mirror of
https://github.com/zarzet/SpotiFLAC-Mobile.git
synced 2026-09-30 13:19:44 +02:00
Add Hi-Res authenticity check
Introduce a per-file Hi-Res authenticity checker and optional auto re-download for flagged fake Hi-Res downloads. Adds Rust checker modules (fft, evidence, FLAC/WAV decoding, tests) and a mobile API (check_hires_authenticity). Wire platform bindings for Android/iOS and PlatformBridge. Add Dart HiResCheckService, UI HiResCheckCard, settings toggle (redownloadFakeHiRes) and integration in the download pipeline to quarantine and replace suspicious files with LOSSLESS when safe. Adds claxon FLAC dependency.
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Bartolo committed
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@@ -0,0 +1,308 @@
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import 'package:flutter/material.dart';
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import 'package:spotiflac_android/l10n/l10n.dart';
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import 'package:spotiflac_android/services/hires_check_service.dart';
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import 'package:spotiflac_android/widgets/settings_group.dart';
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/// On-demand fake Hi-Res check for one FLAC/WAV file: spectral cutoff for
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/// upsampling, and unused low bits for a 16-bit master padded to 24.
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class HiResCheckCard extends StatefulWidget {
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final String filePath;
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final String? formatHint;
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const HiResCheckCard({super.key, required this.filePath, this.formatHint});
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/// Only FLAC and PCM WAV are decoded by the Go checker.
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static bool isCandidate(String filePath, String? formatHint) {
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final format = formatHint?.toLowerCase().trim() ?? '';
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if (format == 'flac' || format == 'wav') return true;
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final lower = filePath.toLowerCase();
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return lower.endsWith('.flac') || lower.endsWith('.wav');
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}
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@override
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State<HiResCheckCard> createState() => _HiResCheckCardState();
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}
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class _HiResCheckCardState extends State<HiResCheckCard> {
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HiResCheckResult? _result;
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bool _checking = false;
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String? _error;
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int _requestId = 0;
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@override
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void didUpdateWidget(covariant HiResCheckCard oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.filePath != widget.filePath) {
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_requestId++;
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_result = null;
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_error = null;
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_checking = false;
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}
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}
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Future<void> _check() async {
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final requestId = ++_requestId;
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setState(() {
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_checking = true;
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_error = null;
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});
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String? error;
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HiResCheckResult? result;
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try {
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result = await HiResCheckService.check(widget.filePath);
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} on StateError catch (e) {
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error = e.message;
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} catch (e) {
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error = e.toString();
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}
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if (!mounted || requestId != _requestId) return;
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setState(() {
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_checking = false;
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_result = result;
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_error = error;
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});
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}
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@override
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Widget build(BuildContext context) {
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if (!HiResCheckCard.isCandidate(widget.filePath, widget.formatHint)) {
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return const SizedBox.shrink();
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}
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final cs = Theme.of(context).colorScheme;
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final l10n = context.l10n;
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final result = _result;
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return Card(
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elevation: 0,
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color: settingsGroupColor(context),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(20),
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side: BorderSide(color: cs.outlineVariant.withValues(alpha: 0.5)),
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),
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Icon(Icons.verified_outlined, color: cs.primary, size: 20),
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const SizedBox(width: 8),
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Expanded(
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child: Text(
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l10n.hiResCheckTitle,
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style: TextStyle(
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color: cs.onSurface,
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fontWeight: FontWeight.w600,
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fontSize: 14,
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),
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),
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),
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if (_checking)
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const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(strokeWidth: 2.5),
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)
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else if (result != null || _error != null)
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IconButton(
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icon: const Icon(Icons.refresh, size: 20),
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tooltip: l10n.audioAnalysisRescan,
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visualDensity: VisualDensity.compact,
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padding: EdgeInsets.zero,
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constraints: const BoxConstraints(
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minWidth: 48,
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minHeight: 48,
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),
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color: cs.onSurfaceVariant,
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onPressed: _check,
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),
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],
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),
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const SizedBox(height: 8),
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if (_checking)
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_secondaryText(l10n.hiResCheckChecking, cs)
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else if (_error != null)
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Text(
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l10n.hiResCheckFailed(_error!),
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style: TextStyle(color: cs.error, fontSize: 13),
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)
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else if (result == null) ...[
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_secondaryText(l10n.hiResCheckDescription, cs),
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const SizedBox(height: 12),
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FilledButton.tonalIcon(
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onPressed: _check,
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icon: const Icon(Icons.search, size: 18),
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label: Text(l10n.hiResCheckRun),
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),
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] else if (!result.supported)
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_secondaryText(l10n.hiResCheckUnsupported, cs)
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else
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..._buildResult(context, result, cs),
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],
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),
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),
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);
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}
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Widget _secondaryText(String text, ColorScheme cs) {
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return Text(
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text,
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style: TextStyle(color: cs.onSurfaceVariant, fontSize: 13),
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);
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}
