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Android recording video with overlay view [way 2]
2 mars 2016, par t0mI am trying app in android which have functionality to capture video with overlay views. I tried two ways (1. and 2.).
1. Via SurfaceView and JavaCV with FFmpeg.
2. Via OpenCV and JavaCV with FFmpeg.
3. For API21+ maybe with MediaProjection.(Question is divided to two questions, due to stackoverflow length limit.)
ad 1. Via SurfaceView and JavaCV with FFmpeg :
ad 2. Via OpenCV and JavaCV with FFmpeg :
OpenCVCameraActivity.java :
import android.app.Activity;
import android.hardware.Camera;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.SubMenu;
import android.view.SurfaceView;
import android.view.View;
import android.view.WindowManager;
import android.widget.Toast;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.Frame;
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Mat;
import java.io.File;
import java.nio.ByteBuffer;
import java.nio.ShortBuffer;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.ListIterator;
@SuppressWarnings("ALL")
public class OpenCVCameraActivity extends Activity implements
CameraBridgeViewBase.CvCameraViewListener2,
View.OnTouchListener {
//name of activity, for DEBUGGING
private static final String TAG = OpenCVCameraActivity.class.getSimpleName();
private OpenCVCameraPreview mOpenCvCameraView;
private List mResolutionList;
private MenuItem[] mEffectMenuItems;
private SubMenu mColorEffectsMenu;
private MenuItem[] mResolutionMenuItems;
private SubMenu mResolutionMenu;
private static long frameCounter = 0;
long startTime = 0;
private Mat edgesMat;
boolean recording = false;
private int sampleAudioRateInHz = 44100;
private int imageWidth = 1280;
private int imageHeight = 720;
private int frameRate = 30;
private Frame yuvImage = null;
private File ffmpeg_link;
private FFmpegFrameRecorder recorder;
/*audio data getting thread */
private AudioRecord audioRecord;
private AudioRecordRunnable audioRecordRunnable;
private Thread audioThread;
volatile boolean runAudioThread = true;
ShortBuffer[] samples;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
Log.i(TAG, "OpenCV loaded successfully");
mOpenCvCameraView.enableView();
mOpenCvCameraView.setOnTouchListener(OpenCVCameraActivity.this);
break;
default:
super.onManagerConnected(status);
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(Static.DEBUG) Log.i(TAG, "onCreate()");
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
Thread.setDefaultUncaughtExceptionHandler(uncaughtExceptionHandler);
try {
setContentView(R.layout.activity_opencv);
mOpenCvCameraView = (OpenCVCameraPreview) findViewById(R.id.openCVCameraPreview);
mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
mOpenCvCameraView.setCvCameraViewListener(this);
mOpenCvCameraView.enableFpsMeter();
ffmpeg_link = new File(Environment.getExternalStorageDirectory(), "stream.mp4");
} catch (Exception e){
e.printStackTrace();
}
}
private Thread.UncaughtExceptionHandler uncaughtExceptionHandler =
new Thread.UncaughtExceptionHandler() {
public void uncaughtException(Thread thread, Throwable ex) {
if(Static.DEBUG) Log.e(TAG, "Uncaught exception", ex);
}
};
@Override
protected void onRestart() {
if (Static.DEBUG) Log.i(TAG, "onRestart()");
super.onRestart();
}
@Override
protected void onStart() {
if (Static.DEBUG) Log.i(TAG, "onStart()");
super.onStart();
}
@Override
protected void onResume() {
if (Static.DEBUG) Log.i(TAG, "onResume()");
super.onResume();
if (!OpenCVLoader.initDebug()) {
Log.i(TAG, "Internal OpenCV library not found. Using OpenCV Manager for initialization");
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_1_0, this, mLoaderCallback);
} else {
Log.i(TAG, "OpenCV library found inside package. Using it!");
mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (Static.DEBUG) Log.i(TAG, "onCreateOptionsMenu()");
super.onCreateOptionsMenu(menu);
List<string> effects = mOpenCvCameraView.getEffectList();
if (effects == null) {
Log.e(TAG, "Color effects are not supported by device!");
return true;
}
mColorEffectsMenu = menu.addSubMenu("Color Effect");
mEffectMenuItems = new MenuItem[effects.size()];
int idx = 0;
ListIterator<string> effectItr = effects.listIterator();
while(effectItr.hasNext()) {
String element = effectItr.next();
mEffectMenuItems[idx] = mColorEffectsMenu.add(1, idx, Menu.NONE, element);
idx++;
}
mResolutionMenu = menu.addSubMenu("Resolution");
mResolutionList = mOpenCvCameraView.getResolutionList();
mResolutionMenuItems = new MenuItem[mResolutionList.size()];
ListIterator resolutionItr = mResolutionList.listIterator();
idx = 0;
while(resolutionItr.hasNext()) {
Camera.Size element = resolutionItr.next();
mResolutionMenuItems[idx] = mResolutionMenu.add(2, idx, Menu.NONE,
Integer.valueOf(element.width).toString() + "x" + Integer.valueOf(element.height).toString());
idx++;
}
return true;
}
@Override
protected void onPause() {
if (Static.DEBUG) Log.i(TAG, "onPause()");
super.onPause();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
@Override
protected void onStop() {
if (Static.DEBUG) Log.i(TAG, "onStop()");
super.onStop();
}
@Override
protected void onDestroy() {
if (Static.DEBUG) Log.i(TAG, "onDestroy()");
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
++frameCounter;
//Log.i(TAG, "Frame number: "+frameCounter);
final Mat rgba = inputFrame.rgba();
//Core.flip(rgba, rgba, 1);
/*if(Static.DEBUG) Log.i(TAG,"rgba.total(): "+rgba.total());
if(Static.DEBUG) Log.i(TAG,"rgba.channels(): " +rgba.channels());*/
byte[] data = new byte[(int) (rgba.total() * rgba.channels())];
rgba.get(0, 0, data);
//if(Static.DEBUG) Log.i(TAG,"return_buff: "+return_buff.length);
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = System.currentTimeMillis();
return rgba;
}
// get video data
if (yuvImage != null && recording) {
ByteBuffer b = (ByteBuffer)yuvImage.image[0].position(0);
b.put(data);
try {
long t = 1000 * (System.currentTimeMillis() - startTime);
if(Static.DEBUG) Log.i(TAG,"Writing Frame on timestamp: "+t);
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
recorder.record(yuvImage);
} catch (FFmpegFrameRecorder.Exception e) {
if(Static.DEBUG) Log.i(TAG,e.getMessage());
e.printStackTrace();
}
}
return rgba;
}
@Override
public void onCameraViewStarted(int width, int height) {
edgesMat = new Mat();
}
@Override
public void onCameraViewStopped() {
if (edgesMat != null)
edgesMat.release();
edgesMat = null;
}
public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "called onOptionsItemSelected; selected item: " + item);
if (item.getGroupId() == 1)
{
mOpenCvCameraView.setEffect((String) item.getTitle());
Toast.makeText(this, mOpenCvCameraView.getEffect(), Toast.LENGTH_SHORT).show();
} else if (item.getGroupId() == 2) {
int id = item.getItemId();
Camera.Size resolution = mResolutionList.get(id);
mOpenCvCameraView.setResolution(resolution);
resolution = mOpenCvCameraView.getResolution();
String caption = Integer.valueOf(resolution.width).toString() + "x" + Integer.valueOf(resolution.height).toString();
Toast.makeText(this, caption, Toast.LENGTH_SHORT).show();
}
return true;
}
@Override
public boolean onTouch(View v, MotionEvent event) {
Log.i(TAG,"onTouch event");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss");
String currentDateandTime = sdf.format(new Date());
String fileName = Environment.getExternalStorageDirectory().getPath() +
"/sample_picture_" + currentDateandTime + ".jpg";
mOpenCvCameraView.takePicture(fileName);
Toast.makeText(this, fileName + " saved", Toast.LENGTH_SHORT).show();
return false;
}
/**
* Click to ImageButton to start recording.
