subelf/Spp2Pgs

Convert subtitles(ass, etc.) provided by ISubPicProvider to HDMV PG streams(sup)

Spp2Pgs

Converts general subtitles to HDMV PG streams.
In other words, converts .ass files to .sup files.

The project generates a command line application and a CLR dll file.
Core of them is a static library, libspp2pgs.

An external dll, xy-VSSppf, is introduced to deal with subtitle files.
It's based on a forked version of xy-VSFilter, rendering and providing subtitles in a more easy way.

Here is a breif description for all the four parts.

Spp2Pgs*.exe

An executable converts subtitles to .sup files.
Usage:
Spp2Pgs -i "X:\Saya1011con.ass" -s 1080 -r 23 "X:\Saya1011con.sup"
Type Spp2Pgs -h for more help.

libspp2pgs & Spp2PgsNet*.dll

The core and its CLR library wrapper for .NET framework applications.
Three classes play the main role:

• PgsEncoder, encoding and writing a pgs file.
• FrameStream, reading subtitles and rendering subtitles into image.
• Spp2Pgs, an entrance for all other things. Also reading images from FrameStream and sending them to PgsEncoder.

And this is a SAMPLE for C#:

//class MySettings : IS2PSettings { ... }
//class MyLogger : IS2PLogger { ... }

using (Spp2Pgs tS2P = new Spp2Pgs(new MySettings(), new MyLogger()))	//Create Spp2Pgs obj
using (var tCtx = tS2P.CreateSubPicProviderContext())	//Create SppContext Obj, necessary for creating Spp
using (var tOutputStream = new FileStream(@"X:\Sayas1011con.sup", FileMode.Create))	//Create output file
using (var tOutput = tS2P.CreatePgsEncoder(tOutputStream, BdViFormat.Vi1080i, BdViFrameRate.Vi23)) //Create PgsEncoder
{
    tOutput.RegistAnchor(0);    //Ensure an epoch at pts==0

	//Create Spp, necessary for processing subtitle files
	using (var tSpp = tS2P.CreateSubPicProvider(tCtx, new FileInfo(@"X:\Illya.ass")))
	{
		//Create Advisor, providing additional info for FrameStream.
		var tAdv =
			tS2P.CreateSppFrameStreamAdvisor(tSpp, BdViFormat.Vi1080p, BdViFrameRate.Vi23,	//Rendering format and rate
			-1, -1, 0);	//Rendering subtitle from begin to end, without an offset.
		//Create FrameStream
		using (var tInput = tS2P.CreateFrameStream(tSpp, tAdv))
		{
			//Encode from a FrameStream to a PgsEncoder
			tS2P.Encode(tInput, tOutput, null);
			//Done.
		}
	}
}

xy-VSSppf*.dll

xy-VobSub SubPicProvider Factory. This is a COM dll, exposing an ISubPicProviderAlfa interface to Spp2Pgs.
It's a necessary part for Spp2Pgs.

Special Thanks

• This projects starts on basis of avs2bdnxml
• xy-VSSppf is a forked version of xy-VSFilter