更改 Camera2 API android 的相机设置答案

【问题标题】：Change Camera Settings for the Camera2 API android更改 Camera2 API android 的相机设置
【发布时间】：2023-03-25 05:10:01
【问题描述】：

我正在使用android-camera2-secret-picture-taker 并获取深色且无法更改捕获生成器中的白平衡的图像。以下是我对 capturebuilder 所做的更改：

/**相机设置*/ // captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO); captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, getOrientation());

    /**HDR*/
        captureBuilder.set(CaptureRequest.CONTROL_SCENE_MODE, CameraMetadata.CONTROL_SCENE_MODE_HDR);

    /**Settings for Flash*/
        captureBuilder.set(CaptureRequest.FLASH_MODE, CameraMetadata.FLASH_MODE_TORCH);

captureBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CaptureRequest.CONTROL_AWB_MODE_AUTO);

/**for White Balance */
        captureBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CaptureRequest.CONTROL_AWB_MODE_AUTO);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.CONTROL_AWB_MODE_AUTO);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, colorTemperature(CaptureRequest.CONTROL_AWB_MODE_AUTO));

//for incandescent
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.CONTROL_AWB_MODE_INCANDESCENT);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, colorTemperature(CaptureRequest.CONTROL_AWB_MODE_INCANDESCENT));
//        captureBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, CameraCapabilities.colorTemperature(Integer.parseInt(awbMode)));

//for daylight
captureBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.CONTROL_AWB_MODE_DAYLIGHT);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, colorTemperature(CaptureRequest.CONTROL_AWB_MODE_DAYLIGHT));
        }

//for fluorescent
captureBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.CONTROL_AWB_MODE_FLUORESCENT);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, colorTemperature(CaptureRequest.CONTROL_AWB_MODE_FLUORESCENT));}

//for cloudy
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.CONTROL_AWB_MODE_CLOUDY_DAYLIGHT);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, colorTemperature(CaptureRequest.CONTROL_AWB_MODE_CLOUDY_DAYLIGHT));

/**For ISO*/
    captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_FULL);
    CameraCharacteristics mCameraCharacteristics = characteristics;
    List keys_list = characteristics.getKeys();
    Range<Integer> range2 = characteristics.get(CameraCharacteristics.SENSOR_INFO_SENSITIVITY_RANGE);
    int iso = ((200 * (200 - 100)) / 100 + 100);
    if (range2 != null) {
        int max1 = range2.getUpper();//10000
        int min1 = range2.getLower();//100
        iso = ((max1 * (max1 - min1)) / 100 + min1);
    }
    captureBuilder.set(CaptureRequest.SENSOR_SENSITIVITY, iso);

我无法更改亮度和除 FlashMode 之外的其他设置。

【问题讨论】：

关于此的任何更新
我无法改变亮度 - 你得到一个错误？或者这个变化没有出现在图片中？请注意，对CaptureBuilder.set() 中所有这些参数的支持是可选的，只有在android.info.supportedHardwareLevel 键中报告为HARDWARE_LEVEL_FULL 设备的设备有点保证。

标签： android settings iso android-camera2

【解决方案1】：

我相信您正在寻找“自动曝光”，因为您在谈论亮度。因此，我建议您使用：

captureBuilder.set(CaptureRequest.CONTROL_AE_EXPOSURE_COMPENSATION, 4);
// play around with the "4" which is the amount of brightness you want compensate by.

【讨论】：