12 #include "../stdafx.h"
13 #include "../openttd.h"
14 #include "../driver.h"
16 #include "../core/alloc_func.hpp"
17 #include "../core/bitmath_func.hpp"
18 #include "../core/math_func.hpp"
23 #include "../safeguards.h"
27 static HWAVEOUT _waveout;
28 static WAVEHDR _wave_hdr[2];
30 static HANDLE _thread;
31 static DWORD _threadId;
34 static void PrepareHeader(WAVEHDR *hdr)
36 hdr->dwBufferLength = _bufsize * 4;
38 hdr->lpData = MallocT<char>(_bufsize * 4);
39 if (waveOutPrepareHeader(_waveout, hdr,
sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
throw "waveOutPrepareHeader failed";
42 static DWORD WINAPI SoundThread(LPVOID arg)
45 for (WAVEHDR *hdr = _wave_hdr; hdr !=
endof(_wave_hdr); hdr++) {
46 if ((hdr->dwFlags & WHDR_INQUEUE) != 0)
continue;
47 MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
48 if (waveOutWrite(_waveout, hdr,
sizeof(WAVEHDR)) != MMSYSERR_NOERROR) {
49 MessageBox(NULL, _T(
"Sounds are disabled until restart."), _T(
"waveOutWrite failed"), MB_ICONINFORMATION);
53 WaitForSingleObject(_event, INFINITE);
54 }
while (_waveout != NULL);
62 wfex.wFormatTag = WAVE_FORMAT_PCM;
64 wfex.wBitsPerSample = 16;
66 wfex.nBlockAlign = (wfex.nChannels * wfex.wBitsPerSample) / 8;
67 wfex.nAvgBytesPerSec = wfex.nSamplesPerSec * wfex.nBlockAlign;
71 _bufsize =
min(_bufsize, UINT16_MAX);
74 if (NULL == (_event = CreateEvent(NULL, FALSE, FALSE, NULL)))
throw "Failed to create event";
76 if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)_event, 0, CALLBACK_EVENT) != MMSYSERR_NOERROR)
throw "waveOutOpen failed";
78 MxInitialize(wfex.nSamplesPerSec);
80 PrepareHeader(&_wave_hdr[0]);
81 PrepareHeader(&_wave_hdr[1]);
83 if (NULL == (_thread = CreateThread(NULL, 8192, SoundThread, 0, 0, &_threadId)))
throw "Failed to create thread";
84 }
catch (
const char *
error) {
94 HWAVEOUT waveout = _waveout;
99 WaitForSingleObject(_thread, INFINITE);
102 waveOutReset(waveout);
103 waveOutUnprepareHeader(waveout, &_wave_hdr[0],
sizeof(WAVEHDR));
104 waveOutUnprepareHeader(waveout, &_wave_hdr[1],
sizeof(WAVEHDR));
105 waveOutClose(waveout);
107 CloseHandle(_thread);