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Les Miserables
9 décembre 2019, par
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Somos millones 1
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Pourquoi Obama lit il mes mails ?
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Autres articles (94)
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Sur d’autres sites (6598)
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Getting exception while loading ffmpeg library
16 septembre 2012, par user1662334I am using ffmpeg library in one of my sample project.I have compiled it successfully,but while loading the library,i am getting the exception that this library is not found.
This is the Android.mk code :
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := ffmpegutils
LOCAL_SRC_FILES := native.c
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
LOCAL_LDLIBS := -L$(NDK_PLATFORMS_ROOT)/$(TARGET_PLATFORM)/arch-arm/usr/lib -L$(LOCAL_PATH) -lavformat -lavcodec -lavdevice -lavfilter -lavcore -lavutil -lswscale -llog -ljnigraphics -lz -ldl -lgcc
include $(BUILD_SHARED_LIBRARY)This is the code :
public class MainActivity extends Activity {
private static native void openFile();
private static native void drawFrame(Bitmap bitmap);
private static native void drawFrameAt(Bitmap bitmap, int secs);
private Bitmap mBitmap;
private int mSecs = 0;
static {
System.loadLibrary("ffmpegutils");
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(new VideoView(this));
setContentView(R.layout.main);
mBitmap = Bitmap.createBitmap(320, 240, Bitmap.Config.ARGB_8888);
openFile();
Button btn = (Button)findViewById(R.id.frame_adv);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
drawFrame(mBitmap);
ImageView i = (ImageView)findViewById(R.id.frame);
i.setImageBitmap(mBitmap);
}
});
Button btn_fwd = (Button)findViewById(R.id.frame_fwd);
btn_fwd.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mSecs += 5;
drawFrameAt(mBitmap, mSecs);
ImageView i = (ImageView)findViewById(R.id.frame);
i.setImageBitmap(mBitmap);
}
});
Button btn_back = (Button)findViewById(R.id.frame_back);
btn_back.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mSecs -= 5;
drawFrameAt(mBitmap, mSecs);
ImageView i = (ImageView)findViewById(R.id.frame);
i.setImageBitmap(mBitmap);
}
});
}
}This is the exception :
09-16 15:00:06.272: E/AndroidRuntime(392): Uncaught handler: thread main exiting due to uncaught exception
09-16 15:00:06.291: E/AndroidRuntime(392): java.lang.ExceptionInInitializerError
09-16 15:00:06.291: E/AndroidRuntime(392): at java.lang.Class.newInstanceImpl(Native Method)
09-16 15:00:06.291: E/AndroidRuntime(392): at java.lang.Class.newInstance(Class.java:1479)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.os.Handler.dispatchMessage(Handler.java:99)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.os.Looper.loop(Looper.java:123)
09-16 15:00:06.291: E/AndroidRuntime(392): at android.app.ActivityThread.main(ActivityThread.java:4363)
09-16 15:00:06.291: E/AndroidRuntime(392): at java.lang.reflect.Method.invokeNative(Native Method)
09-16 15:00:06.291: E/AndroidRuntime(392): at java.lang.reflect.Method.invoke(Method.java:521)
09-16 15:00:06.291: E/AndroidRuntime(392): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
09-16 15:00:06.291: E/AndroidRuntime(392): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
09-16 15:00:06.291: E/AndroidRuntime(392): at dalvik.system.NativeStart.main(Native Method)
09-16 15:00:06.291: E/AndroidRuntime(392): Caused by: java.lang.UnsatisfiedLinkError: Library ffmpegutils not found
09-16 15:00:06.291: E/AndroidRuntime(392): at java.lang.Runtime.loadLibrary(Runtime.java:489)
09-16 15:00:06.291: E/AndroidRuntime(392): at java.lang.System.loadLibrary(System.java:557)
09-16 15:00:06.291: E/AndroidRuntime(392): at com.churnlabs.ffmpegsample.MainActivity.<clinit>(MainActivity.java:36)
</clinit>Please help me.Thanks in advance.
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Getting IO Exception while using Runtime.getRuntime().exec()
16 septembre 2012, par user1662334I want to use command line facility in android to use ffmpeg library.But i am getting IO Exception while trying that,I have stored ffmpeg.exe in /files folder.This is the code :
public class MainActivity extends Activity {
Process p;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Process p = Runtime.getRuntime().exec("/data/data/com.example.ffmpegnew/files/ffmpeg",null, new File("/data/data/com.example.ffmpegnew/files"));
}
catch(Exception e)
{
System.out.println("exception"+e);
}
}
}This is the error :
09-16 16:24:38.751: I/System.out(2209): exceptionjava.io.IOException: Error running exec(). Commands: [/data/data/com.example.ffmpegnew] Working Directory: /data/data Environment: nullPlease tell me what is the problem.Thanks in advance.
-
Recording video on Android using JavaCV (Updated)
12 février 2014, par Fabio BergmannI'm trying to record a video in Android using the JavaCV lib.
