diff -r 000000000000 -r 6474c204b198 content/media/omx/AudioSink.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/omx/AudioSink.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/*
+ * Copyright (c) 2014 The Linux Foundation. All rights reserved.
+ * Copyright (C) 2007 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.
+ */
+
+#ifndef AUDIO_SINK_H_
+#define AUDIO_SINK_H_
+
+#include <utils/Errors.h>
+#include <utils/String8.h>
+#include <system/audio.h>
+
+#define DEFAULT_AUDIOSINK_BUFFERCOUNT 4
+#define DEFAULT_AUDIOSINK_BUFFERSIZE 1200
+#define DEFAULT_AUDIOSINK_SAMPLERATE 44100
+
+// when the channel mask isn't known, use the channel count to derive a mask in
+// AudioSink::open()
+#define CHANNEL_MASK_USE_CHANNEL_ORDER 0
+
+namespace mozilla {
+
+/**
+ * AudioSink: abstraction layer for audio output
+ * Stripped version of Android KK MediaPlayerBase::AudioSink class
+ */
+
+class AudioSink : public android::RefBase
+{
+  typedef android::String8 String8;
+  typedef android::status_t status_t;
+
+public:
+  enum cb_event_t {
+    CB_EVENT_FILL_BUFFER,   // Request to write more data to buffer.
+    CB_EVENT_STREAM_END,    // Sent after all the buffers queued in AF and HW
+                            // are played back (after stop is called)
+    CB_EVENT_TEAR_DOWN      // The AudioTrack was invalidated due to usecase
+                            // change. Need to re-evaluate offloading options
+  };
+
+  // Callback returns the number of bytes actually written to the buffer.
+  typedef size_t (*AudioCallback)(AudioSink* aAudioSink,
+                                  void* aBuffer,
+                                  size_t aSize,
+                                  void* aCookie,
+                                  cb_event_t aEvent);
+  virtual ~AudioSink() {}
+  virtual ssize_t FrameSize() const = 0;
+  virtual status_t GetPosition(uint32_t* aPosition) const = 0;
+  virtual status_t SetVolume(float aVolume) const = 0;
+  virtual status_t SetParameters(const String8& aKeyValuePairs)
+  {
+    return android::NO_ERROR;
+  }
+
+  virtual status_t Open(uint32_t aSampleRate,
+                        int aChannelCount,
+                        audio_channel_mask_t aChannelMask,
+                        audio_format_t aFormat=AUDIO_FORMAT_PCM_16_BIT,
+                        AudioCallback aCb = nullptr,
+                        void* aCookie = nullptr,
+                        audio_output_flags_t aFlags = AUDIO_OUTPUT_FLAG_NONE,
+                        const audio_offload_info_t* aOffloadInfo = nullptr) = 0;
+
+  virtual status_t Start() = 0;
+  virtual void Stop() = 0;
+  virtual void Flush() = 0;
+  virtual void Pause() = 0;
+  virtual void Close() = 0;
+};
+
+} // namespace mozilla
+
+#endif // AUDIO_SINK_H_