diff options
Diffstat (limited to 'services/java/com/android/server/display/DisplayManagerService.java')
| -rw-r--r-- | services/java/com/android/server/display/DisplayManagerService.java | 82 |
1 files changed, 75 insertions, 7 deletions
diff --git a/services/java/com/android/server/display/DisplayManagerService.java b/services/java/com/android/server/display/DisplayManagerService.java index 02f26b375a2a..bcb677fa455f 100644 --- a/services/java/com/android/server/display/DisplayManagerService.java +++ b/services/java/com/android/server/display/DisplayManagerService.java @@ -35,6 +35,7 @@ import android.os.RemoteException; import android.os.SystemClock; import android.os.SystemProperties; import android.text.TextUtils; +import android.util.Log; import android.util.Slog; import android.util.SparseArray; import android.view.Display; @@ -173,6 +174,9 @@ public final class DisplayManagerService extends IDisplayManager.Stub { // The Wifi display adapter, or null if not registered. private WifiDisplayAdapter mWifiDisplayAdapter; + // The number of active wifi display scan requests. + private int mWifiDisplayScanRequestCount; + // The virtual display adapter, or null if not registered. private VirtualDisplayAdapter mVirtualDisplayAdapter; @@ -458,29 +462,81 @@ public final class DisplayManagerService extends IDisplayManager.Stub { } } - private void onCallbackDied(int pid) { + private void onCallbackDied(CallbackRecord record) { synchronized (mSyncRoot) { - mCallbacks.remove(pid); + mCallbacks.remove(record.mPid); + stopWifiDisplayScanLocked(record); } } @Override // Binder call - public void scanWifiDisplays() { + public void startWifiDisplayScan() { mContext.enforceCallingOrSelfPermission(Manifest.permission.CONFIGURE_WIFI_DISPLAY, - "Permission required to scan wifi displays"); + "Permission required to start wifi display scans"); + final int callingPid = Binder.getCallingPid(); final long token = Binder.clearCallingIdentity(); try { synchronized (mSyncRoot) { + CallbackRecord record = mCallbacks.get(callingPid); + if (record == null) { + throw new IllegalStateException("The calling process has not " + + "registered an IDisplayManagerCallback."); + } + startWifiDisplayScanLocked(record); + } + } finally { + Binder.restoreCallingIdentity(token); + } + } + + private void startWifiDisplayScanLocked(CallbackRecord record) { + if (!record.mWifiDisplayScanRequested) { + record.mWifiDisplayScanRequested = true; + if (mWifiDisplayScanRequestCount++ == 0) { if (mWifiDisplayAdapter != null) { - mWifiDisplayAdapter.requestScanLocked(); + mWifiDisplayAdapter.requestStartScanLocked(); } } + } + } + + @Override // Binder call + public void stopWifiDisplayScan() { + mContext.enforceCallingOrSelfPermission(Manifest.permission.CONFIGURE_WIFI_DISPLAY, + "Permission required to stop wifi display scans"); + + final int callingPid = Binder.getCallingPid(); + final long token = Binder.clearCallingIdentity(); + try { + synchronized (mSyncRoot) { + CallbackRecord record = mCallbacks.get(callingPid); + if (record == null) { + throw new IllegalStateException("The calling process has not " + + "registered an IDisplayManagerCallback."); + } + stopWifiDisplayScanLocked(record); + } } finally { Binder.restoreCallingIdentity(token); } } + private void stopWifiDisplayScanLocked(CallbackRecord record) { + if (record.mWifiDisplayScanRequested) { + record.mWifiDisplayScanRequested = false; + if (--mWifiDisplayScanRequestCount == 0) { + if (mWifiDisplayAdapter != null) { + mWifiDisplayAdapter.requestStopScanLocked(); + } + } else if (mWifiDisplayScanRequestCount < 0) { + Log.wtf(TAG, "mWifiDisplayScanRequestCount became negative: " + + mWifiDisplayScanRequestCount); + mWifiDisplayScanRequestCount = 0; + } + } + } + @Override // Binder call public void connectWifiDisplay(String address) { if (address == null) { @@ -1107,6 +1163,7 @@ public final class DisplayManagerService extends IDisplayManager.Stub { pw.println(" mDefaultViewport=" + mDefaultViewport); pw.println(" mExternalTouchViewport=" + mExternalTouchViewport); pw.println(" mSingleDisplayDemoMode=" + mSingleDisplayDemoMode); + pw.println(" mWifiDisplayScanRequestCount=" + mWifiDisplayScanRequestCount); IndentingPrintWriter ipw = new IndentingPrintWriter(pw, " "); ipw.increaseIndent(); @@ -1134,6 +1191,15 @@ public final class DisplayManagerService extends IDisplayManager.Stub { pw.println(" Display " + displayId + ":"); display.dumpLocked(ipw); } + + final int callbackCount = mCallbacks.size(); + pw.println(); + pw.println("Callbacks: size=" + callbackCount); + for (int i = 0; i < callbackCount; i++) { + CallbackRecord callback = mCallbacks.valueAt(i); + pw.println(" " + i + ": mPid=" + callback.mPid + + ", mWifiDisplayScanRequested=" + callback.mWifiDisplayScanRequested); + } } } @@ -1234,9 +1300,11 @@ public final class DisplayManagerService extends IDisplayManager.Stub { } private final class CallbackRecord implements DeathRecipient { - private final int mPid; + public final int mPid; private final IDisplayManagerCallback mCallback; + public boolean mWifiDisplayScanRequested; + public CallbackRecord(int pid, IDisplayManagerCallback callback) { mPid = pid; mCallback = callback; @@ -1247,7 +1315,7 @@ public final class DisplayManagerService extends IDisplayManager.Stub { if (DEBUG) { Slog.d(TAG, "Display listener for pid " + mPid + " died."); } - onCallbackDied(mPid); + onCallbackDied(this); } public void notifyDisplayEventAsync(int displayId, int event) { |