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/*
* Copyright (C) 2014-2020 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
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* 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. ``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
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ISOBox.h"
#include <wtf/MediaTime.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
// 4 bytes : 4CC : identifier = 'vttc'
// 4 bytes : unsigned : length
// N bytes : CueSourceIDBox : box : optional
// N bytes : CueIDBox : box : optional
// N bytes : CueTimeBox : box : optional
// N bytes : CueSettingsBox : box : optional
// N bytes : CuePayloadBox : box : required
class ISOWebVTTCue final : public ISOBox {
public:
ISOWebVTTCue(const MediaTime& presentationTime, const MediaTime& duration);
WEBCORE_EXPORT ISOWebVTTCue(MediaTime&& presentationTime, MediaTime&& duration, AtomString&& cueID, String&& cueText, String&& settings = { }, String&& sourceID = { }, String&& originalStartTime = { });
ISOWebVTTCue(const ISOWebVTTCue&) = default;
WEBCORE_EXPORT ISOWebVTTCue(ISOWebVTTCue&&);
WEBCORE_EXPORT ~ISOWebVTTCue();
ISOWebVTTCue& operator=(const ISOWebVTTCue&) = default;
ISOWebVTTCue& operator=(ISOWebVTTCue&&) = default;
static FourCC boxTypeName() { return "vttc"; }
const MediaTime& presentationTime() const { return m_presentationTime; }
const MediaTime& duration() const { return m_duration; }
const String& sourceID() const { return m_sourceID; }
const AtomString& id() const { return m_identifier; }
const String& originalStartTime() const { return m_originalStartTime; }
const String& settings() const { return m_settings; }
const String& cueText() const { return m_cueText; }
String toJSONString() const;
template<class Encoder>
void encode(Encoder& encoder) const
{
encoder << m_presentationTime;
encoder << m_duration;
encoder << m_sourceID;
encoder << m_identifier;
encoder << m_originalStartTime;
encoder << m_settings;
encoder << m_cueText;
}
template <class Decoder>
static std::optional<ISOWebVTTCue> decode(Decoder& decoder)
{
std::optional<MediaTime> presentationTime;
decoder >> presentationTime;
if (!presentationTime)
return std::nullopt;
std::optional<MediaTime> duration;
decoder >> duration;
if (!duration)
return std::nullopt;
std::optional<String> sourceID;
decoder >> sourceID;
if (!sourceID)
return std::nullopt;
std::optional<AtomString> identifier;
decoder >> identifier;
if (!identifier)
return std::nullopt;
std::optional<String> originalStartTime;
decoder >> originalStartTime;
if (!originalStartTime)
return std::nullopt;
std::optional<String> settings;
decoder >> settings;
if (!settings)
return std::nullopt;
std::optional<String> cueText;
decoder >> cueText;
if (!cueText)
return std::nullopt;
return {{
WTFMove(*presentationTime),
WTFMove(*duration),
WTFMove(*identifier),
WTFMove(*cueText),
WTFMove(*settings),
WTFMove(*sourceID),
WTFMove(*originalStartTime)
}};
}
private:
bool parse(JSC::DataView&, unsigned& offset) override;
MediaTime m_presentationTime;
MediaTime m_duration;
String m_sourceID;
AtomString m_identifier;
String m_originalStartTime;
String m_settings;
String m_cueText;
};
} // namespace WebCore
namespace WTF {
template<typename Type>
struct LogArgument;
template <>
struct LogArgument<WebCore::ISOWebVTTCue> {
static String toString(const WebCore::ISOWebVTTCue& cue)
{
return cue.toJSONString();
}
};
} // namespace WTF
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