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62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
from segtypes.n64.segment import N64Segment
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from util import options
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import png
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def parse_ci4(data, width, height):
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raster = bytearray()
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for i in range(width * height // 2):
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raster.append(data[i] >> 4)
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raster.append(data[i] & 0xF)
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return raster
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def next_8(n):
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if n % 8 != 0:
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return next_8(n + 1)
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else:
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return n
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class N64SegPm_charset(N64Segment):
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def scan(self, rom_bytes):
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data = rom_bytes[self.rom_start:self.rom_end]
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# start, type, name, WIDTH, HEIGHT, NUM_RASTERS
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self.width = self.yaml[3]
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self.height = self.yaml[4]
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# pm_charset_palettes sibling
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self.sibling = next(filter(lambda s: s.type == "pm_charset_palettes" and s.name == self.name, self.parent.subsegments))
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self.rasters = []
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for i in range(0, self.size, next_8(self.width * self.height // 2)):
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raster = parse_ci4(data[i:], self.width, self.height)
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self.rasters.append(raster)
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def split(self, rom_bytes):
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fs_dir = options.get_asset_path() / self.dir / self.name
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fs_dir.mkdir(parents=True, exist_ok=True)
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for i, raster in enumerate(self.rasters):
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palette = self.sibling.palettes[0]
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w = png.Writer(self.width, self.height, palette=palette)
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with open(fs_dir / f"{i:02X}.png", "wb") as f:
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w.write_array(f, raster)
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def get_linker_entries(self):
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from segtypes.linker_entry import LinkerEntry
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# start, type, name, WIDTH, HEIGHT
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self.width = self.yaml[3]
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self.height = self.yaml[4]
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fs_dir = options.get_asset_path() / self.dir / self.name
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return [LinkerEntry(
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self,
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[fs_dir / f"{i:02X}.png" for i in range(self.yaml[5])],
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fs_dir.with_suffix(".dat"), ".data"),
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]
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