Input device calibration and capabilities.

Finished the input device capability API.
Added a mechanism for calibrating touch devices to obtain more
accurate information about the touch contact area.
Improved pointer location to show new coordinates and capabilities.
Optimized pointer location display and formatting to avoid allocating large
numbers of temporary objects.  The GC churn was causing the application to
stutter very badly when more than a couple of fingers were down).
Added more diagnostics.

Change-Id: Ie25380278ed6f16c5b04cd9df848015850383498

3 files changed, 827 insertions, 250 deletions

diff --git a/libs/ui/EventHub.cpp b/libs/ui/EventHub.cpp
index 891661d..1d38b4b 100644
--- a/libs/ui/EventHub.cpp
+++ b/libs/ui/EventHub.cpp
@@ -139,11 +139,7 @@ uint32_t EventHub::getDeviceClasses(int32_t deviceId) const
 
 status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis,
         RawAbsoluteAxisInfo* outAxisInfo) const {
-    outAxisInfo->valid = false;
-    outAxisInfo->minValue = 0;
-    outAxisInfo->maxValue = 0;
-    outAxisInfo->flat = 0;
-    outAxisInfo->fuzz = 0;
+    outAxisInfo->clear();
 
     AutoMutex _l(mLock);
     device_t* device = getDevice(deviceId);
@@ -709,8 +705,7 @@ int EventHub::open_device(const char *deviceName)
     LOGV("Getting absolute controllers...");
     if (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask) >= 0) {
         // Is this a new modern multi-touch driver?
-        if (test_bit(ABS_MT_TOUCH_MAJOR, abs_bitmask)
-                && test_bit(ABS_MT_POSITION_X, abs_bitmask)
+        if (test_bit(ABS_MT_POSITION_X, abs_bitmask)
                 && test_bit(ABS_MT_POSITION_Y, abs_bitmask)) {
             device->classes |= INPUT_DEVICE_CLASS_TOUCHSCREEN | INPUT_DEVICE_CLASS_TOUCHSCREEN_MT;
 
diff --git a/libs/ui/InputDispatcher.cpp b/libs/ui/InputDispatcher.cpp
index e35050c..886c785 100644
--- a/libs/ui/InputDispatcher.cpp
+++ b/libs/ui/InputDispatcher.cpp
@@ -405,12 +405,15 @@ void InputDispatcher::processMotionLockedInterruptible(
         sampleCount += 1;
     }
     for (uint32_t i = 0; i < entry->pointerCount; i++) {
-        LOGD("  Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f",
+        LOGD("  Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, "
+                "touchMajor=%f, touchMinor=%d, toolMajor=%f, toolMinor=%f, "
+                "orientation=%f",
                 i, entry->pointerIds[i],
-                sample->pointerCoords[i].x,
-                sample->pointerCoords[i].y,
-                sample->pointerCoords[i].pressure,
-                sample->pointerCoords[i].size);
+                sample->pointerCoords[i].x, sample->pointerCoords[i].y,
+                sample->pointerCoords[i].pressure, sample->pointerCoords[i].size,
+                sample->pointerCoords[i].touchMajor, sample->pointerCoords[i].touchMinor,
+                sample->pointerCoords[i].toolMajor, sample->pointerCoords[i].toolMinor,
+                sample->pointerCoords[i].orientation);
     }
 
     // Keep in mind that due to batching, it is possible for the number of samples actually
@@ -1080,9 +1083,14 @@ void InputDispatcher::notifyMotion(nsecs_t eventTime, int32_t deviceId, int32_t
             eventTime, deviceId, source, policyFlags, action, metaState, edgeFlags,
             xPrecision, yPrecision, downTime);
     for (uint32_t i = 0; i < pointerCount; i++) {
-        LOGD("  Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f",
+        LOGD("  Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, "
+                "touchMajor=%f, touchMinor=%d, toolMajor=%f, toolMinor=%f, "
+                "orientation=%f",
                 i, pointerIds[i], pointerCoords[i].x, pointerCoords[i].y,
-                pointerCoords[i].pressure, pointerCoords[i].size);
+                pointerCoords[i].pressure, pointerCoords[i].size,
+                pointerCoords[i].touchMajor, pointerCoords[i].touchMinor,
+                pointerCoords[i].toolMajor, pointerCoords[i].toolMinor,
+                pointerCoords[i].orientation);
     }
 #endif
 
diff --git a/libs/ui/InputReader.cpp b/libs/ui/InputReader.cpp
index 6f042ec..8ffb48d 100644
--- a/libs/ui/InputReader.cpp
+++ b/libs/ui/InputReader.cpp
@@ -26,11 +26,14 @@
 #include <ui/InputReader.h>
 
 #include <stddef.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <errno.h>
 #include <limits.h>
 #include <math.h>
 
+#define INDENT "  "
+
 namespace android {
 
 // --- Static Functions ---
@@ -52,6 +55,14 @@ inline static void swap(T& a, T& b) {
     b = temp;
 }
 
+inline static float avg(float x, float y) {
+    return (x + y) / 2;
+}
+
+inline static float pythag(float x, float y) {
+    return sqrtf(x * x + y * y);
+}
+
 
 int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState) {
     int32_t mask;
@@ -116,6 +127,64 @@ static inline bool sourcesMatchMask(uint32_t sources, uint32_t sourceMask) {
 }
 
 
+// --- InputDeviceCalibration ---
+
+InputDeviceCalibration::InputDeviceCalibration() {
+}
+
+void InputDeviceCalibration::clear() {
+    mProperties.clear();
+}
+
+void InputDeviceCalibration::addProperty(const String8& key, const String8& value) {
+    mProperties.add(key, value);
+}
+
+bool InputDeviceCalibration::tryGetProperty(const String8& key, String8& outValue) const {
+    ssize_t index = mProperties.indexOfKey(key);
+    if (index < 0) {
+        return false;
+    }
+
+    outValue = mProperties.valueAt(index);
+    return true;
+}
+
+bool InputDeviceCalibration::tryGetProperty(const String8& key, int32_t& outValue) const {
+    String8 stringValue;
+    if (! tryGetProperty(key, stringValue) || stringValue.length() == 0) {
+        return false;
+    }
+
+    char* end;
+    int value = strtol(stringValue.string(), & end, 10);
+    if (*end != '\0') {
+        LOGW("Input device calibration key '%s' has invalid value '%s'.  Expected an integer.",
+                key.string(), stringValue.string());
+        return false;
+    }
+    outValue = value;
+    return true;
+}
+
+bool InputDeviceCalibration::tryGetProperty(const String8& key, float& outValue) const {
+    String8 stringValue;
+    if (! tryGetProperty(key, stringValue) || stringValue.length() == 0) {
+        return false;
+    }
+
+    char* end;
+    float value = strtof(stringValue.string(), & end);
+    if (*end != '\0') {
+        LOGW("Input device calibration key '%s' has invalid value '%s'.  Expected a float.",
+                key.string(), stringValue.string());
+        return false;
+    }
+    outValue = value;
+    return true;
+}
+
+
 // --- InputReader ---
 
 InputReader::InputReader(const sp<EventHubInterface>& eventHub,
@@ -167,9 +236,18 @@ void InputReader::addDevice(nsecs_t when, int32_t deviceId) {
     String8 name = mEventHub->getDeviceName(deviceId);
     uint32_t classes = mEventHub->getDeviceClasses(deviceId);
 
+    // Write a log message about the added device as a heading for subsequent log messages.
+    LOGI("Device added: id=0x%x, name=%s", deviceId, name.string());
+
     InputDevice* device = createDevice(deviceId, name, classes);
     device->configure();
 
+    if (device->isIgnored()) {
+        LOGI(INDENT "Sources: none (device is ignored)");
+    } else {
+        LOGI(INDENT "Sources: 0x%08x", device->getSources());
+    }
+
     bool added = false;
     { // acquire device registry writer lock
         RWLock::AutoWLock _wl(mDeviceRegistryLock);
@@ -187,14 +265,6 @@ void InputReader::addDevice(nsecs_t when, int32_t deviceId) {
         return;
     }
 
-    if (device->isIgnored()) {
-        LOGI("Device added: id=0x%x, name=%s (ignored non-input device)",
-                deviceId, name.string());
-    } else {
-        LOGI("Device added: id=0x%x, name=%s, sources=%08x",
-                deviceId, name.string(), device->getSources());
-    }
-
     handleConfigurationChanged(when);
 }
 
