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在电视上观看 VLC 媒体时关闭所有显示器

tag-icon • tag-icon vlc external-monitor tv
在电视上观看 VLC 媒体时关闭所有显示器

有时我喜欢在连接到笔记本电脑的 HDMI 端口的电视上观看 VLC 媒体，现在我必须：

  • 在电视上启动 VLC：
    • 由CCSM定位在电视上。
    • VLC 正在关闭屏幕保护程序。
  • 关闭笔记本电脑
  • 关闭显示器（如果显示器打开）

因为我喜欢坐在黑暗里看电视！

有谁解决过以上已经为自己编写了脚本？

电视始终连接到 HDMI，显示器始终连接到 VGA 端口如果这能让事情变得更容易的话。

答案1

我编写了一个脚本，当键盘或鼠标 5 分钟不活动时，两个显示器会慢慢变暗，而您可以在第三个显示器上观看电影。当您移动鼠标或使用键盘时，两个变暗的显示器会快速变亮（但不会突然让您震惊）。

状态屏幕示例

movie.sh状态显示.png

在您认为我看电视太多之前，请注意这是一台笔记本电脑，并且该程序已经运行了很多天，并且笔记本电脑每天至少暂停/恢复两次。

设置说明

将下面的脚本保存到您的路径中的文件名（例如/usr/local/bin/movie.sh或）/home/your_user_name/bin/movie.sh，然后使用：

chmod a+x /path/to/script/movie.sh

Xorg 的软件包xprintidle需要跟踪你的计算机自鼠标移动或键盘活动以来处于空闲状态的时间：

sudo apt install xprintidle

然后启动脚本使用：

movie.sh

笔记：测试时，TIME_TO_FADE从改为，200000这样10000您只需等待 10 秒而不是 200 秒即可开始衰落。

剧本

#!/bin/bash

# NAME: movie.sh
# PATH: ~/eyesome
# DESC: Dim monitors 1 and 3 after 5 minutes of activity
# DATE: June 27, 2019. Modified November 5, 2019.
# PARM: Pass any parameter 1 to generate trace output

# UPDT: 2019-07-05 Add dependancy message. Improve sleep calcualation.
#       2019-09-01 Display how long dimming lasted in hours, minutes, seconds
#       2019-09-07 Do not brighten if toggling play / pause of movie with
#       mouse click or Enter key. Log first wake and if a second wake appears
#       within 1 to 3 seconds then wake up. Otherwise forget first wake signal.
#       2019-11-05 Replace scrolling messages with Statistics display.

: <<'END'
/* -----------------------------------------------------------------------------

CUSTOM NOTES
============
Put C-style free form notes here about disabling third party auto-brightness
sunrise / sunset applications like nightlight, redshift, flux, eyesome, etc.

CONFIGURATION FILE LOCATION
===========================
$ ll /usr/local/bin/.eyesome-cfg
-rw-r--r-- 1 root root 610 Jun 27 18:31 /usr/local/bin/.eyesome-cfg

CONFIGURATION FILE RECORD LAYOUT
================================
$ cat /usr/local/bin/.eyesome-cfg
https://www.timeanddate.com/sun/canada/edmonton|70.000000|120.000000|90.000000|
1.000000|TRUE| | | | |1|Disabled|Hardware|Alien 17" Builtin DIsplay|
intel_backlight|eDP-1-1|3500.000000|1.000000|1.000000|1.000000|850.000000|
1.000000|0.780000|0.650000|3500|1.000000:1.000000:1.000000| | | | |2|Enabled|
Software|Sony 50" TV|xrandr|HDMI-0|1.000000|1.000000|1.000000|1.000000|0.750000|
1.000000|0.950000|0.850000|1.00|1.000000:1.000000:1.000000| | | | |3|Disabled|
Software|Toshibal 43" 4K TV|xrandr|DP-1-1|1.000000|1.000000|1.000000|1.000000|
0.650000|1.000000|0.880000|0.780000|1.00|1.000000:1.000000:1.000000| | | | 

----------------------------------------------------------------------------- */
END

# If sudo powers not needed, eg no 3rd party auto-brightening to disable,
# then comment out the next four lines:
if [[ $(id -u) != 0 ]]; then # root powers needed to call this script
    echo >&2 "$0 must be called with sudo powers"
    exit 1
fi

command -v xprintidle >/dev/null 2>&1 || { echo >&2 \
        "xprintidle package required but it is not installed.  Aborting."; \
        exit 1; }

