InbandMetadataTextTrackPrivateAVF.cpp   [plain text]

/*
 * Copyright (C) 2014-2015 Apple Inc. All rights reserved.
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#include "config.h"

#if ENABLE(VIDEO) && ENABLE(DATACUE_VALUE) && (USE(AVFOUNDATION) || PLATFORM(IOS))
#include "InbandMetadataTextTrackPrivateAVF.h"

#include "InbandTextTrackPrivateClient.h"
#include "Logging.h"
#include <CoreMedia/CoreMedia.h>
#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>
#include <wtf/unicode/CharacterNames.h>

namespace WebCore {

PassRefPtr<InbandMetadataTextTrackPrivateAVF> InbandMetadataTextTrackPrivateAVF::create(InbandTextTrackPrivate::Kind kind, InbandTextTrackPrivate::CueFormat cueFormat, const AtomicString& id)
{
    return adoptRef(new InbandMetadataTextTrackPrivateAVF(kind, cueFormat, id));
}

InbandMetadataTextTrackPrivateAVF::InbandMetadataTextTrackPrivateAVF(InbandTextTrackPrivate::Kind kind, InbandTextTrackPrivate::CueFormat cueFormat, const AtomicString& id)
    : InbandTextTrackPrivate(cueFormat)
    , m_kind(kind)
    , m_id(id)
{
}

InbandMetadataTextTrackPrivateAVF::~InbandMetadataTextTrackPrivateAVF()
{
}

#if ENABLE(DATACUE_VALUE)
void InbandMetadataTextTrackPrivateAVF::addDataCue(const MediaTime& start, const MediaTime& end, PassRefPtr<SerializedPlatformRepresentation> prpCueData, const String& type)
{
    ASSERT(cueFormat() == Data);
    ASSERT(start >= MediaTime::zeroTime());

    if (!client())
        return;

    RefPtr<SerializedPlatformRepresentation> cueData = prpCueData;
    m_currentCueStartTime = start;
    if (end.isPositiveInfinite())
        m_incompleteCues.append(IncompleteMetaDataCue { cueData.get(), start });
    client()->addDataCue(this, start, end, cueData, type);
}

void InbandMetadataTextTrackPrivateAVF::updatePendingCueEndTimes(const MediaTime& time)
{
    ASSERT(time >= MediaTime::zeroTime());

    if (time >= m_currentCueStartTime) {
        if (client()) {
            for (auto& partialCue : m_incompleteCues) {
                LOG(Media, "InbandMetadataTextTrackPrivateAVF::updatePendingCueEndTimes(%p) - updating cue: start=%s, end=%s", this, toString(partialCue.startTime).utf8().data(), toString(time).utf8().data());
                client()->updateDataCue(this, partialCue.startTime, time, partialCue.cueData);
            }
        }
    } else
        LOG(Media, "InbandMetadataTextTrackPrivateAVF::updatePendingCueEndTimes negative length cue(s) ignored: start=%s, end=%s\n", toString(m_currentCueStartTime).utf8().data(), toString(time).utf8().data());

    m_incompleteCues.resize(0);
    m_currentCueStartTime = MediaTime::zeroTime();
}
#endif

void InbandMetadataTextTrackPrivateAVF::flushPartialCues()
{
    if (m_currentCueStartTime && m_incompleteCues.size())
        LOG(Media, "InbandMetadataTextTrackPrivateAVF::resetCueValues flushing incomplete data for cues: start=%s\n", toString(m_currentCueStartTime).utf8().data());

    if (client()) {
        for (auto& partialCue : m_incompleteCues)
            client()->removeDataCue(this, partialCue.startTime, MediaTime::positiveInfiniteTime(), partialCue.cueData);
    }

    m_incompleteCues.resize(0);
    m_currentCueStartTime = MediaTime::zeroTime();
}

} // namespace WebCore

#endif // ENABLE(VIDEO) && (USE(AVFOUNDATION) || PLATFORM(IOS))