events: Rework event subsystem (add_event, send_event) to be more versatile.

add_event_ex is added that takes an extra user_data pointer. This pointer is
passed to the callback (add_event and add_event_ex have slightly different
callbacks types). All callbacks also get the event id passed. Events added
with add_event_ex must be removed with remove_event_ex because the user_data
pointer must match in addition to the callback pointer.

On the other add_event is simplified to omit the oneshort parameter which
was almost always false (still there with add_event_ex).

As a side effect the ata_idle_notify callbacks are changed as well, they
do not take a data parameter anymore which was always NULL anyway.

This commit also adds some documentation to events.h

Change-Id: I13e29a0f88ef908f175b376d83550f9e0231f772

1 files changed, 3 insertions, 2 deletions

diff --git a/apps/plugins/mpegplayer/mpeg_settings.c b/apps/plugins/mpegplayer/mpeg_settings.c
index bcef4c6..b5c9c6b 100644
--- a/apps/plugins/mpegplayer/mpeg_settings.c
+++ b/apps/plugins/mpegplayer/mpeg_settings.c
@@ -677,8 +677,9 @@ static uint32_t increment_time(uint32_t val, int32_t amount, uint32_t range)
 }
 
 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
-static void get_start_time_lcd_enable_hook(void *param)
+static void get_start_time_lcd_enable_hook(unsigned short id, void *param)
 {
+    (void)id;
     (void)param;
     rb->queue_post(rb->button_queue, LCD_ENABLE_EVENT_0, 0);
 }
@@ -698,7 +699,7 @@ static int get_start_time(uint32_t duration)
     mylcd_update();
 
 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
-    rb->add_event(LCD_EVENT_ACTIVATION, false, get_start_time_lcd_enable_hook);
+    rb->add_event(LCD_EVENT_ACTIVATION, get_start_time_lcd_enable_hook);
 #endif
 
     draw_slider(0, 100, &rc_bound);