1 files changed, 26 insertions, 0 deletions
diff --git a/lib/jpegli/upsample.h b/lib/jpegli/upsample.h
new file mode 100644
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--- /dev/null
+++ b/lib/jpegli/upsample.h
@@ -0,0 +1,26 @@
+// 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.
+
+#ifndef LIB_JPEGLI_UPSAMPLE_H_
+#define LIB_JPEGLI_UPSAMPLE_H_
+
+#include <stddef.h>
+
+#include "lib/jxl/base/compiler_specific.h"
+
+namespace jpegli {
+
+void Upsample2Horizontal(float* JXL_RESTRICT row,
+                         float* JXL_RESTRICT scratch_space, size_t len_out);
+
+void Upsample2Vertical(const float* JXL_RESTRICT row_top,
+                       const float* JXL_RESTRICT row_mid,
+                       const float* JXL_RESTRICT row_bot,
+                       float* JXL_RESTRICT row_out0,
+                       float* JXL_RESTRICT row_out1, size_t len);
+
+}  // namespace jpegli
+
+#endif  // LIB_JPEGLI_UPSAMPLE_H_