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audio: Try to definitely have a default device set up.

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This commit is contained in:
Ryan C. Gordon
2023-07-03 11:51:22 -04:00
parent b60a56d368
commit 1fc01b0300
1 changed files with 16 additions and 3 deletions
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19
src/audio/SDL_audio.c
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@@ -468,6 +468,19 @@ static void CompleteAudioEntryPoints(void)
#undef FILL_STUB
}
static SDL_AudioDeviceID GetFirstAddedAudioDeviceID(const SDL_bool iscapture)
{
// (these are pushed to the front of the linked list as added, so the first device added is last in the list.)
SDL_LockRWLockForReading(current_audio.device_list_lock);
SDL_AudioDevice *last = NULL;
for (SDL_AudioDevice *i = current_audio.output_devices; i != NULL; i = i->next) {
last = i;
}
const SDL_AudioDeviceID retval = last ? last->instance_id : 0;
SDL_UnlockRWLock(current_audio.device_list_lock);
return retval;
}
// !!! FIXME: the video subsystem does SDL_VideoInit, not SDL_InitVideo. Make this match.
int SDL_InitAudio(const char *driver_name)
{
@@ -580,11 +593,11 @@ int SDL_InitAudio(const char *driver_name)
}
// If no default was _ever_ specified, just take the first device we see, if any.
if (!current_audio.default_output_device_id && (current_audio.output_devices != NULL)) {
current_audio.default_output_device_id = current_audio.output_devices->instance_id;
if (!current_audio.default_output_device_id) {
current_audio.default_output_device_id = GetFirstAddedAudioDeviceID(/*iscapture=*/SDL_FALSE);
}
if (!current_audio.default_capture_device_id && (current_audio.capture_devices != NULL)) {
current_audio.default_capture_device_id = current_audio.capture_devices->instance_id;
current_audio.default_output_device_id = GetFirstAddedAudioDeviceID(/*iscapture=*/SDL_TRUE);
}
return 0;