Mojify demuxers and allow running {Chunk/FFmpeg}Demuxer in a Utility Process

media/base/demuxer_factory.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_BASE_DEMUXER_FACTORY_H_
+#define MEDIA_BASE_DEMUXER_FACTORY_H_
+
+#include <memory>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "media/base/demuxer.h"
+#include "media/base/media_export.h"
+#include "media/base/source_buffer.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace media {
+
+// A factory class for creating media::Demuxer to be used by media pipeline.
+class MEDIA_EXPORT DemuxerFactory {
+ public:
+  DemuxerFactory();
+  virtual ~DemuxerFactory();
+
+  virtual std::unique_ptr<Demuxer> CreateDemuxer(
+      const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner,
+      const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+      DataSource* data_source,
+      const Demuxer::EncryptedMediaInitDataCB& encrypted_media_init_data_cb,
+      const Demuxer::MediaTracksUpdatedCB& media_tracks_updated_cb) = 0;
+
+  virtual std::unique_ptr<Demuxer> CreateDemuxerSourceBuffer(
+      const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner,
+      const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+      const base::Closure& open_cb,
+      const Demuxer::EncryptedMediaInitDataCB& encrypted_media_init_data_cb,
+      media::SourceBuffer** source_buffer_out) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DemuxerFactory);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_DEMUXER_FACTORY_H_