From dbe9f0247116c089bf7922745cb388633bfa3dc8 Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Wed, 11 Aug 2021 12:52:10 +0200
Subject: [PATCH] filter-chain: add support to read from offset

So that the channel of the response file can be set
---
 src/modules/module-filter-chain/builtin_plugin.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/modules/module-filter-chain/builtin_plugin.c b/src/modules/module-filter-chain/builtin_plugin.c
index 51c4f174c..35a03bc09 100644
--- a/src/modules/module-filter-chain/builtin_plugin.c
+++ b/src/modules/module-filter-chain/builtin_plugin.c
@@ -416,6 +416,10 @@ static void * convolver_instantiate(const struct fc_descriptor * Descriptor,
 			if (spa_json_get_int(&it[1], &blocksize) <= 0)
 				return NULL;
 		}
+		else if (spa_streq(key, "offset")) {
+			if (spa_json_get_int(&it[1], &index) <= 0)
+				return NULL;
+		}
 		else if (spa_json_next(&it[1], &val) < 0)
 			break;
 	}