3 err
() { printf 'error: %b\n' "$*" 1>&2; exit 1; }
6 backup-dvd [options] [commands]
9 -i <input dev> Defaults to ${dev}
10 -o <output dir> Defaults to ${out}
11 -n <volume name> Defaults to volume on disk
14 --backup Back up the disc
15 --modify Tweak runtime settings (needs -n)
16 --mkiso Create an iso (needs -n)
18 If no commands are specified, then all are run.
27 unset doit_
{backup
,modify
,mkiso
}
29 eval set -- `getopt -l backup,modify,mkiso -- hi:n:o: "$@"`
30 while [[ -n $1 ]] ; do
37 --backup) doit_backup
=true
; shift;;
38 --modify) doit_modify
=true
; shift;;
39 --mkiso) doit_mkiso
=true
; shift;;
52 if [[ -z ${doit_backup}${doit_modify}${doit_mkiso} ]] ; then
61 Publisher
= # -publisher
66 if ${doit_backup} ; then
67 if [[ -z ${Volume} ]] ; then
68 info
=$
(iso-info
${dev}) ||
exit 1
70 eval $
(echo "${info}" |
awk -F: '
71 (NF > 1 && $1 !~ /image/) {
75 print $1 "=\"" $2 "\"";
79 if [[ -z ${Volume} ]] ; then
80 echo "Unable to parse Volume out of ISO"
84 for v
in Application Preparer Publisher System Volume Volume_Set
; do
86 done > "${out}/.${Volume}.vars.sh"
88 [[ -z ${Volume} ]] && err
"Need to specify -n with --modify/--mkiso"
89 .
"${out}/.${Volume}.vars.sh" ||
exit 1
94 [[ ${a} == *" "* ||
${#a} == 0 ]] && fmt='"%s"' ||
fmt='%s'
95 printf "${fmt} " "${a}"
110 echo "Backing up: ${Volume}"
111 if ! e dvdbackup
-M "${opts[@]}" ; then
112 e dvdbackup
-F "${opts[@]}" ||
exit 1
117 # Modify some of the runtime settings.
121 while [[ $# -gt 3 ]]; do
131 local file=$1 off
=$2 num
=${3:-1}
132 hexdump -v -n ${num} -s $((${off})) -e "1/1 \"%02x${sep}\"" "${file}"
137 (for b; do printf "\x
${b#0x}"; done) | \
139 bs=1 seek=$((${off})) \
140 conv=notrunc status=none
143 # DVDs have sectors of 2048 bytes (2^11).
144 local file=$1 off=$2 num=${3:-4}
145 echo $(( $(bytes_get "${file}" "${off}" "${num}") << 11 ))
149 # Back up the .IFO files before we edit them.
150 local ifo=$1 magic=$2
151 [[ -e ${ifo} ]] || return 1
153 if [[ $(bytes_get "${ifo}" 0 12) != "0x
${magic}" ]] ; then
154 echo "not a VMG IFO
file: ${ifo}"
157 if [[ ! -e ${ifo}.bak ]] ; then
158 cp -a "${ifo}" "${ifo}.bak
"
165 [[ -e ifodump ]] || return 0
168 ./ifodump -f "${file}.bak
" > "${file}.bak.dmp
"
169 ./ifodump -f "${file}" > "${file}.dmp
"
170 diff -u "${file}.bak.dmp" "${file}.dmp" | sed -e 1d -e 2d > "${file}.
diff"
172 grep '^[+-]' "${file}.
diff" | \
174 -e '^-VMG Category:.*' \
175 -e '^+VMG Category: 00000000 (Region Code=ff)' \
176 -e '^[-+].*Title playback type:' \
177 -e '^-.*Title or time play:1' \
178 -e '^+.*Title or time play:0' \
179 -e '^-Prohibited user operations:' \
180 -e '^+Prohibited user operations: Angle Change, $' \
181 -e '^+Prohibited user operations: None$' \
182 | egrep -v -e '^[-+]([0-9a-f]{2} )+$'
184 rm "${file}".{{,bak.}dmp,diff}
185 if [[ -z ${out} ]] ; then
188 echo "error
in ifo modification
:"
195 # http://dvdnav.mplayerhq.hu/dvdinfo/pgc.html
196 local file=$1 pgci_off=$2 indent=$3
197 local num_pgcs p pgc_off off
199 num_pgcs=$(bytes_get "${file}" ${pgci_off} 2)
200 for (( p = 0; p < num_pgcs; ++p )) ; do
203 $(bytes_get "${file}" $(( pgci_off + 8 + 8 * p + 4 )) 4)
205 off=$(( pgc_off + 8 ))
206 pgc_puo=$(bytes_get "${file}" ${off} 4)
207 printf '%bpgc #%2i @ %#06x: %s: ' "${indent}" ${p} ${vmgm_pgc_off} ${pgc_puo}
208 new_pgc_puo
=$
(( pgc_puo
& (1 << 22) )) # Keep angle field.
