mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-04 13:30:12 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

module-rtp: improve SSRC, seq and timestamp randomness

Browse source
This commit is contained in:
Wim Taymans 2023-02-22 11:54:27 +01:00
parent eca9bbf73b
commit 56d2e1e880
3 changed files with 33 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

24
src/modules/module-rtp-sink.c
View file

@ -361,7 +361,8 @@ static void stream_audio_process(struct impl *impl)
}
}
if (!impl->sync) {
pw_log_info("sync to timestamp %u ts_offset:%u", timestamp, impl->ts_offset);
pw_log_info("sync to timestamp:%u seq:%u ts_offset:%u SSRC:%u",
timestamp, impl->seq, impl->ts_offset, impl->ssrc);
impl->ring.readindex = impl->ring.writeindex = timestamp;
memset(impl->buffer, 0, BUFFER_SIZE);
impl->sync = true;
@ -533,7 +534,8 @@ static void stream_midi_process(void *data)
goto done;
if (!impl->sync) {
pw_log_info("sync to timestamp %u", timestamp);
pw_log_info("sync to timestamp:%u seq:%u ts_offset:%u SSRC:%u",
timestamp, impl->seq, impl->ts_offset, impl->ssrc);
impl->sync = true;
if (impl->apple_midi)
send_cmd(impl);
@ -890,6 +892,16 @@ static void copy_props(struct impl *impl, struct pw_properties *props, const cha
}
}
static uint32_t make_random(void)
{
int res;
uint32_t val;
do {
res = pw_getrandom(&val, sizeof(val), 0);
} while ((res == -1) && (errno == EINTR));
return val;
}
SPA_EXPORT
int pipewire__module_init(struct pw_impl_module *module, const char *args)
{
@ -1008,8 +1020,8 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
break;
}
impl->payload = 127;
impl->seq = rand();
impl->ssrc = rand();
impl->seq = make_random();
impl->ssrc = make_random();
str = pw_properties_get(props, "local.ifname");
impl->ifname = str ? strdup(str) : NULL;
@ -1021,7 +1033,7 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
goto out;
}
impl->dst_port = DEFAULT_PORT + ((uint32_t) (rand() % 512) << 1);
impl->dst_port = DEFAULT_PORT + ((uint32_t) (make_random() % 512) << 1);
impl->dst_port = pw_properties_get_uint32(props, "destination.port", impl->dst_port);
if ((str = pw_properties_get(props, "destination.ip")) == NULL)
str = DEFAULT_DESTINATION_IP;
@ -1036,7 +1048,7 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
impl->dscp = pw_properties_get_uint32(props, "net.dscp", DEFAULT_DSCP);
ts_offset = pw_properties_get_int64(props, "sess.ts-offset", DEFAULT_TS_OFFSET);
impl->ts_offset = ts_offset < 0 ? rand() : ts_offset;
impl->ts_offset = ts_offset < 0 ? make_random() : ts_offset;
str = pw_properties_get(props, "sess.ts-refclk");
impl->ts_refclk = str ? strdup(str) : NULL;