mirror of
https://github.com/fish-shell/fish-shell
synced 2024-09-20 22:42:04 +00:00
321 lines
13 KiB
Fish
321 lines
13 KiB
Fish
function __fish_ffmpeg_last_arg
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echo (commandline -co)[-1]
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end
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# Allow completions to match against an argument that includes a stream specifier, e.g. -c:v:2
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function __fish_ffmpeg_complete_regex
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set -l regex $argv[1]
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set -l completions $argv[2..-1]
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complete -x -c ffmpeg -n "__fish_ffmpeg_last_arg | string match -rq -- '^'\"$regex\"'(\$|:)'" \
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-a "$completions"
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end
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function __fish_ffmpeg_help_type
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printf '%s\t%s\n' long "Print more options"
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printf '%s\t%s\n' full "Print all options"
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for help_type in decoder encoder demuxer muxer filter
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set -l regex
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if test $help_type = filter
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set regex '\S+\s+(\S+)\s+\S+\s+(\S+)'
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else
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set regex '\S+\s+(\S+)\s+(\S+)'
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end
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printf '%s\n' $help_type=(ffmpeg -loglevel quiet -"$help_type"s | string trim \
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| string match -rv '=|:$|^-' | string replace -rf "$regex" '$1\t$2')
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end
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end
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function __fish_ffmpeg_codec_list
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printf '%s\t%s\n' copy "Stream copy"
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set -l identifier
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switch $argv[1]
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case video
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set identifier '^V.*'
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case audio
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set identifier '^A.*'
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case subtitle
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set identifier '^S.*'
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case all
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set identifier '.*'
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case '*'
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return 1
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end
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printf '%s\n' (ffmpeg -loglevel quiet -decoders | string trim | string match -rv '=|:$|^-' \
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| string match -r "$identifier" | string replace -rf '\S+\s+(\S+)\s+(\S+)' '$1\t$2')
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end
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function __fish_ffmpeg_pix_fmts
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# We can't know in advance if the intention is to specify an output pix_fmt because the intent
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# could be to instead provide a second input, but we can rule out an output if no input has
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# been specified
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set -l regex_filter '.'
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if contains -- -i (commandline -co)
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set regex_filter '^I'
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end
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ffmpeg -hide_banner -loglevel quiet -pix_fmts |
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# tail -n +9 | # skip past header
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string match -rv '[:=-]|FLAGS' | # skip past header
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string match -er $regex_filter |
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string replace -rf '^[IOHPB.]{5} (\S+) .*' '$1'
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end
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function __fish_ffmpeg_filters
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# TODO: Figure out how to distinguish {audio,video} source and destination, because some filters
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# can go cross those lines (e.g. showvolume, which generates a video representation of the input
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# audio).
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set -l filter '.'
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switch $argv[1]
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case video
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set filter '[V]\S*->|->\S*[V]'
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case audio
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set filter '[A]\S*->|->\S*[A]'
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case all
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case '*'
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set filter '.'
