public void prepare() throws IllegalStateException, IOException {
if (mode == MODE_STREAMING) {
createSockets();
// We write the ouput of the camera in a local socket instead of a file !
// This one little trick makes streaming feasible quiet simply: data from the camera
// can then be manipulated at the other end of the socket
setOutputFile(sender.getFileDescriptor());
}
super.prepare();
}
/**
* Constructs instance from connected socket.
*
* @param socket non-null; connected socket
* @throws IOException
*/
ZygoteConnection(LocalSocket socket) throws IOException {
mSocket = socket;
mSocketOutStream = new DataOutputStream(socket.getOutputStream());
mSocketReader = new BufferedReader(new InputStreamReader(socket.getInputStream()), 256);
mSocket.setSoTimeout(CONNECTION_TIMEOUT_MILLIS);
try {
peer = mSocket.getPeerCredentials();
} catch (IOException ex) {
Log.e(TAG, "Cannot read peer credentials", ex);
throw ex;
}
peerSecurityContext = SELinux.getPeerContext(mSocket.getFileDescriptor());
}
private boolean prepareVideoRecorder() {
mMediaRecorder = new MediaRecorder();
// Step 1: Unlock and set camera to MediaRecorder
camera.unlock();
mMediaRecorder.setCamera(camera);
// Step 2: Set sources
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
// Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
// mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
// Step 3: Set output format and encoding (for versions prior to API Level 8)
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
// Step 4: Set output file
mMediaRecorder.setOutputFile(ls.getFileDescriptor());
// Step 5: Set the preview output
// mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());
mMediaRecorder.setPreviewDisplay(holder.getSurface());
Log.i(TAG, "Surface valid: " + holder.getSurface().isValid());
/*mMediaRecorder.setVideoSize(176, 144);
mMediaRecorder.setVideoFrameRate(20);
mMediaRecorder.setAudioChannels(1);
*/
// Step 6: Prepare configured MediaRecorder
try {
mMediaRecorder.prepare();
} catch (Exception e) {
Log.d(TAG, "Exception preparing MediaRecorder: " + e.getMessage());
releaseMediaRecorder();
return false;
}
return true;
}
/**
* Handles post-fork setup of child proc, closing sockets as appropriate, reopen stdio as
* appropriate, and ultimately throwing MethodAndArgsCaller if successful or returning if failed.
*
* @param parsedArgs non-null; zygote args
* @param descriptors null-ok; new file descriptors for stdio if available.
* @param pipeFd null-ok; pipe for communication back to Zygote.
* @param newStderr null-ok; stream to use for stderr until stdio is reopened.
* @throws ZygoteInit.MethodAndArgsCaller on success to trampoline to code that invokes static
* main.
*/
private void handleChildProc(
Arguments parsedArgs,
FileDescriptor[] descriptors,
FileDescriptor pipeFd,
PrintStream newStderr)
throws ZygoteInit.MethodAndArgsCaller {
/*
* Close the socket, unless we're in "peer wait" mode, in which
* case it's used to track the liveness of this process.
