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demux: avoid unnecessary wakeups 

If a packet is appended to a stream, and there were already packets
queued, nothing about the state changed, as far as the user (i.e. the
player) is concerned. Thus no wakeup is needed.

The pthread_cond_signal() call following this is not interesting - it
will simply be a NOP if there are actually no waiters.
This commit is contained in:
wm4 2014-08-24 12:41:07 +02:00
parent 2c114db2f1
commit c31a91230d
1 changed files with 1 additions and 1 deletions
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2
demux/demux.c
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@ -318,7 +318,7 @@ int demux_add_packet(struct sh_stream *stream, demux_packet_t *dp)
"[num=%zd size=%zd]\n", stream_type_name(stream->type),
dp->len, dp->pts, dp->dts, dp->pos, ds->packs, ds->bytes);
if (ds->in->wakeup_cb)
if (ds->in->wakeup_cb && !ds->head->next)
ds->in->wakeup_cb(ds->in->wakeup_cb_ctx);
pthread_cond_signal(&in->wakeup);
pthread_mutex_unlock(&in->lock);