1 files changed, 54 insertions, 0 deletions
diff --git a/modules/mpa/sdp.c b/modules/mpa/sdp.c
new file mode 100644
index 0000000..0e4d811
--- /dev/null
+++ b/modules/mpa/sdp.c
@@ -0,0 +1,54 @@
+/**
+ * @file mpa/sdp.c mpa SDP Functions
+ *
+ * Copyright (C) 2016 Symonics GmbH
+ */
+
+#include <re.h>
+#include <baresip.h>
+#include <string.h>
+#include "mpa.h"
+
+
+static void assign_if(uint32_t *v, const struct pl *pl,
+		      uint32_t min, uint32_t max)
+{
+	const uint32_t val = pl_u32(pl);
+
+	if (val < min || val > max)
+		return;
+
+	*v = val;
+}
+
+
+void mpa_decode_fmtp(struct mpa_param *prm, const char *fmtp)
+{
+	struct pl pl, val;
+
+	if (!prm || !fmtp)
+		return;
+
+	pl_set_str(&pl, fmtp);
+
+	if (fmt_param_get(&pl, "bitrate", &val))
+		assign_if(&prm->bitrate, &val, 32000, 512000);
+
+	if (fmt_param_get(&pl, "samplerate", &val))
+		assign_if(&prm->samplerate, &val, 16000, 48000);
+
+	if (fmt_param_get(&pl, "layer", &val))
+		assign_if(&prm->layer, &val, 1, 3);
+
+	if (fmt_param_get(&pl, "mode", &val)) {
+
+		if(!strncmp("stereo",pl.p,pl.l))
+			prm->mode = STEREO;
+		else if(!strncmp("joint_stereo",pl.p,pl.l))
+			prm->mode = JOINT_STEREO;
+		else if(!strncmp("single_channel",pl.p,pl.l))
+			prm->mode = SINGLE_CHANNEL;
+		else if(!strncmp("dual_channel",pl.p,pl.l))
+			prm->mode = DUAL_CHANNEL;
+	}	
+}