Frequency Domain implementation of Dynamics Processing Effect
Ported the frequency domain implementation of the effect from the
development sandbox.
Bug: 64161702
Bug: 38266419
Test: manual with Triton app. Cts tests. Listening tests.
Change-Id: I9417beba2f98f2a677f0857c7976bf76a0e0d8e0
diff --git a/media/libeffects/dynamicsproc/dsp/SHCircularBuffer.h b/media/libeffects/dynamicsproc/dsp/SHCircularBuffer.h
new file mode 100644
index 0000000..c139cd8
--- /dev/null
+++ b/media/libeffects/dynamicsproc/dsp/SHCircularBuffer.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * 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 SHCIRCULARBUFFER_H
+#define SHCIRCULARBUFFER_H
+
+#include <log/log.h>
+#include <vector>
+
+template <class T>
+class SHCircularBuffer {
+
+public:
+ SHCircularBuffer() : mReadIndex(0), mWriteIndex(0), mReadAvailable(0) {
+ }
+
+ explicit SHCircularBuffer(size_t maxSize) {
+ resize(maxSize);
+ }
+ void resize(size_t maxSize) {
+ mBuffer.resize(maxSize);
+ mReadIndex = 0;
+ mWriteIndex = 0;
+ mReadAvailable = 0;
+ }
+ inline void write(T value) {
+ if (availableToWrite()) {
+ mBuffer[mWriteIndex++] = value;
+ if (mWriteIndex >= getSize()) {
+ mWriteIndex = 0;
+ }
+ mReadAvailable++;
+ } else {
+ ALOGE("Error: SHCircularBuffer no space to write. allocated size %zu ", getSize());
+ }
+ }
+ inline T read() {
+ T value = T();
+ if (availableToRead()) {
+ value = mBuffer[mReadIndex++];
+ if (mReadIndex >= getSize()) {
+ mReadIndex = 0;
+ }
+ mReadAvailable--;
+ } else {
+ ALOGW("Warning: SHCircularBuffer no data available to read. Default value returned");
+ }
+ return value;
+ }
+ inline size_t availableToRead() const {
+ return mReadAvailable;
+ }
+ inline size_t availableToWrite() const {
+ return getSize() - mReadAvailable;
+ }
+ inline size_t getSize() const {
+ return mBuffer.size();
+ }
+
+private:
+ std::vector<T> mBuffer;
+ size_t mReadIndex;
+ size_t mWriteIndex;
+ size_t mReadAvailable;
+};
+
+
+#endif //SHCIRCULARBUFFER_H