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example/le_audio_demo_util_sink: also count samples receive via PLC

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This commit is contained in:
Matthias Ringwald 2023-10-31 15:18:44 +01:00
parent 65cfaa3907
commit 8dee162934
1 changed files with 20 additions and 9 deletions
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29
example/le_audio_demo_util_sink.c
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@ -95,6 +95,7 @@
static const char * le_audio_demo_sink_filename_wav;
static btstack_sample_rate_compensation_t sample_rate_compensation;
static uint32_t le_audio_demo_sink_received_samples;
static btstack_resample_t resample_instance;
static bool sink_receive_streaming;
@ -190,6 +191,10 @@ static void store_samples_in_ringbuffer(void){
// write wav samples
wav_writer_write_int16(le_audio_demo_sink_num_channels * le_audio_demo_sink_num_samples_per_frame, pcm);
#endif
// count for samplerate compensation
le_audio_demo_sink_received_samples += le_audio_demo_sink_num_samples_per_frame;
// store samples in playback buffer
samples_received += le_audio_demo_sink_num_samples_per_frame;
uint32_t resampled_frames = btstack_resample_block(&resample_instance, pcm, le_audio_demo_sink_num_samples_per_frame, pcm_resample);
@ -357,6 +362,9 @@ void le_audio_demo_util_sink_configure_general(uint8_t num_streams, uint8_t num_
// calc start threshold in bytes for PLAYBACK_START_MS
playback_start_threshold_bytes = (sampling_frequency_hz / 1000 * PLAYBACK_START_MS) * le_audio_demo_sink_num_channels * 2;
// sample rate compensation
le_audio_demo_sink_received_samples = 0;
// start playback
const btstack_audio_sink_t * sink = btstack_audio_sink_get_instance();
if (sink != NULL){
@ -490,19 +498,13 @@ void le_audio_demo_util_sink_receive(uint8_t stream_index, uint8_t *packet, uint
const btstack_audio_sink_t * sink = btstack_audio_sink_get_instance();
if( (sink != NULL) && (iso_sdu_length>0)) {
if( !sink_receive_streaming && playback_active ) {
btstack_sample_rate_compensation_init( &sample_rate_compensation, receive_time_ms,
le_audio_demo_sink_sampling_frequency_hz, FLOAT_TO_Q15(1.f) );
if (!sink_receive_streaming && playback_active) {
btstack_sample_rate_compensation_init(&sample_rate_compensation, receive_time_ms,
le_audio_demo_sink_sampling_frequency_hz, FLOAT_TO_Q15(1.f));
sink_receive_streaming = true;
}
if( sink_receive_streaming ) {
uint32_t resampling_factor = btstack_sample_rate_compensation_update( &sample_rate_compensation, receive_time_ms,
le_audio_demo_sink_num_samples_per_frame, sink->get_samplerate() );
btstack_resample_set_factor(&resample_instance, resampling_factor);
}
}
if (iso_sdu_length == 0) {
if (sink_receive_streaming){
// empty packet -> generate silence
@ -540,6 +542,15 @@ void le_audio_demo_util_sink_receive(uint8_t stream_index, uint8_t *packet, uint
store_samples_in_ringbuffer();
if( (sink != NULL) && (iso_sdu_length>0)) {
if( sink_receive_streaming ) {
uint32_t resampling_factor = btstack_sample_rate_compensation_update( &sample_rate_compensation, receive_time_ms,
le_audio_demo_sink_received_samples, sink->get_samplerate() );
btstack_resample_set_factor(&resample_instance, resampling_factor);
le_audio_demo_sink_received_samples = 0;
}
}
le_audio_demo_sink_lc3_frames++;
// PLC