1 /******************************************************************************
2 *
3 * Copyright (C) 2003-2016 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 #include <string.h>
19
20 #include "avrc_api.h"
21 #include "avrc_int.h"
22 #include "bt_common.h"
23
24 #if (AVRC_METADATA_INCLUDED == TRUE)
25
26 /**************************************************************************
27 *
28 * Function AVRC_IsValidAvcType
29 *
30 * Description Check if correct AVC type is specified
31 *
32 * Returns returns true if it is valid
33 *
34 *
35 ******************************************************************************/
AVRC_IsValidAvcType(uint8_t pdu_id,uint8_t avc_type)36 bool AVRC_IsValidAvcType(uint8_t pdu_id, uint8_t avc_type) {
37 bool result = false;
38
39 if (avc_type < AVRC_RSP_NOT_IMPL) /* command msg */
40 {
41 switch (pdu_id) {
42 case AVRC_PDU_GET_CAPABILITIES: /* 0x10 */
43 case AVRC_PDU_LIST_PLAYER_APP_ATTR: /* 0x11 */
44 case AVRC_PDU_LIST_PLAYER_APP_VALUES: /* 0x12 */
45 case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE: /* 0x13 */
46 case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT: /* 0x15 */
47 case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT: /* 0x16 */
48 case AVRC_PDU_GET_ELEMENT_ATTR: /* 0x20 */
49 case AVRC_PDU_GET_PLAY_STATUS: /* 0x30 */
50 if (avc_type == AVRC_CMD_STATUS) result = true;
51 break;
52
53 case AVRC_PDU_SET_PLAYER_APP_VALUE: /* 0x14 */
54 case AVRC_PDU_INFORM_DISPLAY_CHARSET: /* 0x17 */
55 case AVRC_PDU_INFORM_BATTERY_STAT_OF_CT: /* 0x18 */
56 case AVRC_PDU_REQUEST_CONTINUATION_RSP: /* 0x40 */
57 case AVRC_PDU_ABORT_CONTINUATION_RSP: /* 0x41 */
58 if (avc_type == AVRC_CMD_CTRL) result = true;
59 break;
60
61 case AVRC_PDU_GET_FOLDER_ITEMS: /* 0x71 */
62 result = true;
63 break;
64
65 case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */
66 case AVRC_PDU_SET_ADDRESSED_PLAYER: /* 0x60 */
67 case AVRC_PDU_PLAY_ITEM: /* 0x74 */
68 case AVRC_PDU_ADD_TO_NOW_PLAYING: /* 0x90 */
69 if (avc_type == AVRC_CMD_CTRL) result = true;
70 break;
71
72 case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
73 if (avc_type == AVRC_CMD_NOTIF) result = true;
74 break;
75 }
76 } else /* response msg */
77 {
78 if (avc_type >= AVRC_RSP_NOT_IMPL && avc_type <= AVRC_RSP_INTERIM)
79 result = true;
80 }
81
82 return result;
83 }
84
85 /*******************************************************************************
86 *
87 * Function avrc_is_valid_player_attrib_value
88 *
89 * Description Check if the given attrib value is valid for its attribute
90 *
91 * Returns returns true if it is valid
92 *
93 ******************************************************************************/
avrc_is_valid_player_attrib_value(uint8_t attrib,uint8_t value)94 bool avrc_is_valid_player_attrib_value(uint8_t attrib, uint8_t value) {
95 bool result = false;
96
97 switch (attrib) {
98 case AVRC_PLAYER_SETTING_EQUALIZER:
99 if ((value > 0) && (value <= AVRC_PLAYER_VAL_ON)) result = true;
100 break;
101
102 case AVRC_PLAYER_SETTING_REPEAT:
103 if ((value > 0) && (value <= AVRC_PLAYER_VAL_GROUP_REPEAT)) result = true;
104 break;
105
106 case AVRC_PLAYER_SETTING_SHUFFLE:
107 case AVRC_PLAYER_SETTING_SCAN:
108 if ((value > 0) && (value <= AVRC_PLAYER_VAL_GROUP_SHUFFLE))
109 result = true;
110 break;
111 }
112
113 if (attrib >= AVRC_PLAYER_SETTING_LOW_MENU_EXT) result = true;
114
115 if (!result) {
116 AVRC_TRACE_ERROR(" %s found not matching attrib(x%x)-value(x%x) pair!",
117 __func__, attrib, value);
118 }
119 return result;
120 }
121
122 /*******************************************************************************
123 *
124 * Function AVRC_IsValidPlayerAttr
125 *
126 * Description Check if the given attrib value is a valid one
127 *
128 * Returns returns true if it is valid
129 *
130 ******************************************************************************/
AVRC_IsValidPlayerAttr(uint8_t attr)131 bool AVRC_IsValidPlayerAttr(uint8_t attr) {
132 bool result = false;
133
134 if ((attr >= AVRC_PLAYER_SETTING_EQUALIZER &&
135 attr <= AVRC_PLAYER_SETTING_SCAN) ||
136 (attr >= AVRC_PLAYER_SETTING_LOW_MENU_EXT)) {
137 result = true;
138 }
139
140 return result;
141 }
142
143 /*******************************************************************************
144 *
145 * Function avrc_pars_pass_thru
146 *
147 * Description This function parses the pass thru commands defined by
148 * Bluetooth SIG
149 *
150 * Returns AVRC_STS_NO_ERROR, if the message in p_data is parsed
151 * successfully.
