/*
* Send traffic from a scheduler instance due by 'now'.
* Return a pointer to the head of the queue.
*/
static struct mbuf *
serve_sched(struct mq *q, struct dn_sch_inst *si, uint64_t now)
{
struct mq def_q;
struct dn_schk *s = si->sched;
struct mbuf *m = NULL;
int delay_line_idle = (si->dline.mq.head == NULL);
int done, bw;
if (q == NULL) {
q = &def_q;
q->head = NULL;
}
bw = s->link.bandwidth;
si->kflags &= ~DN_ACTIVE;
if (bw > 0)
si->credit += (now - si->sched_time) * bw;
else
si->credit = 0;
si->sched_time = now;
done = 0;
while (si->credit >= 0 && (m = s->fp->dequeue(si)) != NULL) {
uint64_t len_scaled;
done++;
len_scaled = (bw == 0) ? 0 : hz *
(m->m_pkthdr.len * 8 + extra_bits(m, s));
si->credit -= len_scaled;
/* Move packet in the delay line */
dn_tag_get(m)->output_time = dn_cfg.curr_time + s->link.delay ;
mq_append(&si->dline.mq, m);
}
/*
* If credit >= 0 the instance is idle, mark time.
* Otherwise put back in the heap, and adjust the output
* time of the last inserted packet, m, which was too early.
*/
if (si->credit >= 0) {
si->idle_time = now;
} else {
uint64_t t;
KASSERT (bw > 0, ("bw=0 and credit<0 ?"));
t = div64(bw - 1 - si->credit, bw);
if (m)
dn_tag_get(m)->output_time += t;
si->kflags |= DN_ACTIVE;
heap_insert(&dn_cfg.evheap, now + t, si);
}
if (delay_line_idle && done)
transmit_event(q, &si->dline, now);
return q->head;
}
table_index = get_bits(&s->gb, 1+(w->quant<13) );
w->j_orient_vlc = &j_orient_vlc[w->quant<13][table_index];
}
assert(w->j_orient_vlc);
assert(w->j_orient_vlc->table);
return get_vlc2(&s->gb, w->j_orient_vlc->table, OR_VLC_BITS, OR_VLC_MTD);
}
#define extra_bits(eb) (eb)
#define extra_run (0xFF<<8)
#define extra_level (0x00<<8)
#define run_offset(r) ((r)<<16)
#define level_offset(l) ((l)<<24)
static const uint32_t ac_decode_table[]={
/*46*/ extra_bits(3) | extra_run | run_offset(16) | level_offset( 0),
/*47*/ extra_bits(3) | extra_run | run_offset(24) | level_offset( 0),
/*48*/ extra_bits(2) | extra_run | run_offset( 4) | level_offset( 1),
/*49*/ extra_bits(3) | extra_run | run_offset( 8) | level_offset( 1),
/*50*/ extra_bits(5) | extra_run | run_offset(32) | level_offset( 0),
/*51*/ extra_bits(4) | extra_run | run_offset(16) | level_offset( 1),
/*52*/ extra_bits(2) | extra_level | run_offset( 0) | level_offset( 4),
/*53*/ extra_bits(2) | extra_level | run_offset( 0) | level_offset( 8),
/*54*/ extra_bits(2) | extra_level | run_offset( 0) | level_offset(12),
/*55*/ extra_bits(3) | extra_level | run_offset( 0) | level_offset(16),
/*56*/ extra_bits(3) | extra_level | run_offset( 0) | level_offset(24),
/*57*/ extra_bits(2) | extra_level | run_offset( 1) | level_offset( 3),
/*58*/ extra_bits(3) | extra_level | run_offset( 1) | level_offset( 7),