@@ -217,8 +287,7 @@ void InputReader::removeDevice(nsecs_t when, int32_t deviceId) {
         return;
     }
 
-    device->reset();
-
+    // Write a log message about the removed device as a heading for subsequent log messages.
     if (device->isIgnored()) {
         LOGI("Device removed: id=0x%x, name=%s (ignored non-input device)",
                 device->getId(), device->getName().string());
@@ -227,6 +296,8 @@ void InputReader::removeDevice(nsecs_t when, int32_t deviceId) {
                 device->getId(), device->getName().string(), device->getSources());
     }
 
+    device->reset();
+
     delete device;
 
     handleConfigurationChanged(when);
@@ -537,6 +608,10 @@ void InputDevice::addMapper(InputMapper* mapper) {
 }
 
 void InputDevice::configure() {
+    if (! isIgnored()) {
+        mContext->getPolicy()->getInputDeviceCalibration(mName, mCalibration);
+    }
+
     mSources = 0;
 
     size_t numMappers = mMappers.size();
@@ -1121,13 +1196,35 @@ void TouchInputMapper::populateDeviceInfo(InputDeviceInfo* info) {
 
         info->addMotionRange(AINPUT_MOTION_RANGE_X, mLocked.orientedRanges.x);
         info->addMotionRange(AINPUT_MOTION_RANGE_Y, mLocked.orientedRanges.y);
-        info->addMotionRange(AINPUT_MOTION_RANGE_PRESSURE, mLocked.orientedRanges.pressure);
-        info->addMotionRange(AINPUT_MOTION_RANGE_SIZE, mLocked.orientedRanges.size);
-        info->addMotionRange(AINPUT_MOTION_RANGE_TOUCH_MAJOR, mLocked.orientedRanges.touchMajor);
-        info->addMotionRange(AINPUT_MOTION_RANGE_TOUCH_MINOR, mLocked.orientedRanges.touchMinor);
-        info->addMotionRange(AINPUT_MOTION_RANGE_TOOL_MAJOR, mLocked.orientedRanges.toolMajor);
-        info->addMotionRange(AINPUT_MOTION_RANGE_TOOL_MINOR, mLocked.orientedRanges.toolMinor);
-        info->addMotionRange(AINPUT_MOTION_RANGE_ORIENTATION, mLocked.orientedRanges.orientation);
+
+        if (mLocked.orientedRanges.havePressure) {
+            info->addMotionRange(AINPUT_MOTION_RANGE_PRESSURE,
+                    mLocked.orientedRanges.pressure);
+        }
+
+        if (mLocked.orientedRanges.haveSize) {
+            info->addMotionRange(AINPUT_MOTION_RANGE_SIZE,
+                    mLocked.orientedRanges.size);
+        }
+
+        if (mLocked.orientedRanges.haveTouchArea) {
+            info->addMotionRange(AINPUT_MOTION_RANGE_TOUCH_MAJOR,
+                    mLocked.orientedRanges.touchMajor);
+            info->addMotionRange(AINPUT_MOTION_RANGE_TOUCH_MINOR,
+                    mLocked.orientedRanges.touchMinor);
+        }
+
+        if (mLocked.orientedRanges.haveToolArea) {
+            info->addMotionRange(AINPUT_MOTION_RANGE_TOOL_MAJOR,
+                    mLocked.orientedRanges.toolMajor);
+            info->addMotionRange(AINPUT_MOTION_RANGE_TOOL_MINOR,
+                    mLocked.orientedRanges.toolMinor);
+        }
+
+        if (mLocked.orientedRanges.haveOrientation) {
+            info->addMotionRange(AINPUT_MOTION_RANGE_ORIENTATION,
+                    mLocked.orientedRanges.orientation);
+        }
     } // release lock
 }
 
@@ -1144,77 +1241,72 @@ void TouchInputMapper::initializeLocked() {
     mJumpyTouchFilter.jumpyPointsDropped = 0;
 
     mLocked.currentVirtualKey.down = false;
+
+    mLocked.orientedRanges.havePressure = false;
+    mLocked.orientedRanges.haveSize = false;
+    mLocked.orientedRanges.haveTouchArea = false;
+    mLocked.orientedRanges.haveToolArea = false;
+    mLocked.orientedRanges.haveOrientation = false;
+}
+
+static void logAxisInfo(RawAbsoluteAxisInfo axis, const char* name) {
+    if (axis.valid) {
+        LOGI(INDENT "Raw %s axis: min=%d, max=%d, flat=%d, fuzz=%d",
+                name, axis.minValue, axis.maxValue, axis.flat, axis.fuzz);
+    } else {
+        LOGI(INDENT "Raw %s axis: unknown range", name);
+    }
 }
 
 void TouchInputMapper::configure() {
     InputMapper::configure();
 
     // Configure basic parameters.
-    mParameters.useBadTouchFilter = getPolicy()->filterTouchEvents();
-    mParameters.useAveragingTouchFilter = getPolicy()->filterTouchEvents();
-    mParameters.useJumpyTouchFilter = getPolicy()->filterJumpyTouchEvents();
+    configureParameters();
 
     // Configure absolute axis information.
-    configureAxes();
+    configureRawAxes();
+    logRawAxes();
+
+    // Prepare input device calibration.
+    parseCalibration();
+    resolveCalibration();
+    logCalibration();
 
     { // acquire lock
         AutoMutex _l(mLock);
 
-        // Configure pressure factors.
-        if (mAxes.pressure.valid) {
-            mLocked.pressureOrigin = mAxes.pressure.minValue;
-            mLocked.pressureScale = 1.0f / mAxes.pressure.getRange();
-        } else {
-            mLocked.pressureOrigin = 0;
-            mLocked.pressureScale = 1.0f;
-        }
-
-        mLocked.orientedRanges.pressure.min = 0.0f;
-        mLocked.orientedRanges.pressure.max = 1.0f;
-        mLocked.orientedRanges.pressure.flat = 0.0f;
-        mLocked.orientedRanges.pressure.fuzz = mLocked.pressureScale;
-
-        // Configure size factors.
-        if (mAxes.size.valid) {
-            mLocked.sizeOrigin = mAxes.size.minValue;
-            mLocked.sizeScale = 1.0f / mAxes.size.getRange();
-        } else {
-            mLocked.sizeOrigin = 0;
-            mLocked.sizeScale = 1.0f;
-        }
-
-        mLocked.orientedRanges.size.min = 0.0f;
-        mLocked.orientedRanges.size.max = 1.0f;
-        mLocked.orientedRanges.size.flat = 0.0f;
-        mLocked.orientedRanges.size.fuzz = mLocked.sizeScale;
-
-        // Configure orientation factors.
-        if (mAxes.orientation.valid && mAxes.orientation.maxValue > 0) {
-            mLocked.orientationScale = float(M_PI_2) / mAxes.orientation.maxValue;
-        } else {
-            mLocked.orientationScale = 0.0f;
-        }
-
-        mLocked.orientedRanges.orientation.min = - M_PI_2;
-        mLocked.orientedRanges.orientation.max = M_PI_2;
-        mLocked.orientedRanges.orientation.flat = 0;
-        mLocked.orientedRanges.orientation.fuzz = mLocked.orientationScale;
-
-        // Configure surface dimensions and orientation.
+         // Configure surface dimensions and orientation.
         configureSurfaceLocked();
     } // release lock
 }
 
