mirror of https://github.com/mpv-player/mpv
166 lines
4.6 KiB
Bash
Executable File
166 lines
4.6 KiB
Bash
Executable File
#!/bin/sh
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# file identification script
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#
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# manual usage:
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# mplayer2_identify.sh foo.mkv
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#
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# sh/dash/ksh/bash usage:
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# . mplayer2_identify.sh FOO_ foo.mkv
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# will fill properties into variables like FOO_length
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#
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# zsh usage:
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# mplayer2_identify() { emulate -L sh; . mplayer2_identify.sh "$@"; }
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# mplayer2_identify FOO_ foo.mkv
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# will fill properties into variables like FOO_length
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#
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# When multiple files were specified, their info will be put into FOO_* for the
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# first file, FOO_1_* for the second file, FOO_2_* for the third file, etc.
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case "$0" in
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mplayer2_identify.sh|*/mplayer2_identify.sh)
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# we are NOT being sourced
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case "$1" in
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'')
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;;
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*)
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set -- '' "$@"
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;;
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esac
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;;
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esac
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if [ $# -lt 2 ]; then
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echo >&2 "Usage 1 (for humans only): $0 filename.mkv"
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echo >&2 "will print all property values."
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echo >&2 "Note that this output really shouldn't be parsed, as the"
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echo >&2 "format is subject to change."
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echo >&2
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echo >&2 "Usage 2 (for use by scripts): see top of this file"
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echo >&2
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echo >&2 "NOTE: for mkv with ordered chapters, this may"
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echo >&2 "not always identify the specified file, but the"
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echo >&2 "file providing the first chapter. Specify"
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echo >&2 "--no-ordered-chapters to prevent this."
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exit 1
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fi
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__midentify__LF="
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"
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__midentify__nextprefix=$1
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shift
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if [ -n "$__midentify__nextprefix" ]; then
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# in case of error, we always want this unset
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eval unset $__midentify__nextprefix'path'
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fi
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__midentify__allprops="
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filename
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path
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stream-start
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stream-end
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stream-length
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demuxer
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program
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length
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chapters
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editions
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titles
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audio
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audio-bitrate
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audio-codec
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audio-format
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channels
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samplerate
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video
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angle
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video-bitrate
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video-codec
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video-format
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aspect
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fps
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width
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height
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sub
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"
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# TODO add metadata support once mplayer can do it
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__midentify__propstr="X-MIDENTIFY-START:\\n"
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for __midentify__key in $__midentify__allprops; do
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__midentify__propstr=$__midentify__propstr"X-MIDENTIFY: $__midentify__key \${=$__midentify__key}\\n"
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eval unset $__midentify__nextprefix$__midentify__key
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done
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__midentify__output=`mplayer --playing-msg="$__midentify__propstr" --vo=null --ao=null --frames=0 "$@"`
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__midentify__fileindex=0
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__midentify__prefix=
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while :; do
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case "$__midentify__output" in
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'')
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break
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;;
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*$__midentify__LF*)
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__midentify__line=${__midentify__output%%$__midentify__LF*}
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__midentify__output=${__midentify__output#*$__midentify__LF}
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;;
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*)
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__midentify__line=$__midentify__output
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__midentify__output=
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;;
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esac
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case "$__midentify__line" in
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X-MIDENTIFY-START:)
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if [ -n "$__midentify__nextprefix" ]; then
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__midentify__prefix=$__midentify__nextprefix
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if [ $__midentify__fileindex -gt 0 ]; then
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__midentify__nextprefix=${__midentify__prefix%$__midentify__fileindex\_}
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fi
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__midentify__fileindex=$(($__midentify__fileindex+1))
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__midentify__nextprefix=$__midentify__nextprefix$__midentify__fileindex\_
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for __midentify__key in $__midentify__allprops; do
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eval unset $__midentify__nextprefix$__midentify__key
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done
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else
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if [ $__midentify__fileindex -gt 0 ]; then
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echo
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fi
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__midentify__fileindex=$(($__midentify__fileindex+1))
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fi
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;;
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X-MIDENTIFY:\ *)
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__midentify__key=${__midentify__line#X-MIDENTIFY:\ }
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__midentify__value=${__midentify__key#* }
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__midentify__key=${__midentify__key%% *}
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if [ -n "$__midentify__nextprefix" ]; then
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if [ -z "$__midentify__prefix" ]; then
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echo >&2 "Got X-MIDENTIFY: without X-MIDENTIFY-START:"
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elif [ -n "$__midentify__value" ]; then
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eval $__midentify__prefix$__midentify__key=\$__midentify__value
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fi
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else
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if [ -n "$__midentify__value" ]; then
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echo "$__midentify__key=$__midentify__value"
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fi
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fi
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;;
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esac
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done
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unset __midentify__fileindex
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unset __midentify__allprops
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unset __midentify__key
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unset __midentify__LF
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unset __midentify__line
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unset __midentify__output
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unset __midentify__nextprefix
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unset __midentify__prefix
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unset __midentify__propstr
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unset __midentify__value
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