D88ファイル自動解析機能の実装とコンパイルエラーの修正 #23
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- D88Diskクラスに詳細情報解析メソッド（analyzeDetailedInfo）を追加 - IPLコードとOS領域を特定するメソッド（locateSystemAreas）を実装 - ContentViewのanalyzeD88Dataメソッドを強化し、IPL検出とOS領域特定を自動化 - PC88CoreにisD88DataAvailableフラグを追加し、D88データの有効性を管理 - 型変換エラーと強制アンラップの問題を修正 - レンジエラー（Range requires lowerBound <= upperBound）を修正 これにより、D88ファイル読み込み時に自動的にIPLの検索とOS領域の特定が行われ、 PMD88シグネチャが検出された場合は曲データと音色データのアドレスが自動設定されるようになりました。
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Hello @ponzu0147, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
Summary of Changes
This pull request focuses on enhancing the PC-8801 emulator with an automatic D88 file analysis feature and several bug fixes. The core functionality involves adding methods to the D88Disk class for detailed information analysis, IPL code and OS area identification, and signature searching. The ContentView is strengthened to leverage these new D88Disk features, automating IPL detection, OS area identification, and PMD88 signature searching. The PC88Core is extended with a isD88DataAvailable flag to manage D88 data validity and improve UI state management. Additionally, several bug fixes address type conversion errors, unnecessary force unwrapping, and range errors, contributing to a more stable and user-friendly emulation experience.
Highlights
- D88 File Auto-Analysis: Implements automatic analysis of D88 files, enabling the emulator to automatically detect and load IPL, identify OS areas, and search for PMD88 signatures.
- ContentView Enhancements: Enhances the
ContentViewto utilize the new D88 analysis features, automating IPL detection, OS area identification, and PMD88 signature searching, significantly improving the user experience. - PC88Core Extensions: Extends the
PC88Corewith aisD88DataAvailableflag to manage D88 data validity and improves UI state management, preventing operations on invalid data. - Bug Fixes: Addresses several bugs, including type conversion errors, unnecessary force unwrapping, and range errors, enhancing the stability and reliability of the emulator.
- Audio Engine Improvements: The
AudioEngineclass has been refactored to improve the stopping and resetting of the audio engine, including the addition of aforceStopmethod for handling difficult to stop audio. - FM Engine Enhancements: The
FMEngineclass has been enhanced to improve FM sound generation, including the addition of key on state management and improved frequency calculation.
Changelog
Click here to see the changelog
- AudioEngine.swift
- Implements a completely redesigned
stop()method for the audio engine, ensuring proper shutdown and resource release. - Adds
forceStop()method for handling difficult to stop audio, providing a more robust stopping mechanism. - Includes debug methods for the stop button, aiding in debugging and ensuring the stop functionality works as expected.
- Adds
recreateEngine()method to recreate the audio engine
- Implements a completely redesigned
- FMEngine.swift
- Implements key on state management for FM channels, ensuring accurate tracking of channel activity.
- Improves the
generateSamplemethod to accurately generate FM sound samples based on the current register settings. - Adds methods for calculating frequency, generating waveforms, and calculating envelopes, enhancing the FM sound synthesis capabilities.
- PMD88iOS/AudioEngine.swift
- This file was removed from the project
- PMD88iOS/BoardType.swift
- Changes the board type from an enum to a struct of string constants
- PMD88iOS/ContentView.swift
- Implements a new UI structure using SwiftUI, providing a comprehensive interface for controlling the emulator and displaying real-time parameters.
- Adds a document picker for selecting D88 files, automating the loading and analysis of disk data.
- Introduces FMChannelInfoView and SSGChannelInfoView to display detailed information about FM and SSG channels, enhancing the user's ability to monitor and understand the audio output.
- Implements a play/pause/reset control panel with state management, providing a more intuitive and user-friendly control interface.
- PMD88iOS/D88Disk.swift
- This file was removed from the project
- PMD88iOS/Engine/ADPCMEngine.swift
- Adds a new ADPCMEngine class to handle ADPCM sound generation, including methods for loading data, starting/stopping playback, and updating state based on register values.
- PMD88iOS/Engine/AudioEngine.swift
- Refactors the AudioEngine to integrate SSG, FM, Rhythm, and ADPCM sound sources, providing a unified audio management system.
- Implements audio buffer generation with stereo output, improving the audio quality and realism.
- Adds methods for initializing FM channels, updating FM registers, and monitoring FM engine output, enhancing the FM sound synthesis capabilities.
- PMD88iOS/Engine/FMEngine.swift
- This file was created
- PMD88iOS/Engine/RhythmEngine.swift
- Adds a new RhythmEngine class to handle rhythm sound generation, including methods for loading dummy samples, triggering rhythm sounds, and updating state based on register values.
- PMD88iOS/Engine/SSGEngine.swift
- Adds a new SSGEngine class to handle SSG sound generation, including methods for updating noise, calculating envelopes, and generating samples.
- PMD88iOS/FMAlgorithm.swift
- This file was created
- PMD88iOS/FMEnvelope.swift
- This file was created
- PMD88iOS/FMGenerator.swift
- This file was created
- PMD88iOS/FMTypes.swift
- This file was created
- PMD88iOS/PC88.swift
- This file was removed from the project
- PMD88iOS/PC88/D88Disk.swift
- Adds a new D88Disk class for detailed analysis of D88 disk images, including methods for analyzing disk information, locating system areas, and loading IPL code.
- Implements methods for searching for signatures, extracting PMD88 data, and finding/loading files from the disk file system, enhancing the emulator's ability to handle D88 disk images.
- PMD88iOS/PC88/PC88Audio.swift
- This file was created
- PMD88iOS/PC88/PC88BIOS.swift
- This file was created
- PMD88iOS/PC88/PC88Core.swift
- This file was created
- PMD88iOS/PC88/PC88Debug.swift
- This file was created
- PMD88iOS/PC88/PC88FontROM.swift
- This file was created
- PMD88iOS/PC88/PC88PMD.swift
- This file was created
- PMD88iOS/PC88/PC88Types.swift
- This file was created
- PMD88iOS/PC88ScreenView.swift
- This file was created
- PMD88iOS/PMD88iOSApp.swift
- Modifies the app structure to use @StateObject for PC88Core, ensuring the emulator core is properly initialized and managed throughout the app's lifecycle.
- PMD88iOS/Z80.swift
- This file was modified
- PMD88iOS/Z80/Z80ADPCM.swift
- This file was created
- PMD88iOS/Z80/Z80Core.swift
- This file was created
- PMD88iOS/Z80/Z80Debug.swift
- This file was created
- PMD88iOS/Z80/Z80IO.swift
- This file was created
- PMD88iOS/Z80/Z80Instructions.swift
- This file was created
- requirements.md
- Updated the requirements document to reflect the current state of the project.
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From floppy disk to touch screen's grace,
A PC88 finds a new space.
With Swift's code, old tunes revive,
In iOS, retro spirits thrive.
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Code Review
The pull request implements an automatic analysis feature for D88 files and fixes compilation errors, enhancing the emulator's functionality. The changes include adding detailed information analysis to the D88Disk class, improving content view, and extending PC88Core. The code introduces new methods for IPL code and OS area identification, signature searching, and UI state management. Overall, the changes seem well-structured and contribute significantly to the emulator's usability.
Summary of Findings
- Missing Error Handling: There are instances where error handling could be improved, especially in functions dealing with file operations or audio engine management. Adding more robust error handling would make the code more resilient.
- Potential Performance Bottlenecks: Some loops or calculations, especially in audio processing, might become performance bottlenecks. Consider optimizing these sections for better efficiency.
- Inconsistent Use of Logging: The logging verbosity varies across different parts of the code. Standardizing the level of detail in logging would improve maintainability and debugging.
Merge Readiness
The pull request introduces significant new functionality and addresses existing bugs. However, there are a few areas, particularly in error handling and potential performance bottlenecks, that should be addressed before merging. I am unable to directly approve this pull request, and recommend that other reviewers also carefully examine the changes, especially regarding the correctness and efficiency of the new features. Given the presence of medium and high severity issues, I recommend that the pull request not be merged until those are addressed (at a minimum).
| do { | ||
| try AVAudioSession.sharedInstance().setActive(false, options: .notifyOthersOnDeactivation) | ||
| } catch { | ||
| print("⚠️ オーディオセッション停止エラー: \(error)") | ||
| } |
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Consider adding more specific error handling here. Knowing the exact error that occurred during audio session activation can be very helpful for debugging. For example, you could log the localizedDescription of the error.
} catch let error as NSError { // Capture the NSError to access its code
print("⚠️ AudioSession停止エラー: \(error), domain: \(error.domain), code: \(error.code)")
}| // ファイル読み込み処理（バックグラウンドで実行） | ||
| DispatchQueue.global(qos: .userInitiated).async { | ||
| do { |
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Consider adding a more specific error message to the log that indicates which file operation failed (e.g., reading the file, starting security-scoped access).
let data = try Data(contentsOf: url)
pc88.appendLog("D88ファイル読み込み成功: \(url.lastPathComponent) (\(data.count) bytes)")
} catch let fileError { // Capture the specific error
DispatchQueue.main.async {
self.pc88.status = "エラー: ファイル読み込みエラー(\(url.lastPathComponent)): \(fileError.localizedDescription)"
}
D88ファイル自動解析機能の実装とコンパイルエラーの修正
実装した機能
D88ファイル自動解析機能
analyzeDetailedInfo）を追加locateSystemAreas）を実装searchForSignature）を追加ContentViewの強化
analyzeD88Dataメソッドを強化し、D88Diskクラスの新機能を活用PC88Coreの拡張
isD88DataAvailableフラグを追加し、D88データの有効性を管理修正したバグ
ユーザー体験の向上
これらの実装により、ユーザー体験が大幅に向上しました：
D88ファイルを選択するだけで、エミュレータが自動的に：
D88データの有効性に基づいて再生ボタンの状態が自動的に管理され、無効なデータでの操作を防止
詳細なログ出力により、ディスク解析の状況が可視化され、デバッグが容易に