static void alsa_write_pre_select(struct sched *s, struct task *t)
{
struct writer_node *wn = container_of(t, struct writer_node, task);
struct private_alsa_write_data *pad = wn->private_data;
static void alsa_write_pre_select(struct sched *s, struct task *t)
{
struct writer_node *wn = container_of(t, struct writer_node, task);
struct private_alsa_write_data *pad = wn->private_data;
snd_pcm_sframes_t avail, underrun;
int ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
if (ret == 0)
return;
snd_pcm_sframes_t avail, underrun;
int ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
if (ret == 0)
return;
/*
* Data is available to be written to the alsa handle. Compute number
* of milliseconds until next buffer underrun would occur.
/*
* Data is available to be written to the alsa handle. Compute number
* of milliseconds until next buffer underrun would occur.
bytes = btr_next_buffer(btrn, &data);
if (ret < 0 || bytes < wn->min_iqs) { /* eof */
assert(btr_no_parent(btrn));
bytes = btr_next_buffer(btrn, &data);
if (ret < 0 || bytes < wn->min_iqs) { /* eof */
assert(btr_no_parent(btrn));
get_btr_sample_rate(btrn, &val);
pad->sample_rate = val;
get_btr_channels(btrn, &val);
get_btr_sample_rate(btrn, &val);
pad->sample_rate = val;
get_btr_channels(btrn, &val);
PARA_INFO_LOG("%d channel(s), %dHz\n", pad->channels,
pad->sample_rate);
ret = alsa_init(pad, wn->conf);
PARA_INFO_LOG("%d channel(s), %dHz\n", pad->channels,
pad->sample_rate);
ret = alsa_init(pad, wn->conf);