author | bjarni |
Mon, 09 Oct 2006 21:42:18 +0000 | |
changeset 4788 | 76ed308037b1 |
parent 2977 | 97c1c76b499a |
permissions | -rw-r--r-- |
2186 | 1 |
/* $Id$ */ |
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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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}; |