FSPDS

Flipnote Studio Player for Nintendo DS

This ROM allows you to play flipnotes on Nintendo DS (Lite) using your flashcard.

Features

Flipnote player

FSPDS allows DSi flipnote playback providing an experience similar to a common media payer. It supports pause/resume options, auto repeat, direct navigation to the previews/next flipnote and shuffling. It should be able to play any flipnote that runs correctly in the original Flipnote Studio.

Small notes on the filesystem

For faster load times, FSPDS prescans the folders for flipnotes and stores their paths onto the SD card. Therefore, when the user changes the content of their flipnote folders, a directory reindex must be performed. This way, FSPDS cached data will be up to date with the actual files structure. Not reindexing might cause new flipnotes not showing up in the list, or deleted flipnotes still persist in a phantom state in the application, fact denoted by the dead green frog thumbnail.

Bugs/Limitations

• FSPDS doesn't detect/play flipnotes larger than 1MB (this is intentional behavior)
• The flipnote's BGM track should be smaller than 512KB in order to be played correctly. However, the DSi Flipnote Studio only allows for 1 minute of raw audio (8192Hz) to be encoded into a flipnote, which means at most 240KB of sound data. Therefore, FSPDS should not have problems playing original flipnotes. Spin-off flipnotes which contain huge audio data may not play correctly with this application.
• Crashes on the Flipnote Lenny ( ͡° ͜ʖ ͡°) files.
• If your flipnotes have custom names like "my_flip.ppm" they will not be indexed, This will likely be solved in a future version.  For a quick fix, please check this patch. 
• FAT Init failed! This means  the app fails to detect an external filesystem (like a flashcard's SD card or DSi storage). It may happen when you run FSPDS on emulators. To solve this issue, please see this link: https://notimplementedlife.github.io/FSPDSNitro/ 

Tested on

• DeSmuME emulator
• no$gba with DSi NAND & virtual SD card
• Nintendo DS Lite with R4(i) flashcards
• Nintendo DSi

Credits

• Guys from DSiBrew and Flipnote Collective for their awesome documentation on .PPM file format.
• devkitPro for their compiler, ndslib and examples
• The authors behind GodMode9i for the idea of overwriting character fonts
• Drenn1/GameYob repo for helping me figure out how to work with makefiles.
• RinLovesYou for her ADPCM to PCM Decode() method from PPMLib
• tomrow for their suggestion on Alternate flipnote browse locations
• Moonshell2 source code for hints on making the screen saver during playback
• DSC Engine provides the main framework of this application