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test/le_audio: improve live playback in unicast sink

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This commit is contained in:
Matthias Ringwald 2022-10-31 11:30:31 +01:00
parent 03270f051d
commit c7e63273d7
1 changed files with 20 additions and 21 deletions
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41
test/le_audio/le_audio_unicast_sink.c
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@ -76,7 +76,7 @@
#include "wav_util.h"
#endif
#define DEBUG_PLC
//#define DEBUG_PLC
#ifdef DEBUG_PLC
#define printf_plc(...) printf(__VA_ARGS__)
#else
@ -88,10 +88,10 @@
#define MAX_SAMPLES_PER_FRAME 480
// playback
#define MAX_NUM_LC3_FRAMES 3
#define MAX_NUM_LC3_FRAMES 15
#define MAX_BYTES_PER_SAMPLE 4
#define PLAYBACK_BUFFER_SIZE (MAX_NUM_LC3_FRAMES * MAX_SAMPLES_PER_FRAME * MAX_BYTES_PER_SAMPLE)
#define PLAYBACK_START_MS 30
#define PLAYBACK_START_MS (MAX_NUM_LC3_FRAMES * 20 / 3)
// analysis
#define PACKET_PREFIX_LEN 10
@ -121,11 +121,6 @@ static enum {
//
static btstack_packet_callback_registration_t hci_event_callback_registration;
uint32_t last_samples_report_ms;
uint32_t samples_received;
uint32_t samples_dropped;
uint16_t frames_per_second[MAX_CHANNELS];
// remote info
static char remote_name[20];
static bd_addr_t remote_addr;
@ -181,6 +176,12 @@ static bool playback_active;
static uint8_t playback_buffer_storage[PLAYBACK_BUFFER_SIZE];
static btstack_ring_buffer_t playback_buffer;
// statistics
static uint32_t samples_received;
static uint32_t samples_played;
static uint32_t samples_dropped;
static uint32_t last_samples_report_ms;
// PLC state
#define PLC_GUARD_MS 1
@ -191,6 +192,8 @@ static void le_audio_connection_sink_playback(int16_t * buffer, uint16_t num_sam
// called from lower-layer but guaranteed to be on main thread
log_info("Playback: need %u, have %u", num_samples, btstack_ring_buffer_bytes_available(&playback_buffer) / (num_channels * 2));
samples_played += num_samples;
uint32_t bytes_needed = num_samples * num_channels * 2;
if (playback_active == false){
if (btstack_ring_buffer_bytes_available(&playback_buffer) >= playback_start_threshold_bytes) {
@ -200,6 +203,7 @@ static void le_audio_connection_sink_playback(int16_t * buffer, uint16_t num_sam
} else {
if (bytes_needed > btstack_ring_buffer_bytes_available(&playback_buffer)) {
log_info("Playback underrun");
printf("Playback Underrun\n");
// empty buffer
uint32_t bytes_read;
btstack_ring_buffer_read(&playback_buffer, (uint8_t *) buffer, bytes_needed, &bytes_read);
@ -350,13 +354,16 @@ static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *pack
case HCI_EVENT_DISCONNECTION_COMPLETE:
if (hci_event_disconnection_complete_get_connection_handle(packet) == remote_handle){
printf("Disconnected, back to scanning\n");
// close files
close_files();
// stop playback
const btstack_audio_sink_t * sink = btstack_audio_sink_get_instance();
if (sink != NULL){
sink->stop_stream();
}
start_scanning();
if (app_state != APP_SHUTDOWN){
start_scanning();
}
}
break;
case GAP_EVENT_ADVERTISING_REPORT:
@ -640,7 +647,6 @@ static void iso_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
log_info("Samples in playback buffer %5u", btstack_ring_buffer_bytes_available(&playback_buffer) / (num_channels * 2));
lc3_frames++;
frames_per_second[cis_channel]++;
// PLC
cached_iso_sdu_len = iso_sdu_length;
@ -651,18 +657,11 @@ static void iso_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
btstack_run_loop_set_timer_handler(&next_packet_timer, plc_timeout);
btstack_run_loop_add_timer(&next_packet_timer);
uint32_t time_ms = btstack_run_loop_get_time_ms();
if (btstack_time_delta(time_ms, last_samples_report_ms) > 1000){
last_samples_report_ms = time_ms;
printf("LC3 Frames: %4u - ", lc3_frames / num_channels);
uint8_t i;
for (i=0; i < num_channels; i++){
printf("%u ", frames_per_second[i]);
frames_per_second[i] = 0;
}
printf(" frames per second, dropped %u of %u\n", samples_dropped, samples_received);
if (samples_received >= sampling_frequency_hz){
printf("LC3 Frames: %4u - samples received %5u, played %5u, dropped %5u\n", lc3_frames, samples_received, samples_played, samples_dropped);
samples_received = 0;
samples_dropped = 0;
samples_played = 0;
}
last_packet_time_ms[cis_channel] = receive_time_ms;