(original) (raw)

int PyObject_AsReadBuffer(PyObject *obj, const void **buffer, Py_ssize_t *buffer_len) { PyBufferProcs *pb; Py_buffer view; if (obj == NULL || buffer == NULL || buffer_len == NULL) { null_error(); return -1; } pb = obj->ob_type->tp_as_buffer; if (pb == NULL || pb->bf_getbuffer == NULL) { PyErr_SetString(PyExc_TypeError, "expected an object with a buffer interface"); return -1; } if ((*pb->bf_getbuffer)(obj, &view, PyBUF_SIMPLE)) return -1; *buffer = view.buf; *buffer_len = view.len; if (pb->bf_releasebuffer != NULL) (*pb->bf_releasebuffer)(obj, &view); Py_XDECREF(view.obj); return 0; }