-void TouchInputMapper::configureAxes() {
-    mAxes.x.valid = false;
-    mAxes.y.valid = false;
-    mAxes.pressure.valid = false;
-    mAxes.size.valid = false;
-    mAxes.touchMajor.valid = false;
-    mAxes.touchMinor.valid = false;
-    mAxes.toolMajor.valid = false;
-    mAxes.toolMinor.valid = false;
-    mAxes.orientation.valid = false;
+void TouchInputMapper::configureParameters() {
+    mParameters.useBadTouchFilter = getPolicy()->filterTouchEvents();
+    mParameters.useAveragingTouchFilter = getPolicy()->filterTouchEvents();
+    mParameters.useJumpyTouchFilter = getPolicy()->filterJumpyTouchEvents();
+}
+
+void TouchInputMapper::configureRawAxes() {
+    mRawAxes.x.clear();
+    mRawAxes.y.clear();
+    mRawAxes.pressure.clear();
+    mRawAxes.touchMajor.clear();
+    mRawAxes.touchMinor.clear();
+    mRawAxes.toolMajor.clear();
+    mRawAxes.toolMinor.clear();
+    mRawAxes.orientation.clear();
+}
+
+void TouchInputMapper::logRawAxes() {
+    logAxisInfo(mRawAxes.x, "x");
+    logAxisInfo(mRawAxes.y, "y");
+    logAxisInfo(mRawAxes.pressure, "pressure");
+    logAxisInfo(mRawAxes.touchMajor, "touchMajor");
+    logAxisInfo(mRawAxes.touchMinor, "touchMinor");
+    logAxisInfo(mRawAxes.toolMajor, "toolMajor");
+    logAxisInfo(mRawAxes.toolMinor, "toolMinor");
+    logAxisInfo(mRawAxes.orientation, "orientation");
 }
 
 bool TouchInputMapper::configureSurfaceLocked() {
@@ -1228,8 +1320,8 @@ bool TouchInputMapper::configureSurfaceLocked() {
         }
     } else {
         orientation = InputReaderPolicyInterface::ROTATION_0;
-        width = mAxes.x.getRange();
-        height = mAxes.y.getRange();
+        width = mRawAxes.x.getRange();
+        height = mRawAxes.y.getRange();
     }
 
     bool orientationChanged = mLocked.surfaceOrientation != orientation;
@@ -1239,24 +1331,24 @@ bool TouchInputMapper::configureSurfaceLocked() {
 
     bool sizeChanged = mLocked.surfaceWidth != width || mLocked.surfaceHeight != height;
     if (sizeChanged) {
+        LOGI("Device configured: id=0x%x, name=%s (display size was changed)",
+                getDeviceId(), getDeviceName().string());
+
         mLocked.surfaceWidth = width;
         mLocked.surfaceHeight = height;
 
-        // Compute size-dependent translation and scaling factors and place virtual keys.
-        if (mAxes.x.valid && mAxes.y.valid) {
-            mLocked.xOrigin = mAxes.x.minValue;
-            mLocked.yOrigin = mAxes.y.minValue;
-
-            LOGI("Device configured: id=0x%x, name=%s (display size was changed)",
-                    getDeviceId(), getDeviceName().string());
-
-            mLocked.xScale = float(width) / mAxes.x.getRange();
-            mLocked.yScale = float(height) / mAxes.y.getRange();
+        // Configure X and Y factors.
+        if (mRawAxes.x.valid && mRawAxes.y.valid) {
+            mLocked.xOrigin = mRawAxes.x.minValue;
+            mLocked.yOrigin = mRawAxes.y.minValue;
+            mLocked.xScale = float(width) / mRawAxes.x.getRange();
+            mLocked.yScale = float(height) / mRawAxes.y.getRange();
             mLocked.xPrecision = 1.0f / mLocked.xScale;
             mLocked.yPrecision = 1.0f / mLocked.yScale;
 
             configureVirtualKeysLocked();
         } else {
+            LOGW(INDENT "Touch device did not report support for X or Y axis!");
             mLocked.xOrigin = 0;
             mLocked.yOrigin = 0;
             mLocked.xScale = 1.0f;
@@ -1265,22 +1357,112 @@ bool TouchInputMapper::configureSurfaceLocked() {
             mLocked.yPrecision = 1.0f;
         }
 
-        // Configure touch and tool area ranges.
-        float diagonal = sqrt(float(width * width + height * height));
-        float diagonalFuzz = sqrt(mLocked.xScale * mLocked.xScale
-                + mLocked.yScale * mLocked.yScale);
+        // Scale factor for terms that are not oriented in a particular axis.
+        // If the pixels are square then xScale == yScale otherwise we fake it
+        // by choosing an average.
+        mLocked.geometricScale = avg(mLocked.xScale, mLocked.yScale);
+
+        // Size of diagonal axis.
+        float diagonalSize = pythag(width, height);
+
+        // TouchMajor and TouchMinor factors.
+        if (mCalibration.touchAreaCalibration != Calibration::TOUCH_AREA_CALIBRATION_NONE) {
+            mLocked.orientedRanges.haveTouchArea = true;
+            mLocked.orientedRanges.touchMajor.min = 0;
+            mLocked.orientedRanges.touchMajor.max = diagonalSize;
+            mLocked.orientedRanges.touchMajor.flat = 0;
+            mLocked.orientedRanges.touchMajor.fuzz = 0;
+            mLocked.orientedRanges.touchMinor = mLocked.orientedRanges.touchMajor;
+        }
+
+        // ToolMajor and ToolMinor factors.
+        if (mCalibration.toolAreaCalibration != Calibration::TOOL_AREA_CALIBRATION_NONE) {
+            mLocked.toolAreaLinearScale = 0;
+            mLocked.toolAreaLinearBias = 0;
+            if (mCalibration.toolAreaCalibration == Calibration::TOOL_AREA_CALIBRATION_LINEAR) {
+                if (mCalibration.haveToolAreaLinearScale) {
+                    mLocked.toolAreaLinearScale = mCalibration.toolAreaLinearScale;
+                } else if (mRawAxes.toolMajor.valid && mRawAxes.toolMajor.maxValue != 0) {
+                    mLocked.toolAreaLinearScale = float(min(width, height))
+                            / mRawAxes.toolMajor.maxValue;
+                }
+
+                if (mCalibration.haveToolAreaLinearBias) {
+                    mLocked.toolAreaLinearBias = mCalibration.toolAreaLinearBias;
+                }
+            }
+
+            mLocked.orientedRanges.haveToolArea = true;
+            mLocked.orientedRanges.toolMajor.min = 0;
+            mLocked.orientedRanges.toolMajor.max = diagonalSize;
+            mLocked.orientedRanges.toolMajor.flat = 0;
+            mLocked.orientedRanges.toolMajor.fuzz = 0;
+            mLocked.orientedRanges.toolMinor = mLocked.orientedRanges.toolMajor;
+        }
+
+        // Pressure factors.
+        if (mCalibration.pressureCalibration != Calibration::PRESSURE_CALIBRATION_NONE) {
+            RawAbsoluteAxisInfo rawPressureAxis;
+            switch (mCalibration.pressureSource) {
+            case Calibration::PRESSURE_SOURCE_PRESSURE:
+                rawPressureAxis = mRawAxes.pressure;
+                break;
+            case Calibration::PRESSURE_SOURCE_TOUCH:
+                rawPressureAxis = mRawAxes.touchMajor;
+                break;
+            default:
+                rawPressureAxis.clear();
+            }
+
+            mLocked.pressureScale = 0;
+            if (mCalibration.pressureCalibration == Calibration::PRESSURE_CALIBRATION_PHYSICAL
+                    || mCalibration.pressureCalibration
+                            == Calibration::PRESSURE_CALIBRATION_AMPLITUDE) {
+                if (mCalibration.havePressureScale) {
+                    mLocked.pressureScale = mCalibration.pressureScale;
+                } else if (rawPressureAxis.valid && rawPressureAxis.maxValue != 0) {
+                    mLocked.pressureScale = 1.0f / rawPressureAxis.maxValue;
+                }
+            }
+
+            mLocked.orientedRanges.havePressure = true;
+            mLocked.orientedRanges.pressure.min = 0;
+            mLocked.orientedRanges.pressure.max = 1.0;
+            mLocked.orientedRanges.pressure.flat = 0;
+            mLocked.orientedRanges.pressure.fuzz = 0;
+        }
+
+        // Size factors.
+        if (mCalibration.sizeCalibration != Calibration::SIZE_CALIBRATION_NONE) {
+            mLocked.sizeScale = 0;
+            if (mCalibration.sizeCalibration == Calibration::SIZE_CALIBRATION_NORMALIZED) {
+                if (mRawAxes.toolMajor.valid && mRawAxes.toolMajor.maxValue != 0) {
+                    mLocked.sizeScale = 1.0f / mRawAxes.toolMajor.maxValue;
+                }
+            }
 
-        InputDeviceInfo::MotionRange area;
-        area.min = 0.0f;
-        area.max = diagonal;
-        area.flat = 0.0f;
-        area.fuzz = diagonalFuzz;
+            mLocked.orientedRanges.haveSize = true;
+            mLocked.orientedRanges.size.min = 0;
+            mLocked.orientedRanges.size.max = 1.0;
+            mLocked.orientedRanges.size.flat = 0;
+            mLocked.orientedRanges.size.fuzz = 0;
+        }
 