# To echo debug/trace statements to screen, pass any parameter to script
Debug=0
[[ $# -gt 0 ]] && Debug=1

# To get list of your monitors use: xrandr --verbose | grep " connected"
MON1="eDP-1-1"      # eDP-1-1 = Laptop display
MON2=""             # HDMI-0 = Sony TV
MON3="DP-1-1"       # DP-1-1 = Toshiba TV

# If you elect to turn backlight complete off and on you must use sudo
BACK="intel_backlight"  # Setting to blank means no backlight to turn off/on

# All seconds in millisconds, eg 1000 milliseconds = 1 second
TIME_TO_FADE=200000 # Keyboard/Mouse idle time before dim 300000 = 5 minutes
TIME_TO_WAKE=2000   # 2 second time or less to trigger brightening
FADE_SLEEP=.15      # When fading sleep seconds between monitor changes
WAKE_SLEEP=.025     # When waking sleep seconds between monitor changes

# Optional configurationfile for 3rd party auto brightnes / color temperature
CFG_FILE=""
# if nothing else is automatically controlling monitors comment out next line
CFG_FILE=/usr/local/bin/.eyesome-cfg

DisableAutoBright () {
    # Disable specific monitors from nightlight, redshift, flux, eyesome, ect.
    [[ $CFG_FILE == "" ]] && return # No third party apps
    [[ $MON1 != "" ]] && sed -i 's/1|Enabled/1|Disabled/g' "$CFG_FILE"
    [[ $MON2 != "" ]] && sed -i 's/2|Enabled/2|Disabled/g' "$CFG_FILE"
    [[ $MON3 != "" ]] && sed -i 's/3|Enabled/3|Disabled/g' "$CFG_FILE"
} # DisableAutoBright

EnableAutoBright () {
    # Renable specific monitors for nightlight, redshift, flux, eyesome, ect.
    [[ $CFG_FILE == "" ]] && return # No third party apps
    [[ $MON1 != "" ]] && sed -i 's/1|Disabled/1|Enabled/g' "$CFG_FILE"
    [[ $MON2 != "" ]] && sed -i 's/2|Disabled/2|Enabled/g' "$CFG_FILE"
    [[ $MON3 != "" ]] && sed -i 's/3|Disabled/3|Enabled/g' "$CFG_FILE"

    # Trigger 3rd party app to gradually set brightness based on sunrise/sunset
    /usr/local/bin/wake-eyesome.sh post eyesome-cfg.sh nosleep

} # EnableAutoBright

MonArr=()   # Index 0= Monitor # 1 to 3, 1=Xrandr Name, 2=Connected/Disconnected, 
            # 3=Save Bright "100"=1.0, 4=Current Bright "75"=0.75, 5=xprintidle cnt

PaintStats () {

    local i Image 

    Image=( \
    "╔═══════════════════════════════════════════════════════════════════╗"
    "║   movie.sh - Dim specific monitors when keyboard and mouse idle   ║"
    "╠═════════════════════════════════╤═════════════════════════════════╣"
    "║         Active Stats            │         Dimmed Stats            ║"
    "╟─────────────────────────────────┼─────────────────────────────────╢"
    "║ Total time:   1:30:22 (H:M:S)   │ Total Time:   0:30:25 (H:M:S)   ║"
    "║ Cycle Count:  999 cycles        │ Cycle Count:  999 cycles        ║"
    "║ Total checks: 9,999,999 checks  │ Total checks: 9,999,999 checks  ║"
    "╟─────────────────────────────────┼─────────────────────────────────╢"
    "║ This cycle:   99 Hours 99 Secs  │ Last cycle:   99 Hours 99 Secs  ║"
    "║ Last check:   Sat 1:52:39 pm    │ Dim started:  Sat 12:42:15 pm   ║"
    "║ Sleeping:     200 Seconds       │ Short wakes:  999 pause/plays   ║"
    "║ Next check:   Sat 1:53:49 pm    │ Dim ended:    Sat 1:31:08 pm    ║"
    "╚═════════════════════════════════╧═════════════════════════════════╝"
    )

    echo -e "\033[32m"  # Start green text
    for i in "${Image[@]}" ; do echo "$i" ; done
    echo -e "\033[0m"   # End green text

} # PaintStats        

PrintStr () {
    tput cup "$1" "$2" ; echo -e "                 "
    tput cup "$1" "$2" ; echo -e "$3"
} # PrintStr

PrintDig () {
    tput cup "$1" "$2" ; echo -e "                 "
    tput cup "$1" "$2" ; printf "%'d %s" "$3" "$4"
} # PrintDig

