Adnroid ffmpeg decoding (2) bug Modification

Through the previous article, the program is basically ready to run and many problems are found after debugging. Now we can solve them slowly.

1. Modify the decoded length and width of jni.

Modify the Decoding interface to the following:

JNIEXPORT jint JNICALL Java_com_dao_iclient_FfmpegIF_Decoding(JNIEnv * env, jclass obj,const jbyteArray pSrcData,const jint DataLen,const jbyteArray pDeData,const jint dwidth,const jint dheight){//LOGI("Decoding");int frameFinished;int i,j;int consumed_bytes;jbyte * Buf = (jbyte*)(*env)->GetByteArrayElements(env, pSrcData, 0);jbyte * Pixel= (jbyte*)(*env)->GetByteArrayElements(env, pDeData, 0);   avpkt.data = Buf;avpkt.size = DataLen;consumed_bytes=avcodec_decode_video2(pCodecCtx,pFrame,&frameFinished,&avpkt);    //av_free_packet(&avpkt);    if(frameFinished) {picture=avcodec_alloc_frame();avpicture_fill((AVPicture *) picture, (uint8_t *)Pixel, PIX_FMT_RGB565,dwidth,dheight);swsctx = sws_getContext(pCodecCtx->width,pCodecCtx->height, pCodecCtx->pix_fmt,dwidth, dheight,PIX_FMT_RGB565, SWS_BICUBIC, NULL, NULL, NULL);sws_scale(swsctx,(const uint8_t* const*)pFrame->data,pFrame->linesize,0,pCodecCtx->height,picture->data,picture->linesize);}    (*env)->ReleaseByteArrayElements(env, pSrcData, Buf, 0);    (*env)->ReleaseByteArrayElements(env, pDeData, Pixel, 0);return  consumed_bytes;}

Modify the Decoding function definition in FfmpegIF

static public native int Decoding(byte[] in,int datalen,byte[] out,int dwidth,int dheight);

After the modification, the main file is as follows:

