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bluetooth: Implement reading SO_TIMESTAMP for A2DP source

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This commit is contained in:
Pali Rohár 2019-05-04 08:54:29 +02:00 • committed by Tanu Kaskinen
parent cdcb01889c
commit 3f13af508d
1 changed files with 31 additions and 2 deletions
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33
src/modules/bluetooth/module-bluez5-device.c
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@ -548,13 +548,29 @@ static int a2dp_process_push(struct userdata *u) {
a2dp_prepare_decoder_buffer(u);
for (;;) {
uint8_t aux[1024];
struct iovec iov;
struct cmsghdr *cm;
struct msghdr m;
bool found_tstamp = false;
pa_usec_t tstamp;
uint8_t *ptr;
ssize_t l;
size_t processed;
l = pa_read(u->stream_fd, u->decoder_buffer, u->decoder_buffer_size, &u->stream_write_type);
pa_zero(m);
pa_zero(aux);
pa_zero(iov);
m.msg_iov = &iov;
m.msg_iovlen = 1;
m.msg_control = aux;
m.msg_controllen = sizeof(aux);
iov.iov_base = u->decoder_buffer;
iov.iov_len = u->decoder_buffer_size;
l = recvmsg(u->stream_fd, &m, 0);
if (l <= 0) {
@ -574,8 +590,21 @@ static int a2dp_process_push(struct userdata *u) {
pa_assert((size_t) l <= u->decoder_buffer_size);
/* TODO: get timestamp from rtp */
for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm)) {
if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SO_TIMESTAMP) {
struct timeval *tv = (struct timeval*) CMSG_DATA(cm);
pa_rtclock_from_wallclock(tv);
tstamp = pa_timeval_load(tv);
found_tstamp = true;
break;
}
}
if (!found_tstamp) {
/* pa_log_warn("Couldn't find SO_TIMESTAMP data in auxiliary recvmsg() data!"); */
PA_ONCE_BEGIN {
pa_log_warn("Couldn't find SO_TIMESTAMP data in auxiliary recvmsg() data!");
} PA_ONCE_END;
tstamp = pa_rtclock_now();
}