Examples with UsbDeviceConnection android.hardware.usb.UsbDeviceConnection used on opensource projects

Example 6 with UsbDeviceConnection

use of android.hardware.usb.UsbDeviceConnection in project android_frameworks_base by DirtyUnicorns.

the class SinkActivity method connect.

private void connect(UsbDevice device) {
    if (mConnected) {
        disconnect();
    }
    // Check whether we have permission to access the device.
    if (!mUsbManager.hasPermission(device)) {
        mLogger.log("Prompting the user for access to the device.");
        Intent intent = new Intent(ACTION_USB_DEVICE_PERMISSION);
        intent.setPackage(getPackageName());
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
        mUsbManager.requestPermission(device, pendingIntent);
        return;
    }
    // Claim the device.
    UsbDeviceConnection conn = mUsbManager.openDevice(device);
    if (conn == null) {
        mLogger.logError("Could not obtain device connection.");
        return;
    }
    UsbInterface iface = device.getInterface(0);
    UsbEndpoint controlEndpoint = iface.getEndpoint(0);
    if (!conn.claimInterface(iface, true)) {
        mLogger.logError("Could not claim interface.");
        return;
    }
    try {
        // If already in accessory mode, then connect to the device.
        if (isAccessory(device)) {
            mLogger.log("Connecting to accessory...");
            int protocolVersion = getProtocol(conn);
            if (protocolVersion < 1) {
                mLogger.logError("Device does not support accessory protocol.");
                return;
            }
            mLogger.log("Protocol version: " + protocolVersion);
            // Setup bulk endpoints.
            UsbEndpoint bulkIn = null;
            UsbEndpoint bulkOut = null;
            for (int i = 0; i < iface.getEndpointCount(); i++) {
                UsbEndpoint ep = iface.getEndpoint(i);
                if (ep.getDirection() == UsbConstants.USB_DIR_IN) {
                    if (bulkIn == null) {
                        mLogger.log(String.format("Bulk IN endpoint: %d", i));
                        bulkIn = ep;
                    }
                } else {
                    if (bulkOut == null) {
                        mLogger.log(String.format("Bulk OUT endpoint: %d", i));
                        bulkOut = ep;
                    }
                }
            }
            if (bulkIn == null || bulkOut == null) {
                mLogger.logError("Unable to find bulk endpoints");
                return;
            }
            mLogger.log("Connected");
            mConnected = true;
            mDevice = device;
            mProtocolVersion = protocolVersion;
            mAccessoryInterface = iface;
            mAccessoryConnection = conn;
            mControlEndpoint = controlEndpoint;
            mTransport = new UsbAccessoryBulkTransport(mLogger, conn, bulkIn, bulkOut);
            if (mProtocolVersion >= 2) {
                registerHid();
            }
            startServices();
            mTransport.startReading();
            return;
        }
        // Do accessory negotiation.
        mLogger.log("Attempting to switch device to accessory mode...");
        // Send get protocol.
        int protocolVersion = getProtocol(conn);
        if (protocolVersion < 1) {
            mLogger.logError("Device does not support accessory protocol.");
            return;
        }
        mLogger.log("Protocol version: " + protocolVersion);
        // Send identifying strings.
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_MANUFACTURER, MANUFACTURER);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_MODEL, MODEL);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_DESCRIPTION, DESCRIPTION);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_VERSION, VERSION);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_URI, URI);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_SERIAL, SERIAL);
        // Send start.
        // The device should re-enumerate as an accessory.
        mLogger.log("Sending accessory start request.");
        int len = conn.controlTransfer(UsbConstants.USB_DIR_OUT | UsbConstants.USB_TYPE_VENDOR, UsbAccessoryConstants.ACCESSORY_START, 0, 0, null, 0, 10000);
        if (len != 0) {
            mLogger.logError("Device refused to switch to accessory mode.");
        } else {
            mLogger.log("Waiting for device to re-enumerate...");
        }
    } finally {
        if (!mConnected) {
            conn.releaseInterface(iface);
        }
    }
}

