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