PooledMediaPlayerFactory.h

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/*
 * Copyright Amazon.com, Inc. or its affiliates. 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.
 * A copy of the License is located at
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file 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.
 */

#ifndef ALEXA_CLIENT_SDK_AVSCOMMON_UTILS_INCLUDE_AVSCOMMON_UTILS_MEDIAPLAYER_POOLEDMEDIAPLAYERFACTORY_H_
#define ALEXA_CLIENT_SDK_AVSCOMMON_UTILS_INCLUDE_AVSCOMMON_UTILS_MEDIAPLAYER_POOLEDMEDIAPLAYERFACTORY_H_

#include <vector>
#include <unordered_set>

#include <AVSCommon/Utils/MediaPlayer/PooledMediaResourceProviderInterface.h>
#include <AVSCommon/Utils/MediaPlayer/MediaPlayerInterface.h>
#include <AVSCommon/Utils/RequiresShutdown.h>

namespace alexaClientSDK {
namespace mediaPlayer {

class PooledMediaPlayerFactory : public avsCommon::utils::mediaPlayer::MediaPlayerFactoryInterface {
public:
    static std::unique_ptr<PooledMediaPlayerFactory> create(
        const std::vector<std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerInterface>>& pool,
        const avsCommon::utils::mediaPlayer::Fingerprint& fingerprint = {});

    virtual ~PooledMediaPlayerFactory();

    avsCommon::utils::mediaPlayer::Fingerprint getFingerprint() override;
    std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerInterface> acquireMediaPlayer() override;
    bool releaseMediaPlayer(std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerInterface> mediaPlayer) override;
    bool isMediaPlayerAvailable() override;
    void addObserver(
        std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerFactoryObserverInterface> observer) override;
    void removeObserver(
        std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerFactoryObserverInterface> observer) override;

protected:
    PooledMediaPlayerFactory(
        const std::vector<std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerInterface>>& mediaPlayerPool,
        const avsCommon::utils::mediaPlayer::Fingerprint& fingerprint = {});

    void notifyObservers();

    std::vector<std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerInterface>> m_availablePlayerPool;
    std::vector<std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerInterface>> m_inUsePlayerPool;
    std::unordered_set<std::shared_ptr<avsCommon::utils::mediaPlayer::MediaPlayerFactoryObserverInterface>> m_observers;
    avsCommon::utils::mediaPlayer::Fingerprint m_fingerprint;
};

}  // namespace mediaPlayer
}  // namespace alexaClientSDK

#endif  // ALEXA_CLIENT_SDK_AVSCOMMON_UTILS_INCLUDE_AVSCOMMON_UTILS_MEDIAPLAYER_POOLEDMEDIAPLAYERFACTORY_H_