1 files changed, 43 insertions, 0 deletions
diff --git a/src/core/file_sys/fssystem/fssystem_compression_common.h b/src/core/file_sys/fssystem/fssystem_compression_common.h
new file mode 100644
index 000000000..266e0a7e5
--- /dev/null
+++ b/src/core/file_sys/fssystem/fssystem_compression_common.h
@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/result.h"
+
+namespace FileSys {
+
+enum class CompressionType : u8 {
+    None = 0,
+    Zeros = 1,
+    Two = 2,
+    Lz4 = 3,
+    Unknown = 4,
+};
+
+using DecompressorFunction = Result (*)(void*, size_t, const void*, size_t);
+using GetDecompressorFunction = DecompressorFunction (*)(CompressionType);
+
+constexpr s64 CompressionBlockAlignment = 0x10;
+
+namespace CompressionTypeUtility {
+
+constexpr bool IsBlockAlignmentRequired(CompressionType type) {
+    return type != CompressionType::None && type != CompressionType::Zeros;
+}
+
+constexpr bool IsDataStorageAccessRequired(CompressionType type) {
+    return type != CompressionType::Zeros;
+}
+
+constexpr bool IsRandomAccessible(CompressionType type) {
+    return type == CompressionType::None;
+}
+
+constexpr bool IsUnknownType(CompressionType type) {
+    return type >= CompressionType::Unknown;
+}
+
+} // namespace CompressionTypeUtility
+
+} // namespace FileSys