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spa: libcamera: consume the device numbers libcamera property

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Pass on the device numbers property of libcamera to session managers, with they
are better equipped to filter the camera/video devices across v4l2 and libcamera.
This commit is contained in:
Ashok Sidipotu 2023-05-02 16:49:40 +05:30 • committed by Wim Taymans
parent 983d34f344
commit 79518d13ae
2 changed files with 29 additions and 2 deletions
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3
spa/include/spa/monitor/device.h
View file

@ -275,7 +275,8 @@ struct spa_device_methods {
#define SPA_KEY_DEVICE_PROFILE_SET "device.profile-set" /**< profile set for the device */
#define SPA_KEY_DEVICE_STRING "device.string" /**< device string in the underlying
* layer's format. E.g. "surround51:0" */
#define SPA_KEY_DEVICE_DEVIDS "device.devids" /**< space separated list of device ids (dev_t) of the
* underlying device(s) if applicable */
/**
* \}
*/

28
spa/plugins/libcamera/libcamera-device.cpp
View file

@ -29,6 +29,7 @@
#include <libcamera/camera.h>
#include <libcamera/property_ids.h>
#include <libcamera/base/span.h>
using namespace libcamera;
@ -55,6 +56,17 @@ struct impl {
}
static const libcamera::Span<const int64_t> cameraDevice(
const Camera *camera)
{
const ControlList &props = camera->properties();
if (auto devices = props.get(properties::SystemDevices))
return devices.value();
return {};
}
static std::string cameraModel(const Camera *camera)
{
const ControlList &props = camera->properties();
@ -90,7 +102,8 @@ static int emit_info(struct impl *impl, bool full)
uint32_t n_items = 0;
struct spa_device_info info;
struct spa_param_info params[2];
char path[256], model[256], name[256];
char path[256], model[256], name[256], devices_str[128];
struct spa_strbuf buf;
info = SPA_DEVICE_INFO_INIT();
@ -111,6 +124,19 @@ static int emit_info(struct impl *impl, bool full)
ADD_ITEM(SPA_KEY_DEVICE_DESCRIPTION, model);
snprintf(name, sizeof(name), "libcamera_device.%s", impl->device_id.c_str());
ADD_ITEM(SPA_KEY_DEVICE_NAME, name);
auto device_numbers = cameraDevice(impl->camera.get());
if (!device_numbers.empty()) {
spa_strbuf_init(&buf, devices_str, sizeof(devices_str));
/* created a space separated string of all the device numbers */
for (int64_t device_number : device_numbers)
spa_strbuf_append(&buf, "%" PRId64 " ", device_number);
ADD_ITEM(SPA_KEY_DEVICE_DEVIDS, devices_str);
}
#undef ADD_ITEM
dict = SPA_DICT_INIT(items, n_items);