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perf(map): vectorize Q10 palette rasterization using PIL P-mode #971

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perf(map): vectorize Q10 palette rasterization using PIL P-mode #971

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8 changes: 4 additions & 4 deletions roborock/map/b01_q10_map_parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -837,10 +837,10 @@ def parsed_from_packet(self, packet: Q10MapPacket) -> ParsedMapData:
def _render(self, packet: Q10MapPacket) -> Image.Image:
"""Render the Q10 grid with the V1 map palette."""
palette = _build_palette(packet.grid, packet.width)
rgba = bytearray()
for value in packet.grid:
rgba.extend(palette[value])
img = Image.frombytes("RGBA", (packet.width, packet.height), bytes(rgba))
flat_palette = [channel for color in palette for channel in color]
p_img = Image.frombytes("P", (packet.width, packet.height), packet.grid)
p_img.putpalette(flat_palette, rawmode="RGBA")
img = p_img.convert("RGBA")
# The ss07 grid is stored top-down (row 0 = top of the home), so it is
# rendered as-is -- unlike the V1/Q7 convention, no vertical flip.
scale = self._config.map_scale
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