From 6ebac1f794623e2b62d599f944fb91d42a7b1c3d Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Thu, 19 Nov 2020 15:12:04 +0100
Subject: player: allow vo to be switched at runtime

---
 player/command.c  | 10 ++++++++++
 player/core.h     |  3 ++-
 player/loadfile.c | 17 +++++++++++------
 3 files changed, 23 insertions(+), 7 deletions(-)

(limited to 'player')

diff --git a/player/command.c b/player/command.c
index 066e8be784..098a11d24f 100644
--- a/player/command.c
+++ b/player/command.c
@@ -6525,6 +6525,16 @@ void mp_option_change_callback(void *ctx, struct m_config_option *co, int flags,
         mpctx->ipc_ctx = mp_init_ipc(mpctx->clients, mpctx->global);
     }
 
+    if (opt_ptr == &opts->vo->video_driver_list) {
+        struct track *track = mpctx->current_track[0][STREAM_VIDEO];
+        uninit_video_out(mpctx);
+        reinit_video_chain(mpctx);
+        if (track)
+            reselect_demux_stream(mpctx, track, true);
+
+        mp_wakeup_core(mpctx);
+    }
+
     if (flags & UPDATE_AUDIO)
         reload_audio_output(mpctx);
 
diff --git a/player/core.h b/player/core.h
index ec154dedd0..f2f0a15a00 100644
--- a/player/core.h
+++ b/player/core.h
@@ -547,7 +547,8 @@ void mp_set_playlist_entry(struct MPContext *mpctx, struct playlist_entry *e);
 void mp_play_files(struct MPContext *mpctx);
 void update_demuxer_properties(struct MPContext *mpctx);
 void print_track_list(struct MPContext *mpctx, const char *msg);
-void reselect_demux_stream(struct MPContext *mpctx, struct track *track);
+void reselect_demux_stream(struct MPContext *mpctx, struct track *track,
+                           bool refresh_only);
 void prepare_playlist(struct MPContext *mpctx, struct playlist *pl);
 void autoload_external_files(struct MPContext *mpctx, struct mp_cancel *cancel);
 struct track *select_default_track(struct MPContext *mpctx, int order,
diff --git a/player/loadfile.c b/player/loadfile.c
index 0adc8e351d..058be92c83 100644
--- a/player/loadfile.c
+++ b/player/loadfile.c
@@ -362,7 +362,9 @@ void update_demuxer_properties(struct MPContext *mpctx)
 
 // Enables or disables the stream for the given track, according to
 // track->selected.
-void reselect_demux_stream(struct MPContext *mpctx, struct track *track)
+// With refresh_only=true, refreshes the stream if it's enabled.
+void reselect_demux_stream(struct MPContext *mpctx, struct track *track,
+                           bool refresh_only)
 {
     if (!track->stream)
         return;
@@ -372,7 +374,10 @@ void reselect_demux_stream(struct MPContext *mpctx, struct track *track)
         if (track->type == STREAM_SUB)
             pts -= 10.0;
     }
-    demuxer_select_track(track->demuxer, track->stream, pts, track->selected);
+    if (refresh_only)
+        demuxer_refresh_track(track->demuxer, track->stream, pts);
+    else
+        demuxer_select_track(track->demuxer, track->stream, pts, track->selected);
 }
 
 static void enable_demux_thread(struct MPContext *mpctx, struct demuxer *demux)
@@ -658,14 +663,14 @@ void mp_switch_track_n(struct MPContext *mpctx, int order, enum stream_type type
         if (current->remux_sink)
             close_recorder_and_error(mpctx);
         current->selected = false;
-        reselect_demux_stream(mpctx, current);
+        reselect_demux_stream(mpctx, current, false);
     }
 
     mpctx->current_track[order][type] = track;
 
     if (track) {
         track->selected = true;
-        reselect_demux_stream(mpctx, track);
+        reselect_demux_stream(mpctx, track, false);
     }
 
     if (type == STREAM_VIDEO && order == 0) {
@@ -1341,7 +1346,7 @@ done:
 
     if (mpctx->playback_initialized) {
         for (int n = 0; n < mpctx->num_tracks; n++)
-            reselect_demux_stream(mpctx, mpctx->tracks[n]);
+            reselect_demux_stream(mpctx, mpctx->tracks[n], false);
     }
 
     mp_notify(mpctx, MPV_EVENT_TRACKS_CHANGED, NULL);
@@ -1583,7 +1588,7 @@ static void play_current_file(struct MPContext *mpctx)
     }
 
     for (int n = 0; n < mpctx->num_tracks; n++)
-        reselect_demux_stream(mpctx, mpctx->tracks[n]);
+        reselect_demux_stream(mpctx, mpctx->tracks[n], false);
 
     update_demuxer_properties(mpctx);
 
-- 
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