Examples with AssetFileDescriptor android.content.res.AssetFileDescriptor used on opensource projects

Example 56 with AssetFileDescriptor

use of android.content.res.AssetFileDescriptor in project android_frameworks_base by AOSPA.

the class SoundPool method load.

/**
     * Load the sound from the specified APK resource.
     *
     * Note that the extension is dropped. For example, if you want to load
     * a sound from the raw resource file "explosion.mp3", you would specify
     * "R.raw.explosion" as the resource ID. Note that this means you cannot
     * have both an "explosion.wav" and an "explosion.mp3" in the res/raw
     * directory.
     * 
     * @param context the application context
     * @param resId the resource ID
     * @param priority the priority of the sound. Currently has no effect. Use
     *                 a value of 1 for future compatibility.
     * @return a sound ID. This value can be used to play or unload the sound.
     */
public int load(Context context, int resId, int priority) {
    AssetFileDescriptor afd = context.getResources().openRawResourceFd(resId);
    int id = 0;
    if (afd != null) {
        id = _load(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength(), priority);
        try {
            afd.close();
        } catch (java.io.IOException ex) {
        //Log.d(TAG, "close failed:", ex);
        }
    }
    return id;
}

Example 57 with AssetFileDescriptor

use of android.content.res.AssetFileDescriptor in project android_frameworks_base by AOSPA.

the class ContentResolver method openTypedAssetFileDescriptor.

/**
     * Open a raw file descriptor to access (potentially type transformed)
     * data from a "content:" URI.  This interacts with the underlying
     * {@link ContentProvider#openTypedAssetFile} method of the provider
     * associated with the given URI, to retrieve retrieve any appropriate
     * data stream for the data stored there.
     *
     * <p>Unlike {@link #openAssetFileDescriptor}, this function only works
     * with "content:" URIs, because content providers are the only facility
     * with an associated MIME type to ensure that the returned data stream
     * is of the desired type.
     *
     * <p>All text/* streams are encoded in UTF-8.
     *
     * @param uri The desired URI to open.
     * @param mimeType The desired MIME type of the returned data.  This can
     * be a pattern such as *&#47;*, which will allow the content provider to
     * select a type, though there is no way for you to determine what type
     * it is returning.
     * @param opts Additional provider-dependent options.
     * @param cancellationSignal A signal to cancel the operation in progress,
     *         or null if none. If the operation is canceled, then
     *         {@link OperationCanceledException} will be thrown.
     * @return Returns a new ParcelFileDescriptor from which you can read the
     * data stream from the provider.  Note that this may be a pipe, meaning
     * you can't seek in it.  The only seek you should do is if the
     * AssetFileDescriptor contains an offset, to move to that offset before
     * reading.  You own this descriptor and are responsible for closing it when done.
     * @throws FileNotFoundException Throws FileNotFoundException of no
     * data of the desired type exists under the URI.
     */
@Nullable
public final AssetFileDescriptor openTypedAssetFileDescriptor(@NonNull Uri uri, @NonNull String mimeType, @Nullable Bundle opts, @Nullable CancellationSignal cancellationSignal) throws FileNotFoundException {
    Preconditions.checkNotNull(uri, "uri");
    Preconditions.checkNotNull(mimeType, "mimeType");
    IContentProvider unstableProvider = acquireUnstableProvider(uri);
    if (unstableProvider == null) {
        throw new FileNotFoundException("No content provider: " + uri);
    }
    IContentProvider stableProvider = null;
    AssetFileDescriptor fd = null;
    try {
        ICancellationSignal remoteCancellationSignal = null;
        if (cancellationSignal != null) {
            cancellationSignal.throwIfCanceled();
            remoteCancellationSignal = unstableProvider.createCancellationSignal();
            cancellationSignal.setRemote(remoteCancellationSignal);
        }
        try {
            fd = unstableProvider.openTypedAssetFile(mPackageName, uri, mimeType, opts, remoteCancellationSignal);
            if (fd == null) {
                // The provider will be released by the finally{} clause
                return null;
            }
        } catch (DeadObjectException e) {
            // The remote process has died...  but we only hold an unstable
            // reference though, so we might recover!!!  Let's try!!!!
            // This is exciting!!1!!1!!!!1
            unstableProviderDied(unstableProvider);
            stableProvider = acquireProvider(uri);
            if (stableProvider == null) {
                throw new FileNotFoundException("No content provider: " + uri);
            }
            fd = stableProvider.openTypedAssetFile(mPackageName, uri, mimeType, opts, remoteCancellationSignal);
            if (fd == null) {
                // The provider will be released by the finally{} clause
                return null;
            }
        }
        if (stableProvider == null) {
            stableProvider = acquireProvider(uri);
        }
        releaseUnstableProvider(unstableProvider);
        unstableProvider = null;
        ParcelFileDescriptor pfd = new ParcelFileDescriptorInner(fd.getParcelFileDescriptor(), stableProvider);
        // Success!  Don't release the provider when exiting, let
        // ParcelFileDescriptorInner do that when it is closed.
        stableProvider = null;
        return new AssetFileDescriptor(pfd, fd.getStartOffset(), fd.getDeclaredLength());
    } catch (RemoteException e) {
        // Whatever, whatever, we'll go away.
        throw new FileNotFoundException("Failed opening content provider: " + uri);
    } catch (FileNotFoundException e) {
        throw e;
    } finally {
        if (cancellationSignal != null) {
            cancellationSignal.setRemote(null);
        }
        if (stableProvider != null) {
            releaseProvider(stableProvider);
        }
        if (unstableProvider != null) {
            releaseUnstableProvider(unstableProvider);
        }
    }
}

