command: with lavfi-complex, make current-tracks return the first one

This behavior is more convenient and allows profile conditions like:

[video]
profile-cond=get('current-tracks/video/image') == false

[image]
profile-cond=get('current-tracks/video/image')

Otherwise, these profiles have to be manually applied and restored in a
script.

The note about discouraging the use of current-tracks in scripts is
removed, because it makes people avoid using this convenient property.
It was added in 720bcd79d03 without leaving an explanation of why you
shouldn't use it, and the only reason seems to be that it doesn't work
with lavfi-complex, but this commit changes that.

1 files changed, 10 insertions, 0 deletions

diff --git a/player/command.c b/player/command.c
index 2f17de2cf8..4f0055513d 100644
--- a/player/command.c
+++ b/player/command.c
@@ -2076,6 +2076,16 @@ static int property_current_tracks(void *ctx, struct m_property *prop,
         return M_PROPERTY_UNKNOWN;
 
     struct track *t = mpctx->current_track[order][type];
+
+    if (!t && mpctx->lavfi) {
+        for (int n = 0; n < mpctx->num_tracks; n++) {
+            if (mpctx->tracks[n]->type == type && mpctx->tracks[n]->selected) {
+                t = mpctx->tracks[n];
+                break;
+            }
+        }
+    }
+
     if (!t)
         return M_PROPERTY_UNAVAILABLE;