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video: Don't set sync polarity when calculating modes (#611)

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The polarity setting is shared between analog and digital output, so
changing it when calculatinga video mode can interfere with analog
video output. If someone has a need to use a specific polarity they
can specify it as part of the video_mode.
This commit is contained in:
Martin Donlon
2022-05-22 01:58:14 -07:00
committed by GitHub
parent 168aae3f07
commit e1a58541c0
1 changed files with 2 additions and 5 deletions
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7
video.cpp
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@@ -2649,15 +2649,12 @@ static void video_calculate_cvt(int h_pixels, int v_lines, float refresh_rate, b
vmode->item[7] = v_sync;
vmode->item[8] = v_back_porch;
vmode->param.rb = reduced_blanking ? 1 : 0;
vmode->param.hpol = reduced_blanking ? 1 : 0;
vmode->param.vpol = reduced_blanking ? 0 : 1;
vmode->Fpix = pixel_freq;
printf("Calculated %dx%d@%0.1fhz %s timings: %d,%d,%d,%d,%d,%d,%d,%d,%d,%s,%cvsync,%chsync\n",
printf("Calculated %dx%d@%0.1fhz %s timings: %d,%d,%d,%d,%d,%d,%d,%d,%d,%s\n",
h_pixels, v_lines, refresh_rate, reduced_blanking ? "CVT-RB" : "CVT",
vmode->item[1], vmode->item[2], vmode->item[3], vmode->item[4],
vmode->item[5], vmode->item[6], vmode->item[7], vmode->item[8],
(int)(pixel_freq * 1000.0f),
reduced_blanking ? "cvtrb" : "cvt",
vmode->param.vpol ? '+' : '-', vmode->param.hpol ? '+' : '-');
reduced_blanking ? "cvtrb" : "cvt");
}