PlaybackConfiguration.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_PLAYBACKCONFIGURATION_H_
#define ALEXA_CLIENT_SDK_MEDIAPLAYER_ANDROIDSLESMEDIAPLAYER_INCLUDE_ANDROIDSLESMEDIAPLAYER_PLAYBACKCONFIGURATION_H_

#include <cstddef>
#include <cstdint>

namespace alexaClientSDK {
namespace mediaPlayer {
namespace android {

class PlaybackConfiguration {
public:
    enum class ChannelLayout {
        LAYOUT_MONO,
        LAYOUT_STEREO,
        LAYOUT_SURROUND,
        LAYOUT_5POINT1,
    };

    enum class SampleFormat { UNSIGNED_8 = 8, SIGNED_16 = 16, SIGNED_32 = 32 };

    inline bool isLittleEndian() const;

    inline size_t sampleRate() const;

    inline SampleFormat sampleFormat() const;

    inline ChannelLayout channelLayout() const;

    inline size_t numberChannels() const;

    inline size_t sampleSizeBytes() const;

    ~PlaybackConfiguration() = default;

    PlaybackConfiguration();

    PlaybackConfiguration(
        const bool isLittleEndian,
        const size_t sampleRate,
        const ChannelLayout layout,
        const SampleFormat sampleFormat);

private:
    static size_t layoutToChannels(ChannelLayout layout);

    const bool m_isLittleEndian;

    const size_t m_sampleRate;

    const SampleFormat m_sampleFormat;

    const ChannelLayout m_layout;

    const size_t m_numberChannels;
};

bool PlaybackConfiguration::isLittleEndian() const {
    return m_isLittleEndian;
}

size_t PlaybackConfiguration::sampleRate() const {
    return m_sampleRate;
}

PlaybackConfiguration::SampleFormat PlaybackConfiguration::sampleFormat() const {
    return m_sampleFormat;
}

size_t PlaybackConfiguration::numberChannels() const {
    return m_numberChannels;
}

size_t PlaybackConfiguration::sampleSizeBytes() const {
    constexpr size_t byteSize = 8;
    return static_cast<size_t>(m_sampleFormat) / byteSize;
}

PlaybackConfiguration::ChannelLayout PlaybackConfiguration::channelLayout() const {
    return m_layout;
}

inline std::ostream& operator<<(std::ostream& stream, const PlaybackConfiguration::SampleFormat& format) {
    switch (format) {
        case PlaybackConfiguration::SampleFormat::UNSIGNED_8:
            return stream << "UNSIGNED_8";
        case PlaybackConfiguration::SampleFormat::SIGNED_16:
            return stream << "SIGNED_16";
        case PlaybackConfiguration::SampleFormat::SIGNED_32:
            return stream << "SIGNED_32";
    }
    return stream << "INVALID";
}

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

#endif  // ALEXA_CLIENT_SDK_MEDIAPLAYER_ANDROIDSLESMEDIAPLAYER_INCLUDE_ANDROIDSLESMEDIAPLAYER_PLAYBACKCONFIGURATION_H_