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comparison: gfx/ots/src/prep.cc
gfx/ots/src/prep.cc
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:431f57886322 |
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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "prep.h" | |
| 6 | |
| 7 // prep - Control Value Program | |
| 8 // http://www.microsoft.com/typography/otspec/prep.htm | |
| 9 | |
| 10 #define TABLE_NAME "prep" | |
| 11 | |
| 12 namespace ots { | |
| 13 | |
| 14 bool ots_prep_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { | |
| 15 Buffer table(data, length); | |
| 16 | |
| 17 OpenTypePREP *prep = new OpenTypePREP; | |
| 18 file->prep = prep; | |
| 19 | |
| 20 if (length >= 128 * 1024u) { | |
| 21 return OTS_FAILURE_MSG("table length %ld > 120K", length); // almost all prep tables are less than 9k bytes. | |
| 22 } | |
| 23 | |
| 24 if (!table.Skip(length)) { | |
| 25 return OTS_FAILURE_MSG("Failed to read table of length %ld", length); | |
| 26 } | |
| 27 | |
| 28 prep->data = data; | |
| 29 prep->length = length; | |
| 30 return true; | |
| 31 } | |
| 32 | |
| 33 bool ots_prep_should_serialise(OpenTypeFile *file) { | |
| 34 if (!file->glyf) return false; // this table is not for CFF fonts. | |
| 35 return g_transcode_hints && file->prep; | |
| 36 } | |
| 37 | |
| 38 bool ots_prep_serialise(OTSStream *out, OpenTypeFile *file) { | |
| 39 const OpenTypePREP *prep = file->prep; | |
| 40 | |
| 41 if (!out->Write(prep->data, prep->length)) { | |
| 42 return OTS_FAILURE_MSG("Failed to write table length"); | |
| 43 } | |
| 44 | |
| 45 return true; | |
| 46 } | |
| 47 | |
| 48 void ots_prep_free(OpenTypeFile *file) { | |
| 49 delete file->prep; | |
| 50 } | |
| 51 | |
| 52 } // namespace ots |
