diff --git a/libs/audioflinger/AudioDumpInterface.cpp b/libs/audioflinger/AudioDumpInterface.cpp
new file mode 100644
index 0000000..b4940cb
--- /dev/null
+++ b/libs/audioflinger/AudioDumpInterface.cpp
@@ -0,0 +1,117 @@
+/* //device/servers/AudioFlinger/AudioDumpInterface.cpp
+**
+** Copyright 2008, 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 "AudioFlingerDump"
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <utils/Log.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "AudioDumpInterface.h"
+
+namespace android {
+
+bool gFirst = true;       // true if first write after a standby
+
+// ----------------------------------------------------------------------------
+
+AudioDumpInterface::AudioDumpInterface(AudioHardwareInterface* hw)
+{
+    if(hw == 0) {
+        LOGE("Dump construct hw = 0");
+    }
+    mFinalInterface = hw;
+    mStreamOut = 0;
+}
+
+
+AudioDumpInterface::~AudioDumpInterface()
+{
+    if(mFinalInterface) delete mFinalInterface;
+    if(mStreamOut) delete mStreamOut;
+}
+
+
+AudioStreamOut* AudioDumpInterface::openOutputStream(
+        int format, int channelCount, uint32_t sampleRate, status_t *status)
+{
+    AudioStreamOut* outFinal = mFinalInterface->openOutputStream(format, channelCount, sampleRate, status);
+
+    if(outFinal) {
+        mStreamOut =  new AudioStreamOutDump(outFinal);
+        return mStreamOut;
+    } else {
+        LOGE("Dump outFinal=0");
+        return 0;
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+AudioStreamOutDump::AudioStreamOutDump( AudioStreamOut* finalStream)
+{
+    mFinalStream = finalStream;
+    mOutFile = 0;
+}
+
+
+AudioStreamOutDump::~AudioStreamOutDump()
+{
+    Close();
+    delete mFinalStream;
+}
+
+ssize_t AudioStreamOutDump::write(const void* buffer, size_t bytes)
+{
+    ssize_t ret;
+
+    ret = mFinalStream->write(buffer, bytes);
+    if(!mOutFile && gFirst) {
+        gFirst = false;
+        // check if dump file exist
+        mOutFile = fopen(FLINGER_DUMP_NAME, "r");
+        if(mOutFile) {
+            fclose(mOutFile);
+            mOutFile = fopen(FLINGER_DUMP_NAME, "ab");
+        }
+    }
+    if (mOutFile) {
+        fwrite(buffer, bytes, 1, mOutFile);
+    }
+    return ret;
+}
+
+status_t AudioStreamOutDump::standby()
+{
+    Close();
+    gFirst = true;
+    return mFinalStream->standby();
+}
+
+
+void AudioStreamOutDump::Close(void)
+{
+    if(mOutFile) {
+        fclose(mOutFile);
+        mOutFile = 0;
+    }
+}
+
+}; // namespace android