Handle boolean for nnapi delegate (#3775)

To handle boolean for nnapi delegate, change type to quantized tensor and call NNAPI

Signed-off-by: Hyeongseok Oh <hseok82.oh@samsung.com>

diff --git a/libs/support/tflite/src/nnapi_delegate.cpp b/libs/support/tflite/src/nnapi_delegate.cpp
index 95157c1..f73871e 100644 (file)
--- a/libs/support/tflite/src/nnapi_delegate.cpp
+++ b/libs/support/tflite/src/nnapi_delegate.cpp
@@ -197,6 +197,13 @@ TfLiteStatus addTensorOperands(tflite::Interpreter* interpreter,
         scale = tensor->params.scale;
         zeroPoint = tensor->params.zero_point;
         break;
+      case kTfLiteBool:
+        // Workaround to pass bool type under NNAPI
+        // Use bool type using ANEURALNETWORKS_TENSOR_QUANT8_ASYMM with scale = 1.0f and zero_point = 0
+        nn_type = ANEURALNETWORKS_TENSOR_QUANT8_ASYMM;
+        scale = 1.0f;
+        zeroPoint = 0;
+        break;
       default:
         logError("Unsupported tensor type %d", tensor->type);
         return kTfLiteError;