hb-ot-map-private.hh revision a8cf7b43fa795150ae3d42d64424bb6e0373d0b2
14924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod/* 22409d5f8d7dd8b535ce5ea29e933f7db27d33793Behdad Esfahbod * Copyright © 2009,2010 Red Hat, Inc. 3f860366456d9e59b139a940da6d89c3c4fb9e96eBehdad Esfahbod * Copyright © 2010,2011,2012 Google, Inc. 44924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * 54924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * This is part of HarfBuzz, a text shaping library. 64924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * 74924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * Permission is hereby granted, without written agreement and without 84924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 94924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * software and its documentation for any purpose, provided that the 104924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * above copyright notice and the following two paragraphs appear in 114924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * all copies of this software. 124924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * 134924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 144924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 154924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 164924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 174924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * DAMAGE. 184924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * 194924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 204924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 214924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 224924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 234924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 244924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * 254924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * Red Hat Author(s): Behdad Esfahbod 264924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod * Google Author(s): Behdad Esfahbod 274924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod */ 284924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 294924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod#ifndef HB_OT_MAP_PRIVATE_HH 304924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod#define HB_OT_MAP_PRIVATE_HH 314924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 32895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod#include "hb-buffer-private.hh" 334924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 34f860366456d9e59b139a940da6d89c3c4fb9e96eBehdad Esfahbod#include "hb-ot-layout-private.hh" 354924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 364924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 374924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbodstatic const hb_tag_t table_tags[2] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS}; 384924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 3990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodstruct hb_ot_map_t 4090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod{ 4190645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod friend struct hb_ot_map_builder_t; 424924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 438f08c3275040870a645ef034a38d30c05c619f21Behdad Esfahbod public: 444924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 45610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod struct feature_map_t { 46610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod hb_tag_t tag; /* should be first for our bsearch to work */ 47610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod unsigned int index[2]; /* GSUB/GPOS */ 48610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod unsigned int stage[2]; /* GSUB/GPOS */ 49610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod unsigned int shift; 50610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod hb_mask_t mask; 51610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod hb_mask_t _1_mask; /* mask for value=1, for quick access */ 52cfc507c5432e6327e8484b07b9e091212653bc92Behdad Esfahbod unsigned int needs_fallback : 1; 53a8cf7b43fa795150ae3d42d64424bb6e0373d0b2Behdad Esfahbod unsigned int auto_zwj : 1; 54610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 55610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod static int cmp (const feature_map_t *a, const feature_map_t *b) 56610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod { return a->tag < b->tag ? -1 : a->tag > b->tag ? 1 : 0; } 57610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod }; 58610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 59610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod struct lookup_map_t { 60cfc507c5432e6327e8484b07b9e091212653bc92Behdad Esfahbod unsigned short index; 61a8cf7b43fa795150ae3d42d64424bb6e0373d0b2Behdad Esfahbod unsigned short auto_zwj : 1; 62610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod hb_mask_t mask; 63610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 64610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod static int cmp (const lookup_map_t *a, const lookup_map_t *b) 65610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod { return a->index < b->index ? -1 : a->index > b->index ? 1 : 0; } 66610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod }; 67610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 688bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod typedef void (*pause_func_t) (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer); 69610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 70610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod struct pause_map_t { 71610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod unsigned int num_lookups; /* Cumulative */ 723e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod pause_func_t callback; 73610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod }; 74610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 75610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 768336186a52813b53e90b4399dc462d55750e2d37Behdad Esfahbod hb_ot_map_t (void) { memset (this, 0, sizeof (*this)); } 778336186a52813b53e90b4399dc462d55750e2d37Behdad Esfahbod 7839dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod inline hb_mask_t get_global_mask (void) const { return global_mask; } 794924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 80f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod inline hb_mask_t get_mask (hb_tag_t feature_tag, unsigned int *shift = NULL) const { 81f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod const feature_map_t *map = features.bsearch (&feature_tag); 828f08c3275040870a645ef034a38d30c05c619f21Behdad Esfahbod if (shift) *shift = map ? map->shift : 0; 838f08c3275040870a645ef034a38d30c05c619f21Behdad Esfahbod return map ? map->mask : 0; 844924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod } 