本文整理汇总了C++中IAudioClient::GetCurrentPadding方法的典型用法代码示例。如果您正苦于以下问题：C++ IAudioClient::GetCurrentPadding方法的具体用法？C++ IAudioClient::GetCurrentPadding怎么用？C++ IAudioClient::GetCurrentPadding使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IAudioClient的用法示例。
在下文中一共展示了IAudioClient::GetCurrentPadding方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: getcurrentpadding_patch
HRESULT __stdcall getcurrentpadding_patch(IAudioClient* this_, UINT32* pNumPaddingFrames)
{
IAudioClient* proxy = get_duplicate(this_)->proxy;
DWORD_PTR* old_vftptr = swap_vtable(this_);
HRESULT hr = proxy->GetCurrentPadding(pNumPaddingFrames);
((DWORD_PTR**)this_)[0] = old_vftptr;
for(iaudioclient_duplicate* next = get_duplicate(this_)->next; next != NULL; next = next->next)
{
UINT32 pad;
next->proxy->GetCurrentPadding(&pad);
//assert(pad == *pNumPaddingFrames);
}
return hr;
}示例2: PlayAudio
void PlayAudio()
{
REFERENCE_TIME hnsRequestedDuration = REFTIMES_PER_SEC; // microseconds, so this is 1 seconds
REFERENCE_TIME hnsActualDuration;
HRESULT hr;
IMMDeviceEnumerator *pEnumerator = NULL;
IMMDevice *pDevice = NULL;
IAudioClient *pAudioClient = NULL;
IAudioRenderClient *pRenderClient = NULL;
WAVEFORMATEX *pwfx = NULL;
UINT32 bufferFrameCount;
UINT32 numFramesAvailable;
UINT32 numFramesPadding;
BYTE *pData;
DWORD flags = 0;
hr = CoCreateInstance(CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, IID_IMMDeviceEnumerator, (void**)&pEnumerator);
EXIT_ON_ERROR(hr);
hr = pEnumerator->GetDefaultAudioEndpoint(
eRender, eConsole, &pDevice);
EXIT_ON_ERROR(hr);
hr = pDevice->Activate(
IID_IAudioClient, CLSCTX_ALL,
NULL, (void**)&pAudioClient);
EXIT_ON_ERROR(hr);
hr = pAudioClient->GetMixFormat(&pwfx);
EXIT_ON_ERROR(hr);
hr = pAudioClient->Initialize(
AUDCLNT_SHAREMODE_SHARED,
0,
hnsRequestedDuration,
0,
pwfx,
NULL);
EXIT_ON_ERROR(hr);
// Get the actual size of the allocated buffer.
hr = pAudioClient->GetBufferSize(&bufferFrameCount);
EXIT_ON_ERROR(hr);
hr = pAudioClient->GetService(
IID_IAudioRenderClient,
(void**)&pRenderClient);
EXIT_ON_ERROR(hr);
// Grab the entire buffer for the initial fill operation.
hr = pRenderClient->GetBuffer(bufferFrameCount, &pData);
EXIT_ON_ERROR(hr);
// load initial data
hr = LoadAudioBuffer(bufferFrameCount, pData, pwfx, &flags);
EXIT_ON_ERROR(hr);
hr = pRenderClient->ReleaseBuffer(bufferFrameCount, flags);
EXIT_ON_ERROR(hr);
// Calculate the actual duration of the allocated buffer.
hnsActualDuration = (REFERENCE_TIME)((double)REFTIMES_PER_SEC * bufferFrameCount / pwfx->nSamplesPerSec);
hr = pAudioClient->Start(); // Start playing.
EXIT_ON_ERROR(hr);
// Each loop fills about half of the shared buffer.
while (flags != AUDCLNT_BUFFERFLAGS_SILENT)
{
// Sleep for half the buffer duration.
Sleep((DWORD)(hnsActualDuration/REFTIMES_PER_MILLISEC/2));
// See how much buffer space is available.
hr = pAudioClient->GetCurrentPadding(&numFramesPadding);
EXIT_ON_ERROR(hr)
numFramesAvailable = bufferFrameCount - numFramesPadding;
// Grab all the available space in the shared buffer.
hr = pRenderClient->GetBuffer(numFramesAvailable, &pData);
EXIT_ON_ERROR(hr)
// Get next 1/2-second of data from the audio source.
hr = LoadAudioBuffer(numFramesAvailable, pData, pwfx, &flags);
EXIT_ON_ERROR(hr)
hr = pRenderClient->ReleaseBuffer(numFramesAvailable, flags);
EXIT_ON_ERROR(hr)
}
// Wait for last data in buffer to play before stopping.
Sleep((DWORD)(hnsActualDuration/REFTIMES_PER_MILLISEC/2));
hr = pAudioClient->Stop(); // Stop playing.
EXIT_ON_ERROR(hr);
//.........这里部分代码省略.........