152 * Otherwise, the error code defined by AVRCP 1.4
153 *
154 ******************************************************************************/
avrc_pars_pass_thru(tAVRC_MSG_PASS * p_msg,uint16_t * p_vendor_unique_id)155 tAVRC_STS avrc_pars_pass_thru(tAVRC_MSG_PASS* p_msg,
156 uint16_t* p_vendor_unique_id) {
157 uint8_t* p_data;
158 uint32_t co_id;
159 uint16_t id;
160 tAVRC_STS status = AVRC_STS_BAD_CMD;
161
162 if (p_msg->op_id == AVRC_ID_VENDOR &&
163 p_msg->pass_len == AVRC_PASS_THRU_GROUP_LEN) {
164 p_data = p_msg->p_pass_data;
165 AVRC_BE_STREAM_TO_CO_ID(co_id, p_data);
166 if (co_id == AVRC_CO_METADATA) {
167 BE_STREAM_TO_UINT16(id, p_data);
168 if (AVRC_IS_VALID_GROUP(id)) {
169 *p_vendor_unique_id = id;
170 status = AVRC_STS_NO_ERROR;
171 }
172 }
173 }
174 return status;
175 }
176
177 /*******************************************************************************
178 *
179 * Function avrc_opcode_from_pdu
180 *
181 * Description This function returns the opcode of the given pdu
182 *
183 * Returns AVRC_OP_VENDOR, AVRC_OP_PASS_THRU or AVRC_OP_BROWSE
184 *
185 ******************************************************************************/
avrc_opcode_from_pdu(uint8_t pdu)186 uint8_t avrc_opcode_from_pdu(uint8_t pdu) {
187 uint8_t opcode = 0;
188
189 switch (pdu) {
190 case AVRC_PDU_SET_BROWSED_PLAYER:
191 case AVRC_PDU_GET_FOLDER_ITEMS:
192 case AVRC_PDU_CHANGE_PATH:
193 case AVRC_PDU_GET_ITEM_ATTRIBUTES:
194 case AVRC_PDU_SEARCH:
195 case AVRC_PDU_GENERAL_REJECT:
196 case AVRC_PDU_GET_TOTAL_NUM_OF_ITEMS:
197 opcode = AVRC_OP_BROWSE;
198 break;
199
200 case AVRC_PDU_NEXT_GROUP:
201 case AVRC_PDU_PREV_GROUP: /* pass thru */
202 opcode = AVRC_OP_PASS_THRU;
203 break;
204
205 default: /* vendor */
206 opcode = AVRC_OP_VENDOR;
207 break;
208 }
209
210 return opcode;
211 }
212
213 /*******************************************************************************
214 *
215 * Function avrc_is_valid_opcode
216 *
217 * Description This function returns the opcode of the given pdu
218 *
219 * Returns AVRC_OP_VENDOR, AVRC_OP_PASS_THRU or AVRC_OP_BROWSE
220 *
221 ******************************************************************************/
avrc_is_valid_opcode(uint8_t opcode)222 bool avrc_is_valid_opcode(uint8_t opcode) {
223 bool is_valid = false;
224 switch (opcode) {
225 case AVRC_OP_BROWSE:
226 case AVRC_OP_PASS_THRU:
227 case AVRC_OP_VENDOR:
228 is_valid = true;
229 break;
230 }
231 return is_valid;
232 }
233
234 #endif /* (AVRC_METADATA_INCLUDED == TRUE) */
235