mirror of https://github.com/OpenTTD/OpenTTD
115 lines
3.5 KiB
C++
115 lines
3.5 KiB
C++
/*
|
|
* This file is part of OpenTTD.
|
|
* 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.
|
|
* 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.
|
|
* 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/>.
|
|
*/
|
|
|
|
/** @file win32_s.cpp Handling of sound for Windows. */
|
|
|
|
#include "../stdafx.h"
|
|
#include "../openttd.h"
|
|
#include "../driver.h"
|
|
#include "../mixer.h"
|
|
#include "../core/bitmath_func.hpp"
|
|
#include "../core/math_func.hpp"
|
|
#include "win32_s.h"
|
|
#include <windows.h>
|
|
#include <mmsystem.h>
|
|
#include <versionhelpers.h>
|
|
#include "../os/windows/win32.h"
|
|
#include "../thread.h"
|
|
|
|
#include "../safeguards.h"
|
|
|
|
static FSoundDriver_Win32 iFSoundDriver_Win32;
|
|
|
|
using HeaderDataPair = std::pair<WAVEHDR, std::unique_ptr<CHAR[]>>;
|
|
|
|
static HWAVEOUT _waveout;
|
|
static HeaderDataPair _wave_hdr[2];
|
|
static int _bufsize;
|
|
static HANDLE _thread;
|
|
static DWORD _threadId;
|
|
static HANDLE _event;
|
|
|
|
static void PrepareHeader(HeaderDataPair &hdr)
|
|
{
|
|
hdr.second = std::make_unique<CHAR[]>(_bufsize * 4);
|
|
hdr.first.dwBufferLength = _bufsize * 4;
|
|
hdr.first.dwFlags = 0;
|
|
hdr.first.lpData = hdr.second.get();
|
|
if (waveOutPrepareHeader(_waveout, &hdr.first, sizeof(WAVEHDR)) != MMSYSERR_NOERROR) throw "waveOutPrepareHeader failed";
|
|
}
|
|
|
|
static DWORD WINAPI SoundThread(LPVOID)
|
|
{
|
|
SetCurrentThreadName("ottd:win-sound");
|
|
|
|
do {
|
|
for (auto &hdr : _wave_hdr) {
|
|
if ((hdr.first.dwFlags & WHDR_INQUEUE) != 0) continue;
|
|
MxMixSamples(hdr.first.lpData, hdr.first.dwBufferLength / 4);
|
|
if (waveOutWrite(_waveout, &hdr.first, sizeof(WAVEHDR)) != MMSYSERR_NOERROR) {
|
|
MessageBox(nullptr, L"Sounds are disabled until restart.", L"waveOutWrite failed", MB_ICONINFORMATION);
|
|
return 0;
|
|
}
|
|
}
|
|
WaitForSingleObject(_event, INFINITE);
|
|
} while (_waveout != nullptr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
std::optional<std::string_view> SoundDriver_Win32::Start(const StringList &parm)
|
|
{
|
|
WAVEFORMATEX wfex;
|
|
wfex.wFormatTag = WAVE_FORMAT_PCM;
|
|
wfex.nChannels = 2;
|
|
wfex.wBitsPerSample = 16;
|
|
wfex.nSamplesPerSec = GetDriverParamInt(parm, "hz", 44100);
|
|
wfex.nBlockAlign = (wfex.nChannels * wfex.wBitsPerSample) / 8;
|
|
wfex.nAvgBytesPerSec = wfex.nSamplesPerSec * wfex.nBlockAlign;
|
|
|
|
/* Limit buffer size to prevent overflows. */
|
|
_bufsize = GetDriverParamInt(parm, "samples", 1024);
|
|
_bufsize = std::min<int>(_bufsize, UINT16_MAX);
|
|
|
|
try {
|
|
if (nullptr == (_event = CreateEvent(nullptr, FALSE, FALSE, nullptr))) throw "Failed to create event";
|
|
|
|
if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)_event, 0, CALLBACK_EVENT) != MMSYSERR_NOERROR) throw "waveOutOpen failed";
|
|
|
|
MxInitialize(wfex.nSamplesPerSec);
|
|
|
|
for (auto &hdr : _wave_hdr) PrepareHeader(hdr);
|
|
|
|
if (nullptr == (_thread = CreateThread(nullptr, 8192, SoundThread, 0, 0, &_threadId))) throw "Failed to create thread";
|
|
} catch (const char *error) {
|
|
this->Stop();
|
|
return error;
|
|
}
|
|
|
|
return std::nullopt;
|
|
}
|
|
|
|
void SoundDriver_Win32::Stop()
|
|
{
|
|
HWAVEOUT waveout = _waveout;
|
|
|
|
/* Stop the sound thread. */
|
|
_waveout = nullptr;
|
|
SignalObjectAndWait(_event, _thread, INFINITE, FALSE);
|
|
|
|
/* Close the sound device. */
|
|
waveOutReset(waveout);
|
|
for (auto &hdr : _wave_hdr) {
|
|
waveOutUnprepareHeader(waveout, &hdr.first, sizeof(WAVEHDR));
|
|
hdr.second.reset();
|
|
}
|
|
waveOutClose(waveout);
|
|
|
|
CloseHandle(_thread);
|
|
CloseHandle(_event);
|
|
}
|