From 4cae44160693e1beb562e39dc301bd42278be1f9 Mon Sep 17 00:00:00 2001
From: briaguya <70942617+briaguya0@users.noreply.github.com>
Date: Fri, 24 Jul 2026 18:09:55 -0400
Subject: oot support (#219)

---
 src/utils/Decompressor.cpp | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

(limited to 'src/utils/Decompressor.cpp')

diff --git a/src/utils/Decompressor.cpp b/src/utils/Decompressor.cpp
index c591f6c..c787282 100644
--- a/src/utils/Decompressor.cpp
+++ b/src/utils/Decompressor.cpp
@@ -10,6 +10,7 @@ extern "C" {
 #include <libmio0/mio0.h>
 #include <libyay0/yay0.h>
 #include <libyay0/yay1.h>
+#include <libyaz0/yaz0.h>
 #include <libmio0/tkmk00.h>
 }
 
@@ -92,6 +93,17 @@ DataChunk* Decompressor::Decode(const std::vector<uint8_t>& buffer, const uint32
                                          " compressed size 0x" + Torch::to_hex(in_size, false) + ")");
             }
         }
+        case CompressionType::YAZ0: {
+            uint32_t size = 0;
+            uint8_t* decompressed = yaz0_decode(in_buf, &size);
+
+            if (!decompressed) {
+                throw std::runtime_error("Failed to decode YAZ0");
+            }
+
+            gCachedChunks[offset] = new DataChunk{ decompressed, size };
+            return gCachedChunks[offset];
+        }
         default:
             throw std::runtime_error("Unknown compression type");
     }
@@ -196,7 +208,8 @@ DecompressedData Decompressor::AutoDecode(YAML::Node& node, std::vector<uint8_t>
     switch (type) {
         case CompressionType::YAY0:
         case CompressionType::YAY1:
-        case CompressionType::MIO0: {
+        case CompressionType::MIO0:
+        case CompressionType::YAZ0: {
             offset = ASSET_PTR(offset);
 
             auto decoded = Decode(buffer, fileOffset, type);
@@ -246,9 +259,6 @@ DecompressedData Decompressor::AutoDecode(YAML::Node& node, std::vector<uint8_t>
                         offset, fileOffset, offsetFromFile, sizeEntry.value(), decoded->size, size);
             return { .root = decoded, .segment = { decoded->data + offsetFromFile, size } };
         }
-        case CompressionType::YAZ0:
-            throw std::runtime_error(
-                "Found compressed yaz0 segment.\nDecompression of yaz0 has not been implemented yet.");
         case CompressionType::None: // The data does not have compression
         {
             fileOffset = TranslateAddr(offset, false);
@@ -293,7 +303,7 @@ DecompressedData Decompressor::AutoDecode(uint32_t offset, std::optional<size_t>
 }
 
 uint32_t Decompressor::TranslateAddr(uint32_t addr, bool baseAddress) {
-    if (IS_SEGMENTED(addr)) {
+    if (IS_SEGMENTED(addr) || IS_VIRTUAL_SEGMENT(addr)) {
         const auto segment = Companion::Instance->GetFileOffsetFromSegmentedAddr(SEGMENT_NUMBER(addr));
         if (!segment.has_value()) {
             const auto compressedSegmentPair =
-- 
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