76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/* akvirtualcamera, virtual camera for Mac and Windows.
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* Copyright (C) 2020 Gonzalo Exequiel Pedone
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*
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* akvirtualcamera is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* akvirtualcamera is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with akvirtualcamera. If not, see <http://www.gnu.org/licenses/>.
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*
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* Web-Site: http://webcamoid.github.io/
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*/
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#include <strmif.h>
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#include <amvideo.h>
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#include <dvdmedia.h>
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#include <uuids.h>
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#include "latency.h"
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#include "PlatformUtils/src/utils.h"
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#include "VCamUtils/src/utils.h"
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namespace AkVCam
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{
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class LatencyPrivate
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{
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public:
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IAMStreamConfig *m_streamConfig {nullptr};
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};
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}
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AkVCam::Latency::Latency(IAMStreamConfig *streamConfig):
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CUnknown(this, IID_IAMLatency)
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{
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this->d = new LatencyPrivate;
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this->d->m_streamConfig = streamConfig;
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}
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AkVCam::Latency::~Latency()
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{
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delete this->d;
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}
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HRESULT AkVCam::Latency::GetLatency(REFERENCE_TIME *prtLatency)
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{
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AkLogFunction();
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if (!prtLatency)
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return E_POINTER;
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*prtLatency = 0;
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if (this->d->m_streamConfig) {
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AM_MEDIA_TYPE *mediaType = nullptr;
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if (SUCCEEDED(this->d->m_streamConfig->GetFormat(&mediaType))) {
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if (IsEqualGUID(mediaType->formattype, FORMAT_VideoInfo)) {
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auto format = reinterpret_cast<VIDEOINFOHEADER *>(mediaType->pbFormat);
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*prtLatency = format->AvgTimePerFrame;
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} else if (IsEqualGUID(mediaType->formattype, FORMAT_VideoInfo2)) {
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auto format = reinterpret_cast<VIDEOINFOHEADER2 *>(mediaType->pbFormat);
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*prtLatency = format->AvgTimePerFrame;
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}
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deleteMediaType(&mediaType);
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}
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}
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return S_OK;
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}
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