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alsa: adjust latency based on buffer size

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This commit is contained in:
Wim Taymans 2018-04-30 09:27:20 +02:00
parent d5e658e8f9
commit b8a37381da
3 changed files with 27 additions and 10 deletions
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8
spa/plugins/alsa/alsa-sink.c
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@ -33,7 +33,7 @@
#define CHECK_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) == 0)
static const char default_device[] = "hw:0";
static const uint32_t default_min_latency = 1024;
static const uint32_t default_min_latency = 64;
static const uint32_t default_max_latency = 1024;
static void reset_props(struct props *props)
@ -488,6 +488,7 @@ impl_node_port_use_buffers(struct spa_node *node,
for (i = 0; i < n_buffers; i++) {
struct buffer *b = &this->buffers[i];
struct spa_data *d = buffers[i]->datas;
uint32_t type;
b->outbuf = buffers[i];
@ -495,13 +496,14 @@ impl_node_port_use_buffers(struct spa_node *node,
b->h = spa_buffer_find_meta(b->outbuf, this->type.meta.Header);
type = buffers[i]->datas[0].type;
type = d[0].type;
if ((type == this->type.data.MemFd ||
type == this->type.data.DmaBuf ||
type == this->type.data.MemPtr) && buffers[i]->datas[0].data == NULL) {
type == this->type.data.MemPtr) && d[0].data == NULL) {
spa_log_error(this->log, NAME " %p: need mapped memory", this);
return -EINVAL;
}
this->threshold = d[0].maxsize / this->frame_size;
}
this->n_buffers = n_buffers;