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1 // Copyright 2013 Google Inc. All Rights Reserved. | 1 // Copyright 2013 Google Inc. All Rights Reserved. |
2 // | 2 // |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
4 // you may not use this file except in compliance with the License. | 4 // you may not use this file except in compliance with the License. |
5 // You may obtain a copy of the License at | 5 // You may obtain a copy of the License at |
6 // | 6 // |
7 // http://www.apache.org/licenses/LICENSE-2.0 | 7 // http://www.apache.org/licenses/LICENSE-2.0 |
8 // | 8 // |
9 // Unless required by applicable law or agreed to in writing, software | 9 // Unless required by applicable law or agreed to in writing, software |
10 // distributed under the License is distributed on an "AS IS" BASIS, | 10 // distributed under the License is distributed on an "AS IS" BASIS, |
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111 if (!buffer.ReadU16(&glyph->instructions_size)) { | 111 if (!buffer.ReadU16(&glyph->instructions_size)) { |
112 return FONT_COMPRESSION_FAILURE(); | 112 return FONT_COMPRESSION_FAILURE(); |
113 } | 113 } |
114 glyph->instructions_data = data + buffer.offset(); | 114 glyph->instructions_data = data + buffer.offset(); |
115 if (!buffer.Skip(glyph->instructions_size)) { | 115 if (!buffer.Skip(glyph->instructions_size)) { |
116 return FONT_COMPRESSION_FAILURE(); | 116 return FONT_COMPRESSION_FAILURE(); |
117 } | 117 } |
118 | 118 |
119 // Read the run-length coded flags. | 119 // Read the run-length coded flags. |
120 std::vector<std::vector<uint8_t> > flags(num_contours); | 120 std::vector<std::vector<uint8_t> > flags(num_contours); |
121 uint8_t flag = 0; | 121 { |
122 uint8_t flag_repeat = 0; | 122 uint8_t flag = 0; |
123 for (int i = 0; i < num_contours; ++i) { | 123 uint8_t flag_repeat = 0; |
124 flags[i].resize(glyph->contours[i].size()); | 124 for (int i = 0; i < num_contours; ++i) { |
125 for (size_t j = 0; j < glyph->contours[i].size(); ++j) { | 125 flags[i].resize(glyph->contours[i].size()); |
126 if (flag_repeat == 0) { | 126 for (size_t j = 0; j < glyph->contours[i].size(); ++j) { |
127 if (!buffer.ReadU8(&flag)) { | 127 if (flag_repeat == 0) { |
128 return FONT_COMPRESSION_FAILURE(); | 128 if (!buffer.ReadU8(&flag)) { |
129 } | |
130 if (flag & kFLAG_REPEAT) { | |
131 if (!buffer.ReadU8(&flag_repeat)) { | |
132 return FONT_COMPRESSION_FAILURE(); | 129 return FONT_COMPRESSION_FAILURE(); |
133 } | 130 } |
| 131 if (flag & kFLAG_REPEAT) { |
| 132 if (!buffer.ReadU8(&flag_repeat)) { |
| 133 return FONT_COMPRESSION_FAILURE(); |
| 134 } |
| 135 } |
| 136 } else { |
| 137 flag_repeat--; |
134 } | 138 } |
135 } else { | 139 flags[i][j] = flag; |
136 flag_repeat--; | 140 glyph->contours[i][j].on_curve = flag & kFLAG_ONCURVE; |
137 } | 141 } |
138 flags[i][j] = flag; | |
139 glyph->contours[i][j].on_curve = flag & kFLAG_ONCURVE; | |
140 } | 142 } |
141 } | 143 } |
142 | 144 |
143 // Read the x coordinates. | 145 // Read the x coordinates. |
144 int prev_x = 0; | 146 int prev_x = 0; |
145 for (int i = 0; i < num_contours; ++i) { | 147 for (int i = 0; i < num_contours; ++i) { |
146 for (size_t j = 0; j < glyph->contours[i].size(); ++j) { | 148 for (size_t j = 0; j < glyph->contours[i].size(); ++j) { |
147 uint8_t flag = flags[i][j]; | 149 uint8_t flag = flags[i][j]; |
148 if (flag & kFLAG_XSHORT) { | 150 if (flag & kFLAG_XSHORT) { |
149 // single byte x-delta coord value | 151 // single byte x-delta coord value |
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371 StoreInstructions(glyph, &offset, dst); | 373 StoreInstructions(glyph, &offset, dst); |
372 if (!StorePoints(glyph, &offset, dst, *dst_size)) { | 374 if (!StorePoints(glyph, &offset, dst, *dst_size)) { |
373 return FONT_COMPRESSION_FAILURE(); | 375 return FONT_COMPRESSION_FAILURE(); |
374 } | 376 } |
375 } | 377 } |
376 *dst_size = offset; | 378 *dst_size = offset; |
377 return true; | 379 return true; |
378 } | 380 } |
379 | 381 |
380 } // namespace woff2 | 382 } // namespace woff2 |
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