209 if [[ ${pgc_puo} -ne ${new_pgc_puo} ]] ; then
210 bytes_set "${file}" ${off} 0 $(printf '%x' $(( new_pgc_puo >> 16 ))) 0 0
219 # http://dvdnav.mplayerhq.hu/dvdinfo/ifo_vts.html#pgciut
220 local file=$1 pgci_ut_off=$2
221 local num_langs l off
223 num_langs=$(bytes_get "${file}" ${pgci_ut_off} 2)
224 for (( l = 0; l < num_langs; ++l )) ; do
227 $(bytes_get "${file}" $(( pgci_ut_off + 8 + 8 * l + 4 )) 4)
229 printf '\tclearing lang #%i @ %#06x\n' ${l} ${off}
230 process_pgci "${file}" ${off} '\t\t'
235 # Back up the .IFO files before we edit them.
237 _check_ifo "${vmgi}" "445644564944454f2d564d47" || return 1
241 # Clear the region code.
242 # http://dvdnav.mplayerhq.hu/dvdinfo/ifo.html
243 # 0x23 - region code restrict byte - set to 0x00 for region free.
244 echo "clearing region code"
245 bytes_set "${vmgi}" 0x23 0x00
247 # Clear all Prohibited User Operations (PUOs) in TT_SRPT (Uop1 & Uop0).
248 # http://dvdnav.mplayerhq.hu/dvdinfo/ifo_vmg.html
249 echo "clearing PUOs in TT_SRPT"
250 tt_srpt_sec=$(dvdsec "${vmgi}" 0xC4)
252 num_titles=$(bytes_get "${vmgi}" ${tt_srpt_sec} 2)
253 for (( t = 0; t < num_titles; ++t )) ; do
254 off=$(( tt_srpt_sec + 8 + (t * 12) ))
255 printf "\ttitle type #%2i @ %#06x: " "${t}" "${off}"
256 title_type=$(bytes_get "${vmgi}" ${off} 1)
257 uop0=$(( title_type & 1 ))
258 uop1=$(( title_type & 2 ))
259 printf "%s (uop1:%i uop0:%i): " ${title_type} ${uop1} ${uop0}
260 new_title_type=$(( title_type & ~3 ))
261 if [[ ${title_type} -ne ${new_title_type} ]] ; then
262 bytes_set "${vmgi}" ${off} $(printf '%x' ${new_title_type})
269 # Clear all the PUOs in the PGCs. But Preserve the angle bit.
270 # Note: Removal of the angle PUO can cause certain standalone players to
271 # display the "angle" icon during playback. Removal of the angle PUO
272 # whilst permitted is therefore not recommended.
273 # http://dvdnav.mplayerhq.hu/dvdinfo/uops.html
274 #fp_pgc_addr=$(bytes_get "${vmgi}" 0x84 4)
275 #num_pgcs=$(bytes_get "${vmgi}" $(( fp_pgc_sec + 1 )) 1)
276 echo "clearing PUOs in PGCs"
277 vmgm_pgci_ut_sec=$(dvdsec "${vmgi}" 0xC8)
278 process_pgci_ut "${vmgi}" ${vmgm_pgci_ut_sec}
282 # Back up the .IFO files before we edit them.
284 _check_ifo "${vtsi}" "445644564944454f2d565453" || return 1
288 echo "clearing PUOs in PGCs"
290 vts_pgci_sec=$(dvdsec "${vtsi}" 0xCC)
291 process_pgci "${vtsi}" ${vts_pgci_sec} '\t'
293 vtsm_pgci_ut_sec=$(dvdsec "${vtsi}" 0xD0)
294 process_pgci_ut "${vtsi}" ${vtsm_pgci_ut_sec}
298 local out_vts_dir="${out}/${Volume}/VIDEO_TS"
301 for vmgi in "${out_vts_dir}"/VIDEO_TS.{IFO,BUP} ; do
302 process_vmgi "${vmgi}"
303 check_changes "${vmgi}" || exit 1
306 for vtsi in "${out_vts_dir}"/VTS_??_?.{IFO,BUP} ; do
307 process_vtsi "${vtsi}"
308 check_changes "${vtsi}" || exit 1
313 # Finally, create a new iso.
316 set -- mkisofs -quiet -dvd-video -no-bak \
317 -A "${Application}" \
319 -publisher "${Publisher}" \
322 -volset "${Volume_Set}" \
323 -o "${Volume}.iso" "${Volume}"
324 sh="${out}/.${Volume}.sh"
327 echo "cd '${out}' || exit 1"
328 echo ". './.${Volume}.vars.sh'"
332 echo 'echo "$@"; exec "$@"'
337 du -h "${out}/${Volume}.iso"
340 ${doit_backup} && backup_dvd
341 ${doit_modify} && modify_dvd
342 ${doit_mkiso} && mkiso_dvd
344 ${doit_backup} && eject