mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-11 03:47:01 +00:00
Code Issues Packages Projects Releases Wiki Activity
b548dda644
btstack/test/avdtp/avdtp_source_demo.c
Milanka Ringwald b548dda644 send sine
2017-04-19 16:12:03 +02:00

416 lines
16 KiB
C
Raw Blame History

/*
* Copyright (C) 2016 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include "btstack_config.h"
#include "btstack_debug.h"
#include "btstack_event.h"
#include "btstack_memory.h"
#include "btstack_run_loop.h"
#include "gap.h"
#include "hci.h"
#include "hci_cmd.h"
#include "hci_dump.h"
#include "l2cap.h"
#include "stdin_support.h"
#include "avdtp_source.h"
#include "a2dp_source.h"
#include "btstack_sbc.h"
#include "sbc_encoder.h"
#include "avdtp_util.h"
#include "hxcmod.h"
#include "mod.h"
#define NUM_CHANNELS 2
#define SAMPLE_RATE 44100
#define BYTES_PER_AUDIO_SAMPLE (2*NUM_CHANNELS)
#define LATENCY 300 // ms
#ifndef M_PI
#define M_PI 3.14159265
#endif
#define TABLE_SIZE_441HZ 100
typedef struct {
int16_t source[TABLE_SIZE_441HZ];
int left_phase;
int right_phase;
} paTestData;
typedef enum {
STREAM_SINE,
STREAM_MOD
} stream_data_source_t;
static uint8_t media_sbc_codec_capabilities[] = {
0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO,
0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS,
2, 53
};
static char * device_name = "A2DP Source BTstack";
// mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3};
// pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5};
// mac 2013: static bd_addr_t remote = {0x84, 0x38, 0x35, 0x65, 0xd1, 0x15};
// phone 2013: static bd_addr_t remote = {0xD8, 0xBB, 0x2C, 0xDF, 0xF0, 0xF2};
// minijambox:
static bd_addr_t remote = {0x00, 0x21, 0x3c, 0xac, 0xf7, 0x38};
// head phones: static bd_addr_t remote = {0x00, 0x18, 0x09, 0x28, 0x50, 0x18};
// bt dongle: -u 02-04-01
// static bd_addr_t remote = {0x00, 0x15, 0x83, 0x5F, 0x9D, 0x46};
static uint8_t sdp_avdtp_source_service_buffer[150];
static uint8_t media_sbc_codec_configuration[4];
static uint8_t sbc_samples_storage[44100*4];
static uint32_t fill_audio_ring_buffer_timeout_ms;
static uint32_t time_audio_data_sent; // ms
static uint32_t acc_num_missed_samples;
static uint32_t samples_ready;
static btstack_timer_source_t fill_audio_ring_buffer_timer;
static btstack_ring_buffer_t sbc_ring_buffer;
static paTestData sin_data;
static int hxcmod_initialized = 0;
static modcontext mod_context;
static tracker_buffer_state trkbuf;
static uint8_t int_seid = 0;
static uint8_t acp_seid = 0;
static uint16_t a2dp_cid = 0;
static int start_streaming_timer = 0;
a2dp_state_t app_state = A2DP_IDLE;
stream_data_source_t data_source = STREAM_SINE;
static btstack_packet_callback_registration_t hci_event_callback_registration;
static void avdtp_fill_audio_ring_buffer_timer_start(void);
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(channel);
UNUSED(size);
bd_addr_t event_addr;
uint8_t signal_identifier;
uint8_t status;
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (hci_event_packet_get_type(packet)) {
case HCI_EVENT_PIN_CODE_REQUEST:
// inform about pin code request
printf("Pin code request - using '0000'\n");
hci_event_pin_code_request_get_bd_addr(packet, event_addr);
hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000");
break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
// connection closed -> quit test app
printf("\n --- application --- HCI_EVENT_DISCONNECTION_COMPLETE ---\n");
break;
case HCI_EVENT_AVDTP_META:
switch (packet[2]){
case AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED:
int_seid = avdtp_subevent_streaming_connection_established_get_int_seid(packet);
acp_seid = avdtp_subevent_streaming_connection_established_get_acp_seid(packet);
a2dp_cid = avdtp_subevent_streaming_connection_established_get_avdtp_cid(packet);
