MLECO-2082: Adding visual wake word use case21.08

MLECO-2083: Refactoring img_class and visual wake word

*Added source files for visual wake word
*Added tests
*Added docs
*Added new images for visual wake word demo
*Refactored common functions in img_class, visual wake word and other usecases

Change-Id: Ibd25854e19a5517f940a8d3086a5d4835fab89e9
Signed-off-by: Éanna Ó Catháin <eanna.ocathain@arm.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/source/use_case/vww/src/VisualWakeWordModel.cc b/source/use_case/vww/src/VisualWakeWordModel.cc
new file mode 100644
index 0000000..3067c7a
--- /dev/null
+++ b/source/use_case/vww/src/VisualWakeWordModel.cc
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "VisualWakeWordModel.hpp"
+
+#include "hal.h"
+
+const tflite::MicroOpResolver& arm::app::VisualWakeWordModel::GetOpResolver()
+{
+    return this->m_opResolver;
+}
+
+bool arm::app::VisualWakeWordModel::EnlistOperations()
+{
+    this->m_opResolver.AddDepthwiseConv2D();
+    this->m_opResolver.AddConv2D();
+    this->m_opResolver.AddAveragePool2D();
+    this->m_opResolver.AddReshape();
+    this->m_opResolver.AddPad();
+    this->m_opResolver.AddAdd();
+
+#if defined(ARM_NPU)
+    if (kTfLiteOk == this->m_opResolver.AddEthosU()) {
+        info("Added %s support to op resolver\n",
+            tflite::GetString_ETHOSU());
+    } else {
+        printf_err("Failed to add Arm NPU support to op resolver.");
+        return false;
+    }
+#endif /* ARM_NPU */
+    return true;
+}
+
+extern uint8_t* GetModelPointer();
+const uint8_t* arm::app::VisualWakeWordModel::ModelPointer()
+{
+    return GetModelPointer();
+}
+
+extern size_t GetModelLen();
+size_t arm::app::VisualWakeWordModel::ModelSize()
+{
+    return GetModelLen();
+}
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