-        mLocked.orientedRanges.touchMajor = area;
-        mLocked.orientedRanges.touchMinor = area;
+        // Orientation
+        if (mCalibration.orientationCalibration != Calibration::ORIENTATION_CALIBRATION_NONE) {
+            mLocked.orientationScale = 0;
+            if (mCalibration.orientationCalibration
+                    == Calibration::ORIENTATION_CALIBRATION_INTERPOLATED) {
+                if (mRawAxes.orientation.valid && mRawAxes.orientation.maxValue != 0) {
+                    mLocked.orientationScale = float(M_PI_2) / mRawAxes.orientation.maxValue;
+                }
+            }
 
-        mLocked.orientedRanges.toolMajor = area;
-        mLocked.orientedRanges.toolMinor = area;
+            mLocked.orientedRanges.orientation.min = - M_PI_2;
+            mLocked.orientedRanges.orientation.max = M_PI_2;
+            mLocked.orientedRanges.orientation.flat = 0;
+            mLocked.orientedRanges.orientation.fuzz = 0;
+        }
     }
 
     if (orientationChanged || sizeChanged) {
@@ -1322,10 +1504,10 @@ bool TouchInputMapper::configureSurfaceLocked() {
 }
 
 void TouchInputMapper::configureVirtualKeysLocked() {
-    assert(mAxes.x.valid && mAxes.y.valid);
+    assert(mRawAxes.x.valid && mRawAxes.y.valid);
 
     // Note: getVirtualKeyDefinitions is non-reentrant so we can continue holding the lock.
-    Vector<InputReaderPolicyInterface::VirtualKeyDefinition> virtualKeyDefinitions;
+    Vector<VirtualKeyDefinition> virtualKeyDefinitions;
     getPolicy()->getVirtualKeyDefinitions(getDeviceName(), virtualKeyDefinitions);
 
     mLocked.virtualKeys.clear();
@@ -1336,13 +1518,13 @@ void TouchInputMapper::configureVirtualKeysLocked() {
 
     mLocked.virtualKeys.setCapacity(virtualKeyDefinitions.size());
 
-    int32_t touchScreenLeft = mAxes.x.minValue;
-    int32_t touchScreenTop = mAxes.y.minValue;
-    int32_t touchScreenWidth = mAxes.x.getRange();
-    int32_t touchScreenHeight = mAxes.y.getRange();
+    int32_t touchScreenLeft = mRawAxes.x.minValue;
+    int32_t touchScreenTop = mRawAxes.y.minValue;
+    int32_t touchScreenWidth = mRawAxes.x.getRange();
+    int32_t touchScreenHeight = mRawAxes.y.getRange();
 
     for (size_t i = 0; i < virtualKeyDefinitions.size(); i++) {
-        const InputReaderPolicyInterface::VirtualKeyDefinition& virtualKeyDefinition =
+        const VirtualKeyDefinition& virtualKeyDefinition =
                 virtualKeyDefinitions[i];
 
         mLocked.virtualKeys.add();
@@ -1353,7 +1535,8 @@ void TouchInputMapper::configureVirtualKeysLocked() {
         uint32_t flags;
         if (getEventHub()->scancodeToKeycode(getDeviceId(), virtualKey.scanCode,
                 & keyCode, & flags)) {
-            LOGW("  VirtualKey %d: could not obtain key code, ignoring", virtualKey.scanCode);
+            LOGW(INDENT "VirtualKey %d: could not obtain key code, ignoring",
+                    virtualKey.scanCode);
             mLocked.virtualKeys.pop(); // drop the key
             continue;
         }
@@ -1374,12 +1557,316 @@ void TouchInputMapper::configureVirtualKeysLocked() {
         virtualKey.hitBottom = (virtualKeyDefinition.centerY + halfHeight)
                 * touchScreenHeight / mLocked.surfaceHeight + touchScreenTop;
 
-        LOGI("  VirtualKey %d: keyCode=%d hitLeft=%d hitRight=%d hitTop=%d hitBottom=%d",
+        LOGI(INDENT "VirtualKey %d: keyCode=%d hitLeft=%d hitRight=%d hitTop=%d hitBottom=%d",
                 virtualKey.scanCode, virtualKey.keyCode,
                 virtualKey.hitLeft, virtualKey.hitRight, virtualKey.hitTop, virtualKey.hitBottom);
     }
 }
 
