KIKIMR-19287: add task_stats_drawing script

1 files changed, 777 insertions, 0 deletions

diff --git a/contrib/python/matplotlib/py2/src/_backend_agg_wrapper.cpp b/contrib/python/matplotlib/py2/src/_backend_agg_wrapper.cpp
new file mode 100644
index 0000000000..ea6c7b1267
--- /dev/null
+++ b/contrib/python/matplotlib/py2/src/_backend_agg_wrapper.cpp
@@ -0,0 +1,777 @@
+#include "mplutils.h"
+#include "py_converters.h"
+#include "_backend_agg.h"
+
+typedef struct
+{
+    PyObject_HEAD
+    RendererAgg *x;
+    Py_ssize_t shape[3];
+    Py_ssize_t strides[3];
+    Py_ssize_t suboffsets[3];
+} PyRendererAgg;
+
+typedef struct
+{
+    PyObject_HEAD
+    BufferRegion *x;
+    Py_ssize_t shape[3];
+    Py_ssize_t strides[3];
+    Py_ssize_t suboffsets[3];
+} PyBufferRegion;
+
+
+/**********************************************************************
+ * BufferRegion
+ * */
+
+static PyObject *PyBufferRegion_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyBufferRegion *self;
+    self = (PyBufferRegion *)type->tp_alloc(type, 0);
+    self->x = NULL;
+    return (PyObject *)self;
+}
+
+static void PyBufferRegion_dealloc(PyBufferRegion *self)
+{
+    delete self->x;
+    Py_TYPE(self)->tp_free((PyObject *)self);
+}
+
+static PyObject *PyBufferRegion_to_string(PyBufferRegion *self, PyObject *args, PyObject *kwds)
+{
+    return PyBytes_FromStringAndSize((const char *)self->x->get_data(),
+                                     self->x->get_height() * self->x->get_stride());
+}
+
+/* TODO: This doesn't seem to be used internally.  Remove? */
+
+static PyObject *PyBufferRegion_set_x(PyBufferRegion *self, PyObject *args, PyObject *kwds)
+{
+    int x;
+    if (!PyArg_ParseTuple(args, "i:set_x", &x)) {
+        return NULL;
+    }
+    self->x->get_rect().x1 = x;
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyBufferRegion_set_y(PyBufferRegion *self, PyObject *args, PyObject *kwds)
+{
+    int y;
+    if (!PyArg_ParseTuple(args, "i:set_y", &y)) {
+        return NULL;
+    }
+    self->x->get_rect().y1 = y;
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyBufferRegion_get_extents(PyBufferRegion *self, PyObject *args, PyObject *kwds)
+{
+    agg::rect_i rect = self->x->get_rect();
+
+    return Py_BuildValue("IIII", rect.x1, rect.y1, rect.x2, rect.y2);
+}
+
+static PyObject *PyBufferRegion_to_string_argb(PyBufferRegion *self, PyObject *args, PyObject *kwds)
+{
+    PyObject *bufobj;
+    uint8_t *buf;
+
+    bufobj = PyBytes_FromStringAndSize(NULL, self->x->get_height() * self->x->get_stride());
+    buf = (uint8_t *)PyBytes_AS_STRING(bufobj);
+
+    CALL_CPP_CLEANUP("to_string_argb", (self->x->to_string_argb(buf)), Py_DECREF(bufobj));
+
+    return bufobj;
+}
+
+int PyBufferRegion_get_buffer(PyBufferRegion *self, Py_buffer *buf, int flags)
+{
+    Py_INCREF(self);
+    buf->obj = (PyObject *)self;
+    buf->buf = self->x->get_data();
+    buf->len = self->x->get_width() * self->x->get_height() * 4;
+    buf->readonly = 0;
+    buf->format = (char *)"B";
+    buf->ndim = 3;
+    self->shape[0] = self->x->get_height();
+    self->shape[1] = self->x->get_width();
+    self->shape[2] = 4;
+    buf->shape = self->shape;
+    self->strides[0] = self->x->get_width() * 4;
+    self->strides[1] = 4;
+    self->strides[2] = 1;
+    buf->strides = self->strides;
+    buf->suboffsets = NULL;
+    buf->itemsize = 1;
+    buf->internal = NULL;
+
+    return 1;
+}
+
+static PyTypeObject PyBufferRegionType;
+
+static PyTypeObject *PyBufferRegion_init_type(PyObject *m, PyTypeObject *type)
+{
+    static PyMethodDef methods[] = {
+        { "to_string", (PyCFunction)PyBufferRegion_to_string, METH_NOARGS, NULL },
+        { "to_string_argb", (PyCFunction)PyBufferRegion_to_string_argb, METH_NOARGS, NULL },
+        { "set_x", (PyCFunction)PyBufferRegion_set_x, METH_VARARGS, NULL },
+        { "set_y", (PyCFunction)PyBufferRegion_set_y, METH_VARARGS, NULL },
+        { "get_extents", (PyCFunction)PyBufferRegion_get_extents, METH_NOARGS, NULL },
+        { NULL }
+    };
+
+    static PyBufferProcs buffer_procs;
+    memset(&buffer_procs, 0, sizeof(PyBufferProcs));
