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 "fpgm.h"
6
7// fpgm - Font Program
8// http://www.microsoft.com/opentype/otspec/fpgm.htm
9
10namespace ots {
11
12bool ots_fpgm_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
13  Buffer table(data, length);
14
15  OpenTypeFPGM *fpgm = new OpenTypeFPGM;
16  file->fpgm = fpgm;
17
18  if (length >= 128 * 1024u) {
19    return OTS_FAILURE();  // almost all fpgm tables are less than 5k bytes.
20  }
21
22  if (!table.Skip(length)) {
23    return OTS_FAILURE();
24  }
25
26  fpgm->data = data;
27  fpgm->length = length;
28  return true;
29}
30
31bool ots_fpgm_should_serialise(OpenTypeFile *file) {
32  if (!file->glyf) return false;  // this table is not for CFF fonts.
33  return g_transcode_hints && file->fpgm;
34}
35
36bool ots_fpgm_serialise(OTSStream *out, OpenTypeFile *file) {
37  const OpenTypeFPGM *fpgm = file->fpgm;
38
39  if (!out->Write(fpgm->data, fpgm->length)) {
40    return OTS_FAILURE();
41  }
42
43  return true;
44}
45
46void ots_fpgm_free(OpenTypeFile *file) {
47  delete file->fpgm;
48}
49
50}  // namespace ots
51