1 files changed, 87 insertions, 0 deletions
diff --git a/src/sound/win32_s.c b/src/sound/win32_s.c
new file mode 100644
index 000000000..a39cee985
--- /dev/null
+++ b/src/sound/win32_s.c
@@ -0,0 +1,87 @@
+/* $Id$ */
+
+#include "../stdafx.h"
+#include "../openttd.h"
+#include "../driver.h"
+#include "../functions.h"
+#include "../mixer.h"
+#include "win32_s.h"
+#include <windows.h>
+#include <mmsystem.h>
+
+static HWAVEOUT _waveout;
+static WAVEHDR _wave_hdr[2];
+static int _bufsize;
+
+static void PrepareHeader(WAVEHDR *hdr)
+{
+	hdr->dwBufferLength = _bufsize * 4;
+	hdr->dwFlags = 0;
+	hdr->lpData = malloc(_bufsize * 4);
+	if (hdr->lpData == NULL ||
+			waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
+		error("waveOutPrepareHeader failed");
+}
+
+static void FillHeaders(void)
+{
+	WAVEHDR *hdr;
+
+	for (hdr = _wave_hdr; hdr != endof(_wave_hdr); hdr++) {
+		if (!(hdr->dwFlags & WHDR_INQUEUE)) {
+			MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
+			if (waveOutWrite(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
+				error("waveOutWrite failed");
+		}
+	}
+}
+
+static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
+	DWORD dwParam1, DWORD dwParam2)
+{
+	switch (uMsg) {
+		case WOM_DONE:
+			if (_waveout) FillHeaders();
+			break;
+
+		default:
+			break;
+	}
+}
+
+static const char *Win32SoundStart(const char* const* parm)
+{
+	WAVEFORMATEX wfex;
+	int hz;
+
+	_bufsize = GetDriverParamInt(parm, "bufsize", 1024);
+	hz = GetDriverParamInt(parm, "hz", 11025);
+	wfex.wFormatTag = WAVE_FORMAT_PCM;
+	wfex.nChannels = 2;
+	wfex.nSamplesPerSec = hz;
+	wfex.nAvgBytesPerSec = hz * 2 * 2;
+	wfex.nBlockAlign = 4;
+	wfex.wBitsPerSample = 16;
+	if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)&waveOutProc, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
+		return "waveOutOpen failed";
+	PrepareHeader(&_wave_hdr[0]);
+	PrepareHeader(&_wave_hdr[1]);
+	FillHeaders();
+	return NULL;
+}
+
+static void Win32SoundStop(void)
+{
+	HWAVEOUT waveout = _waveout;
+
+	_waveout = NULL;
+	waveOutReset(waveout);
+	waveOutUnprepareHeader(waveout, &_wave_hdr[0], sizeof(WAVEHDR));
+	waveOutUnprepareHeader(waveout, &_wave_hdr[1], sizeof(WAVEHDR));
+	waveOutClose(waveout);
+}
+
+const HalSoundDriver _win32_sound_driver = {
+	Win32SoundStart,
+	Win32SoundStop,
+};