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Issue 1252363005: Update OTS to revision a7a3b94 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 4 months ago
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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "cvt.h" 5 #include "cvt.h"
6 6
7 // cvt - Control Value Table 7 // cvt - Control Value Table
8 // http://www.microsoft.com/typography/otspec/cvt.htm 8 // http://www.microsoft.com/typography/otspec/cvt.htm
9 9
10 #define TABLE_NAME "cvt" 10 #define TABLE_NAME "cvt"
11 11
12 namespace ots { 12 namespace ots {
13 13
14 bool ots_cvt_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { 14 bool ots_cvt_parse(Font *font, const uint8_t *data, size_t length) {
15 Buffer table(data, length); 15 Buffer table(data, length);
16 16
17 OpenTypeCVT *cvt = new OpenTypeCVT; 17 OpenTypeCVT *cvt = new OpenTypeCVT;
18 file->cvt = cvt; 18 font->cvt = cvt;
19 19
20 if (length >= 128 * 1024u) { 20 if (length >= 128 * 1024u) {
21 return OTS_FAILURE_MSG("Length (%d) > 120K"); // almost all cvt tables are less than 4k bytes. 21 return OTS_FAILURE_MSG("Length (%d) > 120K"); // almost all cvt tables are less than 4k bytes.
22 } 22 }
23 23
24 if (length % 2 != 0) { 24 if (length % 2 != 0) {
25 return OTS_FAILURE_MSG("Uneven cvt length (%d)", length); 25 return OTS_FAILURE_MSG("Uneven cvt length (%d)", length);
26 } 26 }
27 27
28 if (!table.Skip(length)) { 28 if (!table.Skip(length)) {
29 return OTS_FAILURE_MSG("Length too high"); 29 return OTS_FAILURE_MSG("Length too high");
30 } 30 }
31 31
32 cvt->data = data; 32 cvt->data = data;
33 cvt->length = length; 33 cvt->length = length;
34 return true; 34 return true;
35 } 35 }
36 36
37 bool ots_cvt_should_serialise(OpenTypeFile *file) { 37 bool ots_cvt_should_serialise(Font *font) {
38 if (!file->glyf) { 38 if (!font->glyf) {
39 return false; // this table is not for CFF fonts. 39 return false; // this table is not for CFF fonts.
40 } 40 }
41 return file->cvt != NULL; 41 return font->cvt != NULL;
42 } 42 }
43 43
44 bool ots_cvt_serialise(OTSStream *out, OpenTypeFile *file) { 44 bool ots_cvt_serialise(OTSStream *out, Font *font) {
45 const OpenTypeCVT *cvt = file->cvt; 45 const OpenTypeCVT *cvt = font->cvt;
46 46
47 if (!out->Write(cvt->data, cvt->length)) { 47 if (!out->Write(cvt->data, cvt->length)) {
48 return OTS_FAILURE_MSG("Failed to write CVT table"); 48 return OTS_FAILURE_MSG("Failed to write CVT table");
49 } 49 }
50 50
51 return true; 51 return true;
52 } 52 }
53 53
54 void ots_cvt_free(OpenTypeFile *file) { 54 void ots_cvt_reuse(Font *font, Font *other) {
55 delete file->cvt; 55 font->cvt = other->cvt;
56 font->cvt_reused = true;
57 }
58
59 void ots_cvt_free(Font *font) {
60 delete font->cvt;
56 } 61 }
57 62
58 } // namespace ots 63 } // namespace ots
59 64
60 #undef TABLE_NAME 65 #undef TABLE_NAME
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