ISO Loader 0.8.x Beta + preview of DreamShell v4.0 RC 5

[fafadou]

(25.10.2023 14:40)SWAT писал(а):  

(25.10.2023 10:42)fafadou писал(а):  @Swat : Could you tell us about the improvements you made for this version ?
I follow the discord, I saw everyone very enthusiasm, but I must confess, I didn't understand everything, I'm sorry.

You've been following discord of the DS and KOS. What improvements are you talking about exactly?
About DS I write here. About my improvements for KOS not.
Sometimes I transfer some things born in the ISO loader to KOS with some additional improvements exactly for KOS.
For example I'm improved KOS sound streams with highly optimized for SH4 the PCM splitting algorithm that I wrote on assembler for ISO loader.
Dreamcast AICA SPU can't simply play stereo PCM, so separate channels are needed as mono to play them back separately with different panning.

Actually my lack of knowledge is too huge, I don't know which software you are using for making loaders, the software for making dreamshell and isoloaders... and how compilers are done...
I'm happy you found some men that can help you there more than we are doing here. Even if I feel, it's you who helped them you are a truly master !

(25.10.2023 14:40)SWAT писал(а):  BTW, this PCM splitting algorithm economy some CPU time for the SD soft SPI hard work, so this is more noticeable on SD with RAW CDDA.
Especially with the additional ~5% improvement for the SPI itself. It's very close to playable now. The SD users will appreciate this

I still keep the 0.6.x beta, hope this one will replace it definitively

(25.10.2023 14:40)SWAT писал(а):  Also I have some idea to improve PCM loading a bit more if the file is defragmented... Perhaps this will give something. Or not, I should check it.
Lots of ideas but not enough time in the day.

Thanks for explain you talked about "size of PCM 32k to 16k" If I understood well, I misunderstanding with the size of loader. anyway, The loaders of the last release is smaller than the 0.8.29 set and should be more efficient Well done.

For me you're right, reading defragmented data is a good thing, but focus on how reaching the low level with cdda that you mentioned will be a huge improvement, if it's possible...