40  * @param stream The TX stream to generate and fill the sine wave for
42 static void fill_audio_buf_sin(struct tx_stream *stream)  in fill_audio_buf_sin()  argument
45 		(stream->lc3_tx.frame_duration_us * stream->lc3_tx.freq_hz) / USEC_PER_SEC;  in fill_audio_buf_sin()
46 	const int sine_period_samples = stream->lc3_tx.freq_hz / AUDIO_TONE_FREQUENCY_HZ;  in fill_audio_buf_sin()
56 static int extract_lc3_config(struct tx_stream *stream)  in extract_lc3_config()  argument
58 	const struct bt_audio_codec_cfg *codec_cfg = stream->bap_stream->codec_cfg;  in extract_lc3_config()
59 	struct stream_lc3_tx *lc3_tx = &stream->lc3_tx;  in extract_lc3_config()
133 static bool encode_frame(struct tx_stream *stream, uint8_t index, struct net_buf *out_buf)  in encode_frame()  argument
135 	const uint16_t octets_per_frame = stream->lc3_tx.octets_per_frame;  in encode_frame()
139 	fill_audio_buf_sin(stream);  in encode_frame()
141 	lc3_ret = lc3_encode(stream->lc3_tx.encoder, LC3_PCM_FORMAT_S16, audio_buf, 1,  in encode_frame()
154 static bool encode_frame_block(struct tx_stream *stream, struct net_buf *out_buf)  in encode_frame_block()  argument
156 	for (uint8_t i = 0U; i < stream->lc3_tx.chan_cnt; i++) {  in encode_frame_block()
160 		if (!encode_frame(stream, i, out_buf)) {  in encode_frame_block()
168 void stream_lc3_add_data(struct tx_stream *stream, struct net_buf *buf)  in stream_lc3_add_data()  argument
170 	for (uint8_t i = 0U; i < stream->lc3_tx.frame_blocks_per_sdu; i++) {  in stream_lc3_add_data()
171 		if (!encode_frame_block(stream, buf)) {  in stream_lc3_add_data()
177 int stream_lc3_init(struct tx_stream *stream)  in stream_lc3_init()  argument
181 	err = extract_lc3_config(stream);  in stream_lc3_init()
183 		memset(&stream->lc3_tx, 0, sizeof(stream->lc3_tx));  in stream_lc3_init()
190 	fill_audio_buf_sin(stream);  in stream_lc3_init()
193 	stream->lc3_tx.encoder =  in stream_lc3_init()
194 		lc3_setup_encoder(stream->lc3_tx.frame_duration_us, stream->lc3_tx.freq_hz, 0,  in stream_lc3_init()
195 				  &stream->lc3_tx.encoder_mem);  in stream_lc3_init()
197 	if (stream->lc3_tx.encoder == NULL) {  in stream_lc3_init()
200 		memset(&stream->lc3_tx, 0, sizeof(stream->lc3_tx));  in stream_lc3_init()