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Fix: ts for audio frame matches the RTP ts of the 1st pkt #1243

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Fix: ts for audio frame matches the RTP ts of the 1st pkt #1243

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2 changes: 2 additions & 0 deletions lib/src/st2110/st_header.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1019,6 +1019,8 @@ struct st_rx_audio_session_impl {
int st30_pkt_idx; /* pkt index in current frame */
int latest_seq_id; /* latest seq id */

uint32_t first_pkt_rtp_ts; /* rtp time stamp for the first pkt */

uint32_t tmstamp;
size_t frame_recv_size;

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8 changes: 6 additions & 2 deletions lib/src/st2110/st_rx_audio_session.c
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Expand Up @@ -262,6 +262,10 @@ static int rx_audio_session_handle_frame_pkt(struct mtl_main_impl* impl,
uint8_t payload_type = rtp->payload_type;
uint32_t pkt_len = mbuf->data_len - sizeof(struct st_rfc3550_audio_hdr);

if (s->st30_pkt_idx == 0) {
s->first_pkt_rtp_ts = tmstamp;
}

if (ops->payload_type && (payload_type != ops->payload_type)) {
dbg("%s(%d,%d), get payload_type %u but expect %u\n", __func__, s->idx, s_port,
payload_type, ops->payload_type);
Expand Down Expand Up @@ -359,11 +363,11 @@ static int rx_audio_session_handle_frame_pkt(struct mtl_main_impl* impl,
}

meta->tfmt = ST10_TIMESTAMP_FMT_MEDIA_CLK;
meta->timestamp = tmstamp;
meta->timestamp = s->first_pkt_rtp_ts;
meta->fmt = ops->fmt;
meta->sampling = ops->sampling;
meta->channel = ops->channel;
meta->rtp_timestamp = tmstamp;
meta->rtp_timestamp = s->first_pkt_rtp_ts;
meta->frame_recv_size = s->frame_recv_size;

MT_USDT_ST30_RX_FRAME_AVAILABLE(s->mgr->idx, s->idx, frame->idx, frame->addr, tmstamp,
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