29 #include "hb-font-private.hh"
30 #include "hb-buffer-private.hh"
31
32
33 #ifndef HB_DEBUG_SHAPE_PLAN
34 #define HB_DEBUG_SHAPE_PLAN (HB_DEBUG+0)
35 #endif
36
37
38 #define HB_SHAPER_IMPLEMENT(shaper) \
39 HB_SHAPER_DATA_ENSURE_DECLARE(shaper, face) \
40 HB_SHAPER_DATA_ENSURE_DECLARE(shaper, font)
41 #include "hb-shaper-list.hh"
42 #undef HB_SHAPER_IMPLEMENT
43
44
45 static void
46 hb_shape_plan_plan (hb_shape_plan_t *shape_plan,
47 const hb_feature_t *user_features,
48 unsigned int num_user_features,
49 const char * const *shaper_list)
50 {
51 DEBUG_MSG_FUNC (SHAPE_PLAN, shape_plan,
52 "num_features=%d shaper_list=%p",
53 num_user_features,
54 shaper_list);
55
56 const hb_shaper_pair_t *shapers = _hb_shapers_get ();
57
58 #define HB_SHAPER_PLAN(shaper) \
59 HB_STMT_START { \
60 if (hb_##shaper##_shaper_face_data_ensure (shape_plan->face_unsafe)) { \
61 HB_SHAPER_DATA (shaper, shape_plan) = \
62 HB_SHAPER_DATA_CREATE_FUNC (shaper, shape_plan) (shape_plan, user_features, num_user_features); \
63 shape_plan->shaper_func = _hb_##shaper##_shape; \
64 shape_plan->shaper_name = #shaper; \
65 return; \
66 } \
67 } HB_STMT_END
68
69 if (likely (!shaper_list)) {
70 for (unsigned int i = 0; i < HB_SHAPERS_COUNT; i++)
71 if (0)
72 ;
73 #define HB_SHAPER_IMPLEMENT(shaper) \
74 else if (shapers[i].func == _hb_##shaper##_shape) \
75 HB_SHAPER_PLAN (shaper);
76 #include "hb-shaper-list.hh"
77 #undef HB_SHAPER_IMPLEMENT
78 } else {
79 for (; *shaper_list; shaper_list++)
80 if (0)
81 ;
82 #define HB_SHAPER_IMPLEMENT(shaper) \
98 * hb_shape_plan_create: (Xconstructor)
99 * @face:
100 * @props:
101 * @user_features: (array length=num_user_features):
102 * @num_user_features:
103 * @shaper_list: (array zero-terminated=1):
104 *
105 *
106 *
107 * Return value: (transfer full):
108 *
109 * Since: 0.9.7
110 **/
111 hb_shape_plan_t *
112 hb_shape_plan_create (hb_face_t *face,
113 const hb_segment_properties_t *props,
114 const hb_feature_t *user_features,
115 unsigned int num_user_features,
116 const char * const *shaper_list)
117 {
118 DEBUG_MSG_FUNC (SHAPE_PLAN, NULL,
119 "face=%p num_features=%d shaper_list=%p",
120 face,
121 num_user_features,
122 shaper_list);
123
124 hb_shape_plan_t *shape_plan;
125 hb_feature_t *features = NULL;
126
127 if (unlikely (!face))
128 face = hb_face_get_empty ();
129 if (unlikely (!props))
130 return hb_shape_plan_get_empty ();
131 if (num_user_features && !(features = (hb_feature_t *) calloc (num_user_features, sizeof (hb_feature_t))))
132 return hb_shape_plan_get_empty ();
133 if (!(shape_plan = hb_object_create<hb_shape_plan_t> ())) {
134 free (features);
135 return hb_shape_plan_get_empty ();
136 }
137
138 assert (props->direction != HB_DIRECTION_INVALID);
139
140 hb_face_make_immutable (face);
141 shape_plan->default_shaper_list = shaper_list == NULL;
142 shape_plan->face_unsafe = face;
143 shape_plan->props = *props;
144 shape_plan->num_user_features = num_user_features;
145 shape_plan->user_features = features;
146 if (num_user_features)
147 memcpy (features, user_features, num_user_features * sizeof (hb_feature_t));
148
149 hb_shape_plan_plan (shape_plan, user_features, num_user_features, shaper_list);
150
151 return shape_plan;
152 }
153
154 /**
155 * hb_shape_plan_get_empty:
156 *
157 *
158 *
159 * Return value: (transfer full):
160 *
161 * Since: 0.9.7
162 **/
163 hb_shape_plan_t *
164 hb_shape_plan_get_empty (void)
165 {
166 static const hb_shape_plan_t _hb_shape_plan_nil = {
167 HB_OBJECT_HEADER_STATIC,
168
169 true, /* default_shaper_list */
170 NULL, /* face */
171 HB_SEGMENT_PROPERTIES_DEFAULT, /* props */
172
173 NULL, /* shaper_func */
174 NULL, /* shaper_name */
175
176 NULL, /* user_features */
177 0, /* num_user_featurs */
178
179 {
180 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
181 #include "hb-shaper-list.hh"
182 #undef HB_SHAPER_IMPLEMENT
183 }
184 };
185
186 return const_cast<hb_shape_plan_t *> (&_hb_shape_plan_nil);
187 }
188
189 /**
190 * hb_shape_plan_reference: (skip)
191 * @shape_plan: a shape plan.
