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#include "pch.h"
#include "MyFilter.h"
#include "AudioRenderer.h"
#include "Factory.h"
#include "MyBasicAudio.h"
#include "MyPin.h"
#include "MyPropertyPage.h"
namespace SaneAudioRenderer
{
MyFilter::MyFilter(ISettings* pSettings, HRESULT& result)
: CBaseFilter("Audio Renderer", nullptr, this, Factory::GetFilterGuid())
, m_bufferFilled(TRUE/*manual reset*/)
{
assert(result == S_OK);
try
{
if (SUCCEEDED(result))
m_clock = new MyClock(result);
if (SUCCEEDED(result))
m_renderer = std::make_unique<AudioRenderer>(pSettings, m_clock, m_bufferFilled, result);
if (SUCCEEDED(result))
m_basicAudio = new MyBasicAudio(*m_renderer);
if (SUCCEEDED(result))
m_pin = std::make_unique<MyPin>(*m_renderer, this, m_bufferFilled, result);
if (SUCCEEDED(result))
result = CreatePosPassThru(nullptr, FALSE, m_pin.get(), &m_seeking);
}
catch (std::bad_alloc&)
{
result = E_OUTOFMEMORY;
}
}
STDMETHODIMP MyFilter::NonDelegatingQueryInterface(REFIID riid, void** ppv)
{
if (riid == IID_IReferenceClock || riid == IID_IReferenceClockTimerControl)
return m_clock->QueryInterface(riid, ppv);
if (riid == IID_IBasicAudio)
return m_basicAudio->QueryInterface(riid, ppv);
if (riid == IID_IMediaSeeking)
return m_seeking->QueryInterface(riid, ppv);
if (riid == __uuidof(ISpecifyPropertyPages2))
return GetInterface(static_cast<ISpecifyPropertyPages2*>(this), ppv);
if (riid == IID_ISpecifyPropertyPages)
return GetInterface(static_cast<ISpecifyPropertyPages*>(this), ppv);
return CBaseFilter::NonDelegatingQueryInterface(riid, ppv);
}
int MyFilter::GetPinCount()
{
return 1;
}
CBasePin* MyFilter::GetPin(int n)
{
return (n == 0) ? m_pin.get() : nullptr;
}
STDMETHODIMP MyFilter::Stop()
{
return ChangeState<State_Stopped>(std::bind(&MyPin::Inactive, m_pin.get()));
}
STDMETHODIMP MyFilter::Pause()
{
return ChangeState<State_Paused>(std::bind(&MyPin::Active, m_pin.get()));
}
STDMETHODIMP MyFilter::Run(REFERENCE_TIME startTime)
{
return ChangeState<State_Running>(std::bind(&MyPin::Run, m_pin.get(), startTime));
}
STDMETHODIMP MyFilter::GetState(DWORD timeoutMilliseconds, FILTER_STATE* pState)
{
CheckPointer(pState, E_POINTER);
CAutoLock objectLock(this);
*pState = m_State;
if (!m_pin->StateTransitionFinished(timeoutMilliseconds))
return VFW_S_STATE_INTERMEDIATE;
return S_OK;
}
STDMETHODIMP MyFilter::GetPages(CAUUID* pPages)
{
CheckPointer(pPages, E_POINTER);
pPages->cElems = 1;
pPages->pElems = (GUID*)CoTaskMemAlloc(sizeof(GUID));
CheckPointer(pPages->pElems, E_OUTOFMEMORY);
*pPages->pElems = __uuidof(MyPropertyPage);
return S_OK;
}
STDMETHODIMP MyFilter::CreatePage(const GUID& guid, IPropertyPage** ppPage)
{
CheckPointer(ppPage, E_POINTER);
if (guid != __uuidof(MyPropertyPage))
return E_UNEXPECTED;
MyPropertyPage* pPage;
try
{
CAutoLock rendererLock(m_renderer.get());
auto inputFormat = m_renderer->GetInputFormat();
auto devicetFormat = m_renderer->GetDeviceFormat();
pPage = new MyPropertyPage(inputFormat.get(), devicetFormat.get());
}
catch (std::bad_alloc&)
{
return E_OUTOFMEMORY;
}
pPage->AddRef();
HRESULT result = pPage->QueryInterface(IID_PPV_ARGS(ppPage));
pPage->Release();
return result;
}
template <FILTER_STATE NewState, typename PinFunction>
STDMETHODIMP MyFilter::ChangeState(PinFunction pinFunction)
{
CAutoLock objectLock(this);
if (m_State != NewState)
{
ReturnIfFailed(pinFunction());
m_State = NewState;
}
if (!m_pin->StateTransitionFinished(0))
return S_FALSE;
return S_OK;
}
}
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