I need to record the video in 640x360.I have installed everything as described in README.txt file and I followed the example as below :
https://code.google.com/p/javacv/source/browse/samples/RecordActivity.java
In this example, the video size is this :
private int imageWidth = 320 ;
private int imageHeight = 240 ;In my case, I need to record a video in 640x360 H.264.
(UPDATE) I have reverted my code and kept exactly like in the example, just changing imageWidth and imageHeight to 640x360.
Now I'm getting the video like this image :
http://bergmann.net.br/img/screenshot_video_error.pngHere is my code :
import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.hardware.Camera;
import android.hardware.Camera.PreviewCallback;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.PowerManager;
import android.util.Log;
import android.view.Display;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import java.io.IOException;
import java.nio.ShortBuffer;
import com.googlecode.javacv.FFmpegFrameRecorder;
import static com.googlecode.javacv.cpp.opencv_core.*;
public class FFmpegRecordActivity extends Activity implements OnClickListener {
private final static String CLASS_LABEL = "RecordActivity";
private final static String LOG_TAG = CLASS_LABEL;
private PowerManager.WakeLock mWakeLock;
private String ffmpeg_link = "/mnt/sdcard/stream.flv";
long startTime = 0;
boolean recording = false;
private volatile FFmpegFrameRecorder recorder;
private boolean isPreviewOn = false;
private int sampleAudioRateInHz = 44100;
private int imageWidth = 640;
private int imageHeight = 360;
private int frameRate = 30;
/* audio data getting thread */
private AudioRecord audioRecord;
private AudioRecordRunnable audioRecordRunnable;
private Thread audioThread;
volatile boolean runAudioThread = true;
/* video data getting thread */
private Camera cameraDevice;
private CameraView cameraView;
private IplImage yuvIplimage = null;
/* layout setting */
private final int bg_screen_bx = 232;
private final int bg_screen_by = 128;
private final int bg_screen_width = 700;
private final int bg_screen_height = 500;
private final int bg_width = 1123;
private final int bg_height = 715;
private final int live_width = 1280;
private final int live_height = 720;
private int screenWidth, screenHeight;
private Button btnRecorderControl;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(R.layout.main);
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK,
CLASS_LABEL);
mWakeLock.acquire();
initLayout();
initRecorder();
}
@Override
protected void onResume() {
super.onResume();
if (mWakeLock == null) {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK,
CLASS_LABEL);
mWakeLock.acquire();
}
}
@Override
protected void onPause() {
super.onPause();
if (mWakeLock != null) {
mWakeLock.release();
mWakeLock = null;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
recording = false;
if (cameraView != null) {
cameraView.stopPreview();
cameraDevice.release();
cameraDevice = null;
}
if (mWakeLock != null) {
mWakeLock.release();
mWakeLock = null;
}
}
private void initLayout() {
/* get size of screen */
Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
screenWidth = display.getWidth();
screenHeight = display.getHeight();
RelativeLayout.LayoutParams layoutParam = null;
LayoutInflater myInflate = null;
myInflate = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
RelativeLayout topLayout = new RelativeLayout(this);
setContentView(topLayout);
LinearLayout preViewLayout = (LinearLayout) myInflate.inflate(
R.layout.main, null);
layoutParam = new RelativeLayout.LayoutParams(screenWidth, screenHeight);
topLayout.addView(preViewLayout, layoutParam);
/* add control button: start and stop */
btnRecorderControl = (Button) findViewById(R.id.recorder_control);
btnRecorderControl.setText("Start");
btnRecorderControl.setOnClickListener(this);
/* add camera view */
int display_width_d = (int) (1.0 * bg_screen_width * screenWidth / bg_width);
int display_height_d = (int) (1.0 * bg_screen_height * screenHeight / bg_height);
int prev_rw, prev_rh;
if (1.0 * display_width_d / display_height_d > 1.0 * live_width
/ live_height) {
prev_rh = display_height_d;
prev_rw = (int) (1.0 * display_height_d * live_width / live_height);
} else {
prev_rw = display_width_d;
prev_rh = (int) (1.0 * display_width_d * live_height / live_width);
}
prev_rw = 640;
prev_rh = 360;
layoutParam = new RelativeLayout.LayoutParams(prev_rw, prev_rh);
layoutParam.topMargin = (int) (1.0 * bg_screen_by * screenHeight / bg_height);
layoutParam.leftMargin = (int) (1.0 * bg_screen_bx * screenWidth / bg_width);
cameraDevice = Camera.open();
Log.i(LOG_TAG, "cameara open");
cameraView = new CameraView(this, cameraDevice);
topLayout.addView(cameraView, layoutParam);
Log.i(LOG_TAG, "cameara preview start: OK");
}
// ---------------------------------------
// initialize ffmpeg_recorder
// ---------------------------------------
private void initRecorder() {
Log.w(LOG_TAG, "init recorder");
if (yuvIplimage == null) {
yuvIplimage = IplImage.create(imageWidth, imageHeight,
IPL_DEPTH_8U, 2);