+    buffer_procs.bf_getbuffer = (getbufferproc)PyBufferRegion_get_buffer;
+
+    memset(type, 0, sizeof(PyTypeObject));
+    type->tp_name = "matplotlib.backends._backend_agg.BufferRegion";
+    type->tp_basicsize = sizeof(PyBufferRegion);
+    type->tp_dealloc = (destructor)PyBufferRegion_dealloc;
+    type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_NEWBUFFER;
+    type->tp_methods = methods;
+    type->tp_new = PyBufferRegion_new;
+    type->tp_as_buffer = &buffer_procs;
+
+    if (PyType_Ready(type) < 0) {
+        return NULL;
+    }
+
+    /* Don't need to add to module, since you can't create buffer
+       regions directly from Python */
+
+    return type;
+}
+
+/**********************************************************************
+ * RendererAgg
+ * */
+
+static PyObject *PyRendererAgg_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyRendererAgg *self;
+    self = (PyRendererAgg *)type->tp_alloc(type, 0);
+    self->x = NULL;
+    return (PyObject *)self;
+}
+
+static int PyRendererAgg_init(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    unsigned int width;
+    unsigned int height;
+    double dpi;
+    int debug = 0;
+
+    if (!PyArg_ParseTuple(args, "IId|i:RendererAgg", &width, &height, &dpi, &debug)) {
+        return -1;
+    }
+
+    if (dpi <= 0.0) {
+        PyErr_SetString(PyExc_ValueError, "dpi must be positive");
+        return -1;
+    }
+
+    if (width >= 1 << 16 || height >= 1 << 16) {
+        PyErr_Format(
+            PyExc_ValueError,
+            "Image size of %dx%d pixels is too large. "
+            "It must be less than 2^16 in each direction.",
+            width, height);
+        return -1;
+    }
+
+    CALL_CPP_INIT("RendererAgg", self->x = new RendererAgg(width, height, dpi))
+
+    return 0;
+}
+
+static void PyRendererAgg_dealloc(PyRendererAgg *self)
+{
+    delete self->x;
+    Py_TYPE(self)->tp_free((PyObject *)self);
+}
+
+static PyObject *PyRendererAgg_draw_path(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    py::PathIterator path;
+    agg::trans_affine trans;
+    PyObject *faceobj = NULL;
+    agg::rgba face;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&O&O&|O:draw_path",
+                          &convert_gcagg,
+                          &gc,
+                          &convert_path,
+                          &path,
+                          &convert_trans_affine,
+                          &trans,
+                          &faceobj)) {
+        return NULL;
+    }
+
+    if (!convert_face(faceobj, gc, &face)) {
+        return NULL;
+    }
+
+    CALL_CPP("draw_path", (self->x->draw_path(gc, path, trans, face)));
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyRendererAgg_draw_text_image(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    numpy::array_view<agg::int8u, 2> image;
+    double x;
+    double y;
+    double angle;
+    GCAgg gc;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&dddO&:draw_text_image",
+                          &image.converter_contiguous,
+                          &image,
+                          &x,
+                          &y,
+                          &angle,
+                          &convert_gcagg,
+                          &gc)) {
+        return NULL;
+    }
+
+    CALL_CPP("draw_text_image", (self->x->draw_text_image(gc, image, x, y, angle)));
+
+    Py_RETURN_NONE;
+}
+
+PyObject *PyRendererAgg_draw_markers(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    py::PathIterator marker_path;
+    agg::trans_affine marker_path_trans;
+    py::PathIterator path;
+    agg::trans_affine trans;
+    PyObject *faceobj = NULL;
+    agg::rgba face;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&O&O&O&O&|O:draw_markers",
+                          &convert_gcagg,
+                          &gc,
+                          &convert_path,
+                          &marker_path,
+                          &convert_trans_affine,
+                          &marker_path_trans,
+                          &convert_path,
+                          &path,
+                          &convert_trans_affine,
