344pixman_bool_t pixman_region_not_empty (pixman_region16_t *region);
345PIXMAN_EXPORT
346pixman_box16_t * pixman_region_extents (pixman_region16_t *region);
347PIXMAN_EXPORT
348int pixman_region_n_rects (pixman_region16_t *region);
349PIXMAN_EXPORT
350pixman_box16_t * pixman_region_rectangles (pixman_region16_t *region,
351 int *n_rects);
352PIXMAN_EXPORT
353pixman_bool_t pixman_region_equal (pixman_region16_t *region1,
354 pixman_region16_t *region2);
355PIXMAN_EXPORT
356pixman_bool_t pixman_region_selfcheck (pixman_region16_t *region);
357PIXMAN_EXPORT
358void pixman_region_reset (pixman_region16_t *region, pixman_box16_t *box);
359PIXMAN_EXPORT
360pixman_bool_t pixman_region_init_rects (pixman_region16_t *region,
361 pixman_box16_t *boxes, int count);
362
363/* Copy / Fill */
364PIXMAN_EXPORT
365pixman_bool_t pixman_blt (uint32_t *src_bits,
366 uint32_t *dst_bits,
367 int src_stride,
368 int dst_stride,
369 int src_bpp,
370 int dst_bpp,
371 int src_x, int src_y,
372 int dst_x, int dst_y,
373 int width, int height);
374PIXMAN_EXPORT
375pixman_bool_t pixman_fill (uint32_t *bits,
376 int stride,
377 int bpp,
378 int x,
379 int y,
380 int width,
381 int height,
382 uint32_t _xor);
383/*
384 * Images
385 */
386typedef union pixman_image pixman_image_t;
387typedef struct pixman_indexed pixman_indexed_t;
388typedef struct pixman_gradient_stop pixman_gradient_stop_t;
389
390typedef uint32_t (* pixman_read_memory_func_t) (const void *src, int size);
391typedef void (* pixman_write_memory_func_t) (void *dst, uint32_t value, int size);
392
393struct pixman_gradient_stop {
394 pixman_fixed_t x;
395 pixman_color_t color;
396};
397
398#define PIXMAN_MAX_INDEXED 256 /* XXX depth must be <= 8 */
399
400#if PIXMAN_MAX_INDEXED <= 256
401typedef uint8_t pixman_index_type;
402#endif
403
404struct pixman_indexed
405{
406 pixman_bool_t color;
407 uint32_t rgba[PIXMAN_MAX_INDEXED];
408 pixman_index_type ent[32768];
409};
410
411/*
412 * While the protocol is generous in format support, the
413 * sample implementation allows only packed RGB and GBR
414 * representations for data to simplify software rendering,
415 */
416#define PIXMAN_FORMAT(bpp,type,a,r,g,b) (((bpp) << 24) | \
417 ((type) << 16) | \
418 ((a) << 12) | \
419 ((r) << 8) | \
420 ((g) << 4) | \
421 ((b)))
422
423#define PIXMAN_FORMAT_BPP(f) (((f) >> 24) )
424#define PIXMAN_FORMAT_TYPE(f) (((f) >> 16) & 0xff)
425#define PIXMAN_FORMAT_A(f) (((f) >> 12) & 0x0f)
426#define PIXMAN_FORMAT_R(f) (((f) >> 8) & 0x0f)
427#define PIXMAN_FORMAT_G(f) (((f) >> 4) & 0x0f)
428#define PIXMAN_FORMAT_B(f) (((f) ) & 0x0f)
429#define PIXMAN_FORMAT_RGB(f) (((f) ) & 0xfff)
430#define PIXMAN_FORMAT_VIS(f) (((f) ) & 0xffff)
431#define PIXMAN_FORMAT_DEPTH(f) (PIXMAN_FORMAT_A(f) + \
432 PIXMAN_FORMAT_R(f) + \
433 PIXMAN_FORMAT_G(f) + \
434 PIXMAN_FORMAT_B(f))
435
436#define PIXMAN_TYPE_OTHER 0
437#define PIXMAN_TYPE_A 1
438#define PIXMAN_TYPE_ARGB 2
439#define PIXMAN_TYPE_ABGR 3
440#define PIXMAN_TYPE_COLOR 4
441#define PIXMAN_TYPE_GRAY 5
442#define PIXMAN_TYPE_YUY2 6
443#define PIXMAN_TYPE_YV12 7
444
445#define PIXMAN_FORMAT_COLOR(f) (PIXMAN_FORMAT_TYPE(f) & 2)
