Camera: Drop ProCamera connections when a Camera connection happens

* Also adds an ICameraServiceListener with available/not available statuses

Bug: 8291653
Change-Id: I24680f1a2dc109510caf451cf7c7bd180b670d84

1 files changed, 86 insertions, 0 deletions

diff --git a/camera/ICameraServiceListener.cpp b/camera/ICameraServiceListener.cpp
new file mode 100644
index 0000000..640ee35
--- /dev/null
+++ b/camera/ICameraServiceListener.cpp
@@ -0,0 +1,86 @@
+/*
+**
+** Copyright 2013, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <binder/Parcel.h>
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+
+#include <camera/ICameraServiceListener.h>
+
+namespace android {
+
+namespace {
+    enum {
+        STATUS_CHANGED = IBinder::FIRST_CALL_TRANSACTION,
+    };
+}; // namespace anonymous
+
+class BpCameraServiceListener: public BpInterface<ICameraServiceListener>
+{
+
+public:
+    BpCameraServiceListener(const sp<IBinder>& impl)
+        : BpInterface<ICameraServiceListener>(impl)
+    {
+    }
+
+    virtual void onStatusChanged(Status status, int32_t cameraId)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(
+                              ICameraServiceListener::getInterfaceDescriptor());
+
+        data.writeInt32(static_cast<int32_t>(status));
+        data.writeInt32(cameraId);
+
+        remote()->transact(STATUS_CHANGED,
+                           data,
+                           &reply,
+                           IBinder::FLAG_ONEWAY);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(CameraServiceListener,
+                         "android.hardware.ICameraServiceListener");
+
+// ----------------------------------------------------------------------
+
+status_t BnCameraServiceListener::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch(code) {
+        case STATUS_CHANGED: {
+            CHECK_INTERFACE(ICameraServiceListener, data, reply);
+
+            Status status = static_cast<Status>(data.readInt32());
+            int32_t cameraId = data.readInt32();
+
+            onStatusChanged(status, cameraId);
+
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android