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Aiden
2026-05-12 01:21:42 +10:00
parent f1f4e3421b
commit ea31d0ca13
8 changed files with 527 additions and 35 deletions
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57
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkSession.cpp
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@@ -660,9 +660,45 @@ bool DeckLinkSession::ScheduleOutputFrame(const VideoIOOutputFrame& frame)
return scheduled;
}
bool DeckLinkSession::Start()
bool DeckLinkSession::PrepareOutputSchedule()
{
mScheduler.Reset();
RefreshBufferedVideoFrameCount();
return output != nullptr;
}
bool DeckLinkSession::StartInputStreams()
{
if (!input)
return true;
if (input->StartStreams() != S_OK)
{
MessageBoxA(NULL, "Could not start the DeckLink input stream.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
return true;
}
bool DeckLinkSession::StartScheduledPlayback()
{
if (!output)
{
MessageBoxA(NULL, "Cannot start playout because no DeckLink output device is available.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
if (output->StartScheduledPlayback(0, mScheduler.TimeScale(), 1.0) != S_OK)
{
MessageBoxA(NULL, "Could not start DeckLink scheduled playback.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
RefreshBufferedVideoFrameCount();
return true;
}
bool DeckLinkSession::Start()
{
if (!output)
{
MessageBoxA(NULL, "Cannot start playout because no DeckLink output device is available.", "DeckLink start failed", MB_OK | MB_ICONERROR);
@@ -676,6 +712,9 @@ bool DeckLinkSession::Start()
const VideoPlayoutPolicy policy = NormalizeVideoPlayoutPolicy(mPlayoutPolicy);
mPlayoutPolicy = policy;
if (!PrepareOutputSchedule())
return false;
for (unsigned i = 0; i < policy.targetPrerollFrames; i++)
{
CComPtr<IDeckLinkMutableVideoFrame> outputVideoFrame;
@@ -691,21 +730,7 @@ bool DeckLinkSession::Start()
}
}
if (input)
{
if (input->StartStreams() != S_OK)
{
MessageBoxA(NULL, "Could not start the DeckLink input stream.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
}
if (output->StartScheduledPlayback(0, mScheduler.TimeScale(), 1.0) != S_OK)
{
MessageBoxA(NULL, "Could not start DeckLink scheduled playback.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
return true;
return StartInputStreams() && StartScheduledPlayback();
}
bool DeckLinkSession::Stop()