Example usage for android.os ParcelFileDescriptor createPipe

Introduction

In this page you can find the example usage for android.os ParcelFileDescriptor createPipe.

Prototype

public static ParcelFileDescriptor[] createPipe() throws IOException 

Source Link

Document

Create two ParcelFileDescriptors structured as a data pipe.

Usage

From source file:com.github.mjdev.libaums.storageprovider.util.ParcelFileDescriptorUtil.java

public static ParcelFileDescriptor pipeFrom(InputStream inputStream) throws IOException {
    final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
    final OutputStream output = new ParcelFileDescriptor.AutoCloseOutputStream(pipe[1]);

    new TransferThread(inputStream, output).start();

    return pipe[0];
}

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From source file:com.github.mjdev.libaums.storageprovider.util.ParcelFileDescriptorUtil.java

@SuppressWarnings("unused")
public static ParcelFileDescriptor pipeTo(OutputStream outputStream) throws IOException {
    final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
    final InputStream input = new ParcelFileDescriptor.AutoCloseInputStream(pipe[0]);

    new TransferThread(input, outputStream).start();

    return pipe[1];
}

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From source file:org.opensilk.music.artwork.provider.ArtworkProvider.java

private ParcelFileDescriptor pullSnapshot(String cacheKey) {
    Timber.v("Checking DiskCache for " + cacheKey);
    try {//  w w  w  .j  av  a  2  s  . com
        if (mL2Cache == null) {
            throw new IOException("Unable to obtain cache instance");
        }
        final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
        final OutputStream out = new ParcelFileDescriptor.AutoCloseOutputStream(pipe[1]);
        final DiskLruCache.Snapshot snapshot = mL2Cache.getSnapshot(cacheKey);
        if (snapshot != null && snapshot.getInputStream(0) != null) {
            final Scheduler.Worker worker = mScheduler.createWorker();
            worker.schedule(new Action0() {
                @Override
                public void call() {
                    try {
                        IOUtils.copy(snapshot.getInputStream(0), out);
                    } catch (IOException e) {
                        Timber.e(e, "ParcelFileDescriptorPipe");
                    } finally {
                        snapshot.close();
                        IOUtils.closeQuietly(out);
                        worker.unsubscribe();
                    }
                }
            });
            return pipe[0];
        } else {
            pipe[0].close();
            out.close();
        }
    } catch (IOException e) {
        Timber.w("pullSnapshot failed: %s", e.getMessage());
    }
    return null;
}

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From source file:com.github.michalbednarski.intentslab.Utils.java

@TargetApi(13) // Function handles all supported api levels
public static InputStream dumpSystemService(Context context, String serviceName, final String[] arguments)
        throws Exception {
    // Check if we have permission to invoke dump from our process
    final boolean canDumpLocally = context.getPackageManager().checkPermission(android.Manifest.permission.DUMP,
            context.getPackageName()) == PackageManager.PERMISSION_GRANTED;

    // On versions without createPipe() just execute dumpsys
    if (android.os.Build.VERSION.SDK_INT < 9) {
        if (!canDumpLocally) {
            throw new Exception("Dumping is not supported on this system version");
        }// ww  w. j ava 2 s. c o m
        String[] progArray = new String[arguments != null ? 2 + arguments.length : 2];
        progArray[0] = "dumpsys";
        progArray[1] = serviceName;
        if (arguments != null) {
            System.arraycopy(arguments, 0, progArray, 2, arguments.length);
        }
        return Runtime.getRuntime().exec(progArray).getInputStream();
    }

    // Get service
    final Class<?> serviceManager = Class.forName("android.os.ServiceManager");
    final IBinder service = (IBinder) serviceManager.getMethod("getService", String.class).invoke(null,
            serviceName);

    // Check permissions and get remote interface if needed
    IRemoteInterface remoteInterface = null;
    if (!canDumpLocally) {
        remoteInterface = RunAsManager.getRemoteInterfaceForSystemDebuggingCommands();
        if (remoteInterface == null) {
            throw new SecurityException("Process has no permission to dump services");
        }
    }

    // Create pipe, write(pipe[0]) -> read(pipe[1])
    final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
    final ParcelFileDescriptor readablePipe = pipe[0];
    final ParcelFileDescriptor writablePipe = pipe[1];

    try {
        // Execute dump
        if (canDumpLocally) {
            if (android.os.Build.VERSION.SDK_INT >= 13) {
                service.dumpAsync(writablePipe.getFileDescriptor(), arguments);
                writablePipe.close();
            } else {
                (new Thread() {
                    @Override
                    public void run() {
                        try {
                            service.dump(writablePipe.getFileDescriptor(), arguments);
                            writablePipe.close();
                        } catch (Exception e) {
                            // TODO: can we handle this?
                            e.printStackTrace();
                        }
                    }
                }).start();
            }
        } else {
            remoteInterface.dumpServiceAsync(service, writablePipe, arguments);
            writablePipe.close();
        }
        // If anything went wrong, close pipe and rethrow
    } catch (Throwable e) {
        readablePipe.close();
        writablePipe.close();
        throwUnchecked(e);
        throw new Error(); // Unreachable
    }

    // Return stream that will ensure closing fd
    return new FileInputStream(readablePipe.getFileDescriptor()) {
        @Override
        public void close() throws IOException {
            super.close();
            readablePipe.close();
        }
    };
}

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From source file:org.opensilk.music.artwork.ArtworkRequestManagerImpl.java

private ParcelFileDescriptor pullSnapshot(String cacheKey) {
    Timber.d("Checking DiskCache for " + cacheKey);
    try {/*from   w  ww  . j a  va  2 s  .  c  o m*/
        if (mL2Cache == null) {
            throw new IOException("Unable to obtain cache instance");
        }
        final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
        final OutputStream out = new ParcelFileDescriptor.AutoCloseOutputStream(pipe[1]);
        final DiskLruCache.Snapshot snapshot = mL2Cache.getSnapshot(cacheKey);
        if (snapshot != null && snapshot.getInputStream(0) != null) {
            final Scheduler.Worker worker = Schedulers.io().createWorker();
            worker.schedule(new Action0() {
                @Override
                public void call() {
                    try {
                        IOUtils.copy(snapshot.getInputStream(0), out);
                    } catch (IOException e) {
                        //                            e.printStackTrace();
                    } finally {
                        snapshot.close();
                        IOUtils.closeQuietly(out);
                        worker.unsubscribe();
                    }
                }
            });
            return pipe[0];
        } else {
            pipe[0].close();
            out.close();
        }
    } catch (IOException e) {
        Timber.w(e, "pullSnapshot");
    }
    return null;
}

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