0698eeda94
Changes the formats dropdown for decklink output to only show formats using the same framerate as OBS does. OBS cannot perform framerate conversions, meaning that if OBS's framerate is set to 45fps, and decklink output is set to 60fps, the output will either lag heavily or simply not function.
97 lines
1.9 KiB
C++
97 lines
1.9 KiB
C++
#include "decklink-device-mode.hpp"
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DeckLinkDeviceMode::DeckLinkDeviceMode(IDeckLinkDisplayMode *mode, long long id)
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: id(id), mode(mode)
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{
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if (mode == nullptr)
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return;
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mode->AddRef();
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decklink_string_t decklinkStringName;
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if (mode->GetName(&decklinkStringName) == S_OK)
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DeckLinkStringToStdString(decklinkStringName, name);
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}
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DeckLinkDeviceMode::DeckLinkDeviceMode(const std::string &name, long long id)
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: id(id), mode(nullptr), name(name)
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{
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}
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DeckLinkDeviceMode::~DeckLinkDeviceMode(void)
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{
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if (mode != nullptr)
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mode->Release();
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}
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BMDDisplayMode DeckLinkDeviceMode::GetDisplayMode(void) const
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{
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if (mode != nullptr)
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return mode->GetDisplayMode();
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return bmdModeUnknown;
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}
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int DeckLinkDeviceMode::GetWidth()
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{
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if (mode != nullptr)
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return mode->GetWidth();
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return 0;
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}
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int DeckLinkDeviceMode::GetHeight()
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{
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if (mode != nullptr)
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return mode->GetHeight();
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return 0;
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}
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BMDDisplayModeFlags DeckLinkDeviceMode::GetDisplayModeFlags(void) const
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{
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if (mode != nullptr)
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return mode->GetFlags();
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return (BMDDisplayModeFlags)0;
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}
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long long DeckLinkDeviceMode::GetId(void) const
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{
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return id;
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}
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const std::string &DeckLinkDeviceMode::GetName(void) const
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{
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return name;
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}
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bool DeckLinkDeviceMode::IsEqualFrameRate(int64_t num, int64_t den)
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{
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if (!mode)
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return false;
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BMDTimeValue timeValue;
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BMDTimeScale timeScale;
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if (mode->GetFrameRate(&timeValue, &timeScale) != S_OK)
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return false;
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// Calculate greatest common divisor of both values to properly compare framerates
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int decklinkGcd = std::gcd(timeScale, timeValue);
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int inputGcd = std::gcd(num, den);
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return ((timeScale / decklinkGcd) == (num / inputGcd) &&
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(timeValue / decklinkGcd) == (den / inputGcd));
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}
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void DeckLinkDeviceMode::SetMode(IDeckLinkDisplayMode *mode_)
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{
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IDeckLinkDisplayMode *old = mode;
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if (old != nullptr)
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old->Release();
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mode = mode_;
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if (mode != nullptr)
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mode->AddRef();
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}
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