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