stream_bluray: implement navigation interface for Blu-ray stream

This commit introduces new stream protocols: bdnav(and others).
bdnav stream shares lots of codes with original bluray stream, so
it's not separated in different source file.

Major difference from bluray is that bdnav does not support longest
title because there is no way to query that information.
bdnav://menu and bdnav://first correspond to top menu title and
first play title respectively, though they often point same title.

Also, binary position based seeking has been removed, because it
didn't have no point.

1 files changed, 6 insertions, 0 deletions

diff --git a/stream/stream_dvdnav.h b/stream/stream_dvdnav.h
index e27af6eb1e..9accf0c87a 100644
--- a/stream/stream_dvdnav.h
+++ b/stream/stream_dvdnav.h
@@ -35,8 +35,11 @@ enum mp_nav_event_type {
     MP_NAV_EVENT_HIGHLIGHT,     // highlight changed
     MP_NAV_EVENT_MENU_MODE,     // menu mode on/off
     MP_NAV_EVENT_EOF,           // it's over
+    MP_NAV_EVENT_OVERLAY,       // overlay changed
 };
 
+struct sub_bitmap;
+
 struct mp_nav_event {
     enum mp_nav_event_type event;
     union {
@@ -51,6 +54,9 @@ struct mp_nav_event {
         struct {
             bool enable;
         } menu_mode;
+        struct {
+            struct sub_bitmap *images[2];
+        } overlay;
     } u;
 };