51 lines
2.4 KiB
Cython
51 lines
2.4 KiB
Cython
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cdef extern from "Python.h":
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###########################################################################
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# MemoryView Objects
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###########################################################################
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# A memoryview object exposes the C level buffer interface as a Python
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# object which can then be passed around like any other object
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object PyMemoryView_FromObject(object obj)
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# Return value: New reference.
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# Create a memoryview object from an object that provides the buffer
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# interface. If obj supports writable buffer exports, the memoryview object
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# will be read/write, otherwise it may be either read-only or read/write at
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# the discretion of the exporter.
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object PyMemoryView_FromMemory(char *mem, Py_ssize_t size, int flags)
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# Return value: New reference.
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# Create a memoryview object using mem as the underlying buffer. flags can
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# be one of PyBUF_READ or PyBUF_WRITE.
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# New in version 3.3.
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object PyMemoryView_FromBuffer(Py_buffer *view)
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# Return value: New reference.
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# Create a memoryview object wrapping the given buffer structure view. For
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# simple byte buffers, PyMemoryView_FromMemory() is the preferred function.
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object PyMemoryView_GetContiguous(object obj,
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int buffertype,
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char order)
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# Return value: New reference.
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# Create a memoryview object to a contiguous chunk of memory (in either ‘C’
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# or ‘F’ortran order) from an object that defines the buffer interface. If
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# memory is contiguous, the memoryview object points to the original
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# memory. Otherwise, a copy is made and the memoryview points to a new
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# bytes object.
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bint PyMemoryView_Check(object obj)
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# Return true if the object obj is a memoryview object. It is not currently
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# allowed to create subclasses of memoryview.
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Py_buffer *PyMemoryView_GET_BUFFER(object mview)
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# Return a pointer to the memoryview’s private copy of the exporter’s
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# buffer. mview must be a memoryview instance; this macro doesn’t check its
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# type, you must do it yourself or you will risk crashes.
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Py_buffer *PyMemoryView_GET_BASE(object mview)
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# Return either a pointer to the exporting object that the memoryview is
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# based on or NULL if the memoryview has been created by one of the
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# functions PyMemoryView_FromMemory() or PyMemoryView_FromBuffer(). mview
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# must be a memoryview instance.
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