*/
public void onClickBtnStartRecord2(View v) {
if (Static.DEBUG) Log.i(TAG, "onClickBtnStartRecord()");
if(!recording)
startRecording();
else
stopRecording();
}
private void startRecording() {
if (Static.DEBUG) Log.i(TAG, "startRecording()");
initRecorder();
try {
recorder.start();
startTime = System.currentTimeMillis();
recording = true;
audioThread.start();
if (Static.DEBUG) Log.i(TAG, "startRecording() success");
} catch(FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
}
private void stopRecording() {
if (Static.DEBUG) Log.i(TAG, "stopRecording()");
runAudioThread = false;
try {
audioThread.join();
} catch(InterruptedException e) {
e.printStackTrace();
}
audioRecordRunnable = null;
audioThread = null;
if (Static.DEBUG) Log.i(TAG, "stopRecording() 2");
if(recorder != null && recording) {
recording = false;
try {
recorder.stop();
recorder.release();
Log.i(TAG, "Finishing recording, calling stop and release on recorder");
} catch(FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
recorder = null;
}
}
//---------------------------------------
// initialize ffmpeg_recorder
//---------------------------------------
private void initRecorder() {
Log.i(TAG, "init recorder");
try {
if (yuvImage == null) {
yuvImage = new Frame(imageWidth, imageHeight, Frame.DEPTH_UBYTE, 4);
Log.i(TAG, "create yuvImage");
}
Log.i(TAG, "ffmpeg_url: " + ffmpeg_link.getAbsolutePath());
//Log.i(TAG, "ffmpeg_url: " + ffmpeg_link.exists());
recorder = new FFmpegFrameRecorder(ffmpeg_link, imageWidth, imageHeight, 1);
recorder.setFormat("mp4");
recorder.setSampleRate(sampleAudioRateInHz);
// Set in the surface changed method
recorder.setFrameRate(frameRate);
audioRecordRunnable = new AudioRecordRunnable();
audioThread = new Thread(audioRecordRunnable);
runAudioThread = true;
Log.i(TAG, "recorder initialize success");
} catch (Exception e){
e.printStackTrace();
}
}
//---------------------------------------------
// 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;
ShortBuffer 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 = ShortBuffer.allocate(bufferSize);
Log.d(TAG, "audioRecord.startRecording()");
audioRecord.startRecording();
// ffmpeg_audio encoding loop
while(runAudioThread) {
//Log.v(TAG,"recording? " + recording);
bufferReadResult = audioRecord.read(audioData.array(), 0, audioData.capacity());
audioData.limit(bufferReadResult);
if(bufferReadResult > 0) {
Log.v(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.recordSamples(audioData);
//Log.v(TAG,"recording " + 1024*i + " to " + 1024*i+1024);
} catch(FFmpegFrameRecorder.Exception e) {
Log.v(TAG, e.getMessage());
e.printStackTrace();
}
}
}
}
Log.v(TAG, "AudioThread Finished, release audioRecord");
// encoding finish, release recorder
if(audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
Log.v(TAG, "audioRecord released");
}
}
}
}
</string></string>OpenCVCameraPreview.java :
import android.content.Context;
import android.hardware.Camera;
import android.util.AttributeSet;
import android.util.Log;
import org.opencv.android.JavaCameraView;
import java.io.FileOutputStream;
import java.util.List;
public class OpenCVCameraPreview extends JavaCameraView implements Camera.PictureCallback {
private static final String TAG = OpenCVCameraPreview.class.getSimpleName();
private String mPictureFileName;
public OpenCVCameraPreview(Context context, AttributeSet attrs) {
super(context, attrs);
}
public List<string> getEffectList() {
return mCamera.getParameters().getSupportedColorEffects();
}
public boolean isEffectSupported() {
return (mCamera.getParameters().getColorEffect() != null);
}
public String getEffect() {
return mCamera.getParameters().getColorEffect();
}
public void setEffect(String effect) {
Camera.Parameters params = mCamera.getParameters();
params.setColorEffect(effect);
mCamera.setParameters(params);
}
public List getResolutionList() {
return mCamera.getParameters().getSupportedPreviewSizes();
}
public void setResolution(Camera.Size resolution) {
disconnectCamera();
mMaxHeight = resolution.height;
mMaxWidth = resolution.width;
connectCamera(getWidth(), getHeight());
}
public Camera.Size getResolution() {
return mCamera.getParameters().getPreviewSize();
}
public void takePicture(final String fileName) {
Log.i(TAG, "Taking picture");
this.mPictureFileName = fileName;
// Postview and jpeg are sent in the same buffers if the queue is not empty when performing a capture.