Example 58 with AssetFileDescriptor

use of android.content.res.AssetFileDescriptor in project android_frameworks_base by AOSPA.

the class ContentProviderProxy method openAssetFile.

@Override
public AssetFileDescriptor openAssetFile(String callingPkg, Uri url, String mode, ICancellationSignal signal) throws RemoteException, FileNotFoundException {
    Parcel data = Parcel.obtain();
    Parcel reply = Parcel.obtain();
    try {
        data.writeInterfaceToken(IContentProvider.descriptor);
        data.writeString(callingPkg);
        url.writeToParcel(data, 0);
        data.writeString(mode);
        data.writeStrongBinder(signal != null ? signal.asBinder() : null);
        mRemote.transact(IContentProvider.OPEN_ASSET_FILE_TRANSACTION, data, reply, 0);
        DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(reply);
        int has = reply.readInt();
        AssetFileDescriptor fd = has != 0 ? AssetFileDescriptor.CREATOR.createFromParcel(reply) : null;
        return fd;
    } finally {
        data.recycle();
        reply.recycle();
    }
}

Example 59 with AssetFileDescriptor

use of android.content.res.AssetFileDescriptor in project android_frameworks_base by AOSPA.

the class MediaPlayer method addTimedTextSource.

/**
     * Adds an external timed text source file (Uri).
     *
     * Currently supported format is SubRip with the file extension .srt, case insensitive.
     * Note that a single external timed text source may contain multiple tracks in it.
     * One can find the total number of available tracks using {@link #getTrackInfo()} to see what
     * additional tracks become available after this method call.
     *
     * @param context the Context to use when resolving the Uri
     * @param uri the Content URI of the data you want to play
     * @param mimeType The mime type of the file. Must be one of the mime types listed above.
     * @throws IOException if the file cannot be accessed or is corrupted.
     * @throws IllegalArgumentException if the mimeType is not supported.
     * @throws IllegalStateException if called in an invalid state.
     */
public void addTimedTextSource(Context context, Uri uri, String mimeType) throws IOException, IllegalArgumentException, IllegalStateException {
    String scheme = uri.getScheme();
    if (scheme == null || scheme.equals("file")) {
        addTimedTextSource(uri.getPath(), mimeType);
        return;
    }
    AssetFileDescriptor fd = null;
    try {
        ContentResolver resolver = context.getContentResolver();
        fd = resolver.openAssetFileDescriptor(uri, "r");
        if (fd == null) {
            return;
        }
        addTimedTextSource(fd.getFileDescriptor(), mimeType);
        return;
    } catch (SecurityException ex) {
    } catch (IOException ex) {
    } finally {
        if (fd != null) {
            fd.close();
        }
    }
}

Example 60 with AssetFileDescriptor

use of android.content.res.AssetFileDescriptor in project android_frameworks_base by DirtyUnicorns.

the class DocumentsContract method openImageThumbnail.

/**
     * Open the given image for thumbnail purposes, using any embedded EXIF
     * thumbnail if available, and providing orientation hints from the parent
     * image.
     *
     * @hide
     */
public static AssetFileDescriptor openImageThumbnail(File file) throws FileNotFoundException {
    final ParcelFileDescriptor pfd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
    Bundle extras = null;
    try {
        final ExifInterface exif = new ExifInterface(file.getAbsolutePath());
        switch(exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1)) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 90);
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 180);
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 270);
                break;
        }
        final long[] thumb = exif.getThumbnailRange();
        if (thumb != null) {
            return new AssetFileDescriptor(pfd, thumb[0], thumb[1], extras);
        }
    } catch (IOException e) {
    }
    return new AssetFileDescriptor(pfd, 0, AssetFileDescriptor.UNKNOWN_LENGTH, extras);
}