From c187ad9af0c03d294f31f1145a68ad623a144286 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Fri, 8 Nov 2013 14:41:48 +0000
Subject: making relative cycler

---
 rotord/src/rotor.h | 63 +++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 51 insertions(+), 12 deletions(-)

(limited to 'rotord')

diff --git a/rotord/src/rotor.h b/rotord/src/rotor.h
index e087bac..14397e8 100644
--- a/rotord/src/rotor.h
+++ b/rotord/src/rotor.h
@@ -120,6 +120,9 @@ namespace Rotor {
 			Time_spec lastframe() const{
 				return Time_spec(time-(1.0f/framerate),framerate,duration);
 			}
+			Time_spec nextframe() const{
+				return Time_spec(time+(1.0f/framerate),framerate,duration);
+			}
 			int frame(){
 				return (int)((time*framerate)+0.5); //rounded to the nearest frame
 			}
@@ -134,6 +137,9 @@ namespace Rotor {
 			Frame_spec lastframe() const{
 				return Frame_spec(time-(1.0f/framerate),framerate,duration,w,h);
 			}
+			Frame_spec nextframe() const{
+				return Frame_spec(time+(1.0f/framerate),framerate,duration,w,h);
+			}
 	};
 	class Colour{
 		public:
@@ -392,14 +398,14 @@ namespace Rotor {
 				create_signal_input("Selector","Selector input");
 				create_attribute("mode","Cycling mode {cut|mix}","Mode","cut",{"cut","mix"});
 				create_attribute("length_mode","Transition length mode","Length mode","seconds",{"seconds","fraction"});
-				create_attribute("time_mode","Time mode","time mode","absolute",{"absolute","relative","stretch"});
+				create_attribute("time_mode","Time mode","time mode","absolute",{"absolute","relative"});
 				create_parameter("transition_length","number","transition length","Transition length",-1.0f,0.0f,0.0f);
 				title="Video cycler";
 				description="Cycles through video inputs according to selector signal";
 				duplicate_inputs=true;
 				UID="93dd9d76-2d09-11e3-9589-5bbbeea1b304";
 				segment=0;
-				segment_start=0.0f;
+				segment_start=segment_end=0.0f;
 				lastframe=0;
 			}
 			Video_cycler(map<string,string> &settings):Video_cycler() {
@@ -417,9 +423,15 @@ namespace Rotor {
 				if(thisframe==lastframe||thisframe==lastframe+1){
 					if (segment!=seg){
 						//start of new segment
-						cerr<<"Video_cycler: segment "<<seg<<" started: "<<((Time_spec)frame).time<<endl;
 						segment=seg;
 						segment_start=((Time_spec)frame).time;
+						//find segment end
+						Time_spec testframe=(Time_spec)frame.nextframe();
+						while ((int)inputs[0]->get(testframe)==seg&&testframe.time<frame.duration){
+							testframe=testframe.nextframe();
+						}
+						segment_end=((Time_spec)testframe).time;
+						cerr<<"Video_cycler: segment "<<seg<<" start: "<<segment_start<<" end: "<<segment_end<<endl;
 					}
 				}
 				else {
@@ -430,26 +442,53 @@ namespace Rotor {
 					else {
 						//find segment start
 						Time_spec testframe=(Time_spec)frame.lastframe();
-						while ((int)inputs[0]->get(testframe)==seg&&testframe.frame()>0){
+						while ((int)inputs[0]->get(testframe)==seg&&testframe.frame()>1){
 							testframe=testframe.lastframe();
-
 						}
 						segment_start=testframe.time;
 						segment=seg;
-						cerr<<"Video_cycler: segment "<<seg<<" started: "<<((Time_spec)frame).time<<endl;
+
+						testframe=(Time_spec)frame.nextframe();
+						while ((int)inputs[0]->get(testframe)==seg&&testframe.time<frame.duration){
+							testframe=testframe.nextframe();
+						}
+						segment_end=((Time_spec)testframe).time;
+						cerr<<"Video_cycler: segment "<<seg<<" start: "<<segment_start<<" end: "<<segment_end<<endl;
+					
 					}
 				}
 				lastframe=thisframe;
-				float wanted=(((Time_spec)frame).time-segment_start);
+				float start_time=(((Time_spec)frame).time-segment_start);
+				float end_time=(((Time_spec)frame).time-segment_end);
+
+				Frame_spec inframe=frame;
+				Frame_spec outframe=frame;
+				switch (attributes["time_mode"]->intVal){
+					case CYCLER_abs:
+						inframe=frame;
+						break;
+					case CYCLER_rel:
+						inframe=Frame_spec(start_time,frame.framerate,frame.duration,frame.w,frame.h,frame.audio);
+						outframe=Frame_spec(end_time,frame.framerate,frame.duration,frame.w,frame.h,frame.audio);
+						break;
+				}
+
+				//to x fade between segments in relative mode, need to know the end of the segment as well as the beginning?
+				//or keep an index of segment times?
+
+				//we don't want to mix from this input to the next
+				//we want to mix out the previous segment whose start time was the previous segment (or the end one)
+				//awkward, its getting close to the point where we just need access to all of the segments data everywhere?
+				//we have 2 times here 
 
 				if (attributes["mode"]->intVal==CYCLER_mix&&image_inputs.size()>1){
 					int im1=((int)inputs[0]->get((Time_spec)frame))%image_inputs.size();
 					int im2=(im1+1)%image_inputs.size();
 
 					float f=fmod(inputs[0]->get((Time_spec)frame),1.0f);
-					Image *in1=image_inputs[im1]->get(frame);
+					Image *in1=image_inputs[im1]->get(inframe);
 					if (in1){
-						Image *in2=image_inputs[im2]->get(frame);
+						Image *in2=image_inputs[im2]->get(outframe);
 						if (in2){
 							image=(*in1);
 							image*=(1.0f-f);
@@ -465,14 +504,14 @@ namespace Rotor {
 				//cut mode
 				for (uint32_t i=0;i<image_inputs.size();i++){
 					int whichinput=((int)inputs[0]->get((Time_spec)frame)+i)%image_inputs.size();
-					Image *in=image_inputs[whichinput]->get(frame);
+					Image *in=image_inputs[whichinput]->get(inframe);
 					if (in) return in;
 				}
 				return nullptr;
 			}
 			Video_cycler* clone(map<string,string> &_settings) { return new Video_cycler(_settings);};
 		private:
-			float segment_start;
+			float segment_start,segment_end;
 			int segment;
 			int lastframe;
 	};
@@ -698,7 +737,7 @@ namespace Rotor {
 									else {
 										//find segment start
 										Time_spec testframe=(Time_spec)frame.lastframe();
-										while ((int)inputs[0]->get(testframe)==seg&&testframe.frame()>0){
+										while ((int)inputs[0]->get(testframe)==seg&&testframe.frame()>1){
 											testframe=testframe.lastframe();
 
 										}
-- 
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