MightyPork
/
srtune
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

poor automove impl

Browse Source
automove
Ondřej Hruška 6 years ago
parent ecd1232713
commit 5285b61e9f
Signed by: MightyPork
GPG Key ID: 2C5FD5035250423D
1 changed files with 208 additions and 56 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 262
      src/main.rs

262
src/main.rs
Unescape View File

@ -21,6 +21,18 @@ fn main() {
let argv =
clap::App::new("srtune")
.version(env!("CARGO_PKG_VERSION"))
.about("Modify a .srt file to match a video. Input and output can be a file or stream, \
so you pipe multiple invocations to create more complex operations. However, a single \
invocation should suffice in most cases.\n\
Times can be specified in any format: \
seconds (400, 14.52), hours:minutes:seconds (14:00, 15:51.12, 1:30:00). Decimal point \
can be period or comma; Times copied directly from the .srt file will also work.\n\
When a command allows both time and index as a value, index must be prefixed with '@'.\
The tool should be used iteratively, adjusting the invocation until the generated \
subtitle file meets expectations. As such, times and indices accepted by its parameters \
are, by default, the ones seen in the output file. Prefix a time or index with '^' \
to use the original value from the input instead (i.e. original index 14 is '^@14')
")
.arg(clap::Arg::with_name("input")
.value_name("INFILE")
.help("Input file, leave out for stdin"),
@ -31,44 +43,43 @@ fn main() {
.value_name("OUTFILE")
.help("Output file, defaults to stdout"),
)
.arg(clap::Arg::with_name("fromtime")
.arg(clap::Arg::with_name("from")
.short("f")
.long("from-time")
.value_name("TIME")
.help("Time of the first affected entry, defaults to 0. Use seconds, M:S or \
H:M:S, decimals are supported. Uses the original times before any shifts or \
scaling."),
)
.arg(clap::Arg::with_name("fromindex")
.short("F")
.long("from-index")
.value_name("INDEX")
.help("Time of the first affected entry, defaults to 0. Use seconds, M:S or \
H:M:S, decimals are supported. Uses the original times before any shifts or \
scaling."),
.help("Time of the first affected entry, or its index. Defaults to 0/^@0."),
)
.arg(clap::Arg::with_name("move")
.short("m")
.long("move")
.value_name("TIME")
.help("Move subtitles in time. Use seconds, M:S or H:M:S, decimals and minus \
are supported."),
are supported. Starts at the point specified by '--from'"),
)
.arg(clap::Arg::with_name("automove")
.short("M")
.long("automove")
.value_name("SUBTIME=VIDEOTIME")
.multiple(true)
.help("Move subtitles following a given time or index to match video times. \
This automatically sets '--from' if not given explicitly."),
)
.arg(clap::Arg::with_name("scale")
.short("s")
.long("scale")
.value_name("RATIO")
.help("Scale subtitle times and durations to compensate for bitrate \
differences. 1 means identity, 1.1 makes all times 10% longer. If a start \
time was given, the scaling is relative to this point, otherwise to the first \
subtitle in the file. Has no effect if '--autoscale' is used."),
differences. 1 means identity, 1.1 makes all times 10% longer. Scaling is \
relative to the first emitted subtitle with positive time (after shifting). \
Has no effect if '--autoscale' is used."),
)
.arg(clap::Arg::with_name("autoscale")
.short("S")
.long("autoscale")
.value_name("SUBTIME=VIDEOTIME")
.help("Calculate scaling based on a perceived difference. The scaling is \
related to the first subtitle, so ensure it is aligned properly with '--move'."),
related to the first emitted subtitle, so ensure it is aligned properly \
with '--move'."),
)
.arg(clap::Arg::with_name("durscale")
.short("d")
@ -117,18 +128,27 @@ fn main() {
}
builder.init();
let from_time = match argv.value_of("fromtime") {
Some(s) => {
SubDuration::try_from(s).expect("Bad --from-time format").as_instant()
let from = match argv.value_of("from") {
Some(mut s) => {
if s.starts_with('^') {
s = &s[1..];
if s.starts_with('@') {
let index = &s[1..].parse().expect("Bad --from format");
FromTag::ByIndexOrig(*index)
} else {
