mirror of https://github.com/axmolengine/axmol.git
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2000 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#endif
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#include <atomic>
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#include <csignal>
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#include <cstdarg>
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#include <cstdio>
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#include <cstring>
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#include <mutex>
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "alcontext.h"
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#include "almalloc.h"
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#include "core/except.h"
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#include "core/logging.h"
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#include "opthelpers.h"
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#include "vector.h"
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bool TrapALError{false};
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void ALCcontext::setError(ALenum errorCode, const char *msg, ...)
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{
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auto message = al::vector<char>(256);
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va_list args, args2;
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va_start(args, msg);
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va_copy(args2, args);
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int msglen{std::vsnprintf(message.data(), message.size(), msg, args)};
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if(msglen >= 0 && static_cast<size_t>(msglen) >= message.size())
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{
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message.resize(static_cast<size_t>(msglen) + 1u);
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msglen = std::vsnprintf(message.data(), message.size(), msg, args2);
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}
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va_end(args2);
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va_end(args);
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if(msglen >= 0) msg = message.data();
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else msg = "<internal error constructing message>";
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WARN("Error generated on context %p, code 0x%04x, \"%s\"\n",
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decltype(std::declval<void*>()){this}, errorCode, msg);
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if(TrapALError)
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{
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#ifdef _WIN32
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/* DebugBreak will cause an exception if there is no debugger */
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if(IsDebuggerPresent())
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DebugBreak();
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#elif defined(SIGTRAP)
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raise(SIGTRAP);
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#endif
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}
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ALenum curerr{AL_NO_ERROR};
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mLastError.compare_exchange_strong(curerr, errorCode);
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}
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AL_API ALenum AL_APIENTRY alGetError(void)
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START_API_FUNC
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{
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ContextRef context{GetContextRef()};
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if UNLIKELY(!context)
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{
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constexpr ALenum deferror{AL_INVALID_OPERATION};
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WARN("Querying error state on null context (implicitly 0x%04x)\n", deferror);
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if(TrapALError)
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{
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#ifdef _WIN32
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if(IsDebuggerPresent())
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DebugBreak();
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#elif defined(SIGTRAP)
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raise(SIGTRAP);
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#endif
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}
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return deferror;
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}
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return context->mLastError.exchange(AL_NO_ERROR);
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}
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END_API_FUNC
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