7199b7b5dd
Interface and callback api added for Videodecoder support. Should be able to construct any format videodecoder using only the given interface. GSoC 2018 project.
313 lines
11 KiB
Python
313 lines
11 KiB
Python
"""Functions used to generate source files during build time
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All such functions are invoked in a subprocess on Windows to prevent build flakiness.
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"""
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import json
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from platform_methods import subprocess_main
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def _spaced(e):
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return e if e[-1] == '*' else e + ' '
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def _build_gdnative_api_struct_header(api):
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gdnative_api_init_macro = [
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'\textern const godot_gdnative_core_api_struct *_gdnative_wrapper_api_struct;'
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]
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for ext in api['extensions']:
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name = ext['name']
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gdnative_api_init_macro.append(
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'\textern const godot_gdnative_ext_{0}_api_struct *_gdnative_wrapper_{0}_api_struct;'.format(name))
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gdnative_api_init_macro.append('\t_gdnative_wrapper_api_struct = options->api_struct;')
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gdnative_api_init_macro.append('\tfor (unsigned int i = 0; i < _gdnative_wrapper_api_struct->num_extensions; i++) { ')
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gdnative_api_init_macro.append('\t\tswitch (_gdnative_wrapper_api_struct->extensions[i]->type) {')
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for ext in api['extensions']:
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name = ext['name']
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gdnative_api_init_macro.append(
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'\t\t\tcase GDNATIVE_EXT_%s:' % ext['type'])
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gdnative_api_init_macro.append(
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'\t\t\t\t_gdnative_wrapper_{0}_api_struct = (godot_gdnative_ext_{0}_api_struct *)'
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' _gdnative_wrapper_api_struct->extensions[i];'.format(name))
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gdnative_api_init_macro.append('\t\t\t\tbreak;')
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gdnative_api_init_macro.append('\t\t}')
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gdnative_api_init_macro.append('\t}')
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out = [
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'/* THIS FILE IS GENERATED DO NOT EDIT */',
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'#ifndef GODOT_GDNATIVE_API_STRUCT_H',
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'#define GODOT_GDNATIVE_API_STRUCT_H',
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'',
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'#include <gdnative/gdnative.h>',
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'#include <android/godot_android.h>',
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'#include <arvr/godot_arvr.h>',
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'#include <nativescript/godot_nativescript.h>',
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'#include <pluginscript/godot_pluginscript.h>',
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'#include <videodecoder/godot_videodecoder.h>',
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'',
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'#define GDNATIVE_API_INIT(options) do { \\\n' + ' \\\n'.join(gdnative_api_init_macro) + ' \\\n } while (0)',
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'',
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'#ifdef __cplusplus',
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'extern "C" {',
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'#endif',
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'',
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'enum GDNATIVE_API_TYPES {',
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'\tGDNATIVE_' + api['core']['type'] + ','
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]
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for ext in api['extensions']:
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out += ['\tGDNATIVE_EXT_' + ext['type'] + ',']
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out += ['};', '']
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def generate_extension_struct(name, ext, include_version=True):
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ret_val = []
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if ext['next']:
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ret_val += generate_extension_struct(name, ext['next'])
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ret_val += [
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'typedef struct godot_gdnative_ext_' + name + ('' if not include_version else ('_{0}_{1}'.format(ext['version']['major'], ext['version']['minor']))) + '_api_struct {',
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'\tunsigned int type;',
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'\tgodot_gdnative_api_version version;',
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'\tconst godot_gdnative_api_struct *next;'
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]
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for funcdef in ext['api']:
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args = ', '.join(['%s%s' % (_spaced(t), n) for t, n in funcdef['arguments']])
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ret_val.append('\t%s(*%s)(%s);' % (_spaced(funcdef['return_type']), funcdef['name'], args))
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ret_val += ['} godot_gdnative_ext_' + name + ('' if not include_version else ('_{0}_{1}'.format(ext['version']['major'], ext['version']['minor']))) + '_api_struct;', '']
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return ret_val
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def generate_core_extension_struct(core):
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ret_val = []
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if core['next']:
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ret_val += generate_core_extension_struct(core['next'])
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ret_val += [
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'typedef struct godot_gdnative_core_' + ('{0}_{1}'.format(core['version']['major'], core['version']['minor'])) + '_api_struct {',
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'\tunsigned int type;',
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'\tgodot_gdnative_api_version version;',
