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-rw-r--r--libs/ui/InputTransport.cpp8
1 files changed, 7 insertions, 1 deletions
diff --git a/libs/ui/InputTransport.cpp b/libs/ui/InputTransport.cpp
index 9d1b8b9..93d0d1f 100644
--- a/libs/ui/InputTransport.cpp
+++ b/libs/ui/InputTransport.cpp
@@ -27,8 +27,14 @@
namespace android {
+#define ROUND_UP(value, boundary) (((value) + (boundary) - 1) & ~((boundary) - 1))
+#define MIN_HISTORY_DEPTH 20
+
// Must be at least sizeof(InputMessage) + sufficient space for pointer data
-static const int DEFAULT_MESSAGE_BUFFER_SIZE = 16384;
+static const int DEFAULT_MESSAGE_BUFFER_SIZE = ROUND_UP(
+ sizeof(InputMessage) + MIN_HISTORY_DEPTH
+ * (sizeof(InputMessage::SampleData) + MAX_POINTERS * sizeof(PointerCoords)),
+ 4096);
// Signal sent by the producer to the consumer to inform it that a new message is
// available to be consumed in the shared memory buffer.