gfx/harfbuzz/src/hb-shaper-private.hh@6474c204b198 (annotated)
gfx/harfbuzz/src/hb-shaper-private.hh
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright © 2012 Google, Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * This is part of HarfBuzz, a text shaping library. |
| michael@0 | 5 | * |
| michael@0 | 6 | * Permission is hereby granted, without written agreement and without |
| michael@0 | 7 | * license or royalty fees, to use, copy, modify, and distribute this |
| michael@0 | 8 | * software and its documentation for any purpose, provided that the |
| michael@0 | 9 | * above copyright notice and the following two paragraphs appear in |
| michael@0 | 10 | * all copies of this software. |
| michael@0 | 11 | * |
| michael@0 | 12 | * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| michael@0 | 13 | * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| michael@0 | 14 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| michael@0 | 15 | * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| michael@0 | 16 | * DAMAGE. |
| michael@0 | 17 | * |
| michael@0 | 18 | * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| michael@0 | 19 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| michael@0 | 20 | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| michael@0 | 21 | * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| michael@0 | 22 | * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| michael@0 | 23 | * |
| michael@0 | 24 | * Google Author(s): Behdad Esfahbod |
| michael@0 | 25 | */ |
| michael@0 | 26 | |
| michael@0 | 27 | #ifndef HB_SHAPER_PRIVATE_HH |
| michael@0 | 28 | #define HB_SHAPER_PRIVATE_HH |
| michael@0 | 29 | |
| michael@0 | 30 | #include "hb-private.hh" |
| michael@0 | 31 | |
| michael@0 | 32 | typedef hb_bool_t hb_shape_func_t (hb_shape_plan_t *shape_plan, |
| michael@0 | 33 | hb_font_t *font, |
| michael@0 | 34 | hb_buffer_t *buffer, |
| michael@0 | 35 | const hb_feature_t *features, |
| michael@0 | 36 | unsigned int num_features); |
| michael@0 | 37 | |
| michael@0 | 38 | #define HB_SHAPER_IMPLEMENT(name) \ |
| michael@0 | 39 | extern "C" HB_INTERNAL hb_shape_func_t _hb_##name##_shape; |
| michael@0 | 40 | #include "hb-shaper-list.hh" |
| michael@0 | 41 | #undef HB_SHAPER_IMPLEMENT |
| michael@0 | 42 | |
| michael@0 | 43 | struct hb_shaper_pair_t { |
| michael@0 | 44 | char name[16]; |
| michael@0 | 45 | hb_shape_func_t *func; |
| michael@0 | 46 | }; |
| michael@0 | 47 | |
| michael@0 | 48 | HB_INTERNAL const hb_shaper_pair_t * |
| michael@0 | 49 | _hb_shapers_get (void); |
| michael@0 | 50 | |
| michael@0 | 51 | |
| michael@0 | 52 | /* For embedding in face / font / ... */ |
| michael@0 | 53 | struct hb_shaper_data_t { |
| michael@0 | 54 | #define HB_SHAPER_IMPLEMENT(shaper) void *shaper; |
| michael@0 | 55 | #include "hb-shaper-list.hh" |
| michael@0 | 56 | #undef HB_SHAPER_IMPLEMENT |
| michael@0 | 57 | }; |
| michael@0 | 58 | |
| michael@0 | 59 | #define HB_SHAPERS_COUNT (sizeof (hb_shaper_data_t) / sizeof (void *)) |
| michael@0 | 60 | |
| michael@0 | 61 | /* Means: succeeded, but don't need to keep any data. */ |
| michael@0 | 62 | #define HB_SHAPER_DATA_SUCCEEDED ((void *) +1) |
| michael@0 | 63 | |
