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feat: Custom Music - #545
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Adds a Custom Music page (sidebar, under Patches) that lists every piece of music Retro Rewind can play and lets players replace any of it by dropping in an audio file. - Catalog: original course, arena, menu and jingle streams (names checked against revo_kart.brsar), plus Retro Rewind tracks and arenas read from Pulsar's Config*.pul (CUPS, BMG names, creator file names), including checkpoint music parts and tracks that borrow an original course's music. - Decoding: managed MP3 (NLayer), Ogg Vorbis (NVorbis), FLAC, WAV/RF64, AIFF and BRSTM; M4A/AAC, Opus, WebM, WMA through an installed FFmpeg (never downloaded). Tags and cover art from ID3v2, Vorbis comments, FLAC pictures, MP4 atoms and FFmpeg; covers tint the row. - Conversion: 32 kHz DSP-ADPCM BRSTM with block-aligned loops. Loudness is matched (BS.1770) to the original being replaced, measured as the game plays it (first track in races, all tracks for Pulsar menu music) from Retro Rewind's files or the player's game disc image. The original's 0x3F volume byte is carried over and raised before a -1 dBFS look-ahead limiter kicks in. Louder/Quieter per row. - Loops: loop points from the file (smpl, LOOPSTART tags, BRSTM); otherwise a repeat is found in the music (band-spectrum self-similarity, refined to the sample by cross-correlation); otherwise the ending crossfades into the start. - Final lap: faster (+6% speed and pitch, like Pulsar), faster with the same pitch (WSOLA), or unchanged. - Page: search, sorts (cup order, A-Z, changed first, by type), preview player for originals, music packs and converted songs (PlaySound on Windows, afplay on macOS, paplay/pw-play/aplay/ffplay/play/mpv on Linux), one song for every console's version of a course, music pack import from .zip or folders matched by file name, packs installed on the Patches page shown per row, reset all, pending changes until Save. - Install: songs are written into a "Custom Music" patch with the highest priority, so the existing Patches pipeline copies them into RetroRewind6/ Patches; conflicts with higher-priority patches are reported. Documentation: WheelWizard/Documentation/CustomMusic.md. Tests: WheelWizard.Test/Features/CustomMusic. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M4Wv3rHmcDNTKXzs6Qk9pL
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Actionable comments posted: 7
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @WheelWizard/Features/CustomMusic/Audio/AudioFileDecoder.cs:
- Around line 59-60: Update AudioFileDecoder.DecodeAsync to accept and propagate
the target slot’s PlaysAllTracks setting through its overloads, then use it when
decoding BRSTM data via BrstmReader so race music uses the first track while
menu music retains every track.
Review comments at
@WheelWizard/Features/CustomMusic/Audio/Formats/CompressedReaders.cs:
- Around line 10-16: Update `LooksLikeMp3` to skip the ID3v2 tag and any padding
before checking for an MPEG audio frame, and return true only when the frame
sync is present and the layer bits are not `00`. Keep ADTS AAC classified as
non-MP3 so `AudioFileDecoder.DecodeAsync` can route it to FFmpeg.
- Around line 45-50: Remove the redundant gapless trimming in Mp3Reader because
NLayer 3.0.0 already applies the LAME delay and padding. Convert each decoded
channel in planar directly to an array, preserving all samples and leaving
unrelated readers unchanged.
Review comments at
@WheelWizard/Features/CustomMusic/Playback/MusicPreviewService.cs:
- Around line 34-38: Reduce the MusicPreviewService cache limit, defined by
CachedClips, to 1–2 clips so the singleton retains fewer large decoded buffers;
leave unrelated WAV and memory-copy behavior unchanged.
Review comments at
@WheelWizard/Features/CustomMusic/ViewModels/CustomMusicViewModel.cs:
- Line 465: Update the directory enumeration in ExpandDropAsync to recurse while
skipping inaccessible folders, and convert enumeration IO or access errors into
an OperationError instead of letting them escape. Preserve the existing
supported-audio filtering and song collection behavior.
- Around line 522-531: In the SaveAsync flow, snapshot each item’s Current entry
before awaiting service.SaveAsync, build the entries to save from that snapshot,
and assign each item’s Saved value from its snapshotted entry afterward.
Preserve changes made while the save is running as unsaved; only clear an item’s
Error if its Current still matches the saved snapshot.
Review comments at @WheelWizard/Resources/Languages/en.yml:
- Line 843: Update the volume_offset translation so it interpolates %{amount}
without adding a second dB unit; MusicSlotItem.Details passes a value already
formatted by FormatDb.