192 *
193 *
194 *
195 * Return value: (transfer full):
196 *
197 * Since: 0.9.7
198 **/
203 }
204
205 /**
206 * hb_shape_plan_destroy: (skip)
207 * @shape_plan: a shape plan.
208 *
209 *
210 *
211 * Since: 0.9.7
212 **/
213 void
214 hb_shape_plan_destroy (hb_shape_plan_t *shape_plan)
215 {
216 if (!hb_object_destroy (shape_plan)) return;
217
218 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, shape_plan);
219 #include "hb-shaper-list.hh"
220 #undef HB_SHAPER_IMPLEMENT
221
222 free (shape_plan->user_features);
223
224 free (shape_plan);
225 }
226
227 /**
228 * hb_shape_plan_set_user_data: (skip)
229 * @shape_plan: a shape plan.
230 * @key:
231 * @data:
232 * @destroy:
233 * @replace:
234 *
235 *
236 *
237 * Return value:
238 *
239 * Since: 0.9.7
240 **/
241 hb_bool_t
242 hb_shape_plan_set_user_data (hb_shape_plan_t *shape_plan,
272 * @shape_plan: a shape plan.
273 * @font: a font.
274 * @buffer: a buffer.
275 * @features: (array length=num_features):
276 * @num_features:
277 *
278 *
279 *
280 * Return value:
281 *
282 * Since: 0.9.7
283 **/
284 hb_bool_t
285 hb_shape_plan_execute (hb_shape_plan_t *shape_plan,
286 hb_font_t *font,
287 hb_buffer_t *buffer,
288 const hb_feature_t *features,
289 unsigned int num_features)
290 {
291 DEBUG_MSG_FUNC (SHAPE_PLAN, shape_plan,
292 "num_features=%d shaper_func=%p",
293 num_features,
294 shape_plan->shaper_func);
295
296 if (unlikely (!buffer->len))
297 return true;
298
299 assert (!hb_object_is_inert (buffer));
300 assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE);
301
302 if (unlikely (hb_object_is_inert (shape_plan)))
303 return false;
304
305 assert (shape_plan->face_unsafe == font->face);
306 assert (hb_segment_properties_equal (&shape_plan->props, &buffer->props));
307
308 #define HB_SHAPER_EXECUTE(shaper) \
309 HB_STMT_START { \
310 return HB_SHAPER_DATA (shaper, shape_plan) && \
311 hb_##shaper##_shaper_font_data_ensure (font) && \
312 _hb_##shaper##_shape (shape_plan, font, buffer, features, num_features); \
313 } HB_STMT_END
314
333 #if 0
334 static unsigned int
335 hb_shape_plan_hash (const hb_shape_plan_t *shape_plan)
336 {
337 return hb_segment_properties_hash (&shape_plan->props) +
338 shape_plan->default_shaper_list ? 0 : (intptr_t) shape_plan->shaper_func;
339 }
340 #endif
341
342 /* User-feature caching is currently somewhat dumb:
343 * it only finds matches where the feature array is identical,
344 * not cases where the feature lists would be compatible for plan purposes
345 * but have different ranges, for example.