Example 7 with UsbDeviceConnection

use of android.hardware.usb.UsbDeviceConnection in project android_frameworks_base by DirtyUnicorns.

the class MtpManager method openDevice.

synchronized MtpDeviceRecord openDevice(int deviceId) throws IOException {
    UsbDevice rawDevice = null;
    for (final UsbDevice candidate : mManager.getDeviceList().values()) {
        if (candidate.getDeviceId() == deviceId) {
            rawDevice = candidate;
            break;
        }
    }
    ensureNotNull(rawDevice, "Not found USB device: " + deviceId);
    if (!mManager.hasPermission(rawDevice)) {
        mManager.grantPermission(rawDevice);
        if (!mManager.hasPermission(rawDevice)) {
            throw new IOException("Failed to grant a device permission.");
        }
    }
    final MtpDevice device = new MtpDevice(rawDevice);
    final UsbDeviceConnection connection = ensureNotNull(mManager.openDevice(rawDevice), "Failed to open a USB connection.");
    if (!device.open(connection)) {
        // We cannot open connection when another application use the device.
        throw new BusyDeviceException();
    }
    // Handle devices that fail to obtain storages just after opening a MTP session.
    final int[] storageIds = ensureNotNull(device.getStorageIds(), "Not found MTP storages in the device.");
    mDevices.put(deviceId, device);
    return createDeviceRecord(rawDevice);
}

Example 8 with UsbDeviceConnection

use of android.hardware.usb.UsbDeviceConnection in project android_frameworks_base by DirtyUnicorns.

the class TestUtil method findMtpDevice.

private static UsbDevice findMtpDevice(UsbManager usbManager, MtpManager manager) throws IOException {
    final HashMap<String, UsbDevice> devices = usbManager.getDeviceList();
    if (devices.size() == 0) {
        throw new IOException("Device not found.");
    }
    final UsbDevice device = devices.values().iterator().next();
    // Tries to get ownership of the device in case that another application use it.
    if (usbManager.hasPermission(device)) {
        final UsbDeviceConnection connection = usbManager.openDevice(device);
        for (int i = 0; i < device.getInterfaceCount(); i++) {
            // Since the test runs real environment, we need to call claim interface with
            // force = true to rob interfaces from other applications.
            connection.claimInterface(device.getInterface(i), true);
            connection.releaseInterface(device.getInterface(i));
        }
        connection.close();
    }
    manager.openDevice(device.getDeviceId());
    return device;
}

Example 9 with UsbDeviceConnection

use of android.hardware.usb.UsbDeviceConnection in project android_frameworks_base by crdroidandroid.

the class MtpManager method openDevice.

synchronized MtpDeviceRecord openDevice(int deviceId) throws IOException {
    UsbDevice rawDevice = null;
    for (final UsbDevice candidate : mManager.getDeviceList().values()) {
        if (candidate.getDeviceId() == deviceId) {
            rawDevice = candidate;
            break;
        }
    }
    ensureNotNull(rawDevice, "Not found USB device: " + deviceId);
    if (!mManager.hasPermission(rawDevice)) {
        mManager.grantPermission(rawDevice);
        if (!mManager.hasPermission(rawDevice)) {
            throw new IOException("Failed to grant a device permission.");
        }
    }
    final MtpDevice device = new MtpDevice(rawDevice);
    final UsbDeviceConnection connection = ensureNotNull(mManager.openDevice(rawDevice), "Failed to open a USB connection.");
    if (!device.open(connection)) {
        // We cannot open connection when another application use the device.
        throw new BusyDeviceException();
    }
    // Handle devices that fail to obtain storages just after opening a MTP session.
    final int[] storageIds = ensureNotNull(device.getStorageIds(), "Not found MTP storages in the device.");
    mDevices.put(deviceId, device);
    return createDeviceRecord(rawDevice);
}

