1 /* 2 * Copyright (C) 2014 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 /* 39 * hsp_ag_demo.c 40 */ 41 42 // ***************************************************************************** 43 /* EXAMPLE_START(hsp_ag_demo): HSP Audio Gateway Demo 44 * 45 * @text This example implements a HSP Audio Gateway device that sends and receives 46 * audio signal over HCI SCO. It demonstrates how to receive 47 * an output from a remote headset (HS), and, 48 * if HAVE_POSIX_STDIN is defined, how to control the HS. 49 */ 50 // ***************************************************************************** 51 52 53 54 #include <stdint.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 #include "btstack.h" 61 #include "sco_demo_util.h" 62 #ifdef HAVE_POSIX_STDIN 63 #include "stdin_support.h" 64 #endif 65 66 static uint8_t hsp_service_buffer[150]; 67 static const uint8_t rfcomm_channel_nr = 1; 68 static const char hsp_ag_service_name[] = "Audio Gateway Test"; 69 static uint16_t sco_handle = 0; 70 71 static char hs_cmd_buffer[100]; 72 73 static bd_addr_t device_addr = {0x00,0x1b,0xDC,0x07,0x32,0xEF}; 74 75 /* @section Audio Transfer Setup 76 * 77 * @text A pre-computed sine wave (160Hz) is used as the input audio signal. 160 Hz. 78 * To send and receive an audio signal, ENABLE_SCO_OVER_HCI has to be defined. 79 * 80 * Tested working setups: 81 * - Ubuntu 14 64-bit, CC2564B connected via FTDI USB-2-UART adapter, 921600 baud 82 * - Ubuntu 14 64-bit, CSR USB dongle 83 * - OS X 10.11, CSR USB dongle 84 * 85 * Broken setups: 86 * - OS X 10.11, CC2564B connected via FDTI USB-2-UART adapter, 921600 baud 87 * - select(..) blocks > 400 ms -> num completed is received to late -> gaps between audio 88 * - looks like bug in select->FTDI driver as it works correct on Linux 89 * 90 * SCO not routed over HCI yet: 91 * - CSR UART dongle 92 * - Broadcom USB dongle 93 * - Broadcom UART chipset 94 * - .. 95 * 96 */ 97 98 99 static void show_usage(void){ 100 bd_addr_t iut_address; 101 gap_local_bd_addr(iut_address); 102 103 printf("\n--- Bluetooth HSP Audio Gateway Test Console %s ---\n", bd_addr_to_str(iut_address)); 104 105 printf("---\n"); 106 printf("c - Connect to %s\n", bd_addr_to_str(device_addr)); 107 printf("C - Disconnect\n"); 108 printf("a - establish audio connection\n"); 109 printf("A - release audio connection\n"); 110 printf("m - set microphone gain 8\n"); 111 printf("M - set microphone gain 15\n"); 112 printf("o - set speaker gain 0\n"); 113 printf("s - set speaker gain 8\n"); 114 printf("S - set speaker gain 15\n"); 115 printf("r - start ringing\n"); 116 printf("t - stop ringing\n"); 117 printf("---\n"); 118 printf("Ctrl-c - exit\n"); 119 printf("---\n"); 120 } 121 122 #ifdef HAVE_POSIX_STDIN 123 static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 124 UNUSED(ds); 125 UNUSED(callback_type); 126 127 char buffer = btstack_stdin_read(); 128 129 switch (buffer){ 130 case 'c': 131 printf("Connect to %s\n", bd_addr_to_str(device_addr)); 132 hsp_ag_connect(device_addr); 133 break; 134 case 'C': 135 printf("Disconnect.\n"); 136 hsp_ag_disconnect(); 137 break; 138 case 'a': 139 printf("Establish audio connection\n"); 140 hsp_ag_establish_audio_connection(); 141 break; 142 case 'A': 143 printf("Release audio connection\n"); 144 hsp_ag_release_audio_connection(); 145 break; 146 case 'm': 147 printf("Setting microphone gain 8\n"); 148 hsp_ag_set_microphone_gain(8); 149 break; 150 case 'M': 151 printf("Setting microphone gain 15\n"); 152 hsp_ag_set_microphone_gain(15); 153 break; 154 case 'o': 155 printf("Setting speaker gain 0\n"); 156 hsp_ag_set_speaker_gain(0); 157 break; 158 case 's': 159 printf("Setting speaker gain 8\n"); 160 hsp_ag_set_speaker_gain(8); 161 break; 162 case 'S': 163 printf("Setting speaker gain 15\n"); 164 hsp_ag_set_speaker_gain(15); 165 break; 166 case 'r': 167 printf("Start ringing\n"); 168 hsp_ag_start_ringing(); 169 break; 170 case 't': 171 printf("Stop ringing\n"); 172 hsp_ag_stop_ringing(); 173 break; 174 default: 175 show_usage(); 176 break; 177 178 } 179 } 180 #endif 181 182 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){ 183 UNUSED(channel); 184 185 switch (packet_type){ 186 187 case HCI_SCO_DATA_PACKET: 188 sco_demo_receive(event, event_size); 189 break; 190 191 case HCI_EVENT_PACKET: 192 switch (event[0]) { 193 case BTSTACK_EVENT_STATE: 194 if (event[2] != HCI_STATE_WORKING) break; 195 show_usage(); 196 break; 197 case HCI_EVENT_SCO_CAN_SEND_NOW: 198 sco_demo_send(sco_handle); 199 break; 200 case HCI_EVENT_HSP_META: 201 switch (event[2]) { 202 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE: 203 if (hsp_subevent_rfcomm_connection_complete_get_status(event)){ 204 printf("RFCOMM connection establishement failed with status %u\n", hsp_subevent_rfcomm_connection_complete_get_status(event)); 205 } else { 206 printf("RFCOMM connection established.