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libobs: Add obs_in_task_thread() function

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Allows determining which thread the caller is currently in, if any
This commit is contained in:
jp9000 2021-12-19 09:53:54 -08:00
parent cf492ca271
commit ab84214356
2 changed files with 14 additions and 4 deletions
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17
libobs/obs.c
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@ -25,6 +25,8 @@
struct obs_core *obs = NULL;
static THREAD_LOCAL bool is_ui_thread = false;
extern void add_default_module_paths(void);
extern char *find_libobs_data_file(const char *file);
@ -2535,14 +2537,14 @@ static void set_audio_thread(void *unused)
UNUSED_PARAMETER(unused);
}
static bool in_task_thread(enum obs_task_type type)
bool obs_in_task_thread(enum obs_task_type type)
{
/* NOTE: OBS_TASK_UI is handled independently */
if (type == OBS_TASK_GRAPHICS)
return is_graphics_thread;
else if (type == OBS_TASK_AUDIO)
return is_audio_thread;
else if (type == OBS_TASK_UI)
return is_ui_thread;
assert(false);
return false;
@ -2559,7 +2561,7 @@ void obs_queue_task(enum obs_task_type type, obs_task_t task, void *param,
"there's no UI task handler!");
}
} else {
if (in_task_thread(type)) {
if (obs_in_task_thread(type)) {
task(param);
} else if (wait) {
@ -2592,7 +2594,14 @@ void obs_queue_task(enum obs_task_type type, obs_task_t task, void *param,
}
}
static void set_ui_thread(void *unused)
{
is_ui_thread = true;
UNUSED_PARAMETER(unused);
}
void obs_set_ui_task_handler(obs_task_handler_t handler)
{
obs->ui_task_handler = handler;
obs_queue_task(OBS_TASK_UI, set_ui_thread, NULL, false);
}

1
libobs/obs.h
View file

@ -801,6 +801,7 @@ enum obs_task_type {
EXPORT void obs_queue_task(enum obs_task_type type, obs_task_t task,
void *param, bool wait);
EXPORT bool obs_in_task_thread(enum obs_task_type type);
typedef void (*obs_task_handler_t)(obs_task_t task, void *param, bool wait);
EXPORT void obs_set_ui_task_handler(obs_task_handler_t handler);