void sco_demo_init(void){
// status
#if SCO_DEMO_MODE == SCO_DEMO_MODE_MICROPHONE
printf("SCO Demo: Sending and receiving audio via portaudio.\n");
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
#ifdef HAVE_PORTAUDIO
printf("SCO Demo: Sending sine wave, audio output via portaudio.\n");
#else
printf("SCO Demo: Sending sine wave, hexdump received data.\n");
#endif
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
printf("SCO Demo: Sending ASCII blocks, print received data.\n");
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_COUNTER
printf("SCO Demo: Sending counter value, hexdump received data.\n");
#endif
#if (SCO_DEMO_MODE == SCO_DEMO_MODE_SINE) || (SCO_DEMO_MODE == SCO_DEMO_MODE_MICROPHONE)
hci_set_sco_voice_setting(0x60); // linear, unsigned, 16-bit, CVSD
#else
hci_set_sco_voice_setting(0x03); // linear, unsigned, 8-bit, transparent
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
phase = 'a';
#endif
}
int btstack_main(int argc, const char * argv[]){
hci_set_sco_voice_setting(0x0060); // PCM, 16 bit, 2's complement, MSB Position 0,
setup_audio();
hci_register_sco_packet_handler(&sco_packet_handler);
memset((uint8_t *)hsp_service_buffer, 0, sizeof(hsp_service_buffer));
hsp_hs_create_service((uint8_t *)hsp_service_buffer, rfcomm_channel_nr, hsp_hs_service_name, 0);
hsp_hs_init(rfcomm_channel_nr);
hsp_hs_register_packet_handler(packet_handler);
sdp_init();
sdp_register_service_internal(NULL, (uint8_t *)hsp_service_buffer);
hci_discoverable_control(1);
hci_set_class_of_device(0x200418);
btstack_stdin_setup(stdin_process);
// turn on!
hci_power_control(HCI_POWER_ON);
return 0;
}
void sco_demo_init(void){
// status
#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
#ifdef HAVE_PORTAUDIO
printf("SCO Demo: Sending sine wave, audio output via portaudio.\n");
#else
printf("SCO Demo: Sending sine wave, hexdump received data.\n");
#endif
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
printf("SCO Demo: Sending ASCII blocks, print received data.\n");
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_COUNTER
printf("SCO Demo: Sending counter value, hexdump received data.\n");
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
#ifdef SCO_WAV_FILENAME
wav_file = wav_init(SCO_WAV_FILENAME);
const int sample_rate = 8000;
const int num_samples = sample_rate * SCO_WAV_DURATION_IN_SECONDS;
const int num_channels = 1;
const int bytes_per_sample = 1;
write_wav_header(wav_file, sample_rate, num_channels, num_samples, bytes_per_sample);
num_samples_to_write = num_samples;
#endif
#endif
#ifdef USE_PORTAUDIO
int err;
PaStreamParameters outputParameters;
/* -- initialize PortAudio -- */
err = Pa_Initialize();
if( err != paNoError ) return;
/* -- setup input and output -- */
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
outputParameters.channelCount = NUM_CHANNELS;
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
/* -- setup stream -- */
err = Pa_OpenStream(
&stream,
NULL, // &inputParameters,
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
NULL, /* no callback, use blocking API */
NULL ); /* no callback, so no callback userData */
if( err != paNoError ) return;
/* -- start stream -- */
err = Pa_StartStream( stream );
if( err != paNoError ) return;
#endif
#if SCO_DEMO_MODE != SCO_DEMO_MODE_SINE
hci_set_sco_voice_setting(0x03); // linear, unsigned, 8-bit, transparent
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
phase = 'a';
#endif
}