1 /******************************************************************************
2 *
3 * Copyright (C) 2003-2012 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * nterface to AVRCP optional commands
22 *
23 ******************************************************************************/
24 #include <string.h>
25
26 #include "gki.h"
27 #include "avrc_api.h"
28 #include "avrc_int.h"
29
30 #include "wcassert.h"
31
32
33 /******************************************************************************
34 **
35 ** Function avrc_vendor_msg
36 **
37 ** Description Compose a VENDOR DEPENDENT command according to p_msg
38 **
39 ** Input Parameters:
40 ** p_msg: Pointer to VENDOR DEPENDENT message structure.
41 **
42 ** Output Parameters:
43 ** None.
44 **
45 ** Returns pointer to a valid GKI buffer if successful.
46 ** NULL if p_msg is NULL.
47 **
48 ******************************************************************************/
avrc_vendor_msg(tAVRC_MSG_VENDOR * p_msg)49 static BT_HDR * avrc_vendor_msg(tAVRC_MSG_VENDOR *p_msg)
50 {
51 BT_HDR *p_cmd;
52 UINT8 *p_data;
53
54 WC_ASSERT(p_msg != NULL);
55
56 WC_ASSERT(AVRC_CMD_POOL_SIZE > (AVRC_MIN_CMD_LEN+p_msg->vendor_len));
57 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL)
58 {
59 p_cmd->offset = AVCT_MSG_OFFSET;
60 p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
61 *p_data++ = (p_msg->hdr.ctype & AVRC_CTYPE_MASK);
62 *p_data++ = (p_msg->hdr.subunit_type << AVRC_SUBTYPE_SHIFT) | p_msg->hdr.subunit_id;
63 *p_data++ = AVRC_OP_VENDOR;
64 AVRC_CO_ID_TO_BE_STREAM(p_data, p_msg->company_id);
65 if(p_msg->vendor_len && p_msg->p_vendor_data)
66 {
67 memcpy(p_data, p_msg->p_vendor_data, p_msg->vendor_len);
68 }
69 p_cmd->len = (UINT16) (p_data + p_msg->vendor_len - (UINT8 *)(p_cmd + 1) - p_cmd->offset);
70 p_cmd->layer_specific = AVCT_DATA_CTRL;
71 }
72 return p_cmd;
73 }
74
75 /******************************************************************************
76 **
77 ** Function AVRC_UnitCmd
78 **
79 ** Description Send a UNIT INFO command to the peer device. This
80 ** function can only be called for controller role connections.
81 ** Any response message from the peer is passed back through
82 ** the tAVRC_MSG_CBACK callback function.
83 **
84 ** Input Parameters:
85 ** handle: Handle of this connection.
86 **
87 ** label: Transaction label.
88 **
89 ** Output Parameters:
90 ** None.
91 **
92 ** Returns AVRC_SUCCESS if successful.
93 ** AVRC_BAD_HANDLE if handle is invalid.
94 **
95 ******************************************************************************/
AVRC_UnitCmd(UINT8 handle,UINT8 label)96 UINT16 AVRC_UnitCmd(UINT8 handle, UINT8 label)
97 {
98 BT_HDR *p_cmd;
99 UINT8 *p_data;
100
101 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL)
102 {
103 p_cmd->offset = AVCT_MSG_OFFSET;
104 p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
105 *p_data++ = AVRC_CMD_STATUS;
106 /* unit & id ignore */
107 *p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
108 *p_data++ = AVRC_OP_UNIT_INFO;
109 memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_UNIT_OPRND_BYTES);
110 p_cmd->len = p_data + AVRC_UNIT_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
111 p_cmd->layer_specific = AVCT_DATA_CTRL;
112 }
113 return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
114 }
115
116 /******************************************************************************
117 **
118 ** Function AVRC_SubCmd
119 **
120 ** Description Send a SUBUNIT INFO command to the peer device. This
121 ** function can only be called for controller role connections.
122 ** Any response message from the peer is passed back through
123 ** the tAVRC_MSG_CBACK callback function.
