tron@2186: /* $Id$ */
tron@2186: 
tron@2189: #include "../stdafx.h"
tron@2189: #include "../openttd.h"
tron@2189: #include "../driver.h"
tron@2189: #include "../functions.h"
tron@2189: #include "../mixer.h"
tron@2189: #include "win32_s.h"
tron@2174: #include <windows.h>
tron@2189: #include <mmsystem.h>
tron@2174: 
tron@2174: static HWAVEOUT _waveout;
tron@2174: static WAVEHDR _wave_hdr[2];
tron@2174: static int _bufsize;
tron@2174: 
tron@2174: static void PrepareHeader(WAVEHDR *hdr)
tron@2174: {
tron@2174: 	hdr->dwBufferLength = _bufsize * 4;
tron@2174: 	hdr->dwFlags = 0;
tron@2174: 	hdr->lpData = malloc(_bufsize * 4);
tron@2174: 	if (hdr->lpData == NULL ||
tron@2174: 			waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
tron@2174: 		error("waveOutPrepareHeader failed");
tron@2174: }
tron@2174: 
tron@2174: static void FillHeaders(void)
tron@2174: {
tron@2174: 	WAVEHDR *hdr;
tron@2174: 
tron@2174: 	for (hdr = _wave_hdr; hdr != endof(_wave_hdr); hdr++) {
tron@2174: 		if (!(hdr->dwFlags & WHDR_INQUEUE)) {
tron@2977: 			MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
tron@2174: 			if (waveOutWrite(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
tron@2174: 				error("waveOutWrite failed");
tron@2174: 		}
tron@2174: 	}
tron@2174: }
tron@2174: 
tron@2449: static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
tron@2174: 	DWORD dwParam1, DWORD dwParam2)
tron@2174: {
tron@2174: 	switch (uMsg) {
tron@2174: 		case WOM_DONE:
tron@2174: 			if (_waveout) FillHeaders();
tron@2174: 			break;
tron@2174: 
tron@2174: 		default:
tron@2174: 			break;
tron@2174: 	}
tron@2174: }
tron@2174: 
tron@2174: static const char *Win32SoundStart(const char* const* parm)
tron@2174: {
tron@2174: 	WAVEFORMATEX wfex;
tron@2174: 	int hz;
tron@2174: 
tron@2174: 	_bufsize = GetDriverParamInt(parm, "bufsize", 1024);
tron@2174: 	hz = GetDriverParamInt(parm, "hz", 11025);
tron@2174: 	wfex.wFormatTag = WAVE_FORMAT_PCM;
tron@2174: 	wfex.nChannels = 2;
tron@2174: 	wfex.nSamplesPerSec = hz;
tron@2174: 	wfex.nAvgBytesPerSec = hz * 2 * 2;
tron@2174: 	wfex.nBlockAlign = 4;
tron@2174: 	wfex.wBitsPerSample = 16;
tron@2449: 	if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)&waveOutProc, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
tron@2174: 		return "waveOutOpen failed";
tron@2174: 	PrepareHeader(&_wave_hdr[0]);
tron@2174: 	PrepareHeader(&_wave_hdr[1]);
tron@2174: 	FillHeaders();
tron@2174: 	return NULL;
tron@2174: }
tron@2174: 
tron@2174: static void Win32SoundStop(void)
tron@2174: {
tron@2174: 	HWAVEOUT waveout = _waveout;
tron@2174: 
tron@2174: 	_waveout = NULL;
tron@2174: 	waveOutReset(waveout);
tron@2174: 	waveOutUnprepareHeader(waveout, &_wave_hdr[0], sizeof(WAVEHDR));
tron@2174: 	waveOutUnprepareHeader(waveout, &_wave_hdr[1], sizeof(WAVEHDR));
tron@2174: 	waveOutClose(waveout);
tron@2174: }
tron@2174: 
tron@2174: const HalSoundDriver _win32_sound_driver = {
tron@2174: 	Win32SoundStart,
tron@2174: 	Win32SoundStop,
tron@2174: };