audio/filters: use refcounted frames for some simple filters

These are read-only, and very trivial to convert.

4 files changed, 18 insertions, 10 deletions

diff --git a/audio/filter/af_dummy.c b/audio/filter/af_dummy.c
index 61f2207d84..3d3ec27654 100644
--- a/audio/filter/af_dummy.c
+++ b/audio/filter/af_dummy.c
@@ -41,15 +41,16 @@ static int control(struct af_instance* af, int cmd, void* arg)
 }
 
 // Filter data through filter
-static int filter(struct af_instance* af, struct mp_audio* data, int flags)
+static int filter(struct af_instance* af, struct mp_audio* data)
 {
+    af_add_output_frame(af, data);
     return 0;
 }
 
 // Allocate memory and set function pointers
 static int af_open(struct af_instance* af){
   af->control=control;
-  af->filter=filter;
+  af->filter_frame=filter;
   return AF_OK;
 }
 
diff --git a/audio/filter/af_export.c b/audio/filter/af_export.c
index 8e54fec5f5..fb5503f0af 100644
--- a/audio/filter/af_export.c
+++ b/audio/filter/af_export.c
@@ -162,8 +162,10 @@ static void uninit( struct af_instance* af )
    af audio filter instance
    data audio data
 */
-static int filter( struct af_instance* af, struct mp_audio* data, int flags)
+static int filter(struct af_instance *af, struct mp_audio *data)
 {
+  if (!data)
+    return 0;
   struct mp_audio*      c   = data;          // Current working data
   af_export_t*  s   = af->priv;     // Setup for this instance
   int16_t*      a   = c->planes[0];          // Incomming sound
@@ -199,6 +201,7 @@ static int filter( struct af_instance* af, struct mp_audio* data, int flags)
            &(s->count), sizeof(s->count));
   }
 
+  af_add_output_frame(af, data);
   return 0;
 }
 
@@ -210,7 +213,7 @@ static int af_open( struct af_instance* af )
 {
   af->control = control;
   af->uninit  = uninit;
-  af->filter  = filter;
+  af->filter_frame = filter;
   af_export_t *priv = af->priv;
 
   if (!priv->filename || !priv->filename[0]) {
diff --git a/audio/filter/af_forcespeed.c b/audio/filter/af_forcespeed.c
index d2d2f9abb7..3f2ca831c9 100644
--- a/audio/filter/af_forcespeed.c
+++ b/audio/filter/af_forcespeed.c
@@ -44,9 +44,11 @@ static int control(struct af_instance *af, int cmd, void *arg)
     return AF_UNKNOWN;
 }
 
-static int filter(struct af_instance *af, struct mp_audio *data, int flags)
+static int filter(struct af_instance *af, struct mp_audio *data)
 {
-    mp_audio_copy_config(data, af->data);
+    if (data)
+        mp_audio_copy_config(data, af->data);
+    af_add_output_frame(af, data);
     return 0;
 }
 
@@ -54,7 +56,7 @@ static int af_open(struct af_instance *af)
 {
     struct priv *priv = af->priv;
     af->control = control;
-    af->filter = filter;
+    af->filter_frame = filter;
     priv->speed = 1.0;
     return AF_OK;
 }
diff --git a/audio/filter/af_format.c b/audio/filter/af_format.c
index 14b0d34d42..c0fe354a39 100644
--- a/audio/filter/af_format.c
+++ b/audio/filter/af_format.c
@@ -95,16 +95,18 @@ static int control(struct af_instance *af, int cmd, void *arg)
     return AF_UNKNOWN;
 }
 
-static int filter(struct af_instance *af, struct mp_audio *data, int flags)
+static int filter(struct af_instance *af, struct mp_audio *data)
 {
-    mp_audio_copy_config(data, af->data);
+    if (data)
+        mp_audio_copy_config(data, af->data);
+    af_add_output_frame(af, data);
     return 0;
 }
 
 static int af_open(struct af_instance *af)
 {
     af->control = control;
-    af->filter = filter;
+    af->filter_frame = filter;
 
     force_in_params(af, af->data);
     force_out_params(af, af->data);