// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// 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.

#if defined(COBALT_MEDIA_SOURCE_2016)
#include "cobalt/dom/media_source/source_buffer.h"
#define COBALT_DOM_SOURCE_BUFFER_H_
#endif  // defined(COBALT_MEDIA_SOURCE_2016)

#ifndef COBALT_DOM_SOURCE_BUFFER_H_
#define COBALT_DOM_SOURCE_BUFFER_H_

#include <string>

#include "base/memory/ref_counted.h"
#include "cobalt/dom/event_target.h"
#include "cobalt/dom/time_ranges.h"
#include "cobalt/script/exception_state.h"
#include "cobalt/script/typed_arrays.h"
#include "cobalt/script/wrappable.h"

namespace cobalt {
namespace dom {

class MediaSource;

// The SourceBuffer interface exposes the media source buffer so its user can
// append media data to.
//   https://rawgit.com/w3c/media-source/6747ed7a3206f646963d760100b0f37e2fc7e47e/media-source.html#sourcebuffer
// Note that SourceBuffer is not inherited from EventTarget in MSE 2012 but we
// make it inherit from EventTarget to be in sync with the binding, which is
// shared between different versions of MSE.
class SourceBuffer : public dom::EventTarget {
 public:
  // Custom, not in any spec.
  //
  SourceBuffer(const scoped_refptr<MediaSource>& media_source,
               const std::string& id);

  // Web API: SourceBuffer
  //
  scoped_refptr<TimeRanges> buffered(
      script::ExceptionState* exception_state) const;
  double timestamp_offset(script::ExceptionState* exception_state) const;
  void set_timestamp_offset(double offset,
                            script::ExceptionState* exception_state);
  void Append(const script::Handle<script::Uint8Array>& data,
              script::ExceptionState* exception_state);
  void Abort(script::ExceptionState* exception_state);

  // Custom, not in any spec.
  //
  const std::string& id() const { return id_; }
  // Detach it from the MediaSource object.
  void Close();

  DEFINE_WRAPPABLE_TYPE(SourceBuffer);
  void TraceMembers(script::Tracer* tracer) override;

 private:
  scoped_refptr<MediaSource> media_source_;
  const std::string id_;
  double timestamp_offset_;
};

}  // namespace dom
}  // namespace cobalt

#endif  // COBALT_DOM_SOURCE_BUFFER_H_