446
447/* 32bpp formats */
448typedef enum {
449 PIXMAN_a8r8g8b8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,8,8,8,8),
450 PIXMAN_x8r8g8b8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,0,8,8,8),
451 PIXMAN_a8b8g8r8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,8,8,8,8),
452 PIXMAN_x8b8g8r8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,0,8,8,8),
453
454/* 24bpp formats */
455 PIXMAN_r8g8b8 = PIXMAN_FORMAT(24,PIXMAN_TYPE_ARGB,0,8,8,8),
456 PIXMAN_b8g8r8 = PIXMAN_FORMAT(24,PIXMAN_TYPE_ABGR,0,8,8,8),
457
458/* 16bpp formats */
459 PIXMAN_r5g6b5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,5,6,5),
460 PIXMAN_b5g6r5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,0,5,6,5),
461
462 PIXMAN_a1r5g5b5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,1,5,5,5),
463 PIXMAN_x1r5g5b5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,5,5,5),
464 PIXMAN_a1b5g5r5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,1,5,5,5),
465 PIXMAN_x1b5g5r5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,0,5,5,5),
466 PIXMAN_a4r4g4b4 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,4,4,4,4),
467 PIXMAN_x4r4g4b4 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,4,4,4),
468 PIXMAN_a4b4g4r4 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,4,4,4,4),
469 PIXMAN_x4b4g4r4 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,0,4,4,4),
470
471/* 8bpp formats */
472 PIXMAN_a8 = PIXMAN_FORMAT(8,PIXMAN_TYPE_A,8,0,0,0),
473 PIXMAN_r3g3b2 = PIXMAN_FORMAT(8,PIXMAN_TYPE_ARGB,0,3,3,2),
474 PIXMAN_b2g3r3 = PIXMAN_FORMAT(8,PIXMAN_TYPE_ABGR,0,3,3,2),
475 PIXMAN_a2r2g2b2 = PIXMAN_FORMAT(8,PIXMAN_TYPE_ARGB,2,2,2,2),
476 PIXMAN_a2b2g2r2 = PIXMAN_FORMAT(8,PIXMAN_TYPE_ABGR,2,2,2,2),
477
478 PIXMAN_c8 = PIXMAN_FORMAT(8,PIXMAN_TYPE_COLOR,0,0,0,0),
479 PIXMAN_g8 = PIXMAN_FORMAT(8,PIXMAN_TYPE_GRAY,0,0,0,0),
480
481 PIXMAN_x4a4 = PIXMAN_FORMAT(8,PIXMAN_TYPE_A,4,0,0,0),
482
483 PIXMAN_x4c4 = PIXMAN_FORMAT(8,PIXMAN_TYPE_COLOR,0,0,0,0),
484 PIXMAN_x4g4 = PIXMAN_FORMAT(8,PIXMAN_TYPE_GRAY,0,0,0,0),
485
486/* 4bpp formats */
487 PIXMAN_a4 = PIXMAN_FORMAT(4,PIXMAN_TYPE_A,4,0,0,0),
488 PIXMAN_r1g2b1 = PIXMAN_FORMAT(4,PIXMAN_TYPE_ARGB,0,1,2,1),
489 PIXMAN_b1g2r1 = PIXMAN_FORMAT(4,PIXMAN_TYPE_ABGR,0,1,2,1),
490 PIXMAN_a1r1g1b1 = PIXMAN_FORMAT(4,PIXMAN_TYPE_ARGB,1,1,1,1),
491 PIXMAN_a1b1g1r1 = PIXMAN_FORMAT(4,PIXMAN_TYPE_ABGR,1,1,1,1),
492
493 PIXMAN_c4 = PIXMAN_FORMAT(4,PIXMAN_TYPE_COLOR,0,0,0,0),
494 PIXMAN_g4 = PIXMAN_FORMAT(4,PIXMAN_TYPE_GRAY,0,0,0,0),
495
496/* 1bpp formats */
497 PIXMAN_a1 = PIXMAN_FORMAT(1,PIXMAN_TYPE_A,1,0,0,0),
498
499 PIXMAN_g1 = PIXMAN_FORMAT(1,PIXMAN_TYPE_GRAY,0,0,0,0),
500
501/* YUV formats */
502 PIXMAN_yuy2 = PIXMAN_FORMAT(16,PIXMAN_TYPE_YUY2,0,0,0,0),
503 PIXMAN_yv12 = PIXMAN_FORMAT(12,PIXMAN_TYPE_YV12,0,0,0,0),
504} pixman_format_code_t;
505
506/* Querying supported format values. */
507PIXMAN_EXPORT
508pixman_bool_t pixman_format_supported_destination (pixman_format_code_t format);
509
510PIXMAN_EXPORT
511pixman_bool_t pixman_format_supported_source (pixman_format_code_t format);
512
513/* Constructors */
514PIXMAN_EXPORT
