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libobs: Add services API, reduce repeated code

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Add API for streaming services.  The services API simplifies the
creation of custom service features and user interface.

Custom streaming services later on will be able to do things such as:

 - Be able to use service-specific APIs via modules, allowing a more
   direct means of communicating with the service and requesting or
   setting service-specific information

 - Get URL/stream key via other means of authentication such as OAuth,
   or be able to build custom URLs for services that require that sort
   of thing.

 - Query information (such as viewer count, chat, follower
   notifications, and other information)

 - Set channel information (such as current game, current channel title,
   activating commercials)

Also, I reduce some repeated code that was used for all libobs objects.
This includes the name of the object, the private data, settings, as
well as the signal and procedure handlers.

I also switched to using linked lists for the global object lists,
rather than using an array of pointers (you could say it was..
pointless.)  ..Anyway, the linked list info is also stored in the shared
context data structure.
This commit is contained in:
jp9000
2014-04-19 20:38:53 -07:00
parent 8225a0697a
commit 4a6d19f206
15 changed files with 666 additions and 288 deletions
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31
libobs/obs-video.c
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@@ -22,20 +22,28 @@
static uint64_t tick_sources(uint64_t cur_time, uint64_t last_time)
{
size_t i;
uint64_t delta_time;
float seconds;
struct obs_core_data *data = &obs->data;
struct obs_source *source;
uint64_t delta_time;
float seconds;
if (!last_time)
last_time = cur_time - video_getframetime(obs->video.video);
delta_time = cur_time - last_time;
seconds = (float)((double)delta_time / 1000000000.0);
for (i = 0; i < obs->data.sources.num; i++)
obs_source_video_tick(obs->data.sources.array[i], seconds);
pthread_mutex_lock(&data->sources_mutex);
last_time = cur_time;
return last_time;
source = data->first_source;
while (source) {
if (source->refs)
obs_source_video_tick(source, seconds);
source = (struct obs_source*)source->context.next;
}
pthread_mutex_unlock(&data->sources_mutex);
return cur_time;
}
/* in obs-display.c */
@@ -43,6 +51,8 @@ extern void render_display(struct obs_display *display);
static inline void render_displays(void)
{
struct obs_display *display;
if (!obs->data.valid)
return;
@@ -51,8 +61,11 @@ static inline void render_displays(void)
/* render extra displays/swaps */
pthread_mutex_lock(&obs->data.displays_mutex);
for (size_t i = 0; i < obs->data.displays.num; i++)
render_display(obs->data.displays.array[i]);
display = obs->data.first_display;
while (display) {
render_display(display);
display = display->next;
}
pthread_mutex_unlock(&obs->data.displays_mutex);