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LibEDID: Fix calculating height and refresh rate for interlaced modes
The vertical values need to be multiplied with 2 for interlaced modes.
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parent
e04e52186d
commit
18fc54fc34
Notes:
sideshowbarker
2024-07-17 20:17:54 +09:00
Author: https://github.com/tomuta Commit: https://github.com/SerenityOS/serenity/commit/18fc54fc348 Pull-request: https://github.com/SerenityOS/serenity/pull/12116
@ -672,13 +672,19 @@ u16 Parser::DetailedTiming::horizontal_blanking_pixels() const
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return ((u16)high << 8) | (u16)low;
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}
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u16 Parser::DetailedTiming::vertical_addressable_lines() const
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u16 Parser::DetailedTiming::vertical_addressable_lines_raw() const
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{
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u8 low = m_edid.read_host(&m_detailed_timings.vertical_addressable_lines_low);
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u8 high = m_edid.read_host(&m_detailed_timings.vertical_addressable_and_blanking_lines_high) >> 4;
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return ((u16)high << 8) | (u16)low;
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}
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u16 Parser::DetailedTiming::vertical_addressable_lines() const
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{
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auto lines = vertical_addressable_lines_raw();
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return is_interlaced() ? lines * 2 : lines;
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}
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u16 Parser::DetailedTiming::vertical_blanking_lines() const
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{
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u8 low = m_edid.read_host(&m_detailed_timings.vertical_blanking_lines_low);
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@ -745,9 +751,9 @@ bool Parser::DetailedTiming::is_interlaced() const
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FixedPoint<16, u32> Parser::DetailedTiming::refresh_rate() const
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{
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// Blanking = front porch + sync pulse width = back porch
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// Blanking = front porch + sync pulse width + back porch
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u32 total_horizontal_pixels = (u32)horizontal_addressable_pixels() + (u32)horizontal_blanking_pixels();
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u32 total_vertical_lines = (u32)vertical_addressable_lines() + (u32)vertical_blanking_lines();
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u32 total_vertical_lines = (u32)vertical_addressable_lines_raw() + (u32)vertical_blanking_lines();
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u32 total_pixels = total_horizontal_pixels * total_vertical_lines;
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if (total_pixels == 0)
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return {};
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@ -349,6 +349,8 @@ public:
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{
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}
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u16 vertical_addressable_lines_raw() const;
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Parser const& m_edid;
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Definitions::DetailedTiming const& m_detailed_timings;
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};
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