Source/WebCore/platform/graphics/cocoa/AudioTrackPrivateWebM.cpp

/*
 * Copyright (C) 2020 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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#include "config.h"
#include "AudioTrackPrivateWebM.h"

#if ENABLE(MEDIA_SOURCE)

namespace WebCore {

Ref<AudioTrackPrivateWebM> AudioTrackPrivateWebM::create(webm::TrackEntry&& trackEntry)
{
    return adoptRef(*new AudioTrackPrivateWebM(WTFMove(trackEntry)));
}

AudioTrackPrivateWebM::AudioTrackPrivateWebM(webm::TrackEntry&& trackEntry)
    : m_track(WTFMove(trackEntry))
{
    if (m_track.is_enabled.is_present())
        setEnabled(m_track.is_enabled.value());
}

AtomString AudioTrackPrivateWebM::id() const
{
    if (m_trackID.isNull()) {
        auto uid = trackUID();
        m_trackID = uid ? AtomString::number(*uid) : emptyAtom();
    }
    return m_trackID;
}

std::optional<uint64_t> AudioTrackPrivateWebM::trackUID() const
{
    if (m_track.track_uid.is_present())
        return m_track.track_uid.value();
    return std::nullopt;
}

std::optional<bool> AudioTrackPrivateWebM::defaultEnabled() const
{
    if (m_track.is_enabled.is_present())
        return m_track.is_enabled.value();
    return std::nullopt;
}

AtomString AudioTrackPrivateWebM::label() const
{
    if (m_label.isNull())
        m_label = m_track.name.is_present() ? AtomString::fromUTF8(m_track.name.value().data(), m_track.name.value().length()) : emptyAtom();
    return m_label;
}

AtomString AudioTrackPrivateWebM::language() const
{
    if (m_language.isNull())
        m_language = m_track.language.is_present() ? AtomString::fromUTF8(m_track.language.value().data(), m_track.language.value().length()) : emptyAtom();
    return m_language;
}

int AudioTrackPrivateWebM::trackIndex() const
{
    if (m_track.track_number.is_present())
        return m_track.track_number.value();
    return 0;
}

std::optional<MediaTime> AudioTrackPrivateWebM::codecDelay() const
{
    if (!m_track.codec_delay.is_present())
        return { };
    constexpr uint32_t k_us_in_seconds = 1000000000;
    return MediaTime(m_track.codec_delay.value(), k_us_in_seconds);
}

void AudioTrackPrivateWebM::setDiscardPadding(const MediaTime& discardPadding)
{
    m_discardPadding = discardPadding;
}

std::optional<MediaTime> AudioTrackPrivateWebM::discardPadding() const
{
    if (m_discardPadding.isInvalid() || m_discardPadding < MediaTime())
        return { };
    return m_discardPadding;
}

}

#endif // ENABLE(MEDIA_SOURCE)