+void TouchInputMapper::parseCalibration() {
+    const InputDeviceCalibration& in = getDevice()->getCalibration();
+    Calibration& out = mCalibration;
+
+    // Touch Area
+    out.touchAreaCalibration = Calibration::TOUCH_AREA_CALIBRATION_DEFAULT;
+    String8 touchAreaCalibrationString;
+    if (in.tryGetProperty(String8("touch.touchArea.calibration"), touchAreaCalibrationString)) {
+        if (touchAreaCalibrationString == "none") {
+            out.touchAreaCalibration = Calibration::TOUCH_AREA_CALIBRATION_NONE;
+        } else if (touchAreaCalibrationString == "geometric") {
+            out.touchAreaCalibration = Calibration::TOUCH_AREA_CALIBRATION_GEOMETRIC;
+        } else if (touchAreaCalibrationString == "pressure") {
+            out.touchAreaCalibration = Calibration::TOUCH_AREA_CALIBRATION_PRESSURE;
+        } else if (touchAreaCalibrationString != "default") {
+            LOGW("Invalid value for touch.touchArea.calibration: '%s'",
+                    touchAreaCalibrationString.string());
+        }
+    }
+
+    // Tool Area
+    out.toolAreaCalibration = Calibration::TOOL_AREA_CALIBRATION_DEFAULT;
+    String8 toolAreaCalibrationString;
+    if (in.tryGetProperty(String8("tool.toolArea.calibration"), toolAreaCalibrationString)) {
+        if (toolAreaCalibrationString == "none") {
+            out.toolAreaCalibration = Calibration::TOOL_AREA_CALIBRATION_NONE;
+        } else if (toolAreaCalibrationString == "geometric") {
+            out.toolAreaCalibration = Calibration::TOOL_AREA_CALIBRATION_GEOMETRIC;
+        } else if (toolAreaCalibrationString == "linear") {
+            out.toolAreaCalibration = Calibration::TOOL_AREA_CALIBRATION_LINEAR;
+        } else if (toolAreaCalibrationString != "default") {
+            LOGW("Invalid value for tool.toolArea.calibration: '%s'",
+                    toolAreaCalibrationString.string());
+        }
+    }
+
+    out.haveToolAreaLinearScale = in.tryGetProperty(String8("touch.toolArea.linearScale"),
+            out.toolAreaLinearScale);
+    out.haveToolAreaLinearBias = in.tryGetProperty(String8("touch.toolArea.linearBias"),
+            out.toolAreaLinearBias);
+    out.haveToolAreaIsSummed = in.tryGetProperty(String8("touch.toolArea.isSummed"),
+            out.toolAreaIsSummed);
+
+    // Pressure
+    out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_DEFAULT;
+    String8 pressureCalibrationString;
+    if (in.tryGetProperty(String8("tool.pressure.calibration"), pressureCalibrationString)) {
+        if (pressureCalibrationString == "none") {
+            out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_NONE;
+        } else if (pressureCalibrationString == "physical") {
+            out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_PHYSICAL;
+        } else if (pressureCalibrationString == "amplitude") {
+            out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_AMPLITUDE;
+        } else if (pressureCalibrationString != "default") {
+            LOGW("Invalid value for tool.pressure.calibration: '%s'",
+                    pressureCalibrationString.string());
+        }
+    }
+
+    out.pressureSource = Calibration::PRESSURE_SOURCE_DEFAULT;
+    String8 pressureSourceString;
+    if (in.tryGetProperty(String8("touch.pressure.source"), pressureSourceString)) {
+        if (pressureSourceString == "pressure") {
+            out.pressureSource = Calibration::PRESSURE_SOURCE_PRESSURE;
+        } else if (pressureSourceString == "touch") {
+            out.pressureSource = Calibration::PRESSURE_SOURCE_TOUCH;
+        } else if (pressureSourceString != "default") {
+            LOGW("Invalid value for touch.pressure.source: '%s'",
+                    pressureSourceString.string());
+        }
+    }
+
+    out.havePressureScale = in.tryGetProperty(String8("touch.pressure.scale"),
+            out.pressureScale);
+
+    // Size
+    out.sizeCalibration = Calibration::SIZE_CALIBRATION_DEFAULT;
+    String8 sizeCalibrationString;
+    if (in.tryGetProperty(String8("tool.size.calibration"), sizeCalibrationString)) {
+        if (sizeCalibrationString == "none") {
+            out.sizeCalibration = Calibration::SIZE_CALIBRATION_NONE;
+        } else if (sizeCalibrationString == "normalized") {
+            out.sizeCalibration = Calibration::SIZE_CALIBRATION_NORMALIZED;
+        } else if (sizeCalibrationString != "default") {
+            LOGW("Invalid value for tool.size.calibration: '%s'",
+                    sizeCalibrationString.string());
+        }
+    }
+
+    // Orientation
+    out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_DEFAULT;
+    String8 orientationCalibrationString;
+    if (in.tryGetProperty(String8("tool.orientation.calibration"), orientationCalibrationString)) {
+        if (orientationCalibrationString == "none") {
+            out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_NONE;
+        } else if (orientationCalibrationString == "interpolated") {
+            out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_INTERPOLATED;
+        } else if (orientationCalibrationString != "default") {
+            LOGW("Invalid value for tool.orientation.calibration: '%s'",
+                    orientationCalibrationString.string());
+        }
+    }
+}
+
+void TouchInputMapper::resolveCalibration() {
+    // Pressure
+    switch (mCalibration.pressureSource) {
+    case Calibration::PRESSURE_SOURCE_DEFAULT:
+        if (mRawAxes.pressure.valid) {
+            mCalibration.pressureSource = Calibration::PRESSURE_SOURCE_PRESSURE;
+        } else if (mRawAxes.touchMajor.valid) {
+            mCalibration.pressureSource = Calibration::PRESSURE_SOURCE_TOUCH;
+        }
+        break;
+
+    case Calibration::PRESSURE_SOURCE_PRESSURE:
+        if (! mRawAxes.pressure.valid) {
+            LOGW("Calibration property touch.pressure.source is 'pressure' but "
+                    "the pressure axis is not available.");
+        }
+        break;
+
+    case Calibration::PRESSURE_SOURCE_TOUCH:
+        if (! mRawAxes.touchMajor.valid) {
+            LOGW("Calibration property touch.pressure.source is 'touch' but "
+                    "the touchMajor axis is not available.");
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    switch (mCalibration.pressureCalibration) {
+    case Calibration::PRESSURE_CALIBRATION_DEFAULT:
+        if (mCalibration.pressureSource != Calibration::PRESSURE_SOURCE_DEFAULT) {
+            mCalibration.pressureCalibration = Calibration::PRESSURE_CALIBRATION_AMPLITUDE;
+        } else {
+            mCalibration.pressureCalibration = Calibration::PRESSURE_CALIBRATION_NONE;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    // Tool Area
+    switch (mCalibration.toolAreaCalibration) {
+    case Calibration::TOOL_AREA_CALIBRATION_DEFAULT:
+        if (mRawAxes.toolMajor.valid) {
+            mCalibration.toolAreaCalibration = Calibration::TOOL_AREA_CALIBRATION_LINEAR;
+        } else {
+            mCalibration.toolAreaCalibration = Calibration::TOOL_AREA_CALIBRATION_NONE;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    // Touch Area
+    switch (mCalibration.touchAreaCalibration) {
+    case Calibration::TOUCH_AREA_CALIBRATION_DEFAULT:
+        if (mCalibration.pressureCalibration != Calibration::PRESSURE_CALIBRATION_NONE
+                && mCalibration.toolAreaCalibration != Calibration::TOOL_AREA_CALIBRATION_NONE) {
+            mCalibration.touchAreaCalibration = Calibration::TOUCH_AREA_CALIBRATION_PRESSURE;
+        } else {
+            mCalibration.touchAreaCalibration = Calibration::TOUCH_AREA_CALIBRATION_NONE;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    // Size
+    switch (mCalibration.sizeCalibration) {
+    case Calibration::SIZE_CALIBRATION_DEFAULT:
+        if (mRawAxes.toolMajor.valid) {
+            mCalibration.sizeCalibration = Calibration::SIZE_CALIBRATION_NORMALIZED;
+        } else {
+            mCalibration.sizeCalibration = Calibration::SIZE_CALIBRATION_NONE;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    // Orientation
+    switch (mCalibration.orientationCalibration) {
+    case Calibration::ORIENTATION_CALIBRATION_DEFAULT:
+        if (mRawAxes.orientation.valid) {
+            mCalibration.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_INTERPOLATED;
+        } else {
+            mCalibration.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_NONE;
+        }
+        break;
+
+    default:
+        break;
+    }
+}
+
+void TouchInputMapper::logCalibration() {
+    // Touch Area
+    switch (mCalibration.touchAreaCalibration) {
+    case Calibration::TOUCH_AREA_CALIBRATION_NONE:
+        LOGI(INDENT "  touch.touchArea.calibration: none");
+        break;
+    case Calibration::TOUCH_AREA_CALIBRATION_GEOMETRIC:
+        LOGI(INDENT "  touch.touchArea.calibration: geometric");
+        break;
+    case Calibration::TOUCH_AREA_CALIBRATION_PRESSURE:
+        LOGI(INDENT "  touch.touchArea.calibration: pressure");
+        break;
+    default:
+        assert(false);
+    }
+
+    // Tool Area
+    switch (mCalibration.toolAreaCalibration) {
+    case Calibration::TOOL_AREA_CALIBRATION_NONE:
+        LOGI(INDENT "  touch.toolArea.calibration: none");
+        break;
+    case Calibration::TOOL_AREA_CALIBRATION_GEOMETRIC:
+        LOGI(INDENT "  touch.toolArea.calibration: geometric");
+        break;
+    case Calibration::TOOL_AREA_CALIBRATION_LINEAR:
+        LOGI(INDENT "  touch.toolArea.calibration: linear");
+        break;
+    default:
+        assert(false);
+    }
+
+    if (mCalibration.haveToolAreaLinearScale) {
+        LOGI(INDENT "  touch.toolArea.linearScale: %f", mCalibration.toolAreaLinearScale);
+    }
+
+    if (mCalibration.haveToolAreaLinearBias) {
+        LOGI(INDENT "  touch.toolArea.linearBias: %f", mCalibration.toolAreaLinearBias);
+    }
+
+    if (mCalibration.haveToolAreaIsSummed) {
+        LOGI(INDENT "  touch.toolArea.isSummed: %d", mCalibration.toolAreaIsSummed);
+    }
+
+    // Pressure
+    switch (mCalibration.pressureCalibration) {
+    case Calibration::PRESSURE_CALIBRATION_NONE:
+        LOGI(INDENT "  touch.pressure.calibration: none");
+        break;
+    case Calibration::PRESSURE_CALIBRATION_PHYSICAL:
+        LOGI(INDENT "  touch.pressure.calibration: physical");
+        break;
+    case Calibration::PRESSURE_CALIBRATION_AMPLITUDE:
+        LOGI(INDENT "  touch.pressure.calibration: amplitude");
+        break;
+    default:
+        assert(false);
+    }
+
+    switch (mCalibration.pressureSource) {
+    case Calibration::PRESSURE_SOURCE_PRESSURE:
+        LOGI(INDENT "  touch.pressure.source: pressure");
+        break;
+    case Calibration::PRESSURE_SOURCE_TOUCH:
+        LOGI(INDENT "  touch.pressure.source: touch");
+        break;
+    case Calibration::PRESSURE_SOURCE_DEFAULT:
+        break;
+    default:
+        assert(false);
+    }
+
+    if (mCalibration.havePressureScale) {
+        LOGI(INDENT "  touch.pressure.scale: %f", mCalibration.pressureScale);
+    }
+
+    // Size
+    switch (mCalibration.sizeCalibration) {
+    case Calibration::SIZE_CALIBRATION_NONE:
+        LOGI(INDENT "  touch.size.calibration: none");
+        break;
+    case Calibration::SIZE_CALIBRATION_NORMALIZED:
+        LOGI(INDENT "  touch.size.calibration: normalized");
+        break;
+    default:
+        assert(false);
+    }
+
+    // Orientation
+    switch (mCalibration.orientationCalibration) {
+    case Calibration::ORIENTATION_CALIBRATION_NONE:
+        LOGI(INDENT "  touch.orientation.calibration: none");
+        break;
+    case Calibration::ORIENTATION_CALIBRATION_INTERPOLATED:
+        LOGI(INDENT "  touch.orientation.calibration: interpolated");
+        break;
+    default:
+        assert(false);
+    }
+}
+
 void TouchInputMapper::reset() {
     // Synthesize touch up event if touch is currently down.
     // This will also take care of finishing virtual key processing if needed.
@@ -1584,13 +2071,14 @@ void TouchInputMapper::dispatchTouches(nsecs_t when, uint32_t policyFlags) {
         // The dispatcher takes care of batching moves so we don't have to deal with that here.
         int32_t motionEventAction = AMOTION_EVENT_ACTION_MOVE;
         dispatchTouch(when, policyFlags, & mCurrentTouch,
-                currentIdBits, -1, motionEventAction);
+                currentIdBits, -1, currentPointerCount, motionEventAction);
     } else {
         // There may be pointers going up and pointers going down at the same time when pointer
         // ids are reported by the device driver.
         BitSet32 upIdBits(lastIdBits.value & ~ currentIdBits.value);
         BitSet32 downIdBits(currentIdBits.value & ~ lastIdBits.value);
         BitSet32 activeIdBits(lastIdBits.value);
+        uint32_t pointerCount = lastPointerCount;
 
