# camera开发

在RayNeo眼镜上进行camera应用的开发与一般的android平台camera应用开发并无什么区别，详情请参考[developer.android.com](https://developer.android.com/media/camera/camera2?hl=zh_cn)，同时也需要注意权限的申请以及资源的释放。

这里推荐使用camera2 API，sample中有详细的示例演示了如何在眼镜应用中调用camera，并在两个屏幕上进行预览以及调用camera获取一帧图片的逻辑。具体的实现方式可以参考CameraActivity。

如果需要查看眼镜camera支持的分辨率以及支持的预览参数，用户可自行枚举查看，示例中也有一个简单的camera枚举方法仅供参考：

```kotlin
private fun enumerateCameraResolutions() {
    val cameraManager = getSystemService(CAMERA_SERVICE) as CameraManager
    val cameraIdList = cameraManager.cameraIdList

    for (cameraId in cameraIdList) {
        val characteristics = cameraManager.getCameraCharacteristics(cameraId)
        val map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)

        if (map != null) {
            val previewSizes = map.getOutputSizes(SurfaceTexture::class.java)
            val pictureSizes = map.getOutputSizes(ImageFormat.JPEG)

            FLogger.d("Camera ID: $cameraId")
            FLogger.d("Supported Preview Sizes:")
            for (size in previewSizes) {
                FLogger.d("  ${size.width}x${size.height}")
            }

            FLogger.d("Supported Picture Sizes:")
            for (size in pictureSizes) {
                FLogger.d("  ${size.width}x${size.height}")
            }
        }
    }
}
```

snapdragonCamera的源码示例（<mark style="color:red;">AE收敛状态=2则可以正常取图</mark>）： <https://github.com/Lh1600852534/snapdragonCamera/blob/master/src/com/android/camera/CaptureModule.java>

#### VGA camera

Rayneo x3眼镜上还有一个独立的VGA摄像头，专门用于空间定位，支持的参数如下：

```yaml
2025-09-25 18:13:32.490  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D  Camera ID: 1
2025-09-25 18:13:32.490  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D  Supported Preview Sizes:
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    640x480
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    640x400
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    640x360
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    480x360
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    352x288
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    320x240
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    320x180
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    176x144
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D  Supported Picture Sizes:
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    640x480
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    640x400
2025-09-25 18:13:32.491  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    640x360
2025-09-25 18:13:32.492  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    480x360
2025-09-25 18:13:32.492  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    352x288
2025-09-25 18:13:32.492  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    320x240
2025-09-25 18:13:32.492  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    320x180
2025-09-25 18:13:32.492  1583-1583  camera                  com.ffalcon.mercury.android.sdk      D    176x144
```


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