71 typedef struct OffsetTable |
74 typedef struct OffsetTable |
72 { |
75 { |
73 friend struct OpenTypeFontFile; |
76 friend struct OpenTypeFontFile; |
74 |
77 |
75 inline unsigned int get_table_count (void) const |
78 inline unsigned int get_table_count (void) const |
76 { return numTables; } |
79 { return tables.len; } |
77 inline const TableRecord& get_table (unsigned int i) const |
80 inline const TableRecord& get_table (unsigned int i) const |
78 { |
81 { |
79 if (unlikely (i >= numTables)) return Null(TableRecord); |
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80 return tables[i]; |
82 return tables[i]; |
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83 } |
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84 inline unsigned int get_table_tags (unsigned int start_offset, |
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85 unsigned int *table_count, /* IN/OUT */ |
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86 hb_tag_t *table_tags /* OUT */) const |
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87 { |
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88 if (table_count) |
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89 { |
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90 if (start_offset >= tables.len) |
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91 *table_count = 0; |
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92 else |
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93 *table_count = MIN<unsigned int> (*table_count, tables.len - start_offset); |
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94 |
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95 const TableRecord *sub_tables = tables.array + start_offset; |
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96 unsigned int count = *table_count; |
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97 for (unsigned int i = 0; i < count; i++) |
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98 table_tags[i] = sub_tables[i].tag; |
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99 } |
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100 return tables.len; |
81 } |
101 } |
82 inline bool find_table_index (hb_tag_t tag, unsigned int *table_index) const |
102 inline bool find_table_index (hb_tag_t tag, unsigned int *table_index) const |
83 { |
103 { |
84 Tag t; |
104 Tag t; |
85 t.set (tag); |
105 t.set (tag); |
86 unsigned int count = numTables; |
106 /* Linear-search for small tables to work around fonts with unsorted |
87 for (unsigned int i = 0; i < count; i++) |
107 * table list. */ |
88 { |
108 int i = tables.len < 64 ? tables.lsearch (t) : tables.bsearch (t); |
89 if (t == tables[i].tag) |
109 if (table_index) |
90 { |
110 *table_index = i == -1 ? Index::NOT_FOUND_INDEX : (unsigned int) i; |
91 if (table_index) *table_index = i; |
111 return i != -1; |
92 return true; |
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93 } |
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94 } |
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95 if (table_index) *table_index = Index::NOT_FOUND_INDEX; |
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96 return false; |
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97 } |
112 } |
98 inline const TableRecord& get_table_by_tag (hb_tag_t tag) const |
113 inline const TableRecord& get_table_by_tag (hb_tag_t tag) const |
99 { |
114 { |
100 unsigned int table_index; |
115 unsigned int table_index; |
101 find_table_index (tag, &table_index); |
116 find_table_index (tag, &table_index); |
104 |
119 |
105 public: |
120 public: |
106 inline bool sanitize (hb_sanitize_context_t *c) const |
121 inline bool sanitize (hb_sanitize_context_t *c) const |
107 { |
122 { |
108 TRACE_SANITIZE (this); |
123 TRACE_SANITIZE (this); |
109 return_trace (c->check_struct (this) && c->check_array (tables, TableRecord::static_size, numTables)); |
124 return_trace (c->check_struct (this) && tables.sanitize (c)); |
110 } |
125 } |
111 |
126 |
112 protected: |
127 protected: |
113 Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */ |
128 Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */ |
114 USHORT numTables; /* Number of tables. */ |
129 BinSearchArrayOf<TableRecord> |
115 USHORT searchRangeZ; /* (Maximum power of 2 <= numTables) x 16 */ |
130 tables; |
116 USHORT entrySelectorZ; /* Log2(maximum power of 2 <= numTables). */ |
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117 USHORT rangeShiftZ; /* NumTables x 16-searchRange. */ |
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118 TableRecord tables[VAR]; /* TableRecord entries. numTables items */ |
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119 public: |
131 public: |
120 DEFINE_SIZE_ARRAY (12, tables); |
132 DEFINE_SIZE_ARRAY (12, tables); |
121 } OpenTypeFontFace; |
133 } OpenTypeFontFace; |
122 |
134 |
123 |
135 |
140 |
152 |
141 protected: |
153 protected: |
142 Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ |
154 Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ |
143 FixedVersion<>version; /* Version of the TTC Header (1.0), |
155 FixedVersion<>version; /* Version of the TTC Header (1.0), |
144 * 0x00010000u */ |
156 * 0x00010000u */ |
145 ArrayOf<OffsetTo<OffsetTable, ULONG>, ULONG> |
157 ArrayOf<LOffsetTo<OffsetTable>, ULONG> |
146 table; /* Array of offsets to the OffsetTable for each font |
158 table; /* Array of offsets to the OffsetTable for each font |
147 * from the beginning of the file */ |
159 * from the beginning of the file */ |
148 public: |
160 public: |
149 DEFINE_SIZE_ARRAY (12, table); |
161 DEFINE_SIZE_ARRAY (12, table); |
150 }; |
162 }; |