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https://github.com/bluekitchen/btstack.git
synced 2025-03-28 08:37:22 +00:00
try sending 16 bit pcm sco data
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@ -74,7 +74,7 @@
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#define NUM_CHANNELS 1
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#define SAMPLE_RATE 8000
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#define FRAMES_PER_BUFFER 1000
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#define PA_SAMPLE_TYPE paInt8
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#define PA_SAMPLE_TYPE paInt16
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#define TABLE_SIZE (50)
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const uint32_t hsp_service_buffer[150/4]; // implicit alignment to 4-byte memory address
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@ -82,8 +82,8 @@ const uint8_t rfcomm_channel_nr = 1;
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const char hsp_hs_service_name[] = "Headset Test";
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static uint16_t sco_handle = 0;
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static bd_addr_t pts_addr = {0x00,0x1b,0xDC,0x07,0x32,0xEF}; // PTS dongle
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static bd_addr_t local_mac = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; // MacBook Air 2011
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// static bd_addr_t local_mac = {0x84, 0x38, 0x35, 0x65, 0xD1, 0x15}; // MacBook Air 2013
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// static bd_addr_t local_mac = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; // MacBook Air 2011
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static bd_addr_t local_mac = {0x84, 0x38, 0x35, 0x65, 0xD1, 0x15}; // MacBook Air 2013
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// static bd_addr_t local_mac = {0x54, 0xe4, 0x3a, 0x26, 0xa2, 0x39}; // iPhone 5S
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// static bd_addr_t local_mac = {0x00,0x1a,0x7d,0xda,0x71,0x0a}; // CSR Dongle
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static bd_addr_t current_addr;
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@ -92,7 +92,7 @@ static char hs_cmd_buffer[100];
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// portaudio globals
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static PaStream * stream;
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static int8_t sine[TABLE_SIZE];
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static uint16_t sine[TABLE_SIZE];
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int phase = 0;
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// prototypes
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@ -103,7 +103,7 @@ static void setup_audio(void){
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// create sine wave table
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int i;
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for( i=0; i<TABLE_SIZE; i++ ) {
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sine[i] = (uint8_t) (127.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
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sine[i] = (uint16_t) (30000 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
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}
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int err;
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@ -213,34 +213,34 @@ static int stdin_process(struct data_source *ds){
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return 0;
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}
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#if 0
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#if 1
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static void try_send_sco(void){
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printf("try send handle %x\n", sco_handle);
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if (!sco_handle) return;
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if (!hci_can_send_sco_packet_now(sco_handle)) {
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printf("try_send_sco, cannot send now\n");
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// printf("try_send_sco, cannot send now\n");
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return;
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}
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const int frames_per_packet = 9;
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printf("try send handle %x\n", sco_handle);
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const int frames_per_packet = 24;
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hci_reserve_packet_buffer();
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uint8_t * sco_packet = hci_get_outgoing_packet_buffer();
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// set handle + flags
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bt_store_16(sco_packet, 0, sco_handle);
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// set len
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sco_packet[2] = frames_per_packet;
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sco_packet[2] = frames_per_packet * 2; // 16 bit PCM
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int i;
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for (i=0;i<frames_per_packet;i++){
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sco_packet[3+i] = sine[phase];
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bt_store_16(sco_packet, 3 + 2*i, sine[phase]);
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phase++;
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if (phase >= TABLE_SIZE) phase = 0;
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}
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hci_send_sco_packet_buffer(3 + frames_per_packet);
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hci_send_sco_packet_buffer(3 + frames_per_packet * 2);
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}
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#endif
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static void packet_handler(uint8_t * event, uint16_t event_size){
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// printf("Packet handler event 0x%02x\n", event[0]);
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// try_send_sco();
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try_send_sco();
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switch (event[0]) {
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case BTSTACK_EVENT_STATE:
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if (event[2] != HCI_STATE_WORKING) break;
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@ -311,6 +311,8 @@ static void sco_packet_handler(uint8_t packet_type, uint8_t * packet, uint16_t s
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int btstack_main(int argc, const char * argv[]);
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int btstack_main(int argc, const char * argv[]){
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hci_set_sco_voice_setting(0x0060); // PCM, 16 bit, 2's complement, MSB Position 0,
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setup_audio();
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hci_register_sco_packet_handler(&sco_packet_handler);
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