search

libretro / dosbox-libretro

Port of DOSBox (upstream) to the libretro API.
GNU General Public License v2.0
61 stars 40 forks source link

SDL_Sound for compressed imgdisks disabled? #123

Open ghost opened 5 years ago

ghost commented 5 years ago

I'm trying to run a game that has a compressed bin/cue with an ogg track. Both this and the SVN version give me an error. I wonder if SDL_Sound is not enabled and, if so, would it be possible?

Thank you

randombyt commented 5 years ago

I am also facing problems in mounting cd images with compressed audio. The error message is "MSCDEX: Invalid file or unable to open". The images in question do work in stand-alone versions of dosbox (modified).

A brief search of dosbox resources brings out following two leads: 1- https://www.dosbox.com/wiki/Cuesheet (last part discusses compressed audio) 2- https://www.dosbox.com/wiki/Building_DOSBox_with_MinGW (under the heading: Adding support for compressed audio on diskimages - Optional)

Please add support for compressed audio on disk images in dosbox. I requested the same on dosbox-svn repo, sorry for repetition but I am not sure if these cores will merge or not.

niclashoyer commented 4 years ago

I am also facing this issue. I try to start Ignition which needs at least an empty audio disc mounted. But using IMGMOUNT fails, even with an empty dummy cue file.

niclashoyer commented 4 years ago

After digging into the code, there seems to be no easy way to integrate SDL_sound into the libretro port, because there is no real SDL integration, just a fake wrapper to provide minimal compatibility.

ghost commented 4 years ago

That is unfortunate, I guess it was never implemented

niclashoyer commented 4 years ago

Currently looking into this other port dosbox-svn, which uses SDL by default (the fake implementation is optional, used by some architectures). It is just using SDL and SDL_net by default, but it seems more likely to include SDL_sound there.

niclashoyer commented 4 years ago

I propose to close this here, because it seems unlikely, and continue discussion on the feature here: https://github.com/libretro/dosbox-svn/issues/38

ghost commented 4 years ago

Agree, it looks like there is also a new svn version core dosbox-svn-ce, but I could not find the repo on the libretro github.

2m commented 4 years ago

I have also encountered this problem. Many DOS games from GoG come with compressed audio tracks. So I had to reverse the compression to workaround this.

First, I used cdemu to mount the ins (same as cue) files to an emulated CD drive. I had to move the ogg files from the subdirectory to the same directory as ins and gog (same as bin) files.

Once the image was mounted, I used the cdrdao command from the DOSBox wiki to read the contents of the virtual CD drive back to an image.

cdrdao read-cd --datafile image.bin --driver generic-mmc:0x20000 --device /dev/cdrom --read-raw image.toc

This image was successfully mounted by both dosbox-libretro and dosbox-svn cores and music was available in games.