// this is always the orig time
FromTag::ByTime(SubDuration::try_from(s).expect("Bad --from format").as_instant())
}
} else {
if s.starts_with('@') {
let index = &s[1..].parse().expect("Bad --from format");
FromTag::ByIndex(*index)
} else{
FromTag::ByTime(SubDuration::try_from(s).expect("Bad --from format").as_instant())
}
None => SubInstant(0f32)
};
let from_index = match argv.value_of("fromindex") {
Some(s) => {
s.parse().expect("Bad --from-index format")
}
None => 0u32
}
None => FromTag::ByIndex(0)
};
let shift = match argv.value_of("move") {
@ -159,6 +179,9 @@ fn main() {
panic!("Bad --autoscale format, should be SUBTIME=VIDEOTIME")
}
let (first, second) = (halves[0], halves[1]);
if first.starts_with('^') {
panic!("'--autoscale' always uses original times");
}
let subtime = SubDuration::try_from(first).expect("Bad --autoscale format").as_instant();
let vidtime = SubDuration::try_from(second).expect("Bad --autoscale format").as_instant();
@ -167,6 +190,40 @@ fn main() {
None => None
};
let mut automove = Vec::<AutoMoveTag>::new();
match argv.values_of("automove") {
Some(ss) => {
for s in ss {
let halves: Vec<&str> = s.split("=").collect();
if halves.len() != 2 {
panic!("Bad --automove format, should be SUBTIME=VIDEOTIME")
}
let (mut first, second) = (halves[0], halves[1]);
let vidtime = SubDuration::try_from(second).expect("Bad --automove format").as_instant();
if first.starts_with('^') {
first = &first[1..];
if s.starts_with('@') {
let index = &first[1..].parse().expect("Bad --automove format");
automove.push(AutoMoveTag::ByIndexOrig(*index, vidtime));
} else {
let subtime = SubDuration::try_from(first).expect("Bad --automove format").as_instant();
automove.push(AutoMoveTag::ByTimeOrig(subtime, vidtime));
}
} else {
if s.starts_with('@') {
let index = &first[1..].parse().expect("Bad --automove format");
automove.push(AutoMoveTag::ByIndex(*index, vidtime));
} else{
let subtime = SubDuration::try_from(first).expect("Bad --automove format").as_instant();
automove.push(AutoMoveTag::ByTime(subtime, vidtime));
}
}
}
}
None => (/* no automoves */)
}
let inf = argv.value_of("input");
let outf = argv.value_of("output");
let stdin = io::stdin();
@ -205,8 +262,8 @@ fn main() {
durscale,
scale,
shift,
from_index,
from_time,
from,
automove,
});
}
@ -217,8 +274,30 @@ struct TransformOpts {
durscale: f32,
scale: f32,
shift: SubDuration,
from_index: u32,
from_time: SubInstant,
automove: Vec<AutoMoveTag>,
from: FromTag,
}
#[derive(Debug)]
enum AutoMoveTag {
ByTime(SubInstant, SubInstant),
ByTimeOrig(SubInstant, SubInstant),
ByIndex(u32, SubInstant),
ByIndexOrig(u32, SubInstant),
ByIndexRelative(u32, SubDuration),
}
#[derive(Debug)]
enum FromTag {
ByTime(SubInstant),
ByIndex(u32),
ByIndexOrig(u32)
}
#[derive(Debug,Default,Clone,Copy)]
struct IterState {
start_time : Option<SubInstant>,
renumber_i : u32,
}
fn transform_subtitles<'a>(lines : &mut Box<dyn Iterator<Item=Result<String, io::Error>> + 'a>,
@ -226,9 +305,7 @@ fn transform_subtitles<'a>(lines : &mut Box<dyn Iterator<Item=Result<String, io:
mut opts : TransformOpts) {
debug!("Opts: {:#?}", opts);
let mut start_time = SubInstant(0f32);
let mut first_found = false;
let mut renumber_i: u32 = 0;
let mut istate = IterState::default();
let mut linebuf = vec![];
while let Some(Ok(x)) = lines.next() {
@ -242,19 +319,21 @@ fn transform_subtitles<'a>(lines : &mut Box<dyn Iterator<Item=Result<String, io:
continue;
}
let istate_backup = istate;
// 236
// 00:18:01,755 --> 00:18:03,774
// （掃除機の音）
// う～ん…。
match u32::from_str(x) {
Ok(num) => {
Ok(num_orig) => {
// println!("Entry {}", num);
let datesrow = lines.next().unwrap().unwrap();
if datesrow.contains(" --> ") {
let mut halves = datesrow.split(" --> ");
let (first, second) = (halves.next().unwrap(), halves.next().unwrap());
let start = SubInstant::try_from(first).unwrap();
let end = SubInstant::try_from(second).unwrap();
let sub_start = SubInstant::try_from(first).unwrap();
let sub_end = SubInstant::try_from(second).unwrap();
linebuf.clear();
while let Some(Ok(x)) = lines.next() {