+                          &trans,
+                          &faceobj)) {
+        return NULL;
+    }
+
+    if (!convert_face(faceobj, gc, &face)) {
+        return NULL;
+    }
+
+    CALL_CPP("draw_markers",
+             (self->x->draw_markers(gc, marker_path, marker_path_trans, path, trans, face)));
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyRendererAgg_draw_image(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    double x;
+    double y;
+    numpy::array_view<agg::int8u, 3> image;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&ddO&:draw_image",
+                          &convert_gcagg,
+                          &gc,
+                          &x,
+                          &y,
+                          &image.converter_contiguous,
+                          &image)) {
+        return NULL;
+    }
+
+    x = mpl_round(x);
+    y = mpl_round(y);
+
+    gc.alpha = 1.0;
+    CALL_CPP("draw_image", (self->x->draw_image(gc, x, y, image)));
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+PyRendererAgg_draw_path_collection(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    agg::trans_affine master_transform;
+    PyObject *pathobj;
+    numpy::array_view<const double, 3> transforms;
+    numpy::array_view<const double, 2> offsets;
+    agg::trans_affine offset_trans;
+    numpy::array_view<const double, 2> facecolors;
+    numpy::array_view<const double, 2> edgecolors;
+    numpy::array_view<const double, 1> linewidths;
+    DashesVector dashes;
+    numpy::array_view<const uint8_t, 1> antialiaseds;
+    PyObject *ignored;
+    e_offset_position offset_position;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&O&OO&O&O&O&O&O&O&O&OO&:draw_path_collection",
+                          &convert_gcagg,
+                          &gc,
+                          &convert_trans_affine,
+                          &master_transform,
+                          &pathobj,
+                          &convert_transforms,
+                          &transforms,
+                          &convert_points,
+                          &offsets,
+                          &convert_trans_affine,
+                          &offset_trans,
+                          &convert_colors,
+                          &facecolors,
+                          &convert_colors,
+                          &edgecolors,
+                          &linewidths.converter,
+                          &linewidths,
+                          &convert_dashes_vector,
+                          &dashes,
+                          &antialiaseds.converter,
+                          &antialiaseds,
+                          &ignored,
+                          &convert_offset_position,
+                          &offset_position)) {
+        return NULL;
+    }
+
+    try
+    {
+        py::PathGenerator path(pathobj);
+
+        CALL_CPP("draw_path_collection",
+                 (self->x->draw_path_collection(gc,
+                                                master_transform,
+                                                path,
+                                                transforms,
+                                                offsets,
+                                                offset_trans,
+                                                facecolors,
+                                                edgecolors,
+                                                linewidths,
+                                                dashes,
+                                                antialiaseds,
+                                                offset_position)));
+    }
+    catch (const py::exception &)
+    {
+        return NULL;
+    }
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyRendererAgg_draw_quad_mesh(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    agg::trans_affine master_transform;
+    unsigned int mesh_width;
+    unsigned int mesh_height;
+    numpy::array_view<const double, 3> coordinates;
+    numpy::array_view<const double, 2> offsets;
+    agg::trans_affine offset_trans;
+    numpy::array_view<const double, 2> facecolors;
