diff options
Diffstat (limited to 'src/multimedia/qmediaformat.cpp')
| -rw-r--r-- | src/multimedia/qmediaformat.cpp | 479 |
1 files changed, 479 insertions, 0 deletions
diff --git a/src/multimedia/qmediaformat.cpp b/src/multimedia/qmediaformat.cpp new file mode 100644 index 000000000..43bd38d4b --- /dev/null +++ b/src/multimedia/qmediaformat.cpp @@ -0,0 +1,479 @@ +/**************************************************************************** +** +** Copyright (C) 2021 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmediaformat.h" +#include "private/qmediaplatformintegration_p.h" +#include "private/qmediaplatformformatinfo_p.h" + +QT_BEGIN_NAMESPACE + +namespace { + +// info from https://en.wikipedia.org/wiki/Comparison_of_video_container_formats +constexpr bool audioSupportMatrix[QMediaFormat::FileFormat::LastFileFormat + 1][(int)QMediaFormat::AudioCodec::LastAudioCodec + 1] = +{ + // MP3, AAC, AC3, EAC3, FLAC, DTHD, Opus,Vorbis, Wave, WMA + // Container formats (Audio and Video) + { true, true, true, true, true, false, true, false, false, true }, // ASF + { true, true, true, false, true, false, true, false, false, true }, // AVI, + { true, true, true, true, true, true, true, true, false, true }, // Matroska, + { true, true, true, true, true, true, true, false, false, true }, // MPEG4, + { false, false, false, false, true, false, true, true, false, false }, // Ogg, + { true, true, true, true, false, false, false, false, false, false }, // QuickTime, + { false, false, false, false, true, false, true, true, false, false }, // WebM, + // Audio Formats + { false, true, false, false, false, false, false, false, false, false }, // AAC, + { false, false, false, false, true, false, false, false, false, false }, // FLAC, + { true, false, false, false, false, false, false, false, false, false }, // Mpeg3, + { true, true, true, true, true, true, true, false, false, true }, // Mpeg4Audio, + { false, false, false, false, false, false, true, false, false, false }, // Opus, + { false, false, false, false, false, false, false, false, true, false }, // Wave, + { false, false, false, false, false, false, false, false, false, true }, // WindowsMediaAudio +}; + +// info from https://en.wikipedia.org/wiki/Comparison_of_video_container_formats +constexpr bool videoSupportMatrix[QMediaFormat::FileFormat::LastFileFormat + 1][(int)QMediaFormat::VideoCodec::LastVideoCodec + 1] = +{ + //MPEG1, MPEG2, MPEG4, H264, H265, VP8, VP9, AV1,Theora, MotionJPEG, + // Container formats (Audio and Video) + { true, true, true, true, true, false, false, false, false,false }, // ASF + { true, true, true, true, true, true, true, false, true, true }, // AVI, + { true, true, true, true, true, true, true, true, true, false }, // Matroska, + { true, true, true, true, true, true, true, true, true, true }, // MPEG4, + { false, true, true, true, true, false, false, false, false, true }, // Ogg, + { false, false, false, false, false, false, false, false, true, false }, // QuickTime, + { false, false, false, false, false, true, true, true, false, false }, // WebM, + // Audio Formats + { false, false, false, false, false, false, false, false, false, false }, // AAC, + { false, false, false, false, false, false, false, false, false, false }, // FLAC, + { false, false, false, false, false, false, false, false, false, false }, // Mpeg3, + { false, false, false, false, false, false, false, false, false, false }, // Mpeg4Audio, + { false, false, false, false, false, false, false, false, false, false }, // Opus, + { false, false, false, false, false, false, false, false, false, false }, // Wave, + { false, false, false, false, false, false, false, false, false, false }, // WindowsMediaAudio +}; + +constexpr QMediaFormat::AudioCodec audioPriorityList[] = +{ + QMediaFormat::AudioCodec::AAC, + QMediaFormat::AudioCodec::MP3, + QMediaFormat::AudioCodec::AC3, + QMediaFormat::AudioCodec::Opus, + QMediaFormat::AudioCodec::EAC3, + QMediaFormat::AudioCodec::DolbyTrueHD, + QMediaFormat::AudioCodec::WindowsMediaAudio, + QMediaFormat::AudioCodec::FLAC, + QMediaFormat::AudioCodec::Vorbis, + QMediaFormat::AudioCodec::Wave, + QMediaFormat::AudioCodec::Invalid +}; + +constexpr QMediaFormat::VideoCodec videoPriorityList[] = +{ + QMediaFormat::VideoCodec::H265, + QMediaFormat::VideoCodec::VP9, + QMediaFormat::VideoCodec::H264, + QMediaFormat::VideoCodec::AV1, + QMediaFormat::VideoCodec::VP8, + QMediaFormat::VideoCodec::Theora, + QMediaFormat::VideoCodec::MPEG4, + QMediaFormat::VideoCodec::MPEG2, + QMediaFormat::VideoCodec::MPEG1, + QMediaFormat::VideoCodec::MotionJPEG, +}; + +} + +/*! \enum QMediaFormat::FileFormat + + Describes the container format used in a multimedia file or stream. +*/ + +/*! \enum QMediaFormat::AudioCodec + + Describes the audio coded used in multimedia file or stream. +*/ + +/*! \enum QMediaFormat::AudioCodec + + Describes the video coded used in multimedia file or stream. +*/ + +/*! \class QMediaFormat + + Describes an encoding format for a multimedia file or stream. + + You can check whether a certain QMediaFormat can be used for encoding + or decoding using QMediaDecoderInfo or QMediaEncoderInfo. +*/ + +// these are non inline to make a possible future addition of a d pointer binary compatible +QMediaFormat::QMediaFormat(FileFormat format) + : fmt(format) +{ + Q_UNUSED(d); + const QMediaFormat::VideoCodec *v = videoPriorityList; + while (*v != QMediaFormat::VideoCodec::Invalid) { + if (videoSupportMatrix[fmt][(int)*v]) + break; + ++v; + } + video = *v; + + const QMediaFormat::AudioCodec *a = audioPriorityList; + while (*a != QMediaFormat::AudioCodec::Invalid) { + if (videoSupportMatrix[fmt][(int)*a]) + break; + ++a; + } + audio = *a; +} + +QMediaFormat::~QMediaFormat() = default; +QMediaFormat::QMediaFormat(const QMediaFormat &other) = default; +QMediaFormat &QMediaFormat::operator=(const QMediaFormat &other) = default; + + +/*! \fn void QMediaFormat::setMediaContainer(QMediaFormat::FileFormat container) + + Sets the container to \a container. + + \sa mediaContainer(), QMediaFormat::FileFormat +*/ + +/*! \fn QMediaFormat::FileFormat QMediaFormat::mediaContainer() const + + Returns the container used in this format. + + \sa setMediaContainer(), QMediaFormat::FileFormat +*/ + +/*! \fn void QMediaFormat::setVideoCodec(VideoCodec codec) + + Sets the video codec to \a codec. + + \sa videoCodec(), QMediaFormat::VideoCodec +*/ +bool QMediaFormat::setVideoCodec(VideoCodec codec) +{ + if (!videoSupportMatrix[fmt][(int)codec]) + return false; + video = codec; + return true; +} + +/*! \fn QMediaFormat::VideoCodec QMediaFormat::videoCodec() const + + Returns the video codec used in this format. + + \sa setVideoCodec(), QMediaFormat::VideoCodec +*/ + +/*! \fn void QMediaFormat::setAudioCodec(AudioCodec codec) + + Sets the audio codec to \a codec. + + \sa audioCodec(), QMediaFormat::AudioCodec +*/ +bool QMediaFormat::setAudioCodec(QMediaFormat::AudioCodec codec) +{ + if (!audioSupportMatrix[fmt][(int)codec]) + return false; + audio = codec; + return true; +} + +/*! \fn QMediaFormat::AudioCodec QMediaFormat::audioCodec() const + + Returns the audio codec used in this format. + + \sa setAudioCodec(), QMediaFormat::AudioCodec +*/ + +/*! \fn bool QMediaFormat::isValid() const + + Returns true if the format is valid. +*/ + +/*! + Returns true if Qt Multimedia can decode this format. + + \sa QMediaDecoderInfo + */ +bool QMediaFormat::canDecode() const +{ + if (!QMediaDecoderInfo::supportedFileFormats().contains(fmt)) + return false; + if (audio == QMediaFormat::AudioCodec::Invalid && video == QMediaFormat::VideoCodec::Invalid) + return false; + if (audio != QMediaFormat::AudioCodec::Invalid) { + if (!QMediaDecoderInfo::supportedAudioCodecs().contains(audio)) + return false; + } + if (video != QMediaFormat::VideoCodec::Invalid) { + if (!QMediaDecoderInfo::supportedVideoCodecs().contains(video)) + return false; + } + return true; +} + +/*! + Returns true if Qt Multimedia can encode this format. + + \sa QMediaEncoderInfo +*/ +bool QMediaFormat::canEncode() const +{ + if (!QMediaEncoderInfo::supportedFileFormats().contains(fmt)) + return false; + if (audio == QMediaFormat::AudioCodec::Invalid && video == QMediaFormat::VideoCodec::Invalid) + return false; + if (audio != QMediaFormat::AudioCodec::Invalid) { + if (!QMediaEncoderInfo::supportedAudioCodecs().contains(audio)) + return false; + } + if (video != QMediaFormat::VideoCodec::Invalid) { + if (!QMediaEncoderInfo::supportedVideoCodecs().contains(video)) + return false; + } + return true; +} + +/*! + Returns true if is is an audio-only file format. + */ +bool QMediaFormat::isAudioFormat() const +{ + return fmt >= AAC; +} + +QString QMediaFormat::fileFormatName(QMediaFormat::FileFormat c) +{ + constexpr const char *descriptions[] = { + "ASF", + "AVI", + "Matroska", + "MPEG-4", + "Ogg", + "QuickTime", + "WebM", + // Audio Formats + "AAC", + "FLAC", + "MP3", + "MPEG-4 Audio", + "Opus", + "Wave", + "Windows Media Audio", + }; + return QString::fromUtf8(descriptions[int(c)]); +} + +QString QMediaFormat::audioCodecName(QMediaFormat::AudioCodec c) +{ + constexpr const char *descriptions[] = { + "Invalid", + "MP3", + "AAC", + "AC3", + "EAC3", + "FLAC", + "DolbyTrueHD", + "Opus", + "Vorbis", + "Wave", + "WindowsMediaAudio", + }; + return QString::fromUtf8(descriptions[int(c) + 1]); +} + +QString QMediaFormat::videoCodecName(QMediaFormat::VideoCodec c) +{ + constexpr const char *descriptions[] = { + "Invalid", + "MPEG1", + "MPEG2", + "MPEG4", + "H264", + "H265", + "VP8", + "VP9", + "AV1", + "Theora", + "MotionJPEG" + }; + return QString::fromUtf8(descriptions[int(c) + 1]); +} + +QString QMediaFormat::fileFormatDescription(QMediaFormat::FileFormat c) +{ + constexpr const char *descriptions[] = { + "Windows Media Format (ASF)", + "Audio Video Interleave (AVI)", + "Matroska Multimedia Container", + "MPEG-4 Video Container", + "Ogg", + "QuickTime Container", + "WebM", + // Audio Formats + "Advanced Audio Codec (AAC)", + "Free Lossless Audio Codec (FLAC)", + "MP3", + "MPEG-4 Audio Container", + "Opus Audio Encoding", + "Wave File", + "Windows Media Audio", + }; + return QString::fromUtf8(descriptions[int(c)]); +} + +QString QMediaFormat::audioCodecDescription(QMediaFormat::AudioCodec c) +{ + constexpr const char *descriptions[] = { + "Invalid Audio Codec", + "MP3", + "Advanced Audio Codec (AAC)", + "Dolby Digital (AC3)", + "Dolby Digital Plus (E-AC3)", + "Free Lossless Audio Codec (FLAC)", + "Dolby True HD", + "Opus", + "Vorbis", + "Wave", + "Windows Media Audio", + }; + return QString::fromUtf8(descriptions[int(c) + 1]); +} + +QString QMediaFormat::videoCodecDescription(QMediaFormat::VideoCodec c) +{ + constexpr const char *descriptions[] = { + "Invalid", + "MPEG-1 Video", + "MPEG-2 Video", + "MPEG-4 Video", + "H.264", + "H.265", + "VP8", + "VP9", + "AV1", + "Theora", + "MotionJPEG" + }; + return QString::fromUtf8(descriptions[int(c) + 1]); +} + +/*! \class QMediaDecoderInfo + + QMediaDecoderInfo describes the media formats supported for decoding + on the current platform. + + Qt Multimedia might be able to decode formats that are not listed + in the QMediaFormat::FileFormat, QMediaFormat::AudioCodec and QMediaFormat::VideoCodec enums. + + \sa QMediaFormat::canDecode() +*/ + +/*! + Returns a list of container formats that are supported for decoding by + Qt Multimedia. + + This does not imply that Qt can successfully decode the media file or + stream, as the audio or video codec used within the container might not + be supported. + */ +QList<QMediaFormat::FileFormat> QMediaDecoderInfo::supportedFileFormats() +{ + return QMediaPlatformIntegration::instance()->formatInfo()->decodableMediaContainers(); +} + +/*! + Returns a list of video codecs that are supported for decoding by + Qt Multimedia. + */ +QList<QMediaFormat::VideoCodec> QMediaDecoderInfo::supportedVideoCodecs() +{ + return QMediaPlatformIntegration::instance()->formatInfo()->decodableVideoCodecs(); +} + +/*! + Returns a list of audio codecs that are supported for decoding by + Qt Multimedia. + */ +QList<QMediaFormat::AudioCodec> QMediaDecoderInfo::supportedAudioCodecs() +{ + return QMediaPlatformIntegration::instance()->formatInfo()->decodableAudioCodecs(); +} + +/*! \class QMediaEncodecInfo + + QMediaEncoderInfo describes the media formats supported for + encoding on the current platform. + + \sa QMediaFormat::canEncode() +*/ + +/*! + Returns a list of container formats that are supported for encoding by + Qt Multimedia. + */ +QList<QMediaFormat::FileFormat> QMediaEncoderInfo::supportedFileFormats() +{ + return QMediaPlatformIntegration::instance()->formatInfo()->encodableMediaContainers(); +} + +/*! + Returns a list of video codecs that are supported for encoding by + Qt Multimedia. + */ +QList<QMediaFormat::VideoCodec> QMediaEncoderInfo::supportedVideoCodecs() +{ + return QMediaPlatformIntegration::instance()->formatInfo()->encodableVideoCodecs(); +} + +/*! + Returns a list of audio codecs that are supported for encoding by + Qt Multimedia. + */ +QList<QMediaFormat::AudioCodec> QMediaEncoderInfo::supportedAudioCodecs() +{ + return QMediaPlatformIntegration::instance()->formatInfo()->encodableAudioCodecs(); +} + +QT_END_NAMESPACE |