set Best Camera Preview FPS - Android Camera

Android examples for Camera:Camera Preview

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

Description

set Best Camera Preview FPS

Demo Code

import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

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

public class Main {
  private static final String TAG = "";
  private static final int MIN_FPS = 10;
  private static final int MAX_FPS = 20;

  public static void setBestPreviewFPS(Camera.Parameters parameters) {
    setBestPreviewFPS(parameters, MIN_FPS, MAX_FPS);
  }//from   w w  w . j  ava2  s.  c  om

  public static void setBestPreviewFPS(Camera.Parameters parameters, int minFPS, int maxFPS) {
    List<int[]> supportedPreviewFpsRanges = parameters.getSupportedPreviewFpsRange();
    if (supportedPreviewFpsRanges != null && !supportedPreviewFpsRanges.isEmpty()) {
      int[] suitableFPSRange = null;
      for (int[] fpsRange : supportedPreviewFpsRanges) {
        int thisMin = fpsRange[Camera.Parameters.PREVIEW_FPS_MIN_INDEX];
        int thisMax = fpsRange[Camera.Parameters.PREVIEW_FPS_MAX_INDEX];
        if (thisMin >= minFPS * 1000 && thisMax <= maxFPS * 1000) {
          suitableFPSRange = fpsRange;
          break;
        }
      }
      if (suitableFPSRange == null) {
        Log.i(TAG, "Sem intervalo de QPS adequado?");
      } else {
        int[] currentFpsRange = new int[2];
        parameters.getPreviewFpsRange(currentFpsRange);
        if (Arrays.equals(currentFpsRange, suitableFPSRange)) {
          Log.i(TAG, Arrays.toString(suitableFPSRange));
        } else {
          Log.i(TAG, Arrays.toString(suitableFPSRange));
          parameters.setPreviewFpsRange(suitableFPSRange[Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
              suitableFPSRange[Camera.Parameters.PREVIEW_FPS_MAX_INDEX]);
        }
      }
    }
  }

}

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