5 files changed, 1 insertions, 22 deletions
diff --git a/audio/filter/af.c b/audio/filter/af.c
index 3f73ad9c58..62ba6a9665 100644
--- a/audio/filter/af.c
+++ b/audio/filter/af.c
@@ -159,24 +159,11 @@ static struct af_instance *af_create(struct af_stream *s, char *name,
         MP_ERR(s, "Couldn't find audio filter '%s'.\n", name);
         return NULL;
     }
-    const struct af_info *info = desc.p;
-    /* Make sure that the filter is not already in the list if it is
-       non-reentrant */
-    if (info->flags & AF_FLAGS_NOT_REENTRANT) {
-        for (struct af_instance *cur = s->first; cur; cur = cur->next) {
-            if (cur->info == info) {
-                MP_ERR(s, "There can only be one "
-                       "instance of the filter '%s' in each stream\n", name);
-                return NULL;
-            }
-        }
-    }
-
     MP_VERBOSE(s, "Adding filter %s \n", name);
 
     struct af_instance *af = talloc_zero(NULL, struct af_instance);
     *af = (struct af_instance) {
-        .info = info,
+        .info = desc.p,
         .data = talloc_zero(af, struct mp_audio),
         .log = mp_log_new(af, s->log, name),
         .replaygain_data = s->replaygain_data,
diff --git a/audio/filter/af.h b/audio/filter/af.h
index 199486509c..ba64379661 100644
--- a/audio/filter/af.h
+++ b/audio/filter/af.h
@@ -35,10 +35,6 @@ struct mpv_global;
 // Number of channels
 #define AF_NCH MP_NUM_CHANNELS
 
-// Flags used for defining the behavior of an audio filter
-#define AF_FLAGS_REENTRANT      0x00000000
-#define AF_FLAGS_NOT_REENTRANT  0x00000001
-
 // Flags for af->filter()
 #define AF_FILTER_FLAG_EOF 1
 
@@ -47,7 +43,6 @@ struct mpv_global;
 struct af_info {
     const char *info;
     const char *name;
-    const int flags;
     int (*open)(struct af_instance *vf);
     int priv_size;
     const void *priv_defaults;
diff --git a/audio/filter/af_drc.c b/audio/filter/af_drc.c
index 472758c4c7..7b375febf4 100644
--- a/audio/filter/af_drc.c
+++ b/audio/filter/af_drc.c
@@ -324,7 +324,6 @@ static int af_open(struct af_instance* af){
 const struct af_info af_info_drc = {
     .info = "Dynamic range compression filter",
     .name = "drc",
-    .flags = AF_FLAGS_NOT_REENTRANT,
     .open = af_open,
     .priv_size = sizeof(af_drc_t),
     .options = (const struct m_option[]) {
diff --git a/audio/filter/af_equalizer.c b/audio/filter/af_equalizer.c
index 781239c02a..cb4ecb2675 100644
--- a/audio/filter/af_equalizer.c
+++ b/audio/filter/af_equalizer.c
@@ -203,7 +203,6 @@ static int af_open(struct af_instance* af){
 const struct af_info af_info_equalizer = {
   .info = "Equalizer audio filter",
   .name = "equalizer",
-  .flags = AF_FLAGS_NOT_REENTRANT,
   .open = af_open,
   .priv_size = sizeof(af_equalizer_t),
   .options = (const struct m_option[]) {
diff --git a/audio/filter/af_volume.c b/audio/filter/af_volume.c
index 1b564f0983..7bd7edd66d 100644
--- a/audio/filter/af_volume.c
+++ b/audio/filter/af_volume.c
@@ -168,7 +168,6 @@ static int af_open(struct af_instance *af)
 const struct af_info af_info_volume = {
     .info = "Volume control audio filter",
     .name = "volume",
-    .flags = AF_FLAGS_NOT_REENTRANT,
     .open = af_open,
     .priv_size = sizeof(struct priv),
     .options = (const struct m_option[]) {