add MSG_TYPE_AUDIO

Signed-off-by: cetc54 <user@cetc.com>

src/main.c

@@ -6,6 +6,8 @@
 #include "udp_reader.h"
 #include "xtty.h"
 
+#define MSG_TYPE_AUDIO  0x1101
+
 #define ETH_IFNAME "eth0"
 #define XTTY_DEV   "/dev/ttymxc1"
 #define GRP_ADDR   "225.0.0.22"
@@ -45,8 +47,8 @@ static void __make_header(struct tx_state *tx, unsigned char *buf, int dlen)
 
     buf[18] = dlen & 0xff;
     buf[19] = (dlen >> 8) & 0xff;
-    buf[20] = 0x01;
-    buf[21] = 0x11;
+    buf[20] = MSG_TYPE_AUDIO & 0xff;
+    buf[21] = (MSG_TYPE_AUDIO >> 8) & 0xff;
 }
 
 static void __to_term(struct msg_type_pcma *pcma)
@@ -85,6 +87,7 @@ static void __isr_handler(void *data, unsigned char * buf, int len)
 static void __sock_rx(void *ud, unsigned char *buf, int len)
 {
     int alen;
+    int msg_type;
 
     if (len < 25) {
         log_err("recv too short packet: %d bytes", len);
@@ -97,19 +100,27 @@ static void __sock_rx(void *ud, unsigned char *buf, int len)
         return;
     }
 
-    if (!mcu_slot_is_enabled(SLOT)) {
-        mcu_slot_enable(SLOT, 1);
-    }
-
-    if (!udp_rx->ptt) {
-        mcu_ptt_on();
-        udp_rx->ptt = 1;
-        udp_tx->state = STATE_RX;
-        log_info("ptt on");
+    msg_type = buf[20] | (buf[21] << 8);
+    switch (msg_type) {
+        case MSG_TYPE_AUDIO:
+            if (!mcu_slot_is_enabled(SLOT)) {
+                mcu_slot_enable(SLOT, 1);
+            }
+
+            if (!udp_rx->ptt) {
+                mcu_ptt_on();
+                udp_rx->ptt = 1;
+                udp_tx->state = STATE_RX;
+                log_info("ptt on");
+            }
+
+            mcu_write_voice(SLOT, buf + 24, alen <= 160 ? alen : 160);
+            timer_active(udp_rx->tm, 800);
+            break;
+        default:
+            log_err("Unknown msg type: %04x", msg_type);
+            break;
     }
-
-    mcu_write_voice(SLOT, buf + 24, alen <= 160 ? alen : 160);
-    timer_active(udp_rx->tm, 800);
 }
 
 static int __mcast_rx__(udp_t *ur, void *data)