Home Page Forums MAME Non-Windows MAME Support SDL_GetDefaultAudioInfo compile fails on Ubu22.04

I just did a git pull of master and the compile failed with:



../../../../../src/osd/modules/sound/sdl_sound.cpp:110:13: error: ‘SDL_GetDefaultAudioInfo’ was not declared in this scope; did you mean ‘SDL_GetDefaultCursor’?
110 | if(!SDL_GetDefaultAudioInfo(&def_name, &def_spec, 0)) {
| ^~~~~~~~~~~~~~~~~~~~~~~
| SDL_GetDefaultCursor
make[2]: *** [osd_sdl.make:1387: ../../../../linux_gcc/obj/x64/Release/osd_sdl/src/osd/modules/sound/sdl_sound.o] Error 1


I'm still on Ubuntu 22.04.05 which has 2.0.20 libsdl2

from packages.ubuntu.com search:

jammy (22.04LTS) (libs): Simple DirectMedia Layer
2.0.20+dfsg-2build1: amd64 arm64 armhf i386 ppc64el riscv64 s390x


I see this pull at https://github.com/mamedev/mame/pull/13632

/*
char *def_name;
SDL_AudioSpec def_spec;

if(!SDL_GetDefaultAudioInfo(&def_name, &def_spec, 0)) {
uint32_t idx;
for(idx = 0; idx != m_devices.size() && m_devices[idx].m_name != def_name; idx++);
if(idx == m_devices.size())
m_devices.emplace_back(def_name, def_spec.freq, def_spec.channels, true);
m_default_sink = idx+1;
SDL_free(def_name);
} else
*/


I commented this out and it compiles and runs fine, however I have to go into the menus to set the audio mixer to "built in analog audio stereo" to get sound.

I get this message on the Nobara OS. (Fedora OS clone)

While parsing /home/mitchell/.mame/mame.ini:
Out-of-range float value for audio_latency: "2" (must be between 0.000000 and 0.500000, inclusive); reverting to 0.0

The sound does works. Current MAME beta.

No error on the 0.277 released.

Yes, the meaning of audio_latency changed, which is a really terrible idea.

There’s a draft PR for fixing support for older SDL versions: https://github.com/mamedev/mame/pull/13632

Maybe you want to clean up and test it a bit more? I’ve been pretty busy with the Windows side of things.

I cribbed the part relevant to getting it building with older versions of SDL in d2bfb8c3f4f. I haven’t tested this extensively.

Thanks Vas, it builds fine now.

On my system, I get two output choices, Built-in audio analog stereo and simultaneous output to built-in analog stereo.

Before I wasn't getting sound with the "simultaneous output to built-in analog stereo", but launching pavucontrol lets me set the volume up and now I can get sound output from both of these outputs.

The audio_latency error is gone now. Nobara OS. (Fedora OS clone.)