346 */
347 struct hb_shape_plan_proposal_t
348 {
349 const hb_segment_properties_t props;
350 const char * const *shaper_list;
351 const hb_feature_t *user_features;
352 unsigned int num_user_features;
353 hb_shape_func_t *shaper_func;
354 };
355
356 static inline hb_bool_t
357 hb_shape_plan_user_features_match (const hb_shape_plan_t *shape_plan,
358 const hb_shape_plan_proposal_t *proposal)
359 {
360 if (proposal->num_user_features != shape_plan->num_user_features) return false;
361 for (unsigned int i = 0, n = proposal->num_user_features; i < n; i++)
362 if (proposal->user_features[i].tag != shape_plan->user_features[i].tag ||
363 proposal->user_features[i].value != shape_plan->user_features[i].value ||
364 proposal->user_features[i].start != shape_plan->user_features[i].start ||
365 proposal->user_features[i].end != shape_plan->user_features[i].end) return false;
366 return true;
367 }
368
369 static hb_bool_t
370 hb_shape_plan_matches (const hb_shape_plan_t *shape_plan,
371 const hb_shape_plan_proposal_t *proposal)
372 {
373 return hb_segment_properties_equal (&shape_plan->props, &proposal->props) &&
374 hb_shape_plan_user_features_match (shape_plan, proposal) &&
375 ((shape_plan->default_shaper_list && proposal->shaper_list == NULL) ||
376 (shape_plan->shaper_func == proposal->shaper_func));
377 }
378
379 static inline hb_bool_t
380 hb_non_global_user_features_present (const hb_feature_t *user_features,
381 unsigned int num_user_features)
382 {
383 while (num_user_features)
384 if (user_features->start != 0 || user_features->end != (unsigned int) -1)
385 return true;
386 else
387 num_user_features--, user_features++;
388 return false;
389 }
390
391 /**
392 * hb_shape_plan_create_cached:
393 * @face:
394 * @props:
395 * @user_features: (array length=num_user_features):
396 * @num_user_features:
397 * @shaper_list: (array zero-terminated=1):
398 *
399 *
400 *
401 * Return value: (transfer full):
402 *
403 * Since: 0.9.7
404 **/
405 hb_shape_plan_t *
406 hb_shape_plan_create_cached (hb_face_t *face,
407 const hb_segment_properties_t *props,
408 const hb_feature_t *user_features,
409 unsigned int num_user_features,
410 const char * const *shaper_list)
411 {
412 DEBUG_MSG_FUNC (SHAPE_PLAN, NULL,
413 "face=%p num_features=%d shaper_list=%p",
414 face,
415 num_user_features,
416 shaper_list);
417
418 hb_shape_plan_proposal_t proposal = {
419 *props,
420 shaper_list,
421 user_features,
422 num_user_features,
423 NULL
424 };
425
426 if (shaper_list) {
427 /* Choose shaper. Adapted from hb_shape_plan_plan().
428 * Must choose shaper exactly the same way as that function. */
429 for (const char * const *shaper_item = shaper_list; *shaper_item; shaper_item++)
430 if (0)
431 ;
438 }
439 #include "hb-shaper-list.hh"
440 #undef HB_SHAPER_IMPLEMENT
441
442 if (unlikely (!proposal.shaper_func))
443 return hb_shape_plan_get_empty ();
444 }
445
446
447 retry:
448 hb_face_t::plan_node_t *cached_plan_nodes = (hb_face_t::plan_node_t *) hb_atomic_ptr_get (&face->shape_plans);
449 for (hb_face_t::plan_node_t *node = cached_plan_nodes; node; node = node->next)
450 if (hb_shape_plan_matches (node->shape_plan, &proposal))
451 {
452 DEBUG_MSG_FUNC (SHAPE_PLAN, node->shape_plan, "fulfilled from cache");
453 return hb_shape_plan_reference (node->shape_plan);
454 }
455
456 /* Not found. */
457
458 hb_shape_plan_t *shape_plan = hb_shape_plan_create (face, props, user_features, num_user_features, shaper_list);
