• 本文
• リロード
• 差分
• バックアップ
• 名前変更
• リファラ
• 新規ページ
• 編集

Android/カメラ

Android/カメラ/HAL

Top / Android / カメラ / HAL

• http://tools.oesf.biz/android-7.0.0_r1.0/xref/system/media/camera/docs/docs.html
• https://android.googlesource.com/platform/system/media/ /master/camera/docs/docs.html

• https://source.android.com/devices/camera/camera3_requests_hal.html

処理の流れとかのドキュメント

• http://tools.oesf.biz/android-7.0.0_r1.0/xref/hardware/libhardware/include/hardware/camera3.h#24

メモ

• HAL2.1+ implementation of CameraDevice.
• AOSP/frameworks/base/core/java/android/hardware/camera2/impl/CameraDeviceImpl.java

バージョン

• https://source.android.com/devices/camera/versioning.html
• AOSP/hardware/libhardware/include/hardware/camera_common.h

  Camera API1	The app-level camera framework on Android 4.4 and earlier devices, exposed through the android.hardware.Camera class.
  Camera API2	The app-level camera framework on Android 5.0 and later devices, exposed through the android.hardware.camera2 package.
  Camera HAL	The camera module layer implemented by SoC vendors. The app-level public frameworks are built on top of the camera HAL.
  Camera HAL 1.0?	Initial Android camera HAL (Android 4.0)		camera.h?
  Camera HAL 2.0?	Initial release of expanded-capability HAL (Android 4.2)	CAMERA_DEVICE_API_VERSION_2_0	Camera2Device (Android 4.2～Android 6.0) camera2.h android.hardware.Camera
  Camera HAL 2.1?	Support per-device static metadata.	CAMERA_DEVICE_API_VERSION_2_1?	camera2.h
  Camera HAL 3.0?	Version of the camera device HAL released with Android 4.3.	CAMERA_DEVICE_API_VERSION_3_0	Camera3Device
  Camera HAL 3.1?	Version of the camera device HAL released with Android 4.4.	CAMERA_DEVICE_API_VERSION_3_1?
  Camera HAL 3.2?	Version of the camera device HAL released with Android 5.0.	CAMERA_DEVICE_API_VERSION_3_2?
  Camera HAL 3.3?	Version of the camera device HAL released with Android 6.0.	CAMERA_DEVICE_API_VERSION_3_3?
  Camera HAL 3.4	Version of the camera device HAL released with Android 7.0.	CAMERA_DEVICE_API_VERSION_3_4

• Camera HAL 3

CameraDeviceBase

• Base interface for version >= 2 camera device classes, which interface to camera HAL device versions >= 2.

派生クラス

• Camera3Device	AOSP/frameworks/av/services/camera/libcameraservice/device3	Android 4.3～	CameraDevice for HAL devices with version CAMERA_DEVICE_API_VERSION_3_0 or higher.
  Camera2Device	AOSP/frameworks/av/services/camera/libcameraservice/device2?	Android 4.2～Android 6.0	CameraDevice for HAL devices with version CAMERA_DEVICE_API_VERSION_2_0

関連

• Android/HAL
• CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL

メモ

• https://android.googlesource.com/device/lge/bullhead/ /android-7.1.1_r23/camera/QCamera2/HAL3/QCamera3HWI.cpp

例

• AOSP/hardware/libhardware/modules/camera/ExampleCamera.cpp?

  AOSP/hardware/libhardware/modules/usbcamera/UsbCamera.cpp?

  AOSP/device/generic/goldfish/camera/EmulatedFakeCamera3.cpp

  AOSP/device/generic/goldfish/camera/EmulatedFakeCamera2.cpp?

  AOSP/hardware/qcom/camera/QCamera2/HAL3/QCamera3HWI.cpp?

  AOSP/device/lge/bullhead/camera/QCamera2/HAL3/QCamera3HWI.cpp

メモ

• libcamera2ndk.so?
• libcamera_client.so?
• libcamera_metadata.so?
• libcameraservice.so
• libmmcamera_interface.so?