515pixman_image_t *pixman_image_create_solid_fill (pixman_color_t *color);
516PIXMAN_EXPORT
517pixman_image_t *pixman_image_create_linear_gradient (pixman_point_fixed_t *p1,
518 pixman_point_fixed_t *p2,
519 const pixman_gradient_stop_t *stops,
520 int n_stops);
521PIXMAN_EXPORT
522pixman_image_t *pixman_image_create_radial_gradient (pixman_point_fixed_t *inner,
523 pixman_point_fixed_t *outer,
524 pixman_fixed_t inner_radius,
525 pixman_fixed_t outer_radius,
526 const pixman_gradient_stop_t *stops,
527 int n_stops);
528PIXMAN_EXPORT
529pixman_image_t *pixman_image_create_conical_gradient (pixman_point_fixed_t *center,
530 pixman_fixed_t angle,
531 const pixman_gradient_stop_t *stops,
532 int n_stops);
533PIXMAN_EXPORT
534pixman_image_t *pixman_image_create_bits (pixman_format_code_t format,
535 int width,
536 int height,
537 uint32_t *bits,
538 int rowstride_bytes);
539
540/* Destructor */
541PIXMAN_EXPORT
542pixman_image_t *pixman_image_ref (pixman_image_t *image);
543PIXMAN_EXPORT
544pixman_bool_t pixman_image_unref (pixman_image_t *image);
545
546
547/* Set properties */
548PIXMAN_EXPORT
549pixman_bool_t pixman_image_set_clip_region (pixman_image_t *image,
550 pixman_region16_t *region);
551PIXMAN_EXPORT
552void pixman_image_set_has_client_clip (pixman_image_t *image,
553 pixman_bool_t clien_clip);
554PIXMAN_EXPORT
555pixman_bool_t pixman_image_set_transform (pixman_image_t *image,
556 const pixman_transform_t *transform);
557PIXMAN_EXPORT
558void pixman_image_set_repeat (pixman_image_t *image,
559 pixman_repeat_t repeat);
560PIXMAN_EXPORT
561pixman_bool_t pixman_image_set_filter (pixman_image_t *image,
562 pixman_filter_t filter,
563 const pixman_fixed_t *filter_params,
564 int n_filter_params);
565PIXMAN_EXPORT
566void pixman_image_set_filter_params (pixman_image_t *image,
567 pixman_fixed_t *params,
568 int n_params);
569PIXMAN_EXPORT
570void pixman_image_set_source_clipping (pixman_image_t *image,
571 pixman_bool_t source_clipping);
572PIXMAN_EXPORT
573void pixman_image_set_alpha_map (pixman_image_t *image,
574 pixman_image_t *alpha_map,
575 int16_t x,
576 int16_t y);
577PIXMAN_EXPORT
578void pixman_image_set_component_alpha (pixman_image_t *image,
579 pixman_bool_t component_alpha);
580PIXMAN_EXPORT
581void pixman_image_set_accessors (pixman_image_t *image,
582 pixman_read_memory_func_t read_func,
583 pixman_write_memory_func_t write_func);
584PIXMAN_EXPORT
585void pixman_image_set_indexed (pixman_image_t *image,
586 const pixman_indexed_t *indexed);
587PIXMAN_EXPORT
588uint32_t *pixman_image_get_data (pixman_image_t *image);
589PIXMAN_EXPORT
590int pixman_image_get_width (pixman_image_t *image);
591PIXMAN_EXPORT
592int pixman_image_get_height (pixman_image_t *image);
593PIXMAN_EXPORT
594int pixman_image_get_stride (pixman_image_t *image);
595PIXMAN_EXPORT
596int pixman_image_get_depth (pixman_image_t *image);
597PIXMAN_EXPORT
598pixman_bool_t pixman_image_fill_rectangles (pixman_op_t op,
599 pixman_image_t *image,
600 pixman_color_t *color,
601 int n_rects,
602 const pixman_rectangle16_t *rects);
603
604/* Composite */
605PIXMAN_EXPORT
