Return-Path: From: Andrei Emeltchenko To: linux-bluetooth@vger.kernel.org Subject: [PATCHv2] android/avrcp: Add avrcp_get_capabilities request Date: Wed, 26 Feb 2014 16:32:14 +0200 Message-Id: <1393425134-12702-1-git-send-email-Andrei.Emeltchenko.news@gmail.com> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Andrei Emeltchenko 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-lib.h | 2 ++ android/avrcp.c | 1 + 3 files changed, 51 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-lib.h b/android/avrcp-lib.h index 2337429..4f3a632 100644 --- a/android/avrcp-lib.h +++ b/android/avrcp-lib.h @@ -74,3 +74,5 @@ void avrcp_set_passthrough_handlers(struct avrcp *session, void *user_data); int avrcp_init_uinput(struct avrcp *session, const char *name, const char *address); + +void avrcp_get_capabilities(struct avrcp *session, avctp_rsp_cb func); 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