*/
if (parsedArgs.peerWait) {
try {
ZygoteInit.setCloseOnExec(mSocket.getFileDescriptor(), true);
sPeerWaitSocket = mSocket;
} catch (IOException ex) {
Log.e(TAG, "Zygote Child: error setting peer wait " + "socket to be close-on-exec", ex);
}
} else {
closeSocket();
ZygoteInit.closeServerSocket();
}
if (descriptors != null) {
try {
ZygoteInit.reopenStdio(descriptors[0], descriptors[1], descriptors[2]);
for (FileDescriptor fd : descriptors) {
IoUtils.closeQuietly(fd);
}
newStderr = System.err;
} catch (IOException ex) {
Log.e(TAG, "Error reopening stdio", ex);
}
}
if (parsedArgs.niceName != null) {
Process.setArgV0(parsedArgs.niceName);
}
if (parsedArgs.runtimeInit) {
if (parsedArgs.invokeWith != null) {
WrapperInit.execApplication(
parsedArgs.invokeWith,
parsedArgs.niceName,
parsedArgs.targetSdkVersion,
pipeFd,
parsedArgs.remainingArgs);
} else {
RuntimeInit.zygoteInit(parsedArgs.targetSdkVersion, parsedArgs.remainingArgs);
}
} else {
String className;
try {
className = parsedArgs.remainingArgs[0];
} catch (ArrayIndexOutOfBoundsException ex) {
logAndPrintError(newStderr, "Missing required class name argument", null);
return;
}
String[] mainArgs = new String[parsedArgs.remainingArgs.length - 1];
System.arraycopy(parsedArgs.remainingArgs, 1, mainArgs, 0, mainArgs.length);
if (parsedArgs.invokeWith != null) {
WrapperInit.execStandalone(
parsedArgs.invokeWith, parsedArgs.classpath, className, mainArgs);
} else {
ClassLoader cloader;
if (parsedArgs.classpath != null) {
cloader = new PathClassLoader(parsedArgs.classpath, ClassLoader.getSystemClassLoader());
} else {
cloader = ClassLoader.getSystemClassLoader();
}
try {
ZygoteInit.invokeStaticMain(cloader, className, mainArgs);
} catch (RuntimeException ex) {
logAndPrintError(newStderr, "Error starting.", ex);
}
}
}
}
/**
* Returns the file descriptor of the associated socket.
*
* @return null-ok; file descriptor
*/
FileDescriptor getFileDesciptor() {
return mSocket.getFileDescriptor();
}
public FileDescriptor getInputFileDescriptor() {
return localSender.getFileDescriptor();
}
public FileDescriptor getOutputFileDescriptor() {
return localReceiver.getFileDescriptor();
}
public void testLocalConnections() throws IOException {
// create client and server socket
LocalServerSocket localServerSocket = new LocalServerSocket(mSockAddr);
LocalSocket clientSocket = new LocalSocket();
// establish connection between client and server
LocalSocketAddress locSockAddr = new LocalSocketAddress(mSockAddr);
assertFalse(clientSocket.isConnected());
clientSocket.connect(locSockAddr);
assertTrue(clientSocket.isConnected());
LocalSocket serverSocket = localServerSocket.accept();
Credentials credent = clientSocket.getPeerCredentials();
assertTrue(0 != credent.getPid());
// send data from client to server
OutputStream clientOutStream = clientSocket.getOutputStream();
clientOutStream.write(12);
InputStream serverInStream = serverSocket.getInputStream();
assertEquals(12, serverInStream.read());
// send data from server to client
OutputStream serverOutStream = serverSocket.getOutputStream();
serverOutStream.write(3);
InputStream clientInStream = clientSocket.getInputStream();
assertEquals(3, clientInStream.read());
// Test sending and receiving file descriptors
clientSocket.setFileDescriptorsForSend(new FileDescriptor[] {FileDescriptor.in});
clientOutStream.write(32);
assertEquals(32, serverInStream.read());
FileDescriptor[] out = serverSocket.getAncillaryFileDescriptors();
assertEquals(1, out.length);
FileDescriptor fd = clientSocket.getFileDescriptor();
assertTrue(fd.valid());
// shutdown input stream of client
clientSocket.shutdownInput();
assertEquals(-1, clientInStream.read());
// shutdown output stream of client
clientSocket.shutdownOutput();
try {
clientOutStream.write(10);
fail("testLocalSocket shouldn't come to here");
} catch (IOException e) {
// expected
}
// shutdown input stream of server
serverSocket.shutdownInput();
assertEquals(-1, serverInStream.read());
// shutdown output stream of server
serverSocket.shutdownOutput();
try {
serverOutStream.write(10);
fail("testLocalSocket shouldn't come to here");
} catch (IOException e) {
// expected
}
// close client socket
clientSocket.close();
try {
clientInStream.read();
fail("testLocalSocket shouldn't come to here");
} catch (IOException e) {
// expected
}
// close server socket
serverSocket.close();
try {
serverInStream.read();
fail("testLocalSocket shouldn't come to here");
} catch (IOException e) {
// expected
}
}