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| |
| #include "qmemoryvideobuffer_p.h" |
| |
| #include "qabstractvideobuffer_p.h" |
| #include <qbytearray.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QMemoryVideoBufferPrivate : public QAbstractVideoBufferPrivate |
| { |
| public: |
| QMemoryVideoBufferPrivate() |
| : bytesPerLine(0) |
| , mapMode(QAbstractVideoBuffer::NotMapped) |
| { |
| } |
| |
| int bytesPerLine; |
| QAbstractVideoBuffer::MapMode mapMode; |
| QByteArray data; |
| }; |
| |
| /*! |
| \class QMemoryVideoBuffer |
| \brief The QMemoryVideoBuffer class provides a system memory allocated video data buffer. |
| \internal |
| |
| QMemoryVideoBuffer is the default video buffer for allocating system memory. It may be used to |
| allocate memory for a QVideoFrame without implementing your own QAbstractVideoBuffer. |
| */ |
| |
| /*! |
| Constructs a video buffer with an image stride of \a bytesPerLine from a byte \a array. |
| */ |
| QMemoryVideoBuffer::QMemoryVideoBuffer(const QByteArray &array, int bytesPerLine) |
| : QAbstractVideoBuffer(*new QMemoryVideoBufferPrivate, NoHandle) |
| { |
| Q_D(QMemoryVideoBuffer); |
| |
| d->data = array; |
| d->bytesPerLine = bytesPerLine; |
| } |
| |
| /*! |
| Destroys a system memory allocated video buffer. |
| */ |
| QMemoryVideoBuffer::~QMemoryVideoBuffer() |
| { |
| } |
| |
| /*! |
| \reimp |
| */ |
| QAbstractVideoBuffer::MapMode QMemoryVideoBuffer::mapMode() const |
| { |
| return d_func()->mapMode; |
| } |
| |
| /*! |
| \reimp |
| */ |
| uchar *QMemoryVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine) |
| { |
| Q_D(QMemoryVideoBuffer); |
| |
| if (d->mapMode == NotMapped && d->data.size() && mode != NotMapped) { |
| d->mapMode = mode; |
| |
| if (numBytes) |
| *numBytes = d->data.size(); |
| |
| if (bytesPerLine) |
| *bytesPerLine = d->bytesPerLine; |
| |
| return reinterpret_cast<uchar *>(d->data.data()); |
| } else { |
| return nullptr; |
| } |
| } |
| |
| /*! |
| \reimp |
| */ |
| void QMemoryVideoBuffer::unmap() |
| { |
| d_func()->mapMode = NotMapped; |
| } |
| |
| QT_END_NAMESPACE |