Initialize mAffineTransform and update on modification

This patch causes the InputReader to update its mAffineTransform to reflect
the currently-set calibration on startup and whenever its value is changed
through the InputManagerService.

Change-Id: I4719122a28afa9833772040f0433780a84240b9d

1 files changed, 9 insertions, 0 deletions

diff --git a/services/inputflinger/InputReader.h b/services/inputflinger/InputReader.h
index 5c72c71..0e57bcd 100644
--- a/services/inputflinger/InputReader.h
+++ b/services/inputflinger/InputReader.h
@@ -138,6 +138,9 @@ struct InputReaderConfiguration {
         // The device name alias supplied by the may have changed for some devices.
         CHANGE_DEVICE_ALIAS = 1 << 5,
 
+        // The location calibration matrix changed.
+        TOUCH_AFFINE_TRANSFORMATION = 1 << 6,
+
         // All devices must be reopened.
         CHANGE_MUST_REOPEN = 1 << 31,
     };
@@ -304,6 +307,10 @@ public:
 
     /* Gets a user-supplied alias for a particular input device, or an empty string if none. */
     virtual String8 getDeviceAlias(const InputDeviceIdentifier& identifier) = 0;
+
+    /* Gets the affine calibration associated with the specified device. */
+    virtual TouchAffineTransformation getTouchAffineTransformation(
+            const String8& inputDeviceDescriptor) = 0;
 };
 
 
@@ -535,6 +542,7 @@ public:
     inline int32_t getControllerNumber() const { return mControllerNumber; }
     inline int32_t getGeneration() const { return mGeneration; }
     inline const String8& getName() const { return mIdentifier.name; }
+    inline const String8& getDescriptor() { return mIdentifier.descriptor; }
     inline uint32_t getClasses() const { return mClasses; }
     inline uint32_t getSources() const { return mSources; }
 
@@ -1366,6 +1374,7 @@ protected:
     virtual void dumpCalibration(String8& dump);
     virtual void dumpAffineTransformation(String8& dump);
     virtual bool hasStylus() const = 0;
+    virtual void updateAffineTransformation();
 
     virtual void syncTouch(nsecs_t when, bool* outHavePointerIds) = 0;