mirror of
https://github.com/akatrevorjay/edid-generator.git
synced 2026-01-15 23:50:28 +01:00
100 lines
2.3 KiB
Bash
Executable File
100 lines
2.3 KiB
Bash
Executable File
#!/bin/zsh
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emulate -L zsh
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setopt errexit errreturn
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#setopt xtrace
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template-S() {
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[[ ${(L)1} = mode(|line) ]] || return 1
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echo "-- Found naughty unicorn: $@"
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shift 1
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local name="${1//\"}"
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[[ -z "$name" ]] && echo "Could not parse modeline: $@" >&2 && return 1
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local fn="${name}.S"
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local -F pixel_clock_mhz=$2
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local -i pixel_clock_khz=$((pixel_clock_mhz * 1000))
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shift 2
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local -i hdisp="$1" hsyncstart="$2" hsyncend="$3" htotal="$4"; shift 4
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local -i vdisp="$1" vsyncstart="$2" vsyncend="$3" vtotal="$4"; shift 4
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local -i hsync_polarity=0 vsync_polarity=0 dpi=96 vfreq_hz=60
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local edid_version="1.3" ratio="16:9" # TODO calc ratio
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local arg
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for arg in "$@"; do
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case "${(L)arg}" in
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[-+]hsync) [[ "${arg:1:1}" == "-" ]] || hsync_polarity=1 ;;
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[-+]vsync) [[ "${arg:1:1}" == "-" ]] || vsync_polarity=1 ;;
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ratio=*|xy_ratio=*) ratio="${arg#*=}" ;;
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dpi=*) dpi="${arg#*=}" ;;
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edid_version=*) edid_version="${arg#*=}" ;;
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vfreq=*|vfreq_hz=*) vfreq_hz="${arg#*=}" ;;
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*) echo "Ignoring unknown modeline option passed: '$arg'" >&2 ;;
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esac
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done
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local -A defines
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defines=(
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TIMING_NAME "${(qqq)name}"
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CLOCK "$pixel_clock_khz"
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XPIX "$hdisp"
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XBLANK "$((htotal - hdisp))"
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XOFFSET "$((hsyncstart - hdisp))"
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XPULSE "$((hsyncend - hsyncstart))"
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YPIX "$vdisp"
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YBLANK "$((vtotal - vdisp))"
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YOFFSET "(63+$((vsyncstart - vdisp)))"
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YPULSE "(63+$((vsyncend - vsyncstart)))"
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VERSION "${edid_version%%.*}"
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REVISION "${edid_version#*.}"
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XY_RATIO "XY_RATIO_${(U)ratio//:/_}"
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DPI "$dpi"
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VFREQ "$vfreq_hz"
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HSYNC_POL "$hsync_polarity"
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VSYNC_POL "$vsync_polarity"
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)
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local -a lines=('/* '"$name: $REPLY"' */')
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local k
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for k in ${(k)defines}; do
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lines+=("#define $k ${defines[$k]}")
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done
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lines+=('#include "edid.S"')
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echo "${(j:\n:)lines[@]}" > "$fn"
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echo "Wrote $fn"
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}
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local f=${1:-'-'}
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[[ $f != '-' ]] || f="/dev/stdin"
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if [[ -z "$f" || "$f" == "-h" ]]; then
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self=${0:t}
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cat >&2 <<-EOF
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Modeline2EDID, version forever 0.0.1
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Help:
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$self -h
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Parse modelines from stdin:
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$self
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$self -
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Parse modelines from a file (eg xorg.conf)
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$self FILENAME
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EOF
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exit 1
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fi
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echo "Searching for runaway unicorns in '$f'"
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while read; do
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# trim
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REPLY=($=REPLY)
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[[ -n "$REPLY" ]] || continue
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template-S ${(@)REPLY} || :
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done < $f
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