Mirrors/lofty-rs
2
0
Fork 0
mirror of https://github.com/Serial-ATA/lofty-rs synced 2024-12-04 18:09:11 +00:00
Code Issues Projects Releases Packages Wiki Activity

WV: Fix skipping unused block content

Browse source
This commit is contained in:
Serial 2024-11-20 00:23:48 -05:00 committed by Alex
parent 5e999179f5
commit f38ee26ea9
1 changed files with 20 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
lofty/src/wavpack/properties.rs
View file

@ -318,20 +318,23 @@ fn get_extended_meta_info(
}
if size == 0 {
decode_err!(@BAIL WavPack, "Encountered a zero-sized block");
// Empty blocks may not *always* be valid, but we only care about the validity
// of a few blocks.
continue;
}
if (size as usize) > reader.len() {
err!(SizeMismatch);
}
if id & ID_FLAG_ODD_SIZE > 0 {
size -= 1;
}
if (size as usize) >= reader.len() {
err!(SizeMismatch);
}
match id & 0x3F {
ID_NON_STANDARD_SAMPLE_RATE => {
properties.sample_rate = reader.read_u24::<LittleEndian>()?;
size -= 3;
},
ID_DSD => {
if size <= 1 {
@ -339,6 +342,7 @@ fn get_extended_meta_info(
}
let mut rate_multiplier = u32::from(reader.read_u8()?);
size -= 1;
if rate_multiplier > 30 {
parse_mode_choice!(
@ -350,9 +354,6 @@ fn get_extended_meta_info(
rate_multiplier = 1 << rate_multiplier;
properties.sample_rate = properties.sample_rate.wrapping_mul(rate_multiplier);
// Skip DSD mode
let _ = reader.read_u8()?;
},
ID_MULTICHANNEL => {
if size <= 1 {
@ -366,18 +367,22 @@ fn get_extended_meta_info(
match s {
0 => {
let channel_mask = reader.read_u8()?;
size -= 1;
properties.channel_mask = ChannelMask(u32::from(channel_mask));
},
1 => {
let channel_mask = reader.read_u16::<LittleEndian>()?;
size -= 2;
properties.channel_mask = ChannelMask(u32::from(channel_mask));
},
2 => {
let channel_mask = reader.read_u24::<LittleEndian>()?;
size -= 3;
properties.channel_mask = ChannelMask(channel_mask);
},
3 => {
let channel_mask = reader.read_u32::<LittleEndian>()?;
size -= 4;
properties.channel_mask = ChannelMask(channel_mask);
},
4 => {
@ -385,6 +390,7 @@ fn get_extended_meta_info(
properties.channels += 1;
let channel_mask = reader.read_u24::<LittleEndian>()?;
size -= 4;
properties.channel_mask = ChannelMask(channel_mask);
},
@ -393,18 +399,20 @@ fn get_extended_meta_info(
properties.channels += 1;
let channel_mask = reader.read_u32::<LittleEndian>()?;
size -= 5;
properties.channel_mask = ChannelMask(channel_mask);
},
_ => decode_err!(@BAIL WavPack, "Encountered invalid channel info size"),
}
},
_ => {
let (_, rem) = reader.split_at(size as usize);
*reader = rem;
},
_ => {},
}
// Skip over any remaining block size
let (_, rem) = reader.split_at(size as usize);
*reader = rem;
if id & ID_FLAG_ODD_SIZE > 0 {
let _ = reader.read_u8()?;
}