Buffer Protocol
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int PyObject_AsCharBuffer(PyObject *obj, const char **buffer, Py_ssize_t *buffer_len)
- Returns a pointer to a read-only memory location usable as character-based
input. The obj argument must support the single-segment character buffer
interface. On success, returns 0, sets buffer to the memory location
and buffer_len to the buffer length. Returns -1 and sets a
TypeError on error.
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int PyObject_AsReadBuffer(PyObject *obj, const void **buffer, Py_ssize_t *buffer_len)
- Returns a pointer to a read-only memory location containing arbitrary data.
The obj argument must support the single-segment readable buffer
interface. On success, returns 0, sets buffer to the memory location
and buffer_len to the buffer length. Returns -1 and sets a
TypeError on error.
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int PyObject_CheckReadBuffer(PyObject *o)
- Returns 1 if o supports the single-segment readable buffer interface.
Otherwise returns 0.
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int PyObject_AsWriteBuffer(PyObject *obj, void **buffer, Py_ssize_t *buffer_len)
- Returns a pointer to a writable memory location. The obj argument must
support the single-segment, character buffer interface. On success,
returns 0, sets buffer to the memory location and buffer_len to the
buffer length. Returns -1 and sets a TypeError on error.