459
460 /* Don't add to the cache if face is inert. */
461 if (unlikely (hb_object_is_inert (face)))
462 return shape_plan;
463
464 /* Don't add the plan to the cache if there were user features with non-global ranges */
465
466 if (hb_non_global_user_features_present (user_features, num_user_features))
467 return shape_plan;
468
469 hb_face_t::plan_node_t *node = (hb_face_t::plan_node_t *) calloc (1, sizeof (hb_face_t::plan_node_t));
470 if (unlikely (!node))
471 return shape_plan;
472
473 node->shape_plan = shape_plan;
474 node->next = cached_plan_nodes;
475
476 if (!hb_atomic_ptr_cmpexch (&face->shape_plans, cached_plan_nodes, node)) {
477 hb_shape_plan_destroy (shape_plan);
478 free (node);
479 goto retry;
480 }
481 DEBUG_MSG_FUNC (SHAPE_PLAN, shape_plan, "inserted into cache");
482
483 return hb_shape_plan_reference (shape_plan);
484 }
485
486 /**
487 * hb_shape_plan_get_shaper:
|
29 #include "hb-font-private.hh"
30 #include "hb-buffer-private.hh"
31
32
33 #ifndef HB_DEBUG_SHAPE_PLAN
34 #define HB_DEBUG_SHAPE_PLAN (HB_DEBUG+0)
35 #endif
36
37
38 #define HB_SHAPER_IMPLEMENT(shaper) \
39 HB_SHAPER_DATA_ENSURE_DECLARE(shaper, face) \
40 HB_SHAPER_DATA_ENSURE_DECLARE(shaper, font)
41 #include "hb-shaper-list.hh"
42 #undef HB_SHAPER_IMPLEMENT
43
44
45 static void
46 hb_shape_plan_plan (hb_shape_plan_t *shape_plan,
47 const hb_feature_t *user_features,
48 unsigned int num_user_features,
49 const int *coords,
50 unsigned int num_coords,
51 const char * const *shaper_list)
52 {
53 DEBUG_MSG_FUNC (SHAPE_PLAN, shape_plan,
54 "num_features=%d num_coords=%d shaper_list=%p",
55 num_user_features,
56 num_coords,
57 shaper_list);
58
59 const hb_shaper_pair_t *shapers = _hb_shapers_get ();
60
61 #define HB_SHAPER_PLAN(shaper) \
62 HB_STMT_START { \
63 if (hb_##shaper##_shaper_face_data_ensure (shape_plan->face_unsafe)) { \
64 HB_SHAPER_DATA (shaper, shape_plan) = \
65 HB_SHAPER_DATA_CREATE_FUNC (shaper, shape_plan) (shape_plan, \
66 user_features, num_user_features, \
67 coords, num_coords); \
68 shape_plan->shaper_func = _hb_##shaper##_shape; \
69 shape_plan->shaper_name = #shaper; \
70 return; \
71 } \
72 } HB_STMT_END
73
74 if (likely (!shaper_list)) {
75 for (unsigned int i = 0; i < HB_SHAPERS_COUNT; i++)
76 if (0)
77 ;
78 #define HB_SHAPER_IMPLEMENT(shaper) \
79 else if (shapers[i].func == _hb_##shaper##_shape) \
80 HB_SHAPER_PLAN (shaper);
81 #include "hb-shaper-list.hh"
82 #undef HB_SHAPER_IMPLEMENT
83 } else {
84 for (; *shaper_list; shaper_list++)
85 if (0)
86 ;
87 #define HB_SHAPER_IMPLEMENT(shaper) \
103 * hb_shape_plan_create: (Xconstructor)
104 * @face:
105 * @props:
106 * @user_features: (array length=num_user_features):
107 * @num_user_features:
108 * @shaper_list: (array zero-terminated=1):
109 *
110 *
111 *
112 * Return value: (transfer full):
113 *
114 * Since: 0.9.7
115 **/
116 hb_shape_plan_t *
117 hb_shape_plan_create (hb_face_t *face,
118 const hb_segment_properties_t *props,
119 const hb_feature_t *user_features,
120 unsigned int num_user_features,
121 const char * const *shaper_list)
122 {
123 return hb_shape_plan_create2 (face, props,
124 user_features, num_user_features,
125 NULL, 0,
126 shaper_list);
127 }
128
129 hb_shape_plan_t *
130 hb_shape_plan_create2 (hb_face_t *face,
131 const hb_segment_properties_t *props,
132 const hb_feature_t *user_features,
133 unsigned int num_user_features,
134 const int *orig_coords,
135 unsigned int num_coords,
