options: add options that set defaults for af/vf/ao/vo

There are some use cases for this. For example, you can use it to set
defaults of automatically inserted filters (like af_lavrresample). It's
also useful if you have a non-trivial VO configuration, and want to use
--vo to quickly change between the drivers without repeating the whole
configuration in the --vo argument.

1 files changed, 2 insertions, 0 deletions

diff --git a/audio/out/ao.c b/audio/out/ao.c
index 50c95830c3..562689c80b 100644
--- a/audio/out/ao.c
+++ b/audio/out/ao.c
@@ -150,6 +150,8 @@ static struct ao *ao_create(bool probing, struct mpv_global *global,
     if (ao->driver->encode != !!ao->encode_lavc_ctx)
         goto error;
     struct m_config *config = m_config_from_obj_desc(ao, &desc);
+    if (m_config_apply_defaults(config, name, global->opts->ao_defs) < 0)
+        goto error;
     if (m_config_set_obj_params(config, args) < 0)
         goto error;
     ao->priv = config->optstruct;