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'\tconst godot_gdnative_api_struct *next;',
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]
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for funcdef in core['api']:
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args = ', '.join(['%s%s' % (_spaced(t), n) for t, n in funcdef['arguments']])
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ret_val.append('\t%s(*%s)(%s);' % (_spaced(funcdef['return_type']), funcdef['name'], args))
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ret_val += ['} godot_gdnative_core_' + '{0}_{1}'.format(core['version']['major'], core['version']['minor']) + '_api_struct;', '']
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return ret_val
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for ext in api['extensions']:
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name = ext['name']
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out += generate_extension_struct(name, ext, False)
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if api['core']['next']:
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out += generate_core_extension_struct(api['core']['next'])
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out += [
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'typedef struct godot_gdnative_core_api_struct {',
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'\tunsigned int type;',
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'\tgodot_gdnative_api_version version;',
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'\tconst godot_gdnative_api_struct *next;',
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'\tunsigned int num_extensions;',
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'\tconst godot_gdnative_api_struct **extensions;',
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]
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for funcdef in api['core']['api']:
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args = ', '.join(['%s%s' % (_spaced(t), n) for t, n in funcdef['arguments']])
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out.append('\t%s(*%s)(%s);' % (_spaced(funcdef['return_type']), funcdef['name'], args))
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out += [
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'} godot_gdnative_core_api_struct;',
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'',
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'#ifdef __cplusplus',
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'}',
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'#endif',
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'',
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'#endif // GODOT_GDNATIVE_API_STRUCT_H',
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''
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]
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return '\n'.join(out)
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def _build_gdnative_api_struct_source(api):
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out = [
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'/* THIS FILE IS GENERATED DO NOT EDIT */',
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'',
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'#include <gdnative_api_struct.gen.h>',
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''
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]
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def get_extension_struct_name(name, ext, include_version=True):
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return 'godot_gdnative_ext_' + name + ('' if not include_version else ('_{0}_{1}'.format(ext['version']['major'], ext['version']['minor']))) + '_api_struct'
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def get_extension_struct_instance_name(name, ext, include_version=True):
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return 'api_extension_' + name + ('' if not include_version else ('_{0}_{1}'.format(ext['version']['major'], ext['version']['minor']))) + '_struct'
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def get_extension_struct_definition(name, ext, include_version=True):
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ret_val = []
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if ext['next']:
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ret_val += get_extension_struct_definition(name, ext['next'])
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ret_val += [
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'extern const ' + get_extension_struct_name(name, ext, include_version) + ' ' + get_extension_struct_instance_name(name, ext, include_version) + ' = {',
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'\tGDNATIVE_EXT_' + ext['type'] + ',',
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'\t{' + str(ext['version']['major']) + ', ' + str(ext['version']['minor']) + '},',
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'\t' + ('NULL' if not ext['next'] else ('(const godot_gdnative_api_struct *)&' + get_extension_struct_instance_name(name, ext['next']))) + ','
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]
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for funcdef in ext['api']:
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ret_val.append('\t%s,' % funcdef['name'])
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ret_val += ['};\n']
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return ret_val
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def get_core_struct_definition(core):
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ret_val = []
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if core['next']:
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ret_val += get_core_struct_definition(core['next'])
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ret_val += [
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'extern const godot_gdnative_core_' + ('{0}_{1}_api_struct api_{0}_{1}'.format(core['version']['major'], core['version']['minor'])) + ' = {',
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'\tGDNATIVE_' + core['type'] + ',',
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'\t{' + str(core['version']['major']) + ', ' + str(core['version']['minor']) + '},',
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'\t' + ('NULL' if not core['next'] else ('(const godot_gdnative_api_struct *)& api_{0}_{1}'.format(core['version']['major'], core['version']['minor']))) + ','
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]
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for funcdef in core['api']:
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ret_val.append('\t%s,' % funcdef['name'])
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ret_val += ['};\n']
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return ret_val
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for ext in api['extensions']:
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name = ext['name']
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out += get_extension_struct_definition(name, ext, False)
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out += ['', 'const godot_gdnative_api_struct *gdnative_extensions_pointers[] = {']
