qt-everywhere-src-5.15.1/qtmultimedia/src/plugins/avfoundation/camera/avfmediacontainercontrol.mm

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#include "avfmediacontainercontrol.h"

#include <AVFoundation/AVMediaFormat.h>

QT_BEGIN_NAMESPACE

struct ContainerInfo
{
    QString description;
    NSString *fileType;

    ContainerInfo() : fileType(nil) { }
    ContainerInfo(const QString &desc, NSString *type)
        : description(desc), fileType(type)
    { }
};

typedef QMap<QString, ContainerInfo> SupportedContainers;
Q_GLOBAL_STATIC(SupportedContainers, containers);

AVFMediaContainerControl::AVFMediaContainerControl(AVFCameraService *)
    : QMediaContainerControl()
    , m_format(QStringLiteral("mov")) // .mov is the default container format on Apple platforms
{
    if (containers->isEmpty()) {
        containers->insert(QStringLiteral("mov"),
                           ContainerInfo(QStringLiteral("QuickTime movie file format"),
                                         AVFileTypeQuickTimeMovie));
        containers->insert(QStringLiteral("mp4"),
                           ContainerInfo(QStringLiteral("MPEG-4 file format"),
                                         AVFileTypeMPEG4));
        containers->insert(QStringLiteral("m4v"),
                           ContainerInfo(QStringLiteral("iTunes video file format"),
                                         AVFileTypeAppleM4V));
#ifdef Q_OS_IOS
        containers->insert(QStringLiteral("3gp"),
                           ContainerInfo(QStringLiteral("3GPP file format"),
                                         AVFileType3GPP));
#endif
    }
}

QStringList AVFMediaContainerControl::supportedContainers() const
{
    return containers->keys();
}

QString AVFMediaContainerControl::containerFormat() const
{
    return m_format;
}

void AVFMediaContainerControl::setContainerFormat(const QString &format)
{
    if (!containers->contains(format)) {
        qWarning("Unsupported container format: '%s'", format.toLocal8Bit().constData());
        return;
    }

    m_format = format;
}

QString AVFMediaContainerControl::containerDescription(const QString &formatMimeType) const
{
    return containers->value(formatMimeType).description;
}

NSString *AVFMediaContainerControl::fileType() const
{
    return containers->value(m_format).fileType;
}

QT_END_NAMESPACE