@ -264,32 +343,45 @@ fn transform_subtitles<'a>(lines : &mut Box<dyn Iterator<Item=Result<String, io:
linebuf.push(x);
}
let num_new = if opts.renumber {
istate.renumber_i += 1;
istate.renumber_i
} else {
num_orig
};
// advance numbering only for the really emitted entries
let mut subtitle = Subtitle {
num,
start,
dur: SubDuration(end.0 - start.0),
num : num_new,
start: sub_start,
dur: sub_end - sub_start,
text: linebuf.join("\n"),
};
if start >= opts.from_time && num >= opts.from_index {
if !first_found {
debug!("Scaling anchored at {} (#{}), editing starts", start, num);
if match opts.from {
FromTag::ByTime(ins) => ins <= sub_start,
FromTag::ByIndex(idx) => idx <= num_new,
FromTag::ByIndexOrig(idx) => idx <= num_orig,
} {
if istate.start_time.is_none() {
debug!("Scaling anchored at {} (#{}), editing starts", sub_start, num_orig);
debug!("Shifting by: {}", opts.shift);
start_time = start;
first_found = true;
istate.start_time = Some(sub_start);
if let Some((mut subt, mut vidt)) = opts.autoscale {
debug!("Autoscale: VT {} -> ST {}", vidt, subt);
subt -= start_time;
vidt -= start_time + opts.shift;
subt -= sub_start;
vidt -= sub_start + opts.shift;
if subt.0 <= 0f32 {
panic!("Error in autoscale, start time is negative or zero.");
}
if vidt.0 <= 0f32 {
panic!("Error in autoscale, end time is negative or zero.");
}
debug!(" relative to #{}, after \"move\": VT {} -> ST {}", num, vidt, subt);
debug!(" relative to #{}, after \"move\": VT {} -> ST {}", num_orig, vidt, subt);
opts.scale = vidt.0 / subt.0;
debug!("Resolved scale as {}", opts.scale);
}
@ -299,24 +391,76 @@ fn transform_subtitles<'a>(lines : &mut Box<dyn Iterator<Item=Result<String, io:
}
if opts.scale != 1f32 {
subtitle.start = subtitle.start.scale(start_time, opts.scale);
subtitle.start = subtitle.start.scale(istate.start_time.unwrap(), opts.scale);
}
subtitle.dur *= opts.durscale;
subtitle.start += opts.shift;
for amove in opts.automove.iter_mut() {
match amove {
AutoMoveTag::ByIndex(idx, ref vidt) => {
if num_new >= *idx {
debug!("Move by new index starts, reached {}", idx);
let vidt = *vidt;
let dif = vidt - subtitle.start;
subtitle.start = vidt;
std::mem::replace(amove, AutoMoveTag::ByIndexRelative(num_new, dif));
} else if *vidt < subtitle.start && *idx > num_new {
// istate = istate_backup;
warn!("Skip overlapped #{} (by index)", num_orig);
continue;
}
}
AutoMoveTag::ByIndexOrig(idx, ref vidt) => {
if num_orig >= *idx {
debug!("Move by orig index starts, reached {}", idx);
let vidt = *vidt;
let dif = vidt - subtitle.start;
subtitle.start = vidt;
std::mem::replace(amove, AutoMoveTag::ByIndexRelative(num_new, dif));
} else if *vidt < sub_start && *idx > num_orig {
// istate = istate_backup;
warn!("Skip overlapped #{} (by orig index)", num_orig);
continue;
}
}
AutoMoveTag::ByTime(ref subt, ref vidt) => {
if subtitle.start >= *vidt {
// TODO verify
subtitle.start += *vidt - *subt;
} else if *vidt < subtitle.start && *subt > subtitle.start {
// istate = istate_backup;
warn!("Skip overlapped #{} (by time)", num_orig);
continue;
}
}
AutoMoveTag::ByTimeOrig(ref subt, ref vidt) => {
if sub_start >= *subt {
// TODO verify
subtitle.start += *vidt - *subt;
} else if *vidt < subtitle.start && *subt > sub_start {
// istate = istate_backup;
warn!("Skip overlapped #{} (by orig time)", num_orig);
continue;
}
},
// this is used internally
AutoMoveTag::ByIndexRelative(ref idx, ref dif) => {
if num_new >= *idx {
subtitle.start += *dif;
}
},
}
}
}
if subtitle.start.0 < 0f32 {
warn!("Discarding negative time entry #{} @ {:.3}s", subtitle.num, subtitle.start.0);
istate = istate_backup;
continue;
}
// advance numbering only for the really emitted entries
if opts.renumber {
renumber_i += 1;
subtitle.num = renumber_i;
}
outfile.write(subtitle.to_string().as_bytes()).expect("failed to write");
}
}
@ -373,6 +517,14 @@ impl Sub<SubDuration> for SubInstant {
}
}
impl Sub<SubInstant> for SubInstant {
type Output = SubDuration;
fn sub(self, rhs: SubInstant) -> Self::Output {
SubDuration(self.0 - rhs.0)
}
}
impl Mul<f32> for SubDuration {
type Output = SubDuration;

Write Preview
Loading…
Cancel
Save