Diff: movie.cpp

Revision:

2:3935d2ed40cd

Child:

3:9376bf1f1bbd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/movie.cpp	Wed Aug 20 05:24:38 2014 +0000
@@ -0,0 +1,57 @@
+#include "mbed.h"
+#include "movie.h"
+#include "sbDriver.h"
+
+movie::movie(unsigned short int * movie_p, shiftBriteDisplay &display, unsigned int movieSize):r_display(display){
+    //Constructor - sets up initial condition
+    //r_display = display;  //setup a reference to the actual display
+    this->movie_p = movie_p; // pointer to the data. This data is simply and array of short integers but sequenced as frames
+    //i.e. if the display has 2 leds and the data is {12,13,14,15,16,17,18,19,20,21,22} then the first frame is 12,13,14+15,16,17
+    //corresponding to rgb_led1 and rgb_led2
+    currentFrame = 0;
+    frameSize = r_display.getModuleCount();
+    this->movieSize = movieSize; // in BYTES. Need to (((movieSize/sizeof(unsigned short int))/frameSize)/3) to get actual frames
+}
+
+void movie::play(){
+    /**Advance therough the movie one frame whenever this member method is called
+    Display is referenced with r_display
+    */
+
+    unsigned int dot = 0;
+//    unsigned int dotCol = 0;
+    unsigned short int rTemp, gTemp, bTemp;
+    //moduleCount is how many LEDS, assume 4, called frameSize
+    //currentFrame is how many frames we've loaded
+    //currentDot is which module in the frame, i.e. 0-3 in this example
+    //starts at 0
+    //So, first value is at *(movie_p + (currentFrame*moduleCount*currentDot))
+    // i.e. *(movie_p + 0*4*0) which is *(movie_p + 0), i.e. the very first byte
+    // so, colours are are *(movie_p + 0 + 0,1,2)
+    // Increment current Dot
+    // *(movie_p + (0*4*1) + 0,1,2) = 4+0, 4+1, 4+2)
+    // Iterate through all Dots
+    //then, increment the currentFrame and store for next time
+    //remember to check that we do not exceed the bounds of the data
+    //serial_p->printf("movie pointer l=%p r=%u v=%u",&movie_p,movie_p,*movie_p);
+    for(dot = 0; dot != frameSize; dot++){
+ //       movie_p+=(unsigned short int*)((currentFrame*frameSize*dot)+0);
+       /* rTemp = *(movie_p + ((currentFrame*frameSize*dot)+0));
+        gTemp = *(movie_p + ((currentFrame*frameSize*dot)+1));
+        bTemp = *(movie_p + ((currentFrame*frameSize*dot)+2));  */
+        rTemp = *(movie_p + ((currentFrame*frameSize*3)+(dot*3)+0));
+        gTemp = *(movie_p + ((currentFrame*frameSize*3)+(dot*3)+1));
+        bTemp = *(movie_p + ((currentFrame*frameSize*3)+(dot*3)+2));
+       //serial_p->printf("Frame: %d  Module: %d r:%d g:%d b:%d\r\n",currentFrame,dot,rTemp,gTemp,bTemp);
+        r_display.setLed(dot,rTemp,gTemp,bTemp);
+    }
+    
+    r_display.displayFrame();//update the display - MAKE IT HAPPEN
+    
+    currentFrame++;
+    //Check bounds
+    if((currentFrame)>=((movieSize/sizeof(unsigned short int))/frameSize)/3){
+        if(f_repeat == 1) currentFrame = 0;//start from first frame
+        else currentFrame--; //force to repeat last frame
+    }
+ }
\ No newline at end of file