1 /******************************************************************************
2 *
3 * Copyright (C) 2003-2013 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 * AVRCP SDP related functions
22 *
23 ******************************************************************************/
24 #include <string.h>
25
26 #include "gki.h"
27 #include "avrc_api.h"
28 #include "avrc_int.h"
29
30 #ifndef SDP_AVRCP_1_4
31 #define SDP_AVRCP_1_4 FALSE
32 #endif
33
34 /*****************************************************************************
35 ** Global data
36 *****************************************************************************/
37 #if AVRC_DYNAMIC_MEMORY == FALSE
38 tAVRC_CB avrc_cb;
39 #endif
40
41 /* update AVRC_NUM_PROTO_ELEMS if this constant is changed */
42 const tSDP_PROTOCOL_ELEM avrc_proto_list [] =
43 {
44 {UUID_PROTOCOL_L2CAP, 1, {AVCT_PSM, 0} },
45 #if SDP_AVRCP_1_4 == TRUE
46 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_3, 0} }
47 #else
48 #if AVRC_METADATA_INCLUDED == TRUE
49 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_2, 0} }
50 #else
51 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_0, 0} }
52 #endif
53 #endif
54 };
55
56 #if SDP_AVRCP_1_4 == TRUE
57 const tSDP_PROTO_LIST_ELEM avrc_add_proto_list [] =
58 {
59 {AVRC_NUM_PROTO_ELEMS,
60 {
61 {UUID_PROTOCOL_L2CAP, 1, {AVCT_BR_PSM, 0} },
62 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_3, 0} }}}
63 };
64 #endif
65
66
67 /******************************************************************************
68 **
69 ** Function avrc_sdp_cback
70 **
71 ** Description This is the SDP callback function used by A2D_FindService.
72 ** This function will be executed by SDP when the service
73 ** search is completed. If the search is successful, it
74 ** finds the first record in the database that matches the
75 ** UUID of the search. Then retrieves various parameters
76 ** from the record. When it is finished it calls the
77 ** application callback function.
78 **
79 ** Returns Nothing.
80 **
81 ******************************************************************************/
avrc_sdp_cback(UINT16 status)82 static void avrc_sdp_cback(UINT16 status)
83 {
84 AVRC_TRACE_API1("avrc_sdp_cback status: %d", status);
85
86 /* reset service_uuid, so can start another find service */
87 avrc_cb.service_uuid = 0;
88
89 /* return info from sdp record in app callback function */
90 (*avrc_cb.p_cback) (status);
91
92 return;
93 }
94
95 /******************************************************************************
96 **
97 ** Function AVRC_FindService
98 **
99 ** Description This function is called by the application to perform service
100 ** discovery and retrieve AVRCP SDP record information from a
101 ** peer device. Information is returned for the first service
102 ** record found on the server that matches the service UUID.
103 ** The callback function will be executed when service discovery
104 ** is complete. There can only be one outstanding call to
105 ** AVRC_FindService() at a time; the application must wait for
106 ** the callback before it makes another call to the function.
107 ** The application is responsible for allocating memory for the
108 ** discovery database. It is recommended that the size of the
109 ** discovery database be at least 300 bytes. The application
110 ** can deallocate the memory after the callback function has
111 ** executed.
112 **
113 ** Input Parameters:
114 ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
115 ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
116 **
117 ** bd_addr: BD address of the peer device.
118 **
119 ** p_db: SDP discovery database parameters.
120 **
121 ** p_cback: Pointer to the callback function.
122 **
123 ** Output Parameters:
124 ** None.
125 **
126 ** Returns AVRC_SUCCESS if successful.
127 ** AVRC_BAD_PARAMS if discovery database parameters are invalid.
128 ** AVRC_NO_RESOURCES if there are not enough resources to
129 ** perform the service search.
130 **
131 ******************************************************************************/
AVRC_FindService(UINT16 service_uuid,BD_ADDR bd_addr,tAVRC_SDP_DB_PARAMS * p_db,tAVRC_FIND_CBACK * p_cback)132 UINT16 AVRC_FindService(UINT16 service_uuid, BD_ADDR bd_addr,
133 tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback)
134 {
135 tSDP_UUID uuid_list;
136 BOOLEAN result = TRUE;
137 UINT16 a2d_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */
138 ATTR_ID_PROTOCOL_DESC_LIST,
139 ATTR_ID_BT_PROFILE_DESC_LIST,
140 ATTR_ID_SERVICE_NAME,
141 ATTR_ID_SUPPORTED_FEATURES,
142 ATTR_ID_PROVIDER_NAME};
143
144 AVRC_TRACE_API1("AVRC_FindService uuid: %x", service_uuid);
145 if( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) ||
146 p_db == NULL || p_db->p_db == NULL || p_cback == NULL)
147 return AVRC_BAD_PARAM;
148
149 /* check if it is busy */
150 if( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET ||
151 avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL)
152 return AVRC_NO_RESOURCES;
153
154 /* set up discovery database */
155 uuid_list.len = LEN_UUID_16;
156 uuid_list.uu.uuid16 = service_uuid;
157
158 if(p_db->p_attrs == NULL || p_db->num_attr == 0)
159 {
160 p_db->p_attrs = a2d_attr_list;
161 p_db->num_attr = AVRC_NUM_ATTR;
162 }
163
164 result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr,
165 p_db->p_attrs);
166
167 if (result == TRUE)
168 {
169 /* store service_uuid and discovery db pointer */
170 avrc_cb.p_db = p_db->p_db;
171 avrc_cb.service_uuid = service_uuid;
172 avrc_cb.p_cback = p_cback;
173
174 /* perform service search */
175 result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback);
176 }
177
178 return (result ? AVRC_SUCCESS : AVRC_FAIL);
179 }
180
181 /******************************************************************************
182 **
183 ** Function AVRC_AddRecord
184 **
185 ** Description This function is called to build an AVRCP SDP record.