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end
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ffmpeg -hide_banner -loglevel quiet -filters |
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string match -e -- '->' | # skip past the header
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string match -er $filter |
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string replace -rf '^ [TSC.]{3} +(\S+) +\S+->\S+ +(.*)' '$1\t$2'
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end
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function __fish_ffmpeg_presets
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set -l cmdline (commandline)
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if string match -ireq '[hx]26[45]'
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printf "%s\n" ultrafast superfast veryfast faster fast medium slow slower veryslow placebo
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end
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end
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function __fish_ffmpeg_tunes
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set -l cmdline (commandline)
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if string match -req 264
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printf "%s\n" film animation grain stillimage fastdecode zerolatency psnr ssim
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end
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if string match -req '265|hevc'
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printf "%s\n" psnr ssim grain zerolatency fastdecode
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end
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end
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function __fish_ffmpeg_crfs
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seq 1 30
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end
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function __fish_ffmpeg_profile
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if string match -req 264
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printf "%s\n" baseline main high
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end
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if string match -req '265|hevc'
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printf "%s\n" main high
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end
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end
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function __fish_ffmpeg_formats
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# TODO: Use heuristic to determine input vs output format and filter accordingly
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ffmpeg -hide_banner -loglevel quiet -formats | string replace -rf '^ [DE.]{2} ([a-z0-9_]+) +(\S.+)$' '$1\t$2'
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end
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complete -c ffmpeg -s i -d "Specify input file"
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# Print help / information / capabilities
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complete -c ffmpeg -s L -d "Show license"
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complete -x -c ffmpeg -s h -s "?" -o help -l help -a "(__fish_ffmpeg_help_type)" -d "Show help"
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complete -c ffmpeg -o version -d "Show version"
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complete -c ffmpeg -o buildconf -d "Show build configuration"
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complete -c ffmpeg -o formats -d "Show available formats"
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complete -c ffmpeg -o muxers -d "Show available muxers"
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complete -c ffmpeg -o demuxers -d "Show available demuxers"
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complete -c ffmpeg -o devices -d "Show available devices"
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complete -c ffmpeg -o codecs -d "Show available codecs"
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complete -c ffmpeg -o decoders -d "Show available decoders"
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complete -c ffmpeg -o encoders -d "Show available encoders"
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complete -c ffmpeg -o bsfs -d "Show available bit stream filters"
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complete -c ffmpeg -o protocols -d "Show available protocols"
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complete -c ffmpeg -o filters -d "Show available filters"
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complete -c ffmpeg -o pix_fmts -d "Show available pixel formats"
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complete -c ffmpeg -o layouts -d "Show standard channel layouts"
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complete -c ffmpeg -o sample_fmts -d "Show available audio sample formats"
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complete -c ffmpeg -o colors -d "Show available color names"
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complete -c ffmpeg -o sources -d "List sources of the input device"
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complete -c ffmpeg -o sinks -d "List sinks of the output device"
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complete -c ffmpeg -o hwaccels -d "Show available HW acceleration methods"
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# Global options
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complete -x -c ffmpeg -o loglevel -s v \
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-a "quiet panic fatal error warning info verbose debug trace" -d "Set logging level"
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complete -c ffmpeg -o report -d "Generate a report"
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complete -c ffmpeg -o max_alloc -d "Set maximum size of a single allocated block"
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complete -c ffmpeg -s y -d "Overwrite output files"
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complete -c ffmpeg -s n -d "Never overwrite output files"
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complete -c ffmpeg -o ignore_unknown -d "Ignore unknown stream types"
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complete -c ffmpeg -o filter_threads -d "Number of non-complex filter threads"
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complete -c ffmpeg -o filter_complex_threads -d "Number of threads for -filter_complex"
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complete -c ffmpeg -o stats -d "Print progress report during encoding"
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complete -c ffmpeg -o max_error_rate -d "Ratio of errors"
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complete -c ffmpeg -o bits_per_raw_sample -d "Set the number of bits per raw sample"
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complete -c ffmpeg -o vol -d "Change audio volume"
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# Per-file main options
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complete -c ffmpeg -s f -d "Force format" -xa "(__fish_ffmpeg_formats)"
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complete -c ffmpeg -s c -o codec -d "Codec name" -xa "(__fish_ffmpeg_codec_list all)"
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complete -c ffmpeg -o map_metadata -d "Set metadata information of outfile from infile"
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complete -c ffmpeg -s t -d "Record or transcode \"duration\" seconds of audio/video"
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complete -c ffmpeg -o to -d "Record or transcode stop time"
