qplatformmediarecorder_p.h

Enable keyboard shortcuts

// 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

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#ifndef QPLATFORMMEDIARECORDER_H

#define QPLATFORMMEDIARECORDER_H

#include <QtCore/qsize.h>

#include <QtCore/qurl.h>

#if QT_CONFIG(mimetype)

#include <QtCore/qmimetype.h>

#endif

#include <QtMultimedia/private/qerrorinfo_p.h>

#include <QtMultimedia/qmediaformat.h>

#include <QtMultimedia/qmediametadata.h>

#include <QtMultimedia/qmediarecorder.h>

#include <QtCore/private/qglobal_p.h>

#include <QtCore/qiodevice.h>

#include <QtCore/qpointer.h>

QT_BEGIN_NAMESPACE

class QUrl;

QT_END_NAMESPACE

QT_BEGIN_NAMESPACE

class Q_MULTIMEDIA_EXPORT QMediaEncoderSettings

    QMediaRecorder::EncodingMode m_encodingMode = QMediaRecorder::ConstantQualityEncoding;

    QMediaRecorder::Quality m_quality = QMediaRecorder::NormalQuality;

    QMediaFormat m_format;

    int m_audioBitrate = -1;

    int m_audioSampleRate = -1;

    int m_audioChannels = -1;

    QSize m_videoResolution = QSize(-1, -1);

    int m_videoFrameRate = -1;

    int m_videoBitRate = -1;

public:

    QMediaFormat mediaFormat() const { return m_format; }

    void setMediaFormat(const QMediaFormat &format) { m_format = format; }

    void resolveFormat(QMediaFormat::ResolveFlags flags = QMediaFormat::NoFlags)

    { m_format.resolveForEncoding(flags); }

    QMediaFormat::FileFormat fileFormat() const { return mediaFormat().fileFormat(); }

    QMediaFormat::VideoCodec videoCodec() const { return mediaFormat().videoCodec(); }

    QMediaFormat::AudioCodec audioCodec() const { return mediaFormat().audioCodec(); }

#if QT_CONFIG(mimetype)

    QMimeType mimeType() const { return mediaFormat().mimeType(); }

#endif

    QString preferredSuffix() const

#if QT_CONFIG(mimetype)

        return mimeType().preferredSuffix();

#else

        return QStringLiteral("");

#endif

    QMediaRecorder::EncodingMode encodingMode() const { return m_encodingMode; }

    void setEncodingMode(QMediaRecorder::EncodingMode mode) { m_encodingMode = mode; }

    QMediaRecorder::Quality quality() const { return m_quality; }

    void setQuality(QMediaRecorder::Quality quality) { m_quality = quality; }

    QSize videoResolution() const { return m_videoResolution; }

    void setVideoResolution(const QSize &size) { m_videoResolution = size; }

    qreal videoFrameRate() const { return m_videoFrameRate; }

    void setVideoFrameRate(qreal rate) { m_videoFrameRate = rate; }

    int videoBitRate() const { return m_videoBitRate; }

    void setVideoBitRate(int bitrate) { m_videoBitRate = bitrate; }

    int audioBitRate() const { return m_audioBitrate; }

    void setAudioBitRate(int bitrate) { m_audioBitrate = bitrate; }

    int audioChannelCount() const { return m_audioChannels; }

    void setAudioChannelCount(int channels) { m_audioChannels = channels; }

    int audioSampleRate() const { return m_audioSampleRate; }

    void setAudioSampleRate(int rate) { m_audioSampleRate = rate; }

    bool operator==(const QMediaEncoderSettings &other) const

        return m_format == other.m_format &&

               m_encodingMode == other.m_encodingMode &&

               m_quality == other.m_quality &&

               m_audioBitrate == other.m_audioBitrate &&

               m_audioSampleRate == other.m_audioSampleRate &&

               m_audioChannels == other.m_audioChannels &&

               m_videoResolution == other.m_videoResolution &&

               m_videoFrameRate == other.m_videoFrameRate &&

               m_videoBitRate == other.m_videoBitRate;

    bool operator!=(const QMediaEncoderSettings &other) const

    { return !operator==(other); }

};

class Q_MULTIMEDIA_EXPORT QPlatformMediaRecorder

public:

    virtual ~QPlatformMediaRecorder() {}

    virtual bool isLocationWritable(const QUrl &location) const = 0;

    virtual QMediaRecorder::RecorderState state() const { return m_state; }

    virtual void record(QMediaEncoderSettings &settings) = 0;

    virtual void pause();

    virtual void resume();

    virtual void stop() = 0;

    virtual qint64 duration() const { return m_duration; }

    virtual void setMetaData(const QMediaMetaData &) {}

    virtual QMediaMetaData metaData() const { return {}; }

    QMediaRecorder::Error error() const { return m_error.code(); }

    QString errorString() const { return m_error.description(); }

    QUrl outputLocation() const { return m_outputLocation; }

    virtual void setOutputLocation(const QUrl &location) { m_outputLocation = location; }

    QUrl actualLocation() const { return m_actualLocation; }

    void clearActualLocation() { m_actualLocation.clear(); }

    void clearError() { updateError(QMediaRecorder::NoError, QString()); }

    QIODevice *outputDevice() const { return m_outputDevice; }

    void setOutputDevice(QIODevice *device) { m_outputDevice = device; }

    virtual void updateAutoStop() { }

protected:

    explicit QPlatformMediaRecorder(QMediaRecorder *parent);

    void stateChanged(QMediaRecorder::RecorderState state);

    void durationChanged(qint64 position);

    void actualLocationChanged(const QUrl &location);

    void updateError(QMediaRecorder::Error error, const QString &errorString);

    void metaDataChanged();

    QMediaRecorder *mediaRecorder() { return q; }

    QString findActualLocation(const QMediaEncoderSettings &settings) const;

private:

    QMediaRecorder *q = nullptr;

    QErrorInfo<QMediaRecorder::Error> m_error;

    QUrl m_actualLocation;

    QUrl m_outputLocation;

    QPointer<QIODevice> m_outputDevice;

    qint64 m_duration = 0;

    QMediaRecorder::RecorderState m_state = QMediaRecorder::StoppedState;

};

QT_END_NAMESPACE

#endif