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Merge "Camera: Update doc to describe tradeoff of DEFAULT timestamp base" into tm-dev

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TreeHugger Robot
2022-05-14 18:05:10 +00:00
committed by Android (Google) Code Review
parent 2dabd1208c bca2a32c73
commit b15596cb67
1 changed files with 10 additions and 1 deletions
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core/java/android/hardware/camera2/params/OutputConfiguration.java
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@@ -166,7 +166,16 @@ public final class OutputConfiguration implements Parcelable {
* {@link #TIMESTAMP_BASE_MONOTONIC}, which is roughly the same time base as * {@link #TIMESTAMP_BASE_MONOTONIC}, which is roughly the same time base as
* {@link android.os.SystemClock#uptimeMillis}.</li> * {@link android.os.SystemClock#uptimeMillis}.</li>
* <li> For all other cases, the timestamp base is {@link #TIMESTAMP_BASE_SENSOR}, the same * <li> For all other cases, the timestamp base is {@link #TIMESTAMP_BASE_SENSOR}, the same
* as what's specified by {@link CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE}.</li> * as what's specified by {@link CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE}.
* <ul><li> For a SurfaceTexture output surface, the camera system re-spaces the delivery
* of output frames based on image readout intervals, reducing viewfinder jitter. The timestamps
* of images remain to be {@link #TIMESTAMP_BASE_SENSOR}.</li></ul></li>
*
* <p>Note that the reduction of frame jitter for SurfaceView and SurfaceTexture comes with
* slight increase in photon-to-photon latency, which is the time from when photons hit the
* scene to when the corresponding pixels show up on the screen. If the photon-to-photon latency
* is more important than the smoothness of viewfinder, {@link #TIMESTAMP_BASE_SENSOR} should be
* used instead.</p>
* *
* @see #TIMESTAMP_BASE_CHOREOGRAPHER_SYNCED * @see #TIMESTAMP_BASE_CHOREOGRAPHER_SYNCED
* @see #TIMESTAMP_BASE_MONOTONIC * @see #TIMESTAMP_BASE_MONOTONIC