+    int antialiased;
+    numpy::array_view<const double, 2> edgecolors;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&O&IIO&O&O&O&iO&:draw_quad_mesh",
+                          &convert_gcagg,
+                          &gc,
+                          &convert_trans_affine,
+                          &master_transform,
+                          &mesh_width,
+                          &mesh_height,
+                          &coordinates.converter,
+                          &coordinates,
+                          &convert_points,
+                          &offsets,
+                          &convert_trans_affine,
+                          &offset_trans,
+                          &convert_colors,
+                          &facecolors,
+                          &antialiased,
+                          &convert_colors,
+                          &edgecolors)) {
+        return NULL;
+    }
+
+    CALL_CPP("draw_quad_mesh",
+             (self->x->draw_quad_mesh(gc,
+                                      master_transform,
+                                      mesh_width,
+                                      mesh_height,
+                                      coordinates,
+                                      offsets,
+                                      offset_trans,
+                                      facecolors,
+                                      antialiased,
+                                      edgecolors)));
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+PyRendererAgg_draw_gouraud_triangle(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    numpy::array_view<const double, 2> points;
+    numpy::array_view<const double, 2> colors;
+    agg::trans_affine trans;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&O&O&O&|O:draw_gouraud_triangle",
+                          &convert_gcagg,
+                          &gc,
+                          &points.converter,
+                          &points,
+                          &colors.converter,
+                          &colors,
+                          &convert_trans_affine,
+                          &trans)) {
+        return NULL;
+    }
+
+    if (points.dim(0) != 3 || points.dim(1) != 2) {
+        PyErr_Format(PyExc_ValueError,
+                     "points must be a 3x2 array, got %" NPY_INTP_FMT "x%" NPY_INTP_FMT,
+                     points.dim(0), points.dim(1));
+        return NULL;
+    }
+
+    if (colors.dim(0) != 3 || colors.dim(1) != 4) {
+        PyErr_Format(PyExc_ValueError,
+                     "colors must be a 3x4 array, got %" NPY_INTP_FMT "x%" NPY_INTP_FMT,
+                     colors.dim(0), colors.dim(1));
+        return NULL;
+    }
+
+
+    CALL_CPP("draw_gouraud_triangle", (self->x->draw_gouraud_triangle(gc, points, colors, trans)));
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+PyRendererAgg_draw_gouraud_triangles(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    GCAgg gc;
+    numpy::array_view<const double, 3> points;
+    numpy::array_view<const double, 3> colors;
+    agg::trans_affine trans;
+
+    if (!PyArg_ParseTuple(args,
+                          "O&O&O&O&|O:draw_gouraud_triangles",
+                          &convert_gcagg,
+                          &gc,
+                          &points.converter,
+                          &points,
+                          &colors.converter,
+                          &colors,
+                          &convert_trans_affine,
+                          &trans)) {
+        return NULL;
+    }
+
+    if (points.size() != 0 && (points.dim(1) != 3 || points.dim(2) != 2)) {
+        PyErr_Format(PyExc_ValueError,
+                     "points must be a Nx3x2 array, got %" NPY_INTP_FMT "x%" NPY_INTP_FMT "x%" NPY_INTP_FMT,
+                     points.dim(0), points.dim(1), points.dim(2));
+        return NULL;
+    }
+
+    if (colors.size() != 0 && (colors.dim(1) != 3 || colors.dim(2) != 4)) {
+        PyErr_Format(PyExc_ValueError,
+                     "colors must be a Nx3x4 array, got %" NPY_INTP_FMT "x%" NPY_INTP_FMT "x%" NPY_INTP_FMT,
