restored swscale and updated opengl fx spec

project/clip.cpp

@@ -25,8 +25,7 @@ Clip::Clip(Sequence* s) :
     media(NULL),
     opening_transition(NULL),
     closing_transition(NULL),
-    pkt(new AVPacket()),
-	filter_graph(NULL),
+	pkt(new AVPacket()),
 	replaced(false),
     texture(NULL)
 {

project/clip.h

@@ -18,8 +18,6 @@ struct AVCodec;
 struct AVCodecContext;
 struct AVFrame;
 struct AVPacket;
-struct AVFilterGraph;
-struct AVFilterContext;
 struct SwsContext;
 struct SwrContext;
 class QOpenGLTexture;
@@ -81,11 +79,7 @@ struct Clip
 	AVFrame* frame;
 	uchar* comp_frame;
 	int comp_frame_size;
-
-	// ffmpeg filters
-	AVFilterGraph* filter_graph;
-	AVFilterContext* buffersink_ctx;
-	AVFilterContext* buffersrc_ctx;
+	SwsContext* sws_ctx;
 
     bool pkt_written;
     bool reached_end;

project/undo.cpp

@@ -34,10 +34,6 @@ QUndoStack undo_stack;
 #define TA_MODIFY_TRANSITION 11
 #define TA_DELETE_TRANSITION 12
 
-extern "C" {
-	#include "libavfilter/avfilter.h"
-}
-
 TimelineAction::TimelineAction() :
     done(false),
     change_seq(false),