/
ImageEncoderCore.java
195 lines (162 loc) · 6.35 KB
/
ImageEncoderCore.java
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package com.seu.magicfilter.encoder.video;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.media.Image;
import android.media.ImageReader;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.SystemClock;
import android.util.Log;
import android.view.Surface;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* ImageReader录制,我在这里将图片传回了主界面显示,你需要自己改装
*
* @author Created by jz on 2017/4/8 14:53
*/
public class ImageEncoderCore {
private static final String TAG = "ImageEncoderCore";
private static final boolean VERBOSE = true;
private static final int MAX_IMAGE_NUMBER = 25;//这个值代表ImageReader最大的存储图像
private static final int ENCODER_BITMAP = 0;
private int mWidth;
private int mHeight;
private int[] mPixelData;
private List<byte[]> mReusableBuffers;
private ImageReader mImageReader;
private Surface mInputSurface;
private EncoderThread mEncoderThread;
private List<ImageInfo> mList;
private OnImageEncoderListener mOnImageEncoderListener;
//这里的width=240,height=320。为了测试实时浏览,尽可能的小,防止转换消耗时间
public ImageEncoderCore(int width, int height, OnImageEncoderListener l) {
this.mWidth = width;
this.mHeight = height;
this.mPixelData = new int[width * height];
this.mReusableBuffers = Collections.synchronizedList(new ArrayList<byte[]>());
this.mOnImageEncoderListener = l;
this.mImageReader = ImageReader.newInstance(width, height, PixelFormat.RGBA_8888, MAX_IMAGE_NUMBER);
mList = Collections.synchronizedList(new ArrayList<ImageInfo>());
mInputSurface = mImageReader.getSurface();
mImageReader.setOnImageAvailableListener(new ImageReader.OnImageAvailableListener() {
@Override
public void onImageAvailable(ImageReader reader) {
if (VERBOSE) Log.i(TAG, "in onImageAvailable");
Image image = reader.acquireNextImage();//获取下一个
Image.Plane[] planes = image.getPlanes();
int width = image.getWidth();//设置的宽
int height = image.getHeight();//设置的高
int pixelStride = planes[0].getPixelStride();//内存对齐参数
int rowStride = planes[0].getRowStride();
int rowPadding = rowStride - pixelStride * width;
byte[] data = getBuffer(rowStride * height);//获得byte
ByteBuffer buffer = planes[0].getBuffer();//获得buffer
buffer.get(data);//将buffer数据写入byte中
mList.add(new ImageInfo(data, pixelStride, rowPadding));
image.close();//用完需要关闭
}
}, null);
mEncoderThread = new EncoderThread();
mEncoderThread.start();
}
private class EncoderThread extends Thread {//这里把byte转换为bitmap,实际效率比较低下,这里只是展示用
@Override
public void run() {
while (mImageReader != null) {
if (mList.isEmpty()) {
SystemClock.sleep(1);
continue;
}
final ImageInfo info = mList.remove(0);
final byte[] data = info.data;
final int pixelStride = info.pixelStride;
final int rowPadding = info.rowPadding;
int offset = 0;
int index = 0;
for (int i = 0; i < mHeight; ++i) {
for (int j = 0; j < mWidth; ++j) {
int pixel = 0;
pixel |= (data[offset] & 0xff) << 16; // R
pixel |= (data[offset + 1] & 0xff) << 8; // G
pixel |= (data[offset + 2] & 0xff); // B
pixel |= (data[offset + 3] & 0xff) << 24; // A
mPixelData[index++] = pixel;
offset += pixelStride;
}
offset += rowPadding;
}
Bitmap bitmap = Bitmap.createBitmap(mPixelData,
mWidth, mHeight,
Bitmap.Config.ARGB_8888);
Message message = Message.obtain();
message.what = ENCODER_BITMAP;
message.obj = bitmap;
mHandler.sendMessage(message);
mReusableBuffers.add(data);
}
}
}
private Handler mHandler = new Handler(Looper.getMainLooper()) {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case ENCODER_BITMAP:
if (mOnImageEncoderListener != null) {
mOnImageEncoderListener.onImageEncoder((Bitmap) msg.obj);
}
break;
}
}
};
/**
* Returns the encoder's input surface.
*/
public Surface getInputSurface() {
return mInputSurface;
}
/**
* Releases encoder resources.
*/
public void release() {
if (VERBOSE) Log.d(TAG, "releasing encoder objects");
if (mImageReader != null) {
mImageReader.close();
mImageReader = null;
}
try {
mEncoderThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
mList.clear();
mReusableBuffers.clear();
mHandler.removeMessages(ENCODER_BITMAP);
mHandler = null;
mOnImageEncoderListener = null;
}
private byte[] getBuffer(int length) {
if (mReusableBuffers.isEmpty()) {
return new byte[length];
} else {
return mReusableBuffers.remove(0);
}
}
public interface OnImageEncoderListener {
void onImageEncoder(Bitmap bitmap);
}
private static class ImageInfo {
final byte[] data;
final int pixelStride;
final int rowPadding;
ImageInfo(byte[] data, int pixelStride, int rowPadding) {
this.data = data;
this.pixelStride = pixelStride;
this.rowPadding = rowPadding;
}
}
}