There must be something I'm missing witht this CamcorderProfile as I keep getting "11-15 01:00:53.185: E/MediaRecorder(976): setOutputFormat called in an invalid state: 1
" on "recorder.setProfile(profile);"
package com.apress.proandroidmedia.ch1.cameraintent;
import java.io.IOException;
import android.app.Activity;
import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class JustRecord extends Activity implements SurfaceHolder.Callback{
SurfaceView cameraView;
SurfaceHolder surfaceHolder;
Camera camera;
MediaRecorder recorder;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
cameraView = (SurfaceView) findViewById(R.id.CameraView);
surfaceHolder = cameraView.getHolder();
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
surfaceHolder.addCallback(this);
}
#Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
try{
camera = Camera.open(Camera.CameraInfo.CAMERA_FACING_FRONT);
camera.setDisplayOrientation(90);
}
catch (Exception exception){
camera.release();
exception.printStackTrace();
}
recorder = new MediaRecorder();
recorder.setCamera(camera);
CamcorderProfile profile = CamcorderProfile.get(Camera.CameraInfo.CAMERA_FACING_FRONT, CamcorderProfile.QUALITY_HIGH);
if(profile != null) {
recorder.setProfile(profile);
}else {
//default to basic H263 and AMR_NB if profile not found
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
}
recorder.setOutputFile("/sdcard/videocapture_example.mp4");
recorder.setMaxDuration(5000); // 50 seconds
prepareRecorder();
recorder.start();
}
#Override
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub
//camera.stopPreview();
recorder.stop();
recorder.release();
camera.release();
}
private void prepareRecorder() {
recorder.setPreviewDisplay(surfaceHolder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
finish();
} catch (IOException e) {
e.printStackTrace();
finish();
}
}
}
Any ideas?
Thanks!
EDIT: I might as well add that the code works just fine if I type in the codecs and such. It's just that I cant determine the best quality for some reason.
I managed to solve that one by actually starting to think for a change...
When you look at the MediaRecorder flow chart the first thing you see is the AudioSource and VideoSource defined. Moreover, those 2 are obviously NOT defined when using a CamcorderProfile. Yet after defining those 2 lines MediaRecorder still refused to start. What was missing here is "camera.unlock()" as my camera was "taken" sort of speak on previous tests.
Related
I want to simply take a photo in android (actually with an overlay image....but do it later, I am now failing in the first step...), the log catch an error of 'start preview failed'. The following is my code:
package com.example.camera_test;
import java.io.IOException;
import android.app.Activity;
import android.hardware.Camera;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class CameraFilming extends Activity implements SurfaceHolder.Callback{
private Camera camera = null;
private SurfaceView preview;
private SurfaceHolder holder;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.camera);
((Setting)getApplication()).getDeviceDisplaySize();
preview = (SurfaceView)findViewById(R.id.camera_surface);
holder = preview.getHolder();
holder.addCallback(this);
}
private void startCamera(){
camera = Camera.open();
}
#Override
public void onBackPressed(){
super.onBackPressed();
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
try {
startCamera();
camera.setPreviewDisplay(holder);
camera.startPreview();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
camera.stopPreview();
camera.release();
camera = null;
}
}
I run it on a real device and then it gets no problem...conclusion: don't do camera simulation on an AVD emulator!!!