PrintDur () {

    local h m s FormattedElapsed
    (( h = ${3} / 3600 ))
    (( m = (${3}%3600) / 60 ))
    (( s = ${3}%60 ))
    FormattedElapsed="$h:$m:$s (H:M:S)"
    FormattedElapsed="$h""hr $m""mn $s""sc"

    tput cup "$1" "$2" ; echo -e "                 "
    PrintStr "$1" "$2" "$FormattedElapsed"
} # PrintDur

TotalActive=0
TotalDimmed=0
ActiveCount=1       # We are already active starting up
DimmedCount=0
ActiveChecks=0
DimmedChecks=0
ThisActiveTime=0
LastDimmedTime=0
LastActiveCheck=""
LastDimStarted=""
ActiveSleepTime=0
ShortCount=0
NextActiveCheck=""
LastDimEnded=""

UpdateStats () {

    tput sc             # Save Cursor
    echo -e "\033[36m"  # Start cyan text
    PrintDur  6 16 "$TotalActive"
    PrintDur  6 50 "$TotalDimmed"
    PrintDig  7 16 "$ActiveCount" "cycles"
    PrintDig  7 50 "$DimmedCount" "cycles"
    PrintDig  8 16 "$ActiveChecks" "checks"
    PrintDig  8 50 "$DimmedChecks" "checks"
    PrintDur 10 16 "$ThisActiveTime"
    PrintDur 10 50 "$LastDimmedTime"
    PrintStr 11 16 "$LastActiveCheck"
    PrintStr 11 50 "$LastDimStarted"
    PrintStr 12 16 "$ActiveSleepTime Seconds"
    PrintDig 12 50 "$ShortCount" "pause/plays"
    PrintStr 13 16 "$NextActiveCheck"
    PrintStr 13 50 "$LastDimEnded"
    echo -e "\033[0m"   # End cyan text
    tput rc             # Restore cursor
}
# UpdateStats

SetBrightness () {

    # Parm 1: XrandrMonitor Name
    # Parm 2: Math Brigthness Value
    local MON CurrBright
    MON="$1"
    MathBright="$2"

    [[ "${MathBright:0:1}" == "-" ]] && MathBright=0    # Negative not allowed
    [[ "$MathBright" -gt 999  ]] && MathBright=999      # Can't go over 9.99

    if [[ "${#MathBright}" -eq 3 ]] ; then
        MathBright="$MathBright"000         # Pad with lots of zeros
        CurrBright="${MathBright:0:1}.${MathBright:1:2}"
    elif [[ "${#MathBright}" -eq 1 ]] ; then
        CurrBright=".0$MathBright"
    else
        MathBright="$MathBright"000         # Pad with lots of zeros
        CurrBright=".${MathBright:0:2}"
    fi

    # Even if brigthness hasn't changed we want to set it each time so
    # that `xrandr` will lag sleep cycle by 25 milliseconds
    if [[ $CurrBright == ".0" ]] ; then
        xrandr --output "$MON" --off
    else    
        xrandr --output "$MON" --brightness "$CurrBright"   # Set new brightness
    fi
} # SetBrightness

GetCurrBright () {

    # Call this before starting to fade monitor. Parm1: Monitor Xrandr name
    # Setup for global variables failure
    MonMathBright="0"
    MonCurrBright="0.0"
    MonStatus="Disconnected"
    [[ $1 == "" ]] && return

    local CurrBright Left Right
    CurrBright=$( xrandr --verbose --current | \
                                      grep ^"$1 connected" -A5 | tail -n1 )
    [[ $CurrBright == "" ]] && { echo "$1 Monitor not found in xorg"; return; }

    MonStatus="Connected"
    MonCurrBright="${CurrBright##* }"  # Get brightness level with decimal place
    Left=${MonCurrBright%%"."*}        # Extract left of decimal point
    Right=${MonCurrBright#*"."}        # Extract right of decimal point

    [[ "$Left" != 0 ]] && MonMathBright="$Left"00   # 1.0 becomes "100"
    [[ "${#Right}" -eq 1 ]] && Right="$Right"0      # 0.5 becomes "50"
    MonMathBright=$(( MonMathBright + Right ))
    # ((Debug)) && echo "$MonName Starting brightness: $MonMathBright"

} # GetCurrBright

ConvertSeconds () {

    # Credit: https://stackoverflow.com/a/12199798/6929343
    local h m s
    ((h=${1}/3600))
    ((m=(${1}%3600)/60))
    ((s=${1}%60))
    printf "Monitor(s) dimmed for: "
    [[ $h -gt 0 ]] && printf "%d Hour(s) " $h
    [[ $m -gt 0 ]] && printf "%d Minute(s) " $m
    printf "%2d Second(s)\n" $s
    
