1 files changed, 38 insertions, 0 deletions
diff --git a/lib/jpegli/simd.cc b/lib/jpegli/simd.cc
new file mode 100644
index 0000000..5e84939
--- /dev/null
+++ b/lib/jpegli/simd.cc
@@ -0,0 +1,38 @@
+// Copyright (c) the JPEG XL Project 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 "lib/jpegli/simd.h"
+
+#undef HWY_TARGET_INCLUDE
+#define HWY_TARGET_INCLUDE "lib/jpegli/simd.cc"
+#include <hwy/foreach_target.h>
+#include <hwy/highway.h>
+
+HWY_BEFORE_NAMESPACE();
+namespace jpegli {
+namespace HWY_NAMESPACE {
+
+size_t GetVectorSize() { return HWY_LANES(uint8_t); }
+
+// NOLINTNEXTLINE(google-readability-namespace-comments)
+}  // namespace HWY_NAMESPACE
+}  // namespace jpegli
+HWY_AFTER_NAMESPACE();
+
+#if HWY_ONCE
+namespace jpegli {
+namespace {
+
+HWY_EXPORT(GetVectorSize);  // Local function.
+
+}  // namespace
+
+size_t VectorSize() {
+  static size_t bytes = HWY_DYNAMIC_DISPATCH(GetVectorSize)();
+  return bytes;
+}
+
+}  // namespace jpegli
+#endif  // HWY_ONCE