Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.lang.reflect.Method;

import android.hardware.Camera;

public class Main {
    static Method addPreviewBufferMethod;

    /** Attempts to allocate and register the given number of preview callback buffers. Uses the camera's current preview
     * size to determine the size of the buffers. If the Android API doesn't support preview buffers, does nothing.
     * Returns true if successful.
     */
    public static boolean createPreviewCallbackBuffers(Camera camera, int nbuffers) {
        if (addPreviewBufferMethod == null)
            return false;

        Camera.Size previewSize = camera.getParameters().getPreviewSize();
        // 12 bits per pixel for preview buffer (8 chroma bytes, then average of 2 bytes each for Cr and Cb)
        int bufferSize = previewSize.width * previewSize.height * 3 / 2;
        for (int i = 0; i < nbuffers; i++) {
            byte[] buffer = new byte[bufferSize];
            try {
                addPreviewBufferMethod.invoke(camera, buffer);
            } catch (Exception ignored) {
                return false;
            }
        }
        return true;
    }
}