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complete -c ffmpeg -o fs -d "Set the limit file size in bytes"
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complete -c ffmpeg -o ss -d "Set the start time offset"
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complete -c ffmpeg -o seek_timestamp -d "Enable/disable seeking by timestamp with -ss"
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complete -c ffmpeg -o timestamp -d "Set the recording timestamp"
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complete -c ffmpeg -o metadata -d "Add metadata"
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complete -c ffmpeg -o program -d "Add program with specified streams"
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complete -x -c ffmpeg -o target -a '(for target in vcd svcd dvd dv dv50 ; echo "$target" ; \
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echo pal-"$target" ; echo ntsc-"$target" ; echo film-"$target" ; end)' \
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-d "Specify target file type"
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complete -c ffmpeg -o apad -d "Audio pad"
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complete -c ffmpeg -o frames -d "Set the number of frames to output"
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complete -c ffmpeg -o filter -d "Set stream filtergraph"
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complete -c ffmpeg -o filter_script -d "Read stream filtergraph description from a file"
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complete -c ffmpeg -o reinit_filter -d "Reinit filtergraph on input parameter changes"
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complete -c ffmpeg -o discard -d Discard
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complete -c ffmpeg -o disposition -d Disposition
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# Video options
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complete -c ffmpeg -o vframes -d "Set the number of video frames to output"
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complete -c ffmpeg -s r -d "Set frame rate"
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complete -c ffmpeg -s s -d "Set frame size"
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complete -c ffmpeg -o aspect -d "Set aspect ratio"
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complete -c ffmpeg -o bits_per_raw_sample -d "Set the number of bits per raw sample"
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complete -c ffmpeg -o vn -d "Disable video"
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complete -c ffmpeg -o vcodec -o "codec:v" -o "c:v"
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# Also list codecs when a particular stream is selected, e.g. -c:v:0
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__fish_ffmpeg_complete_regex "-(vcodec|c(odec)?:v)" "(__fish_ffmpeg_codec_list video)"
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complete -c ffmpeg -o timecode -d "Set initial TimeCode value"
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complete -x -c ffmpeg -o pass -a "1 2 3" -d "Select the pass number"
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complete -c ffmpeg -o vf -d "Set video filters"
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complete -c ffmpeg -o ab -o "b:a" -d "Audio bitrate"
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complete -c ffmpeg -s b -o "b:v" -d "Video bitrate"
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complete -c ffmpeg -o dn -d "Disable data"
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# Advanced video options
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complete -c ffmpeg -o pix_fmt
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__fish_ffmpeg_complete_regex -pix_fmt "(__fish_ffmpeg_pix_fmts)"
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# Audio options
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complete -c ffmpeg -o aframes -d "Set the number of audio frames to output"
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complete -c ffmpeg -o aq -d "Set audio quality"
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complete -c ffmpeg -o ar -d "Set audio sampling rate"
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complete -c ffmpeg -o ac -d "Set number of audio channels"
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complete -c ffmpeg -o an -d "Disable audio"
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complete -c ffmpeg -o acodec -o "codec:a" -o "c:a"
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__fish_ffmpeg_complete_regex '-(acodec|c(odec)?:a)' "(__fish_ffmpeg_codec_list audio)"
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complete -c ffmpeg -o vol -d "Change audio volume"
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complete -c ffmpeg -o af -d "Set audio filters"
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# Subtitle options
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complete -c ffmpeg -s s -d "Set frame size"
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complete -c ffmpeg -o sn -d "Disable subtitle"
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complete -c ffmpeg -o scodec -o "codec:s" -o "c:s"
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__fish_ffmpeg_complete_regex '-(scodec|c(odec)?:s)(:\d+)?' "(__fish_ffmpeg_codec_list subtitle)"
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complete -c ffmpeg -o stag -d "Force subtitle tag/fourcc"
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complete -c ffmpeg -o fix_sub_duration -d "Fix subtitles duration"
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complete -c ffmpeg -o canvas_size -d "Set canvas size"
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complete -c ffmpeg -o spre -d "Set the subtitle options to the indicated preset"
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# Codec-specific options
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complete -c ffmpeg -o pre -o preset -d "Preset name"
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__fish_ffmpeg_complete_regex 'pre(set)?' "(__fish_ffmpeg_presets)"
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complete -c ffmpeg -o tune
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__fish_ffmpeg_complete_regex tune "(__fish_ffmpeg_tunes)"
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complete -c ffmpeg -o crf -o q
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__fish_ffmpeg_complete_regex 'crf|q' "(__fish_ffmpeg_crfs)"
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complete -c ffmpeg -o profile
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__fish_ffmpeg_complete_regex profile "(__fish_ffmpeg_profiles)"
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# Filters
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#
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# fish completions are not designed to take the current argument being completed as an input,
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# and if introspected it is normally used to filter/constrain the completions generated. ffmpeg's
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# command line syntax is extremely nasty and in addition to using stringification for all arguments,
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# relies on special characters to delimit separate subarguments (rather than, e.g., concatenating
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# repeated invocations of the same switch), meaning the typical way of generating fish completions
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# would only allow us to generate the very first subargument in a complex argument payload.
