| 1 | #! /bin/bash |
| 2 | |
| 3 | set -e |
| 4 | |
| 5 | ###-------------------------------------------------------------------------- |
| 6 | ### Table of contents representation. |
| 7 | ### |
| 8 | ### We need a simple table of contents representation. A toc file consists |
| 9 | ### of a number of records, one per line; each record is a number of |
| 10 | ### blank-delimited fields. Fields don't contain whitespace, so no quoting |
| 11 | ### is needed. The first field of each record is a type which explains how |
| 12 | ### to decode the rest. |
| 13 | ### |
| 14 | ### `T' START Audio track starts at START frames. |
| 15 | ### |
| 16 | ### `D' START Data track, starts at START frames. |
| 17 | ### |
| 18 | ### `E' END Leadout at END frames. |
| 19 | |
| 20 | ###-------------------------------------------------------------------------- |
| 21 | ### Command line options. |
| 22 | |
| 23 | hidden=0 |
| 24 | data=none |
| 25 | while getopts "d:h:" opt; do |
| 26 | case "$opt" in |
| 27 | h) hidden=$OPTARG ;; |
| 28 | d) data=$OPTARG ;; |
| 29 | *) exit 1 ;; |
| 30 | esac |
| 31 | done |
| 32 | shift $((OPTIND - 1)) |
| 33 | |
| 34 | case "$#" in |
| 35 | 1) ;; |
| 36 | *) echo >&2 "Usage: $0 [-d DATA] [-h HIDDEN] DIR|CD-DEVICE"; exit 1 ;; |
| 37 | esac |
| 38 | source=$1 |
| 39 | |
| 40 | ###-------------------------------------------------------------------------- |
| 41 | ### Work out what to do. |
| 42 | |
| 43 | if [ -d "$source" ]; then |
| 44 | |
| 45 | ## Intuit what's going on from a directory full of FLAC files. |
| 46 | cd "$source" |
| 47 | for i in [0-9][0-9][-.\ ]*.flac; do |
| 48 | metaflac --show-total-samples "$i" |
| 49 | done | { |
| 50 | tn=1 tot=$hidden |
| 51 | while read samples; do |
| 52 | frames=$((samples/588)) |
| 53 | echo "T $tot" |
| 54 | tot=$((tot + frames)) |
| 55 | done |
| 56 | case "$data" in |
| 57 | none) |
| 58 | ;; |
| 59 | *) |
| 60 | tot=$((tot + 11400)) |
| 61 | echo "D $tot" |
| 62 | tot=$((tot + data)) |
| 63 | ;; |
| 64 | esac |
| 65 | echo "E $tot" |
| 66 | } |
| 67 | |
| 68 | elif [ -b "$source" ]; then |
| 69 | |
| 70 | ## Read a table of contents from a CD. |
| 71 | wodim dev="$source" -toc | sed ' |
| 72 | /^track:/ !d |
| 73 | s/^track:\(.*\) lba: *\([0-9][0-9]*\) (.*mode: *\([-0-9][0-9]*\) *$/\1 \3 \2/ |
| 74 | ' | while read track mode offset; do |
| 75 | case "$track,$mode" in |
| 76 | lout,-1) echo "E $offset" ;; |
| 77 | *,0 | *,-1) echo "T $offset" ;; |
| 78 | *,1 | *,2) echo "D $offset" ;; |
| 79 | esac |
| 80 | done |
| 81 | |
| 82 | else |
| 83 | echo >&2 "$0: don't know how to read a toc from $source" |
| 84 | fi |