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Merge "Camera: Clarify manual capture behavior for logical camera" into qt-dev

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am: 6da414a8f6

Change-Id: I2ade92a130cc6267a51802633f970d906891d5a6
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Shuzhen Wang
2019-06-28 17:48:51 -07:00
committed by android-build-merger
parent c1a4da00c6 6da414a8f6
commit 6f14111467
1 changed files with 8 additions and 8 deletions
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16
core/java/android/hardware/camera2/CameraMetadata.java
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@@ -925,14 +925,14 @@ public abstract class CameraMetadata<TKey> {
* case, when the application configures a RAW stream, the camera device will make sure
* the active physical camera will remain active to ensure consistent RAW output
* behavior, and not switch to other physical cameras.</p>
* <p>To maintain backward compatibility, the capture request and result metadata tags
* required for basic camera functionalities will be solely based on the
* logical camera capabiltity. Other request and result metadata tags, on the other
* hand, will be based on current active physical camera. For example, the physical
* cameras' sensor sensitivity and lens capability could be different from each other.
* So when the application manually controls sensor exposure time/gain, or does manual
* focus control, it must checks the current active physical camera's exposure, gain,
* and focus distance range.</p>
* <p>The capture request and result metadata tags required for backward compatible camera
* functionalities will be solely based on the logical camera capabiltity. On the other
* hand, the use of manual capture controls (sensor or post-processing) with a
* logical camera may result in unexpected behavior when the HAL decides to switch
* between physical cameras with different characteristics under the hood. For example,
* when the application manually sets exposure time and sensitivity while zooming in,
* the brightness of the camera images may suddenly change because HAL switches from one
* physical camera to the other.</p>
*
* @see CameraCharacteristics#LENS_DISTORTION
* @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION