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Commit f1745ce8 authored by Zhijun He's avatar Zhijun He
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Camera2: relax the EV compensation requirements 

FULL and LIMITED is allowed to advertise [0,0], which indicates that the
exposure compensation is not supported.

Bug: 19219128
Change-Id: I6020a771201d754351f76617f68c06363fac78e8
parent e0b5a381

core/java/android/hardware/camera2/CameraCharacteristics.java

+4 −2
Original line number Diff line number Diff line
@@ -391,10 +391,12 @@ public final class CameraCharacteristics extends CameraMetadata<CameraCharacteri 
     * {@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}, in counts of {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep},

     * that are supported by this camera device.</p>

     * <p><b>Range of valid values:</b><br></p>

     * <p>Range [0,0] indicates that exposure compensation is not supported.</p>

     * <p>For LIMITED and FULL devices, range must follow below requirements if exposure

     * compensation is supported (<code>range != [0, 0]</code>):</p>

     * <p><code>Min.exposure compensation * {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep} &lt;= -2 EV</code></p>

     * <p><code>Max.exposure compensation * {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep} &gt;= 2 EV</code></p>

     * <p>LEGACY devices may support a smaller range than this, including the range [0,0], which

     * indicates that changing the exposure compensation is not supported.</p>

     * <p>LEGACY devices may support a smaller range than this.</p>

     * <p>This key is available on all devices.</p>

     *

     * @see CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP