mirror of
https://github.com/kilyabin/psysonic.git
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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>
79 lines
1.6 KiB
Rust
79 lines
1.6 KiB
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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/// An unsigned 16.16-bit fixed point value.
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#[derive(Copy, Clone, Debug, Default)]
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pub struct FpU16(u32);
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impl FpU16 {
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pub fn new(val: u16) -> Self {
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Self(u32::from(val) << 16)
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}
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pub fn parse_raw(val: u32) -> Self {
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Self(val)
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}
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}
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impl From<FpU16> for f64 {
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fn from(fp: FpU16) -> Self {
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f64::from(fp.0) / f64::from(1u32 << 16)
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}
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}
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/// An unsigned 8.8-bit fixed point value.
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#[derive(Copy, Clone, Debug, Default)]
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pub struct FpU8(u16);
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impl FpU8 {
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pub fn new(val: u8) -> Self {
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Self(u16::from(val) << 8)
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}
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pub fn parse_raw(val: u16) -> Self {
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Self(val)
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}
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}
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impl From<FpU8> for f64 {
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fn from(fp: FpU8) -> Self {
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f64::from(fp.0) / f64::from(1u16 << 8)
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}
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}
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impl From<FpU8> for f32 {
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fn from(fp: FpU8) -> Self {
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f32::from(fp.0) / f32::from(1u16 << 8)
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}
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}
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/// An unsigned 8.8-bit fixed point value.
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#[derive(Copy, Clone, Debug, Default)]
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pub struct FpI8(i16);
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impl FpI8 {
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pub fn new(val: i8) -> Self {
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Self(i16::from(val) * 0x100)
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}
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pub fn parse_raw(val: i16) -> Self {
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Self(val)
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}
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}
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impl From<FpI8> for f64 {
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fn from(fp: FpI8) -> Self {
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f64::from(fp.0) / f64::from(1u16 << 8)
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}
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}
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impl From<FpI8> for f32 {
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fn from(fp: FpI8) -> Self {
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f32::from(fp.0) / f32::from(1u16 << 8)
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}
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}
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