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LibGfx/CCITT: Introduce the invert helper

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This function turns Black into White and White into Black.
This commit is contained in:
Lucas CHOLLET 2024-02-15 15:56:27 -05:00 • committed by Jelle Raaijmakers
parent ce0ac70416
commit d54dbdae5e
1 changed files with 6 additions and 1 deletions
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7
Userland/Libraries/LibGfx/ImageFormats/CCITTDecoder.cpp
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@ -267,6 +267,11 @@ Optional<Code> get_terminal_code(Color color, u16 code_word, u8 code_size)
constexpr auto const ccitt_white = Color::NamedColor::White;
constexpr auto const ccitt_black = Color::NamedColor::Black;
Color invert(Color current_color)
{
return current_color == ccitt_white ? ccitt_black : ccitt_white;
}
ErrorOr<void> decode_single_ccitt3_1d_line(BigEndianInputBitStream& input_bit_stream, BigEndianOutputBitStream& decoded_bits, u32 image_width)
{
// We always flip the color when entering the loop, so let's initialize the
@ -284,7 +289,7 @@ ErrorOr<void> decode_single_ccitt3_1d_line(BigEndianInputBitStream& input_bit_st
continue;
}
current_color = current_color == ccitt_white ? ccitt_black : ccitt_white;
current_color = invert(current_color);
u8 size {};
u16 potential_code {};