Camera2basic应用程序，在Android 6.0 LGG3中具有非常暗的预览 [英] Camera2basic app, has very dark preview in Android 6.0 LGG3

问题描述

可能仅在LG G3上使用的新API似乎有所更改.

The new API, perhaps only on LG G3, seems to have something changed.

我正在使用示例代码.

在我的nexus 4上，代码可以完美运行，但是在更新到Android 6.0的LGG3上却不能.有什么想法吗?

On my nexus 4, the code runs perfectly, but on LGG3 updated to Android 6.0 it does not. Any ideas?

我使用了设置，但没有运气，在Nexus 4上仍然可以正常使用

I played with the settings, but no luck, this still works fine on Nexus 4:

mPreviewRequestBuilder.set(CaptureRequest.BLACK_LEVEL_LOCK, false);


mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AWB_LOCK, false);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CaptureRequest.CONTROL_AWB_MODE_AUTO);


mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_LOCK, false);

mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_ANTIBANDING_MODE, CaptureRequest.CONTROL_AE_ANTIBANDING_MODE_AUTO);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_EXPOSURE_COMPENSATION, 0);
//mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, Range.create(1000,1000));
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, 0);


mPreviewRequestBuilder.set(CaptureRequest.CONTROL_MODE, CaptureRequest.CONTROL_MODE_AUTO);
mPreviewRequestBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.CONTROL_MODE_AUTO);


mPreviewRequestBuilder.set(CaptureRequest.CONTROL_CAPTURE_INTENT,
        CaptureRequest.CONTROL_CAPTURE_INTENT_PREVIEW);

mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE,
        CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);

推荐答案

我找到了适合我的解决方案.解决方案是设置设备支持的FPS范围.

I've found the solution that work for me. The solution is to setup FPS range that supported by device.

mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, getRange());

获取范围的功能:

private Range<Integer> getRange() {
    CameraCharacteristics chars = mCameraManager.getCameraCharacteristics(mCameraId);
    Range<Integer>[] ranges = chars.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);

    Range<Integer> result = null;

    for (Range<Integer> range : ranges) {
        int upper = range.getUpper();

        // 10 - min range upper for my needs
        if (upper >= 10) {
            if (result == null || upper < result.getUpper().intValue()) {
                result = range;
            }
        }
    }

    if (result == null) {
        result = ranges[0];
    }

    return result;
}

更新:其他设置(如果有兴趣的话)

Update: other settings (if someone interested in)

mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_LOCK, false);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CameraMetadata.CONTROL_AE_MODE_ON);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CameraMetadata.CONTROL_AWB_MODE_AUTO);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
mPreviewRequestBuilder.set(CaptureRequest.STATISTICS_FACE_DETECT_MODE, CameraMetadata.STATISTICS_FACE_DETECT_MODE_SIMPLE);

这篇关于Camera2basic应用程序，在Android 6.0 LGG3中具有非常暗的预览的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！