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📒 Files selected for processing: 52
WheelWizard.Test/Features/CustomMusic/CustomMusicAudioTests.csWheelWizard.Test/Features/CustomMusic/CustomMusicCatalogTests.csWheelWizard.Test/Features/CustomMusic/CustomMusicInstallerTests.csWheelWizard.Test/Features/CustomMusic/CustomMusicLibraryTests.csWheelWizard.Test/Features/CustomMusic/CustomMusicPlaybackTests.csWheelWizard.Test/Features/CustomMusic/CustomMusicReferenceTests.csWheelWizard.Test/Features/CustomMusic/PulsarConfigBuilder.csWheelWizard/Documentation/CustomMusic.mdWheelWizard/Features/CustomMusic/Audio/AudioBuffer.csWheelWizard/Features/CustomMusic/Audio/AudioFileDecoder.csWheelWizard/Features/CustomMusic/Audio/Codecs/DspAdpcm.csWheelWizard/Features/CustomMusic/Audio/Dsp/AudioOps.csWheelWizard/Features/CustomMusic/Audio/Dsp/LoopFinder.csWheelWizard/Features/CustomMusic/Audio/Dsp/LoudnessMeter.csWheelWizard/Features/CustomMusic/Audio/Dsp/PeakLimiter.csWheelWizard/Features/CustomMusic/Audio/Dsp/Resampler.csWheelWizard/Features/CustomMusic/Audio/Dsp/TimeStretcher.csWheelWizard/Features/CustomMusic/Audio/Formats/Brstm.csWheelWizard/Features/CustomMusic/Audio/Formats/CompressedReaders.csWheelWizard/Features/CustomMusic/Audio/Formats/FfmpegReader.csWheelWizard/Features/CustomMusic/Audio/Formats/FlacReader.csWheelWizard/Features/CustomMusic/Audio/Formats/PcmContainerReaders.csWheelWizard/Features/CustomMusic/Audio/MusicConverter.csWheelWizard/Features/CustomMusic/Audio/Tags/Id3v2Reader.csWheelWizard/Features/CustomMusic/Audio/Tags/Mp4TagReader.csWheelWizard/Features/CustomMusic/Audio/Tags/VorbisComments.csWheelWizard/Features/CustomMusic/Catalog/GameMusicCatalog.csWheelWizard/Features/CustomMusic/Catalog/MusicCatalogService.csWheelWizard/Features/CustomMusic/Catalog/MusicSlot.csWheelWizard/Features/CustomMusic/Catalog/PulsarConfigReader.csWheelWizard/Features/CustomMusic/Catalog/TrackNames.csWheelWizard/Features/CustomMusic/CustomMusicExtensions.csWheelWizard/Features/CustomMusic/CustomMusicService.csWheelWizard/Features/CustomMusic/Library/CustomMusicInstaller.csWheelWizard/Features/CustomMusic/Library/CustomMusicLibrary.csWheelWizard/Features/CustomMusic/Library/GameDiscMusicReader.csWheelWizard/Features/CustomMusic/Library/MusicReferenceService.csWheelWizard/Features/CustomMusic/PathText.csWheelWizard/Features/CustomMusic/Playback/AudioOutput.csWheelWizard/Features/CustomMusic/Playback/MusicPreviewPlayer.csWheelWizard/Features/CustomMusic/Playback/MusicPreviewService.csWheelWizard/Features/CustomMusic/Playback/PreviewClip.csWheelWizard/Features/CustomMusic/ViewModels/BulkObservableCollection.csWheelWizard/Features/CustomMusic/ViewModels/CustomMusicViewModel.csWheelWizard/Features/CustomMusic/ViewModels/MusicSlotItem.csWheelWizard/Features/CustomMusic/Views/CustomMusicPage.axamlWheelWizard/Features/CustomMusic/Views/CustomMusicPage.axaml.csWheelWizard/Resources/Languages/en.ymlWheelWizard/SetupExtensions.csWheelWizard/Views/Shell/Layout.axamlWheelWizard/Views/Styles/Resources/Icons.axamlWheelWizard/WheelWizard.csproj
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- Dropped BRSTMs are decoded the way the target row plays them: the first track for races, all tracks for Retro Rewind menu music (also for pack previews). - MP3 detection looks at the first frame after an ID3v2 tag, so ID3-tagged AAC files go to FFmpeg instead of NLayer. - Drop the duplicate gapless trimming; NLayer 3 already trims the LAME and iTunSMPB encoder delay and padding. - Keep at most two decoded preview clips in memory. - Folder drops skip inaccessible subfolders and report I/O errors instead of throwing. - Saving snapshots the rows first, so songs changed while saving stay pending, and unused files are only deleted once nothing is pending. - Remove the duplicated "dB" from the volume adjustment tooltip. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M4Wv3rHmcDNTKXzs6Qk9pL
Adds a Custom Music page (sidebar, under Patches) that lists every piece of music Retro Rewind can play and lets players replace any of it by dropping in an audio file.
Documentation: WheelWizard/Documentation/CustomMusic.md.
Tests: WheelWizard.Test/Features/CustomMusic.
Purpose of this PR:
Custom music is one of the most common ways players personalise Retro Rewind. Today they have to:
.brstmfile belongs to which track (Retro Rewind tracks use creator file names from Pulsar's config),This PR adds a Custom Music page to the sidebar, under Patches. It lists every piece of music Retro Rewind can play. Drop any audio file on a row and it is converted, loudness-matched to the music it replaces and looped. Nothing touches the game until Save, which writes the songs through the existing Patches pipeline.
How to Test:
.zip(BRSTMs named liken_Circuit32_n.brstm) or a folder onto the page. The files are matched to their tracks by name.Unit tests:
dotnet test(new tests inWheelWizard.Test/Features/CustomMusic).What Has Been Changed:
All feature code lives in
WheelWizard/Features/CustomMusic. The design notes, including how Mario Kart Wii and Pulsar load music, are inWheelWizard/Documentation/CustomMusic.md.revo_kart.brsar.Binaries/Config*.pul: CUPS section, embedded BMG names and creator file names. This follows Pulsar'sstrm/<name>_n/_N/_final/_Flookup._n2,_n3, …), tracks that borrow an original course's music, and Retro Rewind's own menu music.PlaySoundon Windows,afplayon macOS, and the first available ofpaplay/pw-play/aplay/ffplay/play/mpvon Linux.ModsLaunchServicecopies them intoRetroRewind6/Patcheslike any other patch.Layout.axaml).SetupExtensions.cs).Icons.axaml).en.yml).WheelWizard.csproj).Related Issue Link:
N/A (new feature)
Discussion Points:
CustomMusic/, so it survives Retro Rewind updates.BRSARPatches.cpp), so replacements can be any length.en.ymlhas the new strings; other languages fall back to English.Checklist before merging
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