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libosmo-netif
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osmux: add osmux_tx_sched to reconstruct the timing of RTP messages 

This function schedules the transmission of a RTP message that was
obtained from one osmux batch. It takes the time (in microseconds)
after which the message should be transmitted.
This commit is contained in:
Pablo Neira Ayuso 2012-07-19 11:08:21 +02:00
parent d3c21b3cad
commit 8ba490fd96
2 changed files with 44 additions and 0 deletions
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2
include/osmocom/netif/osmux.h
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@ -65,4 +65,6 @@ void osmux_xfrm_input_deliver(struct osmux_in_handle *h);
struct msgb *osmux_xfrm_output(struct osmux_hdr *osmuxh, struct osmux_out_handle *h);
struct osmux_hdr *osmux_xfrm_output_pull(struct msgb *msg);
void osmux_tx_sched(struct msgb *msg, struct timeval *when, void (*tx_cb)(struct msgb *msg, void *data), void *data);
#endif

42
src/osmux.c
View File

@ -14,6 +14,7 @@
#include <osmocom/core/msgb.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/select.h>
#include <osmocom/core/talloc.h>
#include <osmocom/netif/amr.h>
#include <osmocom/netif/rtp.h>
@ -218,3 +219,44 @@ void osmux_xfrm_input_init(struct osmux_in_handle *h)
batch.timer.cb = osmux_batch_timer_expired;
batch.timer.data = h;
}
struct osmux_tx_handle {
struct osmo_timer_list timer;
struct msgb *msg;
void (*tx_cb)(struct msgb *msg, void *data);
void *data;
};
static void osmux_tx_cb(void *data)
{
struct osmux_tx_handle *h = data;
h->tx_cb(h->msg, h->data);
talloc_free(h);
}
void osmux_tx_sched(struct msgb *msg, struct timeval *when,
void (*tx_cb)(struct msgb *msg, void *data), void *data)
{
struct osmux_tx_handle *h;
/* send it now */
if (when->tv_sec == 0 && when->tv_usec == 0) {
tx_cb(msg, data);
return;
}
/* ... otherwise schedule transmission */
h = talloc_zero(NULL, struct osmux_tx_handle);
if (h == NULL)
return;
h->msg = msg;
h->tx_cb = tx_cb;
h->data = data;
h->timer.cb = osmux_tx_cb;
h->timer.data = h;
osmo_timer_schedule(&h->timer, when->tv_sec, when->tv_usec);
}