From: Andrei Emeltchenko <[email protected]>
Implement avrcp_get_capabilities() request through
avrcp_send_vendordep_req(). avctp_send_req() is not exported so we use
the functions which are exported by AVCTP code.
---
android/avrcp-lib.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
android/avrcp.c | 1 +
2 files changed, 49 insertions(+)
diff --git a/android/avrcp-lib.c b/android/avrcp-lib.c
index 2e5a565..cf4cdaa 100644
--- a/android/avrcp-lib.c
+++ b/android/avrcp-lib.c
@@ -50,6 +50,18 @@
#define AVRCP_STATUS_NO_AVAILABLE_PLAYERS 0x15
#define AVRCP_STATUS_ADDRESSED_PLAYER_CHANGED 0x16
+/* Packet types */
+#define AVRCP_PACKET_TYPE_SINGLE 0x00
+#define AVRCP_PACKET_TYPE_START 0x01
+#define AVRCP_PACKET_TYPE_CONTINUING 0x02
+#define AVRCP_PACKET_TYPE_END 0x03
+
+/* Capabilities for AVRCP_GET_CAPABILITIES pdu */
+#define CAP_COMPANY_ID 0x02
+#define CAP_EVENTS_SUPPORTED 0x03
+
+#define AVRCP_GET_CAPABILITIES_PARAM_LENGTH 1
+
#if __BYTE_ORDER == __LITTLE_ENDIAN
struct avrcp_header {
@@ -92,6 +104,13 @@ static inline uint32_t ntoh24(const uint8_t src[3])
#error "Unknown byte order"
#endif
+static inline void hton24(uint8_t dst[3], uint32_t src)
+{
+ dst[0] = (src >> 16) & 0xff;
+ dst[1] = (src >> 8) & 0xff;
+ dst[2] = src & 0xff;
+}
+
struct avrcp {
struct avctp *conn;
@@ -255,3 +274,32 @@ int avrcp_init_uinput(struct avrcp *session, const char *name,
{
return avctp_init_uinput(session->conn, name, address);
}
+
+static int avrcp_send_vendordep_req(struct avrcp *session, uint8_t code,
+ uint8_t subunit, uint8_t *operands,
+ size_t operand_count,
+ avctp_rsp_cb func, void *user_data)
+{
+ return avctp_send_vendordep_req(session->conn, code, subunit, operands,
+ operand_count, func, user_data);
+}
+
+void avrcp_get_capabilities(struct avrcp *session, avctp_rsp_cb func)
+{
+ uint8_t buf[AVRCP_HEADER_LENGTH + AVRCP_GET_CAPABILITIES_PARAM_LENGTH];
+ struct avrcp_header *pdu = (void *) buf;
+ uint8_t length;
+
+ memset(buf, 0, sizeof(buf));
+
+ hton24(pdu->company_id, IEEEID_BTSIG);
+ pdu->pdu_id = AVRCP_GET_CAPABILITIES;
+ pdu->packet_type = AVRCP_PACKET_TYPE_SINGLE;
+ pdu->params[0] = CAP_EVENTS_SUPPORTED;
+ pdu->params_len = htons(AVRCP_GET_CAPABILITIES_PARAM_LENGTH);
+
+ length = AVRCP_HEADER_LENGTH + ntohs(pdu->params_len);
+
+ avrcp_send_vendordep_req(session, AVC_CTYPE_STATUS, AVC_SUBUNIT_PANEL,
+ buf, length, func, session);
+}
diff --git a/android/avrcp.c b/android/avrcp.c
index 48444a4..3d39d91 100644
--- a/android/avrcp.c
+++ b/android/avrcp.c
@@ -36,6 +36,7 @@
#include "bluetooth.h"
#include "hal-msg.h"
#include "ipc.h"
+#include "avctp.h"
#include "avrcp-lib.h"
#include "avrcp.h"
--
1.8.3.2