audio: add global options for resampler defaults

This is part of trying to get rid of --af-defaults, and the af
resample filter.

It requires a complicated mechanism to set the defaults on the resample
filter for backwards compatibility.

1 files changed, 26 insertions, 0 deletions

diff --git a/audio/filter/af_lavrresample.c b/audio/filter/af_lavrresample.c
index 55eb6b0f20..96387060b1 100644
--- a/audio/filter/af_lavrresample.c
+++ b/audio/filter/af_lavrresample.c
@@ -32,6 +32,7 @@
 
 #include "common/av_common.h"
 #include "common/msg.h"
+#include "options/m_config.h"
 #include "options/m_option.h"
 #include "audio/filter/af.h"
 #include "audio/fmt-conversion.h"
@@ -42,6 +43,7 @@ struct af_resample {
     int allow_detach;
     double playback_speed;
     struct mp_resample_opts opts;
+    int global_normalize;
     struct mp_aconverter *converter;
 };
 
@@ -142,11 +144,34 @@ static int af_open(struct af_instance *af)
     af->filter_frame = filter;
     af->filter_out = filter_out;
 
+    if (s->opts.normalize < 0)
+        s->opts.normalize = s->global_normalize;
+
     s->converter = mp_aconverter_create(af->global, af->log, &s->opts);
 
     return AF_OK;
 }
 
+static void set_defaults(struct mpv_global *global, void *p)
+{
+    struct af_resample *s = p;
+
+    struct mp_resample_opts *opts = &s->opts;
+
+    struct mp_resample_opts *src_opts =
+        mp_get_config_group(s, global, &resample_config);
+
+    s->global_normalize = src_opts->normalize;
+
+    assert(!opts->avopts); // we don't set a default value, so it must be NULL
+
+    *opts = *src_opts;
+
+    opts->avopts = NULL;
+    struct m_option dummy = {.type = &m_option_type_keyvalue_list};
+    m_option_copy(&dummy, &opts->avopts, &src_opts->avopts);
+}
+
 #define OPT_BASE_STRUCT struct af_resample
 
 const struct af_info af_info_lavrresample = {
@@ -170,4 +195,5 @@ const struct af_info af_info_lavrresample = {
         OPT_KEYVALUELIST("o", opts.avopts, 0),
         {0}
     },
+    .set_defaults = set_defaults,
 };