Move dead submodules in-tree

Signed-off-by: swurl <swurl@swurl.xyz>

1 files changed, 72 insertions, 0 deletions

diff --git a/externals/oboe/src/flowgraph/SampleRateConverter.cpp b/externals/oboe/src/flowgraph/SampleRateConverter.cpp
new file mode 100644
index 0000000000..890057db07
--- /dev/null
+++ b/externals/oboe/src/flowgraph/SampleRateConverter.cpp
@@ -0,0 +1,72 @@
+/*
+ * 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 "SampleRateConverter.h"
+
+using namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph;
+using namespace RESAMPLER_OUTER_NAMESPACE::resampler;
+
+SampleRateConverter::SampleRateConverter(int32_t channelCount,
+                                         MultiChannelResampler &resampler)
+        : FlowGraphFilter(channelCount)
+        , mResampler(resampler) {
+    setDataPulledAutomatically(false);
+}
+
+void SampleRateConverter::reset() {
+    FlowGraphNode::reset();
+    mInputCallCount = kInitialCallCount;
+    mInputCursor = 0;
+}
+
+// Return true if there is a sample available.
+bool SampleRateConverter::isInputAvailable() {
+    // If we have consumed all of the input data then go out and get some more.
+    if (mInputCursor >= mNumValidInputFrames) {
+        mInputCallCount++;
+        mNumValidInputFrames = input.pullData(mInputCallCount, input.getFramesPerBuffer());
+        mInputCursor = 0;
+    }
+    return (mInputCursor < mNumValidInputFrames);
+}
+
+const float *SampleRateConverter::getNextInputFrame() {
+    const float *inputBuffer = input.getBuffer();
+    return &inputBuffer[mInputCursor++ * input.getSamplesPerFrame()];
+}
+
+int32_t SampleRateConverter::onProcess(int32_t numFrames) {
+    float *outputBuffer = output.getBuffer();
+    int32_t channelCount = output.getSamplesPerFrame();
+    int framesLeft = numFrames;
+    while (framesLeft > 0) {
+        // Gather input samples as needed.
+        if(mResampler.isWriteNeeded()) {
+            if (isInputAvailable()) {
+                const float *frame = getNextInputFrame();
+                mResampler.writeNextFrame(frame);
+            } else {
+                break;
+            }
+        } else {
+            // Output frame is interpolated from input samples.
+            mResampler.readNextFrame(outputBuffer);
+            outputBuffer += channelCount;
+            framesLeft--;
+        }
+    }
+    return numFrames - framesLeft;
+}