HRESULT CWASAPIRenderFilter::IsFormatSupported(const WAVEFORMATEXTENSIBLE* pwfx, WAVEFORMATEXTENSIBLE** pwfxAccepted)
{
WAVEFORMATEXTENSIBLE* pwfxCM = NULL;
WAVEFORMATEX* tmpPwfx = NULL;
HRESULT hr = m_pAudioClient->IsFormatSupported(m_pSettings->m_WASAPIShareMode, (WAVEFORMATEX*)pwfx, (WAVEFORMATEX**)&pwfxCM);
if (hr != S_OK)
{
CopyWaveFormatEx((WAVEFORMATEXTENSIBLE**)&tmpPwfx, pwfx);
tmpPwfx->cbSize = 0;
tmpPwfx->wFormatTag = WAVE_FORMAT_PCM;
hr = m_pAudioClient->IsFormatSupported(m_pSettings->m_WASAPIShareMode, (WAVEFORMATEX*)tmpPwfx, (WAVEFORMATEX**)&pwfxCM);
if (hr != S_OK)
{
Log("CWASAPIRenderFilter::NegotiateFormat WASAPI client refused the format: (0x%08x)", hr);
LogWaveFormat(pwfxCM, "Closest match would be" );
SAFE_DELETE_WAVEFORMATEX(tmpPwfx);
CoTaskMemFree(pwfxCM);
return VFW_E_TYPE_NOT_ACCEPTED;
}
ToWaveFormatExtensible(pwfxAccepted, tmpPwfx);
(*pwfxAccepted)->Format.cbSize = 0;
(*pwfxAccepted)->Format.wFormatTag = WAVE_FORMAT_PCM;
SAFE_DELETE_WAVEFORMATEX(tmpPwfx);
}
else
CopyWaveFormatEx(pwfxAccepted, pwfx);
return hr;
}
HRESULT CWASAPIRenderFilter::IsFormatSupported(const WAVEFORMATEXTENSIBLE* pwfx, WAVEFORMATEXTENSIBLE** pwfxAccepted)
{
WAVEFORMATEXTENSIBLE* pwfxCM = NULL;
WAVEFORMATEX* tmpPwfx = NULL;
AUDCLNT_SHAREMODE shareMode = m_pSettings->GetWASAPIMode();
HRESULT hr = m_pAudioClient->IsFormatSupported(shareMode, (WAVEFORMATEX*)pwfx, (WAVEFORMATEX**)&pwfxCM);
if (hr != S_OK)
{
if (hr == AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED)
{
Log("CWASAPIRenderFilter::NegotiateFormat WASAPI client will only accept shared mode sessions, check audio device's configuration.");
return hr;
}
if (CBaseAudioSink::CanBitstream(pwfx)) // Misrepresenting the media type for bit streamable formats will make negotiation succeed, but playback will not
return hr;
CopyWaveFormatEx((WAVEFORMATEXTENSIBLE**)&tmpPwfx, pwfx);
tmpPwfx->cbSize = 0;
tmpPwfx->wFormatTag = WAVE_FORMAT_PCM;
hr = m_pAudioClient->IsFormatSupported(shareMode, (WAVEFORMATEX*)tmpPwfx, (WAVEFORMATEX**)&pwfxCM);
if (hr != S_OK)
{
Log("CWASAPIRenderFilter::NegotiateFormat WASAPI client refused the format: (0x%08x)", hr);
LogWaveFormat(pwfxCM, "Closest match would be" );
SAFE_DELETE_WAVEFORMATEX(tmpPwfx);
CoTaskMemFree(pwfxCM);
return VFW_E_TYPE_NOT_ACCEPTED;
}
ToWaveFormatExtensible(pwfxAccepted, tmpPwfx);
(*pwfxAccepted)->Format.cbSize = 0;
(*pwfxAccepted)->Format.wFormatTag = WAVE_FORMAT_PCM;
SAFE_DELETE_WAVEFORMATEX(tmpPwfx);
}
else
CopyWaveFormatEx(pwfxAccepted, pwfx);
return hr;
}
HRESULT CChannelMixer::NegotiateFormat(const WAVEFORMATEXTENSIBLE* pwfx, int nApplyChangesDepth, ChannelOrder* pChOrder)
{
if (!pwfx)
return VFW_E_TYPE_NOT_ACCEPTED;
if (FormatsEqual(pwfx, m_pInputFormat))
{
*pChOrder = m_chOrder;
return S_OK;
}
if (!m_pNextSink)
return VFW_E_TYPE_NOT_ACCEPTED;
bool bApplyChanges = (nApplyChangesDepth != 0);
if (nApplyChangesDepth != INFINITE && nApplyChangesDepth > 0)
nApplyChangesDepth--;
if (pwfx->SubFormat != KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)
return VFW_E_TYPE_NOT_ACCEPTED;
HRESULT hr = S_OK;
bool expandToStereo = pwfx->Format.nChannels == 1 && m_pSettings->m_bExpandMonoToStereo;
if (!m_pSettings->m_bForceChannelMixing && !expandToStereo)
{
// try the format directly
hr = m_pNextSink->NegotiateFormat(pwfx, nApplyChangesDepth, pChOrder);
if (SUCCEEDED(hr))
{
if (bApplyChanges)
{
SetInputFormat(pwfx);
SetOutputFormat(pwfx);
m_bPassThrough = false;
hr = SetupConversion(*pChOrder);
}
m_chOrder = *pChOrder;
return hr;
}
}
WAVEFORMATEXTENSIBLE* pOutWfx;
CopyWaveFormatEx(&pOutWfx, pwfx);
