codecs: add deregister_codec API

Change-Id: I83ecc7e4f8c827c83c2f6b62918f042d023daee4
Reviewed-on: https://code.wireshark.org/review/13575
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/codecs/codecs.c b/codecs/codecs.c
index f7921eade2..7f628a7043 100644
--- a/codecs/codecs.c
+++ b/codecs/codecs.c
@@ -169,6 +169,20 @@ register_codec(const char *name, codec_init_fn init_fn, codec_release_fn release
     return TRUE;
 }
 
+/* Deregister a codec by name. */
+gboolean
+deregister_codec(const char *name)
+{
+    gpointer key, value;
+
+    if (registered_codecs && g_hash_table_lookup_extended(registered_codecs, name, &key, &value)) {
+        g_hash_table_remove(registered_codecs, name);
+        g_free(value);
+        return TRUE;
+    }
+    return FALSE;
+}
+
 void *codec_init(codec_handle_t codec)
 {
     if (!codec) return NULL;