X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=write_common.c;h=9af8d682075ccf91de2bff3ff7625ab7d9f0a598;hp=14ce819515010e84635e5f313f58a78071487f0f;hb=b71a84c94992821c4bd70f80a2fdb3d4e9a39a62;hpb=d0f36435b0f81368a778fda33f3a7df86830f5ac

diff --git a/write_common.c b/write_common.c
index 14ce8195..9af8d682 100644
--- a/write_common.c
+++ b/write_common.c
@@ -304,3 +304,31 @@ void print_writer_helps(int detailed)
 		ggo_print_help(&w->help, detailed);
 	}
 }
+
+static int get_btr_value(struct btr_node *btrn, const char *key, int32_t *result)
+{
+	char *buf = NULL;
+	int ret = btr_exec_up(btrn, key, &buf);
+
+	if (ret < 0)
+		return ret;
+	ret = para_atoi32(buf, result);
+	free(buf);
+	return ret;
+}
+
+/*
+ * Ask parent btr nodes for the samplerate of the current stream.
+ */
+int get_btr_samplerate(struct btr_node *btrn, int32_t *result)
+{
+	return get_btr_value(btrn, "samplerate", result);
+}
+
+/*
+ * Ask parent btr nodes for the channel count of the current stream.
+ */
+int get_btr_channels(struct btr_node *btrn, int32_t *result)
+{
+	return get_btr_value(btrn, "channels", result);
+}