Make InputReader logs available dynamically

This will allow InputReader to turn on logs without having to rebuild
and make it easier to debug.

This CL also moved DEBUG_LIGHT_DETAILS from PeripheralController and DEBUG_FOCUS from FocusResolver.

Bug: 211915757
Test: adb shell setprop log.tag.InputReaderRawEvents DEBUG
Test: check that the logs get enabled
Change-Id: Icf9ea0a797cfc5974ebac51ca71b3c20337536c5
diff --git a/services/inputflinger/dispatcher/FocusResolver.cpp b/services/inputflinger/dispatcher/FocusResolver.cpp
index a02b3e8..4da846b 100644
--- a/services/inputflinger/dispatcher/FocusResolver.cpp
+++ b/services/inputflinger/dispatcher/FocusResolver.cpp
@@ -13,24 +13,20 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-#define LOG_TAG "FocusResolver"
+#define LOG_TAG "InputDispatcher"
 #define ATRACE_TAG ATRACE_TAG_INPUT
 
 #define INDENT "  "
 #define INDENT2 "    "
 
-// Log debug messages about input focus tracking.
-static constexpr bool DEBUG_FOCUS = false;
-
 #include <inttypes.h>
 
 #include <android-base/stringprintf.h>
 #include <binder/Binder.h>
 #include <ftl/enum.h>
 #include <gui/WindowInfo.h>
-#include <log/log.h>
 
+#include "DebugConfig.h"
 #include "FocusResolver.h"
 
 using android::gui::FocusRequest;
diff --git a/services/inputflinger/reader/Macros.h b/services/inputflinger/reader/Macros.h
index d837689..1bbf386 100644
--- a/services/inputflinger/reader/Macros.h
+++ b/services/inputflinger/reader/Macros.h
@@ -20,27 +20,65 @@
 #define LOG_TAG "InputReader"
 
 //#define LOG_NDEBUG 0
+#include <log/log.h>
+#include <log/log_event_list.h>
 
-// Log debug messages for each raw event received from the EventHub.
-static constexpr bool DEBUG_RAW_EVENTS = false;
+namespace android {
+/**
+ * Log debug messages for each raw event received from the EventHub.
+ * Enable this via "adb shell setprop log.tag.InputReaderRawEvents DEBUG" (requires restart)
+ */
+const bool DEBUG_RAW_EVENTS =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "RawEvents", ANDROID_LOG_INFO);
 
-// Log debug messages about virtual key processing.
-static constexpr bool DEBUG_VIRTUAL_KEYS = false;
+/**
+ * Log debug messages about virtual key processing.
+ * Enable this via "adb shell setprop log.tag.InputReaderVirtualKeys DEBUG" (requires restart)
+ */
+const bool DEBUG_VIRTUAL_KEYS =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "VirtualKeys", ANDROID_LOG_INFO);
 
-// Log debug messages about pointers.
-static constexpr bool DEBUG_POINTERS = false;
+/**
+ * Log debug messages about pointers.
+ * Enable this via "adb shell setprop log.tag.InputReaderPointers DEBUG" (requires restart)
+ */
+const bool DEBUG_POINTERS =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Pointers", ANDROID_LOG_INFO);
 
-// Log debug messages about pointer assignment calculations.
-static constexpr bool DEBUG_POINTER_ASSIGNMENT = false;
+/**
+ * Log debug messages about pointer assignment calculations.
+ * Enable this via "adb shell setprop log.tag.InputReaderPointerAssignment DEBUG" (requires restart)
+ */
+const bool DEBUG_POINTER_ASSIGNMENT =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "PointerAssignment", ANDROID_LOG_INFO);
+/**
+ * Log debug messages about gesture detection.
+ * Enable this via "adb shell setprop log.tag.InputReaderGestures DEBUG" (requires restart)
+ */
+const bool DEBUG_GESTURES =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Gestures", ANDROID_LOG_INFO);
 
-// Log debug messages about gesture detection.
-static constexpr bool DEBUG_GESTURES = false;
+/**
+ * Log debug messages about the vibrator.
+ * Enable this via "adb shell setprop log.tag.InputReaderVibrator DEBUG" (requires restart)
+ */
+const bool DEBUG_VIBRATOR =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Vibrator", ANDROID_LOG_INFO);
 
-// Log debug messages about the vibrator.
-static constexpr bool DEBUG_VIBRATOR = false;
+/**
+ * Log debug messages about fusing stylus data.
+ * Enable this via "adb shell setprop log.tag.InputReaderStylusFusion DEBUG" (requires restart)
+ */
+const bool DEBUG_STYLUS_FUSION =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "StylusFusion", ANDROID_LOG_INFO);
 
-// Log debug messages about fusing stylus data.
-static constexpr bool DEBUG_STYLUS_FUSION = false;
+/**
+ * Log detailed debug messages about input device lights.
+ * Enable this via "adb shell setprop log.tag.InputReaderLightDetails DEBUG" (requires restart)
+ */
+const bool DEBUG_LIGHT_DETAILS =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "LightDetails", ANDROID_LOG_INFO);
+} // namespace android
 
 #define INDENT "  "
 #define INDENT2 "    "
diff --git a/services/inputflinger/reader/controller/PeripheralController.cpp b/services/inputflinger/reader/controller/PeripheralController.cpp
index a693496..7673174 100644
--- a/services/inputflinger/reader/controller/PeripheralController.cpp
+++ b/services/inputflinger/reader/controller/PeripheralController.cpp
@@ -22,9 +22,6 @@
 #include "../Macros.h"
 #include "PeripheralController.h"
 
-// Log detailed debug messages about input device lights.
-static constexpr bool DEBUG_LIGHT_DETAILS = false;
-
 namespace android {
 
 static inline int32_t getAlpha(int32_t color) {