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List<Widget> _buildResult(
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BuildContext context,
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HiResCheckResult result,
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ColorScheme cs,
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) {
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final l10n = context.l10n;
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final (IconData icon, Color color, String label) = switch (result.verdict) {
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'fake_hires' when result.isCertain => (
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Icons.error_outline,
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cs.error,
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l10n.hiResCheckVerdictFakeCertain,
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),
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'fake_hires' when result.isSuspect => (
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Icons.help_outline,
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cs.tertiary,
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l10n.hiResCheckVerdictFakeSuspect,
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),
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'fake_hires' => (
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Icons.warning_amber_rounded,
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cs.error,
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l10n.hiResCheckVerdictFake,
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),
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'genuine_hires' => (
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Icons.check_circle_outline,
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cs.primary,
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l10n.hiResCheckVerdictGenuine,
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),
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'standard_definition' => (
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Icons.info_outline,
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cs.onSurfaceVariant,
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l10n.hiResCheckVerdictStandard,
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),
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_ => (
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Icons.help_outline,
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cs.onSurfaceVariant,
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l10n.hiResCheckVerdictInconclusive,
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),
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};
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final effectiveBits = result.effectiveBitDepth > 0
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? result.effectiveBitDepth
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: null;
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final reasons = <String>[
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if (result.upsamplingArtifact == 'sample_hold')
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l10n.hiResCheckReasonSampleHold,
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if (result.upsamplingArtifact == 'linear_interpolation')
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l10n.hiResCheckReasonInterpolation,
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if (result.upsamplingArtifact == 'imaging') l10n.hiResCheckReasonImaging,
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if (result.upsampled)
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l10n.hiResCheckReasonRate(
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_formatKHz(result.declaredSampleRate.toDouble()),
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_formatKHz(result.cutoffFrequencyHz),
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),
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if (result.isFake && result.paddedBitDepth)
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l10n.hiResCheckReasonDepth(
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result.declaredBitDepth,
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result.effectiveBitDepth,
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),
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];
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return [
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Row(
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children: [
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Icon(icon, color: color, size: 18),
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const SizedBox(width: 6),
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Expanded(
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child: Text(
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label,
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style: TextStyle(
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color: color,
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fontWeight: FontWeight.w600,
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fontSize: 13,
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),
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),
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),
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],
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),
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for (final reason in reasons) ...[
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const SizedBox(height: 4),
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_secondaryText('• $reason', cs),
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],
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if (result.ultrasonicNoiseOnly) ...[
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const SizedBox(height: 4),
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_secondaryText(
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'• ${l10n.hiResCheckUltrasonicNoise(_formatKHz(result.musicCutoffHz), _formatKHz(result.usefulSampleRate.toDouble()))}',
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cs,
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),
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],
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if (result.verdict != 'inconclusive') ...[
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const SizedBox(height: 8),
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Wrap(
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spacing: 16,
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runSpacing: 4,
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children: [
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// Past the music only steady noise remains, so where it ends
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// says nothing about the music: show the music's own edge.
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if (result.ultrasonicNoiseOnly)
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_detail(
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l10n.hiResCheckMusicContent,
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'~${_formatKHz(result.musicCutoffHz)}',
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cs,
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)
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else
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_detail(
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l10n.hiResCheckCutoff,
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'~${_formatKHz(result.cutoffFrequencyHz)}',
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cs,
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),
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if (result.declaredBitDepth > 0)
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_detail(
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l10n.hiResCheckBitsInUse,
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'${effectiveBits ?? '?'} / ${result.declaredBitDepth}-bit',
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cs,
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),
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],
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),
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],
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if (result.isSuspect) ...[
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const SizedBox(height: 8),
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Text(
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l10n.hiResCheckDisclaimer,
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style: TextStyle(
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color: cs.onSurfaceVariant,
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fontSize: 11,
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fontStyle: FontStyle.italic,
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),
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),
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],
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];
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}
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Widget _detail(String label, String value, ColorScheme cs) {
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return Text.rich(
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TextSpan(
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children: [
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TextSpan(
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text: '$label: ',
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style: TextStyle(color: cs.onSurfaceVariant, fontSize: 12),
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),
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TextSpan(
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text: value,
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style: TextStyle(
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color: cs.onSurface,
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fontSize: 12,
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fontWeight: FontWeight.w600,
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),
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),
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],
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),
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);
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}
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String _formatKHz(double hz) => '${(hz / 1000).toStringAsFixed(1)} kHz';
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}
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