explicit WinsockInitialization(int major = 2, int minor = 2)
{
WSADATA wsaData = {0};
int rc = WSAStartup(MAKEWORD(major, minor), &wsaData);
if (rc != 0)
ThrowWin32Error(rc, "WSAStartup");
}
CAudio::CAudio(WORD channels, DWORD sample_rate, WORD bits_per_sample,
bool &_audioStart, bool &_videoStart, HANDLE &_hStartEvent)
: m_hWaveOut(NULL)
, m_dwStart(0)
, m_dwCur(0)
, m_dwEnd(0)
, m_dwWaveHdrIndex(0)
, m_dwCount(0)
, m_hDataEvent(NULL)
, m_hNotFullEvent(NULL)
, m_hNotEmptyEvent(NULL)
, m_hThread(NULL)
, m_bContinue(FALSE)
, m_bForce(FALSE)
, m_bAudioStart(_audioStart)
, m_bVideoStart(_videoStart)
, m_hStartEvent(_hStartEvent)
{
if (!_hStartEvent)ThrowWin32Error(CAudio::CVideo, ERROR_BAD_ARGUMENTS);
MMRESULT mmResult;
WAVEFORMATEX wfex = { WAVE_FORMAT_PCM,channels,sample_rate };
wfex.wBitsPerSample = bits_per_sample;
wfex.cbSize = sizeof(WAVEFORMATEX);
wfex.nBlockAlign = (wfex.wBitsPerSample >> 3)*wfex.nChannels;
wfex.nAvgBytesPerSec = wfex.nBlockAlign*wfex.nSamplesPerSec;
TestWin32Throw(m_hDataEvent = CreateEvent(NULL, FALSE, FALSE, NULL));
TestWin32Throw(m_hNotFullEvent = CreateEvent(NULL, FALSE, FALSE, NULL));
TestWin32Throw(m_hNotEmptyEvent = CreateEvent(NULL, FALSE, FALSE, NULL));
mmResult = waveOutOpen(&m_hWaveOut, WAVE_MAPPER, &wfex, (DWORD_PTR)waveOutProc, (DWORD_PTR)m_hDataEvent, CALLBACK_FUNCTION);
if (MMSYSERR_NOERROR != mmResult)throw mmResult;
ZeroMemory(m_cWaveHdr, sizeof m_cWaveHdr);
for (int i = 0; i < MAX_WAVE_COUNT; ++i)
m_cWaveHdr[i].dwUser = (DWORD_PTR)&m_dwCount;
m_bContinue = TRUE;
m_hThread = CreateThread(NULL, 0, ThreadProc, this, 0, NULL);
}
DWORD CALLBACK CAudio::ThreadProc(LPVOID lp)
{
if (nullptr == lp)ThrowWin32Error(CAudio::ThreadProc, ERROR_BAD_ARGUMENTS);
CAudio * audio = static_cast<CAudio*>(lp);
return audio->AudioThreadProc();
}
void CheckHr(HRESULT hr)
{
if (FAILED(hr))
ThrowWin32Error(hr);
}
void ThrowLastError(const std::string& what)
{
ThrowWin32Error(GetLastError(), what);
}
