Match compression for gc-eu-mq (#1704)

* Improve compression

* Format

* Typo

* Use Python assignment expression in tools/dmadata.py

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>

* Review decompress_baserom.py

* Replace DEFINE_DEBUG_SCENE with CPP defines

* Pass is_zlib_compressed instead of version

* Reword NOLOAD comment in write_compress_ranges

* Remove redundant comment

---------

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>

tools/dmadata.py

@@ -0,0 +1,75 @@
+# SPDX-FileCopyrightText: © 2024 ZeldaRET
+# SPDX-License-Identifier: CC0-1.0
+
+from __future__ import annotations
+
+import dataclasses
+import struct
+
+
+STRUCT_IIII = struct.Struct(">IIII")
+
+
+@dataclasses.dataclass
+class DmaEntry:
+    """
+    A Python counterpart to the dmadata entry struct:
+    ```c
+    typedef struct {
+        /* 0x00 */ uintptr_t vromStart;
+        /* 0x04 */ uintptr_t vromEnd;
+        /* 0x08 */ uintptr_t romStart;
+        /* 0x0C */ uintptr_t romEnd;
+    } DmaEntry;
+    ```
+    """
+
+    vrom_start: int
+    vrom_end: int
+    rom_start: int
+    rom_end: int
+
+    def __repr__(self):
+        return (
+            "DmaEntry("
+            f"vrom_start=0x{self.vrom_start:08X}, "
+            f"vrom_end=0x{self.vrom_end:08X}, "
+            f"rom_start=0x{self.rom_start:08X}, "
+            f"rom_end=0x{self.rom_end:08X}"
+            ")"
+        )
+
+    SIZE_BYTES = STRUCT_IIII.size
+
+    def to_bin(self, data: memoryview):
+        STRUCT_IIII.pack_into(
+            data,
+            0,
+            self.vrom_start,
+            self.vrom_end,
+            self.rom_start,
+            self.rom_end,
+        )
+
+    @staticmethod
+    def from_bin(data: memoryview):
+        return DmaEntry(*STRUCT_IIII.unpack_from(data))
+
+    def is_compressed(self) -> bool:
+        return self.rom_end != 0
+
+
+DMA_ENTRY_END = DmaEntry(0, 0, 0, 0)
+
+
+def read_dmadata(rom_data: memoryview, start_offset: int) -> list[DmaEntry]:
+    result = []
+
+    offset = start_offset
+    while (
+        entry := DmaEntry.from_bin(rom_data[offset : offset + DmaEntry.SIZE_BYTES])
+    ) != DMA_ENTRY_END:
+        result.append(entry)
+        offset += DmaEntry.SIZE_BYTES
+
+    return result