From 6c655321e6b04b8648802e296bb5ca11d290ae68 Mon Sep 17 00:00:00 2001 From: swurl Date: Sat, 31 May 2025 02:33:02 -0400 Subject: Move dead submodules in-tree Signed-off-by: swurl --- .../app/src/main/cpp/InterpolatingDelayLine.cpp | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 externals/oboe/apps/OboeTester/app/src/main/cpp/InterpolatingDelayLine.cpp (limited to 'externals/oboe/apps/OboeTester/app/src/main/cpp/InterpolatingDelayLine.cpp') diff --git a/externals/oboe/apps/OboeTester/app/src/main/cpp/InterpolatingDelayLine.cpp b/externals/oboe/apps/OboeTester/app/src/main/cpp/InterpolatingDelayLine.cpp new file mode 100644 index 0000000000..f5393c57bd --- /dev/null +++ b/externals/oboe/apps/OboeTester/app/src/main/cpp/InterpolatingDelayLine.cpp @@ -0,0 +1,43 @@ +/* + * Copyright 2019 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. + */ + +#include + +#include "InterpolatingDelayLine.h" + +InterpolatingDelayLine::InterpolatingDelayLine(int32_t delaySize) { + mDelaySize = delaySize; + mDelayLine = std::make_unique(delaySize); +} + +float InterpolatingDelayLine::process(float delay, float input) { + float *writeAddress = mDelayLine.get() + mCursor; + *writeAddress = input; + mDelayLine.get()[mCursor] = input; + int32_t delayInt = std::min(mDelaySize - 1, (int32_t) delay); + int32_t readIndex = mCursor - delayInt; + if (readIndex < 0) { + readIndex += mDelaySize; + } + // TODO interpolate + float *readAddress = mDelayLine.get() + readIndex; + float output = *readAddress; + mCursor++; + if (mCursor >= mDelaySize) { + mCursor = 0; + } + return output; +}; -- cgit v1.2.3