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Android/カメラ/処理の流れ

Android/カメラ/処理の流れ/カメラ特性の取得

Top / Android / カメラ / 処理の流れ / カメラ特性の取得

流れ

CameraCharacteristics = CameraManager.getCameraCharacteristics(cameraId);

• A:CameraMetadataNative info = CameraService.getCameraCharacteristics(id);
• characteristics = new CameraCharacteristics(info);

A:CameraService::getCameraCharacteristics(id, CameraMetadata)

• B:CameraService::getCameraInfo(camera_info)
• CameraMetadata = (camera_metadata_t)camera_info.static_camera_characteristics?

B:CameraService::getCameraInfo(camera_info)

• CameraModule::getCameraInfo

CameraModule::getCameraInfo

• camera_module_t.get_camera_info = qcamera::QCamera2Factory::get_camera_info

QCamera2Factory::get_camera_info(id, camera_info);

• QCamera2Factory::getCameraInfo(id, camera_info)
• QCamera3HardwareInterface::getCamInfo(id, camera_info)

QCamera3HardwareInterface::getCamInfo

• D:QCamera3HardwareInterface::initCapabilities(id)
• E:QCamera3HardwareInterface::initStaticMetadata(id)
  • camera_info.static_camera_characteristics? = gStaticMetadata?[cameraId];

D:QCamera3HardwareInterface::initCapabilities(id)

• (cam_capability_t)gCamCapability?にキャパビリティを格納する
  • camera_open(id, mm_camera_vtbl_t)
  • (mm_camera_vtbl_t)cameraHandle->(mm_camera_ops_t)ops->map_buf(=mm_camera_intf_map_buf(CAM_MAPPING_BUF_TYPE_CAPABILITY?))
  • (mm_camera_vtbl_t)cameraHandle->(mm_camera_ops_t)ops->query_capability((uint32_t)mm_camera_vtbl_t.camera_handle?) (=mm_camera_intf_query_capability)

camera_open(id, mm_camera_vtbl_t)

• (mm_camera_obj_t?)cam_obj->vtbl.ops = &(mm_camera_ops_t)mm_camera_ops?;
• mm_camera_ops.query_capability? = mm_camera_intf_query_capability,

mm_camera_intf_map_buf

• CAM_MAPPING_BUF_TYPE_CAPABILITY?をマッピングしてるけどよくわからん

mm_camera_intf_query_capability(uint32_t camera_handle)

• mm_camera_query_capability(mm_camera_obj_t?)

mm_camera_query_capability(mm_camera_obj_t?)

• ioctl(my_obj->ctrl_fd, VIDIOC_QUERYCAP, &v4l2_capability);
• 特にこの値は使ってないっぽい