// Clear up buffers to avoid mCamera.takePicture to be stuck because of a memory issue
mCamera.setPreviewCallback(null);
// PictureCallback is implemented by the current class
mCamera.takePicture(null, null, this);
}
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.i(TAG, "Saving a bitmap to file");
// The camera preview was automatically stopped. Start it again.
mCamera.startPreview();
mCamera.setPreviewCallback(this);
// Write the image in a file (in jpeg format)
try {
FileOutputStream fos = new FileOutputStream(mPictureFileName);
fos.write(data);
fos.close();
} catch (java.io.IOException e) {
Log.e("PictureDemo", "Exception in photoCallback", e);
}
}
}
</string>activity_opencv.xml :
<?xml version="1.0" encoding="utf-8"?>
<relativelayout>
<ImageButton<br />
android:id="@+id/btnStartRecord2"<br />
android:layout_width="70dp"<br />
android:layout_height="70dp"<br />
android:scaleType="fitXY"<br />
android:src="@drawable/record_icon"<br />
android:background="@null"<br />
android:text="@string/btnStartRecord"<br />
android:onClick="onClickBtnStartRecord2"<br />
android:layout_centerVertical="true"<br />
android:layout_alignParentRight="true"<br />
android:layout_alignParentEnd="true"/>
</relativelayout>Overlay views working, but recorded video is without overlay views, and recording with
onCameraFramemethod is very slow. -
KLV data in RTP stream
18 septembre 2013, par ArdoramorI have implemented RFC6597 to stream KLV is RTP SMPTE336M packets. Currently, my SDP looks like this :
v=2
o=- 0 0 IN IP4 127.0.0.1
s=Unnamed
i=N/A
c=IN IP4 192.168.1.6
t=0 0
a=recvonly
m=video 8202 RTP/AVP 96
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=428028;sprop-parameter-sets=Z0KAKJWgKA9E,aM48gA==;
a=control:trackID=0
m=application 8206 RTP/AVP 97
a=rtpmap:97 smpte336m/1000
a=control:trackID=1I try to remux the RTP stream with FFmpeg like so :
ffmpeg.exe -i test.sdp -map 0:0 -map 0:1 -c:v copy -c:d copy test.m2tsI get the following output with FFmpeg :
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 28 2013 00:34:08 with gcc 4.8.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[aac @ 0000000002137900] Sample rate index in program config element does not match the sample rate index configured by the container.
Last message repeated 1 times
[aac @ 0000000002137900] decode_pce: Input buffer exhausted before END element found
[h264 @ 00000000002ce540] Missing reference picture, default is 0
[h264 @ 00000000002ce540] decode_slice_header error
[sdp @ 00000000002cfa80] Estimating duration from bitrate, this may be inaccurate
Input #0, sdp, from 'C:\Users\dragan\Documents\Workspace\Android\uvlens\tests\test.sdp':
Metadata:
title : Unnamed
comment : N/A
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Audio: aac, 32000 Hz, 58 channels, fltp
Stream #0:1: Video: h264 (Baseline), yuv420p, 640x480, 14.83 tbr, 90k tbn, 180k tbc
Stream #0:2: Data: none
File 'C:\Users\dragan\Documents\Workspace\Android\uvlens\tests\test.m2ts' already exists. Overwrite ? [y/N] y
Output #0, mpegts, to 'C:\Users\dragan\Documents\Workspace\Android\uvlens\tests\test.m2ts':
Metadata:
title : Unnamed
comment : N/A
encoder : Lavf54.63.104
Stream #0:0: Video: h264, yuv420p, 640x480, q=2-31, 90k tbn, 90k tbc
Stream #0:1: Data: none
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mpegts @ 0000000002159940] Application provided invalid, non monotonically increasing dts to muxer in stream 1: 8583659665 >= 8583656110
av_interleaved_write_frame(): Invalid argumentThe problem is that KLV stream packets do not contain have a DTS field. According to the RFC6597 STMPE336M, RTP packet structure is the same as a standard structure :
4.1. RTP Header Usage
This payload format uses the RTP packet header fields as described in
the table below:
+-----------+-------------------------------------------------------+
| Field | Usage |
+-----------+-------------------------------------------------------+
| Timestamp | The RTP Timestamp encodes the instant along a |
| | presentation timeline that the entire KLVunit encoded |
| | in the packet payload is to be presented. When one |
| | KLVunit is placed in multiple RTP packets, the RTP |
| | timestamp of all packets comprising that KLVunit MUST |
| | be the same. The timestamp clock frequency is |
| | defined as a parameter to the payload format |
| | (Section 6). |
| | |
| M-bit | The RTP header marker bit (M) is used to demarcate |
| | KLVunits. Senders MUST set the marker bit to '1' for |
| | any RTP packet that contains the final byte of a |
| | KLVunit. For all other packets, senders MUST set the |
| | RTP header marker bit to '0'. This allows receivers |
| | to pass a KLVunit for parsing/decoding immediately |
| | upon receipt of the last RTP packet comprising the |
| | KLVunit. Without this, a receiver would need to wait |
| | for the next RTP packet with a different timestamp to |
| | arrive, thus signaling the end of one KLVunit and the |
| | start of another. |
+-----------+-------------------------------------------------------+
The remaining RTP header fields are used as specified in [RFC3550].Header from RFC3550 :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|V=2|P|X| CC |M| PT | sequence number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| timestamp |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| synchronization source (SSRC) identifier |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
| contributing source (CSRC) identifiers |
| .... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+RFC's note about placement of KLV data into RTP packet :
KLVunits small enough to fit into a single RTP
packet (RTP packet size is up to the implementation but should
consider underlying transport/network factors such as MTU
limitations) are placed directly into the payload of the RTP packet,
with the first byte of the KLVunit (which is the first byte of a KLV
Universal Label Key) being the first byte of the RTP packet payload.My question is where does FFmpeg keep looking for the DTS ?
Does it interpret the Timestamp field of the RTP packet header as DTS ? If so, I've verified that the timestamps increase (although at different rates) but are not equal to what FFmpeg prints out :
8583659665 >= 8583656110
-
Android recording video with overlay view [way 1]
2 mars 2016, par t0mI am trying app in android which have functionality to capture video with overlay views. I tried two ways (1. and 2.).
