文章分类 - Android
摘要：Request creation and submission Request creation and submission construct_default_request_settings Create capture settings for standard camera use cas
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posted @ 2016-04-19 16:44
dolinux
摘要：Output streams and cropping Output streams Unlike the old camera subsystem, which has 3-4 different ways of producing data from the camera (ANativeWin
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posted @ 2016-04-19 16:43
dolinux
摘要：Error and stream handling Error management Camera HAL device ops functions that have a return value will all return -ENODEV / NULL in case of a seriou
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posted @ 2016-04-19 16:43
dolinux
摘要：3A Modes and State Transition While the actual 3A algorithms are up to the HAL implementation, a high-level state machine description is defined by th
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posted @ 2016-04-19 16:40
dolinux
摘要：Metadata and Controls Metadata support To support the saving of raw image files by the Android framework, substantial metadata is required about the s
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posted @ 2016-04-19 16:39
dolinux
摘要：HAL subsystem Requests The app framework issues requests for captured results to the camera subsystem. One request corresponds to one set of results.
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posted @ 2016-04-19 16:38
dolinux
摘要：Camera HAL v3 overview Android's camera Hardware Abstraction Layer (HAL) connects the higher level camera framework APIs in android.hardware.Camera to
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posted @ 2016-04-19 16:35
dolinux
摘要：Camera Android's camera Hardware Abstraction Layer (HAL) connects the higher level camera framework APIs in android.hardware to your underlying camera
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posted @ 2016-04-19 16:34
dolinux
摘要：Bluetooth Android provides a default Bluetooth stack that is divided into two layers: The Bluetooth Embedded System (BTE), which implements the core B
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posted @ 2016-04-19 16:32
dolinux
摘要：DRM This document provides an overview of the Android DRM framework, and introduces the interfaces a DRM plug-in must implement. This document does no
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posted @ 2016-04-19 15:46
dolinux
摘要：Device Configuration External storage is managed by a combination of the vold init service and MountService system service. Mounting of physical exter
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posted @ 2016-04-19 15:42
dolinux
摘要：Configuration Examples Below are examples of external storage configurations for various device types. Only the relevant portions of the configuration
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posted @ 2016-04-19 15:42
dolinux
摘要：Adoptable Storage Android has always supported external storage accessories (such as SD cards), but these accessories were historically limited to sim
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posted @ 2016-04-19 15:41
dolinux
摘要：Traditional Storage Android supports devices with traditional storage, which is defined to be a case-insensitive filesystem with immutable POSIX permi
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posted @ 2016-04-19 15:40
dolinux
摘要：Storage Android has evolved over time to support a wide variety of storage device types and features. All versions of Android support devices with tra
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posted @ 2016-04-19 15:17
dolinux
摘要：HAL version deprecation In the L release of Android, we are halting support for some sensor HAL versions. The only supported versions are SENSORS_DEVI
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posted @ 2016-04-19 15:16
dolinux
摘要：Sensor types Sensor axis definition Sensor event values from many sensors are expressed in a specific frame that is static relative to the phone. This
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posted @ 2016-04-19 15:15
dolinux
摘要：HAL interface The HAL interface, declared in sensors.h, represents the interface between the Android framework and the hardware-specific software. A H
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posted @ 2016-04-19 15:12
dolinux
摘要：Batching What is batching? “Batching” refers to storing sensor events in a hardware FIFO before reporting them through the HAL instead of reporting th
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posted @ 2016-04-19 15:12
dolinux
摘要：Power consumption Low-power sensors Some sensor types are defined as being low power. Low-power sensors must function at low power, with their process
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posted @ 2016-04-19 15:11
dolinux
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