} # ConvertSeconds

IgnoreShortWake () {

    # If this was just an accidental mouse movement or a singe Enter key to
    # pause / play movie then return false (1).

    local LastElapsed ShortTime
    LastElapsed=$(xprintidle)
    while true ; do
        sleep .1
        ShortTime=$(xprintidle)
        [[ $ShortTime -lt "$LastElapsed" ]] && return 0 # Real wakeup
        # User clicked play/pausse, incrment count and go back to sleep
        [[ $ShortTime -ge 3000           ]] && { (( ShortCount++ )); return 1; }
        LastElapsed="$ShortTime"    
    done

} # IgnoreShortWake

BrightenMonitors () {

    # If short mouse movement or single key press go back to sleep
    IgnoreShortWake
    [[ "$?" == "1" ]] && return 1   # Monitors not brightened

    # How long were we dimmed for?
    DimmingEnded="$SECONDS"
    DimmingDuration=$(( DimmingEnded - DimmingStarted ))
    TotalDimmed=$(( TotalDimmed + DimmingDuration ))

    (( ActiveCount++ ))
    ThisActiveTime=0

    # Turn monitor on and slowly raise brightness to saved setting
    [[ "$BACK" != "" && "$BackOff" == true ]] && \
        echo 0 > "/sys/class/backlight/$BACK/bl_power"
    BackOff=false

    local i m LastPercent NewMathBright
    LastPercent=0
    for (( m = 0 ; m < MonArrCnt ; m=m+MON_COL_CNT )); do   #loop for each monitor
        GetByNdx "$m"
        [[ $MonStatus == Disconnected ]] && continue
        # If dimming interrupted, start from last percentage and not 0%
        [[ $MonPercent -gt "$LastPercent" ]] && LastPercent="$MonPercent"
    done
#    if ((Debug)) ; then
#        echo Starting percentage: "$LastPercent"
#        ConvertSeconds "$DimmingDuration"
#    fi

    # Brighten by increments of 4% for quicker waking
    for (( i = LastPercent ; i <= 100 ; i=i+4 )); do    # loop from 0% to 100%
        [[ $i -ge 96 ]] && i=100 # If 96, next loop will be 100
        for (( m = 0 ; m < MonArrCnt ; m=m+MON_COL_CNT )); do   #loop for each monitor
            GetByNdx "$m"
            [[ $MonStatus == Disconnected ]] && continue
            [[ $MonMathBright -eq 0 ]] && MonMathBright=1
            NewMathBright=$(( MonMathBright * i / 100 ))
            SetBrightness "$MonName" "$NewMathBright"
            SetByNdx "$m"
            sleep "$WAKE_SLEEP"       # Very quick increase, so smaller sleep
        done
    done

    LastDimEnded=$(date +'%a %I:%M:%S %P')

    return 0        # Monitors were brigthened

} # BrightenMonitors

DimMonitors () {

    DimmingStarted="$SECONDS"
    LastDimmedTime=0
    (( DimmedCount++ ))
    local i m NewMathBright Elapsed
    for (( m = 0 ; m < MonArrCnt ; m=m+MON_COL_CNT )); do   #loop for each monitor
        GetByNdx "$m"
        # Get starting full brightness level, blank monitor name returns zeros
        GetCurrBright "$MonName"
        SetByNdx "$m"
    done

    # Dim by increments of 1% for slow fading
    for (( i = 100 ; i >= 0 ; i-- )); do    # loop from 100% to 0% brightness
        for (( m = 0 ; m < MonArrCnt ; m=m+MON_COL_CNT )); do   #loop for each monitor
            GetByNdx "$m"
            [[ $MonStatus == Disconnected ]] && continue
            NewMathBright=$(( MonMathBright * i / 100 ))
            SetBrightness "$MonName" "$NewMathBright"
            MonPercent="$i"
            SetByNdx "$m"
        done
        sleep "$FADE_SLEEP"         # slowly dim so longer sleep
        Elapsed=$(xprintidle)
        [[ $Elapsed -lt 2000 ]] && return
    done

    # Completely turn off laptop's backlight for "full black"
    [[ "$BACK" != "" ]] && echo 4 > "/sys/class/backlight/$BACK/bl_power"
    BackOff=true
    
    LastDimStarted=$(date +'%a %I:%M:%S %P')

