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MP4: Rename skip_unneeded to skip_atom

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Serial 2024-09-14 16:36:19 -04:00 committed by Alex
parent 9463c48058
commit ef532557a7
5 changed files with 34 additions and 26 deletions
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8
lofty/src/mp4/ilst/read.rs
View file

@ -7,7 +7,7 @@ use crate::id3::v1::constants::GENRES;
use crate::macros::{err, try_vec};
use crate::mp4::atom_info::{AtomInfo, ATOM_HEADER_LEN};
use crate::mp4::ilst::atom::AtomDataStorage;
use crate::mp4::read::{skip_unneeded, AtomReader};
use crate::mp4::read::{skip_atom, AtomReader};
use crate::picture::{MimeType, Picture, PictureType};
use crate::util::text::{utf16_decode_bytes, utf8_decode};
@ -37,14 +37,14 @@ where
if let AtomIdent::Fourcc(ref fourcc) = atom.ident {
match fourcc {
b"free" | b"skip" => {
skip_unneeded(&mut ilst_reader, atom.extended, atom.len)?;
skip_atom(&mut ilst_reader, atom.extended, atom.len)?;
continue;
},
b"covr" => {
if parse_options.read_cover_art {
handle_covr(&mut ilst_reader, parsing_mode, &mut tag, &atom)?;
} else {
skip_unneeded(&mut ilst_reader, atom.extended, atom.len)?;
skip_atom(&mut ilst_reader, atom.extended, atom.len)?;
}
continue;
@ -248,7 +248,7 @@ where
);
pos += next_atom.len;
skip_unneeded(reader, next_atom.extended, next_atom.len)?;
skip_atom(reader, next_atom.extended, next_atom.len)?;
continue;
}

14
lofty/src/mp4/moov.rs
View file

@ -1,7 +1,7 @@
use super::atom_info::{AtomIdent, AtomInfo};
use super::ilst::read::parse_ilst;
use super::ilst::Ilst;
use super::read::{meta_is_full, nested_atom, skip_unneeded, AtomReader};
use super::read::{meta_is_full, nested_atom, skip_atom, AtomReader};
use crate::config::ParseOptions;
use crate::error::Result;
use crate::macros::decode_err;
@ -28,7 +28,7 @@ impl Moov {
break;
}
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
}
moov.ok_or_else(|| decode_err!(Mp4, "No \"moov\" atom found"))
@ -49,7 +49,7 @@ impl Moov {
if let Some(mdia) =
nested_atom(reader, atom.len, b"mdia", parse_options.parsing_mode)?
{
skip_unneeded(reader, mdia.extended, mdia.len)?;
skip_atom(reader, mdia.extended, mdia.len)?;
traks.push(mdia);
}
},
@ -69,13 +69,13 @@ impl Moov {
ilst = Some(existing_ilst);
}
},
_ => skip_unneeded(reader, atom.extended, atom.len)?,
_ => skip_atom(reader, atom.extended, atom.len)?,
}
continue;
}
skip_unneeded(reader, atom.extended, atom.len)?
skip_atom(reader, atom.extended, atom.len)?
}
Ok(Self { traks, ilst })
@ -106,7 +106,7 @@ where
}
read += atom.len;
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
}
if !found_meta {
@ -138,7 +138,7 @@ where
}
read += atom.len;
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
}
if found_ilst {

20
lofty/src/mp4/properties.rs
View file

@ -1,5 +1,5 @@
use super::atom_info::{AtomIdent, AtomInfo};
use super::read::{nested_atom, skip_unneeded, AtomReader};
use super::read::{nested_atom, skip_atom, AtomReader};
use crate::config::ParsingMode;
use crate::error::{LoftyError, Result};
use crate::macros::{decode_err, err, try_vec};
@ -241,13 +241,13 @@ where
if let AtomIdent::Fourcc(fourcc) = atom.ident {
match &fourcc {
b"mdhd" => {
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
mdhd = Some(atom)
},
b"hdlr" => {
if atom.len < 20 {
log::warn!("Incomplete 'hdlr' atom, skipping");
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
continue;
}
@ -261,18 +261,18 @@ where
audio_track = true
}
skip_unneeded(reader, atom.extended, atom.len - 12)?;
skip_atom(reader, atom.extended, atom.len - 12)?;
},
b"minf" => minf = Some(atom),
_ => {
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
},
}
continue;
}
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
}
}
@ -391,7 +391,7 @@ where
},
b"stts" => stts = Some(read_stts(reader)?),
_ => {
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
},
}
@ -436,7 +436,7 @@ where
// Special case to detect encrypted files
b"drms" => {
properties.drm_protected = true;
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
continue;
},
_ => {
@ -444,7 +444,7 @@ where
"Found unsupported sample entry: {:?}",
fourcc.escape_ascii().to_string()
);
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
continue;
},
}
@ -843,7 +843,7 @@ where
return Ok(atom.len - 8);
}
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
}
decode_err!(@BAIL Mp4, "Failed to find \"mdat\" atom");

14
lofty/src/mp4/read.rs
View file

@ -217,7 +217,15 @@ where
})
}
pub(super) fn skip_unneeded<R>(reader: &mut R, extended: bool, len: u64) -> Result<()>
/// Seeks the reader to the end of the atom
///
/// This should be used immediately after [`AtomInfo::read`] to skip an unwanted atom.
///
/// NOTES:
///
/// * This makes the assumption that the reader is at the end of the atom's header.
/// * This makes the assumption that the `len` is the *full atom length*, not just that of the content.
pub(super) fn skip_atom<R>(reader: &mut R, extended: bool, len: u64) -> Result<()>
where
R: Read + Seek,
{
@ -261,7 +269,7 @@ where
break;
},
_ => {
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
len = len.saturating_sub(atom.len);
},
}
@ -290,7 +298,7 @@ where
break;
};
skip_unneeded(reader, atom.extended, atom.len)?;
skip_atom(reader, atom.extended, atom.len)?;
len = len.saturating_sub(atom.len);
if let AtomIdent::Fourcc(ref fourcc) = atom.ident {

4
lofty/src/mp4/write.rs
View file

@ -3,7 +3,7 @@ use crate::error::{LoftyError, Result};
use crate::io::{FileLike, Length, Truncate};
use crate::macros::err;
use crate::mp4::atom_info::{AtomIdent, AtomInfo, IDENTIFIER_LEN};
use crate::mp4::read::{meta_is_full, skip_unneeded};
use crate::mp4::read::{meta_is_full, skip_atom};
use std::cell::{RefCell, RefMut};
use std::io::{Cursor, Read, Seek, SeekFrom, Write};
@ -53,7 +53,7 @@ impl ContextualAtom {
*reader_len = reader_len.saturating_sub(info.len);
// We don't care about the atom's contents
skip_unneeded(reader, info.extended, info.len)?;
skip_atom(reader, info.extended, info.len)?;
return Ok(Some(ContextualAtom {
info,
children: Vec::new(),