Initial import from SVN

transcode/InputMediaFile.cpp

@@ -0,0 +1,87 @@
+
+#include <list>
+
+#include <boost/foreach.hpp>
+
+#include "InputMediaFile.hpp"
+
+#include "av/InputFormatContext.hpp"
+
+namespace Transcode
+{
+
+bool getStreamType(enum AVMediaType type, Transcode::Stream::Type& streamType)
+{
+	switch (type) {
+		case AVMEDIA_TYPE_VIDEO:	streamType = Transcode::Stream::Video; return true;
+		case AVMEDIA_TYPE_AUDIO:	streamType = Transcode::Stream::Audio; return true;
+		case AVMEDIA_TYPE_SUBTITLE:	streamType = Transcode::Stream::Subtitle; return true;
+		default:
+			return false;
+	}
+}
+
+
+InputMediaFile::InputMediaFile(const boost::filesystem::path& p)
+: _path(p)
+{
+	Av::InputFormatContext input(_path);
+	input.findStreamInfo();
+
+	// Calculate estimated duration
+	if (input.getDurationSecs())
+		_duration	= boost::posix_time::seconds(input.getDurationSecs() + 1);
+
+	// Get input streams
+	std::vector<Av::Stream> streams = input.getStreams();
+
+	std::list<enum AVMediaType> types;
+	for (std::size_t streamId = 0; streamId < streams.size(); ++streamId)
+	{
+		Stream::Type type;
+
+		if (getStreamType(streams[streamId].getCodecContext().getType(), type))
+		{
+			types.push_back(streams[streamId].getCodecContext().getType());
+
+			_streams.push_back( Stream(streamId,
+						type,
+						streams[streamId].getMetadata().get("language"),	// TODO define somewhere else?
+						streams[streamId].getCodecContext().getCodecDesc()
+						));
+		}
+	}
+
+	types.unique();
+	// Scan for best streams
+	BOOST_FOREACH(enum AVMediaType type, types)
+	{
+		Av::Stream::Idx index;
+
+		if (input.getBestStreamIdx(type, index))
+		{
+			Stream::Type streamType;
+			if (getStreamType(type, streamType))
+				_bestStreams.insert(std::make_pair( streamType, index) );
+		}
+		else
+			std::cerr << "Cannot find best stream for type " << type << std::endl;
+	}
+
+}
+
+std::vector<Stream>
+InputMediaFile::getStreams(Stream::Type type) const
+{
+	std::vector<Stream> res;
+	BOOST_FOREACH(const Stream& stream, _streams)
+	{
+		if (stream.getType() == type)
+			res.push_back(stream);
+	}
+	return res;
+}
+
+
+} // namespace Transcode
+