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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "LanguageHook.h"
#include "CallbackHandler.h"
#include "PyContext.h"
#include "ServiceBroker.h"
#include "XBPython.h"
#include "interfaces/legacy/AddonUtils.h"
#include "utils/log.h"
#include <mutex>
namespace XBMCAddon
{
namespace Python
{
static AddonClass::Ref<PythonLanguageHook> instance;
static CCriticalSection hooksMutex;
static std::map<PyInterpreterState*,AddonClass::Ref<PythonLanguageHook> > hooks;
// vtab instantiation
PythonLanguageHook::~PythonLanguageHook()
{
XBMC_TRACE;
XBMCAddon::LanguageHook::deallocating();
}
void PythonLanguageHook::MakePendingCalls()
{
XBMC_TRACE;
PythonCallbackHandler::makePendingCalls();
}
void PythonLanguageHook::DelayedCallOpen()
{
XBMC_TRACE;
PyGILLock::releaseGil();
}
void PythonLanguageHook::DelayedCallClose()
{
XBMC_TRACE;
PyGILLock::acquireGil();
}
void PythonLanguageHook::RegisterMe()
{
XBMC_TRACE;
std::unique_lock<CCriticalSection> lock(hooksMutex);
hooks[m_interp] = AddonClass::Ref<PythonLanguageHook>(this);
}
void PythonLanguageHook::UnregisterMe()
{
XBMC_TRACE;
std::unique_lock<CCriticalSection> lock(hooksMutex);
hooks.erase(m_interp);
}
static AddonClass::Ref<XBMCAddon::Python::PythonLanguageHook> g_languageHook;
// Ok ... we're going to get it even if it doesn't exist. If it doesn't exist then
// we're going to assume we're not in control of the interpreter. This (apparently)
// can be the case. E.g. Libspotify manages to call into a script using a ctypes
// extension but under the control of an Interpreter we know nothing about. In
// cases like this we're going to use a global interpreter
AddonClass::Ref<PythonLanguageHook> PythonLanguageHook::GetIfExists(PyInterpreterState* interp)
{
XBMC_TRACE;
std::unique_lock<CCriticalSection> lock(hooksMutex);
std::map<PyInterpreterState*,AddonClass::Ref<PythonLanguageHook> >::iterator iter = hooks.find(interp);
if (iter != hooks.end())
return iter->second;
// if we got here then we need to use the global one.
if (g_languageHook.isNull())
g_languageHook = new XBMCAddon::Python::PythonLanguageHook();
return g_languageHook;
}
bool PythonLanguageHook::IsAddonClassInstanceRegistered(AddonClass* obj)
{
for (const auto& iter : hooks)
{
if (iter.second->HasRegisteredAddonClassInstance(obj))
return true;
}
return false;
}
/**
* PythonCallbackHandler expects to be instantiated PER AddonClass instance
* that is to be used as a callback. This is why this cannot be instantiated
* once.
*
* There is an expectation that this method is called from the Python thread
* that instantiated an AddonClass that has the potential for a callback.
*
* See RetardedAsyncCallbackHandler for more details.
* See PythonCallbackHandler for more details
* See PythonCallbackHandler::PythonCallbackHandler for more details
*/
XBMCAddon::CallbackHandler* PythonLanguageHook::GetCallbackHandler()
{
XBMC_TRACE;
return new PythonCallbackHandler();
}
String PythonLanguageHook::GetAddonId()
{
XBMC_TRACE;
// Get a reference to the main module
// and global dictionary
PyObject* main_module = PyImport_AddModule("__main__");
if (!main_module)
{
CLog::Log(LOGDEBUG, "PythonLanguageHook::{}: __main__ returns null", __FUNCTION__);
return "";
}
PyObject* global_dict = PyModule_GetDict(main_module);
// Extract a reference to the function "func_name"
// from the global dictionary
PyObject* pyid = PyDict_GetItemString(global_dict, "__xbmcaddonid__");
if (pyid)
return PyUnicode_AsUTF8(pyid);
return "";
}
String PythonLanguageHook::GetAddonVersion()
{
XBMC_TRACE;
// Get a reference to the main module
// and global dictionary
PyObject* main_module = PyImport_AddModule("__main__");
if (!main_module)
{
CLog::Log(LOGDEBUG, "PythonLanguageHook::{}: __main__ returns null", __FUNCTION__);
return "";
}
PyObject* global_dict = PyModule_GetDict(main_module);
// Extract a reference to the function "func_name"
// from the global dictionary
PyObject* pyversion = PyDict_GetItemString(global_dict, "__xbmcapiversion__");
if (pyversion)
return PyUnicode_AsUTF8(pyversion);
return "";
}
long PythonLanguageHook::GetInvokerId()
{
XBMC_TRACE;
// Get a reference to the main module
// and global dictionary
PyObject* main_module = PyImport_AddModule("__main__");
if (!main_module)
{
CLog::Log(LOGDEBUG, "PythonLanguageHook::{}: __main__ returns null", __FUNCTION__);
return -1;
}
PyObject* global_dict = PyModule_GetDict(main_module);
// Extract a reference to the function "func_name"
// from the global dictionary
PyObject* pyid = PyDict_GetItemString(global_dict, "__xbmcinvokerid__");
if (pyid)
return PyLong_AsLong(pyid);
return -1;
}
void PythonLanguageHook::RegisterPlayerCallback(IPlayerCallback* player)
{
XBMC_TRACE;
CServiceBroker::GetXBPython().RegisterPythonPlayerCallBack(player);
}
void PythonLanguageHook::UnregisterPlayerCallback(IPlayerCallback* player)
{
XBMC_TRACE;
CServiceBroker::GetXBPython().UnregisterPythonPlayerCallBack(player);
}
void PythonLanguageHook::RegisterMonitorCallback(XBMCAddon::xbmc::Monitor* monitor)
{
XBMC_TRACE;
CServiceBroker::GetXBPython().RegisterPythonMonitorCallBack(monitor);
}
void PythonLanguageHook::UnregisterMonitorCallback(XBMCAddon::xbmc::Monitor* monitor)
{
XBMC_TRACE;
CServiceBroker::GetXBPython().UnregisterPythonMonitorCallBack(monitor);
}
bool PythonLanguageHook::WaitForEvent(CEvent& hEvent, unsigned int milliseconds)
{
XBMC_TRACE;
return CServiceBroker::GetXBPython().WaitForEvent(hEvent, milliseconds);
}
void PythonLanguageHook::RegisterAddonClassInstance(AddonClass* obj)
{
XBMC_TRACE;
std::unique_lock<CCriticalSection> l(*this);
obj->Acquire();
currentObjects.insert(obj);
}
void PythonLanguageHook::UnregisterAddonClassInstance(AddonClass* obj)
{
XBMC_TRACE;
std::unique_lock<CCriticalSection> l(*this);
if (currentObjects.erase(obj) > 0)
obj->Release();
}
bool PythonLanguageHook::HasRegisteredAddonClassInstance(AddonClass* obj)
{
XBMC_TRACE;
std::unique_lock<CCriticalSection> l(*this);
return currentObjects.find(obj) != currentObjects.end();
}
}
}
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