Add uniqueId to Virtual Display and pass through to inputflinger (2/2)
This CL adds:
1) Adds uniqueId (protected via system/sig permission) to virtual
displays.
2) Add support for N virtual display viewports into inputflinger.
3) Set the virtual display's viewports in inputflinger if it has the
uniqueId value set to non-null. (a) Moving the new viewport from java to
native inputflinger and (b) adding "uniqueId" value to viewports makes
up the great majority of this change.
4) From the inputflinger side, we also read in a new value from the
input device configuration files called 'touch.displayId'.
5) When touch.displayId and the virtual display's uniqueId match,
inputflinger links the two.
Test: Start VR and ensure that the virtual viewport shows up when running
'adb shell dump input". Run a VR app, and ensure that the virtual input
device is associated with the new virtual viewport.
Bug: 36051620
Change-Id: I662f09f863a3dc94c570e7e7f30b83888b3f514c
diff --git a/include/input/DisplayViewport.h b/include/input/DisplayViewport.h
new file mode 100644
index 0000000..86da4d3
--- /dev/null
+++ b/include/input/DisplayViewport.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef _LIBINPUT_DISPLAY_VIEWPORT_H
+#define _LIBINPUT_DISPLAY_VIEWPORT_H
+
+#include <ui/DisplayInfo.h>
+#include <input/Input.h>
+
+namespace android {
+
+/*
+ * Describes how coordinates are mapped on a physical display.
+ * See com.android.server.display.DisplayViewport.
+ */
+struct DisplayViewport {
+ int32_t displayId; // -1 if invalid
+ int32_t orientation;
+ int32_t logicalLeft;
+ int32_t logicalTop;
+ int32_t logicalRight;
+ int32_t logicalBottom;
+ int32_t physicalLeft;
+ int32_t physicalTop;
+ int32_t physicalRight;
+ int32_t physicalBottom;
+ int32_t deviceWidth;
+ int32_t deviceHeight;
+ String8 uniqueId;
+
+ DisplayViewport() :
+ displayId(ADISPLAY_ID_NONE), orientation(DISPLAY_ORIENTATION_0),
+ logicalLeft(0), logicalTop(0), logicalRight(0), logicalBottom(0),
+ physicalLeft(0), physicalTop(0), physicalRight(0), physicalBottom(0),
+ deviceWidth(0), deviceHeight(0) {
+ }
+
+ bool operator==(const DisplayViewport& other) const {
+ return displayId == other.displayId
+ && orientation == other.orientation
+ && logicalLeft == other.logicalLeft
+ && logicalTop == other.logicalTop
+ && logicalRight == other.logicalRight
+ && logicalBottom == other.logicalBottom
+ && physicalLeft == other.physicalLeft
+ && physicalTop == other.physicalTop
+ && physicalRight == other.physicalRight
+ && physicalBottom == other.physicalBottom
+ && deviceWidth == other.deviceWidth
+ && deviceHeight == other.deviceHeight
+ && uniqueId == other.uniqueId;
+ }
+
+ bool operator!=(const DisplayViewport& other) const {
+ return !(*this == other);
+ }
+
+ inline bool isValid() const {
+ return displayId >= 0;
+ }
+
+ void setNonDisplayViewport(int32_t width, int32_t height) {
+ displayId = ADISPLAY_ID_NONE;
+ orientation = DISPLAY_ORIENTATION_0;
+ logicalLeft = 0;
+ logicalTop = 0;
+ logicalRight = width;
+ logicalBottom = height;
+ physicalLeft = 0;
+ physicalTop = 0;
+ physicalRight = width;
+ physicalBottom = height;
+ deviceWidth = width;
+ deviceHeight = height;
+ uniqueId.clear();
+ }
+};
+
+/**
+ * Describes the different type of viewports supported by input flinger.
+ * Keep in sync with values in InputManagerService.java.
+ */
+enum class ViewportType : int32_t {
+ VIEWPORT_INTERNAL = 1,
+ VIEWPORT_EXTERNAL = 2,
+ VIEWPORT_VIRTUAL = 3,
+};
+
+} // namespace android
+
+#endif // _LIBINPUT_DISPLAY_VIEWPORT_H