printf(" --- application --- AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED --- a2dp_cid 0x%02x, local seid %d, remote seid %d\n", a2dp_cid, int_seid, acp_seid);
break;
case AVDTP_SUBEVENT_SIGNALING_ACCEPT:
signal_identifier = avdtp_subevent_signaling_accept_get_signal_identifier(packet);
status = avdtp_subevent_signaling_accept_get_status(packet);
printf(" --- application --- Accepted %d\n", signal_identifier);
switch (signal_identifier){
case AVDTP_SI_START:
if (start_streaming_timer){
if (avdtp_source_stream_endpoint_ready(int_seid)){
avdtp_fill_audio_ring_buffer_timer_start();
start_streaming_timer = 0;
}
}
break;
default:
break;
}
break;
case AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW:
avdtp_source_stream_send_media_payload(int_seid, &sbc_ring_buffer, 0);
if (btstack_ring_buffer_bytes_available(&sbc_ring_buffer)){
avdtp_source_stream_endpoint_request_can_send_now(int_seid);
}
break;
default:
app_state = A2DP_IDLE;
printf(" --- application --- not implemented\n");
break;
}
break;
default:
break;
}
break;
default:
// other packet type
break;
}
}
static void show_usage(void){
bd_addr_t iut_address;
gap_local_bd_addr(iut_address);
printf("\n--- Bluetooth AVDTP SOURCE Test Console %s ---\n", bd_addr_to_str(iut_address));
printf("c - create connection to addr %s\n", bd_addr_to_str(remote));
printf("C - disconnect\n");
printf("x - start streaming sine\n");
if (hxcmod_initialized){
printf("z - start streaming '%s'\n", mod_name);
}
printf("X - stop streaming\n");
printf("Ctrl-c - exit\n");
printf("---\n");
}
static void produce_sine_audio(int16_t * pcm_buffer, void *user_data, int num_samples_to_write){
paTestData *data = (paTestData*)user_data;
int count;
for (count = 0; count < num_samples_to_write ; count++){
pcm_buffer[count * 2] = data->source[data->left_phase];
pcm_buffer[count * 2 + 1] = data->source[data->right_phase];
data->left_phase += 1;
if (data->left_phase >= TABLE_SIZE_441HZ){
data->left_phase -= TABLE_SIZE_441HZ;
}
data->right_phase += 1;
if (data->right_phase >= TABLE_SIZE_441HZ){
data->right_phase -= TABLE_SIZE_441HZ;
}
}
}
static void produce_mod_audio(int16_t * pcm_buffer, int num_samples_to_write){
hxcmod_fillbuffer(&mod_context, (unsigned short *) &pcm_buffer[0], num_samples_to_write, &trkbuf);
}
static void produce_audio(int16_t * pcm_buffer, int num_samples){
switch (data_source){
case STREAM_SINE:
produce_sine_audio(pcm_buffer, &sin_data, num_samples);
break;
case STREAM_MOD:
produce_mod_audio(pcm_buffer, num_samples);
break;
}
}
static int fill_sbc_ring_buffer(void){
// performe sbc encoding
int total_num_bytes_read = 0;
int num_audio_samples_per_sbc_buffer = btstack_sbc_encoder_num_audio_frames();
// int audio_bytes_to_read = num_audio_samples_per_sbc_buffer * BYTES_PER_AUDIO_SAMPLE;
while (samples_ready >= num_audio_samples_per_sbc_buffer
&& btstack_ring_buffer_bytes_free(&sbc_ring_buffer) >= btstack_sbc_encoder_sbc_buffer_length()){
uint8_t pcm_frame[256*BYTES_PER_AUDIO_SAMPLE];
produce_audio((int16_t *) pcm_frame, num_audio_samples_per_sbc_buffer);
btstack_sbc_encoder_process_data((int16_t *) pcm_frame);
uint16_t sbc_frame_size = btstack_sbc_encoder_sbc_buffer_length();
uint8_t * sbc_frame = btstack_sbc_encoder_sbc_buffer();
total_num_bytes_read += num_audio_samples_per_sbc_buffer;
if (btstack_ring_buffer_bytes_free(&sbc_ring_buffer) >= sbc_frame_size ){
uint8_t size_buffer = sbc_frame_size;
btstack_ring_buffer_write(&sbc_ring_buffer, &size_buffer, 1);
btstack_ring_buffer_write(&sbc_ring_buffer, sbc_frame, sbc_frame_size);
} else {
printf("No space in sbc buffer\n");
}
}
return total_num_bytes_read;
}
static void avdtp_fill_audio_ring_buffer_timeout_handler(btstack_timer_source_t * timer){
UNUSED(timer);
btstack_run_loop_set_timer(&fill_audio_ring_buffer_timer, fill_audio_ring_buffer_timeout_ms); // 2 seconds timeout
btstack_run_loop_add_timer(&fill_audio_ring_buffer_timer);
uint32_t now = btstack_run_loop_get_time_ms();
