52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
import struct, zlib, os
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IN_BIN = r"K:\ghidra\Crusader_Decomp\binary\Crusader - No Remorse Memdump Weapons.bin"
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OUT_PNG = r"K:\ghidra\Crusader_Decomp\binary\crop_weapon_row_nopil.png"
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W,H = 1024,512
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# box: left,top,right,bot (exclusive right/bot matching PIL convention)
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left,top,right,bot = 80,44,360,92
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w = right - left
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h = bot - top
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with open(IN_BIN,'rb') as f:
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data = f.read()
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count = min(len(data)//2, W*H)
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# build rows
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rows = []
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for y in range(H):
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row = bytearray()
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for x in range(W):
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i = y*W + x
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if i < count:
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off = i*2
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val = data[off] | (data[off+1]<<8)
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b = (val & 0x1F) << 3
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g = ((val >>5) & 0x1F) << 3
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r = ((val >>10) & 0x1F) << 3
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else:
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r=g=b=0
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row.extend([r,g,b])
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rows.append(bytes(row))
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# compose crop raw (PNG filter 0 per row)
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rawrows = []
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for y in range(top, top+h):
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rawrows.append(b"\x00" + rows[y][left*3:(left+w)*3])
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raw = b"".join(rawrows)
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comp = zlib.compress(raw, level=9)
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def chunk(t,d):
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out = struct.pack('>I', len(d)) + t + d
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crc = zlib.crc32(t + d) & 0xffffffff
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out += struct.pack('>I', crc)
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return out
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png = b"\x89PNG\r\n\x1a\n"
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png += chunk(b'IHDR', struct.pack('>IIBBBBB', w, h, 8, 2, 0, 0, 0))
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png += chunk(b'IDAT', comp)
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png += chunk(b'IEND', b'')
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with open(OUT_PNG, 'wb') as f:
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f.write(png)
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# compute file offsets
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start_idx = top*W + left
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end_idx = (top+h-1)*W + (left + w -1)
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so = start_idx * 2
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eo = ((end_idx)+1)*2 -1
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print('wrote', OUT_PNG)
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print(f'pixel box=({left},{top})-({left+w-1},{top+h-1}) size={w}x{h}')
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print(f'vram byte offsets: 0x{so:06x}-0x{eo:06x} (inclusive)')
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