Merge "Implement a "blacklist" for ALSA devices." into qt-dev (fcc06eec) · Commits · e / os / android_frameworks_base

services/usb/java/com/android/server/usb/UsbAlsaManager.java

+52 −2

Original line number	Diff line number	Diff line
		@@ -35,7 +35,9 @@ import com.android.server.usb.descriptors.UsbDescriptorParser;
		import libcore.io.IoUtils;

		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.HashMap;
		import java.util.List;

		/**
		* UsbAlsaManager manages USB audio and MIDI devices.
		@@ -61,6 +63,50 @@ public final class UsbAlsaManager {
		private final ArrayList<UsbAlsaDevice> mAlsaDevices = new ArrayList<UsbAlsaDevice>();
		private UsbAlsaDevice mSelectedDevice;

		//
		// Device Blacklist
		//
		// This exists due to problems with Sony game controllers which present as an audio device
		// even if no headset is connected and have no way to set the volume on the unit.
		// Handle this by simply declining to use them as an audio device.
		private static final int USB_VENDORID_SONY = 0x054C;
		private static final int USB_PRODUCTID_PS4CONTROLLER_ZCT1 = 0x05C4;
		private static final int USB_PRODUCTID_PS4CONTROLLER_ZCT2 = 0x09CC;

		private static final int USB_BLACKLIST_OUTPUT = 0x0001;
		private static final int USB_BLACKLIST_INPUT = 0x0002;

		private static class BlackListEntry {
		final int mVendorId;
		final int mProductId;
		final int mFlags;

		BlackListEntry(int vendorId, int productId, int flags) {
		mVendorId = vendorId;
		mProductId = productId;
		mFlags = flags;
		}
		}

		static final List<BlackListEntry> sDeviceBlacklist = Arrays.asList(
		new BlackListEntry(USB_VENDORID_SONY,
		USB_PRODUCTID_PS4CONTROLLER_ZCT1,
		USB_BLACKLIST_OUTPUT),
		new BlackListEntry(USB_VENDORID_SONY,
		USB_PRODUCTID_PS4CONTROLLER_ZCT2,
		USB_BLACKLIST_OUTPUT));

		private static boolean isDeviceBlacklisted(int vendorId, int productId, int flags) {
		for (BlackListEntry entry : sDeviceBlacklist) {
		if (entry.mVendorId == vendorId && entry.mProductId == productId) {
		// see if the type flag is set
		return (entry.mFlags & flags) != 0;
		}
		}

		return false;
		}

		/**
		* List of connected MIDI devices
		*/
		@@ -179,8 +225,12 @@ public final class UsbAlsaManager {
		}

		// Add it to the devices list
		boolean hasInput = parser.hasInput();
		boolean hasOutput = parser.hasOutput();
		boolean hasInput = parser.hasInput()
		&& !isDeviceBlacklisted(usbDevice.getVendorId(), usbDevice.getProductId(),
		USB_BLACKLIST_INPUT);
		boolean hasOutput = parser.hasOutput()
		&& !isDeviceBlacklisted(usbDevice.getVendorId(), usbDevice.getProductId(),
		USB_BLACKLIST_OUTPUT);
		if (DEBUG) {
		Slog.d(TAG, "hasInput: " + hasInput + " hasOutput:" + hasOutput);
		}