1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "avrcp_browsing_client.c" 39 40 /* 41 * avrcp_browsing_client.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(avrcp_browsing_client): Browse media players and media information on a remote device. 46 * 47 * @text This example demonstrates how to use the AVRCP Controller Browsing service to 48 * browse madia players and media information on a remote AVRCP Source device. 49 * 50 * @test To test with a remote device, e.g. a mobile phone, 51 * pair from the remote device with the demo, then use the UI for browsing (tap 52 * SPACE on the console to show the available AVRCP commands). 53 * 54 */ 55 // ***************************************************************************** 56 57 #include <stdint.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 62 #include "btstack.h" 63 #include "avrcp_browsing_controller.h" 64 65 #ifdef HAVE_BTSTACK_STDIN 66 #include "btstack_stdin.h" 67 #endif 68 69 #ifdef HAVE_BTSTACK_STDIN 70 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 71 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 72 // mac 2013: 73 // static const char * device_addr_string = "84:38:35:65:d1:15"; 74 // iPhone 5S: static const char * device_addr_string = "54:E4:3A:26:A2:39"; 75 // phone 2013: 76 static const char * device_addr_string = "D8:BB:2C:DF:F1:08"; 77 static bd_addr_t device_addr; 78 #endif 79 80 static uint16_t avrcp_cid = 0; 81 static uint8_t avrcp_connected = 0; 82 83 static uint16_t browsing_cid = 0; 84 static uint8_t avrcp_browsing_connected = 0; 85 static uint8_t sdp_avrcp_browsing_controller_service_buffer[200]; 86 87 static btstack_packet_callback_registration_t hci_event_callback_registration; 88 89 static uint8_t ertm_buffer[10000]; 90 static l2cap_ertm_config_t ertm_config = { 91 1, // ertm mandatory 92 2, // max transmit, some tests require > 1 93 2000, 94 12000, 95 144, // l2cap ertm mtu 96 4, 97 4, 98 }; 99 100 101 /* @section Main Application Setup 102 * 103 * @text The Listing MainConfiguration shows how to setup AVRCP Controller Browsing service. 104 * To announce AVRCP Controller Browsing service, you need to create corresponding 105 * SDP record and register it with the SDP service. 106 * You'll also need to register several packet handlers: 107 * - stdin_process callback - used to trigger AVRCP commands, such are get media players, playlists, albums, etc. Requires HAVE_BTSTACK_STDIN. 108 * - avrcp_browsing_controller_packet_handler - used to receive answers for AVRCP commands. 109 * 110 */ 111 112 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP Controller services */ 113 static void avrcp_browsing_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 114 #ifdef HAVE_BTSTACK_STDIN 115 static void stdin_process(char cmd); 116 #endif 117 118 #define BROWSING_ENABLED 1 119 120 int btstack_main(int argc, const char * argv[]); 121 int btstack_main(int argc, const char * argv[]){ 122 (void)argc; 123 (void)argv; 124 125 // Register for HCI events. 126 hci_event_callback_registration.callback = &avrcp_browsing_controller_packet_handler; 127 hci_add_event_handler(&hci_event_callback_registration); 128 129 // Initialize L2CAP. 130 l2cap_init(); 131 132 // Initialize AVRCP Controller. 133 avrcp_controller_init(); 134 // Register AVRCP for HCI events. 135 avrcp_controller_register_packet_handler(&avrcp_browsing_controller_packet_handler); 136 137 // Initialize AVRCP Browsing Controller, HCI events will be sent to the AVRCP Controller callback. 138 avrcp_browsing_controller_init(); 139 140 // Initialize SDP. 141 sdp_init(); 142 143 // Create AVRCP service record and register it with SDP. 144 memset(sdp_avrcp_browsing_controller_service_buffer, 0, sizeof(sdp_avrcp_browsing_controller_service_buffer)); 145 avrcp_controller_create_sdp_record(sdp_avrcp_browsing_controller_service_buffer, 0x10001, BROWSING_ENABLED, 1, NULL, NULL); 146 sdp_register_service(sdp_avrcp_browsing_controller_service_buffer); 147 148 // Set local name with a template Bluetooth address, that will be automatically 149 // replaced with a actual address once it is available, i.e. when BTstack boots 150 // up and starts talking to a Bluetooth module. 151 gap_set_local_name("AVRCP Browsing Client 00:00:00:00:00:00"); 152 gap_discoverable_control(1); 153 gap_set_class_of_device(0x200408); 154 155 #ifdef HAVE_BTSTACK_STDIN 156 // Parse human readable Bluetooth address. 157 sscanf_bd_addr(device_addr_string, device_addr); 158 btstack_stdin_setup(stdin_process); 159 #endif 160 printf("Starting BTstack ...