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LibVideo: Implement CICP color space conversion

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This adds a struct called CodingIndependentCodePoints and related enums
that are used by video codecs to define its color space that frames
must be converted from when displaying a video.

Pre-multiplied matrices and lookup tables are stored to avoid most of
the floating point division and exponentiation in the conversion.
This commit is contained in:
Zaggy1024 2022-10-10 05:03:57 -05:00 • committed by Andreas Kling
parent ba79de0439
commit cd127b65c3
15 changed files with 935 additions and 18 deletions
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6
Userland/Libraries/LibVideo/VP9/Parser.cpp
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@ -136,8 +136,8 @@ DecoderErrorOr<FrameType> Parser::read_frame_type()
DecoderErrorOr<ColorRange> Parser::read_color_range()
{
if (TRY_READ(m_bit_stream->read_bit()))
return FullSwing;
return StudioSwing;
return ColorRange::Full;
return ColorRange::Studio;
}
/* (6.2) */
@ -273,7 +273,7 @@ DecoderErrorOr<void> Parser::color_config()
m_subsampling_y = true;
}
} else {
m_color_range = FullSwing;
m_color_range = ColorRange::Full;
if (m_profile == 1 || m_profile == 3) {
m_subsampling_x = false;
m_subsampling_y = false;