124 **
125 ** Input Parameters:
126 ** handle: Handle of this connection.
127 **
128 ** label: Transaction label.
129 **
130 ** page: Specifies which part of the subunit type table
131 ** is requested. For AVRCP it is typically zero.
132 ** Value range is 0-7.
133 **
134 ** Output Parameters:
135 ** None.
136 **
137 ** Returns AVRC_SUCCESS if successful.
138 ** AVRC_BAD_HANDLE if handle is invalid.
139 **
140 ******************************************************************************/
AVRC_SubCmd(UINT8 handle,UINT8 label,UINT8 page)141 UINT16 AVRC_SubCmd(UINT8 handle, UINT8 label, UINT8 page)
142 {
143 BT_HDR *p_cmd;
144 UINT8 *p_data;
145
146 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL)
147 {
148 p_cmd->offset = AVCT_MSG_OFFSET;
149 p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
150 *p_data++ = AVRC_CMD_STATUS;
151 /* unit & id ignore */
152 *p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
153 *p_data++ = AVRC_OP_SUB_INFO;
154 *p_data++ = ((page&AVRC_SUB_PAGE_MASK) << AVRC_SUB_PAGE_SHIFT) | AVRC_SUB_EXT_CODE;
155 memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_SUB_OPRND_BYTES);
156 p_cmd->len = p_data + AVRC_SUB_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
157 p_cmd->layer_specific = AVCT_DATA_CTRL;
158 }
159 return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
160 }
161
162 /******************************************************************************
163 **
164 ** Function AVRC_VendorCmd
165 **
166 ** Description Send a VENDOR DEPENDENT command to the peer device. This
167 ** function can only be called for controller role connections.
168 ** Any response message from the peer is passed back through
169 ** the tAVRC_MSG_CBACK callback function.
170 **
171 ** Input Parameters:
172 ** handle: Handle of this connection.
173 **
174 ** label: Transaction label.
175 **
176 ** p_msg: Pointer to VENDOR DEPENDENT message structure.
177 **
178 ** Output Parameters:
179 ** None.
180 **
181 ** Returns AVRC_SUCCESS if successful.
182 ** AVRC_BAD_HANDLE if handle is invalid.
183 **
184 ******************************************************************************/
AVRC_VendorCmd(UINT8 handle,UINT8 label,tAVRC_MSG_VENDOR * p_msg)185 UINT16 AVRC_VendorCmd(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
186 {
187 BT_HDR *p_buf = avrc_vendor_msg(p_msg);
188 if (p_buf)
189 return AVCT_MsgReq( handle, label, AVCT_CMD, p_buf);
190 else
191 return AVCT_NO_RESOURCES;
192 }
193
194
195 /******************************************************************************
196 **
197 ** Function AVRC_VendorRsp
198 **
199 ** Description Send a VENDOR DEPENDENT response to the peer device. This
200 ** function can only be called for target role connections.
201 ** This function must be called when a VENDOR DEPENDENT
202 ** command message is received from the peer through the
203 ** tAVRC_MSG_CBACK callback function.
204 **
205 ** Input Parameters:
206 ** handle: Handle of this connection.
207 **
208 ** label: Transaction label. Must be the same value as
209 ** passed with the command message in the callback function.
210 **
211 ** p_msg: Pointer to VENDOR DEPENDENT message structure.
212 **
213 ** Output Parameters:
214 ** None.
215 **
216 ** Returns AVRC_SUCCESS if successful.
217 ** AVRC_BAD_HANDLE if handle is invalid.
218 **
219 ******************************************************************************/
AVRC_VendorRsp(UINT8 handle,UINT8 label,tAVRC_MSG_VENDOR * p_msg)220 UINT16 AVRC_VendorRsp(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
221 {
222 BT_HDR *p_buf = avrc_vendor_msg(p_msg);
223 if (p_buf)
224 return AVCT_MsgReq( handle, label, AVCT_RSP, p_buf);
225 else
226 return AVCT_NO_RESOURCES;
227 }
228
229
230
231