+                     colors.dim(0), colors.dim(1), colors.dim(2));
+        return NULL;
+    }
+
+    if (points.size() != colors.size()) {
+        PyErr_Format(PyExc_ValueError,
+                     "points and colors arrays must be the same length, got %" NPY_INTP_FMT " and %" NPY_INTP_FMT,
+                     points.dim(0), colors.dim(0));
+        return NULL;
+    }
+
+    CALL_CPP("draw_gouraud_triangles", self->x->draw_gouraud_triangles(gc, points, colors, trans));
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyRendererAgg_tostring_rgb(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    PyObject *buffobj = NULL;
+
+    buffobj = PyBytes_FromStringAndSize(NULL, self->x->get_width() * self->x->get_height() * 3);
+    if (buffobj == NULL) {
+        return NULL;
+    }
+
+    CALL_CPP_CLEANUP("tostring_rgb",
+                     (self->x->tostring_rgb((uint8_t *)PyBytes_AS_STRING(buffobj))),
+                     Py_DECREF(buffobj));
+
+    return buffobj;
+}
+
+static PyObject *PyRendererAgg_tostring_argb(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    PyObject *buffobj = NULL;
+
+    buffobj = PyBytes_FromStringAndSize(NULL, self->x->get_width() * self->x->get_height() * 4);
+    if (buffobj == NULL) {
+        return NULL;
+    }
+
+    CALL_CPP_CLEANUP("tostring_argb",
+                     (self->x->tostring_argb((uint8_t *)PyBytes_AS_STRING(buffobj))),
+                     Py_DECREF(buffobj));
+
+    return buffobj;
+}
+
+static PyObject *PyRendererAgg_tostring_bgra(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    PyObject *buffobj = NULL;
+
+    buffobj = PyBytes_FromStringAndSize(NULL, self->x->get_width() * self->x->get_height() * 4);
+    if (buffobj == NULL) {
+        return NULL;
+    }
+
+    CALL_CPP_CLEANUP("to_string_bgra",
+                     (self->x->tostring_bgra((uint8_t *)PyBytes_AS_STRING(buffobj))),
+                     Py_DECREF(buffobj));
+
+    return buffobj;
+}
+
+static PyObject *
+PyRendererAgg_get_content_extents(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    agg::rect_i extents;
+
+    CALL_CPP("get_content_extents", (extents = self->x->get_content_extents()));
+
+    return Py_BuildValue(
+        "iiii", extents.x1, extents.y1, extents.x2 - extents.x1, extents.y2 - extents.y1);
+}
+
+static PyObject *PyRendererAgg_buffer_rgba(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+#if PY3K
+    return PyBytes_FromStringAndSize((const char *)self->x->pixBuffer,
+                                     self->x->get_width() * self->x->get_height() * 4);
+#else
+    return PyBuffer_FromReadWriteMemory(self->x->pixBuffer,
+                                        self->x->get_width() * self->x->get_height() * 4);
+#endif
+}
+
+int PyRendererAgg_get_buffer(PyRendererAgg *self, Py_buffer *buf, int flags)
+{
+    Py_INCREF(self);
+    buf->obj = (PyObject *)self;
+    buf->buf = self->x->pixBuffer;
+    buf->len = self->x->get_width() * self->x->get_height() * 4;
+    buf->readonly = 0;
+    buf->format = (char *)"B";
+    buf->ndim = 3;
+    self->shape[0] = self->x->get_height();
+    self->shape[1] = self->x->get_width();
+    self->shape[2] = 4;
+    buf->shape = self->shape;
+    self->strides[0] = self->x->get_width() * 4;
+    self->strides[1] = 4;
+    self->strides[2] = 1;
+    buf->strides = self->strides;
+    buf->suboffsets = NULL;
+    buf->itemsize = 1;
+    buf->internal = NULL;
+
+    return 1;
+}
+
+static PyObject *PyRendererAgg_clear(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    CALL_CPP("clear", self->x->clear());
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *PyRendererAgg_copy_from_bbox(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    agg::rect_d bbox;
+    BufferRegion *reg;
+    PyObject *regobj;
+
+    if (!PyArg_ParseTuple(args, "O&:copy_from_bbox", &convert_rect, &bbox)) {
+        return 0;
+    }
+
+    CALL_CPP("copy_from_bbox", (reg = self->x->copy_from_bbox(bbox)));
+
+    regobj = PyBufferRegion_new(&PyBufferRegionType, NULL, NULL);
+    ((PyBufferRegion *)regobj)->x = reg;
+
+    return regobj;
+}
+
