choose Camera Fixed Preview Fps - Android android.hardware

Android examples for android.hardware:Camera Preview

  1. HOME
  2. Android
  3. android.hardware
  4. Camera Preview

Description

choose Camera Fixed Preview Fps

Demo Code

import java.util.List;

import android.hardware.Camera;
import android.util.Log;

public class Main {

  private static final String TAG = "CameraUtils";

  /**//from  w  w w .  j a  va  2  s .c  o m
   * Attempts to find a fixed preview frame rate that matches the desired frame
   * rate.
   * <p/>
   * It doesn't seem like there's a great deal of flexibility here.
   * <p/>
   * TODO: follow the recipe from
   * http://stackoverflow.com/questions/22639336/#22645327
   *
   * @return The expected frame rate, in thousands of frames per second.
   */
  public static int chooseFixedPreviewFps(Camera.Parameters parms, int desiredThousandFps) {
    List<int[]> supported = parms.getSupportedPreviewFpsRange();

    for (int[] entry : supported) {
      Log.d(TAG, "entry: " + entry[0] + " - " + entry[1]);
      if ((entry[0] == entry[1]) && (entry[0] == desiredThousandFps)) {
        parms.setPreviewFpsRange(entry[0], entry[1]);
        return entry[0];
      }
    }

    int[] tmp = new int[2];
    parms.getPreviewFpsRange(tmp);
    int guess;
    if (tmp[0] == tmp[1]) {
      guess = tmp[0];
    } else {
      guess = tmp[1] / 2; // shrug
    }

    return guess;
  }

}

Related Tutorials