I am trying to make a simple video recorder app in which I specify the maximum file size as a given number. The application as such works fine but I am not able to display a toast informing the user that the video clip has been saved, once the recording is complete. This is my code:
package com.example.videocapture2;
import java.io.IOException;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity implements SurfaceHolder.Callback,android.media.MediaRecorder.OnInfoListener{
MediaRecorder recorder;
SurfaceHolder holder;
Button Rec = null;
boolean recording = false;
int count =1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
recorder = new MediaRecorder();
initRecorder();
setContentView(R.layout.activity_main);
SurfaceView cameraView = (SurfaceView) findViewById(R.id.videoview);
holder = cameraView.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
//recorder.start();
//cameraView.setClickable(true);
// cameraView.setOnClickListener(this);
Rec = (Button)findViewById(R.id.mybutton);
Rec.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (recording) {
recorder.stop();
recording = false;
// Let's initRecorder so we can record again
initRecorder();
prepareRecorder();
} else {
recording = true;
recorder.start();
}
}
});
}
private void initRecorder() {
recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
CamcorderProfile cpHigh = CamcorderProfile
.get(CamcorderProfile.QUALITY_HIGH);
recorder.setProfile(cpHigh);
recorder.setOutputFile("/sdcard/videocapture_example"+count+".mp4");
recorder.setMaxDuration(50000); // 50 seconds
recorder.setMaxFileSize(2*1048576); // Approximately 2 megabytes
count++;
}
private void prepareRecorder() {
recorder.setPreviewDisplay(holder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
finish();
} catch (IOException e) {
e.printStackTrace();
finish();
}
}
public void surfaceCreated(SurfaceHolder holder) {
prepareRecorder();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
public void surfaceDestroyed(SurfaceHolder holder) {
if (recording) {
recorder.stop();
recording = false;
}
recorder.release();
//Toast.makeText(getApplicationContext(), "Video is saved", Toast.LENGTH_LONG).show();
//finish();
}
#Override
public void onInfo(MediaRecorder mr, int what, int extra) {
// TODO Auto-generated method stub
System.out.println("Reached onInfoListener");
if(what==android.media.MediaRecorder.MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED)
{
Toast.makeText(getApplicationContext(), "Video clip recorded", Toast.LENGTH_LONG).show();
}
}
}
I found out that due to the
recorder.setMaxFileSize(2*1048576); // Approximately 2 megabytes
in initRecorder() method, once the specified file size is reached, notification is sent to the OnInfoListener with a particular what code. So I overrode the method in my MainActivity, however, the toast doesn't display after the video file is completely recorded, though I am able to access the video clip and play it.
What should I do display this toast in the above mentioned conditions?
I think you haven't assigned the onInfoListener. i.e. you need to:
recorder.setOnInfoListener(this);
since your activity extends MediaRecorder.OnInfoListener
I am new to Android I have written a small program to take pictures and save them in the internal memory disk. My program is successfully launched but when I take pictures no data is written to the memory disk.
Below is my code. What am I missing?
package com.lab2;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import android.os.Environment;
public class Lab2_cameraActivity extends Activity implements SurfaceHolder.Callback {
/** Called when the activity is first created. */
private Camera mCamera;
private SurfaceHolder mHolder;
private SurfaceView mSurfaceView;
private Button mbutton1;
private ShutterCallback shutter;
private PictureCallback raw;
private PictureCallback postview;
AutoFocusCallback AFCallback = new AutoFocusCallback(){
#Override
public void onAutoFocus(boolean success, Camera camera) {
// TODO Auto-generated method stub
if (success){
mCamera.takePicture(shutter, raw, postview, jpeg);//take photo
}else{
Toast.makeText(Lab2_cameraActivity.this, "in else...",Toast.LENGTH_LONG).show();
}
}
};
/*jpeg callback occurs when the compressed image is available*/
PictureCallback jpeg = new PictureCallback(){
#Override
public void onPictureTaken(byte[] data, Camera camera) {
// TODO Auto-generated method stub
FileOutputStream outStream = null;
File file = new File("/mnt/sdcard/");
try {
outStream = new FileOutputStream(file.toString()+"photo.jpg");
outStream.write(data);
outStream.close();
Toast.makeText(Lab2_cameraActivity.this, "Photo Saved...",Toast.LENGTH_LONG).show();
mCamera.startPreview();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
/*when surface destroyed, stop preview*/
if(mCamera != null){
mCamera.stopPreview();
mCamera.release();//release camera resources
mCamera = null;
}
}
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
mCamera = Camera.open();//open camera
try {
mCamera.setPreviewDisplay(holder);//set surface to display
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// TODO Auto-generated method stub
/*when surface changed, reset camera parameters for preview*/
mCamera.getParameters();//get default parameters
Camera.Parameters parameters= mCamera.getParameters();
/*you can set your own parameters in there*/
mCamera.setParameters(parameters);//set parameters if parameters has been changed
mCamera.startPreview();
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mbutton1 = (Button)findViewById(R.id.button1);
mSurfaceView = (SurfaceView)findViewById(R.id.surfaceView);
mHolder = mSurfaceView.getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mbutton1.setOnClickListener(new Button.OnClickListener()
{
#Override
public void onClick(View v) {
mCamera.autoFocus(AFCallback);
}
});
}
}
you should not specify '/mnt/whatever/' path to your sdcard, use getExternalFilesDir() to get the correct path.
your callback is not called, unless you specify it in mCamera.takePicture(null, null, jpeg);
do you really have
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE">
in your AndroidManifest.xml file?