| michael@0 | 64 | /* Means: tried but failed to create. */ |
| michael@0 | 65 | #define HB_SHAPER_DATA_INVALID ((void *) -1) |
| michael@0 | 66 | #define HB_SHAPER_DATA_IS_INVALID(data) ((void *) (data) == HB_SHAPER_DATA_INVALID) |
| michael@0 | 67 | |
| michael@0 | 68 | #define HB_SHAPER_DATA_TYPE(shaper, object) struct hb_##shaper##_shaper_##object##_data_t |
| michael@0 | 69 | #define HB_SHAPER_DATA_INSTANCE(shaper, object, instance) (* (HB_SHAPER_DATA_TYPE(shaper, object) **) &(instance)->shaper_data.shaper) |
| michael@0 | 70 | #define HB_SHAPER_DATA(shaper, object) HB_SHAPER_DATA_INSTANCE (shaper, object, object) |
| michael@0 | 71 | #define HB_SHAPER_DATA_CREATE_FUNC(shaper, object) _hb_##shaper##_shaper_##object##_data_create |
| michael@0 | 72 | #define HB_SHAPER_DATA_DESTROY_FUNC(shaper, object) _hb_##shaper##_shaper_##object##_data_destroy |
| michael@0 | 73 | |
| michael@0 | 74 | #define HB_SHAPER_DATA_PROTOTYPE(shaper, object) \ |
| michael@0 | 75 | HB_SHAPER_DATA_TYPE (shaper, object); /* Type forward declaration. */ \ |
| michael@0 | 76 | extern "C" HB_INTERNAL HB_SHAPER_DATA_TYPE (shaper, object) * \ |
| michael@0 | 77 | HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (hb_##object##_t *object HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS); \ |
| michael@0 | 78 | extern "C" HB_INTERNAL void \ |
| michael@0 | 79 | HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (HB_SHAPER_DATA_TYPE (shaper, object) *data) |
| michael@0 | 80 | |
| michael@0 | 81 | #define HB_SHAPER_DATA_DESTROY(shaper, object) \ |
| michael@0 | 82 | if (object->shaper_data.shaper && \ |
| michael@0 | 83 | object->shaper_data.shaper != HB_SHAPER_DATA_INVALID && \ |
| michael@0 | 84 | object->shaper_data.shaper != HB_SHAPER_DATA_SUCCEEDED) \ |
| michael@0 | 85 | HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (HB_SHAPER_DATA (shaper, object)); |
| michael@0 | 86 | |
| michael@0 | 87 | #define HB_SHAPER_DATA_ENSURE_DECLARE(shaper, object) \ |
| michael@0 | 88 | static inline bool \ |
| michael@0 | 89 | hb_##shaper##_shaper_##object##_data_ensure (hb_##object##_t *object) \ |
| michael@0 | 90 | {\ |
| michael@0 | 91 | retry: \ |
| michael@0 | 92 | HB_SHAPER_DATA_TYPE (shaper, object) *data = (HB_SHAPER_DATA_TYPE (shaper, object) *) hb_atomic_ptr_get (&HB_SHAPER_DATA (shaper, object)); \ |
| michael@0 | 93 | if (unlikely (!data)) { \ |
| michael@0 | 94 | data = HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (object); \ |
| michael@0 | 95 | if (unlikely (!data)) \ |
| michael@0 | 96 | data = (HB_SHAPER_DATA_TYPE (shaper, object) *) HB_SHAPER_DATA_INVALID; \ |
| michael@0 | 97 | if (!hb_atomic_ptr_cmpexch (&HB_SHAPER_DATA (shaper, object), NULL, data)) { \ |
| michael@0 | 98 | if (data && \ |
| michael@0 | 99 | data != HB_SHAPER_DATA_INVALID && \ |
| michael@0 | 100 | data != HB_SHAPER_DATA_SUCCEEDED) \ |
| michael@0 | 101 | HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (data); \ |
| michael@0 | 102 | goto retry; \ |
| michael@0 | 103 | } \ |
| michael@0 | 104 | } \ |
| michael@0 | 105 | return data != NULL && !HB_SHAPER_DATA_IS_INVALID (data); \ |
| michael@0 | 106 | } |
| michael@0 | 107 | |
| michael@0 | 108 | |
| michael@0 | 109 | #endif /* HB_SHAPER_PRIVATE_HH */ |
