tron@2186: /* $Id$ */
tron@2186: 
tron@2189: #include "../stdafx.h"
tron@2189: #include "../openttd.h"
tron@2189: #include "../driver.h"
tron@2189: #include "../mixer.h"
rubidium@8626: #include "../core/alloc_func.hpp"
tron@2189: #include "win32_s.h"
truelight@0: #include <windows.h>
tron@2189: #include <mmsystem.h>
truelight@0: 
peter1138@7666: static FSoundDriver_Win32 iFSoundDriver_Win32;
peter1138@7666: 
truelight@0: static HWAVEOUT _waveout;
truelight@0: static WAVEHDR _wave_hdr[2];
truelight@0: static int _bufsize;
tron@2171: 
truelight@0: static void PrepareHeader(WAVEHDR *hdr)
truelight@0: {
tron@1468: 	hdr->dwBufferLength = _bufsize * 4;
truelight@0: 	hdr->dwFlags = 0;
KUDr@5860: 	hdr->lpData = MallocT<char>(_bufsize * 4);
tron@1468: 	if (hdr->lpData == NULL ||
tron@1468: 			waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
truelight@0: 		error("waveOutPrepareHeader failed");
truelight@0: }
truelight@0: 
rubidium@6573: static void FillHeaders()
truelight@0: {
truelight@0: 	WAVEHDR *hdr;
tron@1468: 
tron@1468: 	for (hdr = _wave_hdr; hdr != endof(_wave_hdr); hdr++) {
truelight@0: 		if (!(hdr->dwFlags & WHDR_INQUEUE)) {
tron@2977: 			MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
truelight@0: 			if (waveOutWrite(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
truelight@0: 				error("waveOutWrite failed");
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@2449: static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
tron@1468: 	DWORD dwParam1, DWORD dwParam2)
truelight@0: {
tron@1468: 	switch (uMsg) {
tron@1468: 		case WOM_DONE:
Darkvater@6314: 			if (_waveout != NULL) FillHeaders();
tron@1468: 			break;
Darkvater@6314: 		default: break;
truelight@0: 	}
truelight@0: }
truelight@0: 
peter1138@7666: const char *SoundDriver_Win32::Start(const char* const* parm)
truelight@0: {
truelight@0: 	WAVEFORMATEX wfex;
truelight@0: 	wfex.wFormatTag = WAVE_FORMAT_PCM;
truelight@0: 	wfex.nChannels = 2;
truelight@0: 	wfex.wBitsPerSample = 16;
Darkvater@6314: 	wfex.nSamplesPerSec = GetDriverParamInt(parm, "hz", 11025);
Darkvater@6314: 	wfex.nBlockAlign = (wfex.nChannels * wfex.wBitsPerSample) / 8;
Darkvater@6314: 	wfex.nAvgBytesPerSec = wfex.nSamplesPerSec * wfex.nBlockAlign;
Darkvater@6314: 
rubidium@9280: 	_bufsize = GetDriverParamInt(parm, "bufsize", 2048);
Darkvater@6314: 
tron@2449: 	if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)&waveOutProc, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
truelight@0: 		return "waveOutOpen failed";
Darkvater@6314: 
truelight@0: 	PrepareHeader(&_wave_hdr[0]);
truelight@0: 	PrepareHeader(&_wave_hdr[1]);
truelight@0: 	FillHeaders();
truelight@0: 	return NULL;
truelight@0: }
truelight@0: 
peter1138@7666: void SoundDriver_Win32::Stop()
truelight@0: {
truelight@0: 	HWAVEOUT waveout = _waveout;
tron@1468: 
truelight@0: 	_waveout = NULL;
truelight@0: 	waveOutReset(waveout);
truelight@0: 	waveOutUnprepareHeader(waveout, &_wave_hdr[0], sizeof(WAVEHDR));
truelight@0: 	waveOutUnprepareHeader(waveout, &_wave_hdr[1], sizeof(WAVEHDR));
truelight@0: 	waveOutClose(waveout);
truelight@0: }