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 char buffer; 125 read(ds->fd, &buffer, 1); 126 127 switch (buffer){ 128 case 'c': 129 printf("Connect to %s\n", bd_addr_to_str(device_addr)); 130 hsp_ag_connect(device_addr); 131 break; 132 case 'C': 133 printf("Disconnect.\n"); 134 hsp_ag_disconnect(); 135 break; 136 case 'a': 137 printf("Establish audio connection\n"); 138 hsp_ag_establish_audio_connection(); 139 break; 140 case 'A': 141 printf("Release audio connection\n"); 142 hsp_ag_release_audio_connection(); 143 break; 144 case 'm': 145 printf("Setting microphone gain 8\n"); 146 hsp_ag_set_microphone_gain(8); 147 break; 148 case 'M': 149 printf("Setting microphone gain 15\n"); 150 hsp_ag_set_microphone_gain(15); 151 break; 152 case 'o': 153 printf("Setting speaker gain 0\n"); 154 hsp_ag_set_speaker_gain(0); 155 break; 156 case 's': 157 printf("Setting speaker gain 8\n"); 158 hsp_ag_set_speaker_gain(8); 159 break; 160 case 'S': 161 printf("Setting speaker gain 15\n"); 162 hsp_ag_set_speaker_gain(15); 163 break; 164 case 'r': 165 printf("Start ringing\n"); 166 hsp_ag_start_ringing(); 167 break; 168 case 't': 169 printf("Stop ringing\n"); 170 hsp_ag_stop_ringing(); 171 break; 172 default: 173 show_usage(); 174 break; 175 176 } 177 } 178 #endif 179 180 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){ 181 182 switch (packet_type){ 183 184 case HCI_SCO_DATA_PACKET: 185 sco_demo_receive(event, event_size); 186 break; 187 188 case HCI_EVENT_PACKET: 189 switch (event[0]) { 190 case BTSTACK_EVENT_STATE: 191 if (event[2] != HCI_STATE_WORKING) break; 192 show_usage(); 193 break; 194 case HCI_EVENT_SCO_CAN_SEND_NOW: 195 sco_demo_send(sco_handle); 196 break; 197 case HCI_EVENT_HSP_META: 198 switch (event[2]) { 199 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE: 200 if (hsp_subevent_rfcomm_connection_complete_get_status(event)){ 201 printf("RFCOMM connection establishement failed with status %u\n", hsp_subevent_rfcomm_connection_complete_get_status(event)); 202 } else { 203 printf("RFCOMM connection established.\n"); 204 } 205 break; 206 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE: 207 if (hsp_subevent_rfcomm_disconnection_complete_get_status(event)){ 208 printf("RFCOMM disconnection failed with status %u.\n", hsp_subevent_rfcomm_disconnection_complete_get_status(event)); 209 } else { 210 printf("RFCOMM disconnected.\n"); 211 } 212 break; 213 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 214 if (hsp_subevent_audio_connection_complete_get_status(event)){ 215 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 216 sco_handle = 0; 217 } else { 218 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 219 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 220 hci_request_sco_can_send_now_event(); 221 } 222 break; 223 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 224 if (hsp_subevent_audio_disconnection_complete_get_status(event)){ 225 printf("Audio connection releasing failed with status %u\n", hsp_subevent_audio_disconnection_complete_get_status(event)); 226 } else { 227 printf("Audio connection released.\n\n"); 228 sco_handle = 0; 229 } 230 break; 231 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 232 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 233 break; 234 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 235 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 236 break; 237 case HSP_SUBEVENT_HS_COMMAND:{ 238 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 239 int cmd_length = hsp_subevent_hs_command_get_value_length(event); 240 int size = cmd_length <= sizeof(hs_cmd_buffer)? cmd_length : sizeof(hs_cmd_buffer); 241 memcpy(hs_cmd_buffer, hsp_subevent_hs_command_get_value(event), size - 1); 242 printf("Received custom command: \"%s\". \nExit code or call hsp_ag_send_result.\n", hs_cmd_buffer); 243 break; 244 } 245 default: 246 printf("event not handled %u\n", event[2]); 247 break; 248 } 249 break; 250 default: 251 break; 252 } 253 break; 254 default: 255 break; 256 } 257 } 258 259 /* @section Main Application Setup 260 * 261 * @text Listing MainConfiguration shows main application code. 262 * To run a HSP Audio Gateway service you need to initialize the SDP, and to create and register HSP AG record with it. 263 * In this example, the SCO over HCI is used to receive and send an audio signal. 264 * 265 * Two packet handlers are registered: 266 * - The HCI SCO packet handler receives audio data. 267 * - 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. 268 * 269 * The stdin_process callback allows for sending commands to the AG. 270 * At the end the Bluetooth stack is started. 271 */ 272 273 /* LISTING_START(MainConfiguration): Setup HSP Audio Gateway */ 274 int btstack_main(int argc, const char * argv[]); 275 int btstack_main(int argc, const char * argv[]){ 276 277 sco_demo_init(); 278 279 l2cap_init(); 280 281 sdp_init(); 282 283 memset((uint8_t *)hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 284 hsp_ag_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_ag_service_name); 285 printf("SDP service record size: %u\n", de_get_len(hsp_service_buffer)); 286 sdp_register_service(hsp_service_buffer); 287 288 rfcomm_init(); 289 290 hsp_ag_init(rfcomm_channel_nr); 291 hsp_ag_register_packet_handler(&packet_handler); 292 hci_register_sco_packet_handler(&packet_handler); 293 294 #ifdef HAVE_POSIX_STDIN 295 btstack_stdin_setup(stdin_process); 296 #endif 297 298 gap_set_local_name("BTstack HSP AG"); 299 gap_discoverable_control(1); 300 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 301 gap_set_class_of_device(0x400204); 302 303 // turn on! 304 hci_power_control(HCI_POWER_ON); 305 return 0; 306 } 307 /* LISTING_END */ 308 /* EXAMPLE_END */ 309