Log.i(LOG_TAG, "create yuvIplimage");
}
Log.i(LOG_TAG, "ffmpeg_url: " + ffmpeg_link);
recorder = new FFmpegFrameRecorder(ffmpeg_link, imageWidth,
imageHeight, 1);
recorder.setFormat("flv");
recorder.setSampleRate(sampleAudioRateInHz);
// Set in the surface changed method
recorder.setFrameRate(frameRate);
Log.i(LOG_TAG, "recorder initialize success");
audioRecordRunnable = new AudioRecordRunnable();
audioThread = new Thread(audioRecordRunnable);
}
public void startRecording() {
try {
recorder.start();
startTime = System.currentTimeMillis();
recording = true;
audioThread.start();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
}
public void stopRecording() {
runAudioThread = false;
if (recorder != null && recording) {
recording = false;
Log.v(LOG_TAG,
"Finishing recording, calling stop and release on recorder");
try {
recorder.stop();
recorder.release();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
recorder = null;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (recording) {
stopRecording();
}
finish();
return true;
}
return super.onKeyDown(keyCode, event);
}
// ---------------------------------------------
// audio thread, gets and encodes audio data
// ---------------------------------------------
class AudioRecordRunnable implements Runnable {
@Override
public void run() {
android.os.Process
.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
// Audio
int bufferSize;
short[] audioData;
int bufferReadResult;
bufferSize = AudioRecord
.getMinBufferSize(sampleAudioRateInHz,
AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT);
audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,
sampleAudioRateInHz, AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT, bufferSize);
audioData = new short[bufferSize];
Log.d(LOG_TAG, "audioRecord.startRecording()");
audioRecord.startRecording();
/* ffmpeg_audio encoding loop */
while (runAudioThread) {
// Log.v(LOG_TAG,"recording? " + recording);
bufferReadResult = audioRecord.read(audioData, 0,
audioData.length);
if (bufferReadResult > 0) {
Log.v(LOG_TAG, "bufferReadResult: " + bufferReadResult);
// If "recording" isn't true when start this thread, it
// never get's set according to this if statement...!!!
// Why? Good question...
if (recording) {
try {
recorder.record(ShortBuffer.wrap(audioData, 0,
bufferReadResult));
// Log.v(LOG_TAG,"recording " + 1024*i + " to " +
// 1024*i+1024);
} catch (FFmpegFrameRecorder.Exception e) {
Log.v(LOG_TAG, e.getMessage());
e.printStackTrace();
}
}
}
}
Log.v(LOG_TAG, "AudioThread Finished, release audioRecord");
/* encoding finish, release recorder */
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
Log.v(LOG_TAG, "audioRecord released");
}
}
}
// ---------------------------------------------
// camera thread, gets and encodes video data
// ---------------------------------------------
class CameraView extends SurfaceView implements SurfaceHolder.Callback,
PreviewCallback {
private SurfaceHolder mHolder;
private Camera mCamera;
public CameraView(Context context, Camera camera) {
super(context);
Log.w("camera", "camera view");
mCamera = camera;
mHolder = getHolder();
mHolder.addCallback(CameraView.this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mCamera.setPreviewCallback(CameraView.this);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
stopPreview();
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
Log.v(LOG_TAG, "Setting imageWidth: " + imageWidth
+ " imageHeight: " + imageHeight + " frameRate: "
+ frameRate);
Camera.Parameters camParams = mCamera.getParameters();
camParams.setPreviewSize(imageWidth, imageHeight);
Log.v(LOG_TAG,
"Preview Framerate: " + camParams.getPreviewFrameRate());
camParams.setPreviewFrameRate(frameRate);
mCamera.setParameters(camParams);
startPreview();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
try {
mHolder.addCallback(null);
mCamera.setPreviewCallback(null);
} catch (RuntimeException e) {
// The camera has probably just been released, ignore.
}
}
public void startPreview() {
if (!isPreviewOn && mCamera != null) {
isPreviewOn = true;
mCamera.startPreview();
}
}
public void stopPreview() {
if (isPreviewOn && mCamera != null) {
isPreviewOn = false;
mCamera.stopPreview();
}
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
/* get video data */
if (yuvIplimage != null && recording) {
yuvIplimage.getByteBuffer().put(data);
Log.v(LOG_TAG, "Writing Frame");
try {
long t = 1000 * (System.currentTimeMillis() - startTime);
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
recorder.record(yuvIplimage);
} catch (FFmpegFrameRecorder.Exception e) {
Log.v(LOG_TAG, e.getMessage());
e.printStackTrace();
}
}
}
}
@Override
public void onClick(View v) {
if (!recording) {
startRecording();
Log.w(LOG_TAG, "Start Button Pushed");
btnRecorderControl.setText("Stop");
} else {
// This will trigger the audio recording loop to stop and then set
// isRecorderStart = false;
stopRecording();
Log.w(LOG_TAG, "Stop Button Pushed");
btnRecorderControl.setText("Start");
}
}
}Anyone know how to fix it ?
Thanks in advance !
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