MLECO-3183: Refactoring application sources

Platform agnostic application sources are moved into application
api module with their own independent CMake projects.

Changes for MLECO-3080 also included - they create CMake projects
individial API's (again, platform agnostic) that dependent on the
common logic. The API for KWS_API "joint" API has been removed and
now the use case relies on individual KWS, and ASR API libraries.

Change-Id: I1f7748dc767abb3904634a04e0991b74ac7b756d
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/source/application/api/use_case/kws/include/MicroNetKwsMfcc.hpp b/source/application/api/use_case/kws/include/MicroNetKwsMfcc.hpp
new file mode 100644
index 0000000..b2565a3
--- /dev/null
+++ b/source/application/api/use_case/kws/include/MicroNetKwsMfcc.hpp
@@ -0,0 +1,50 @@
+/*
+ * 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.
+ */
+#ifndef KWS_MICRONET_MFCC_HPP
+#define KWS_MICRONET_MFCC_HPP
+
+#include "Mfcc.hpp"
+
+namespace arm {
+namespace app {
+namespace audio {
+
+    /* Class to provide MicroNet specific MFCC calculation requirements. */
+    class MicroNetKwsMFCC : public MFCC {
+
+    public:
+        static constexpr uint32_t  ms_defaultSamplingFreq = 16000;
+        static constexpr uint32_t  ms_defaultNumFbankBins =    40;
+        static constexpr uint32_t  ms_defaultMelLoFreq    =    20;
+        static constexpr uint32_t  ms_defaultMelHiFreq    =  4000;
+        static constexpr bool      ms_defaultUseHtkMethod =  true;
+
+        explicit MicroNetKwsMFCC(const size_t numFeats, const size_t frameLen)
+            :  MFCC(MfccParams(
+                        ms_defaultSamplingFreq, ms_defaultNumFbankBins,
+                        ms_defaultMelLoFreq, ms_defaultMelHiFreq,
+                        numFeats, frameLen, ms_defaultUseHtkMethod))
+        {}
+        MicroNetKwsMFCC()  = delete;
+        ~MicroNetKwsMFCC() = default;
+    };
+
+} /* namespace audio */
+} /* namespace app */
+} /* namespace arm */
+
+#endif /* KWS_MICRONET_MFCC_HPP */
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