51dbcca9a7
It is very likely Vista hasn't been working for years, but the
amount of users that use an OS that has been EoL for over 11 years
is very small, so reports happen rarely.
(cherry picked from commit b866e52b17)
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file win32_s.cpp Handling of sound for Windows. */
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#include "../stdafx.h"
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#include "../openttd.h"
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#include "../driver.h"
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#include "../mixer.h"
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#include "../core/alloc_func.hpp"
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#include "../core/bitmath_func.hpp"
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#include "../core/math_func.hpp"
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#include "win32_s.h"
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#include <windows.h>
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#include <mmsystem.h>
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#include <versionhelpers.h>
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#include "../os/windows/win32.h"
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#include "../thread.h"
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#include "../safeguards.h"
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static FSoundDriver_Win32 iFSoundDriver_Win32;
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static HWAVEOUT _waveout;
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static WAVEHDR _wave_hdr[2];
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static int _bufsize;
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static HANDLE _thread;
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static DWORD _threadId;
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static HANDLE _event;
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static void PrepareHeader(WAVEHDR *hdr)
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{
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hdr->dwBufferLength = _bufsize * 4;
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hdr->dwFlags = 0;
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hdr->lpData = MallocT<char>(_bufsize * 4);
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if (waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR) throw "waveOutPrepareHeader failed";
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}
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static DWORD WINAPI SoundThread(LPVOID)
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{
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SetCurrentThreadName("ottd:win-sound");
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do {
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for (WAVEHDR *hdr = _wave_hdr; hdr != endof(_wave_hdr); hdr++) {
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if ((hdr->dwFlags & WHDR_INQUEUE) != 0) continue;
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MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
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if (waveOutWrite(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR) {
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MessageBox(nullptr, L"Sounds are disabled until restart.", L"waveOutWrite failed", MB_ICONINFORMATION);
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return 0;
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}
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}
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WaitForSingleObject(_event, INFINITE);
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} while (_waveout != nullptr);
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return 0;
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}
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const char *SoundDriver_Win32::Start(const StringList &parm)
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{
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WAVEFORMATEX wfex;
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wfex.wFormatTag = WAVE_FORMAT_PCM;
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wfex.nChannels = 2;
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wfex.wBitsPerSample = 16;
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wfex.nSamplesPerSec = GetDriverParamInt(parm, "hz", 44100);
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wfex.nBlockAlign = (wfex.nChannels * wfex.wBitsPerSample) / 8;
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wfex.nAvgBytesPerSec = wfex.nSamplesPerSec * wfex.nBlockAlign;
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/* Limit buffer size to prevent overflows. */
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_bufsize = GetDriverParamInt(parm, "bufsize", 8192);
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_bufsize = std::min<int>(_bufsize, UINT16_MAX);
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try {
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if (nullptr == (_event = CreateEvent(nullptr, FALSE, FALSE, nullptr))) throw "Failed to create event";
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if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)_event, 0, CALLBACK_EVENT) != MMSYSERR_NOERROR) throw "waveOutOpen failed";
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MxInitialize(wfex.nSamplesPerSec);
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PrepareHeader(&_wave_hdr[0]);
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PrepareHeader(&_wave_hdr[1]);
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if (nullptr == (_thread = CreateThread(nullptr, 8192, SoundThread, 0, 0, &_threadId))) throw "Failed to create thread";
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} catch (const char *error) {
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this->Stop();
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return error;
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}
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return nullptr;
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}
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void SoundDriver_Win32::Stop()
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{
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HWAVEOUT waveout = _waveout;
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/* Stop the sound thread. */
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_waveout = nullptr;
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SignalObjectAndWait(_event, _thread, INFINITE, FALSE);
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/* Close the sound device. */
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waveOutReset(waveout);
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waveOutUnprepareHeader(waveout, &_wave_hdr[0], sizeof(WAVEHDR));
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waveOutUnprepareHeader(waveout, &_wave_hdr[1], sizeof(WAVEHDR));
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waveOutClose(waveout);
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CloseHandle(_thread);
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CloseHandle(_event);
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}
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