136 const char * const *shaper_list)
137 {
138 DEBUG_MSG_FUNC (SHAPE_PLAN, NULL,
139 "face=%p num_features=%d num_coords=%d shaper_list=%p",
140 face,
141 num_user_features,
142 num_coords,
143 shaper_list);
144
145 hb_shape_plan_t *shape_plan;
146 hb_feature_t *features = NULL;
147 int *coords = NULL;
148
149 if (unlikely (!face))
150 face = hb_face_get_empty ();
151 if (unlikely (!props))
152 return hb_shape_plan_get_empty ();
153 if (num_user_features && !(features = (hb_feature_t *) calloc (num_user_features, sizeof (hb_feature_t))))
154 return hb_shape_plan_get_empty ();
155 if (num_coords && !(coords = (int *) calloc (num_coords, sizeof (int))))
156 {
157 free (features);
158 return hb_shape_plan_get_empty ();
159 }
160 if (!(shape_plan = hb_object_create<hb_shape_plan_t> ()))
161 {
162 free (coords);
163 free (features);
164 return hb_shape_plan_get_empty ();
165 }
166
167 assert (props->direction != HB_DIRECTION_INVALID);
168
169 hb_face_make_immutable (face);
170 shape_plan->default_shaper_list = shaper_list == NULL;
171 shape_plan->face_unsafe = face;
172 shape_plan->props = *props;
173 shape_plan->num_user_features = num_user_features;
174 shape_plan->user_features = features;
175 if (num_user_features)
176 memcpy (features, user_features, num_user_features * sizeof (hb_feature_t));
177 shape_plan->num_coords = num_coords;
178 shape_plan->coords = coords;
179 if (num_coords)
180 memcpy (coords, orig_coords, num_coords * sizeof (int));
181
182 hb_shape_plan_plan (shape_plan,
183 user_features, num_user_features,
184 coords, num_coords,
185 shaper_list);
186
187 return shape_plan;
188 }
189
190 /**
191 * hb_shape_plan_get_empty:
192 *
193 *
194 *
195 * Return value: (transfer full):
196 *
197 * Since: 0.9.7
198 **/
199 hb_shape_plan_t *
200 hb_shape_plan_get_empty (void)
201 {
202 static const hb_shape_plan_t _hb_shape_plan_nil = {
203 HB_OBJECT_HEADER_STATIC,
204
205 true, /* default_shaper_list */
206 NULL, /* face */
207 HB_SEGMENT_PROPERTIES_DEFAULT, /* props */
208
209 NULL, /* shaper_func */
210 NULL, /* shaper_name */
211
212 NULL, /* user_features */
213 0, /* num_user_featurs */
214
215 NULL, /* coords */
216 0, /* num_coords */
217
218 {
219 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
220 #include "hb-shaper-list.hh"
221 #undef HB_SHAPER_IMPLEMENT
222 }
223 };
224
225 return const_cast<hb_shape_plan_t *> (&_hb_shape_plan_nil);
226 }
227
228 /**
229 * hb_shape_plan_reference: (skip)
230 * @shape_plan: a shape plan.
231 *
232 *
233 *
234 * Return value: (transfer full):
235 *
236 * Since: 0.9.7
237 **/
242 }
243
244 /**
245 * hb_shape_plan_destroy: (skip)
246 * @shape_plan: a shape plan.
247 *
248 *
249 *
250 * Since: 0.9.7
251 **/
252 void
253 hb_shape_plan_destroy (hb_shape_plan_t *shape_plan)
254 {
255 if (!hb_object_destroy (shape_plan)) return;
256
257 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, shape_plan);
258 #include "hb-shaper-list.hh"
259 #undef HB_SHAPER_IMPLEMENT
260
261 free (shape_plan->user_features);
262 free (shape_plan->coords);
263
264 free (shape_plan);
265 }
266
267 /**
268 * hb_shape_plan_set_user_data: (skip)
269 * @shape_plan: a shape plan.
270 * @key:
271 * @data:
272 * @destroy:
273 * @replace:
274 *
275 *
276 *
277 * Return value:
278 *
279 * Since: 0.9.7
280 **/
281 hb_bool_t
282 hb_shape_plan_set_user_data (hb_shape_plan_t *shape_plan,
312 * @shape_plan: a shape plan.
313 * @font: a font.
