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// Copyright (c) 2009-2017 The OTS 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 "cvt.h"
// cvt - Control Value Table
// http://www.microsoft.com/typography/otspec/cvt.htm
namespace ots {
bool OpenTypeCVT::Parse(const uint8_t *data, size_t length) {
Buffer table(data, length);
if (length >= 128 * 1024u) {
return Error("Length (%d) > 120K"); // almost all cvt tables are less than 4k bytes.
}
if (length % 2 != 0) {
return Error("Uneven table length (%d)", length);
}
if (!table.Skip(length)) {
return Error("Table length too high");
}
this->data = data;
this->length = length;
return true;
}
bool OpenTypeCVT::Serialize(OTSStream *out) {
if (!out->Write(this->data, this->length)) {
return Error("Failed to write cvt table");
}
return true;
}
bool OpenTypeCVT::ShouldSerialize() {
return Table::ShouldSerialize() &&
// this table is not for CFF fonts.
GetFont()->GetTable(OTS_TAG_GLYF) != NULL;
}
} // namespace ots
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