tenfourfox/media/webrtc/trunk/webrtc/modules/video_capture/windows/BaseInputPin.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

106 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <assert.h>
#include "BaseInputPin.h"
#include <vector>
using namespace std;
namespace mozilla {
namespace media {
STDMETHODIMP
BaseInputPin::QueryInterface(REFIID aIId, void **aInterface)
{
if (!aInterface) {
return E_POINTER;
}
if (aIId == IID_IMemInputPin) {
*aInterface = static_cast<IMemInputPin*>(this);
AddRef();
return S_OK;
}
return BasePin::QueryInterface(aIId, aInterface);
}
STDMETHODIMP
BaseInputPin::BeginFlush()
{
CriticalSectionAutoEnter lock(*mLock);
assert(!mFlushing);
mFlushing = true;
return S_OK;
}
STDMETHODIMP
BaseInputPin::EndFlush()
{
CriticalSectionAutoEnter lock(*mLock);
assert(mFlushing);
mFlushing = false;
return S_OK;
}
STDMETHODIMP
BaseInputPin::GetAllocatorRequirements(ALLOCATOR_PROPERTIES*)
{
return E_NOTIMPL;
}
STDMETHODIMP
BaseInputPin::ReceiveCanBlock()
{
return S_OK;
}
STDMETHODIMP
BaseInputPin::Receive(IMediaSample* aSample)
{
if (mFlushing) {
return S_FALSE;
}
return S_OK;
}
STDMETHODIMP
BaseInputPin::ReceiveMultiple(IMediaSample **aSamples, long aSampleCount, long *aProcessedCount)
{
HRESULT hr = S_OK;
*aProcessedCount = 0;
while (aSampleCount-- > 0) {
hr = Receive(aSamples[*aProcessedCount]);
// Refuse when S_FALSE
if (hr != S_OK) {
break;
}
(*aProcessedCount)++;
}
return hr;
}
STDMETHODIMP
BaseInputPin::GetAllocator(IMemAllocator **aAllocator)
{
// It appears DirectShow will create an allocator for us in this case.
return VFW_E_NO_ALLOCATOR;
}
STDMETHODIMP
BaseInputPin::NotifyAllocator(IMemAllocator *aAllocator, BOOL aReadOnly)
{
mAllocator = aAllocator;
mReadOnly = aReadOnly;
return S_OK;
}
}
}