codecs: remove unused family field

MPlayer used this to distinguish multiple decoder wrappers (such as
libavcodec vs. binary codec loader vs. builtin decoders). It lost
meaning in mpv as non-libavcodec things were dropped. Now it doesn't
serve any purpose anymore.

Parsing was removed quite a while ago, and the recent filter change
removed any use of the internal family field. Get rid of it.

DOCS/man/input.rst

@@ -2104,9 +2104,6 @@ Property list
     List of decoders supported. This lists decoders which can be passed to
     ``--vd`` and ``--ad``.
 
-    ``family``
-        Decoder driver. Usually ``lavc`` for libavcodec.
-
     ``codec``
         Canonical codec name, which identifies the format the decoder can
         handle.
@@ -2127,7 +2124,6 @@ Property list
 
         MPV_FORMAT_NODE_ARRAY
             MPV_FORMAT_NODE_MAP (for each decoder entry)
-                "family"        MPV_FORMAT_STRING
                 "codec"         MPV_FORMAT_STRING
                 "driver"        MPV_FORMAT_STRING
                 "description"   MPV_FORMAT_STRING

audio/decode/ad_spdif.c

@@ -378,7 +378,7 @@ struct mp_decoder_list *select_spdif_codec(const char *codec, const char *pref)
     const char *suffix_name = dts_hd_allowed ? "dts_hd" : codec;
     char name[80];
     snprintf(name, sizeof(name), "spdif_%s", suffix_name);
-    mp_add_decoder(list, "spdif", codec, name,
+    mp_add_decoder(list, codec, name,
                    "libavformat/spdifenc audio pass-through decoder");
     return list;
 }

common/av_common.c

@@ -227,7 +227,7 @@ void mp_add_lavc_decoders(struct mp_decoder_list *list, enum AVMediaType type)
         if (!cur)
             break;
         if (av_codec_is_decoder(cur) && cur->type == type) {
-            mp_add_decoder(list, "lavc", mp_codec_from_av_codec_id(cur->id),
+            mp_add_decoder(list, mp_codec_from_av_codec_id(cur->id),
                            cur->name, cur->long_name);
         }
     }
@@ -242,7 +242,7 @@ void mp_add_lavc_encoders(struct mp_decoder_list *list)
         if (!cur)
             break;
         if (av_codec_is_encoder(cur)) {
-            mp_add_decoder(list, "lavc", mp_codec_from_av_codec_id(cur->id),
+            mp_add_decoder(list, mp_codec_from_av_codec_id(cur->id),
                            cur->name, cur->long_name);
         }
     }

common/codecs.c

@@ -21,11 +21,10 @@
 #include "common/msg.h"
 #include "codecs.h"
 
-void mp_add_decoder(struct mp_decoder_list *list, const char *family,
-                    const char *codec, const char *decoder, const char *desc)
+void mp_add_decoder(struct mp_decoder_list *list, const char *codec,
+                    const char *decoder, const char *desc)
 {
     struct mp_decoder_entry entry = {
-        .family = talloc_strdup(list, family),
         .codec = talloc_strdup(list, codec),
         .decoder = talloc_strdup(list, decoder),
         .desc = talloc_strdup(list, desc),
@@ -40,7 +39,7 @@ static void add_new(struct mp_decoder_list *to, struct mp_decoder_entry *entry,
 {
     if (!entry || (codec && strcmp(entry->codec, codec) != 0))
         return;
-    mp_add_decoder(to, entry->family, entry->codec, entry->decoder, entry->desc);
+    mp_add_decoder(to, entry->codec, entry->decoder, entry->desc);
 }
 
 // Select a decoder from the given list for the given codec. The selection
@@ -72,11 +71,6 @@ struct mp_decoder_list *mp_select_decoders(struct mp_log *log,
             stop = true;
             break;
         }
-        if (bstr_find0(entry, ":") >= 0) {
-            mp_err(log, "Codec family selection was removed. "
-                        "Pass the codec name directly.\n");
-            break;
-        }
         for (int n = 0; n < all->num_entries; n++) {
             struct mp_decoder_entry *cur = &all->entries[n];
             if (bstr_equals0(entry, cur->decoder))

common/codecs.h

@@ -21,7 +21,6 @@
 struct mp_log;
 
 struct mp_decoder_entry {
-    const char *family;         // decoder module (e.g. ad_lavc => "lavc")
     const char *codec;          // name of the codec (e.g. "mp3")
     const char *decoder;        // decoder name (e.g. "mp3float")
     const char *desc;           // human readable description
@@ -32,8 +31,8 @@ struct mp_decoder_list {
     int num_entries;
 };
 
-void mp_add_decoder(struct mp_decoder_list *list, const char *family,
-                    const char *codec, const char *decoder, const char *desc);
+void mp_add_decoder(struct mp_decoder_list *list, const char *codec,
+                    const char *decoder, const char *desc);
 
 struct mp_decoder_list *mp_select_decoders(struct mp_log *log,
                                            struct mp_decoder_list *all,

player/command.c

@@ -3538,7 +3538,6 @@ static int get_decoder_entry(int item, int action, void *arg, void *ctx)
     struct mp_decoder_entry *c = &codecs->entries[item];
 
     struct m_sub_property props[] = {
-        {"family",      SUB_PROP_STR(c->family)},
         {"codec",       SUB_PROP_STR(c->codec)},
         {"driver" ,     SUB_PROP_STR(c->decoder)},
         {"description", SUB_PROP_STR(c->desc)},