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 // // Register AVRCP for HCI events. 140 // avrcp_browsing_controller_register_packet_handler(&avrcp_browsing_controller_packet_handler); 141 142 // Initialize SDP. 143 sdp_init(); 144 145 // Create AVRCP service record and register it with SDP. 146 memset(sdp_avrcp_browsing_controller_service_buffer, 0, sizeof(sdp_avrcp_browsing_controller_service_buffer)); 147 avrcp_controller_create_sdp_record(sdp_avrcp_browsing_controller_service_buffer, 0x10001, BROWSING_ENABLED, 1, NULL, NULL); 148 sdp_register_service(sdp_avrcp_browsing_controller_service_buffer); 149 150 // Set local name with a template Bluetooth address, that will be automatically 151 // replaced with a actual address once it is available, i.e. when BTstack boots 152 // up and starts talking to a Bluetooth module. 153 gap_set_local_name("AVRCP Browsing Client 00:00:00:00:00:00"); 154 gap_discoverable_control(1); 155 gap_set_class_of_device(0x200408); 156 157 #ifdef HAVE_BTSTACK_STDIN 158 // Parse human readable Bluetooth address. 159 sscanf_bd_addr(device_addr_string, device_addr); 160 btstack_stdin_setup(stdin_process); 161 #endif 162 printf("Starting BTstack ...\n"); 163 hci_power_control(HCI_POWER_ON); 164 return 0; 165 } 166 /* LISTING_END */ 167 168 169 static void avrcp_browsing_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 170 UNUSED(channel); 171 UNUSED(size); 172 if (packet_type != HCI_EVENT_PACKET) return; 173 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 174 175 uint16_t local_cid; 176 uint8_t status = 0xFF; 177 bd_addr_t adress; 178 179 switch (packet[2]){ 180 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 181 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 182 if (browsing_cid != 0 && browsing_cid != local_cid) { 183 printf("AVRCP Browsing Client: AVRCP Controller connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", browsing_cid, local_cid); 184 return; 185 } 186 187 status = avrcp_subevent_connection_established_get_status(packet); 188 if (status != ERROR_CODE_SUCCESS){ 189 printf("AVRCP Browsing Client: AVRCP Controller connection failed: status 0x%02x\n", status); 190 browsing_cid = 0; 191 return; 192 } 193 194 avrcp_cid = local_cid; 195 avrcp_connected = 1; 196 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 197 printf("AVRCP Browsing Client: AVRCP Controller Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 198 return; 199 } 200 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 201 printf("AVRCP Browsing Client: AVRCP Controller Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 202 browsing_cid = 0; 203 avrcp_browsing_connected = 0; 204 return; 205 206 case AVRCP_SUBEVENT_BROWSING_CONNECTION_ESTABLISHED: { 207 local_cid = avrcp_subevent_browsing_connection_established_get_browsing_cid(packet); 208 if (browsing_cid != 0 && browsing_cid != local_cid) { 209 printf("AVRCP Browsing Client: AVRCP Browsing Controller Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", browsing_cid, local_cid); 210 return; 211 } 212 213 status = avrcp_subevent_browsing_connection_established_get_status(packet); 214 if (status != ERROR_CODE_SUCCESS){ 215 printf("AVRCP Browsing Client: AVRCP Browsing Controller Connection failed: status 0x%02x\n", status); 216 browsing_cid = 0; 217 return; 218 } 219 220 browsing_cid = local_cid; 221 avrcp_browsing_connected = 1; 222 avrcp_subevent_browsing_connection_established_get_bd_addr(packet, adress); 223 printf("AVRCP Browsing Client: AVRCP Browsing Controller Channel successfully opened: %s, browsing_cid 0x%02x\n", bd_addr_to_str(adress), browsing_cid); 224 return; 225 } 226 case AVRCP_SUBEVENT_BROWSING_CONNECTION_RELEASED: 227 printf("AVRCP Browsing Client: AVRCP Browsing Controller Channel released: browsing_cid 0x%02x\n", avrcp_subevent_browsing_connection_released_get_browsing_cid(packet)); 228 browsing_cid = 0; 229 avrcp_browsing_connected = 0; 230 return; 231 default: 232 printf("AVRCP Browsing Client: event is not parsed\n"); 233 break; 234 } 235 } 236 237 #ifdef HAVE_BTSTACK_STDIN 238 static void show_usage(void){ 239 bd_addr_t iut_address; 240 gap_local_bd_addr(iut_address); 241 printf("\n--- Bluetooth AVRCP Controller Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 242 printf("a - AVRCP Controller create connection to addr %s\n", bd_addr_to_str(device_addr)); 243 printf("c - AVRCP Browsing Controller create connection to addr %s\n", bd_addr_to_str(device_addr)); 244 printf("C - AVRCP Browsing Controller disconnect\n"); 245 printf("A - AVRCP Controller disconnect\n"); 246 printf("p - Get player list\n"); 247 printf("---\n"); 248 } 249 #endif 250 251 252 #ifdef HAVE_BTSTACK_STDIN 253 static void stdin_process(char cmd){ 254 uint8_t status = ERROR_CODE_SUCCESS; 255 256 switch (cmd){ 257 case 'a': 258 printf(" - Create AVRCP connection for control to addr %s.\n", bd_addr_to_str(device_addr)); 259 status = avrcp_controller_connect(device_addr, &avrcp_cid); 260 break; 261 case 'A': 262 if (avrcp_connected){ 263 printf(" - AVRCP Controller disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 264 status = avrcp_controller_disconnect(avrcp_cid); 265 break; 266 } 267 printf("AVRCP Controller already disconnected\n"); 268 break; 269 270 case 'c': 271 if (!avrcp_connected) { 272 printf(" You must first create AVRCP connection for control to addr %s.\n", bd_addr_to_str(device_addr)); 273 break; 274 } 275 printf(" - Create AVRCP connection for browsing to addr %s.\n", bd_addr_to_str(device_addr)); 276 status = avrcp_browsing_controller_connect(device_addr, ertm_buffer, sizeof(ertm_buffer), &ertm_config, &browsing_cid); 277 break; 278 case 'C': 279 if (avrcp_browsing_connected){ 280 printf(" - AVRCP Browsing Controller disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 281 status = avrcp_browsing_controller_disconnect(browsing_cid); 282 break; 283 } 284 printf("AVRCP Browsing Controller already disconnected\n"); 285 break; 286 287 case 'p': 288 printf("AVRCP Browsing: get player list\n"); 289 avrcp_browsing_controller_get_player_list(browsing_cid); 290 break; 291 292 case '\n': 293 case '\r': 294 break; 295 default: 296 show_usage(); 297 return; 298 } 299 300 if (status != ERROR_CODE_SUCCESS){ 301 printf("Could not perform command, status 0x%2x\n", status); 302 } 303 } 304 #endif 305 /* EXAMPLE_END */ 306