854924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 86fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod inline bool needs_fallback (hb_tag_t feature_tag) const { 87fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod const feature_map_t *map = features.bsearch (&feature_tag); 88fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod return map ? map->needs_fallback : false; 89fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod } 90fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod 91f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod inline hb_mask_t get_1_mask (hb_tag_t feature_tag) const { 92f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod const feature_map_t *map = features.bsearch (&feature_tag); 9339dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod return map ? map->_1_mask : 0; 9439dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod } 9539dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod 96610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod inline unsigned int get_feature_index (unsigned int table_index, hb_tag_t feature_tag) const { 97f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod const feature_map_t *map = features.bsearch (&feature_tag); 98f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod return map ? map->index[table_index] : HB_OT_LAYOUT_NO_FEATURE_INDEX; 99f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod } 100f055442716ec7543ed156d4789955b19c11a5255Behdad Esfahbod 101610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod inline unsigned int get_feature_stage (unsigned int table_index, hb_tag_t feature_tag) const { 102610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod const feature_map_t *map = features.bsearch (&feature_tag); 103610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod return map ? map->stage[table_index] : (unsigned int) -1; 104610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod } 105610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 106610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod inline void get_stage_lookups (unsigned int table_index, unsigned int stage, 107610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod const struct lookup_map_t **plookups, unsigned int *lookup_count) const { 108610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod if (unlikely (stage == (unsigned int) -1)) { 109610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod *plookups = NULL; 110610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod *lookup_count = 0; 111610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod return; 112610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod } 113610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod assert (stage <= pauses[table_index].len); 114610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod unsigned int start = stage ? pauses[table_index][stage - 1].num_lookups : 0; 115610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod unsigned int end = stage < pauses[table_index].len ? pauses[table_index][stage].num_lookups : lookups[table_index].len; 116610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod *plookups = &lookups[table_index][start]; 117610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod *lookup_count = end - start; 118610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod } 119610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod 120f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod HB_INTERNAL void collect_lookups (unsigned int table_index, hb_set_t *lookups) const; 1218bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod HB_INTERNAL void substitute (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const; 1228bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod HB_INTERNAL void position (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const; 1231827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 1246a7ac79e26e85f6781186cf708a12825c0857324Behdad Esfahbod inline void finish (void) { 12590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod features.finish (); 12690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod lookups[0].finish (); 12790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod lookups[1].finish (); 128b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod pauses[0].finish (); 129b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod pauses[1].finish (); 1306a7ac79e26e85f6781186cf708a12825c0857324Behdad Esfahbod } 1316a7ac79e26e85f6781186cf708a12825c0857324Behdad Esfahbod 132851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod public: 133851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod hb_tag_t chosen_script[2]; 134851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod bool found_script[2]; 13590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod 136610e5e8f713bb2a68939b72cb2b801a7aaede4f9Behdad Esfahbod private: 137b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod 13890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod HB_INTERNAL void add_lookups (hb_face_t *face, 13990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int table_index, 14090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int feature_index, 141cfc507c5432e6327e8484b07b9e091212653bc92Behdad Esfahbod hb_mask_t mask, 142a8cf7b43fa795150ae3d42d64424bb6e0373d0b2Behdad Esfahbod bool auto_zwj); 14390645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod 14490645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_mask_t global_mask; 14590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod 14690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_prealloced_array_t<feature_map_t, 8> features; 14790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_prealloced_array_t<lookup_map_t, 32> lookups[2]; /* GSUB/GPOS */ 148b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod hb_prealloced_array_t<pause_map_t, 1> pauses[2]; /* GSUB/GPOS */ 14990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod}; 1504924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 151ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodenum hb_ot_map_feature_flags_t { 152ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod F_NONE = 0x0000, 153ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod F_GLOBAL = 0x0001, 154cfc507c5432e6327e8484b07b9e091212653bc92Behdad Esfahbod F_HAS_FALLBACK = 0x0002, 155a8cf7b43fa795150ae3d42d64424bb6e0373d0b2Behdad Esfahbod F_MANUAL_ZWJ = 0x0004 156ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod}; 15741732f1fe3ce856d8bb95850635034537b6ba047Behdad Esfahbod/* Macro version for where const is desired. */ 15841732f1fe3ce856d8bb95850635034537b6ba047Behdad Esfahbod#define F_COMBINE(l,r) (hb_ot_map_feature_flags_t ((unsigned int) (l) | (unsigned int) (r))) 159ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodinline hb_ot_map_feature_flags_t 160ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodoperator | (hb_ot_map_feature_flags_t l, hb_ot_map_feature_flags_t r) 161ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod{ return hb_ot_map_feature_flags_t ((unsigned int) l | (unsigned int) r); } 162ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodinline hb_ot_map_feature_flags_t 163ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodoperator & (hb_ot_map_feature_flags_t l, hb_ot_map_feature_flags_t r) 164ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod{ return hb_ot_map_feature_flags_t ((unsigned int) l & (unsigned int) r); } 165ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodinline hb_ot_map_feature_flags_t 166ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodoperator ~ (hb_ot_map_feature_flags_t r) 167ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod{ return hb_ot_map_feature_flags_t (~(unsigned int) r); } 168ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodinline hb_ot_map_feature_flags_t& 169ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodoperator |= (hb_ot_map_feature_flags_t &l, hb_ot_map_feature_flags_t r) 170ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod{ l = l | r; return l; } 171ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodinline hb_ot_map_feature_flags_t& 172ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbodoperator &= (hb_ot_map_feature_flags_t& l, hb_ot_map_feature_flags_t r) 173ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod{ l = l & r; return l; } 174ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod 1754924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 176f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbodstruct hb_ot_map_builder_t 177f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod{ 178f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod public: 179f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 1806fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod HB_INTERNAL hb_ot_map_builder_t (hb_face_t *face_, 1816fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod const hb_segment_properties_t *props_); 1828336186a52813b53e90b4399dc462d55750e2d37Behdad Esfahbod 183ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value, 184ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod hb_ot_map_feature_flags_t flags); 185f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 186e7ffcfafb1108801ac504f18f820e497226bf07fBehdad Esfahbod inline void add_global_bool_feature (hb_tag_t tag) 187ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod { add_feature (tag, 1, F_GLOBAL); } 188f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 1893e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod inline void add_gsub_pause (hb_ot_map_t::pause_func_t pause_func) 1903e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod { add_pause (0, pause_func); } 1913e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod inline void add_gpos_pause (hb_ot_map_t::pause_func_t pause_func) 1923e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod { add_pause (1, pause_func); } 193b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod 1946fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod HB_INTERNAL void compile (struct hb_ot_map_t &m); 195f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 196f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod inline void finish (void) { 197f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod feature_infos.finish (); 198b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod pauses[0].finish (); 199b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod pauses[1].finish (); 200f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod } 201f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 202f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod private: 203f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 204f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod struct feature_info_t { 205f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod hb_tag_t tag; 206f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod unsigned int seq; /* sequence#, used for stable sorting only */ 207f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod unsigned int max_value; 208ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod hb_ot_map_feature_flags_t flags; 209f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod unsigned int default_value; /* for non-global features, what should the unset glyphs take */ 210b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod unsigned int stage[2]; /* GSUB/GPOS */ 211f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 212f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod static int cmp (const feature_info_t *a, const feature_info_t *b) 213f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod { return (a->tag != b->tag) ? (a->tag < b->tag ? -1 : 1) : (a->seq < b->seq ? -1 : 1); } 214f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod }; 215f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 216b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod struct pause_info_t { 217b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod unsigned int stage; 2183e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod hb_ot_map_t::pause_func_t callback; 219b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod }; 220b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod 2213e38c0f2886c38d2f0a9d80a97a36edf2479d2c7Behdad Esfahbod HB_INTERNAL void add_pause (unsigned int table_index, hb_ot_map_t::pause_func_t pause_func); 222d8d0c480c85246a74d47dd5297019c7e39391ab0Behdad Esfahbod 2235ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod public: 2245ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod 2256fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod hb_face_t *face; 2266fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod hb_segment_properties_t props; 2276fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod 2286fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod hb_tag_t chosen_script[2]; 229851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod bool found_script[2]; 2306fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod unsigned int script_index[2], language_index[2]; 2316fddf2d7397411bba8a23ac535e8b851495d3105Behdad Esfahbod 2325ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod private: 2335ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod 234b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod unsigned int current_stage[2]; /* GSUB/GPOS */ 235b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod hb_prealloced_array_t<feature_info_t,16> feature_infos; 236b70c96dbe41d6512b80fe3d966a1942e1ef64a4bBehdad Esfahbod hb_prealloced_array_t<pause_info_t, 1> pauses[2]; /* GSUB/GPOS */ 237f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod}; 238f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 239f6d7a9bb4c19e605f1f16d9ca40adefba138c37eBehdad Esfahbod 2404924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod 2414924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod#endif /* HB_OT_MAP_PRIVATE_HH */ 242