player: make --lavfi-complex changeable at runtime

Tends to be somewhat glitchy if subtitles are enabled, and you enable
and disable tracks.

On error, this will disable --lavfi-complex, which will result in
whatever behavior.

1 files changed, 11 insertions, 2 deletions

diff --git a/player/lavfi.c b/player/lavfi.c
index c597387937..ee0ca281e4 100644
--- a/player/lavfi.c
+++ b/player/lavfi.c
@@ -249,12 +249,19 @@ struct lavfi *lavfi_create(struct mp_log *log, char *graph_string)
 
 void lavfi_destroy(struct lavfi *c)
 {
+    if (!c)
+        return;
     free_graph(c);
     clear_data(c);
     av_frame_free(&c->tmp_frame);
     talloc_free(c);
 }
 
+const char *lavfi_get_graph(struct lavfi *c)
+{
+    return c->graph_string;
+}
+
 struct lavfi_pad *lavfi_find_pad(struct lavfi *c, char *name)
 {
     for (int n = 0; n < c->num_pads; n++) {
@@ -484,9 +491,11 @@ static void dump_graph(struct lavfi *c)
 #endif
 }
 
-void lavfi_set_hwdec_devs(struct lavfi *c, struct mp_hwdec_devices *hwdevs)
+void lavfi_pad_set_hwdec_devs(struct lavfi_pad *pad,
+                              struct mp_hwdec_devices *hwdevs)
 {
-    c->hwdec_devs = hwdevs;
+    // We don't actually treat this per-pad.
+    pad->main->hwdec_devs = hwdevs;
 }
 
 // Initialize the graph if all inputs have formats set. If it's already