mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-03-24 04:43:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

example/a2dp_sink: use new sbc decoder api

Browse Source
This commit is contained in:
Matthias Ringwald 2023-11-15 08:44:34 +01:00
parent 68d44bcbdd
commit afa547f28a
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
example/a2dp_sink_demo.c
View File

@ -68,6 +68,7 @@
#include <string.h>
#include "btstack.h"
#include "btstack_resample.h"
//#define AVRCP_BROWSING_ENABLED
@ -121,8 +122,8 @@ static char * wav_filename = "a2dp_sink_demo.wav";
#endif
// SBC Decoder for WAV file or live playback
static btstack_sbc_decoder_state_t state;
static btstack_sbc_mode_t mode = SBC_MODE_STANDARD;
static const btstack_sbc_decoder_t * sbc_decoder_instance;
static btstack_sbc_decoder_bluedroid_t sbc_decoder_context;
// ring buffer for SBC Frames
// below 30: add samples, 30-40: fine, above 40: drop samples
@ -397,7 +398,7 @@ static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){
// decode frame
uint8_t sbc_frame[MAX_SBC_FRAME_SIZE];
btstack_ring_buffer_read(&sbc_frame_ring_buffer, sbc_frame, sbc_frame_size, &bytes_read);
btstack_sbc_decoder_process_data(&state, 0, sbc_frame, sbc_frame_size);
sbc_decoder_instance->decode_signed_16(&sbc_decoder_context, 0, sbc_frame, sbc_frame_size);
}
#ifdef STORE_TO_WAV_FILE
@ -442,7 +443,8 @@ static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channe
static int media_processing_init(media_codec_configuration_sbc_t * configuration){
if (media_initialized) return 0;
btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL);
sbc_decoder_instance = btstack_sbc_decoder_bluedroid_init_instance(&sbc_decoder_context);
sbc_decoder_instance->configure(&sbc_decoder_context, SBC_MODE_STANDARD, handle_pcm_data, NULL);
#ifdef STORE_TO_WAV_FILE
wav_writer_open(wav_filename, configuration->num_channels, configuration->sampling_frequency);
@ -507,9 +509,9 @@ static void media_processing_close(void){
#ifdef STORE_TO_WAV_FILE
wav_writer_close();
uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr;
uint32_t total_frames_nr = sbc_decoder_context.good_frames_nr + sbc_decoder_context.bad_frames_nr + sbc_decoder_context.zero_frames_nr;
printf("WAV Writer: Decoding done. Processed %u SBC frames:\n - %d good\n - %d bad\n", total_frames_nr, state.good_frames_nr, total_frames_nr - state.good_frames_nr);
printf("WAV Writer: Decoding done. Processed %u SBC frames:\n - %d good\n - %d bad\n", total_frames_nr, sbc_decoder_context.good_frames_nr, total_frames_nr - sbc_decoder_context.good_frames_nr);
printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename);
#endif
@ -548,11 +550,10 @@ static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16
const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance();
// process data right away if there's no audio implementation active, e.g. on posix systems to store as .wav
if (!audio){
btstack_sbc_decoder_process_data(&state, 0, packet_begin, packet_length);
sbc_decoder_instance->decode_signed_16(&sbc_decoder_context, 0, packet_begin, packet_length);
return;
}
// store sbc frame size for buffer management
sbc_frame_size = packet_length / sbc_header.num_frames;
int status = btstack_ring_buffer_write(&sbc_frame_ring_buffer, packet_begin, packet_length);