[vlc-devel] [RFC 2/2] listen player info from Qt module

[Romain Vimont]

(just print logs)
---
 modules/gui/qt/qt.cpp | 67 +++++++++++++++++++++++++++++++++++++++++++
 modules/gui/qt/qt.hpp |  1 +
 2 files changed, 68 insertions(+)

diff --git a/modules/gui/qt/qt.cpp b/modules/gui/qt/qt.cpp
index 9546a2e275..4c6068f8f7 100644
--- a/modules/gui/qt/qt.cpp
+++ b/modules/gui/qt/qt.cpp
@@ -401,6 +401,65 @@ static void Abort( void *obj )
 }
 #endif
 
+static void
+debug_print_pi_input(vlc_object_t *obj, struct vlc_pi_input *pi_input)
+{
+    msg_Info(obj, "[PI INPUT]");
+    size_t sources_count = vlc_pi_input_GetSourcesCount(pi_input);
+    for (size_t i = 0; i < sources_count; ++i)
+    {
+        const struct vlc_pi_source *pi_source =
+            vlc_pi_input_GetSource(pi_input, i);
+        msg_Info(obj, "  [PI SOURCE %zd]", i);
+        size_t streams_count = vlc_pi_source_GetStreamsCount(pi_source);
+        for (size_t j = 0; j < streams_count; ++j)
+        {
+            const struct vlc_pi_stream *pi_stream =
+                vlc_pi_source_GetStream(pi_source, j);
+            msg_Info(obj, "    [PI STREAM %zd]: %s (%s): %s", j,
+                     vlc_pi_stream_GetModuleLongName(pi_stream),
+                     vlc_pi_stream_GetModuleShortName(pi_stream),
+                     vlc_pi_stream_GetUrl(pi_stream));
+        }
+    }
+}
+
+static void
+on_reset(struct vlc_pi_input *pi_input, void *userdata)
+{
+    vlc_object_t *p_this = reinterpret_cast<vlc_object_t *>(userdata);
+    msg_Info(p_this, "[PI] --> on_reset");
+    debug_print_pi_input(p_this, pi_input);
+}
+
+static void
+on_source_added(struct vlc_pi_input *pi_input, size_t source_index,
+                struct vlc_pi_source *pi_source, void *userdata)
+{
+    (void) source_index;
+    (void) pi_source;
+    vlc_object_t *p_this = reinterpret_cast<vlc_object_t *>(userdata);
+    msg_Info(p_this, "[PI] --> on_source_added");
+    debug_print_pi_input(p_this, pi_input);
+}
+
+static void
+on_source_demux_updated(struct vlc_pi_input *pi_input, size_t source_index,
+                        struct vlc_pi_source *pi_source, void *userdata)
+{
+    (void) source_index;
+    (void) pi_source;
+    vlc_object_t *p_this = reinterpret_cast<vlc_object_t *>(userdata);
+    msg_Info(p_this, "[PI] --> on_source_demux_updated");
+    debug_print_pi_input(p_this, pi_input);
+}
+
+const struct vlc_pi_input_callbacks vlc_pi_input_callbacks = {
+    .on_reset = on_reset,
+    .on_source_added = on_source_added,
+    .on_source_demux_updated = on_source_demux_updated,
+};
+
 /* Open Interface */
 static int Open( vlc_object_t *p_this, bool isDialogProvider )
 {
@@ -455,6 +514,11 @@ static int Open( vlc_object_t *p_this, bool isDialogProvider )
     p_sys->p_playlist = playlist;
     p_sys->p_player = vlc_playlist_GetPlayer( p_sys->p_playlist );
 
+    struct vlc_pi_input *info = vlc_player_GetInputInfo(p_sys->p_player);
+    p_sys->player_info_listener =
+        vlc_pi_input_AddListener(info, &vlc_pi_input_callbacks, p_this);
+    assert(p_sys->player_info_listener);
+
     /* */
 #ifdef Q_OS_MAC
     /* Run mainloop on the main thread as Cocoa requires */
@@ -504,6 +568,9 @@ static void Close( vlc_object_t *p_this )
     intf_thread_t *p_intf = (intf_thread_t *)p_this;
     intf_sys_t *p_sys = p_intf->p_sys;
 
+    struct vlc_pi_input *info = vlc_player_GetInputInfo(p_sys->p_player);
+    vlc_pi_input_RemoveListener(info, p_sys->player_info_listener);
+
     /* And quit */
     msg_Dbg( p_this, "requesting exit..." );
     QVLCApp::triggerQuit();
diff --git a/modules/gui/qt/qt.hpp b/modules/gui/qt/qt.hpp
index 2cccdce754..e6677bc5fb 100644
--- a/modules/gui/qt/qt.hpp
+++ b/modules/gui/qt/qt.hpp
@@ -82,6 +82,7 @@ struct intf_sys_t
 
     vlc_playlist_t *p_playlist;  /* playlist */
     vlc_player_t *p_player; /* player */
+    vlc_pi_input_listener_id *player_info_listener;
     vlc::playlist::PlaylistControllerModel* p_mainPlaylistController;
     PlayerController* p_mainPlayerController;
 
-- 
2.20.1