I'm learning how to program the video camera in android and wrote a very basic program (XML with SurfaceView and two buttons, one to start, one to stop video recording). Video Preview works fine, but after clicking the start_video button I'm getting an IllegalStateException in line 71 mediaRecorder.setVideoFrameRate(videoFramesPerSecond);:
IllegalStateException.<init>() line: 33
MediaRecorder.setVideoFrameRate(int) line: not available [native method]
CamtestActivity$2.onClick(View) line: 71
. I can't understand why this line is throwing this exception while the former line for example, does not.
Any hints? Thanks.
package com.grapp.camtest;
import java.io.IOException;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.hardware.Camera;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;
public class CamtestActivity extends Activity implements SurfaceHolder.Callback{
private static final String TAG = "Camera-Tutorial";
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
private Camera camera;
private boolean previewRunning;
private MediaRecorder mediaRecorder;
private final int maxDurationInMs = 20000;
private final int videoFramesPerSecond = 20;
#Override
public 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.main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
surfaceView = (SurfaceView) findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Button start_video = (Button) findViewById(R.id.start_video);
Button stop_video = (Button) findViewById(R.id.stop_video);
stop_video.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mediaRecorder.stop();
camera.lock();
}
});
start_video.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
try {
camera.unlock();
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mediaRecorder.setMaxDuration(maxDurationInMs);
mediaRecorder.setVideoFrameRate(videoFramesPerSecond);
mediaRecorder.setVideoSize(surfaceView.getWidth(), surfaceView.getHeight());
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
mediaRecorder.setOutputFile("/sdcard/video.mp4");
mediaRecorder.prepare();
mediaRecorder.start();
} catch (IllegalStateException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
} catch (IOException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
}
}
});
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
camera = Camera.open();
if (camera != null){
Camera.Parameters params = camera.getParameters();
camera.setParameters(params);
}
else {
Toast.makeText(getApplicationContext(), "Camera not available!", Toast.LENGTH_LONG).show();
finish();
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (previewRunning){
camera.stopPreview();
}
Camera.Parameters p = camera.getParameters();
p.setPreviewSize(width, height);
camera.setParameters(p);
try {
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
}
catch (IOException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
}
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
camera.stopPreview();
previewRunning = false;
camera.release();
}
}
From the documentation for setVideoFrameRate():
Sets the frame rate of the video to be captured.
Must be called after setVideoSource().
Call this after setOutFormat() but before prepare().
It seems like you have not yet called setVideoSource() before you try to setVideoFrameRate(). Try setting the video source and see if that solves your problem.
I'm currently trying to create a very simple video recorder on Android without using intent, just a custom app. My code snippet is following
import java.io.IOException;
import android.app.Activity;
import android.media.MediaRecorder;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class CameraActivity extends Activity implements SurfaceHolder.Callback {
public enum State {
UNKNOWN, CONNECTED, NOT_CONNECTED
}
SurfaceView cameraView;
SurfaceHolder holder;
public boolean mListening;
public Object mState;
public NetworkInfo mNetworkInfo;
public boolean mSending;
boolean recording = false;
public static final String TAG = "VIDEOCAPTURE";
private MediaRecorder recorder;
protected void captureVideo() {
if (recording) {
recorder.stop();
// recorder.release();
recording = false;
Log.v(TAG, "Recording Stopped");
// Let's initRecorder so we can record again
initRecorder();
prepareRecorder();
} else {
recording = true;
recorder.start();
Log.v(TAG, "Recording Started");
}
}
private void initRecorder() {
recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
recorder.setOutputFile("/sdcard/videocapture_example.mp4");
recorder.setMaxDuration(50000); // 50 seconds
recorder.setMaxFileSize(5000000);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
recorder = new MediaRecorder();
initRecorder();
setContentView(R.layout.main);
cameraView = (SurfaceView) this.findViewById(R.id.CameraView);
holder = cameraView.getHolder();
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
holder.addCallback(this);
}
private void prepareRecorder() {
recorder.setPreviewDisplay(holder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
finish();
} catch (IOException e) {
e.printStackTrace();
finish();
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
Log.v(TAG, "surfaceCreated");
prepareRecorder();
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// camera.stopPreview();
// camera.release();
Log.v(TAG, "surfaceDestroyed");
if (recording) {
recorder.stop();
recording = false;
}
recorder.release();
finish();
}
}
But when i deployed this code within emulator, in the LogCat i got some errors like this.
java.lang.RuntimeException: Unable to start activity ComponentInfo...
java.lang.RuntimeException: setMaxDuration failed.
at android.media.MediaRecorder.setMaxDuration(Native Method)
What wrong with my code?
Quote from http://developer.android.com/reference/android/media/MediaRecorder.html:
"Note: Currently, MediaRecorder does not work on the emulator."