chromium/media/filters/demuxer_manager.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_FILTERS_DEMUXER_MANAGER_H_
#define MEDIA_FILTERS_DEMUXER_MANAGER_H_

#include <optional>
#include <vector>

#include "base/functional/callback.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
#include "media/base/data_source.h"
#include "media/base/demuxer.h"
#include "media/base/eme_constants.h"
#include "media/base/media_export.h"
#include "media/base/media_log.h"
#include "media/base/pipeline.h"
#include "media/base/pipeline_status.h"
#include "media/filters/chunk_demuxer.h"
#include "net/storage_access_api/status.h"
#include "url/origin.h"

#if BUILDFLAG(ENABLE_HLS_DEMUXER)
#include "base/threading/sequence_bound.h"
#include "media/filters/hls_data_source_provider.h"
#include "media/filters/hls_media_player_tag_recorder.h"
#include "url/gurl.h"
#endif  // BUILDFLAG(ENABLE_HLS_DEMUXER)

namespace media {

enum class HlsFallbackImplementation { … };

// This class manages both an implementation of media::Demuxer and of
// media::DataSource. DataSource, in particular may be null, since both MSE
// playback and Android's MediaPlayerRenderer do not make use of it. In the
// case that DataSource is present, these objects should have a similar
// lifetime, and both must be destroyed on the media thread, so owning them
// together makes sense. Additionally, the demuxer or data source can change
// during the lifetime of the player that owns them, so encapsulating that
// change logic separately lets the media player impl (WMPI) be a bit simpler,
// and dedicate a higher percentage of its complexity to managing playback
// state.
class MEDIA_EXPORT DemuxerManager { … };

}  // namespace media

#endif  // MEDIA_FILTERS_DEMUXER_MANAGER_H_