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// Copyright (c) 2018 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 "cvar.h"
#include "fvar.h"
#include "variations.h"
namespace ots {
// -----------------------------------------------------------------------------
// OpenTypeCVAR
// -----------------------------------------------------------------------------
bool OpenTypeCVAR::Parse(const uint8_t* data, size_t length) {
Buffer table(data, length);
uint16_t majorVersion;
uint16_t minorVersion;
if (!table.ReadU16(&majorVersion) ||
!table.ReadU16(&minorVersion)) {
return Drop("Failed to read table header");
}
if (majorVersion != 1) {
return Drop("Unknown table version");
}
OpenTypeFVAR* fvar = static_cast<OpenTypeFVAR*>(
GetFont()->GetTypedTable(OTS_TAG_FVAR));
if (!fvar) {
return DropVariations("Required fvar table is missing");
}
if (!ParseVariationData(GetFont(), data + table.offset(), length - table.offset(),
fvar->AxisCount(), 0)) {
return Drop("Failed to parse variation data");
}
this->m_data = data;
this->m_length = length;
return true;
}
bool OpenTypeCVAR::Serialize(OTSStream* out) {
if (!out->Write(this->m_data, this->m_length)) {
return Error("Failed to write cvar table");
}
return true;
}
} // namespace ots
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