uint32_t update_period_ms = fill_audio_ring_buffer_timeout_ms;
if (time_audio_data_sent > 0){
update_period_ms = now - time_audio_data_sent;
}
uint32_t num_samples = (update_period_ms * 44100) / 1000;
acc_num_missed_samples += (update_period_ms * 44100) % 1000;
if (acc_num_missed_samples >= 1000){
num_samples++;
acc_num_missed_samples -= 1000;
}
time_audio_data_sent = now;
samples_ready += num_samples;
int total_num_bytes_read = fill_sbc_ring_buffer();
// schedule sending
if (total_num_bytes_read != 0){
avdtp_source_stream_endpoint_request_can_send_now(int_seid);
}
}
static void avdtp_fill_audio_ring_buffer_timer_start(void){
btstack_run_loop_remove_timer(&fill_audio_ring_buffer_timer);
btstack_run_loop_set_timer_handler(&fill_audio_ring_buffer_timer, avdtp_fill_audio_ring_buffer_timeout_handler);
// btstack_run_loop_set_timer_context(&fill_audio_ring_buffer_timer, stream_endpoint);
btstack_run_loop_set_timer(&fill_audio_ring_buffer_timer, fill_audio_ring_buffer_timeout_ms); // 50 ms timeout
btstack_run_loop_add_timer(&fill_audio_ring_buffer_timer);
}
static void avdtp_fill_audio_ring_buffer_timer_stop(void){
btstack_run_loop_remove_timer(&fill_audio_ring_buffer_timer);
}
static void avdtp_source_stream_data_start(void){
printf(" --- application --- avdtp_source_stream_data_start --- local seid %d, remote seid %d\n", int_seid, acp_seid);
a2dp_source_start_stream(a2dp_cid, int_seid, acp_seid);
start_streaming_timer = 1;
}
static void avdtp_source_stream_data_stop(){
a2dp_source_stop_stream(a2dp_cid, int_seid, acp_seid);
if (!avdtp_source_stream_endpoint_ready(int_seid)) return;
avdtp_fill_audio_ring_buffer_timer_stop();
}
static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){
UNUSED(ds);
UNUSED(callback_type);
int cmd = btstack_stdin_read();
switch (cmd){
case 'c':
printf("Creating L2CAP Connection to %s, PSM_AVDTP\n", bd_addr_to_str(remote));
a2dp_source_connect(remote, int_seid);
break;
case 'C':
printf("Disconnect not implemented\n");
a2dp_source_disconnect(a2dp_cid);
break;
case 'x':
avdtp_source_stream_data_start();
break;
case 'z':
avdtp_source_stream_data_start();
break;
case 'X':
avdtp_source_stream_data_stop();
break;
default:
show_usage();
break;
}
}
int btstack_main(int argc, const char * argv[]);
int btstack_main(int argc, const char * argv[]){
UNUSED(argc);
(void)argv;
/* Register for HCI events */
hci_event_callback_registration.callback = &packet_handler;
hci_add_event_handler(&hci_event_callback_registration);
l2cap_init();
// Initialize AVDTP Sink
a2dp_source_init();
a2dp_source_register_packet_handler(&packet_handler);
//#ifndef SMG_BI
int_seid = a2dp_source_create_stream_endpoint(AVDTP_AUDIO, AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration));
// Initialize SDP
sdp_init();
memset(sdp_avdtp_source_service_buffer, 0, sizeof(sdp_avdtp_source_service_buffer));
a2dp_source_create_sdp_record(sdp_avdtp_source_service_buffer, 0x10002, 1, NULL, NULL);
sdp_register_service(sdp_avdtp_source_service_buffer);
gap_set_local_name(device_name);
gap_discoverable_control(1);
gap_set_class_of_device(0x200408);
memset(sbc_samples_storage, 0, sizeof(sbc_samples_storage));
btstack_ring_buffer_init(&sbc_ring_buffer, sbc_samples_storage, sizeof(sbc_samples_storage));
fill_audio_ring_buffer_timeout_ms = 50;
/* initialise sinusoidal wavetable */
int i;
for (i=0; i<TABLE_SIZE_441HZ; i++){
sin_data.source[i] = sin(((double)i/(double)TABLE_SIZE_441HZ) * M_PI * 2.)*32767;
}
sin_data.left_phase = sin_data.right_phase = 0;
hxcmod_initialized = hxcmod_init(&mod_context);
if (hxcmod_initialized){
hxcmod_setcfg(&mod_context, 44100, 16, 1, 1, 1);
hxcmod_load(&mod_context, (void *) &mod_data, mod_len);
printf("loaded mod '%s', size %u\n", mod_name, mod_len);
}
// turn on!
hci_power_control(HCI_POWER_ON);
btstack_stdin_setup(stdin_process);
return 0;
}
Reference in New Issue View Git Blame Copy Permalink