示例#1
0
static DWORD WINAPI SoundThread(LPVOID arg)
{
	do {
		for (WAVEHDR *hdr = _wave_hdr; hdr != endof(_wave_hdr); hdr++) {
			if ((hdr->dwFlags & WHDR_INQUEUE) != 0) continue;
			MxMixSamples(hdr->lpData, hdr->dwBufferLength / 4);
			if (waveOutWrite(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR) {
				MessageBox(NULL, _T("Sounds are disabled until restart."), _T("waveOutWrite failed"), MB_ICONINFORMATION);
				return 0;
			}
		}
		WaitForSingleObject(_event, INFINITE);
	} while (_waveout != NULL);

	return 0;
}
void SoundDriver_Allegro::MainLoop()
{
	/* We haven't opened a stream yet */
	if (_stream == NULL) return;

	void *data = get_audio_stream_buffer(_stream);
	/* We don't have to fill the stream yet */
	if (data == NULL) return;

	/* Mix the samples */
	MxMixSamples(data, _buffer_size);

	/* Allegro sound is always unsigned, so we need to correct that */
	uint16 *snd = (uint16*)data;
	for (int i = 0; i < _buffer_size * 2; i++) snd[i] ^= 0x8000;

	/* Tell we've filled the stream */
	free_audio_stream_buffer(_stream);
}
示例#3
0
文件: sdl_s.cpp 项目: Voxar/OpenTTD
static void CDECL fill_sound_buffer(void *userdata, Uint8 *stream, int len)
{
    MxMixSamples(stream, len / 4);
}