1. Via SurfaceView and JavaCV with FFmpeg.
2. Via OpenCV and JavaCV with FFmpeg.
3. For API21+ maybe with MediaProjection.(Question is divided to two questions, due to stackoverflow length limit.)
ad 1. Via SurfaceView and JavaCV with FFmpeg :
OpenCVCameraActivity.java :
import android.app.Activity;
import android.content.Context;
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.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.Toast;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.Frame;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ShortBuffer;
import java.util.List;
@SuppressWarnings("ALL")
public class OpenCVCameraActivity extends Activity {
private static final String TAG = OpenCVCameraActivity.class.getSimpleName();
private long startTime = 0;
private boolean isPreviewOn = false;
private int sampleAudioRateInHz = 44100;
private Camera.Size previewSize; //preview and Camera and Recorder width and height
private int recorderFrameRate = 25;
// audio data getting thread
private AudioRecord audioRecord;
private AudioRecordRunnable audioRecordRunnable;
private Thread audioThread;
private volatile boolean runAudioThread = true;
// video data getting thread
private Camera mCamera;
private CameraView mPreview;
private FFmpegFrameRecorder recorder;
private boolean recording = false;
private Frame yuvImage = null;
//storage
private Storage storage;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(Static.DEBUG) Log.i(TAG, "onCreate()");
Thread.setDefaultUncaughtExceptionHandler(uncaughtExceptionHandler);
setContentView(R.layout.activity_opencv);
prepareCamera();
}
private Thread.UncaughtExceptionHandler uncaughtExceptionHandler =
new Thread.UncaughtExceptionHandler() {
public void uncaughtException(Thread thread, Throwable ex) {
if(Static.DEBUG) Log.e(TAG, "Uncaught exception", ex);
}
};
@Override
protected void onRestart() {
super.onRestart();
if (Static.DEBUG) Log.i(TAG, "onRestart()");
}
@Override
protected void onStart() {
super.onStart();
if (Static.DEBUG) Log.i(TAG, "onStart()");
}
@Override
protected void onResume() {
super.onResume();
if (Static.DEBUG) Log.i(TAG, "onResume()");
storage = new Storage(this);
if(storage.mExternalStorageAvailable == true && storage.mExternalStorageWriteable == false)
Static.showToast(this, getString(R.string.errExternalStorageReadOnly), Toast.LENGTH_LONG);
else if (storage.mExternalStorageAvailable == false && storage.mExternalStorageWriteable == false)
Static.showToast(this, getString(R.string.errExternalStorage), Toast.LENGTH_LONG);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (Static.DEBUG) Log.i(TAG, "onCreateOptionsMenu()");
return super.onCreateOptionsMenu(menu);
}
@Override
protected void onPause() {
super.onPause();
if (Static.DEBUG) Log.i(TAG, "onPause()");
}
@Override
protected void onStop() {
super.onStop();
if (Static.DEBUG) Log.i(TAG, "onStop()");
}
@Override
protected void onDestroy() {
super.onDestroy();
if (Static.DEBUG) Log.i(TAG, "onDestroy()");
recording = false;
if (mPreview != null) {
mPreview.stopPreview();
}
if (mCamera != null) {
mCamera.stopPreview();
mCamera.release();
mCamera = null;
}
}
/** Prepare camera object.
* */
private void prepareCamera() {
//1. Open camera object
try {
mCamera = getCameraInstance(this);
} catch (Exception e) {
e.printStackTrace();
Static.showToast(this, e.getMessage(), Toast.LENGTH_LONG);
finish();
return;
}
setOptimalCameraParams();
//2. Connect Preview + 3. Start Preview + 8e Stop preview v metode surfaceChanged
mPreview = new CameraView(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.cameraPreview);
preview.addView(mPreview); //surfaceView to FrameLayout
if(Static.DEBUG) Log.i(TAG, "camera preview start: OK");
}
/**
* A safe way to get an instance of the Camera object.
