289 lines
7.9 KiB
Bash
Executable File
289 lines
7.9 KiB
Bash
Executable File
#!/bin/sh
|
||
#
|
||
# Purpose {{{
|
||
# This script will try to control MPV with IPC socket
|
||
# 1. Check for MPV proc with IPC socket option.
|
||
# 2. Extract the newest socket path from command line.
|
||
# 3. Send user command to the last MPV process with a existing socket.
|
||
#
|
||
# 2022-05-22
|
||
# }}}
|
||
# TODO {{{
|
||
# * Add an option to set the socket path.
|
||
# * Add new user command ?
|
||
# }}}
|
||
# Vars {{{
|
||
PROGNAME=$(basename "${0}"); readonly PROGNAME
|
||
PROGDIR=$(readlink -m $(dirname "${0}")); readonly PROGDIR
|
||
readonly ARGS="${*}"
|
||
readonly NBARGS="${#}"
|
||
[ -z "${DEBUG}" ] && DEBUG=1
|
||
## Export DEBUG for sub-script
|
||
export DEBUG
|
||
|
||
## Default values for some vars
|
||
readonly MPV_PROC_REGEXP="mpv.*--input-ipc-server="
|
||
readonly USER_MULTIMEDIA_COMMAND_DEFAULT="toggle"
|
||
MPV_POSSIBLE_SOCKET_PATH=$(pgrep --newest --full --list-full -- "^${MPV_PROC_REGEXP}" | sed -n -e "s/.*${MPV_PROC_REGEXP}\(.*\) .*/\1/p;q")
|
||
readonly MPV_POSSIBLE_SOCKET_PATH
|
||
|
||
## Colors
|
||
readonly PURPLE='\033[1;35m'
|
||
readonly RED='\033[0;31m'
|
||
readonly RESET='\033[0m'
|
||
readonly COLOR_DEBUG="${PURPLE}"
|
||
# }}}
|
||
usage() { # {{{
|
||
|
||
cat <<- HELP
|
||
usage: $PROGNAME [-c|-d|-h]
|
||
|
||
Manage MPV with IPC socket.
|
||
Can only manage the last mpv process started with --input-ipc-server option.
|
||
|
||
EXAMPLES :
|
||
- Pauses playing
|
||
${PROGNAME} --command pause
|
||
|
||
- Send default command (${USER_MULTIMEDIA_COMMAND_DEFAULT}) to MPV
|
||
${PROGNAME}
|
||
|
||
- Try to play next track (if playing a playlist)
|
||
${PROGNAME} --command next
|
||
|
||
OPTIONS :
|
||
-c,--command
|
||
Send a command to running MPV. Available commands :
|
||
* toggle play, pause
|
||
* play
|
||
* pause
|
||
* next
|
||
* prev, previous
|
||
|
||
-d,--debug
|
||
Enable debug messages.
|
||
|
||
-h,--help
|
||
Print this help message.
|
||
HELP
|
||
|
||
}
|
||
# }}}
|
||
debug_message() { # {{{
|
||
|
||
local_debug_message="${1}"
|
||
|
||
## Print message if DEBUG is enable (=0)
|
||
[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_debug_message}"
|
||
|
||
unset local_debug_message
|
||
|
||
return 0
|
||
}
|
||
# }}}
|
||
error_message() { # {{{
|
||
|
||
local_error_message="${1}"
|
||
local_error_code="${2}"
|
||
|
||
## Print message
|
||
printf '%b\n' "ERROR − ${PROGNAME} : ${RED}${local_error_message}${RESET}"
|
||
|
||
exit "${local_error_code:=66}"
|
||
}
|
||
# }}}
|
||
define_vars() { # {{{
|
||
|
||
## Get the socket path of the last MPV process {{{
|
||
MPV_SOCKET_PATH="${MPV_POSSIBLE_SOCKET_PATH}"
|
||
debug_message "define_vars − \
|
||
IPC socket path for the last MPV process : ${RED}${MPV_SOCKET_PATH}${COLOR_DEBUG} ."
|
||
## }}}
|
||
## If USER_MULTIMEDIA_COMMAND wasn't defined (argument) {{{
|
||
if [ -z "${USER_MULTIMEDIA_COMMAND}" ]; then
|
||
## Use default value
|
||
readonly USER_MULTIMEDIA_COMMAND="${USER_MULTIMEDIA_COMMAND_DEFAULT}"
|
||
fi
|
||
## }}}
|
||
## Translate user command to MPV command {{{
|
||
case "${USER_MULTIMEDIA_COMMAND}" in
|
||
toggle ) ## Toggle current play
|
||
debug_message "define_vars − \
|
||
Use ${RED}MPV socket${COLOR_DEBUG} to send ${USER_MULTIMEDIA_COMMAND} command."
|
||
MPV_COMMAND=$(echo '{ "command": ["cycle", "pause"] }' | socat - "${MPV_SOCKET_PATH}")
|
||
;;
|
||
play ) ## Starts playing song (default number 1)
|
||
debug_message "define_vars − \
|
||
Use ${RED}MPV socket${COLOR_DEBUG} to send ${USER_MULTIMEDIA_COMMAND} command."
|
||
MPV_COMMAND=$(echo '{ "command": ["set_property", "pause", false] }' | socat - "${MPV_SOCKET_PATH}")
|
||
;;
|
||
pause ) ## Pauses playing
|
||
debug_message "define_vars − \
|
||
Use ${RED}MPV socket${COLOR_DEBUG} to send ${USER_MULTIMEDIA_COMMAND} command."
|
||
MPV_COMMAND=$(echo '{ "command": ["set_property", "pause", true] }' | socat - "${MPV_SOCKET_PATH}")
|
||
;;
|
||
next ) ## Try to play next track (if available)
|
||
debug_message "define_vars − \
|
||
Use ${RED}MPV socket${COLOR_DEBUG} to send ${USER_MULTIMEDIA_COMMAND} command."
