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// Copyright 2014 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_CAST_LOGGING_RAW_EVENT_SUBSCRIBER_BUNDLE_H_
#define MEDIA_CAST_LOGGING_RAW_EVENT_SUBSCRIBER_BUNDLE_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "media/cast/logging/encoding_event_subscriber.h"
#include "media/cast/logging/stats_event_subscriber.h"
namespace media {
namespace cast {
class CastEnvironment;
class ReceiverTimeOffsetEstimator;
// Allow 9MB for serialized video / audio event logs.
const int kMaxSerializedBytes = 9000000;
// Assume serialized log data for each frame will take up to 150 bytes.
const int kMaxVideoEventEntries = kMaxSerializedBytes / 150;
// Assume serialized log data for each frame will take up to 75 bytes.
const int kMaxAudioEventEntries = kMaxSerializedBytes / 75;
// A bundle for raw event subscribers for a single stream.
// It contains an EncodingEventSubscriber and a StatsSubscriber.
class RawEventSubscriberBundleForStream {
public:
RawEventSubscriberBundleForStream(
const scoped_refptr<CastEnvironment>& cast_environment,
bool is_audio,
ReceiverTimeOffsetEstimator* offset_estimator);
~RawEventSubscriberBundleForStream();
EncodingEventSubscriber* GetEncodingEventSubscriber();
StatsEventSubscriber* GetStatsEventSubscriber();
private:
const scoped_refptr<CastEnvironment> cast_environment_;
EncodingEventSubscriber event_subscriber_;
StatsEventSubscriber stats_subscriber_;
DISALLOW_COPY_AND_ASSIGN(RawEventSubscriberBundleForStream);
};
// A bundle of subscribers for all streams. An instance of this object
// is associated with a CastEnvironment.
// This class can be used for managing event subscribers
// in a session where they could be multiple streams (i.e. CastSessionDelegate).
// It also contains a ReceiverTimeOffsetEstimator that is shared by subscribers
// of different streams.
class RawEventSubscriberBundle {
public:
explicit RawEventSubscriberBundle(
const scoped_refptr<CastEnvironment>& cast_environment);
~RawEventSubscriberBundle();
void AddEventSubscribers(bool is_audio);
void RemoveEventSubscribers(bool is_audio);
EncodingEventSubscriber* GetEncodingEventSubscriber(
bool is_audio);
StatsEventSubscriber* GetStatsEventSubscriber(bool is_audio);
private:
// Map from (is_audio) -> RawEventSubscriberBundleForStream.
// TODO(imcheng): This works because we only have 1 audio and 1 video stream.
// This needs to scale better.
typedef std::map<bool, linked_ptr<RawEventSubscriberBundleForStream> >
SubscribersMapByStream;
const scoped_refptr<CastEnvironment> cast_environment_;
SubscribersMapByStream subscribers_;
scoped_ptr<ReceiverTimeOffsetEstimator> receiver_offset_estimator_;
DISALLOW_COPY_AND_ASSIGN(RawEventSubscriberBundle);
};
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_LOGGING_RAW_EVENT_SUBSCRIBER_BUNDLE_H_
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