diff --git a/services/oboeservice/AAudioServiceEndpointCapture.cpp b/services/oboeservice/AAudioServiceEndpointCapture.cpp
new file mode 100644
index 0000000..b7b42b4
--- /dev/null
+++ b/services/oboeservice/AAudioServiceEndpointCapture.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "AAudioService"
+//#define LOG_NDEBUG 0
+#include <utils/Log.h>
+
+#include <assert.h>
+#include <map>
+#include <mutex>
+#include <utils/Singleton.h>
+
+#include "AAudioEndpointManager.h"
+#include "AAudioServiceEndpoint.h"
+
+#include "core/AudioStreamBuilder.h"
+#include "AAudioServiceEndpoint.h"
+#include "AAudioServiceStreamShared.h"
+#include "AAudioServiceEndpointCapture.h"
+
+using namespace android;  // TODO just import names needed
+using namespace aaudio;   // TODO just import names needed
+
+AAudioServiceEndpointCapture::AAudioServiceEndpointCapture(AAudioService &audioService)
+        : mStreamInternalCapture(audioService, true) {
+}
+
+AAudioServiceEndpointCapture::~AAudioServiceEndpointCapture() {
+    delete mDistributionBuffer;
+}
+
+aaudio_result_t AAudioServiceEndpointCapture::open(int32_t deviceId) {
+    aaudio_result_t result = AAudioServiceEndpoint::open(deviceId);
+    if (result == AAUDIO_OK) {
+        delete mDistributionBuffer;
+        int distributionBufferSizeBytes = getStreamInternal()->getFramesPerBurst()
+                                          * getStreamInternal()->getBytesPerFrame();
+        mDistributionBuffer = new uint8_t[distributionBufferSizeBytes];
+    }
+    return result;
+}
+
+// Read data from the shared MMAP stream and then distribute it to the client streams.
+void *AAudioServiceEndpointCapture::callbackLoop() {
+    ALOGD("AAudioServiceEndpointCapture(): callbackLoop() entering");
+    int32_t underflowCount = 0;
+
+    aaudio_result_t result = getStreamInternal()->requestStart();
+
+    int64_t timeoutNanos = getStreamInternal()->calculateReasonableTimeout();
+
+    // result might be a frame count
+    while (mCallbackEnabled.load() && getStreamInternal()->isActive() && (result >= 0)) {
+        // Read audio data from stream using a blocking read.
+        result = getStreamInternal()->read(mDistributionBuffer, getFramesPerBurst(), timeoutNanos);
+        if (result == AAUDIO_ERROR_DISCONNECTED) {
+            disconnectRegisteredStreams();
+            break;
+        } else if (result != getFramesPerBurst()) {
+            ALOGW("AAudioServiceEndpointCapture(): callbackLoop() read %d / %d",
+                  result, getFramesPerBurst());
+            break;
+        }
+
+        // Distribute data to each active stream.
+        { // use lock guard
+            //ALOGD("AAudioServiceEndpointCapture(): try to lock()");
+            std::lock_guard <std::mutex> lock(mLockStreams);
+            //ALOGD("AAudioServiceEndpointCapture(): got lock()");
+            for (AAudioServiceStreamShared *sharedStream : mRunningStreams) {
+                FifoBuffer *fifo = sharedStream->getDataFifoBuffer();
+                if (fifo->getFifoControllerBase()->getEmptyFramesAvailable() <
+                    getFramesPerBurst()) {
+                    underflowCount++;
+                } else {
+                    fifo->write(mDistributionBuffer, getFramesPerBurst());
+                }
+                sharedStream->markTransferTime(AudioClock::getNanoseconds());
+            }
+        }
+    }
+
+    result = getStreamInternal()->requestStop();
+
+    ALOGD("AAudioServiceEndpointCapture(): callbackLoop() exiting, %d underflows", underflowCount);
+    return NULL; // TODO review
+}