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for ext in api['extensions']:
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name = ext['name']
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out += ['\t(godot_gdnative_api_struct *)&api_extension_' + name + '_struct,']
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out += ['};\n']
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if api['core']['next']:
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out += get_core_struct_definition(api['core']['next'])
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out += [
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'extern const godot_gdnative_core_api_struct api_struct = {',
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'\tGDNATIVE_' + api['core']['type'] + ',',
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'\t{' + str(api['core']['version']['major']) + ', ' + str(api['core']['version']['minor']) + '},',
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'\tNULL,',
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'\t' + str(len(api['extensions'])) + ',',
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'\tgdnative_extensions_pointers,',
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]
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for funcdef in api['core']['api']:
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out.append('\t%s,' % funcdef['name'])
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out.append('};\n')
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return '\n'.join(out)
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def build_gdnative_api_struct(target, source, env):
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with open(source[0], 'r') as fd:
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api = json.load(fd)
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header, source = target
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with open(header, 'w') as fd:
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fd.write(_build_gdnative_api_struct_header(api))
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with open(source, 'w') as fd:
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fd.write(_build_gdnative_api_struct_source(api))
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def _build_gdnative_wrapper_code(api):
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out = [
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'/* THIS FILE IS GENERATED DO NOT EDIT */',
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'',
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'#include <gdnative/gdnative.h>',
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'#include <nativescript/godot_nativescript.h>',
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'#include <pluginscript/godot_pluginscript.h>',
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'#include <arvr/godot_arvr.h>',
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'#include <videodecoder/godot_videodecoder.h>',
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'',
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'#include <gdnative_api_struct.gen.h>',
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'',
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'#ifdef __cplusplus',
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'extern "C" {',
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'#endif',
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'',
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'godot_gdnative_core_api_struct *_gdnative_wrapper_api_struct = 0;',
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]
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for ext in api['extensions']:
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name = ext['name']
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out.append('godot_gdnative_ext_' + name + '_api_struct *_gdnative_wrapper_' + name + '_api_struct = 0;')
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out += ['']
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for funcdef in api['core']['api']:
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args = ', '.join(['%s%s' % (_spaced(t), n) for t, n in funcdef['arguments']])
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out.append('%s%s(%s) {' % (_spaced(funcdef['return_type']), funcdef['name'], args))
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args = ', '.join(['%s' % n for t, n in funcdef['arguments']])
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return_line = '\treturn ' if funcdef['return_type'] != 'void' else '\t'
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return_line += '_gdnative_wrapper_api_struct->' + funcdef['name'] + '(' + args + ');'
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out.append(return_line)
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out.append('}')
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out.append('')
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for ext in api['extensions']:
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name = ext['name']
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for funcdef in ext['api']:
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args = ', '.join(['%s%s' % (_spaced(t), n) for t, n in funcdef['arguments']])
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out.append('%s%s(%s) {' % (_spaced(funcdef['return_type']), funcdef['name'], args))
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args = ', '.join(['%s' % n for t, n in funcdef['arguments']])
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return_line = '\treturn ' if funcdef['return_type'] != 'void' else '\t'
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return_line += '_gdnative_wrapper_' + name + '_api_struct->' + funcdef['name'] + '(' + args + ');'
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out.append(return_line)
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out.append('}')
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out.append('')
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out += [
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'#ifdef __cplusplus',
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'}',
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'#endif'
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]
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return '\n'.join(out)
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def build_gdnative_wrapper_code(target, source, env):
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with open(source[0], 'r') as fd:
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api = json.load(fd)
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wrapper_file = target[0]
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with open(wrapper_file, 'w') as fd:
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fd.write(_build_gdnative_wrapper_code(api))
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if __name__ == '__main__':
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subprocess_main(globals())
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