186 ** Prior to calling this function the application must
187 ** call SDP_CreateRecord() to create an SDP record.
188 **
189 ** Input Parameters:
190 ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
191 ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
192 **
193 ** p_service_name: Pointer to a null-terminated character
194 ** string containing the service name.
195 ** If service name is not used set this to NULL.
196 **
197 ** p_provider_name: Pointer to a null-terminated character
198 ** string containing the provider name.
199 ** If provider name is not used set this to NULL.
200 **
201 ** categories: Supported categories.
202 **
203 ** sdp_handle: SDP handle returned by SDP_CreateRecord().
204 **
205 ** Output Parameters:
206 ** None.
207 **
208 ** Returns AVRC_SUCCESS if successful.
209 ** AVRC_NO_RESOURCES if not enough resources to build the SDP record.
210 **
211 ******************************************************************************/
AVRC_AddRecord(UINT16 service_uuid,char * p_service_name,char * p_provider_name,UINT16 categories,UINT32 sdp_handle)212 UINT16 AVRC_AddRecord(UINT16 service_uuid, char *p_service_name,
213 char *p_provider_name, UINT16 categories, UINT32 sdp_handle)
214 {
215 UINT16 browse_list[1];
216 BOOLEAN result = TRUE;
217 UINT8 temp[8];
218 UINT8 *p;
219 UINT16 count = 1;
220 UINT16 class_list[2];
221
222
223 AVRC_TRACE_API1("AVRC_AddRecord uuid: %x", service_uuid);
224
225 if( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL )
226 return AVRC_BAD_PARAM;
227
228 /* add service class id list */
229 class_list[0] = service_uuid;
230 #if SDP_AVRCP_1_4 == TRUE
231 if( service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL )
232 {
233 class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL;
234 count = 2;
235 }
236 #endif
237 result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list);
238
239 /* add protocol descriptor list */
240 result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, (tSDP_PROTOCOL_ELEM *)avrc_proto_list);
241
242 /* add profile descriptor list */
243 #if SDP_AVRCP_1_4 == TRUE
244 /* additional protocol list to include browsing channel */
245 result &= SDP_AddAdditionProtoLists( sdp_handle, 1, (tSDP_PROTO_LIST_ELEM *)avrc_add_proto_list);
246
247 result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_4);
248 #else
249 #if AVRC_METADATA_INCLUDED == TRUE
250 result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_3);
251 #else
252 result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_0);
253 #endif
254 #endif
255
256 /* add supported categories */
257 p = temp;
258 UINT16_TO_BE_STREAM(p, categories);
259 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE,
260 (UINT32)2, (UINT8*)temp);
261
262 /* add provider name */
263 if (p_provider_name != NULL)
264 {
265 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE,
266 (UINT32)(strlen(p_provider_name)+1), (UINT8 *) p_provider_name);
267 }
268
269 /* add service name */
270 if (p_service_name != NULL)
271 {
272 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
273 (UINT32)(strlen(p_service_name)+1), (UINT8 *) p_service_name);
274 }
275
276 /* add browse group list */
277 browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP;
278 result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list);
279
280
281 return (result ? AVRC_SUCCESS : AVRC_FAIL);
282 }
283
284
285
286 /******************************************************************************
287 **
288 ** Function AVRC_SetTraceLevel
289 **
290 ** Description Sets the trace level for AVRC. If 0xff is passed, the
291 ** current trace level is returned.
292 **
293 ** Input Parameters:
294 ** new_level: The level to set the AVRC tracing to:
295 ** 0xff-returns the current setting.
296 ** 0-turns off tracing.
297 ** >= 1-Errors.
298 ** >= 2-Warnings.
299 ** >= 3-APIs.
300 ** >= 4-Events.
301 ** >= 5-Debug.
302 **
303 ** Returns The new trace level or current trace level if
304 ** the input parameter is 0xff.
305 **
306 ******************************************************************************/
AVRC_SetTraceLevel(UINT8 new_level)307 UINT8 AVRC_SetTraceLevel (UINT8 new_level)
308 {
309 if (new_level != 0xFF)
310 avrc_cb.trace_level = new_level;
311
312 return (avrc_cb.trace_level);
313 }
314
315 /*******************************************************************************
316 **
317 ** Function AVRC_Init
318 **
319 ** Description This function is called at stack startup to allocate the
320 ** control block (if using dynamic memory), and initializes the
321 ** control block and tracing level.
322 **
323 ** Returns void
324 **
325 *******************************************************************************/
AVRC_Init(void)326 void AVRC_Init(void)
327 {
328 memset(&avrc_cb, 0, sizeof(tAVRC_CB));
329
330 #if defined(AVRC_INITIAL_TRACE_LEVEL)
331 avrc_cb.trace_level = AVRC_INITIAL_TRACE_LEVEL;
332 #else
333 avrc_cb.trace_level = BT_TRACE_LEVEL_NONE;
334 #endif
335 }
336
337