57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
// Copyright (c) 2018 The OTS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "cvar.h"
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#include "fvar.h"
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#include "variations.h"
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namespace ots {
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// -----------------------------------------------------------------------------
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// OpenTypeCVAR
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// -----------------------------------------------------------------------------
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bool OpenTypeCVAR::Parse(const uint8_t* data, size_t length) {
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Buffer table(data, length);
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uint16_t majorVersion;
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uint16_t minorVersion;
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if (!table.ReadU16(&majorVersion) ||
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!table.ReadU16(&minorVersion)) {
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return Drop("Failed to read table header");
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}
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if (majorVersion != 1) {
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return Drop("Unknown table version");
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}
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OpenTypeFVAR* fvar = static_cast<OpenTypeFVAR*>(
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GetFont()->GetTypedTable(OTS_TAG_FVAR));
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if (!fvar) {
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return DropVariations("Required fvar table is missing");
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}
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if (!ParseVariationData(GetFont(), data + table.offset(), length - table.offset(),
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fvar->AxisCount(), 0)) {
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return Drop("Failed to parse variation data");
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}
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this->m_data = data;
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this->m_length = length;
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return true;
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}
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bool OpenTypeCVAR::Serialize(OTSStream* out) {
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if (!out->Write(this->m_data, this->m_length)) {
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return Error("Failed to write cvar table");
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}
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return true;
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}
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} // namespace ots
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