*/
@SuppressWarnings("deprecation")
public static Camera getCameraInstance(Context ctx) throws Exception {
Camera c = Camera.open();
if (c == null)
throw new Exception(ctx.getString(R.string.errCameraNotAvailable));
if(Static.DEBUG) Log.i(TAG, "camera open");
return c; // attempt to get a Camera instance, otherwise null
}
/**Method set optmial parameters. Depend on HW possibilities.*/
@SuppressWarnings("deprecation")
private void setOptimalCameraParams(){
// Camera parameters
Camera.Parameters params = mCamera.getParameters();
List<string> focusModes = params.getSupportedFocusModes();
if (Static.DEBUG) Log.i(TAG, "focusModes():" + focusModes.toString());
if (Static.DEBUG) Log.i(TAG, "Camera parameters:\n" + params.flatten());
params.setRecordingHint(true); //MediaRecorder.start() to start faster
//Automatically autofocus if it's possible
if (params.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
} else if (focusModes.contains(Camera.Parameters.FOCUS_MODE_AUTO)) { //at least focus auto
params.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
}
// set Camera parameters
mCamera.setParameters(params);
}
//---------------------------------------
// initialize ffmpeg_recorder
//---------------------------------------
private void initRecorder() throws Exception {
if(Static.DEBUG) Log.i(TAG,"init recorder");
File output = null;
try {
output = storage.getOutputMediaFile(storage.MEDIA_TYPE_VIDEO);
if(output == null)
throw new Exception();
} catch (Exception e) {
e.printStackTrace();
throw new Exception(getString(R.string.errSetOutputFile));
}
if (yuvImage == null) {
yuvImage = new Frame(previewSize.width, previewSize.height, Frame.DEPTH_UBYTE, 2);
if(Static.DEBUG) Log.i(TAG, "create yuvImage");
}
if(Static.DEBUG) Log.i(TAG, "ffmpeg_url: " + output.getPath());
recorder = new FFmpegFrameRecorder(output.getPath(), previewSize.width, previewSize.height, 1);
//recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
//recorder.setVideoOption("preset", "veryfast"); // or ultrafast or fast, etc.
//recorder.setVideoQuality(0); // maximum quality, replace recorder.setVideoBitrate(16384);
//recorder.setPixelFormat(avutil.AV_PIX_FMT_YUV420P);
recorder.setFormat("mp4");
recorder.setSampleRate(sampleAudioRateInHz);
recorder.setFrameRate(recorderFrameRate);
if(Static.DEBUG) Log.i(TAG, "recorder initialize success");
audioRecordRunnable = new AudioRecordRunnable();
audioThread = new Thread(audioRecordRunnable);
runAudioThread = true;
}
public void startRecording() {
try {
initRecorder();
} catch (Exception e){
e.printStackTrace();
Static.showToast(this, e.getMessage(), Toast.LENGTH_LONG);
}
try {
recorder.start();
startTime = System.currentTimeMillis();
recording = true;
audioThread.start();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
}
public void stopRecording() {
runAudioThread = false;
try {
audioThread.join();
} catch (InterruptedException e) {
// reset interrupt to be nice
Thread.currentThread().interrupt();
return;
}
audioRecordRunnable = null;
audioThread = null;
if (recorder != null && recording) {
recording = false;
if(Static.DEBUG) Log.i(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);
}
public void onClickBtnStartRecord(View v) {
if (!recording) {
startRecording();
if(Static.DEBUG) Log.i(TAG, "Start Button Pushed");
} else {
// This will trigger the audio recording loop to stop and then set isRecorderStart = false;
stopRecording();
if(Static.DEBUG) Log.i(TAG, "Stop Button Pushed");
}
}
//---------------------------------------------
// 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;
ShortBuffer 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 = ShortBuffer.allocate(bufferSize);
if(Static.DEBUG) Log.i(TAG, "audioRecord.startRecording()");
audioRecord.startRecording();
/* ffmpeg_audio encoding loop */
while (runAudioThread) {
//if(Static.DEBUG) Log.i(TAG,"recording? " + recording);
bufferReadResult = audioRecord.read(audioData.array(), 0, audioData.capacity());
audioData.limit(bufferReadResult);
if (bufferReadResult > 0) {
