feat(user/bk-copy-rand-music):Restrict filenames of copied files

[BK-2020-03.git] / unitproc / bkt-check_parsable_audio_ffprobe

#!/usr/bin/env bash

check_parsable_audio_ffprobe() {
    # Desc: Checks if ffprobe returns valid audio codec name for file
    # Usage: check_parsable_audio_ffprobe [path FILE]
    # Version: 0.0.1
    # Input: arg1: file path
    # Output: exit code 0 if returns valid codec name; 1 otherwise
    # Depends: ffprobe, die()
    local file_in ffprobe_out

    if [[ $# -ne 1 ]]; then die "ERROR:Invalid number of args:$#"; fi;
    
    file_in="$1";
    
    # Check if ffprobe detects an audio stream
    if ffprobe -v error -select_streams a -show_entries stream=codec_name -of default=nokey=1:noprint_wrappers=1 "$file_in" 1>/dev/null 2>&1; then
	return_state="true";
    else
	return_state="false";
    fi;

    # Fail if ffprobe returns no result
    ffprobe_out="$(ffprobe -v error -select_streams a -show_entries stream=codec_name -of default=nokey=1:noprint_wrappers=1 "$file_in")";
    if [[ -z $ffprobe_out ]]; then
	return_state="false";
    fi;
    
    # Report exit code
    if [[ $return_state = "true" ]]; then
	return 0;
    else
	return 1;
    fi;
} # Checks if file has valid codec name using ffprobe

# Author: Steven Baltakatei Sandoval
# License: GPLv3+