} # DimMonitors

GetByNdx () {
    # Parm1 = index number, 0 = first monitor array entry
    MonNumber="${MonArr[$1]}"       # 3rd party monitor number, eg "3"
    MonName="${MonArr[$1+1]}"       # Xrandr Monitor name, eg "DP-1-1"
    MonStatus="${MonArr[$1+2]}"     # Xrandr Connected/Disconnected
    MonCurrBright="${MonArr[$1+3]}" # Value when dimming first starts eg 1.00
    MonMathBright="${MonArr[$1+4]}" # Math implied decimal 100 = 1.00, 50 = .5
    MonPercent="${MonArr[$1+5]}"    # Last percentage brightness set
} # GetByNdx

SetByNdx () {
    # Parm1 = index number, 0 = first monitor array entry
    MonArr[$1]="$MonNumber"         # 3rd party monitor number, eg "3"
    MonArr[$1+1]="$MonName"         # Xrandr Monitor name, eg "DP-1-1"
    MonArr[$1+2]="$MonStatus"       # Xrandr Connected/Disconnected
    MonArr[$1+3]="$MonCurrBright"   # Value when dimming first starts eg 1.00
    MonArr[$1+4]="$MonMathBright"   # Implied decimal 100 = 1.00, 50 = .5
    MonArr[$1+5]="$MonPercent"      # Last percentage brightness set
} # SetByNdx

InitializeMonArr () {

    # Initialize arrays with Xrandr name, status, curret bright, math bright, %
    MonArr=()
    MonArr+=( "1" "$MON1" "Cconnected" "1.0" "100" "0" )
    MonArr+=( "2" "$MON2" "Disconnected" ".0" "0" "0" )
    MonArr+=( "3" "$MON3" "Connected" "1.0" "100" "0" )

    MON_COL_CNT=6
    MonArrCnt="${#MonArr[@]}"

    # Dummy calls, but may not be necessary, test with delete later
    GetByNdx 0
    SetByNdx 0

} # InitializeMonArr

clear
PaintStats

Dimmed=false
InitializeMonArr
if ((Debug)) ; then
    echo ""
    echo "$(date +'%A %I:%M:%S %P') Starting movie.sh"
    echo ""
    echo "Monitor Array Dump: #, Name, Curr Bright, Math Bright, Last Percent"
    echo "${MonArr[*]}"
    echo ""
fi


# Loop until CTRL + C
while true ; do

    UpdateStats
    Elapsed=$(xprintidle)

    if [[ $Elapsed -lt "$TIME_TO_WAKE" ]] ; then
        if [[ $Dimmed == true ]] ; then

            # ((Debug)) && echo -e $'\n'"$(date) Wake after: $Elapsed milliseconds"
            TotalDimmed=$(( Elapsed / 1000 + TotalDimmed ))
            (( DimmedCount++ ))
            BrightenMonitors
            if [[ "$?" == "0" ]] ; then
                EnableAutoBright
                Dimmed=false
            else
                Elapsed=0       # Calculate new full sleep cycle below
            fi
        fi

    elif [[ $Elapsed -gt "$TIME_TO_FADE" ]] ; then
        if [[ $Dimmed == false ]] ; then

            # ((Debug)) && echo -e $'\n'"$(date) Fade after: $Elapsed milliseconds"
            TotalActive=$(( Elapsed / 1000 + TotalActive ))
            Dimmed=true
            DisableAutoBright
            DimMonitors
            continue    # Double check in case mouse moved during fade.
        fi
    fi

    if [[ "$Dimmed" == true ]] ; then
        # Be prepared to respond relatively instantly to mouse movement
        sleep 1
        (( DimmedChecks++ ))
        DimmedTime=$(( DimmedTime + 1 ))
        LastDimmedTime=$(( LastDimmedTime + 1 ))
        
    else
        # sleep until time to test for monitor fade
        SleepTime=$(( (TIME_TO_FADE - Elapsed + 1000) / 1000 ))
        [[ "$SleepTime" -lt 1 ]] && SleepTime=1
        # ((Debug)) && echo "$(date) Sleeping until next fade check: $SleepTime seconds"
        LastActiveCheck=$(date +'%a %I:%M:%S %P')
        ActiveSleepTime=$SleepTime
        NextActiveCheck=$(date +'%a %I:%M:%S %P' --date "$SleepTime seconds")
        ActiveTime=$(( ActiveTime + SleepTime ))
        TotalActive=$(( TotalActive + SleepTime ))
        (( ActiveChecks++ ))
        ThisActiveTime=$(( ThisActiveTime + SleepTime ))
        UpdateStats
        sleep "$SleepTime"
    fi
    
done

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