Example 10 with UsbDeviceConnection

use of android.hardware.usb.UsbDeviceConnection in project android_frameworks_base by crdroidandroid.

the class SinkActivity method connect.

private void connect(UsbDevice device) {
    if (mConnected) {
        disconnect();
    }
    // Check whether we have permission to access the device.
    if (!mUsbManager.hasPermission(device)) {
        mLogger.log("Prompting the user for access to the device.");
        Intent intent = new Intent(ACTION_USB_DEVICE_PERMISSION);
        intent.setPackage(getPackageName());
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
        mUsbManager.requestPermission(device, pendingIntent);
        return;
    }
    // Claim the device.
    UsbDeviceConnection conn = mUsbManager.openDevice(device);
    if (conn == null) {
        mLogger.logError("Could not obtain device connection.");
        return;
    }
    UsbInterface iface = device.getInterface(0);
    UsbEndpoint controlEndpoint = iface.getEndpoint(0);
    if (!conn.claimInterface(iface, true)) {
        mLogger.logError("Could not claim interface.");
        return;
    }
    try {
        // If already in accessory mode, then connect to the device.
        if (isAccessory(device)) {
            mLogger.log("Connecting to accessory...");
            int protocolVersion = getProtocol(conn);
            if (protocolVersion < 1) {
                mLogger.logError("Device does not support accessory protocol.");
                return;
            }
            mLogger.log("Protocol version: " + protocolVersion);
            // Setup bulk endpoints.
            UsbEndpoint bulkIn = null;
            UsbEndpoint bulkOut = null;
            for (int i = 0; i < iface.getEndpointCount(); i++) {
                UsbEndpoint ep = iface.getEndpoint(i);
                if (ep.getDirection() == UsbConstants.USB_DIR_IN) {
                    if (bulkIn == null) {
                        mLogger.log(String.format("Bulk IN endpoint: %d", i));
                        bulkIn = ep;
                    }
                } else {
                    if (bulkOut == null) {
                        mLogger.log(String.format("Bulk OUT endpoint: %d", i));
                        bulkOut = ep;
                    }
                }
            }
            if (bulkIn == null || bulkOut == null) {
                mLogger.logError("Unable to find bulk endpoints");
                return;
            }
            mLogger.log("Connected");
            mConnected = true;
            mDevice = device;
            mProtocolVersion = protocolVersion;
            mAccessoryInterface = iface;
            mAccessoryConnection = conn;
            mControlEndpoint = controlEndpoint;
            mTransport = new UsbAccessoryBulkTransport(mLogger, conn, bulkIn, bulkOut);
            if (mProtocolVersion >= 2) {
                registerHid();
            }
            startServices();
            mTransport.startReading();
            return;
        }
        // Do accessory negotiation.
        mLogger.log("Attempting to switch device to accessory mode...");
        // Send get protocol.
        int protocolVersion = getProtocol(conn);
        if (protocolVersion < 1) {
            mLogger.logError("Device does not support accessory protocol.");
            return;
        }
        mLogger.log("Protocol version: " + protocolVersion);
        // Send identifying strings.
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_MANUFACTURER, MANUFACTURER);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_MODEL, MODEL);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_DESCRIPTION, DESCRIPTION);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_VERSION, VERSION);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_URI, URI);
        sendString(conn, UsbAccessoryConstants.ACCESSORY_STRING_SERIAL, SERIAL);
        // Send start.
        // The device should re-enumerate as an accessory.
        mLogger.log("Sending accessory start request.");
        int len = conn.controlTransfer(UsbConstants.USB_DIR_OUT | UsbConstants.USB_TYPE_VENDOR, UsbAccessoryConstants.ACCESSORY_START, 0, 0, null, 0, 10000);
        if (len != 0) {
            mLogger.logError("Device refused to switch to accessory mode.");
        } else {
            mLogger.log("Waiting for device to re-enumerate...");
        }
    } finally {
        if (!mConnected) {
            conn.releaseInterface(iface);
        }
    }
}