monitor: Add support for GetTotalNumOfItems

Support for AVRCP Get Total NUmber Of Items added to btmon.

      Channel: 66 len 17 ctrl 0x060c [PSM 27 mode 3] {chan 2}
      I-frame: Unsegmented TxSeq 6 ReqSeq 6
      AVCTP Browsing: Command: type 0x00 label 6 PID 0x110e
        AVRCP: GetTotalNumOfItems: len 0x000b
              Scope: 0x01 (Media Player Virtual Filesystem)

      Channel: 66 len 17 ctrl 0x070c [PSM 27 mode 3] {chan 2}
      I-frame: Unsegmented TxSeq 6 ReqSeq 7
      AVCTP Browsing: Response: type 0x00 label 6 PID 0x110e
        AVRCP: GetTotalNumOfItems: len 0x0007
          Status: 0x04 (Success)
          UIDCounter: 0x332e (13102)
          Number of Items: 0x0001 (1)

1 files changed, 54 insertions, 0 deletions

diff --git a/monitor/avctp.c b/monitor/avctp.c
index 556320c63..a54b051e6 100644
--- a/monitor/avctp.c
+++ b/monitor/avctp.c
@@ -141,6 +141,7 @@
 #define AVRCP_CHANGE_PATH		0x72
 #define AVRCP_GET_ITEM_ATTRIBUTES	0x73
 #define AVRCP_PLAY_ITEM			0x74
+#define AVRCP_GET_TOTAL_NUMBER_OF_ITEMS	0x75
 #define AVRCP_SEARCH			0x80
 #define AVRCP_ADD_TO_NOW_PLAYING	0x90
 #define AVRCP_GENERAL_REJECT		0xA0
@@ -440,6 +441,8 @@ static const char *pdu2str(uint8_t pduid)
 		return "GetItemAttributes";
 	case AVRCP_PLAY_ITEM:
 		return "PlayItem";
+	case AVRCP_GET_TOTAL_NUMBER_OF_ITEMS:
+		return "GetTotalNumOfItems";
 	case AVRCP_SEARCH:
 		return "Search";
 	case AVRCP_ADD_TO_NOW_PLAYING:
@@ -2045,6 +2048,54 @@ response:
 	return true;
 }
 
+static bool avrcp_get_total_number_of_items(struct avctp_frame *avctp_frame)
+{
+	struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
+	uint32_t num_of_items;
+	uint16_t uidcounter;
+	uint8_t scope, status, indent = 2;
+
+	if (avctp_frame->hdr & 0x02)
+		goto response;
+
+	if (frame->size < 4) {
+		printf("PDU Malformed\n");
+		packet_hexdump(frame->data, frame->size);
+		return false;
+	}
+
+	if (!l2cap_frame_get_u8(frame, &scope))
+		return false;
+
+	print_field("%*cScope: 0x%02x (%s)", (indent - 8), ' ',
+						scope, scope2str(scope));
+
+	return true;
+
+response:
+	if (!l2cap_frame_get_u8(frame, &status))
+		return false;
+
+	print_field("%*cStatus: 0x%02x (%s)", indent, ' ',
+				status, error2str(status));
+
+	if (frame->size == 1)
+		return false;
+
+	if (!l2cap_frame_get_be16(frame, &uidcounter))
+		return false;
+
+	print_field("%*cUIDCounter: 0x%04x (%u)", indent, ' ',
+				uidcounter, uidcounter);
+
+	if (!l2cap_frame_get_be32(frame, &num_of_items))
+		return false;
+
+	print_field("%*cNumber of Items: 0x%04x (%u)", indent, ' ',
+				num_of_items, num_of_items);
+
+	return true;
+}
 
 static bool avrcp_search_item(struct avctp_frame *avctp_frame)
 {
@@ -2374,6 +2425,9 @@ static bool avrcp_browsing_packet(struct avctp_frame *avctp_frame)
 	case AVRCP_GET_ITEM_ATTRIBUTES:
 		avrcp_get_item_attributes(avctp_frame);
 		break;
+	case AVRCP_GET_TOTAL_NUMBER_OF_ITEMS:
+		avrcp_get_total_number_of_items(avctp_frame);
+		break;
 	case AVRCP_SEARCH:
 		avrcp_search_item(avctp_frame);
 		break;