From 8731902f621f1ce8218514ec258ff7e50c530fb1 Mon Sep 17 00:00:00 2001
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: Wed, 2 Apr 2014 11:27:44 +0300
Subject: [PATCH] android/avrcp: Add avrcp_change_path() function

---
 android/avrcp-lib.c | 51 +++++++++++++++++++++++++++++++++++++++++++++
 android/avrcp-lib.h |  4 ++++
 2 files changed, 55 insertions(+)

diff --git a/android/avrcp-lib.c b/android/avrcp-lib.c
index bfe5d4415..afac845af 100644
--- a/android/avrcp-lib.c
+++ b/android/avrcp-lib.c
@@ -1716,6 +1716,57 @@ int avrcp_get_folder_items(struct avrcp *session, uint8_t scope,
 					get_folder_items_rsp, session);
 }
 
+static gboolean change_path_rsp(struct avctp *conn, uint8_t *operands,
+					size_t operand_count, void *user_data)
+{
+	struct avrcp *session = user_data;
+	struct avrcp_player *player = session->player;
+	struct avrcp_browsing_header *pdu;
+	uint32_t items = 0;
+	int err;
+
+	DBG("");
+
+	if (!player || !player->cfm || !player->cfm->change_path)
+		return FALSE;
+
+	pdu = parse_browsing_pdu(operands, operand_count);
+	if (!pdu) {
+		err = -EPROTO;
+		goto done;
+	}
+
+	err = parse_browsing_status(pdu);
+	if (err < 0)
+		goto done;
+
+	if (pdu->params_len < 5) {
+		err = -EPROTO;
+		goto done;
+	}
+
+	items = get_be32(&pdu->params[1]);
+
+done:
+	player->cfm->change_path(session, err, items, player->user_data);
+
+	return FALSE;
+}
+
+int avrcp_change_path(struct avrcp *session, uint8_t direction, uint64_t uid,
+							uint16_t counter)
+{
+	uint8_t pdu[11];
+
+	put_be16(counter, &pdu[0]);
+	pdu[2] = direction;
+	put_be64(uid, &pdu[3]);
+
+	return avrcp_send_browsing_req(session, AVRCP_CHANGE_PATH,
+					pdu, sizeof(pdu),
+					change_path_rsp, session);
+}
+
 int avrcp_get_capabilities_rsp(struct avrcp *session, uint8_t transaction,
 						uint8_t number, uint8_t *events)
 {
diff --git a/android/avrcp-lib.h b/android/avrcp-lib.h
index 894310876..460ce8a08 100644
--- a/android/avrcp-lib.h
+++ b/android/avrcp-lib.h
@@ -208,6 +208,8 @@ struct avrcp_control_cfm {
 	void (*get_folder_items) (struct avrcp *session, int err,
 					uint16_t counter, uint16_t number,
 					uint8_t *params, void *user_data);
+	void (*change_path) (struct avrcp *session, int err,
+					uint32_t items, void *user_data);
 };
 
 struct avrcp_passthrough_handler {
@@ -258,6 +260,8 @@ int avrcp_set_browsed_player(struct avrcp *session, uint16_t player_id);
 int avrcp_get_folder_items(struct avrcp *session, uint8_t scope,
 				uint32_t start, uint32_t end, uint8_t number,
 				uint32_t *attrs);
+int avrcp_change_path(struct avrcp *session, uint8_t direction, uint64_t uid,
+							uint16_t counter);
 
 int avrcp_get_capabilities_rsp(struct avrcp *session, uint8_t transaction,
 					uint8_t number, uint8_t *events);
-- 
2.47.3