choose Fixed Preview Fps for Camera - Android android.hardware

Android examples for android.hardware:Camera Preview

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

Description

choose Fixed Preview Fps for Camera

Demo Code

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

public class Main{

    private static final String TAG = "";
    /**//from   w w w.  j ava  2  s  . c om
     * 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
        }

        Log.d(TAG, "Couldn't find match for " + desiredThousandFps
                + ", using " + guess);
        return guess;
    }

}

Related Tutorials