CHN_EMPTY
if (!CHN_EMPTY(c, children)) {
if (CHN_EMPTY(c, children))
nrun = !CHN_EMPTY(c, children.busy);
if (CHN_EMPTY(c, children.busy)) {
if (snd_verbose > 3 && CHN_EMPTY(c, children))
if (CHN_EMPTY(d, channels.pcm.opened)) {
} else if (!CHN_EMPTY(d, channels.pcm.opened)) {
while (!CHN_EMPTY(d, channels.pcm)) {
if (!PCM_REGISTERED(d) || CHN_EMPTY(d, channels.pcm)) {
if (CHN_EMPTY(parent, children)) {
if (CHN_EMPTY(d, channels.pcm)) {