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// Copyright 2015 Google Inc. 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/media_source.h"
#define COBALT_DOM_MEDIA_SOURCE_H_
#endif // defined(COBALT_MEDIA_SOURCE_2016)
#ifndef COBALT_DOM_MEDIA_SOURCE_H_
#define COBALT_DOM_MEDIA_SOURCE_H_
#include <string>
#include "base/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "cobalt/dom/event_queue.h"
#include "cobalt/dom/event_target.h"
#include "cobalt/dom/media_source_end_of_stream_error.h"
#include "cobalt/dom/media_source_ready_state.h"
#include "cobalt/dom/source_buffer.h"
#include "cobalt/dom/source_buffer_list.h"
#include "cobalt/dom/url_registry.h"
#include "cobalt/script/environment_settings.h"
#include "cobalt/script/exception_state.h"
#include "media/player/web_media_player.h"
namespace cobalt {
namespace dom {
// The MediaSource interface exposes functionalities for playing adaptive
// streams.
// https://rawgit.com/w3c/media-source/6747ed7a3206f646963d760100b0f37e2fc7e47e/media-source.html#mediasource
//
// The class also serves as the point of interaction between SourceBuffer and
// the media player. For example, SourceBuffer forward its append() call to
// MediaSource and is forwarded to the player in turn.
// Note that our implementation is based on the MSE draft on 09 August 2012.
class MediaSource : public EventTarget {
public:
typedef UrlRegistry<MediaSource> Registry;
// Custom, not in any spec.
//
MediaSource();
// Web API: MediaSource
//
scoped_refptr<SourceBufferList> source_buffers() const;
scoped_refptr<SourceBufferList> active_source_buffers() const;
double duration(script::ExceptionState* exception_state) const;
void set_duration(double duration, script::ExceptionState* exception_state);
scoped_refptr<SourceBuffer> AddSourceBuffer(
const std::string& type, script::ExceptionState* exception_state);
void RemoveSourceBuffer(const scoped_refptr<SourceBuffer>& source_buffer,
script::ExceptionState* exception_state);
MediaSourceReadyState ready_state() const;
void EndOfStream(script::ExceptionState* exception_state);
void EndOfStream(MediaSourceEndOfStreamError error,
script::ExceptionState* exception_state);
static bool IsTypeSupported(script::EnvironmentSettings* settings,
const std::string& type);
// Custom, not in any spec.
//
// The player is set when the media source is attached to a media element.
// TODO: Invent a MediaSourceClient interface and make WebMediaPlayer inherit
// from it.
void SetPlayer(::media::WebMediaPlayer* player);
void ScheduleEvent(base::Token event_name);
// Methods used by SourceBuffer.
scoped_refptr<TimeRanges> GetBuffered(
const SourceBuffer* source_buffer,
script::ExceptionState* exception_state);
bool SetTimestampOffset(const SourceBuffer* source_buffer,
double timestamp_offset,
script::ExceptionState* exception_state);
void Append(const SourceBuffer* source_buffer, const uint8* buffer, int size,
script::ExceptionState* exception_state);
void Abort(const SourceBuffer* source_buffer,
script::ExceptionState* exception_state);
// Methods used by HTMLMediaElement
void SetReadyState(MediaSourceReadyState ready_state);
DEFINE_WRAPPABLE_TYPE(MediaSource);
void TraceMembers(script::Tracer* tracer) override;
private:
// From EventTarget.
std::string GetDebugName() override { return "MediaSource"; }
MediaSourceReadyState ready_state_;
::media::WebMediaPlayer* player_;
EventQueue event_queue_;
scoped_refptr<SourceBufferList> source_buffers_;
};
} // namespace dom
} // namespace cobalt
#endif // COBALT_DOM_MEDIA_SOURCE_H_