af_channelsplit: switch to an AVOptions-based system.

libavfilter/af_channelsplit.c

@@ -59,12 +59,6 @@ static int init(AVFilterContext *ctx, const char *arg)
     int nb_channels;
     int ret = 0, i;
 
-    s->class = &channelsplit_class;
-    av_opt_set_defaults(s);
-    if ((ret = av_set_options_string(s, arg, "=", ":")) < 0) {
-        av_log(ctx, AV_LOG_ERROR, "Error parsing options string '%s'.\n", arg);
-        return ret;
-    }
     if (!(s->channel_layout = av_get_channel_layout(s->channel_layout_str))) {
         av_log(ctx, AV_LOG_ERROR, "Error parsing channel layout '%s'.\n",
                s->channel_layout_str);
@@ -84,7 +78,6 @@ static int init(AVFilterContext *ctx, const char *arg)
     }
 
 fail:
-    av_opt_free(s);
     return ret;
 }
 
@@ -149,6 +142,7 @@ AVFilter avfilter_af_channelsplit = {
     .name           = "channelsplit",
     .description    = NULL_IF_CONFIG_SMALL("Split audio into per-channel streams"),
     .priv_size      = sizeof(ChannelSplitContext),
+    .priv_class     = &channelsplit_class,
 
     .init           = init,
     .query_formats  = query_formats,