Differential D5516 Diff 18119 source/blender/python/intern/bpy_app_handlers.c

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source/blender/python/intern/bpy_app_handlers.c

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	#include "RNA_access.h"	#include "RNA_access.h"
	#include "bpy_rna.h"	#include "bpy_rna.h"
	#include "bpy_app_handlers.h"	#include "bpy_app_handlers.h"

	#include "../generic/python_utildefines.h"	#include "../generic/python_utildefines.h"

	#include "BPY_extern.h"	#include "BPY_extern.h"

	void bpy_app_generic_callback(struct Main *main,	void bpy_app_generic_callback(struct Main main, struct ID id, void *arg);
	struct PointerRNA **pointers,
	const int num_pointers,
	void *arg);

	static PyTypeObject BlenderAppCbType;	static PyTypeObject BlenderAppCbType;

	static PyStructSequence_Field app_cb_info_fields[] = {	static PyStructSequence_Field app_cb_info_fields[] = {
	{(char )"frame_change_pre", (char )"on frame change for playback and rendering (before)"},	{(char )"frame_change_pre", (char )"on frame change for playback and rendering (before)"},
	{(char )"frame_change_post", (char )"on frame change for playback and rendering (after)"},	{(char )"frame_change_post", (char )"on frame change for playback and rendering (after)"},
	{(char )"render_pre", (char )"on render (before)"},	{(char )"render_pre", (char )"on render (before)"},
	{(char )"render_post", (char )"on render (after)"},	{(char )"render_post", (char )"on render (after)"},
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	}	}

	Py_DECREF(perm_id_str);	Py_DECREF(perm_id_str);
	}	}

	PyGILState_Release(gilstate);	PyGILState_Release(gilstate);
	}	}

	static PyObject choose_arguments(PyObject func, PyObject args_all, PyObject args_single)
	{
	if (!PyFunction_Check(func)) {
	return args_all;
	}
	PyCodeObject code = (PyCodeObject )PyFunction_GetCode(func);
	if (code->co_argcount == 1) {
	return args_single;
	}
	return args_all;
	}

	/* the actual callback - not necessarily called from py */	/* the actual callback - not necessarily called from py */
	void bpy_app_generic_callback(struct Main *UNUSED(main),	void bpy_app_generic_callback(struct Main UNUSED(main), struct ID id, void *arg)
	struct PointerRNA **pointers,
	const int num_pointers,
	void *arg)
	{	{
	PyObject *cb_list = py_cb_array[POINTER_AS_INT(arg)];	PyObject *cb_list = py_cb_array[POINTER_AS_INT(arg)];
	if (PyList_GET_SIZE(cb_list) > 0) {	if (PyList_GET_SIZE(cb_list) > 0) {
	PyGILState_STATE gilstate = PyGILState_Ensure();	PyGILState_STATE gilstate = PyGILState_Ensure();

	const int num_arguments = 2;	PyObject args = PyTuple_New(1); / save python creating each call */
	PyObject args_all = PyTuple_New(num_arguments); / save python creating each call */
	PyObject *args_single = PyTuple_New(1);
	PyObject *func;	PyObject *func;
	PyObject *ret;	PyObject *ret;
	Py_ssize_t pos;	Py_ssize_t pos;

	/* setup arguments */	/* setup arguments */
	for (int i = 0; i < num_pointers; ++i) {	if (id) {
	PyTuple_SET_ITEM(args_all, i, pyrna_struct_CreatePyObject(pointers[i]));	PointerRNA id_ptr;
	}	RNA_id_pointer_create(id, &id_ptr);
	for (int i = num_pointers; i < num_arguments; ++i) {	PyTuple_SET_ITEM(args, 0, pyrna_struct_CreatePyObject(&id_ptr));
	PyTuple_SET_ITEM(args_all, i, Py_INCREF_RET(Py_None));
	}

	if (num_pointers == 0) {
	PyTuple_SET_ITEM(args_single, 0, Py_INCREF_RET(Py_None));
	}	}
	else {	else {
	PyTuple_SET_ITEM(args_single, 0, pyrna_struct_CreatePyObject(pointers[0]));	PyTuple_SET_ITEM(args, 0, Py_INCREF_RET(Py_None));
	}	}

	/* Iterate the list and run the callbacks	/* Iterate the list and run the callbacks
	* note: don't store the list size since the scripts may remove themselves */	* note: don't store the list size since the scripts may remove themselves */
	for (pos = 0; pos < PyList_GET_SIZE(cb_list); pos++) {	for (pos = 0; pos < PyList_GET_SIZE(cb_list); pos++) {
	func = PyList_GET_ITEM(cb_list, pos);	func = PyList_GET_ITEM(cb_list, pos);
	PyObject *args = choose_arguments(func, args_all, args_single);
	ret = PyObject_Call(func, args, NULL);	ret = PyObject_Call(func, args, NULL);
	if (ret == NULL) {	if (ret == NULL) {
	/* Don't set last system variables because they might cause some	/* Don't set last system variables because they might cause some
	* dangling pointers to external render engines (when exception	* dangling pointers to external render engines (when exception
	* happens during rendering) which will break logic of render pipeline	* happens during rendering) which will break logic of render pipeline
	* which expects to be the only user of render engine when rendering	* which expects to be the only user of render engine when rendering
	* is finished.	* is finished.
	*/	*/
	PyErr_PrintEx(0);	PyErr_PrintEx(0);
	PyErr_Clear();	PyErr_Clear();
	}	}
	else {	else {
	Py_DECREF(ret);	Py_DECREF(ret);
	}	}
	}	}

	Py_DECREF(args_all);	Py_DECREF(args);
	Py_DECREF(args_single);

	PyGILState_Release(gilstate);	PyGILState_Release(gilstate);
	}	}
	}	}
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