qffmpegsubtitlerenderer.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "playbackengine/qffmpegsubtitlerenderer_p.h"
 
#include "qvideosink.h"
#include "qdebug.h"
 
QT_BEGIN_NAMESPACE
 
namespace QFFmpeg {
 
SubtitleRenderer::SubtitleRenderer(const TimeController &tc, QVideoSink *sink)
    : Renderer(tc), m_sink(sink)
{
}
 
void SubtitleRenderer::setOutput(QVideoSink *sink, bool cleanPrevSink)
{
    setOutputInternal(m_sink, sink, [=](QVideoSink *prev) {
        if (!prev)
            return;
 
        if (sink)
            sink->setSubtitleText(prev->subtitleText());
 
        if (cleanPrevSink)
            prev->setSubtitleText({});
    });
}
 
SubtitleRenderer::~SubtitleRenderer()
{
    if (m_sink)
        m_sink->setSubtitleText({});
}
 
Renderer::RenderingResult SubtitleRenderer::renderInternal(Frame frame)
{
    if (m_sink)
        m_sink->setSubtitleText(frame.isValid() ? frame.text() : QString());
 
    return {};
}
 
} // namespace QFFmpeg
 
QT_END_NAMESPACE
 
#include "moc_qffmpegsubtitlerenderer_p.cpp"