314 * @buffer: a buffer.
315 * @features: (array length=num_features):
316 * @num_features:
317 *
318 *
319 *
320 * Return value:
321 *
322 * Since: 0.9.7
323 **/
324 hb_bool_t
325 hb_shape_plan_execute (hb_shape_plan_t *shape_plan,
326 hb_font_t *font,
327 hb_buffer_t *buffer,
328 const hb_feature_t *features,
329 unsigned int num_features)
330 {
331 DEBUG_MSG_FUNC (SHAPE_PLAN, shape_plan,
332 "num_features=%d shaper_func=%p, shaper_name=%s",
333 num_features,
334 shape_plan->shaper_func,
335 shape_plan->shaper_name);
336
337 if (unlikely (!buffer->len))
338 return true;
339
340 assert (!hb_object_is_inert (buffer));
341 assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE);
342
343 if (unlikely (hb_object_is_inert (shape_plan)))
344 return false;
345
346 assert (shape_plan->face_unsafe == font->face);
347 assert (hb_segment_properties_equal (&shape_plan->props, &buffer->props));
348
349 #define HB_SHAPER_EXECUTE(shaper) \
350 HB_STMT_START { \
351 return HB_SHAPER_DATA (shaper, shape_plan) && \
352 hb_##shaper##_shaper_font_data_ensure (font) && \
353 _hb_##shaper##_shape (shape_plan, font, buffer, features, num_features); \
354 } HB_STMT_END
355
374 #if 0
375 static unsigned int
376 hb_shape_plan_hash (const hb_shape_plan_t *shape_plan)
377 {
378 return hb_segment_properties_hash (&shape_plan->props) +
379 shape_plan->default_shaper_list ? 0 : (intptr_t) shape_plan->shaper_func;
380 }
381 #endif
382
383 /* User-feature caching is currently somewhat dumb:
384 * it only finds matches where the feature array is identical,
385 * not cases where the feature lists would be compatible for plan purposes
386 * but have different ranges, for example.
387 */
388 struct hb_shape_plan_proposal_t
389 {
390 const hb_segment_properties_t props;
391 const char * const *shaper_list;
392 const hb_feature_t *user_features;
393 unsigned int num_user_features;
394 const int *coords;
395 unsigned int num_coords;
396 hb_shape_func_t *shaper_func;
397 };
398
399 static inline hb_bool_t
400 hb_shape_plan_user_features_match (const hb_shape_plan_t *shape_plan,
401 const hb_shape_plan_proposal_t *proposal)
402 {
403 if (proposal->num_user_features != shape_plan->num_user_features)
404 return false;
405 for (unsigned int i = 0, n = proposal->num_user_features; i < n; i++)
406 if (proposal->user_features[i].tag != shape_plan->user_features[i].tag ||
407 proposal->user_features[i].value != shape_plan->user_features[i].value ||
408 proposal->user_features[i].start != shape_plan->user_features[i].start ||
409 proposal->user_features[i].end != shape_plan->user_features[i].end)
410 return false;
411 return true;
412 }
413
414 static inline hb_bool_t
415 hb_shape_plan_coords_match (const hb_shape_plan_t *shape_plan,
416 const hb_shape_plan_proposal_t *proposal)
417 {
418 if (proposal->num_coords != shape_plan->num_coords)
419 return false;
420 for (unsigned int i = 0, n = proposal->num_coords; i < n; i++)
421 if (proposal->coords[i] != shape_plan->coords[i])
422 return false;
423 return true;
424 }
425
426 static hb_bool_t
427 hb_shape_plan_matches (const hb_shape_plan_t *shape_plan,
428 const hb_shape_plan_proposal_t *proposal)
429 {
430 return hb_segment_properties_equal (&shape_plan->props, &proposal->props) &&
431 hb_shape_plan_user_features_match (shape_plan, proposal) &&
432 hb_shape_plan_coords_match (shape_plan, proposal) &&
433 ((shape_plan->default_shaper_list && proposal->shaper_list == NULL) ||
434 (shape_plan->shaper_func == proposal->shaper_func));
435 }
436
437 static inline hb_bool_t
438 hb_non_global_user_features_present (const hb_feature_t *user_features,
439 unsigned int num_user_features)
