decklink: Add ability to ingest/embed cea 708 captions

(This commit also modifies libobs, UI)

plugins/decklink/OBSVideoFrame.cpp

@@ -0,0 +1,72 @@
+#include "OBSVideoFrame.h"
+
+OBSVideoFrame::OBSVideoFrame(long width, long height)
+{
+	this->width = width;
+	this->height = height;
+	this->rowBytes = width * 2;
+	this->data = new unsigned char[width * height * 2 + 1];
+}
+
+HRESULT OBSVideoFrame::SetFlags(BMDFrameFlags newFlags)
+{
+	flags = newFlags;
+	return S_OK;
+}
+
+HRESULT OBSVideoFrame::SetTimecode(BMDTimecodeFormat format,
+				   IDeckLinkTimecode *timecode)
+{
+	return 0;
+}
+
+HRESULT
+OBSVideoFrame::SetTimecodeFromComponents(BMDTimecodeFormat format,
+					 uint8_t hours, uint8_t minutes,
+					 uint8_t seconds, uint8_t frames,
+					 BMDTimecodeFlags flags)
+{
+	return 0;
+}
+
+HRESULT OBSVideoFrame::SetAncillaryData(IDeckLinkVideoFrameAncillary *ancillary)
+{
+	return 0;
+}
+
+HRESULT OBSVideoFrame::SetTimecodeUserBits(BMDTimecodeFormat format,
+					   BMDTimecodeUserBits userBits)
+{
+	return 0;
+}
+
+long OBSVideoFrame::GetWidth()
+{
+	return width;
+}
+
+long OBSVideoFrame::GetHeight()
+{
+	return height;
+}
+
+long OBSVideoFrame::GetRowBytes()
+{
+	return rowBytes;
+}
+
+BMDPixelFormat OBSVideoFrame::GetPixelFormat()
+{
+	return pixelFormat;
+}
+
+BMDFrameFlags OBSVideoFrame::GetFlags()
+{
+	return flags;
+}
+
+HRESULT OBSVideoFrame::GetBytes(void **buffer)
+{
+	*buffer = this->data;
+	return S_OK;
+}