FFmpegInputControllerInterface.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_MEDIAPLAYER_ANDROIDSLESMEDIAPLAYER_INCLUDE_ANDROIDSLESMEDIAPLAYER_FFMPEGINPUTCONTROLLERINTERFACE_H_
#define ALEXA_CLIENT_SDK_MEDIAPLAYER_ANDROIDSLESMEDIAPLAYER_INCLUDE_ANDROIDSLESMEDIAPLAYER_FFMPEGINPUTCONTROLLERINTERFACE_H_

#include <chrono>
#include <ostream>
#include <tuple>

struct AVFormatContext;

namespace alexaClientSDK {
namespace mediaPlayer {
namespace android {

class FFmpegInputControllerInterface {
public:
    enum class Result {
        OK,
        OK_EMPTY,
        TRY_AGAIN,
        ERROR
    };

    virtual bool hasNext() const = 0;

    virtual bool next() = 0;

    virtual std::tuple<Result, std::shared_ptr<AVFormatContext>, std::chrono::milliseconds>
    getCurrentFormatContext() = 0;

    virtual ~FFmpegInputControllerInterface() = default;
};

inline std::ostream& operator<<(std::ostream& stream, const FFmpegInputControllerInterface::Result& result) {
    switch (result) {
        case FFmpegInputControllerInterface::Result::OK:
            stream << "OK";
            break;
        case FFmpegInputControllerInterface::Result::OK_EMPTY:
            stream << "OK_EMPTY";
            break;
        case FFmpegInputControllerInterface::Result::TRY_AGAIN:
            stream << "TRY_AGAIN";
            break;
        case FFmpegInputControllerInterface::Result::ERROR:
            stream << "ERROR";
            break;
    }
    return stream;
}

}  // namespace android
}  // namespace mediaPlayer
}  // namespace alexaClientSDK

#endif  // ALEXA_CLIENT_SDK_MEDIAPLAYER_ANDROIDSLESMEDIAPLAYER_INCLUDE_ANDROIDSLESMEDIAPLAYER_FFMPEGINPUTCONTROLLERINTERFACE_H_