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#
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# We hack around this in a ridiculously ugly fashion by always generating completions that are
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# prepended with a prefix of the current value of the payload in question.
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#
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# Top-level ffmpeg filters are comma separated, but take optional arguments that might themselves
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# take optional subarguments. While = is a key=value delimiter, it is also a prefix for the first
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# argument to a filter, e.g. filter_name=opt1 and filter_name=opt1=opt_value, and in the case that
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# a filter takes more than one argument, filter arguments are delimited with :
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#
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# A complete example:
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#
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# ffmpeg .... -filter:v filter1,filter2=f2_arg1=f2_arg1_val:f2_arg2
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function __fish_ffmpeg_split_filter_graph
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set -l filters (string split , $argv[1])
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printf "%s\n" $filters
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end
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# Given a single filter expression, emits the filter name on the first line and then each key=value
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# pair of arguments to the filter on each subsequent line.
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function __fish_ffmpeg_decompose_filter
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set -l parts (string split -m 1 = "$argv")
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echo $parts[1] # the filter name
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set -l arguments (string split : $parts[2])
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printf "%s\n" $arguments
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end
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function __fish_ffmpeg_concat_filters
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string join -- , $argv
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end
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function __fish_ffmpeg_concat_filter_args
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string join -- : $argv
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end
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function __fish_ffmpeg_complete_filter
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set -l filter_type all
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if string match -rq -- '^-(vf(ilter)?|f(ilter)?:v)' (__fish_ffmpeg_last_arg)
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set filter_type video
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else if string match -rq -- '^-(af(ilter)?|f(ilter)?:a)' (__fish_ffmpeg_last_arg)
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set filter_type audio
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end
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# echo -e "\n **** $filter_type **** \n" > /dev/tty
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set -l filters_arg (commandline -o)[-1]
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if string match -rq -- '^-' $filters_arg
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# No filter name started
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__fish_ffmpeg_filters $filter_type
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return
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end
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set -l filters (__fish_ffmpeg_split_filter_graph $filters_arg)
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# We are completing only the last filter (in case there are multiple)
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set -l filter $filters[-1]
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# Remove it from the list of passed-through filters
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set -e filters[-1]
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# `ffmpeg -h filter=FILTER` exposes information that can be used to dynamically complete not
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# only the name of the filter but also the name of its individual options. We currently only
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# support completing the name of the filter.
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set -l decomposed (__fish_ffmpeg_decompose_filter $filter)
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set -l filter_name $decomposed[1]
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set -l filter_args (__fish_ffmpeg_concat_filter_args $decomposed[2..-1])
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# Emit the mutated filter graph, with permutations of the final filter name offered as
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# completions.
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for known_filter in (__fish_ffmpeg_filters $filter_type)
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set -l modified_filter (string join = $known_filter $filter_args)
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__fish_ffmpeg_concat_filters $filters $modified_filter
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end
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end
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complete -x -c ffmpeg -o filter -o filter:v -o filter:s -o filter:a -o vf -o af \
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-a "(__fish_ffmpeg_complete_filter)"
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