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 * Interface 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 #if AVRC_METADATA_INCLUDED == TRUE
57 WC_ASSERT(AVRC_META_CMD_POOL_SIZE > (AVRC_MIN_CMD_LEN+p_msg->vendor_len));
58 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_META_CMD_POOL_ID)) != NULL)
59 #else
60 WC_ASSERT(AVRC_CMD_POOL_SIZE > (AVRC_MIN_CMD_LEN+p_msg->vendor_len));
61 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL)
62 #endif
63 {
64 p_cmd->offset = AVCT_MSG_OFFSET;
65 p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
66 *p_data++ = (p_msg->hdr.ctype & AVRC_CTYPE_MASK);
67 *p_data++ = (p_msg->hdr.subunit_type << AVRC_SUBTYPE_SHIFT) | p_msg->hdr.subunit_id;
68 *p_data++ = AVRC_OP_VENDOR;
69 AVRC_CO_ID_TO_BE_STREAM(p_data, p_msg->company_id);
70 if(p_msg->vendor_len && p_msg->p_vendor_data)
71 {
72 memcpy(p_data, p_msg->p_vendor_data, p_msg->vendor_len);
73 }
74 p_cmd->len = (UINT16) (p_data + p_msg->vendor_len - (UINT8 *)(p_cmd + 1) - p_cmd->offset);
75 p_cmd->layer_specific = AVCT_DATA_CTRL;
76 }
77 return p_cmd;
78 }
79
80 /******************************************************************************
81 **
82 ** Function AVRC_UnitCmd
83 **
84 ** Description Send a UNIT INFO command to the peer device. This
85 ** function can only be called for controller role connections.
86 ** Any response message from the peer is passed back through
87 ** the tAVRC_MSG_CBACK callback function.
88 **
89 ** Input Parameters:
90 ** handle: Handle of this connection.
91 **
92 ** label: Transaction label.
93 **
94 ** Output Parameters:
95 ** None.
96 **
97 ** Returns AVRC_SUCCESS if successful.
98 ** AVRC_BAD_HANDLE if handle is invalid.
99 **
100 ******************************************************************************/
AVRC_UnitCmd(UINT8 handle,UINT8 label)101 UINT16 AVRC_UnitCmd(UINT8 handle, UINT8 label)
102 {
103 BT_HDR *p_cmd;
104 UINT8 *p_data;
105
106 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL)
107 {
108 p_cmd->offset = AVCT_MSG_OFFSET;
109 p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
110 *p_data++ = AVRC_CMD_STATUS;
111 /* unit & id ignore */
112 *p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
113 *p_data++ = AVRC_OP_UNIT_INFO;
114 memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_UNIT_OPRND_BYTES);
115 p_cmd->len = p_data + AVRC_UNIT_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
116 p_cmd->layer_specific = AVCT_DATA_CTRL;
117 }
118 return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
119 }
120
121 /******************************************************************************
122 **
123 ** Function AVRC_SubCmd
124 **
125 ** Description Send a SUBUNIT INFO command to the peer device. This
126 ** function can only be called for controller role connections.
127 ** Any response message from the peer is passed back through
128 ** the tAVRC_MSG_CBACK callback function.
129 **
130 ** Input Parameters:
131 ** handle: Handle of this connection.
132 **
133 ** label: Transaction label.
134 **
135 ** page: Specifies which part of the subunit type table
136 ** is requested. For AVRCP it is typically zero.
137 ** Value range is 0-7.
138 **
139 ** Output Parameters:
140 ** None.
141 **
142 ** Returns AVRC_SUCCESS if successful.
143 ** AVRC_BAD_HANDLE if handle is invalid.
144 **
145 ******************************************************************************/
AVRC_SubCmd(UINT8 handle,UINT8 label,UINT8 page)146 UINT16 AVRC_SubCmd(UINT8 handle, UINT8 label, UINT8 page)
147 {
148 BT_HDR *p_cmd;
149 UINT8 *p_data;
150
151 if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL)
152 {
153 p_cmd->offset = AVCT_MSG_OFFSET;
154 p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
155 *p_data++ = AVRC_CMD_STATUS;
156 /* unit & id ignore */
157 *p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
158 *p_data++ = AVRC_OP_SUB_INFO;
159 *p_data++ = ((page&AVRC_SUB_PAGE_MASK) << AVRC_SUB_PAGE_SHIFT) | AVRC_SUB_EXT_CODE;
160 memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_SUB_OPRND_BYTES);
161 p_cmd->len = p_data + AVRC_SUB_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
162 p_cmd->layer_specific = AVCT_DATA_CTRL;
163 }
164 return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
165 }
166
167 /******************************************************************************
168 **
169 ** Function AVRC_VendorCmd
170 **
171 ** Description Send a VENDOR DEPENDENT command to the peer device. This
172 ** function can only be called for controller role connections.
173 ** Any response message from the peer is passed back through
174 ** the tAVRC_MSG_CBACK callback function.
175 **
176 ** Input Parameters:
177 ** handle: Handle of this connection.
178 **
179 ** label: Transaction label.
180 **
181 ** p_msg: Pointer to VENDOR DEPENDENT message structure.
182 **
183 ** Output Parameters:
184 ** None.
185 **
186 ** Returns AVRC_SUCCESS if successful.
187 ** AVRC_BAD_HANDLE if handle is invalid.
188 **
189 ******************************************************************************/
AVRC_VendorCmd(UINT8 handle,UINT8 label,tAVRC_MSG_VENDOR * p_msg)190 UINT16 AVRC_VendorCmd(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
191 {
192 BT_HDR *p_buf = avrc_vendor_msg(p_msg);
193 if (p_buf)
194 return AVCT_MsgReq( handle, label, AVCT_CMD, p_buf);
195 else
196 return AVCT_NO_RESOURCES;
197 }
198
199
200 /******************************************************************************
201 **
202 ** Function AVRC_VendorRsp
203 **
204 ** Description Send a VENDOR DEPENDENT response to the peer device. This
205 ** function can only be called for target role connections.
206 ** This function must be called when a VENDOR DEPENDENT
207 ** command message is received from the peer through the
208 ** tAVRC_MSG_CBACK callback function.
209 **
210 ** Input Parameters:
211 ** handle: Handle of this connection.
212 **
213 ** label: Transaction label. Must be the same value as
214 ** passed with the command message in the callback function.
215 **
216 ** p_msg: Pointer to VENDOR DEPENDENT message structure.
217 **
218 ** Output Parameters:
219 ** None.
220 **
221 ** Returns AVRC_SUCCESS if successful.
222 ** AVRC_BAD_HANDLE if handle is invalid.
223 **
224 ******************************************************************************/
AVRC_VendorRsp(UINT8 handle,UINT8 label,tAVRC_MSG_VENDOR * p_msg)225 UINT16 AVRC_VendorRsp(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
226 {
227 BT_HDR *p_buf = avrc_vendor_msg(p_msg);
228 if (p_buf)
229 return AVCT_MsgReq( handle, label, AVCT_RSP, p_buf);
230 else
231 return AVCT_NO_RESOURCES;
232 }
233
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236