\n"); 207 } 208 break; 209 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE: 210 if (hsp_subevent_rfcomm_disconnection_complete_get_status(event)){ 211 printf("RFCOMM disconnection failed with status %u.\n", hsp_subevent_rfcomm_disconnection_complete_get_status(event)); 212 } else { 213 printf("RFCOMM disconnected.\n"); 214 } 215 break; 216 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 217 if (hsp_subevent_audio_connection_complete_get_status(event)){ 218 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 219 sco_handle = 0; 220 } else { 221 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 222 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 223 hci_request_sco_can_send_now_event(); 224 } 225 break; 226 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 227 if (hsp_subevent_audio_disconnection_complete_get_status(event)){ 228 printf("Audio connection releasing failed with status %u\n", hsp_subevent_audio_disconnection_complete_get_status(event)); 229 } else { 230 printf("Audio connection released.\n\n"); 231 sco_handle = 0; 232 } 233 break; 234 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 235 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 236 break; 237 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 238 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 239 break; 240 case HSP_SUBEVENT_HS_COMMAND:{ 241 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 242 int cmd_length = hsp_subevent_hs_command_get_value_length(event); 243 int size = cmd_length <= sizeof(hs_cmd_buffer)? cmd_length : sizeof(hs_cmd_buffer); 244 memcpy(hs_cmd_buffer, hsp_subevent_hs_command_get_value(event), size - 1); 245 printf("Received custom command: \"%s\". \nExit code or call hsp_ag_send_result.\n", hs_cmd_buffer); 246 break; 247 } 248 default: 249 printf("event not handled %u\n", event[2]); 250 break; 251 } 252 break; 253 default: 254 break; 255 } 256 break; 257 default: 258 break; 259 } 260 } 261 262 /* @section Main Application Setup 263 * 264 * @text Listing MainConfiguration shows main application code. 265 * To run a HSP Audio Gateway service you need to initialize the SDP, and to create and register HSP AG record with it. 266 * In this example, the SCO over HCI is used to receive and send an audio signal. 267 * 268 * Two packet handlers are registered: 269 * - The HCI SCO packet handler receives audio data. 270 * - The HSP AG packet handler is used to trigger sending of audio data and commands to the HS. It also receives the AG's answers. 271 * 272 * The stdin_process callback allows for sending commands to the AG. 273 * At the end the Bluetooth stack is started. 274 */ 275 276 /* LISTING_START(MainConfiguration): Setup HSP Audio Gateway */ 277 int btstack_main(int argc, const char * argv[]); 278 int btstack_main(int argc, const char * argv[]){ 279 (void)argc; 280 (void)argv; 281 282 sco_demo_init(); 283 284 l2cap_init(); 285 286 sdp_init(); 287 288 memset((uint8_t *)hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 289 hsp_ag_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_ag_service_name); 290 printf("SDP service record size: %u\n", de_get_len(hsp_service_buffer)); 291 sdp_register_service(hsp_service_buffer); 292 293 rfcomm_init(); 294 295 hsp_ag_init(rfcomm_channel_nr); 296 hsp_ag_register_packet_handler(&packet_handler); 297 hci_register_sco_packet_handler(&packet_handler); 298 299 #ifdef HAVE_POSIX_STDIN 300 btstack_stdin_setup(stdin_process); 301 #endif 302 303 gap_set_local_name("BTstack HSP AG"); 304 gap_discoverable_control(1); 305 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 306 gap_set_class_of_device(0x400204); 307 308 // turn on! 309 hci_power_control(HCI_POWER_ON); 310 return 0; 311 } 312 /* LISTING_END */ 313 /* EXAMPLE_END */ 314