From: Steven Baltakatei Sandoval Date: Wed, 12 Jul 2023 03:38:46 +0000 (+0000) Subject: feat(user/bkmpv2):Add bkshuf wrapper for mpv X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/commitdiff_plain/75e9293975f0308899d964e9b266280c636e101b?ds=inline;hp=--cc feat(user/bkmpv2):Add bkshuf wrapper for mpv - chore(user/bkfeh):Fix comment typo --- 75e9293975f0308899d964e9b266280c636e101b diff --git a/user/bkfeh b/user/bkfeh index 911d51b..fba697c 100755 --- a/user/bkfeh +++ b/user/bkfeh @@ -383,7 +383,7 @@ main() { fi; ## Call find_filelist() in parallel for stdin input if [[ "${#dirs_stdin[@]}" -gt 0 ]]; then - fdepth=1; export fdepth; # 1 ofr dirs from stdin + fdepth=1; export fdepth; # 1 for dirs from stdin paths_images+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_stdin[@]}" )"); # See [1] fi; @@ -422,5 +422,6 @@ export -f yell die must read_stdin read_psarg find_flist; main "$@"; + # Author: Steven Baltakatei Sandoval # License: GPLv3+ diff --git a/user/bkmpv2 b/user/bkmpv2 new file mode 100755 index 0000000..19f605e --- /dev/null +++ b/user/bkmpv2 @@ -0,0 +1,395 @@ +#!/usr/bin/env bash +# Desc: Wrapper for mpv that accepts directory paths via posargs or stdin lines +# Usage: bkmpv2 [DIR] +# Version: 0.0.1 +# Depends: GNU Parallel, GNU Bash v5.1.16, mpv v0.34.1, bc v1.07.1 +# Ref/Attrib: [1] Tange, Ole. GNU Parallel with Bash Array. 2019-03-24. https://unix.stackexchange.com/a/508365/411854 +# Example: find $HOME/Music -type d | bkmpv2 +# Example: bkmpv2 $HOME/Music/ +# Note: Does not follow symlinks + +# Find settings +firegex=".+\(aac\|aif\|aiff\|flac\|m4a\|mp3\|mp4\|ogg\|opus\|wav\)$"; # update according to `find . -type f | grep -Eo "\.([[:alnum:]])+$" | sort -u` +fsize="10k"; # default: minimum "10k" +fdepth_posarg="10"; # find depth for positional arguments +fdepth_stdin="1"; # find depth for stdin +fc_falloff="1000"; # characteristic file count falloff in the output +fc_redbase="10"; # logarithm base to reduce output file count + +export firegex fsize ; # export for parallel + +#===Declare local functions=== +yell() { echo "$0: $*" >&2; } # print script path and all args to stderr +die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status +must() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails +checkapp() { + # Desc: If arg is a command, save result in assoc array 'appRollCall' + # Usage: checkapp arg1 arg2 arg3 ... + # Version: 0.1.1 + # Input: global assoc. array 'appRollCall' + # Output: adds/updates key(value) to global assoc array 'appRollCall' + # Depends: bash 5.0.3 + local returnState + + #===Process Args=== + for arg in "$@"; do + if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command + appRollCall[$arg]="true"; + if ! [ "$returnState" = "false" ]; then returnState="true"; fi; + else + appRollCall[$arg]="false"; returnState="false"; + fi; + done; + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + return 0; + else + return 1; + fi; +} # Check that app exists +checkfile() { + # Desc: If arg is a file path, save result in assoc array 'fileRollCall' + # Usage: checkfile arg1 arg2 arg3 ... + # Version: 0.1.1 + # Input: global assoc. array 'fileRollCall' + # Output: adds/updates key(value) to global assoc array 'fileRollCall'; + # Output: returns 0 if app found, 1 otherwise + # Depends: bash 5.0.3 + local returnState + + #===Process