Description: add getOutputExtensions

Clement Champetier · Clement Champetier · commit f754f901fec8 · 2014-06-11T17:08:42.000+02:00
diff --git a/src/AvTranscoder/Description.hpp b/src/AvTranscoder/Description.hpp
@@ -68,8 +68,40 @@ std::vector<std::string> getInputExtensions()
 
 std::vector<std::string> getOutputExtensions()
 {
+	av_register_all();
 	std::vector<std::string> extensions;
+	AVOutputFormat* oFormat = NULL;
 
+	while( ( oFormat = av_oformat_next( oFormat ) ) )
+	{
+		if( oFormat->extensions != NULL )
+		{			
+			// parse extensions
+			std::string exts = std::string( oFormat->extensions );
+			char* ext = strtok( const_cast<char*>( exts.c_str() ), "," );
+			while( ext != NULL )
+			{
+				extensions.push_back( std::string( ext ) );
+				ext = strtok( NULL, "," );
+			}
+			
+			// parse name (name's format defines (in general) extensions )
+			// don't need to do it in recent LibAV/FFMpeg versions
+			exts = std::string( oFormat->name );
+			ext = strtok( const_cast<char*>( exts.c_str() ), "," );
+			while( ext != NULL )
+			{
+				extensions.push_back( std::string( ext ) );
+				ext = strtok( NULL, "," );
+			}
+		}
+	}
+	// sort
+	std::sort( extensions.begin(), extensions.end() ); 
+	// suppress duplicates
+	std::vector<std::string>::iterator last = std::unique( extensions.begin(), extensions.end() );
+	extensions.erase( last, extensions.end() );
+	
 	return extensions;
 }
 