         while (! upIdBits.isEmpty()) {
             uint32_t upId = upIdBits.firstMarkedBit();
@@ -1606,7 +2094,8 @@ void TouchInputMapper::dispatchTouches(nsecs_t when, uint32_t policyFlags) {
             }
 
             dispatchTouch(when, policyFlags, & mLastTouch,
-                    oldActiveIdBits, upId, motionEventAction);
+                    oldActiveIdBits, upId, pointerCount, motionEventAction);
+            pointerCount -= 1;
         }
 
         while (! downIdBits.isEmpty()) {
@@ -1623,16 +2112,16 @@ void TouchInputMapper::dispatchTouches(nsecs_t when, uint32_t policyFlags) {
                 motionEventAction = AMOTION_EVENT_ACTION_POINTER_DOWN;
             }
 
+            pointerCount += 1;
             dispatchTouch(when, policyFlags, & mCurrentTouch,
-                    activeIdBits, downId, motionEventAction);
+                    activeIdBits, downId, pointerCount, motionEventAction);
         }
     }
 }
 
 void TouchInputMapper::dispatchTouch(nsecs_t when, uint32_t policyFlags,
-        TouchData* touch, BitSet32 idBits, uint32_t changedId,
+        TouchData* touch, BitSet32 idBits, uint32_t changedId, uint32_t pointerCount,
         int32_t motionEventAction) {
-    uint32_t pointerCount = 0;
     int32_t pointerIds[MAX_POINTERS];
     PointerCoords pointerCoords[MAX_POINTERS];
     int32_t motionEventEdgeFlags = 0;
@@ -1643,36 +2132,130 @@ void TouchInputMapper::dispatchTouch(nsecs_t when, uint32_t policyFlags,
 
         // Walk through the the active pointers and map touch screen coordinates (TouchData) into
         // display coordinates (PointerCoords) and adjust for display orientation.
-        while (! idBits.isEmpty()) {
+        for (uint32_t outIndex = 0; ! idBits.isEmpty(); outIndex++) {
             uint32_t id = idBits.firstMarkedBit();
             idBits.clearBit(id);
-            uint32_t index = touch->idToIndex[id];
-
-            float x = float(touch->pointers[index].x - mLocked.xOrigin) * mLocked.xScale;
-            float y = float(touch->pointers[index].y - mLocked.yOrigin) * mLocked.yScale;
-            float pressure = float(touch->pointers[index].pressure - mLocked.pressureOrigin)
-                    * mLocked.pressureScale;
-            float size = float(touch->pointers[index].size - mLocked.sizeOrigin)
-                    * mLocked.sizeScale;
-
-            float orientation = float(touch->pointers[index].orientation)
-                    * mLocked.orientationScale;
-
-            float touchMajor, touchMinor, toolMajor, toolMinor;
-            if (abs(orientation) <= M_PI_4) {
-                // Nominally vertical orientation: scale major axis by Y, and scale minor axis by X.
-                touchMajor = float(touch->pointers[index].touchMajor) * mLocked.yScale;
-                touchMinor = float(touch->pointers[index].touchMinor) * mLocked.xScale;
-                toolMajor = float(touch->pointers[index].toolMajor) * mLocked.yScale;
-                toolMinor = float(touch->pointers[index].toolMinor) * mLocked.xScale;
-            } else {
-                // Nominally horizontal orientation: scale major axis by X, and scale minor axis by Y.
-                touchMajor = float(touch->pointers[index].touchMajor) * mLocked.xScale;
-                touchMinor = float(touch->pointers[index].touchMinor) * mLocked.yScale;
-                toolMajor = float(touch->pointers[index].toolMajor) * mLocked.xScale;
-                toolMinor = float(touch->pointers[index].toolMinor) * mLocked.yScale;
+            uint32_t inIndex = touch->idToIndex[id];
+
+            const PointerData& in = touch->pointers[inIndex];
+
+            // X and Y
+            float x = float(in.x - mLocked.xOrigin) * mLocked.xScale;
+            float y = float(in.y - mLocked.yOrigin) * mLocked.yScale;
+
+            // ToolMajor and ToolMinor
+            float toolMajor, toolMinor;
+            switch (mCalibration.toolAreaCalibration) {
+            case Calibration::TOOL_AREA_CALIBRATION_GEOMETRIC:
+                toolMajor = in.toolMajor * mLocked.geometricScale;
+                if (mRawAxes.toolMinor.valid) {
+                    toolMinor = in.toolMinor * mLocked.geometricScale;
+                } else {
+                    toolMinor = toolMajor;
+                }
+                break;
+            case Calibration::TOOL_AREA_CALIBRATION_LINEAR:
+                toolMajor = in.toolMajor != 0
+                        ? in.toolMajor * mLocked.toolAreaLinearScale + mLocked.toolAreaLinearBias
+                        : 0;
+                if (mRawAxes.toolMinor.valid) {
+                    toolMinor = in.toolMinor != 0
+                            ? in.toolMinor * mLocked.toolAreaLinearScale
+                                    + mLocked.toolAreaLinearBias
+                            : 0;
+                } else {
+                    toolMinor = toolMajor;
+                }
+                break;
+            default:
+                toolMajor = 0;
+                toolMinor = 0;
+                break;
+            }
+
+            if (mCalibration.haveToolAreaIsSummed && mCalibration.toolAreaIsSummed) {
+                toolMajor /= pointerCount;
+                toolMinor /= pointerCount;
+            }
+
+            // Pressure
+            float rawPressure;
+            switch (mCalibration.pressureSource) {
+            case Calibration::PRESSURE_SOURCE_PRESSURE:
+                rawPressure = in.pressure;
+                break;
+            case Calibration::PRESSURE_SOURCE_TOUCH:
+                rawPressure = in.touchMajor;
+                break;
+            default:
+                rawPressure = 0;
+            }
+
+            float pressure;
+            switch (mCalibration.pressureCalibration) {
+            case Calibration::PRESSURE_CALIBRATION_PHYSICAL:
+            case Calibration::PRESSURE_CALIBRATION_AMPLITUDE:
+                pressure = rawPressure * mLocked.pressureScale;
+                break;
+            default:
+                pressure = 1;
+                break;
+            }
+
+            // TouchMajor and TouchMinor
+            float touchMajor, touchMinor;
+            switch (mCalibration.touchAreaCalibration) {
+            case Calibration::TOUCH_AREA_CALIBRATION_GEOMETRIC:
+                touchMajor = in.touchMajor * mLocked.geometricScale;
+                if (mRawAxes.touchMinor.valid) {
+                    touchMinor = in.touchMinor * mLocked.geometricScale;
+                } else {
+                    touchMinor = touchMajor;
+                }
+                break;
+            case Calibration::TOUCH_AREA_CALIBRATION_PRESSURE:
+                touchMajor = toolMajor * pressure;
+                touchMinor = toolMinor * pressure;
+                break;
+            default:
+                touchMajor = 0;
+                touchMinor = 0;
+                break;
+            }
+
+            if (touchMajor > toolMajor) {
+                touchMajor = toolMajor;
+            }
+            if (touchMinor > toolMinor) {
+                touchMinor = toolMinor;
+            }
+
+            // Size
+            float size;
+            switch (mCalibration.sizeCalibration) {
+            case Calibration::SIZE_CALIBRATION_NORMALIZED: {
+                float rawSize = mRawAxes.toolMinor.valid
+                        ? avg(in.toolMajor, in.toolMinor)
+                        : in.toolMajor;
+                size = rawSize * mLocked.sizeScale;
+                break;
+            }
+            default:
+                size = 0;
+                break;
             }
 