|
||
MPV_COMMAND=$(echo 'playlist-next' | socat - "${MPV_SOCKET_PATH}")
|
||
;;
|
||
prev|previous ) ## Try to play previous track (if available)
|
||
debug_message "define_vars − \
|
||
Use ${RED}MPV socket${COLOR_DEBUG} to send ${USER_MULTIMEDIA_COMMAND} command."
|
||
MPV_COMMAND=$(echo 'playlist-prev' | socat - "${MPV_SOCKET_PATH}")
|
||
;;
|
||
* ) ## unknow option
|
||
printf '%b\n' "${RED}Invalid MPV command: ${USER_MULTIMEDIA_COMMAND}${RESET}"
|
||
printf '%b\n' "---"
|
||
usage
|
||
exit 1
|
||
;;
|
||
esac
|
||
## }}}
|
||
|
||
}
|
||
# }}}
|
||
is_proc_absent() { # {{{
|
||
|
||
local_proc_pattern="${1}"
|
||
|
||
## Proc is absent by default
|
||
return_proc_absent="0"
|
||
|
||
local_count_proc_pattern="$(pgrep -f -- "${local_proc_pattern}" | wc -l)"
|
||
|
||
case "${local_count_proc_pattern}" in
|
||
0 ) ## No procs related to this pattern are running
|
||
return_proc_absent="0"
|
||
;;
|
||
* ) ## At least one proc seems running
|
||
return_proc_absent="1"
|
||
;;
|
||
esac
|
||
|
||
## Simple debug message to valid current variables
|
||
debug_message "is_proc_absent − \
|
||
procs running (with the pattern: ${RED}${local_proc_pattern}${COLOR_DEBUG}) on the current host: ${RED}${local_count_proc_pattern}${COLOR_DEBUG}."
|
||
|
||
return "${return_proc_absent}"
|
||
|
||
}
|
||
# }}}
|
||
is_socket_absent() { # {{{
|
||
|
||
local_socket_absent="${1}"
|
||
|
||
## Socket exists by default
|
||
return_is_socket_absent="1"
|
||
|
||
### Check if the socket exists
|
||
# shellcheck disable=SC2086
|
||
if find ${local_socket_absent} -type s > /dev/null 2>&1; then
|
||
return_is_socket_absent="1"
|
||
debug_message "is_socket_absent − \
|
||
The socket ${RED}${local_socket_absent}${COLOR_DEBUG} exists."
|
||
else
|
||
return_is_socket_absent="0"
|
||
debug_message "is_socket_absent − \
|
||
The socket ${RED}${local_socket_absent}${COLOR_DEBUG} doesn't exist."
|
||
fi
|
||
|
||
return "${return_is_socket_absent}"
|
||
|
||
}
|
||
# }}}
|
||
|
||
main() { # {{{
|
||
|
||
## If MPV is not running {{{
|
||
### AND exit 1
|
||
is_proc_absent "${MPV_PROC_REGEXP}" \
|
||
&& debug_message "No MPV running process with IPS socket." \
|
||
&& exit 1
|
||
## }}}
|
||
|
||
## Define all vars
|
||
define_vars
|
||
|
||
## If MPV's IPC socket is not present {{{
|
||
### AND exit 1
|
||
is_socket_absent "${MPV_SOCKET_PATH}" \
|
||
&& debug_message "Can't access to MPV IPC socket : ${RED}${MPV_SOCKET_PATH}${COLOR_DEBUG}." \
|
||
&& exit 1
|
||
## }}}
|
||
## Send MPV action to running instance {{{
|
||
### And exit
|
||
debug_message "Send ${RED}${USER_MULTIMEDIA_COMMAND}${COLOR_DEBUG} action to last MPV running instance with an IPC socket." \
|
||
"${MPV_COMMAND}" \
|
||
&& exit 0
|
||
## }}}
|
||
|
||
}
|
||
# }}}
|
||
|
||
# Manage arguments # {{{
|
||
# This code can't be in a function due to argument management
|
||
|
||
if [ ! "${NBARGS}" -eq "0" ]; then
|
||
|
||
manage_arg="0"
|
||
|
||
## If the first argument is not an option
|
||
if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
|
||
then
|
||
## Print help message and exit
|
||
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
|
||
printf '%b\n' "---"
|
||
usage
|
||
|
||
exit 1
|
||
fi
|
||
|
||
# Parse all options (start with a "-") one by one
|
||
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
|
||
|
||
case "${1}" in
|
||
-c|--command ) ## User command
|
||
### Move to the next argument
|
||
shift
|
||
### Define var
|
||
USER_MULTIMEDIA_COMMAND="${1}"
|
||
;;
|
||
-d|--debug ) ## debug
|
||
DEBUG=0
|
||
;;
|
||
-h|--help ) ## help
|
||
usage
|
||
## Exit after help informations
|
||
exit 0
|
||
;;
|
||
* ) ## unknow option
|
||
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
|
||
printf '%b\n' "---"
|
||
usage
|
||
exit 1
|
||
;;
|
||
esac
|
||
|
||
debug_message "Arguments management − \
|
||
${RED}${1}${COLOR_DEBUG} option|command managed."
|
||
|
||
## Move to the next argument
|
||
shift
|
||
manage_arg=$((manage_arg+1))
|
||
|
||
done
|
||
|
||
debug_message "Arguments management − \
|
||
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
|
||
else
|
||
debug_message "Arguments management − \
|
||
No arguments/options to manage."
|
||
fi
|
||
|
||
# }}}
|
||
|
||
main
|
||
|
||
exit 255
|