43 lines
942 B
Bash
43 lines
942 B
Bash
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#!/bin/bash
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# Not my own work. Credit to original author
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#----- Optimized bars animation without much CPU usage increase --------
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bar="▁▂▃▄▅▆▇█"
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dict="s/;//g"
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# Calculate the length of the bar outside the loop
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bar_length=${#bar}
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# Create dictionary to replace char with bar
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for ((i = 0; i < bar_length; i++)); do
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dict+=";s/$i/${bar:$i:1}/g"
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done
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# Create cava config
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config_file="/tmp/bar_cava_config"
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cat >"$config_file" <<EOF
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[general]
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# Older systems show significant CPU use with default framerate
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# Setting maximum framerate to 30
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# You can increase the value if you wish
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framerate = 60
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bars = 14
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[input]
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method = pulse
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source = auto
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[output]
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method = raw
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raw_target = /dev/stdout
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data_format = ascii
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ascii_max_range = 7
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EOF
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# Kill cava if it's already running
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pkill -f "cava -p $config_file"
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# Read stdout from cava and perform substitution in a single sed command
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cava -p "$config_file" | sed -u "$dict"
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