Args=== + for arg in "$@"; do + if [ -f "$arg" ]; then + fileRollCall["$arg"]="true"; + if ! [ "$returnState" = "false" ]; then returnState="true"; fi; + else + fileRollCall["$arg"]="false"; returnState="false"; + fi; + done; + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + return 0; + else + return 1; + fi; +} # Check that file exists +checkdir() { + # Desc: If arg is a dir path, save result in assoc array 'dirRollCall' + # Usage: checkdir arg1 arg2 arg3 ... + # Version 0.1.1 + # Input: global assoc. array 'dirRollCall' + # Output: adds/updates key(value) to global assoc array 'dirRollCall'; + # Output: returns 0 if app found, 1 otherwise + # Depends: Bash 5.0.3 + local returnState + + #===Process Args=== + for arg in "$@"; do + if [ -d "$arg" ]; then + dirRollCall["$arg"]="true"; + if ! [ "$returnState" = "false" ]; then returnState="true"; fi + else + dirRollCall["$arg"]="false"; returnState="false"; + fi + done + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + return 0; + else + return 1; + fi +} # Check that dir exists +displayMissing() { + # Desc: Displays missing apps, files, and dirs + # Usage: displayMissing + # Version 0.1.1 + # Input: associative arrays: appRollCall, fileRollCall, dirRollCall + # Output: stderr: messages indicating missing apps, file, or dirs + # Depends: bash 5, checkAppFileDir() + local missingApps value appMissing missingFiles fileMissing + local missingDirs dirMissing + + #==BEGIN Display errors== + #===BEGIN Display Missing Apps=== + missingApps="Missing apps :"; + #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done + for key in "${!appRollCall[@]}"; do + value="${appRollCall[$key]}"; + if [ "$value" = "false" ]; then + #echo "DEBUG:Missing apps: $key => $value"; + missingApps="$missingApps""$key "; + appMissing="true"; + fi; + done; + if [ "$appMissing" = "true" ]; then # Only indicate if an app is missing. + echo "$missingApps" 1>&2; + fi; + unset value; + #===END Display Missing Apps=== + + #===BEGIN Display Missing Files=== + missingFiles="Missing files:"; + #for key in "${!fileRollCall[@]}"; do echo "DEBUG:$key => ${fileRollCall[$key]}"; done + for key in "${!fileRollCall[@]}"; do + value="${fileRollCall[$key]}"; + if [ "$value" = "false" ]; then + #echo "DEBUG:Missing files: $key => $value"; + missingFiles="$missingFiles""$key "; + fileMissing="true"; + fi; + done; + if [ "$fileMissing" = "true" ]; then # Only indicate if an app is missing. + echo "$missingFiles" 1>&2; + fi; + unset value; + #===END Display Missing Files=== + + #===BEGIN Display Missing Directories=== + missingDirs="Missing dirs:"; + #for key in "${!dirRollCall[@]}"; do echo "DEBUG:$key => ${dirRollCall[$key]}"; done + for key in "${!dirRollCall[@]}"; do + value="${dirRollCall[$key]}"; + if [ "$value" = "false" ]; then + #echo "DEBUG:Missing dirs: $key => $value"; + missingDirs="$missingDirs""$key "; + dirMissing="true"; + fi; + done; + if [ "$dirMissing" = "true" ]; then # Only indicate if an dir is missing. + echo "$missingDirs" 1>&2; + fi; + unset value; + #===END Display Missing Directories=== + + #==END Display errors== +} # Display missing apps, files, dirs +check_depends() { + if ! checkapp mpv parallel bkshuf bc b2sum; then + displayMissing; + die "FATAL:Missing apps."; + fi; + return 1; +}; # check dependencies +checkInt() { + # Desc: Checks if arg is integer + # Usage: checkInt arg + # Input: arg: integer + # Output: - return code 0 (if arg is integer) + # - return code 1 (if arg is not integer) + # Example: if ! checkInt $arg; then echo "not int"; fi; + # Version: 0.0.1 + local returnState + + #===Process Arg=== + if [[ $# -ne 1 ]]; then + die "ERROR:Invalid number of arguments:$#"; + fi; + + RETEST1='^[0-9]+$'; # Regular Expression to test + if [[ ! $1 =~ $RETEST1 ]] ; then + returnState="false"; + else + returnState="true"; + fi; + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + return 0; + else + return 1; + fi; +} # Checks if arg is integer +read_stdin() { + # Desc: Consumes stdin; outputs as stdout lines + # Input: stdin (consumes) + # Output: stdout (newline delimited) + # Example: printf "foo\nbar\n" | read_stdin + # Depends: GNU bash (version 5.1.16) + # Version: 0.0.1 + local input_stdin output; + + # Store stdin + if [[ -p /dev/stdin ]]; then + input_stdin="$(cat -)"; + fi; + + # Store as output array elements + ## Read in stdin + if [[ -n $input_stdin ]]; then + while read -r line; do + output+=("$line"); + done < <(printf "%s\n" "$input_stdin"); + fi; + + # Print to stdout + printf "%s\n" "${output[@]}"; +}; # read stdin to stdout lines +read_psarg() { + # Desc: Reads arguments; outputs as stdout lines + # Input: args + # Output: stdout (newline delimited) + # Example: read_psarg "$@" + # Depends: GNU bash (version 5.1.16) + # Version: 0.0.1 + local input_psarg output; + + # Store arguments + if [[ $# -gt 0 ]]; then + input_psarg="$*"; + fi; + + # Store as output array elements + ## Read in positional arguments + if [[ -n $input_psarg ]]; then + for arg in "$@"; do + output+=("$arg"); + done; + fi; + + # Print to stdout + printf "%s\n" "${output[@]}"; +}; # read positional argument to stdout lines +find_flist() { + # Desc: print file list to stdout via `find` using script parameters + # Input: arg1: path to dir + # var: find_depth + # var: pattern_find_iregex + # var: find_size + if [[ ! -d "$1" ]]; then return 1; fi; + must find "$1" -maxdepth "$fdepth" -type f -iregex "$firegex" -size +"$fsize"; +}; # print file list to stdout from dir with script parameters +main() { + # Input: var: firegex find iregex file name pattern + # var: fsize find minimum file siz + # var: fc_falloff characteristic file count falloff in the output + # var: fc_redbase logarithm base to reduce output file count + + local re_dotfile; + declare -a dirs_stdin dirs_psarg; + declare -a paths_files; + declare list_paths_files; + declare -a cmd_args; + check_depends; + + yell "STATUS:$SECONDS:Started."; + #Populate dirs_stdin and dirs_psarg arrays + ## Read stdin as lines + re_dotfile="^\."; # first char is a dot + while read -r line; do + line="$(readlink -e "$line")"; + # Check if dir + if [[ ! -d "$line" ]]; then + echo "ERROR:Not a dir:$line" 1>&2; + continue; + fi; + dir_name="$(basename "$line")"; + # Exclude dotdirs + if [[ "$dir_name" =~ $re_dotfile ]]; then + echo "ERROR:Is a dotdir:$line" 1>&2; + continue + fi; + dirs_stdin+=("$line"); + done < <(read_stdin); + yell "STATUS:$SECONDS:Read stdin."; + ## Read positional arguments as lines + re_dotfile="^\."; # first char is a dot + while read -r line; do + line="$(readlink -e "$line")"; + # Check if dir + if [[ ! -d "$line" ]]; then + echo "ERROR:Not a dir:$line" 1>&2; + continue; + fi; + dir_name="$(basename "$line")"; + # Exclude dotdirs + if [[ "$dir_name" =~ $re_dotfile ]]; then + echo "ERROR:Is a dotdir:$line" 1>&2; + continue + fi; + dirs_psarg+=("$line"); + done < <(read_psarg "$@"); + yell "STATUS:$SECONDS:Read posargs."; + + # Catch all arrays empty + if [[ "${#dirs_stdin[@]}" -le 0 ]] && [[ "${#dirs_psarg[@]}" -le 0 ]]; then + die "FATAL:No valid directories provided."; + fi; + + # Generate file list + ## Call find_filelist() in parallel for positional argument input + if [[ "${#dirs_psarg[@]}" -gt 0 ]]; then + fdepth="$fdepth_posarg"; export fdepth; # for dirs from positional arguments + paths_files+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_psarg[@]}" )"); # See [1] + fi; + ## Call find_filelist() in parallel for stdin input + if [[ "${#dirs_stdin[@]}" -gt 0 ]]; then + fdepth="$fdepth_stdin"; export fdepth; # 1 for dirs from stdin + paths_files+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_stdin[@]}" )"); # See [1] + fi; + + # Convert paths_files array into file list + for i in "${!paths_files[@]}"; do + list_paths_files="$(printf "%s\n%s" "${paths_files[$i]}" "$list_paths_files")"; + done; + # Get stats + fc="$(wc -l < <(echo -n "$list_paths_files"))"; + echo "STATUS:$SECONDS:file count:fc:$fc" + yell "STATUS:$SECONDS:Generated file list."; + + # Sort, remove duplicate paths + list_paths_files="$(echo "$list_paths_files" | sort -u | tr -s '\n')"; + yell "STATUS:$SECONDS:Sorted and deduplicated list."; + + # Remove paths with dotfiles + list_paths_files="$(echo "$list_paths_files" | grep -viE "/\." )"; + yell "STATUS:$SECONDS:Removed dotfiles."; + + # Write playlist + list_paths_files_tmp="/dev/shm/$(date +%Y%m%dT%H%M%S.%N%z)"..mpv_paths.txt; + ## Reduce output file count if greater than falloff + if [[ $fc -gt $fc_falloff ]]; then + bc_exp="$fc_falloff * (1 + l( $fc / $fc_falloff )/l($fc_redbase))"; + fc_out="$( echo "$bc_exp" | bc -l )"; + else + fc_out="$fc"; + fi; + ## Reduce output file count by fixed fraction (bkshuf optimization) + fc_out="$(echo "$fc_out * 0.75" | bc -l)"; + ## Select subset via bkshuf + ### Specify bkshuf-specific environment variables + export BKSHUF_PARAM_LINC=1000000; # for these numbers of lines of input.. + export BKSHUF_PARAM_GSIZE=25; # target this group size + ### Round file count down + fc_out="$(printf "%.0f" "$fc_out")"; # round float down to int + ### Get neighbor-preserving shuffled subset (size $fc_out) + yell "STATUS:$SECONDS:Selecting $fc_out files via bkshuf..."; + must \ + echo -n "$list_paths_files" | \ + bkshuf "$fc_out" > "$list_paths_files_tmp"; + yell "STATUS:$SECONDS:Wrote playlist."; + + # Print stats + yell "STATUS:$SECONDS:Built file list in $SECONDS seconds."; + + # Run mpv with filelist + ## Form command + cmd_args+=("mpv"); + cmd_args+=("--audio-display=no"); # disable video for audio files + cmd_args+=("--vid=no"); # donʼt show video track + cmd_args+=("--image-display-duration=0"); # don't show album art + cmd_args+=("--af=scaletempo=stride=15:overlap=1:search=15"); # improve scrubbing + cmd_args+=("--playlist=$list_paths_files_tmp"); # read playlist + declare -p cmd_args; # debug + ## Execute command + must "${cmd_args[@]}"; + must rm "$list_paths_files_tmp"; +}; +export -f yell die must read_stdin read_psarg find_flist; + +main "$@"; + +# Author: Steven Baltakatei Sandoval +# License: GPLv3+