我遇到了WASAPI问题。它不输出任何声音,我已经检查写入缓冲区的数据。WASAPI没有声音输出
因为它不输出任何声音,我没有任何想法找出问题。
在下面的代码中可能会有一些问题。
SoundStream::SoundStream() : writtenCursor(0), writeCursor(0), distroy(false)
{
IMMDeviceEnumerator * pEnumerator = nullptr;
HResult(CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL, IID_PPV_ARGS(&pEnumerator)));
IMMDevice * pDevice = nullptr;
HResult(pEnumerator->GetDefaultAudioEndpoint(eRender, eMultimedia, &pDevice));
SafeRelease(&pEnumerator);
HResult(pDevice->Activate(__uuidof(IAudioClient), CLSCTX_ALL, NULL, (void**)&pAudioClient));
SafeRelease(&pDevice);
WAVEFORMATEXTENSIBLE * pwfx = nullptr;
hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
REFERENCE_TIME hnsRequestedDuration = REFTIMES_PER_SEC * 2;
HResult(pAudioClient->GetMixFormat((WAVEFORMATEX**)&pwfx));
HResult(pAudioClient->Initialize(
AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
hnsRequestedDuration,
0,
(WAVEFORMATEX*)pwfx,
NULL));
pAudioClient->SetEventHandle(hEvent);
channel = (size_t)pwfx->Format.nChannels;
bits = (size_t)pwfx->Format.wBitsPerSample;
validBits = (size_t)pwfx->Samples.wValidBitsPerSample;
frequency = (size_t)pwfx->Format.nSamplesPerSec;
buffer.reshape({ 0, channel, bits >> 3 });
CoTaskMemFree(pwfx);
HResult(pAudioClient->GetBufferSize(&bufferFrameCount));
HResult(pAudioClient->Start());
if (pAudioClient)
{
thread = std::thread([&]()
{
this->Sync();
});
}
}
发布的代码不会向设备发送任何数据。 –
我用另一个函数做发送操作。 –