440 {
441 while (num_user_features)
442 if (user_features->start != 0 || user_features->end != (unsigned int) -1)
443 return true;
444 else
445 num_user_features--, user_features++;
446 return false;
447 }
448
449 static inline hb_bool_t
450 hb_coords_present (const int *coords,
451 unsigned int num_coords)
452 {
453 return num_coords != 0;
454 }
455
456 /**
457 * hb_shape_plan_create_cached:
458 * @face:
459 * @props:
460 * @user_features: (array length=num_user_features):
461 * @num_user_features:
462 * @shaper_list: (array zero-terminated=1):
463 *
464 *
465 *
466 * Return value: (transfer full):
467 *
468 * Since: 0.9.7
469 **/
470 hb_shape_plan_t *
471 hb_shape_plan_create_cached (hb_face_t *face,
472 const hb_segment_properties_t *props,
473 const hb_feature_t *user_features,
474 unsigned int num_user_features,
475 const char * const *shaper_list)
476 {
477 return hb_shape_plan_create_cached2 (face, props,
478 user_features, num_user_features,
479 NULL, 0,
480 shaper_list);
481 }
482
483 hb_shape_plan_t *
484 hb_shape_plan_create_cached2 (hb_face_t *face,
485 const hb_segment_properties_t *props,
486 const hb_feature_t *user_features,
487 unsigned int num_user_features,
488 const int *coords,
489 unsigned int num_coords,
490 const char * const *shaper_list)
491 {
492 DEBUG_MSG_FUNC (SHAPE_PLAN, NULL,
493 "face=%p num_features=%d shaper_list=%p",
494 face,
495 num_user_features,
496 shaper_list);
497
498 hb_shape_plan_proposal_t proposal = {
499 *props,
500 shaper_list,
501 user_features,
502 num_user_features,
503 NULL
504 };
505
506 if (shaper_list) {
507 /* Choose shaper. Adapted from hb_shape_plan_plan().
508 * Must choose shaper exactly the same way as that function. */
509 for (const char * const *shaper_item = shaper_list; *shaper_item; shaper_item++)
510 if (0)
511 ;
518 }
519 #include "hb-shaper-list.hh"
520 #undef HB_SHAPER_IMPLEMENT
521
522 if (unlikely (!proposal.shaper_func))
523 return hb_shape_plan_get_empty ();
524 }
525
526
527 retry:
528 hb_face_t::plan_node_t *cached_plan_nodes = (hb_face_t::plan_node_t *) hb_atomic_ptr_get (&face->shape_plans);
529 for (hb_face_t::plan_node_t *node = cached_plan_nodes; node; node = node->next)
530 if (hb_shape_plan_matches (node->shape_plan, &proposal))
531 {
532 DEBUG_MSG_FUNC (SHAPE_PLAN, node->shape_plan, "fulfilled from cache");
533 return hb_shape_plan_reference (node->shape_plan);
534 }
535
536 /* Not found. */
537
538 hb_shape_plan_t *shape_plan = hb_shape_plan_create2 (face, props,
539 user_features, num_user_features,
540 coords, num_coords,
541 shaper_list);
542
543 /* Don't add to the cache if face is inert. */
544 if (unlikely (hb_object_is_inert (face)))
545 return shape_plan;
546
547 /* Don't add the plan to the cache if there were user features with non-global ranges */
548 if (hb_non_global_user_features_present (user_features, num_user_features))
549 return shape_plan;
550 /* Don't add the plan to the cache if there were variation coordinates XXX Fix me. */
551 if (hb_coords_present (coords, num_coords))
552 return shape_plan;
553
554 hb_face_t::plan_node_t *node = (hb_face_t::plan_node_t *) calloc (1, sizeof (hb_face_t::plan_node_t));
555 if (unlikely (!node))
556 return shape_plan;
557
558 node->shape_plan = shape_plan;
559 node->next = cached_plan_nodes;
560
561 if (!hb_atomic_ptr_cmpexch (&face->shape_plans, cached_plan_nodes, node)) {
562 hb_shape_plan_destroy (shape_plan);
563 free (node);
564 goto retry;
565 }
566 DEBUG_MSG_FUNC (SHAPE_PLAN, shape_plan, "inserted into cache");
567
568 return hb_shape_plan_reference (shape_plan);
569 }
570
571 /**
572 * hb_shape_plan_get_shaper:
|