display: Add HDMI CEC HAL

Implement the spec as per
hardware/libhardware/include/hardware/hdmi_cec.h

Change-Id: I02e1ba9deee1007b7e5922c363b9f5d6c6ad82a9
diff --git a/hdmi_cec/QHDMIClient.cpp b/hdmi_cec/QHDMIClient.cpp
new file mode 100644
index 0000000..176779a
--- /dev/null
+++ b/hdmi_cec/QHDMIClient.cpp
@@ -0,0 +1,65 @@
+/*
+* Copyright (c) 2014 The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*    * Redistributions of source code must retain the above copyright
+*      notice, this list of conditions and the following disclaimer.
+*    * Redistributions in binary form must reproduce the above
+*      copyright notice, this list of conditions and the following
+*      disclaimer in the documentation and/or other materials provided
+*      with the distribution.
+*    * Neither the name of The Linux Foundation. nor the names of its
+*      contributors may be used to endorse or promote products derived
+*      from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <QServiceUtils.h>
+#include "QHDMIClient.h"
+
+using namespace android;
+using namespace qhdmicec;
+using namespace qService;
+
+namespace qClient {
+
+void QHDMIClient::binderDied(const wp<IBinder>& who __unused)
+{
+    ALOGW("%s: Display QService died", __FUNCTION__);
+}
+
+void QHDMIClient::onHdmiHotplug(int connected)
+{
+    ALOGD("%s: HDMI connected event connected: %d", __FUNCTION__, connected);
+    cec_hdmi_hotplug(mCtx, connected);
+}
+
+void QHDMIClient::onCECMessageRecieved(char *msg, ssize_t len)
+{
+    ALOGD("%s: CEC message received len: %zd", __FUNCTION__, len);
+    cec_receive_message(mCtx, msg, len);
+}
+
+void QHDMIClient::registerClient(sp<QHDMIClient>& client)
+{
+    sp<IServiceManager> sm = defaultServiceManager();
+    sp<IBinder> binder = sm->getService(String16("display.qservice"));
+    binder->linkToDeath(client);
+    mQService = interface_cast<IQService>(binder);
+    mQService->connect(interface_cast<IQHDMIClient>(client));
+}
+
+};