Extended default_event_handler() that calls a callback function prior to actually handling the event.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5263 a1c6a512-1295-4272-9138-f99709370657

4 files changed, 21 insertions, 8 deletions

diff --git a/apps/misc.c b/apps/misc.c
index 5be6264..f632ecc 100644
--- a/apps/misc.c
+++ b/apps/misc.c
@@ -230,20 +230,30 @@ bool clean_shutdown(void)
     return false;
 }
 
-int default_event_handler(int event)
+int default_event_handler_ex(int event, void (*callback)(void *), void *parameter)
 {
     switch(event)
     {
         case SYS_USB_CONNECTED:
+            if (callback != NULL)
+                callback(parameter);
 #ifdef HAVE_MMC
             if (!mmc_detect() || (mmc_remove_request() == SYS_MMC_EXTRACTED))
 #endif
                 usb_screen();
             return SYS_USB_CONNECTED;
         case SYS_POWEROFF:
+            if (callback != NULL)
+                callback(parameter);
             if (!clean_shutdown())
                 return SYS_POWEROFF;
             break;
     }
     return 0;
 }
+
+int default_event_handler(int event)
+{
+    return default_event_handler_ex(event, NULL, NULL);
+}
+
diff --git a/apps/misc.h b/apps/misc.h
index 9588886..e312248 100644
--- a/apps/misc.h
+++ b/apps/misc.h
@@ -40,6 +40,7 @@ void screen_dump(void);
 
 bool settings_parseline(char* line, char** name, char** value);
 bool clean_shutdown(void);
+int default_event_handler_ex(int event, void (*callback)(void *), void *parameter);
 int default_event_handler(int event);
 
 #endif
diff --git a/apps/plugin.c b/apps/plugin.c
index af67702..bf71aa1 100644
--- a/apps/plugin.c
+++ b/apps/plugin.c
@@ -262,6 +262,7 @@ static const struct plugin_api rockbox_api = {
 #ifndef SIMULATOR
     system_memory_guard,
 #endif
+    default_event_handler_ex,
 };
 
 int plugin_load(const char* plugin, void* parameter)
diff --git a/apps/plugin.h b/apps/plugin.h
index 52a060d..96c4f6f 100644
--- a/apps/plugin.h
+++ b/apps/plugin.h
@@ -60,7 +60,7 @@
 #endif
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 27
+#define PLUGIN_API_VERSION 28
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any 
@@ -289,15 +289,16 @@ struct plugin_api {
     void (*lcd_puts_scroll_style)(int x, int y, const unsigned char* string,
                                   int style);
 #endif
-   void (*mpeg_flush_and_reload_tracks)(void);
-   int (*strncasecmp)(const char *s1, const char *s2, size_t n);
-   int (*mpeg_get_file_pos)(void);
-   unsigned long (*find_next_frame)(int fd, int *offset,
+    void (*mpeg_flush_and_reload_tracks)(void);
+    int (*strncasecmp)(const char *s1, const char *s2, size_t n);
+    int (*mpeg_get_file_pos)(void);
+    unsigned long (*find_next_frame)(int fd, int *offset,
                                     int max_offset, unsigned long last_header);
-   unsigned long (*mpeg_get_last_header)(void);
+    unsigned long (*mpeg_get_last_header)(void);
 #ifndef SIMULATOR
-   int (*system_memory_guard)(int newmode);
+    int (*system_memory_guard)(int newmode);
 #endif
+    int (*default_event_handler_ex)(int event, void (*callback)(void *), void *parameter);
 };
 
 /* defined by the plugin loader (plugin.c) */