Re: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
Use any one of the numerous methods to send the files to your server (HTTP, FTP etc). You can use something on the server to combine them into a video. What you do on the server is not part of the Android SDK, and hence doesn't belong on the list. Thansk On Sun, Nov 27, 2011 at 6:29 PM, muhammad.ume...@hotmail.com muhammad.ume...@hotmail.com wrote: Hi, i am able to create images on sd card with onPreviewFrame by converting the raw byte array to Yuvimage and then compressing it to jpeg format and then write in a file. this work perfectly. but i want to send these preview frames to server and recored in a video file. please help me, I m stuck here thanks and Regards umer -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Raghav Sood http://www.androidactivist.org/ - Author http://www.appaholics.in/ - Founder -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
RE: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
Hi Raghav,
Thanks for your reply, I am using the TCP socket to send data to
my server.i am writing image files continuously to sd card is perfet. but send
this to server is not working.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2 ||
format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h, null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg, System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos = new BufferedOutputStream(dos);
dos.writeInt(len);
if (len 0) {
/// this will write to socket
imagebos.write(myByteArray, start, len);
}
}
//here is server side code /
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len = dataInputStream.readInt();
byte[] data = new byte[280];
how to specify the length in run time
if (len 0)
{
dataInputStream.readFully(data);
//dataInputStream.read(data);
System.out.println(message: + data);
}
write this data array on a file
FileOutputStream fos = new FileOutputStream(image.jpg, true);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.write(data);
out.flush();
out.close();
fos.close();
}
the server side code is correct or not but the file is not in correct formate,
please tell me if i am doing wrong. Also tell me is it correct method to
combine the images file to create a video?
Please correct me if i m doing wrong
Thanks
umer
Date: Sun, 27 Nov 2011 18:36:34 +0530
Subject: Re: [android-developers] Please help me!!! how to create video file on
server side by send onPreviewFrames byte array
From: raghavs...@androidactivist.org
To: android-developers@googlegroups.com
Use any one of the numerous methods to send the files to your server (HTTP, FTP
etc). You can use something on the server to combine them into a video. What
Re: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
What do you mean by not working? Are you getting a specific error? What
does the LogCat say? Try adding breakpoints to your code.
Also, in my personal opinion, it would be easier to send the images via
HTTP or FTP.
See this for FTP upload:
http://stackoverflow.com/questions/6464456/how-do-you-upload-images-to-an-ftp-server-within-an-android-app
.
On Sun, Nov 27, 2011 at 10:23 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
Hi Raghav,
Thanks for your reply, I am using the TCP socket to send
data to my server.i am writing image files continuously to sd card is
perfet. but send this to server is not working.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2
|| format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h,
null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg,
System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not
allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new
DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos = new BufferedOutputStream(dos);
dos.writeInt(len);
if (len 0) {
/// this will write to socket
imagebos.write(myByteArray, start, len);
}
}
//here is server side code /
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len = dataInputStream.readInt();
byte[] data = new byte[280];
how to specify the length in run time
if (len 0)
{
dataInputStream.readFully(data);
//dataInputStream.read(data);
System.out.println(message: +
data);
}
write this data array on a file
FileOutputStream fos = new FileOutputStream(image.jpg,
true);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.write(data);
out.flush();
out.close();
fos.close();
}
the server side code is correct or not but the file is not in correct
formate, please tell me if i am doing wrong. Also tell me is it correct
method to combine the images file to create a video?
Please correct me if i m doing wrong
Thanks
umer
--
Date: Sun, 27 Nov 2011 18:36:34 +0530
Subject: Re: [android-developers] Please help me!!! how to create video
file on server side by
RE: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
working means, server create an image file but when i open it, it will not show
me an image as I write on sd card and FTP is to send file I don't want to send
a file, I am sending an onpreviewfram byte array that is in jpeg format to
server and then save it to image file.
basically my project is to capture video from the android camera and send it to
TCP socket and server will receive this video in a a file.
thanks
Date: Sun, 27 Nov 2011 22:30:13 +0530
Subject: Re: [android-developers] Please help me!!! how to create video file on
server side by send onPreviewFrames byte array
From: raghavs...@androidactivist.org
To: android-developers@googlegroups.com
What do you mean by not working? Are you getting a specific error? What does
the LogCat say? Try adding breakpoints to your code.
Also, in my personal opinion, it would be easier to send the images via HTTP or
FTP.
See this for FTP upload:
http://stackoverflow.com/questions/6464456/how-do-you-upload-images-to-an-ftp-server-within-an-android-app.
