MLECO-4260: Replace raw C++ pointers with smart variants

Model:
Added std::unique_ptr qualifier to Model.cc member and
used make_unique when creating interpreter object
Removed custom destructor and un-necessary memory cleanup following
failed allocation

DataStructures:
Refactored array 2d to use a std::vector under the hood.
This should preserve desired attributes including contiguous
memory while removing the need for custom destructor.
Original size function renamed to dimSize to avoid confusion with
vector.size()
Accompanying changes made to preprocessing and ASR tests.

AppContext:
Replaced use of raw pointers in AppContext.hpp.
Previously a std::map including IAttribute pointers required
individual deallocation as they were allocated using new.

Signed-off-by: Liam Barry <liam.barry@arm.com>
Change-Id: I1a34dce5dea6ecf4883a9ada3a20f827eb6e6d6b

1 files changed, 8 insertions, 8 deletions

diff --git a/source/application/api/use_case/asr/src/Wav2LetterPreprocess.cc b/source/application/api/use_case/asr/src/Wav2LetterPreprocess.cc
index 99e769c..1794894 100644
--- a/source/application/api/use_case/asr/src/Wav2LetterPreprocess.cc
+++ b/source/application/api/use_case/asr/src/Wav2LetterPreprocess.cc
@@ -1,6 +1,6 @@
 /*
- * SPDX-FileCopyrightText: Copyright 2021-2022 Arm Limited and/or its affiliates <open-source-office@arm.com>
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-FileCopyrightText: Copyright 2021-2023 Arm Limited and/or its affiliates
+ * <open-source-office@arm.com> 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.
@@ -63,7 +63,7 @@ namespace app {
                                         mfccWindow,
                                         mfccWindow + this->m_mfccWindowLen);
             auto mfcc = this->m_mfcc.MfccCompute(mfccAudioData);
-            for (size_t i = 0; i < this->m_mfccBuf.size(0); ++i) {
+            for (size_t i = 0; i < this->m_mfccBuf.dimSize(0); ++i) {
                 this->m_mfccBuf(i, mfccBufIdx) = mfcc[i];
             }
             ++mfccBufIdx;
@@ -126,16 +126,16 @@ namespace app {
             -0.03679654,     -0.04329004,     -0.03679654,
             -0.01731602,      0.01515152,      0.06060606};
 
-        if (delta1.size(0) == 0 || delta2.size(0) != delta1.size(0) ||
-            mfcc.size(0) == 0 || mfcc.size(1) == 0) {
+        if (delta1.dimSize(0) == 0 || delta2.dimSize(0) != delta1.dimSize(0) ||
+            mfcc.dimSize(0) == 0 || mfcc.dimSize(1) == 0) {
             return false;
         }
 
         /* Get the middle index; coeff vec len should always be odd. */
         const size_t coeffLen = delta1Coeffs.size();
         const size_t fMidIdx = (coeffLen - 1)/2;
-        const size_t numFeatures = mfcc.size(0);
-        const size_t numFeatVectors = mfcc.size(1);
+        const size_t numFeatures    = mfcc.dimSize(0);
+        const size_t numFeatVectors = mfcc.dimSize(1);
 
         /* Iterate through features in MFCC vector. */
         for (size_t i = 0; i < numFeatures; ++i) {
@@ -169,7 +169,7 @@ namespace app {
 
     void AsrPreProcess::StandardizeVecF32(Array2d<float>& vec)
     {
-        auto mean = math::MathUtils::MeanF32(vec.begin(), vec.totalSize());
+        auto mean   = math::MathUtils::MeanF32(vec.begin(), vec.totalSize());
         auto stddev = math::MathUtils::StdDevF32(vec.begin(), vec.totalSize(), mean);
 
         debug("Mean: %f, Stddev: %f\n", mean, stddev);