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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-09-03 17:44:00 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-09-07 00:30:04 +0300
commit52660f2b13dd9f1032de5e50c416845def66a838 (patch)
tree129d3bdf6a55c5314b4a6c6944c41858475c95f0 /src/libcamera
parentad8af50d86c931543590ddb7f5b4490fdfc227f4 (diff)
pipeline: uvcvideo: Move camera ID generation to UVCCameraData class
Move the camera ID generation to UVCCameraData, and cache the ID in that class. This will be useful to access the ID in multiple locations, such as when printing error messages. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Christian Rauch <Rauch.Christian@gmx.de>
Diffstat (limited to 'src/libcamera')
-rw-r--r--src/libcamera/pipeline/uvcvideo/uvcvideo.cpp149
1 files changed, 78 insertions, 71 deletions
diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
index 2ae640a3..22b67faf 100644
--- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
@@ -46,8 +46,15 @@ public:
ControlInfoMap::Map *ctrls);
void bufferReady(FrameBuffer *buffer);
+ const std::string &id() const { return id_; }
+
std::unique_ptr<V4L2VideoDevice> video_;
Stream stream_;
+
+private:
+ bool generateId();
+
+ std::string id_;
};
class UVCCameraConfiguration : public CameraConfiguration
@@ -81,8 +88,6 @@ public:
bool match(DeviceEnumerator *enumerator) override;
private:
- std::string generateId(const UVCCameraData *data);
-
int processControl(ControlList *controls, unsigned int id,
const ControlValue &value);
int processControls(UVCCameraData *data, Request *request);
@@ -384,69 +389,6 @@ int PipelineHandlerUVC::queueRequestDevice(Camera *camera, Request *request)
return 0;
}
-std::string PipelineHandlerUVC::generateId(const UVCCameraData *data)
-{
- const std::string path = data->video_->devicePath();
-
- /* Create a controller ID from first device described in firmware. */
- std::string controllerId;
- std::string searchPath = path;
- while (true) {
- std::string::size_type pos = searchPath.rfind('/');
- if (pos <= 1) {
- LOG(UVC, Error) << "Can not find controller ID";
- return {};
- }
-
- searchPath = searchPath.substr(0, pos);
-
- controllerId = sysfs::firmwareNodePath(searchPath);
- if (!controllerId.empty())
- break;
- }
-
- /*
- * Create a USB ID from the device path which has the known format:
- *
- * path = bus, "-", ports, ":", config, ".", interface ;
- * bus = number ;
- * ports = port, [ ".", ports ] ;
- * port = number ;
- * config = number ;
- * interface = number ;
- *
- * Example: 3-2.4:1.0
- *
- * The bus is not guaranteed to be stable and needs to be stripped from
- * the USB ID. The final USB ID is built up of the ports, config and
- * interface properties.
- *
- * Example 2.4:1.0.
- */
- std::string usbId = utils::basename(path.c_str());
- usbId = usbId.substr(usbId.find('-') + 1);
-
- /* Creata a device ID from the USB devices vendor and product ID. */
- std::string deviceId;
- for (const char *name : { "idVendor", "idProduct" }) {
- std::ifstream file(path + "/../" + name);
-
- if (!file.is_open())
- return {};
-
- std::string value;
- std::getline(file, value);
- file.close();
-
- if (!deviceId.empty())
- deviceId += ":";
-
- deviceId += value;
- }
-
- return controllerId + "-" + usbId + "-" + deviceId;
-}
-
bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
{
MediaDevice *media;
@@ -462,12 +404,7 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
return false;
/* Create and register the camera. */
- std::string id = generateId(data.get());
- if (id.empty()) {
- LOG(UVC, Error) << "Failed to generate camera ID";
- return false;
- }
-
+ std::string id = data->id();
std::set<Stream *> streams{ &data->stream_ };
std::shared_ptr<Camera> camera =
Camera::create(std::move(data), id, streams);
@@ -502,6 +439,12 @@ int UVCCameraData::init(MediaDevice *media)
video_->bufferReady.connect(this, &UVCCameraData::bufferReady);
+ /* Generate the camera ID. */
+ if (!generateId()) {
+ LOG(UVC, Error) << "Failed to generate camera ID";
+ return -EINVAL;
+ }
+
properties_.set(properties::Model, utils::toAscii(media->model()));
/*
@@ -563,6 +506,70 @@ int UVCCameraData::init(MediaDevice *media)
return 0;
}
+bool UVCCameraData::generateId()
+{
+ const std::string path = video_->devicePath();
+
+ /* Create a controller ID from first device described in firmware. */
+ std::string controllerId;
+ std::string searchPath = path;
+ while (true) {
+ std::string::size_type pos = searchPath.rfind('/');
+ if (pos <= 1) {
+ LOG(UVC, Error) << "Can not find controller ID";
+ return false;
+ }
+
+ searchPath = searchPath.substr(0, pos);
+
+ controllerId = sysfs::firmwareNodePath(searchPath);
+ if (!controllerId.empty())
+ break;
+ }
+
+ /*
+ * Create a USB ID from the device path which has the known format:
+ *
+ * path = bus, "-", ports, ":", config, ".", interface ;
+ * bus = number ;
+ * ports = port, [ ".", ports ] ;
+ * port = number ;
+ * config = number ;
+ * interface = number ;
+ *
+ * Example: 3-2.4:1.0
+ *
+ * The bus is not guaranteed to be stable and needs to be stripped from
+ * the USB ID. The final USB ID is built up of the ports, config and
+ * interface properties.
+ *
+ * Example 2.4:1.0.
+ */
+ std::string usbId = utils::basename(path.c_str());
+ usbId = usbId.substr(usbId.find('-') + 1);
+
+ /* Creata a device ID from the USB devices vendor and product ID. */
+ std::string deviceId;
+ for (const char *name : { "idVendor", "idProduct" }) {
+ std::ifstream file(path + "/../" + name);
+
+ if (!file.is_open())
+ return false;
+
+ std::string value;
+ std::getline(file, value);
+ file.close();
+
+ if (!deviceId.empty())
+ deviceId += ":";
+
+ deviceId += value;
+ }
+
+ id_ = controllerId + "-" + usbId + "-" + deviceId;
+ return true;
+}
+
void UVCCameraData::addControl(uint32_t cid, const ControlInfo &v4l2Info,
ControlInfoMap::Map *ctrls)
{

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