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v4l2: add v4l2 endpoints

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Monitor and add endpoints for the v4l2 nodes.
This commit is contained in:
Wim Taymans 2019-12-16 13:39:42 +01:00
parent f06fc5a62b
commit 3c846fbb1d
5 changed files with 709 additions and 11 deletions
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74
src/examples/media-session/v4l2-monitor.c
View file

@ -36,6 +36,7 @@
#include <spa/utils/names.h>
#include <spa/param/props.h>
#include <spa/debug/dict.h>
#include <spa/pod/builder.h>
#include "pipewire/pipewire.h"
@ -59,14 +60,21 @@ struct device {
struct impl *impl;
struct spa_list link;
uint32_t id;
uint32_t device_id;
int priority;
int profile;
struct pw_properties *props;
struct spa_handle *handle;
struct pw_proxy *proxy;
struct spa_device *device;
struct spa_hook device_listener;
struct sm_device *sdevice;
struct spa_hook listener;
unsigned int appeared:1;
struct spa_list node_list;
};
@ -124,6 +132,8 @@ static struct node *v4l2_create_node(struct device *dev, uint32_t id,
node->props = pw_properties_new_dict(info->props);
pw_properties_setf(node->props, PW_KEY_DEVICE_ID, "%d", dev->device_id);
str = pw_properties_get(dev->props, SPA_KEY_DEVICE_NAME);
if (str == NULL)
str = pw_properties_get(dev->props, SPA_KEY_DEVICE_NICK);
@ -259,6 +269,49 @@ static int v4l2_update_device_props(struct device *dev)
return 0;
}
static void set_profile(struct device *device, int index)
{
char buf[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
pw_log_debug("%p: set profile %d id:%d", device, index, device->device_id);
device->profile = index;
if (device->device_id != 0) {
spa_device_set_param(device->device,
SPA_PARAM_Profile, 0,
spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_ParamProfile, SPA_PARAM_Profile,
SPA_PARAM_PROFILE_index, SPA_POD_Int(index)));
}
}
static void device_update(void *data)
{
struct device *device = data;
pw_log_debug("device %p appeared %d %d", device, device->appeared, device->profile);
if (device->appeared)
return;
device->device_id = device->sdevice->obj.id;
device->appeared = true;
spa_device_add_listener(device->device,
&device->device_listener,
&v4l2_device_events, device);
set_profile(device, 1);
sm_object_sync_update(&device->sdevice->obj);
}
static const struct sm_object_events device_events = {
SM_VERSION_OBJECT_EVENTS,
.update = device_update,
};
static struct device *v4l2_create_device(struct impl *impl, uint32_t id,
const struct spa_device_object_info *info)
{
@ -302,18 +355,19 @@ static struct device *v4l2_create_device(struct impl *impl, uint32_t id,
dev->props = pw_properties_new_dict(info->props);
v4l2_update_device_props(dev);
dev->proxy = sm_media_session_export(impl->session,
info->type, &dev->props->dict, dev->device, 0);
if (dev->proxy == NULL) {
dev->sdevice = sm_media_session_export_device(impl->session,
&dev->props->dict, dev->device);
if (dev->sdevice == NULL) {
res = -errno;
goto clean_device;
}
sm_object_add_listener(&dev->sdevice->obj,
&dev->listener,
&device_events, dev);
spa_list_init(&dev->node_list);
spa_device_add_listener(dev->device,
&dev->device_listener, &v4l2_device_events, dev);
spa_list_append(&impl->device_list, &dev->link);
return dev;
@ -331,8 +385,10 @@ static void v4l2_remove_device(struct impl *impl, struct device *dev)
{
pw_log_debug("remove device %u", dev->id);
spa_list_remove(&dev->link);
spa_hook_remove(&dev->listener);
spa_hook_remove(&dev->device_listener);
pw_proxy_destroy(dev->proxy);
if (dev->sdevice)
sm_object_destroy(&dev->sdevice->obj);
pw_unload_spa_handle(dev->handle);
free(dev);
}