53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
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#include "../../stdafx.h"
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#include "DSoundHelpers.h"
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/* Stuff shared between the two DirectSound drivers. */
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static IDirectSoundBuffer8 *CreateBuf(IDirectSound8 *ds8, WAVEFORMATEX *wavefmt, Uint32 buffersize, bool Hardware)
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{
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/* Try to create the secondary buffer */
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DSBUFFERDESC format;
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memset(&format, 0, sizeof(format));
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format.dwSize = sizeof(format);
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format.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_GLOBALFOCUS;
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if(Hardware)
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format.dwFlags |= DSBCAPS_LOCHARDWARE;
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format.dwBufferBytes = buffersize;
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format.dwReserved = 0;
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format.lpwfxFormat = wavefmt;
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IDirectSoundBuffer *sndbuf_buf;
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HRESULT hr = ds8->CreateSoundBuffer(&format, &sndbuf_buf, NULL);
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if (FAILED(hr))
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throw "CreateSoundBuffer failed";
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IDirectSoundBuffer8 *buf;
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sndbuf_buf->QueryInterface(IID_IDirectSoundBuffer8, (LPVOID*) &buf);
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return buf;
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}
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IDirectSoundBuffer8 *CreateBuf(IDirectSound8 *ds8,
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int channels, int samplerate, int bits,
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Uint32 buffersize, bool Hardware)
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{
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WAVEFORMATEX waveformat;
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memset(&waveformat, 0, sizeof(waveformat));
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waveformat.cbSize = sizeof(waveformat);
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waveformat.wFormatTag = WAVE_FORMAT_PCM;
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int bytes = bits/8;
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waveformat.wBitsPerSample = WORD(bits);
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waveformat.nChannels = WORD(channels);
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waveformat.nSamplesPerSec = DWORD(samplerate);
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waveformat.nBlockAlign = WORD(bytes*channels);
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waveformat.nAvgBytesPerSec = samplerate * bytes*channels;
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return CreateBuf(ds8, &waveformat, buffersize, Hardware);
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}
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/*
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* Copyright (c) 2002 by the person(s) listed below. All rights reserved.
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*
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* Glenn Maynard
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*/
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