summaryrefslogtreecommitdiffstats
path: root/gfx/ots/src/cvar.cc
diff options
context:
space:
mode:
Diffstat (limited to 'gfx/ots/src/cvar.cc')
-rw-r--r--gfx/ots/src/cvar.cc56
1 files changed, 56 insertions, 0 deletions
diff --git a/gfx/ots/src/cvar.cc b/gfx/ots/src/cvar.cc
new file mode 100644
index 0000000000..a2bad7a15e
--- /dev/null
+++ b/gfx/ots/src/cvar.cc
@@ -0,0 +1,56 @@
+// 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