+            // Orientation
+            float orientation;
+            switch (mCalibration.orientationCalibration) {
+            case Calibration::ORIENTATION_CALIBRATION_INTERPOLATED:
+                orientation = in.orientation * mLocked.orientationScale;
+                break;
+            default:
+                orientation = 0;
+            }
+
+            // Adjust coords for orientation.
             switch (mLocked.surfaceOrientation) {
             case InputReaderPolicyInterface::ROTATION_90: {
                 float xTemp = x;
@@ -1702,23 +2285,23 @@ void TouchInputMapper::dispatchTouch(nsecs_t when, uint32_t policyFlags,
             }
             }
 
-            pointerIds[pointerCount] = int32_t(id);
+            // Write output coords.
+            PointerCoords& out = pointerCoords[outIndex];
+            out.x = x;
+            out.y = y;
+            out.pressure = pressure;
+            out.size = size;
+            out.touchMajor = touchMajor;
+            out.touchMinor = touchMinor;
+            out.toolMajor = toolMajor;
+            out.toolMinor = toolMinor;
+            out.orientation = orientation;
 
-            pointerCoords[pointerCount].x = x;
-            pointerCoords[pointerCount].y = y;
-            pointerCoords[pointerCount].pressure = pressure;
-            pointerCoords[pointerCount].size = size;
-            pointerCoords[pointerCount].touchMajor = touchMajor;
-            pointerCoords[pointerCount].touchMinor = touchMinor;
-            pointerCoords[pointerCount].toolMajor = toolMajor;
-            pointerCoords[pointerCount].toolMinor = toolMinor;
-            pointerCoords[pointerCount].orientation = orientation;
+            pointerIds[outIndex] = int32_t(id);
 
             if (id == changedId) {
-                motionEventAction |= pointerCount << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
+                motionEventAction |= outIndex << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
             }
-
-            pointerCount += 1;
         }
 
         // Check edge flags by looking only at the first pointer since the flags are
@@ -1747,9 +2330,9 @@ void TouchInputMapper::dispatchTouch(nsecs_t when, uint32_t policyFlags,
 }
 
 bool TouchInputMapper::isPointInsideSurfaceLocked(int32_t x, int32_t y) {
-    if (mAxes.x.valid && mAxes.y.valid) {
-        return x >= mAxes.x.minValue && x <= mAxes.x.maxValue
-                && y >= mAxes.y.minValue && y <= mAxes.y.maxValue;
+    if (mRawAxes.x.valid && mRawAxes.y.valid) {
+        return x >= mRawAxes.x.minValue && x <= mRawAxes.x.maxValue
+                && y >= mRawAxes.y.minValue && y <= mRawAxes.y.maxValue;
     }
     return true;
 }
@@ -1960,7 +2543,7 @@ void TouchInputMapper::calculatePointerIds() {
  * then drop it. */
 bool TouchInputMapper::applyBadTouchFilter() {
     // This hack requires valid axis parameters.
-    if (! mAxes.y.valid) {
+    if (! mRawAxes.y.valid) {
         return false;
     }
 
@@ -1982,7 +2565,7 @@ bool TouchInputMapper::applyBadTouchFilter() {
     // the long size of the screen to be bad.  This was a magic value
     // determined by looking at the maximum distance it is feasible
     // to actually move in one sample.
-    int32_t maxDeltaY = mAxes.y.getRange() * 7 / 16;
+    int32_t maxDeltaY = mRawAxes.y.getRange() * 7 / 16;
 
     // XXX The original code in InputDevice.java included commented out
     //     code for testing the X axis.  Note that when we drop a point
@@ -2044,7 +2627,7 @@ bool TouchInputMapper::applyBadTouchFilter() {
  */
 bool TouchInputMapper::applyJumpyTouchFilter() {
     // This hack requires valid axis parameters.
-    if (! mAxes.y.valid) {
+    if (! mRawAxes.y.valid) {
         return false;
     }
 
@@ -2104,7 +2687,7 @@ bool TouchInputMapper::applyJumpyTouchFilter() {
     }
 
     if (mJumpyTouchFilter.jumpyPointsDropped < JUMPY_DROP_LIMIT) {
-        int jumpyEpsilon = mAxes.y.getRange() / JUMPY_EPSILON_DIVISOR;
+        int jumpyEpsilon = mRawAxes.y.getRange() / JUMPY_EPSILON_DIVISOR;
 
         // We only replace the single worst jumpy point as characterized by pointer distance
         // in a single axis.
@@ -2209,7 +2792,18 @@ void TouchInputMapper::applyAveragingTouchFilter() {
         uint32_t id = mCurrentTouch.pointers[currentIndex].id;
         int32_t x = mCurrentTouch.pointers[currentIndex].x;
         int32_t y = mCurrentTouch.pointers[currentIndex].y;
-        int32_t pressure = mCurrentTouch.pointers[currentIndex].pressure;
+        int32_t pressure;
+        switch (mCalibration.pressureSource) {
+        case Calibration::PRESSURE_SOURCE_PRESSURE:
+            pressure = mCurrentTouch.pointers[currentIndex].pressure;
+            break;
+        case Calibration::PRESSURE_SOURCE_TOUCH:
+            pressure = mCurrentTouch.pointers[currentIndex].touchMajor;
+            break;
+        default:
+            pressure = 1;
+            break;
+        }
 
         if (mLastTouch.idBits.hasBit(id)) {
             // Pointer was down before and is still down now.
@@ -2274,17 +2868,19 @@ void TouchInputMapper::applyAveragingTouchFilter() {
                     }
                 }
 
-                averagedX /= totalPressure;
-                averagedY /= totalPressure;
+                if (totalPressure != 0) {
+                    averagedX /= totalPressure;
+                    averagedY /= totalPressure;
 
 #if DEBUG_HACKS
-                LOGD("AveragingTouchFilter: Pointer id %d - "
-                        "totalPressure=%d, averagedX=%d, averagedY=%d", id, totalPressure,
-                        averagedX, averagedY);
+                    LOGD("AveragingTouchFilter: Pointer id %d - "
+                            "totalPressure=%d, averagedX=%d, averagedY=%d", id, totalPressure,
+                            averagedX, averagedY);
 #endif
 
-                mCurrentTouch.pointers[currentIndex].x = averagedX;
-                mCurrentTouch.pointers[currentIndex].y = averagedY;
+                    mCurrentTouch.pointers[currentIndex].x = averagedX;
+                    mCurrentTouch.pointers[currentIndex].y = averagedY;
+                }
             } else {
 #if DEBUG_HACKS
                 LOGD("AveragingTouchFilter: Pointer id %d - Exceeded max distance", id);
@@ -2382,8 +2978,8 @@ void SingleTouchInputMapper::initialize() {
     mDown = false;
     mX = 0;
     mY = 0;
-    mPressure = 1; // default to 1 for devices that don't report pressure
-    mSize = 0; // default to 0 for devices that don't report size
+    mPressure = 0; // default to 0 for devices that don't report pressure
+    mToolWidth = 0; // default to 0 for devices that don't report tool width
 }
 
 void SingleTouchInputMapper::reset() {
@@ -2460,7 +3056,7 @@ void SingleTouchInputMapper::sync(nsecs_t when) {
     }
 
     if (fields & Accumulator::FIELD_ABS_TOOL_WIDTH) {
-        mSize = mAccumulator.absToolWidth;
+        mToolWidth = mAccumulator.absToolWidth;
     }
 
     mCurrentTouch.clear();
@@ -2471,11 +3067,10 @@ void SingleTouchInputMapper::sync(nsecs_t when) {
         mCurrentTouch.pointers[0].x = mX;
         mCurrentTouch.pointers[0].y = mY;
         mCurrentTouch.pointers[0].pressure = mPressure;
-        mCurrentTouch.pointers[0].size = mSize;
-        mCurrentTouch.pointers[0].touchMajor = mSize;
-        mCurrentTouch.pointers[0].touchMinor = mSize;
-        mCurrentTouch.pointers[0].toolMajor = mSize;
-        mCurrentTouch.pointers[0].toolMinor = mSize;
+        mCurrentTouch.pointers[0].touchMajor = 0;
+        mCurrentTouch.pointers[0].touchMinor = 0;
+        mCurrentTouch.pointers[0].toolMajor = mToolWidth;
+        mCurrentTouch.pointers[0].toolMinor = mToolWidth;
         mCurrentTouch.pointers[0].orientation = 0;
         mCurrentTouch.idToIndex[0] = 0;
         mCurrentTouch.idBits.markBit(0);
@@ -2486,20 +3081,13 @@ void SingleTouchInputMapper::sync(nsecs_t when) {
     mAccumulator.clear();
 }
 