//if(Static.DEBUG) Log.i(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.recordSamples(audioData);
//if(Static.DEBUG) Log.i(TAG,"recording " + 1024*i + " to " + 1024*i+1024);
} catch (FFmpegFrameRecorder.Exception e) {
if(Static.DEBUG) Log.i(TAG,e.getMessage());
e.printStackTrace();
}
}
}
}
if(Static.DEBUG) Log.i(TAG,"AudioThread Finished, release audioRecord");
/* encoding finish, release recorder */
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
if(Static.DEBUG) Log.i(TAG,"audioRecord released");
}
}
}
/**TODO*/
private Camera.Size getBestPreviewSize(int width, int height, Camera.Parameters parameters) {
Camera.Size result=null;
for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
if(Static.DEBUG) Log.i(TAG, size.width + "/" + size.height);
if (size.width<=width && size.height<=height) {
if (result==null) {
result=size;
} else {
int resultArea=result.width*result.height;
int newArea=size.width*size.height;
if (newArea>resultArea) {
result=size;
}
}
}
}
return(result);
}
//---------------------------------------------
// camera thread, gets and encodes video data
//---------------------------------------------
private class CameraView extends SurfaceView implements SurfaceHolder.Callback, PreviewCallback {
private final String TAG = CameraView.class.getSimpleName();
private SurfaceHolder mHolder;
private Camera mCamera;
public CameraView(Context context, Camera camera) {
super(context);
if(Static.DEBUG) Log.i(TAG, "camera view");
mCamera = camera;
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
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 w, int h) {
if(Static.DEBUG) Log.i(TAG, "surfaceChanged() => w=" + w + ", h=" + h);
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
if (mHolder.getSurface() == null){
// preview surface does not exist
return;
}
// stop preview before making changes
try {
stopPreview();
} catch (Exception e){
// ignore: tried to stop a non-existent preview
}
// start preview with new settings
try {
Camera.Parameters params = mCamera.getParameters();
previewSize = getBestPreviewSize(w, h, params);
if(Static.DEBUG) Log.i(TAG, "getBestPreviewSize() => w=" + previewSize.width + ", h=" + previewSize.height);
if (previewSize != null)
params.setPreviewSize(previewSize.width, previewSize.height);
params.setPreviewFrameRate(recorderFrameRate);
if(Static.DEBUG) Log.i(TAG,"Preview Framerate: " + params.getPreviewFrameRate());
mCamera.setParameters(params);
mCamera.setPreviewDisplay(holder);
mCamera.setPreviewCallback(CameraView.this);
startPreview();
} catch (Exception e){
if(Static.DEBUG) Log.i(TAG, "Could not set preview display in surfaceChanged");
e.printStackTrace();
}
}
@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) {
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = System.currentTimeMillis();
return;
}
// get video data
if (yuvImage != null && recording) {
((ByteBuffer)yuvImage.image[0].position(0)).put(data);
try {
long t = 1000 * (System.currentTimeMillis() - startTime);
if(Static.DEBUG) Log.i(TAG,"Writing Frame on timestamp: "+t);
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
recorder.record(yuvImage);
} catch (FFmpegFrameRecorder.Exception e) {
if(Static.DEBUG) Log.i(TAG,e.getMessage());
e.printStackTrace();
}
}
}
}
}
</string>activity_opencv.xml :
<?xml version="1.0" encoding="utf-8"?>
<relativelayout>
<framelayout>
</framelayout>
<ImageButton<br />
android:id="@+id/btnStartRecord"<br />
android:layout_width="70dp"<br />
android:layout_height="70dp"<br />
android:scaleType="fitXY"<br />
android:src="@drawable/record_icon"<br />
android:background="@null"<br />
android:text="@string/btnStartRecord"<br />
android:onClick="onClickBtnStartRecord"<br />
android:clickable="true"<br />
android:layout_centerVertical="true"<br />
android:layout_alignParentRight="true"<br />
android:layout_alignParentEnd="true"/>
<textview></textview>
</relativelayout>Overlay views working, but recorded video is without overlay views.
2. Via OpenCV and JavaCV with FFmpeg :
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