On Sun, Nov 27, 2011 at 10:23 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
Hi Raghav,
Thanks for your reply, I am using the TCP socket to send data to
my server.i am writing image files continuously to sd card is perfet. but send
this to server is not working.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2 ||
format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h, null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg, System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos = new BufferedOutputStream(dos);
dos.writeInt(len);
if (len 0) {
/// this will write to socket
imagebos.write(myByteArray, start, len);
}
}
//here is server side code /
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len = dataInputStream.readInt();
byte[] data = new byte[280];
how to specify the length in run time
if (len 0)
{
dataInputStream.readFully(data);
//dataInputStream.read(data);
System.out.println(message: + data);
Re: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
I didn't quite understand your explanation. From what I get, you are saving
images to the SD Card, and then send those images in a byte array to your
server and want to save it as a video file? From what I have learnt so far
in this world, image files don't arbitrarily convert themselves to video
files. It would be easier for you to record the entire video and then send
it after the recording has finished to the server.
Thanks
On Sun, Nov 27, 2011 at 11:11 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
working means, server create an image file but when i open it, it will
not show me an image as I write on sd card and FTP is to send file I don't
want to send a file, I am sending an onpreviewfram byte array that is in
jpeg format to server and then save it to image file.
basically my project is to capture video from the android camera and send
it to TCP socket and server will receive this video in a a file.
thanks
--
Date: Sun, 27 Nov 2011 22:30:13 +0530
Subject: Re: [android-developers] Please help me!!! how to create video
file on server side by send onPreviewFrames byte array
From: raghavs...@androidactivist.org
To: android-developers@googlegroups.com
What do you mean by not working? Are you getting a specific error? What
does the LogCat say? Try adding breakpoints to your code.
Also, in my personal opinion, it would be easier to send the images via
HTTP or FTP.
See this for FTP upload:
http://stackoverflow.com/questions/6464456/how-do-you-upload-images-to-an-ftp-server-within-an-android-app
.
On Sun, Nov 27, 2011 at 10:23 PM, Muhammad UMER
muhammad.ume...@hotmail.com wrote:
Hi Raghav,
Thanks for your reply, I am using the TCP socket to send
data to my server.i am writing image files continuously to sd card is
perfet. but send this to server is not working.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2
|| format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h,
null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg,
System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not
allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new
DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos = new BufferedOutputStream(dos);
dos.writeInt(len);
if (len 0) {
/// this will write to socket
imagebos.write(myByteArray, start, len);
}
}
//here is server side code /
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len =
RE: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
No, my purpose is not to save to SD Card, My purpose is to capture video from
android camera and as i captured the video(not complete video, like frames)
send live to server and server will save it to file.
Is Mediarecorder will help me to do this?
thanks
Date: Sun, 27 Nov 2011 23:18:10 +0530
Subject: Re: [android-developers] Please help me!!! how to create video file on
server side by send onPreviewFrames byte array
From: raghavs...@androidactivist.org
To: android-developers@googlegroups.com
I didn't quite understand your explanation. From what I get, you are saving
images to the SD Card, and then send those images in a byte array to your
server and want to save it as a video file? From what I have learnt so far in
this world, image files don't arbitrarily convert themselves to video files. It
would be easier for you to record the entire video and then send it after the
recording has finished to the server.
Thanks
On Sun, Nov 27, 2011 at 11:11 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
working means, server create an image file but when i open it, it will not show
me an image as I write on sd card and FTP is to send file I don't want to send
a file, I am sending an onpreviewfram byte array that is in jpeg format to
server and then save it to image file.
basically my project is to capture video from the android camera and send it to
TCP socket and server will receive this video in a a file.
thanks
Date: Sun, 27 Nov 2011 22:30:13 +0530
Subject: Re: [android-developers] Please help me!!! how to create video file on
server side by send onPreviewFrames byte array
From: raghavs...@androidactivist.org
To: android-developers@googlegroups.com
What do you mean by not working? Are you getting a specific error? What does
the LogCat say? Try adding breakpoints to your code.
Also, in my personal opinion, it would be easier to send the images via HTTP or
FTP.
See this for FTP upload:
http://stackoverflow.com/questions/6464456/how-do-you-upload-images-to-an-ftp-server-within-an-android-app.
On Sun, Nov 27, 2011 at 10:23 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
Hi Raghav,
Thanks for your reply, I am using the TCP socket to send data to
my server.i am writing image files continuously to sd card is perfet. but send
this to server is not working.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2 ||
format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h, null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg, System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos
RE: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
It might be overly ambitious to send uncompressed frames to the server. You can compress them to Jpeg in memory and send these to the server via whatever method. On the server concatenate the files to a MJpeg stream. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
RE: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
Thanks for your reply.First,is it good way to create a video(Mjpeg) from jpeg
images? Secondly, In my code i compress camera onpreviewframe byte array to
jpeg format and its perfect but when i send this compressed byte array to
server through TCP socket and server save it in a file, but not in correct
format.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2 ||
format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h, null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg, System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos = new BufferedOutputStream(dos);
dos.writeInt(len);
if (len 0) {
/// this will write to socket
imagebos.write(myByteArray, start, len);
}
}
//here is server side code /
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len = dataInputStream.readInt();
byte[] data = new byte[280];
how to specify the length in run time
if (len 0)
{
dataInputStream.readFully(data);
//dataInputStream.read(data);
System.out.println(message: + data);
}
write this data array on a file
FileOutputStream fos = new FileOutputStream(image.jpg, true);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.write(data);
out.flush();
out.close();
fos.close();
}
the server side code is correct or not but the file is not in correct formate,
please tell me if i am doing wrong. Also tell me is it correct method to
combine the images file to create a video?
