| 1 | // Copyright (C) 2024 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #include "qaudiobufferoutput_p.h" |
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| 5 | #include "qmediaplayer.h" |
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| 6 | #include "qaudiobuffer.h" |
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| 7 | |
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| 8 | QT_BEGIN_NAMESPACE |
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| 9 | |
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| 10 | /*! |
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| 11 | \class QAudioBufferOutput |
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| 12 | \inmodule QtMultimedia |
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| 13 | \ingroup multimedia |
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| 14 | \ingroup multimedia_audio |
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| 15 | \since 6.8 |
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| 16 | |
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| 17 | \brief The QAudioBufferOutput class is used for capturing audio data provided by \l QMediaPlayer. |
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| 18 | |
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| 19 | QAudioBufferOutput can be set to QMediaPlayer in order to receive audio buffers |
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| 20 | decoded by the media player. The received audio data can be used for any |
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| 21 | processing or visualization. An audio level meter implementation can be seen |
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| 22 | in the widget based \l{Media Player Example}. |
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| 23 | |
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| 24 | QAudioBufferOutput is only supported with the FFmpeg backend. |
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| 25 | |
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| 26 | \sa QMediaPlayer, QMediaPlayer::setAudioBufferOutput, QAudioBuffer |
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| 27 | */ |
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| 28 | |
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| 29 | /*! |
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| 30 | Constructs a new QAudioBufferOutput object with \a parent. |
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| 31 | |
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| 32 | The audio format of output audio buffers will depend on |
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| 33 | the source media file and the inner audio decoder in \l QMediaPlayer. |
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| 34 | */ |
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| 35 | QAudioBufferOutput::QAudioBufferOutput(QObject *parent) |
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| 36 | : QObject(*new QAudioBufferOutputPrivate, parent) |
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| 37 | { |
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| 38 | } |
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| 39 | |
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| 40 | /*! |
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| 41 | Constructs a new QAudioBufferOutput object with audio \a format and \a parent. |
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| 42 | |
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| 43 | If the specified \a format is valid, it will be the format of output |
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| 44 | audio buffers. Otherwise, the format of output audio buffers |
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| 45 | will depend on the source media file and the inner audio decoder in \l QMediaPlayer. |
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| 46 | */ |
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| 47 | QAudioBufferOutput::QAudioBufferOutput(const QAudioFormat &format, QObject *parent) |
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| 48 | : QObject(*new QAudioBufferOutputPrivate(format), parent) |
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| 49 | { |
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| 50 | } |
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| 51 | |
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| 52 | /*! |
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| 53 | Destroys the audio buffer output object. |
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| 54 | */ |
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| 55 | QAudioBufferOutput::~QAudioBufferOutput() |
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| 56 | { |
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| 57 | Q_D(QAudioBufferOutput); |
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| 58 | |
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| 59 | if (d->mediaPlayer) |
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| 60 | d->mediaPlayer->setAudioBufferOutput(nullptr); |
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| 61 | } |
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| 62 | |
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| 63 | /*! |
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| 64 | Gets the audio format specified in the constructor. |
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| 65 | |
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| 66 | If the format is valid, it specifies the format of output oudio buffers. |
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| 67 | */ |
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| 68 | QAudioFormat QAudioBufferOutput::format() const |
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| 69 | { |
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| 70 | Q_D(const QAudioBufferOutput); |
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| 71 | return d->format; |
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| 72 | } |
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| 73 | |
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| 74 | /*! |
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| 75 | \fn void QAudioBufferOutput::audioBufferReceived(const QAudioBuffer &buffer) |
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| 76 | |
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| 77 | Signals that a new audio \a buffer has been received from \l QMediaPlayer. |
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| 78 | */ |
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| 79 | |
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| 80 | QT_END_NAMESPACE |
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| 81 | |
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| 82 | #include "moc_qaudiobufferoutput.cpp" |
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| 83 | |
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