if (!expandToStereo || m_pSettings->m_bForceChannelMixing)
{
pOutWfx->dwChannelMask = m_pSettings->m_lSpeakerConfig;
pOutWfx->Format.nChannels = m_pSettings->m_lSpeakerCount;
}
else // Expand mono to stereo
{
pOutWfx->dwChannelMask = KSAUDIO_SPEAKER_STEREO;
pOutWfx->Format.nChannels = 2;
}
pOutWfx->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
pOutWfx->Format.nBlockAlign = pOutWfx->Format.wBitsPerSample / 8 * pOutWfx->Format.nChannels;
pOutWfx->Format.nAvgBytesPerSec = pOutWfx->Format.nBlockAlign * pOutWfx->Format.nSamplesPerSec;
hr = m_pNextSink->NegotiateFormat(pOutWfx, nApplyChangesDepth, pChOrder);
m_chOrder = *pChOrder;
if (FAILED(hr))
{
SAFE_DELETE_WAVEFORMATEX(pOutWfx);
return hr;
}
if (bApplyChanges)
{
LogWaveFormat(pwfx, "MIX - applying ");
m_bPassThrough = false;
SetInputFormat(pwfx);
SetOutputFormat(pOutWfx, true);
hr = SetupConversion(*pChOrder);
}
else
{
LogWaveFormat(pwfx, "MIX - ");
SAFE_DELETE_WAVEFORMATEX(pOutWfx);
}
return hr;
}
HRESULT CSampleRateConverter::NegotiateFormat(const WAVEFORMATEXTENSIBLE* pwfx, int nApplyChangesDepth, ChannelOrder* pChOrder)
{
if (!pwfx)
return VFW_E_TYPE_NOT_ACCEPTED;
if (FormatsEqual(pwfx, m_pInputFormat))
{
*pChOrder = m_chOrder;
return S_OK;
}
if (!m_pNextSink)
return VFW_E_TYPE_NOT_ACCEPTED;
bool bApplyChanges = (nApplyChangesDepth != 0);
if (nApplyChangesDepth != INFINITE && nApplyChangesDepth > 0)
nApplyChangesDepth--;
// Try passthrough
HRESULT hr = m_pNextSink->NegotiateFormat(pwfx, nApplyChangesDepth, pChOrder);
if (SUCCEEDED(hr))
{
if (bApplyChanges)
{
m_bPassThrough = true;
SetInputFormat(pwfx);
SetOutputFormat(pwfx);
}
m_chOrder = *pChOrder;
return hr;
}
if (pwfx->SubFormat != KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)
return VFW_E_TYPE_NOT_ACCEPTED;
WAVEFORMATEXTENSIBLE* pOutWfx;
CopyWaveFormatEx(&pOutWfx, pwfx);
pOutWfx->Format.nSamplesPerSec = 0;
hr = VFW_E_TYPE_NOT_ACCEPTED;
const unsigned int sampleRateCount = sizeof(gAllowedSampleRates) / sizeof(int);
unsigned int startPoint = 0;
// TODO test duplicate sample rates first
// Search for the input sample rate in sample rate array
bool foundSampleRate = false;
for (unsigned int i = 0; i < sampleRateCount && !foundSampleRate; i++)
{
if (gAllowedSampleRates[i] == pwfx->Format.nSamplesPerSec)
{
startPoint = ++i; // select closest sample rate in ascending order
foundSampleRate = true;
}
}
if (!foundSampleRate)
Log("CSampleRateConverter::NegotiateFormat - sample rate (%d) not found in the source array", pwfx->Format.nSamplesPerSec);
unsigned int sampleRatesTested = 0;
for (int i = startPoint; FAILED(hr) && pOutWfx->Format.nSamplesPerSec == 0 && sampleRatesTested < sampleRateCount; i++)
{
if (pOutWfx->Format.nSamplesPerSec == pwfx->Format.nSamplesPerSec)
{
sampleRatesTested++;
continue; // skip if same as source
}
pOutWfx->Format.nSamplesPerSec = gAllowedSampleRates[i];
pOutWfx->Format.nAvgBytesPerSec = gAllowedSampleRates[i] * pOutWfx->Format.nBlockAlign;
hr = m_pNextSink->NegotiateFormat(pOutWfx, nApplyChangesDepth, pChOrder);
sampleRatesTested++;
if (FAILED(hr))
pOutWfx->Format.nSamplesPerSec = 0;
// Search from the lower end
if (i == sampleRateCount - 1)
i = 0;
}
if (FAILED(hr))
{
SAFE_DELETE_WAVEFORMATEX(pOutWfx);
return hr;
}
if (bApplyChanges)
{
LogWaveFormat(pwfx, "SRC - applying ");
m_bPassThrough = false;
SetInputFormat(pwfx);
SetOutputFormat(pOutWfx, true);
hr = SetupConversion();
// TODO: do something meaningfull if SetupConversion fails
//if (FAILED(hr))
}
else
{
LogWaveFormat(pwfx, "SRC - ");
SAFE_DELETE_WAVEFORMATEX(pOutWfx);
}
m_chOrder = *pChOrder;
return S_OK;
}