Please correct me if i m doing wrong
Thanks
umer
Date: Sun, 27 Nov 2011 18:46:03 -0800
From: l...@bendlin.us
To: android-developers@googlegroups.com
Subject: RE: [android-developers] Please help me!!! how to create video file
on server side by send onPreviewFrames byte array
It might be overly ambitious to send
Re: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
If you are sure that what you are sending from the device is fine, then I'd
imagine that whatever server side system you are using to save the files
isn't doing it the correct way. What do you mean by correct format? Does it
get saved only partially? Or is it just a mixed up bunch of data?
Thanks
On Mon, Nov 28, 2011 at 12:44 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
Thanks for your reply.First,is it good way to create a video(Mjpeg) from
jpeg images? Secondly, In my code i compress camera onpreviewframe byte
array to jpeg format and its perfect but when i send this compressed byte
array to server through TCP socket and server save it in a file, but not in
correct format.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2
|| format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h,
null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg,
System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not
allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new
DataOutputStream(socket.getOutputStream());
//BufferedOutputStream imagebos = new BufferedOutputStream(dos);
dos.writeInt(len);
if (len 0) {
/// this will write to socket
imagebos.write(myByteArray, start, len);
}
}
//here is server side code /
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len = dataInputStream.readInt();
byte[] data = new byte[280];
how to specify the length in run time
if (len 0)
{
dataInputStream.readFully(data);
//dataInputStream.read(data);
System.out.println(message: +
data);
}
write this data array on a file
FileOutputStream fos = new FileOutputStream(image.jpg,
true);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.write(data);
out.flush();
out.close();
fos.close();
}
the server side code is correct or not but the file is not in correct
formate, please tell me if i am doing wrong. Also tell me is it correct
method to combine the images file to create a video?
Please correct me if i m doing wrong
Thanks
umer
Date: Sun, 27 Nov 2011 18:46:03 -0800
From: l...@bendlin.us
To:
RE: [android-developers] Please help me!!! how to create video file on server side by send onPreviewFrames byte array
correct format means, a jpeg file is created but it will not show the image
what's the reason? i think the problem is in the creation of byte array?
///here is my server side code
while(dataInputStream.readInt() 0 )
{
reading from client
read from client in byte array
int len = dataInputStream.readInt();
byte[] data = new byte[28]; //
how to specify the length in run time
if (len 0)
{
dataInputStream.readFully(data);
//dataInputStream.read(data);
System.out.println(message: + data);
}
write this data array on a file
FileOutputStream fos = new FileOutputStream(image.jpg, true);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.write(data);
out.flush();
out.close();
fos.close();
}
thanks
Date: Mon, 28 Nov 2011 12:49:36 +0530
Subject: Re: [android-developers] Please help me!!! how to create video file on
server side by send onPreviewFrames byte array
From: raghavs...@androidactivist.org
To: android-developers@googlegroups.com
If you are sure that what you are sending from the device is fine, then I'd
imagine that whatever server side system you are using to save the files isn't
doing it the correct way. What do you mean by correct format? Does it get saved
only partially? Or is it just a mixed up bunch of data?
Thanks
On Mon, Nov 28, 2011 at 12:44 PM, Muhammad UMER muhammad.ume...@hotmail.com
wrote:
Thanks for your reply.First,is it good way to create a video(Mjpeg) from jpeg
images? Secondly, In my code i compress camera onpreviewframe byte array to
jpeg format and its perfect but when i send this compressed byte array to
server through TCP socket and server save it in a file, but not in correct
format.
/// Here is my client side code
public void onPreviewFrame(byte[] data, Camera camera) { // 11
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 /*|| format == ImageFormat.YUY2 ||
format == ImageFormat.NV16*/)
{
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h, null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new
ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt=output_stream.toByteArray();
FileOutputStream outStream = null;
try {
/// this work perfect for sd card
//outStream = new FileOutputStream(String.format(
///sdcard/%d.jpg, System.currentTimeMillis()));
//outStream.write(byt);
//outStream.close();
// this method write byte array to socket
sendBytes(byt, 0, byt.length);
Log.d(TAG, onPreviewFrame - wrote bytes:
+ data.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
Preview.this.invalidate();
// Convert from Jpeg to Bitmap
//bmap =
BitmapFactory.decodeByteArray(output_stream.toByteArray(), 0,
output_stream.size());
}
//sending byte array to server
public void sendBytes(byte[] myByteArray, int start, int len) throws
IOException {
if (len 0)
throw new IllegalArgumentException(Negative length not allowed);
if (start 0 || start = myByteArray.length)
throw new IndexOutOfBoundsException(Out of bounds: + start);
// Other checks if needed.
// May be better to save the streams in the support class;
// just like the socket variable.
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