+static PyObject *PyRendererAgg_restore_region(PyRendererAgg *self, PyObject *args, PyObject *kwds)
+{
+    PyBufferRegion *regobj;
+    int xx1 = 0, yy1 = 0, xx2 = 0, yy2 = 0, x = 0, y = 0;
+
+    if (!PyArg_ParseTuple(args,
+                          "O!|iiiiii:restore_region",
+                          &PyBufferRegionType,
+                          &regobj,
+                          &xx1,
+                          &yy1,
+                          &xx2,
+                          &yy2,
+                          &x,
+                          &y)) {
+        return 0;
+    }
+
+    if (PySequence_Size(args) == 1) {
+        CALL_CPP("restore_region", (self->x->restore_region(*(regobj->x))));
+    } else {
+        CALL_CPP("restore_region", self->x->restore_region(*(regobj->x), xx1, yy1, xx2, yy2, x, y));
+    }
+
+    Py_RETURN_NONE;
+}
+
+PyTypeObject PyRendererAggType;
+
+static PyTypeObject *PyRendererAgg_init_type(PyObject *m, PyTypeObject *type)
+{
+    static PyMethodDef methods[] = {
+        {"draw_path", (PyCFunction)PyRendererAgg_draw_path, METH_VARARGS, NULL},
+        {"draw_markers", (PyCFunction)PyRendererAgg_draw_markers, METH_VARARGS, NULL},
+        {"draw_text_image", (PyCFunction)PyRendererAgg_draw_text_image, METH_VARARGS, NULL},
+        {"draw_image", (PyCFunction)PyRendererAgg_draw_image, METH_VARARGS, NULL},
+        {"draw_path_collection", (PyCFunction)PyRendererAgg_draw_path_collection, METH_VARARGS, NULL},
+        {"draw_quad_mesh", (PyCFunction)PyRendererAgg_draw_quad_mesh, METH_VARARGS, NULL},
+        {"draw_gouraud_triangle", (PyCFunction)PyRendererAgg_draw_gouraud_triangle, METH_VARARGS, NULL},
+        {"draw_gouraud_triangles", (PyCFunction)PyRendererAgg_draw_gouraud_triangles, METH_VARARGS, NULL},
+
+        {"tostring_rgb", (PyCFunction)PyRendererAgg_tostring_rgb, METH_NOARGS, NULL},
+        {"tostring_argb", (PyCFunction)PyRendererAgg_tostring_argb, METH_NOARGS, NULL},
+        {"tostring_bgra", (PyCFunction)PyRendererAgg_tostring_bgra, METH_NOARGS, NULL},
+        {"get_content_extents", (PyCFunction)PyRendererAgg_get_content_extents, METH_NOARGS, NULL},
+        {"buffer_rgba", (PyCFunction)PyRendererAgg_buffer_rgba, METH_NOARGS, NULL},
+        {"clear", (PyCFunction)PyRendererAgg_clear, METH_NOARGS, NULL},
+
+        {"copy_from_bbox", (PyCFunction)PyRendererAgg_copy_from_bbox, METH_VARARGS, NULL},
+        {"restore_region", (PyCFunction)PyRendererAgg_restore_region, METH_VARARGS, NULL},
+        {NULL}
+    };
+
+    static PyBufferProcs buffer_procs;
+    memset(&buffer_procs, 0, sizeof(PyBufferProcs));
+    buffer_procs.bf_getbuffer = (getbufferproc)PyRendererAgg_get_buffer;
+
+    memset(type, 0, sizeof(PyTypeObject));
+    type->tp_name = "matplotlib.backends._backend_agg.RendererAgg";
+    type->tp_basicsize = sizeof(PyRendererAgg);
+    type->tp_dealloc = (destructor)PyRendererAgg_dealloc;
+    type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_NEWBUFFER;
+    type->tp_methods = methods;
+    type->tp_init = (initproc)PyRendererAgg_init;
+    type->tp_new = PyRendererAgg_new;
+    type->tp_as_buffer = &buffer_procs;
+
+    if (PyType_Ready(type) < 0) {
+        return NULL;
+    }
+
+    if (PyModule_AddObject(m, "RendererAgg", (PyObject *)type)) {
+        return NULL;
+    }
+
+    return type;
+}
+
+extern "C" {
+
+#if PY3K
+static struct PyModuleDef moduledef = {
+    PyModuleDef_HEAD_INIT,
+    "_backend_agg",
+    NULL,
+    0,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+};
+
+#define INITERROR return NULL
+
+PyMODINIT_FUNC PyInit__backend_agg(void)
+
+#else
+#define INITERROR return
+
+PyMODINIT_FUNC init_backend_agg(void)
+#endif
+
+{
+    PyObject *m;
+
+#if PY3K
+    m = PyModule_Create(&moduledef);
+#else
+    m = Py_InitModule3("_backend_agg", NULL, NULL);
+#endif
+
+    if (m == NULL) {
+        INITERROR;
+    }
+
+    import_array();
+
+    if (!PyRendererAgg_init_type(m, &PyRendererAggType)) {
+        INITERROR;
+    }
+
+    if (!PyBufferRegion_init_type(m, &PyBufferRegionType)) {
+        INITERROR;
+    }
+
+#if PY3K
+    return m;
+#endif
+}
+
+} // extern "C"