Starting CUBE-OS v0.1...

1 files changed, 27 insertions, 0 deletions

diff --git a/src/utils/MIODecoder.cpp b/src/utils/MIODecoder.cpp
new file mode 100644
index 0000000..aed5eba
--- /dev/null
+++ b/src/utils/MIODecoder.cpp
@@ -0,0 +1,27 @@
+#include "MIODecoder.h"
+
+extern "C" {
+#include <libmio0/mio0.h>
+}
+
+std::unordered_map<uint32_t, std::vector<char>> MIO0Decoder::gCachedChunks;
+
+std::vector<char>& MIO0Decoder::Decode(std::vector<uint8_t>& buffer, uint32_t offset) {
+    const unsigned char* in_buf = buffer.data() + offset;
+
+	mio0_header_t head;
+	if(!mio0_decode_header(in_buf, &head)){
+        throw std::runtime_error("Invalid MIO0 header");
+    }
+
+    uint8_t* decompressed = new uint8_t[head.dest_size];
+	mio0_decode(in_buf, decompressed, nullptr);
+    gCachedChunks[offset] = std::vector<char>(decompressed, decompressed + head.dest_size);
+
+    delete[] decompressed;
+    return gCachedChunks[offset];
+}
+
+void MIO0Decoder::ClearCache() {
+    gCachedChunks.clear();
+}
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