606pixman_bool_t pixman_compute_composite_region (pixman_region16_t * pRegion,
607 pixman_image_t * pSrc,
608 pixman_image_t * pMask,
609 pixman_image_t * pDst,
610 int16_t xSrc,
611 int16_t ySrc,
612 int16_t xMask,
613 int16_t yMask,
614 int16_t xDst,
615 int16_t yDst,
616 uint16_t width,
617 uint16_t height);
618PIXMAN_EXPORT
619void pixman_image_composite (pixman_op_t op,
620 pixman_image_t *src,
621 pixman_image_t *mask,
622 pixman_image_t *dest,
623 int16_t src_x,
624 int16_t src_y,
625 int16_t mask_x,
626 int16_t mask_y,
627 int16_t dest_x,
628 int16_t dest_y,
629 uint16_t width,
630 uint16_t height);
631
632/*
633 * Trapezoids
634 */
635typedef struct pixman_edge pixman_edge_t;
636typedef struct pixman_trapezoid pixman_trapezoid_t;
637typedef struct pixman_trap pixman_trap_t;
638typedef struct pixman_span_fix pixman_span_fix_t;
639
640/*
641 * An edge structure. This represents a single polygon edge
642 * and can be quickly stepped across small or large gaps in the
643 * sample grid
644 */
645struct pixman_edge
646{
647 pixman_fixed_t x;
648 pixman_fixed_t e;
649 pixman_fixed_t stepx;
650 pixman_fixed_t signdx;
651 pixman_fixed_t dy;
652 pixman_fixed_t dx;
653
654 pixman_fixed_t stepx_small;
655 pixman_fixed_t stepx_big;
656 pixman_fixed_t dx_small;
657 pixman_fixed_t dx_big;
658};
659
660struct pixman_trapezoid
661{
662 pixman_fixed_t top, bottom;
663 pixman_line_fixed_t left, right;
664};
665
666
667/* whether 't' is a well defined not obviously empty trapezoid */
668#define pixman_trapezoid_valid(t) \
669 ((t)->left.p1.y != (t)->left.p2.y && \
670 (t)->right.p1.y != (t)->right.p2.y && \
671 (int) ((t)->bottom - (t)->top) > 0)
672
673struct pixman_span_fix
674{
675 pixman_fixed_t l, r, y;
676};
677
678struct pixman_trap
679{
680 pixman_span_fix_t top, bot;
681};
682
683PIXMAN_EXPORT
684pixman_fixed_t pixman_sample_ceil_y (pixman_fixed_t y,
685 int bpp);
686PIXMAN_EXPORT
687pixman_fixed_t pixman_sample_floor_y (pixman_fixed_t y,
688 int bpp);
689PIXMAN_EXPORT
690void pixman_edge_step (pixman_edge_t *e,
691 int n);
692PIXMAN_EXPORT
693void pixman_edge_init (pixman_edge_t *e,
694 int bpp,
695 pixman_fixed_t y_start,
696 pixman_fixed_t x_top,
697 pixman_fixed_t y_top,
698 pixman_fixed_t x_bot,
699 pixman_fixed_t y_bot);
700PIXMAN_EXPORT
701void pixman_line_fixed_edge_init (pixman_edge_t *e,
702 int bpp,
703 pixman_fixed_t y,
704 const pixman_line_fixed_t *line,
705 int x_off,
706 int y_off);
707PIXMAN_EXPORT
708void pixman_rasterize_edges (pixman_image_t *image,
709 pixman_edge_t *l,
710 pixman_edge_t *r,
711 pixman_fixed_t t,
712 pixman_fixed_t b);
713PIXMAN_EXPORT
714void pixman_add_traps (pixman_image_t *image,
715 int16_t x_off,
716 int16_t y_off,
717 int ntrap,
718 pixman_trap_t *traps);
719PIXMAN_EXPORT
720void pixman_add_trapezoids (pixman_image_t *image,
721 int16_t x_off,
722 int y_off,
723 int ntraps,
724 const pixman_trapezoid_t *traps);
725PIXMAN_EXPORT
726void pixman_rasterize_trapezoid (pixman_image_t *image,
727 const pixman_trapezoid_t *trap,
728 int x_off,
729 int y_off);
730
731#endif /* PIXMAN_H__ */
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