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, 0 insertions, 113 deletions

diff --git a/source/use_case/kws_asr/include/Wav2LetterMfcc.hpp b/source/use_case/kws_asr/include/Wav2LetterMfcc.hpp
deleted file mode 100644
index 75d75da..0000000
--- a/source/use_case/kws_asr/include/Wav2LetterMfcc.hpp
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * 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_ASR_WAV2LET_MFCC_HPP
-#define KWS_ASR_WAV2LET_MFCC_HPP
-
-#include "Mfcc.hpp"
-
-namespace arm {
-namespace app {
-namespace audio {
-
-    /* Class to provide Wav2Letter specific MFCC calculation requirements. */
-    class Wav2LetterMFCC : public MFCC {
-
-    public:
-        static constexpr uint32_t  ms_defaultSamplingFreq = 16000;
-        static constexpr uint32_t  ms_defaultNumFbankBins =   128;
-        static constexpr uint32_t  ms_defaultMelLoFreq    =     0;
-        static constexpr uint32_t  ms_defaultMelHiFreq    =  8000;
-        static constexpr bool      ms_defaultUseHtkMethod = false;
-
-        explicit Wav2LetterMFCC(const size_t numFeats, const size_t frameLen)
-            :  MFCC(MfccParams(
-                        ms_defaultSamplingFreq, ms_defaultNumFbankBins,
-                        ms_defaultMelLoFreq, ms_defaultMelHiFreq,
-                        numFeats, frameLen, ms_defaultUseHtkMethod))
-        {}
-
-        Wav2LetterMFCC()  = delete;
-        ~Wav2LetterMFCC() = default;
-
-    protected:
-
-        /**
-         * @brief       Overrides base class implementation of this function.
-         * @param[in]   fftVec                  Vector populated with FFT magnitudes.
-         * @param[in]   melFilterBank           2D Vector with filter bank weights.
-         * @param[in]   filterBankFilterFirst   Vector containing the first indices of filter bank
-         *                                      to be used for each bin.
-         * @param[in]   filterBankFilterLast    Vector containing the last indices of filter bank
-         *                                      to be used for each bin.
-         * @param[out]  melEnergies             Pre-allocated vector of MEL energies to be
-         *                                      populated.
-         * @return      true if successful, false otherwise.
-         */
-        bool ApplyMelFilterBank(
-                std::vector<float>&                 fftVec,
-                std::vector<std::vector<float>>&    melFilterBank,
-                std::vector<uint32_t>&              filterBankFilterFirst,
-                std::vector<uint32_t>&              filterBankFilterLast,
-                std::vector<float>&                 melEnergies) override;
-
-        /**
-         * @brief           Override for the base class implementation convert mel
-         *                  energies to logarithmic scale. The difference from
-         *                  default behaviour is that the power is converted to dB
-         *                  and subsequently clamped.
-         * @param[in,out]   melEnergies   1D vector of Mel energies.
-         **/
-        void ConvertToLogarithmicScale(
-                std::vector<float>& melEnergies) override;
-
-        /**
-         * @brief       Create a matrix used to calculate Discrete Cosine
-         *              Transform. Override for the base class' default
-         *              implementation as the first and last elements
-         *              use a different normaliser.
-         * @param[in]   inputLength        Input length of the buffer on which
-         *                                 DCT will be performed.
-         * @param[in]   coefficientCount   Total coefficients per input length.
-         * @return      1D vector with inputLength x coefficientCount elements
-         *              populated with DCT coefficients.
-         */
-        std::vector<float> CreateDCTMatrix(
-                int32_t inputLength,
-                int32_t coefficientCount) override;
-
-        /**
-         * @brief       Given the low and high Mel values, get the normaliser
-         *              for weights to be applied when populating the filter
-         *              bank. Override for the base class implementation.
-         * @param[in]   leftMel        Low Mel frequency value.
-         * @param[in]   rightMel       High Mel frequency value.
-         * @param[in]   useHTKMethod   Bool to signal if HTK method is to be
-         *                             used for calculation.
-         * @return      Value to use for normalising.
-         */
-        float GetMelFilterBankNormaliser(
-                const float&   leftMel,
-                const float&   rightMel,
-                bool     useHTKMethod) override;
-
-    };
-
-} /* namespace audio */
-} /* namespace app */
-} /* namespace arm */
-
-#endif /* KWS_ASR_WAV2LET_MFCC_HPP */