1 files changed, 85 insertions, 0 deletions
diff --git a/apps/OboeTester/app/src/main/cpp/FormatConverterBox.cpp b/apps/OboeTester/app/src/main/cpp/FormatConverterBox.cpp
new file mode 100644
index 00000000..dd9f324f
--- /dev/null
+++ b/apps/OboeTester/app/src/main/cpp/FormatConverterBox.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2021 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 "FormatConverterBox.h"
+
+FormatConverterBox::FormatConverterBox(int32_t numSamples,
+                                       oboe::AudioFormat inputFormat,
+                                       oboe::AudioFormat outputFormat) {
+    mInputFormat = inputFormat;
+    mOutputFormat = outputFormat;
+
+    mInputBuffer = std::make_unique<uint8_t[]>(numSamples * sizeof(int32_t));
+    mOutputBuffer = std::make_unique<uint8_t[]>(numSamples * sizeof(int32_t));
+
+    mSource.reset();
+    switch (mInputFormat) {
+        case oboe::AudioFormat::I16:
+            mSource = std::make_unique<oboe::flowgraph::SourceI16>(1);
+            break;
+        case oboe::AudioFormat::I24:
+            mSource = std::make_unique<oboe::flowgraph::SourceI24>(1);
+            break;
+        case oboe::AudioFormat::I32:
+            mSource = std::make_unique<oboe::flowgraph::SourceI32>(1);
+            break;
+        case oboe::AudioFormat::Float:
+        case oboe::AudioFormat::Invalid:
+        case oboe::AudioFormat::Unspecified:
+            mSource = std::make_unique<oboe::flowgraph::SourceFloat>(1);
+            break;
+    }
+
+    mSink.reset();
+    switch (mOutputFormat) {
+        case oboe::AudioFormat::I16:
+            mSink = std::make_unique<oboe::flowgraph::SinkI16>(1);
+            break;
+        case oboe::AudioFormat::I24:
+            mSink = std::make_unique<oboe::flowgraph::SinkI24>(1);
+            break;
+        case oboe::AudioFormat::I32:
+            mSink = std::make_unique<oboe::flowgraph::SinkI32>(1);
+            break;
+        case oboe::AudioFormat::Float:
+        case oboe::AudioFormat::Invalid:
+        case oboe::AudioFormat::Unspecified:
+            mSink = std::make_unique<oboe::flowgraph::SinkFloat>(1);
+            break;
+    }
+
+    if (mSource && mSink) {
+        mSource->output.connect(&mSink->input);
+        mSink->pullReset();
+    }
+}
+
+int32_t FormatConverterBox::convertInternalBuffers(int32_t numSamples) {
+    return convert(getOutputBuffer(), numSamples, getInputBuffer());
+}
+
+int32_t FormatConverterBox::convertToInternalOutput(int32_t numSamples, const void *inputBuffer) {
+    return convert(getOutputBuffer(), numSamples, inputBuffer);
+}
+
+int32_t FormatConverterBox::convertFromInternalInput(void *outputBuffer, int32_t numSamples) {
+    return convert(outputBuffer, numSamples, getInputBuffer());
+}
+
+int32_t FormatConverterBox::convert(void *outputBuffer, int32_t numSamples, const void *inputBuffer) {
+    mSource->setData(inputBuffer, numSamples);
+    return mSink->read(outputBuffer, numSamples);
+}