package com.dao.iclient;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.Socket;import java.nio.ByteBuffer;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.os.Bundle;import android.os.Handler;import android.util.DisplayMetrics;import android.view.Menu;import android.view.Window;import android.view.WindowManager;import android.widget.ImageView;public class IcoolClient extends Activity {private Socket socket;private ByteBuffer buffer;private ByteBuffer Imagbuf;//net packageprivate static short type = 0;private static int packageLen = 0;private static int sendDeviceID = 0;private static int revceiveDeviceID = 0;private static short sendDeviceType = 0;private static int dataIndex = 0;private static int dataLen = 0;private static int frameNum = 0;private static int commType = 0;//sizeprivate static int packagesize;private OutputStream outputStream=null;private InputStream inputStream=null;private Bitmap VideoBit;private ImageView mImag;private byte[] mout;private Handler mHandler;private int swidth = 0;private int sheight = 0;private int dwidth = 0;private int dheight = 0;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.activity_icool_client);mImag = (ImageView)findViewById(R.id.mimg);        packagesize = 7 * 4 + 2 * 2;        buffer = ByteBuffer.allocate(packagesize);        swidth = 640;        sheight = 480;        FfmpegIF.DecodeInit(swidth, sheight);        DisplayMetrics metric = new DisplayMetrics();        getWindowManager().getDefaultDisplay().getMetrics(metric);        dwidth = metric.widthPixels;        dheight = metric.heightPixels;        VideoBit = Bitmap.createBitmap(dwidth, dheight, Config.RGB_565);        mout = new byte[dwidth * dheight * 2];        Imagbuf = ByteBuffer.wrap(mout);        mHandler = new Handler();        new StartThread().start();}final Runnable mUpdateUI = new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stub//ByteBuffer Imagbuf = ByteBuffer.wrap(mout);    VideoBit.copyPixelsFromBuffer(Imagbuf);    mImag.setImageBitmap(VideoBit);    Imagbuf.clear();    }};    class StartThread extends Thread {@Overridepublic void run() {// TODO Auto-generated method stub//super.run();int datasize;try {        socket = new Socket("192.168.1.21", 8888);        SendCom(FfmpegIF.VIDEO_COM_STOP);        SendCom(FfmpegIF.VIDEO_COM_START);        inputStream = socket.getInputStream();        while(true) {        byte[] Rbuffer = new byte[packagesize];inputStream.read(Rbuffer);datasize = getDataL(Rbuffer);if(datasize > 0) {byte[] Data = new byte[datasize];int size;int readsize = 0;do {size = inputStream.read(Data,readsize,(datasize - readsize));readsize += size;}while(readsize != datasize);//byte[] mout = new byte[dwidth * dheight * 2];    FfmpegIF.Decoding(Data, readsize, mout,dwidth,dheight);    //Imagbuf = ByteBuffer.wrap(mout);    mHandler.post(mUpdateUI);    SendCom(FfmpegIF.VIDEO_COM_ACK);}        }}catch (IOException e) {            e.printStackTrace();        }}    }    public void SendCom(int comtype) {    byte[] Bbuffer = new byte[packagesize];    try {    outputStream = socket.getOutputStream();    type = FfmpegIF.TYPE_MODE_COM;    packageLen = packagesize;    commType = comtype;    putbuffer();    Bbuffer = buffer.array();    outputStream.write(Bbuffer);    //System.out.println("send done");    } catch (IOException e) {            e.printStackTrace();        }     }        public void putbuffer(){    buffer.clear();        buffer.put(ShorttoByteArray(type));        buffer.put(InttoByteArray(packageLen));        buffer.put(InttoByteArray(sendDeviceID));        buffer.put(InttoByteArray(revceiveDeviceID));        buffer.put(ShorttoByteArray(sendDeviceType));        buffer.put(InttoByteArray(dataIndex));        buffer.put(InttoByteArray(dataLen));        buffer.put(InttoByteArray(frameNum));        buffer.put(InttoByteArray(commType));    }        private static byte[] ShorttoByteArray(short n) {        byte[] b = new byte[2];        b[0] = (byte) (n & 0xff);        b[1] = (byte) (n >> 8 & 0xff);        return b;    }    private static byte[] InttoByteArray(int n) {        byte[] b = new byte[4];        b[0] = (byte) (n & 0xff);        b[1] = (byte) (n >> 8 & 0xff);        b[2] = (byte) (n >> 16 & 0xff);        b[3] = (byte) (n >> 24 & 0xff);        return b;    }     public short getType(byte[] tpbuffer){    short gtype = (short) ((short)tpbuffer[0] + (short)(tpbuffer[1] << 8));    return gtype;    }        public int getPakL(byte[] pkbuffer){    int gPackageLen = ((int)(pkbuffer[2]) & 0xff) | ((int)(pkbuffer[3] & 0xff) << 8) | ((int)(pkbuffer[4] & 0xff) << 16) | ((int)(pkbuffer[5] & 0xff) << 24);    return gPackageLen;    }        public int getDataL(byte[] getbuffer){    int gDataLen = (((int)(getbuffer[20] & 0xff)) | ((int)(getbuffer[21] & 0xff) << 8) | ((int)(getbuffer[22] & 0xff) << 16) | ((int)(getbuffer[23] & 0xff) << 24));    return gDataLen;    }        public int getFrameN(byte[] getbuffer){    int getFrameN = (int)(((int)(getbuffer[24])) + ((int)(getbuffer[25]) << 8) + ((int)(getbuffer[26]) << 16) + ((int)(getbuffer[27]) << 24));    return getFrameN;    }/*        private void byte2hex(byte [] buffer) {          String h = "";          for(int i = 0; i < buffer.length; i++){              String temp = Integer.toHexString(buffer[i] & 0xFF);            if(temp.length() == 1){                temp = "0" + temp;              }              h = h + " "+ temp;          }          System.out.println(h);    }    */ /*  @Overrideprotected void onResume() {// TODO Auto-generated method stubif(getRequestedOrientation()!=ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE)  setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);super.onResume();}*/@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.icool_client, menu);return true;}}

Increase the width and height of the original image, set the width and height of the target image to the width and height of the screen, and change Mainfest. xml to Landscape Display.

Add the following parameters to the Activity:

android:screenOrientation="landscape"

Added

Imagbuf.clear();

Solve the Problem of Imagebuf Overflow

Modify InputStream. read process in StartThread

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Author: hclydao
Http://blog.csdn.net/hclydao
No copyright, but please keep this statement for reprinting

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