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v4l2: implement latency get and set

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This commit is contained in:
Wim Taymans 2021-06-24 16:05:31 +02:00
parent 7ef78b4464
commit 679df3f9d9
1 changed files with 33 additions and 12 deletions
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45
spa/plugins/v4l2/v4l2-source.c
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@ -158,7 +158,7 @@ struct impl {
struct spa_io_position *position;
struct spa_io_clock *clock;
struct spa_latency_info latency;
struct spa_latency_info latency[2];
};
#define CHECK_PORT(this,direction,port_id) ((direction) == SPA_DIRECTION_OUTPUT && (port_id) == 0)
@ -574,8 +574,8 @@ static int impl_node_port_enum_params(void *object, int seq,
break;
case SPA_PARAM_Latency:
switch (result.index) {
case 0:
param = spa_latency_build(&b, id, &this->latency);
case 0: case 1:
param = spa_latency_build(&b, id, &this->latency[result.index]);
break;
default:
return 0;
@ -596,14 +596,11 @@ static int impl_node_port_enum_params(void *object, int seq,
return 0;
}
static int port_set_format(void *object,
enum spa_direction direction, uint32_t port_id,
static int port_set_format(struct impl *this, struct port *port,
uint32_t flags,
const struct spa_pod *format)
{
struct impl *this = object;
struct spa_video_info info;
struct port *port = GET_PORT(this, direction, port_id);
int res;
if (port->have_format) {
@ -678,15 +675,38 @@ static int impl_node_port_set_param(void *object,
uint32_t id, uint32_t flags,
const struct spa_pod *param)
{
int res;
struct impl *this = object;
struct port *port;
spa_return_val_if_fail(object != NULL, -EINVAL);
spa_return_val_if_fail(CHECK_PORT(object, direction, port_id), -EINVAL);
if (id == SPA_PARAM_Format) {
return port_set_format(object, direction, port_id, flags, param);
port = GET_PORT(this, direction, port_id);
switch (id) {
case SPA_PARAM_Latency:
{
struct spa_latency_info info;
if ((res = spa_latency_parse(param, &info)) < 0)
return res;
if (direction == info.direction)
return -EINVAL;
this->latency[info.direction] = info;
port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
port->params[PORT_Latency].flags ^= SPA_PARAM_INFO_SERIAL;
emit_port_info(this, port, false);
break;
}
else
return -ENOENT;
case SPA_PARAM_Format:
res = port_set_format(object, port, flags, param);
break;
default:
res = -ENOENT;
}
return res;
}
static int impl_node_port_use_buffers(void *object,
@ -963,7 +983,8 @@ impl_init(const struct spa_handle_factory *factory,
&impl_node, this);
spa_hook_list_init(&this->hooks);
this->latency = SPA_LATENCY_INFO(SPA_DIRECTION_OUTPUT);
this->latency[SPA_DIRECTION_INPUT] = SPA_LATENCY_INFO(SPA_DIRECTION_INPUT);
this->latency[SPA_DIRECTION_OUTPUT] = SPA_LATENCY_INFO(SPA_DIRECTION_OUTPUT);
this->info_all = SPA_NODE_CHANGE_MASK_FLAGS |
SPA_NODE_CHANGE_MASK_PROPS |