gfx/ots/src/fpgm.cc
author Gregory Szorc <gps@mozilla.com>
Wed, 28 Jan 2015 13:37:00 -0800
branchMOBILE90_2011121217_RELBRANCH
changeset 120109 1f9976832e10e2758e4b12f7e973334169d3def7
parent 55080 6d49509b28a42a6c71be97963db37adc7b94ddc9
permissions -rw-r--r--
Close old release branch MOBILE90_2011121217_RELBRANCH

// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "fpgm.h"

// fpgm - Font Program
// http://www.microsoft.com/opentype/otspec/fpgm.htm

namespace ots {

bool ots_fpgm_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
  Buffer table(data, length);

  OpenTypeFPGM *fpgm = new OpenTypeFPGM;
  file->fpgm = fpgm;

  if (length >= 128 * 1024u) {
    return OTS_FAILURE();  // almost all fpgm tables are less than 5k bytes.
  }

  if (!table.Skip(length)) {
    return OTS_FAILURE();
  }

  fpgm->data = data;
  fpgm->length = length;
  return true;
}

bool ots_fpgm_should_serialise(OpenTypeFile *file) {
  if (!file->glyf) return false;  // this table is not for CFF fonts.
  return g_transcode_hints && file->fpgm;
}

bool ots_fpgm_serialise(OTSStream *out, OpenTypeFile *file) {
  const OpenTypeFPGM *fpgm = file->fpgm;

  if (!out->Write(fpgm->data, fpgm->length)) {
    return OTS_FAILURE();
  }

  return true;
}

void ots_fpgm_free(OpenTypeFile *file) {
  delete file->fpgm;
}

}  // namespace ots