\n"); 161 hci_power_control(HCI_POWER_ON); 162 return 0; 163 } 164 /* LISTING_END */ 165 166 167 static void avrcp_browsing_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 168 UNUSED(channel); 169 UNUSED(size); 170 if (packet_type != HCI_EVENT_PACKET) return; 171 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 172 173 uint16_t local_cid; 174 uint8_t status = 0xFF; 175 bd_addr_t adress; 176 177 switch (packet[2]){ 178 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 179 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 180 if (browsing_cid != 0 && browsing_cid != local_cid) { 181 printf("AVRCP Browsing Client: AVRCP Controller connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", browsing_cid, local_cid); 182 return; 183 } 184 185 status = avrcp_subevent_connection_established_get_status(packet); 186 if (status != ERROR_CODE_SUCCESS){ 187 printf("AVRCP Browsing Client: AVRCP Controller connection failed: status 0x%02x\n", status); 188 browsing_cid = 0; 189 return; 190 } 191 192 avrcp_cid = local_cid; 193 avrcp_connected = 1; 194 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 195 printf("AVRCP Browsing Client: AVRCP Controller Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 196 return; 197 } 198 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 199 printf("AVRCP Browsing Client: AVRCP Controller Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 200 browsing_cid = 0; 201 avrcp_browsing_connected = 0; 202 return; 203 204 case AVRCP_SUBEVENT_BROWSING_CONNECTION_ESTABLISHED: { 205 local_cid = avrcp_subevent_browsing_connection_established_get_browsing_cid(packet); 206 if (browsing_cid != 0 && browsing_cid != local_cid) { 207 printf("AVRCP Browsing Client: AVRCP Browsing Controller Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", browsing_cid, local_cid); 208 return; 209 } 210 211 status = avrcp_subevent_browsing_connection_established_get_status(packet); 212 if (status != ERROR_CODE_SUCCESS){ 213 printf("AVRCP Browsing Client: AVRCP Browsing Controller Connection failed: status 0x%02x\n", status); 214 browsing_cid = 0; 215 return; 216 } 217 218 browsing_cid = local_cid; 219 avrcp_browsing_connected = 1; 220 avrcp_subevent_browsing_connection_established_get_bd_addr(packet, adress); 221 printf("AVRCP Browsing Client: AVRCP Browsing Controller Channel successfully opened: %s, browsing_cid 0x%02x\n", bd_addr_to_str(adress), browsing_cid); 222 return; 223 } 224 case AVRCP_SUBEVENT_BROWSING_CONNECTION_RELEASED: 225 printf("AVRCP Browsing Client: AVRCP Browsing Controller Channel released: browsing_cid 0x%02x\n", avrcp_subevent_browsing_connection_released_get_browsing_cid(packet)); 226 browsing_cid = 0; 227 avrcp_browsing_connected = 0; 228 return; 229 default: 230 printf("AVRCP Browsing Client: event is not parsed\n"); 231 break; 232 } 233 } 234 235 #ifdef HAVE_BTSTACK_STDIN 236 static void show_usage(void){ 237 bd_addr_t iut_address; 238 gap_local_bd_addr(iut_address); 239 printf("\n--- Bluetooth AVRCP Controller Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 240 printf("a - AVRCP Controller create connection to addr %s\n", bd_addr_to_str(device_addr)); 241 printf("c - AVRCP Browsing Controller create connection to addr %s\n", bd_addr_to_str(device_addr)); 242 printf("C - AVRCP Browsing Controller disconnect\n"); 243 printf("A - AVRCP Controller disconnect\n"); 244 printf("---\n"); 245 } 246 #endif 247 248 #ifdef HAVE_BTSTACK_STDIN 249 static void stdin_process(char cmd){ 250 uint8_t status = ERROR_CODE_SUCCESS; 251 252 switch (cmd){ 253 case 'a': 254 printf(" - Create AVRCP connection for control to addr %s.\n", bd_addr_to_str(device_addr)); 255 status = avrcp_controller_connect(device_addr, &avrcp_cid); 256 break; 257 case 'A': 258 if (avrcp_connected){ 259 printf(" - AVRCP Controller disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 260 status = avrcp_controller_disconnect(avrcp_cid); 261 break; 262 } 263 printf("AVRCP Controller already disconnected\n"); 264 break; 265 266 case 'c': 267 if (!avrcp_connected) { 268 printf(" You must first create AVRCP connection for control to addr %s.\n", bd_addr_to_str(device_addr)); 269 break; 270 } 271 printf(" - Create AVRCP connection for browsing to addr %s.\n", bd_addr_to_str(device_addr)); 272 status = avrcp_browsing_controller_connect(device_addr, ertm_buffer, sizeof(ertm_buffer), &ertm_config, &browsing_cid); 273 break; 274 case 'C': 275 if (avrcp_browsing_connected){ 276 printf(" - AVRCP Browsing Controller disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 277 status = avrcp_browsing_controller_disconnect(browsing_cid); 278 break; 279 } 280 printf("AVRCP Browsing Controller already disconnected\n"); 281 break; 282 case '\n': 283 case '\r': 284 break; 285 default: 286 show_usage(); 287 return; 288 } 289 if (status != ERROR_CODE_SUCCESS){ 290 printf("Could not perform command, status 0x%2x\n", status); 291 } 292 } 293 #endif 294 /* EXAMPLE_END */ 295