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Psychotoxical
a4c400cc69
M4A files store the iTunSMPB value behind a 16-byte binary 'data' atom header. The previous parser took bytes directly after the ASCII key, landing in the binary header and producing a corrupted parts array (total_valid=348 instead of ~13M samples), which caused take_duration to exhaust the source in ~8ms — silent no-playback. Fix: search for the " 00000000 " sentinel within 128 bytes of the key to locate the actual value string, falling back to the old offset for ID3v2/MP3 files where no binary header exists. Also patches symphonia-format-isomp4 (local crate under patches/) to: - Tolerate SL descriptor predefined=0x01 (older iTunes M4A) - Convert descriptor.unwrap() panic to a proper decode error - Gracefully skip malformed trak atoms (e.g. MJPEG cover-art streams) instead of failing the entire probe Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
32 lines
864 B
Rust
32 lines
864 B
Rust
// Symphonia
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// Copyright (c) 2019-2022 The Project Symphonia Developers.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at https://mozilla.org/MPL/2.0/.
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use std::fmt;
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/// Four character codes for typical Ftyps (reference: http://ftyps.com/).
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#[derive(PartialEq, Eq, Clone, Copy)]
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#[repr(transparent)]
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pub struct FourCc {
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val: [u8; 4],
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}
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impl FourCc {
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/// Construct a new FourCC code from the given byte array.
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pub fn new(val: [u8; 4]) -> Self {
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Self { val }
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}
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}
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impl fmt::Debug for FourCc {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match std::str::from_utf8(&self.val) {
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Ok(name) => f.write_str(name),
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_ => write!(f, "{:x?}", self.val),
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}
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}
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}
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