-void SingleTouchInputMapper::configureAxes() {
-    TouchInputMapper::configureAxes();
-
-    // The axes are aliased to take into account the manner in which they are presented
-    // as part of the TouchData during the sync.
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_X, & mAxes.x);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_Y, & mAxes.y);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_PRESSURE, & mAxes.pressure);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_TOOL_WIDTH, & mAxes.size);
+void SingleTouchInputMapper::configureRawAxes() {
+    TouchInputMapper::configureRawAxes();
 
-    mAxes.touchMajor = mAxes.size;
-    mAxes.touchMinor = mAxes.size;
-    mAxes.toolMajor = mAxes.size;
-    mAxes.toolMinor = mAxes.size;
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_X, & mRawAxes.x);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_Y, & mRawAxes.y);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_PRESSURE, & mRawAxes.pressure);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_TOOL_WIDTH, & mRawAxes.toolMajor);
 }
 
 
@@ -2562,6 +3150,10 @@ void MultiTouchInputMapper::process(const RawEvent* rawEvent) {
             pointer->fields |= Accumulator::FIELD_ABS_MT_TRACKING_ID;
             pointer->absMTTrackingId = rawEvent->value;
             break;
+        case ABS_MT_PRESSURE:
+            pointer->fields |= Accumulator::FIELD_ABS_MT_PRESSURE;
+            pointer->absMTPressure = rawEvent->value;
+            break;
         }
         break;
     }
@@ -2596,8 +3188,7 @@ void MultiTouchInputMapper::process(const RawEvent* rawEvent) {
 
 void MultiTouchInputMapper::sync(nsecs_t when) {
     static const uint32_t REQUIRED_FIELDS =
-            Accumulator::FIELD_ABS_MT_POSITION_X
-            | Accumulator::FIELD_ABS_MT_POSITION_Y;
+            Accumulator::FIELD_ABS_MT_POSITION_X | Accumulator::FIELD_ABS_MT_POSITION_Y;
 
     uint32_t inCount = mAccumulator.pointerCount;
     uint32_t outCount = 0;
@@ -2619,60 +3210,59 @@ void MultiTouchInputMapper::sync(nsecs_t when) {
         outPointer.x = inPointer.absMTPositionX;
         outPointer.y = inPointer.absMTPositionY;
 
+        if (fields & Accumulator::FIELD_ABS_MT_PRESSURE) {
+            if (inPointer.absMTPressure <= 0) {
+                // Some devices send sync packets with X / Y but with a 0 presure to indicate
+                // a pointer up.  Drop this finger.
+                continue;
+            }
+            outPointer.pressure = inPointer.absMTPressure;
+        } else {
+            // Default pressure to 0 if absent.
+            outPointer.pressure = 0;
+        }
+
         if (fields & Accumulator::FIELD_ABS_MT_TOUCH_MAJOR) {
-            int32_t value = inPointer.absMTTouchMajor;
-            if (value <= 0) {
+            if (inPointer.absMTTouchMajor <= 0) {
                 // Some devices send sync packets with X / Y but with a 0 touch major to indicate
-                // a pointer up.  Drop this finger.
+                // a pointer going up.  Drop this finger.
                 continue;
             }
             outPointer.touchMajor = inPointer.absMTTouchMajor;
         } else {
+            // Default touch area to 0 if absent.
             outPointer.touchMajor = 0;
         }
 
         if (fields & Accumulator::FIELD_ABS_MT_TOUCH_MINOR) {
             outPointer.touchMinor = inPointer.absMTTouchMinor;
         } else {
+            // Assume touch area is circular.
             outPointer.touchMinor = outPointer.touchMajor;
         }
 
         if (fields & Accumulator::FIELD_ABS_MT_WIDTH_MAJOR) {
             outPointer.toolMajor = inPointer.absMTWidthMajor;
         } else {
-            outPointer.toolMajor = outPointer.touchMajor;
+            // Default tool area to 0 if absent.
+            outPointer.toolMajor = 0;
         }
 
         if (fields & Accumulator::FIELD_ABS_MT_WIDTH_MINOR) {
             outPointer.toolMinor = inPointer.absMTWidthMinor;
         } else {
+            // Assume tool area is circular.
             outPointer.toolMinor = outPointer.toolMajor;
         }
 
         if (fields & Accumulator::FIELD_ABS_MT_ORIENTATION) {
             outPointer.orientation = inPointer.absMTOrientation;
         } else {
+            // Default orientation to vertical if absent.
             outPointer.orientation = 0;
         }
 
-        if (fields & Accumulator::FIELD_ABS_MT_PRESSURE) {
-            outPointer.pressure = inPointer.absMTPressure;
-        } else {
-            // Derive an approximation of pressure.
-            // FIXME Traditionally we have just passed a normalized value based on
-            //       ABS_MT_TOUCH_MAJOR as an estimate of pressure but the result is not
-            //       very meaningful, particularly on large displays.  We should probably let
-            //       pressure = touch_major / tool_major but it is unclear whether that will
-            //       break applications.
-            outPointer.pressure = outPointer.touchMajor;
-        }
-
-        // Size is an alias for a normalized tool width.
-        // FIXME Normalized tool width doesn't actually make much sense since it literally
-        //       means the approaching contact major axis is divided by its full range as
-        //       reported by the driver.  On a large display this could produce very small values.
-        outPointer.size = outPointer.toolMajor;
-
+        // Assign pointer id using tracking id if available.
         if (havePointerIds) {
             if (fields & Accumulator::FIELD_ABS_MT_TRACKING_ID) {
                 uint32_t id = uint32_t(inPointer.absMTTrackingId);
@@ -2705,33 +3295,17 @@ void MultiTouchInputMapper::sync(nsecs_t when) {
     mAccumulator.clear();
 }
 
-void MultiTouchInputMapper::configureAxes() {
-    TouchInputMapper::configureAxes();
-
-    // The axes are aliased to take into account the manner in which they are presented
-    // as part of the TouchData during the sync.
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_POSITION_X, & mAxes.x);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_POSITION_Y, & mAxes.y);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TOUCH_MAJOR, & mAxes.touchMajor);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TOUCH_MINOR, & mAxes.touchMinor);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_WIDTH_MAJOR, & mAxes.toolMajor);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_WIDTH_MINOR, & mAxes.toolMinor);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_ORIENTATION, & mAxes.orientation);
-    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_PRESSURE, & mAxes.pressure);
-
-    if (! mAxes.touchMinor.valid) {
-        mAxes.touchMinor = mAxes.touchMajor;
-    }
-
-    if (! mAxes.toolMinor.valid) {
-        mAxes.toolMinor = mAxes.toolMajor;
-    }
-
-    if (! mAxes.pressure.valid) {
-        mAxes.pressure = mAxes.touchMajor;
-    }
+void MultiTouchInputMapper::configureRawAxes() {
+    TouchInputMapper::configureRawAxes();
 
-    mAxes.size = mAxes.toolMajor;
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_POSITION_X, & mRawAxes.x);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_POSITION_Y, & mRawAxes.y);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TOUCH_MAJOR, & mRawAxes.touchMajor);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TOUCH_MINOR, & mRawAxes.touchMinor);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_WIDTH_MAJOR, & mRawAxes.toolMajor);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_WIDTH_MINOR, & mRawAxes.toolMinor);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_ORIENTATION, & mRawAxes.orientation);
+    getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_PRESSURE, & mRawAxes.pressure);
 }