diff options
| -rw-r--r-- | src/libcamera/include/v4l2_subdevice.h | 5 | ||||
| -rw-r--r-- | src/libcamera/v4l2_subdevice.cpp | 22 |
2 files changed, 27 insertions, 0 deletions
diff --git a/src/libcamera/include/v4l2_subdevice.h b/src/libcamera/include/v4l2_subdevice.h index f42cccab..ee7c7246 100644 --- a/src/libcamera/include/v4l2_subdevice.h +++ b/src/libcamera/include/v4l2_subdevice.h @@ -18,6 +18,8 @@ namespace libcamera { +class MediaDevice; + struct V4L2SubdeviceFormat { uint32_t mbus_code; uint32_t width; @@ -48,6 +50,9 @@ public: int getFormat(unsigned int pad, V4L2SubdeviceFormat *format); int setFormat(unsigned int pad, V4L2SubdeviceFormat *format); + static V4L2Subdevice *fromEntityName(const MediaDevice *media, + const std::string &entity); + protected: std::string logPrefix() const; diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp index 10925f9f..0abeaa20 100644 --- a/src/libcamera/v4l2_subdevice.cpp +++ b/src/libcamera/v4l2_subdevice.cpp @@ -16,6 +16,7 @@ #include "geometry.h" #include "log.h" +#include "media_device.h" #include "media_object.h" #include "v4l2_subdevice.h" @@ -313,6 +314,27 @@ int V4L2Subdevice::setFormat(unsigned int pad, V4L2SubdeviceFormat *format) return 0; } +/** + * \brief Create a new video subdevice instance from \a entity in media device + * \a media + * \param[in] media The media device where the entity is registered + * \param[in] entity The media entity name + * + * Releasing memory of the newly created instance is responsibility of the + * caller of this function. + * + * \return A newly created V4L2Subdevice on success, nullptr otherwise + */ +V4L2Subdevice *V4L2Subdevice::fromEntityName(const MediaDevice *media, + const std::string &entity) +{ + MediaEntity *mediaEntity = media->getEntityByName(entity); + if (!mediaEntity) + return nullptr; + + return new V4L2Subdevice(mediaEntity); +} + std::string V4L2Subdevice::logPrefix() const { return "'" + entityName() + "'"; |