SurfaceFlinger: Add support for DisplayUtils

Add DisplayUtils class which uses the custom implementations
of ExLayer, ExSurfaceFlinger, ExHWComposer,
and ExVirtualDisplaySurface classes if needed

Change-Id: Ibdd8da5d3d0d602f42b76a15d0994c6aa98bee3f

1 files changed, 106 insertions, 0 deletions

diff --git a/services/surfaceflinger/DisplayUtils.cpp b/services/surfaceflinger/DisplayUtils.cpp
new file mode 100644
index 0000000..3937df0
--- /dev/null
+++ b/services/surfaceflinger/DisplayUtils.cpp
@@ -0,0 +1,106 @@
+/* Copyright (c) 2015, 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 <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include "DisplayUtils.h"
+#include <ExSurfaceFlinger.h>
+#include <ExLayer.h>
+#include <DisplayHardware/ExHWComposer.h>
+#include <DisplayHardware/ExVirtualDisplaySurface.h>
+#include <dlfcn.h>
+
+namespace android {
+
+DisplayUtils* DisplayUtils::sDisplayUtils = NULL;
+bool DisplayUtils::sUseExtendedImpls = false;
+
+DisplayUtils::DisplayUtils() {
+#ifdef QTI_BSP
+    sUseExtendedImpls = true;
+#endif
+}
+
+DisplayUtils* DisplayUtils::getInstance() {
+    if(sDisplayUtils == NULL) {
+        sDisplayUtils = new DisplayUtils();
+    }
+    return sDisplayUtils;
+}
+
+SurfaceFlinger* DisplayUtils::getSFInstance() {
+    if(sUseExtendedImpls) {
+        return new ExSurfaceFlinger();
+    } else {
+        return new SurfaceFlinger();
+    }
+}
+
+Layer* DisplayUtils::getLayerInstance(SurfaceFlinger* flinger,
+                            const sp<Client>& client, const String8& name,
+                            uint32_t w, uint32_t h, uint32_t flags) {
+    if(sUseExtendedImpls) {
+        return new ExLayer(flinger, client, name, w, h, flags);
+    } else {
+        return new Layer(flinger, client, name, w, h, flags);
+    }
+}
+
+HWComposer* DisplayUtils::getHWCInstance(
+                        const sp<SurfaceFlinger>& flinger,
+                        HWComposer::EventHandler& handler) {
+    if(sUseExtendedImpls) {
+        return new ExHWComposer(flinger, handler);
+    } else {
+        return new HWComposer(flinger,handler);
+    }
+}
+
+VirtualDisplaySurface* DisplayUtils::getVDSInstance(HWComposer* hwc, int32_t hwcDisplayId,
+        sp<IGraphicBufferProducer> currentStateSurface, sp<IGraphicBufferProducer> bqProducer,
+        sp<IGraphicBufferConsumer> bqConsumer, String8 currentStateDisplayName,
+        bool currentStateIsSecure)
+{
+    if(sUseExtendedImpls) {
+        return new ExVirtualDisplaySurface(*hwc, hwcDisplayId, currentStateSurface, bqProducer,
+                bqConsumer, currentStateDisplayName, currentStateIsSecure);
+    } else {
+        return new VirtualDisplaySurface(*hwc, hwcDisplayId, currentStateSurface, bqProducer,
+                bqConsumer, currentStateDisplayName);
+    }
+}
+
+}; // namespace android
+