Diff: LED_WS2812/Pixel/PixelArray.cpp

Revision:

0:89b87662e64b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LED_WS2812/Pixel/PixelArray.cpp	Tue Sep 29 09:08:55 2020 +0000
@@ -0,0 +1,173 @@
+#include "PixelArray.h"
+
+PixelArray::PixelArray(int size)
+{
+    pbufsize = size;
+    pbuf = new int[pbufsize];
+    SetAll(0x0); // initialise memory to zeros
+    
+}
+
+PixelArray::~PixelArray()
+{
+    delete[] pbuf;
+}
+
+void PixelArray::SetAll(unsigned int value)
+{
+    // for each pixel
+    for (int i=0 ; i < pbufsize; i++) {
+        __set_pixel(i,value);
+    }
+}
+
+
+void PixelArray::SetAllI(unsigned char value)
+{
+    // for each pixel
+    for (int i=0 ; i < pbufsize; i++) {
+        __set_pixel_component(i,3,value);
+    }
+}
+
+
+
+void PixelArray::SetAllR(unsigned char value)
+{
+    // for each pixel
+    for (int i=0 ; i < pbufsize; i++) {
+        __set_pixel_component(i,2,value);
+    }
+}
+
+void PixelArray::SetAllG(unsigned char value)
+{
+    // for each pixel
+    for (int i=0 ; i < pbufsize; i++) {
+        __set_pixel_component(i,1,value);
+    }
+}
+
+void PixelArray::SetAllB(unsigned char value)
+{
+    // for each pixel
+    for (int i=0 ; i < pbufsize; i++) {
+        __set_pixel_component(i,0,value);
+    }
+}
+
+
+
+
+
+void PixelArray::Set(int i, unsigned int value)
+{
+    if ((i >= 0) && (i < pbufsize)) {
+        __set_pixel(i,value);
+    }
+}
+
+
+
+void PixelArray::SetI(int i, unsigned char value)
+{
+    if ((i >= 0) && (i < pbufsize)) {
+        __set_pixel_component(i,3,value);
+    }
+}
+
+
+void PixelArray::SetR(int i, unsigned char value)
+{
+    if ((i >= 0) && (i < pbufsize)) {
+        __set_pixel_component(i,2,value);
+    }
+}
+
+void PixelArray::SetG(int i, unsigned char value)
+{
+    if ((i >= 0) && (i < pbufsize)) {
+        __set_pixel_component(i,1,value);
+    }
+}
+
+void PixelArray::SetB(int i, unsigned char value)
+{
+    if ((i >= 0) && (i < pbufsize)) {
+        __set_pixel_component(i,0,value);
+    }
+}
+
+
+unsigned int  PixelArray::Get(int i)
+{
+         return __get_pixel(i);
+}
+
+unsigned int  PixelArray::GetI(int i)
+{
+         return __get_pixel_component(i,3);
+}
+
+unsigned int  PixelArray::GetR(int i)
+{
+         return __get_pixel_component(i,2);
+}
+
+unsigned int  PixelArray::GetG(int i)
+{
+         return __get_pixel_component(i,1);
+}
+
+unsigned int  PixelArray::GetB(int i)
+{
+         return __get_pixel_component(i,0);
+}
+
+
+
+int* PixelArray::getBuf()
+{
+    return (pbuf);
+}
+
+
+// set either the I,R,G,B value of specific pixel channel
+void PixelArray::__set_pixel_component(int index, int channel, int value)
+{
+
+    // AND with 0x00 shifted to the right location to clear the bits
+    pbuf[index] &= ~(0xFF << (8 * channel));
+
+    // Set the bits with an OR
+    pbuf[index] |= (value << (8 * channel));
+}
+
+
+// set either the I,R,G,B value of specific pixel channel
+void PixelArray::__set_pixel(int index, int value)
+{
+    // AND with 0x00 shifted to the right location to clear the bits
+    pbuf[index] = value;
+}
+
+
+// get specific pixel
+int  PixelArray::__get_pixel(int index)
+{
+    if ((index >= 0) && (index < pbufsize)) {
+        return pbuf[index];
+    } else {
+        return 0;
+    }
+}
+
+
+// get specific pixel
+int  PixelArray::__get_pixel_component(int index, int channel)
+{
+    // AND with 0xFF shifted to the right location to get the bits
+    return ( (__get_pixel(index) & (0xFF << (8 * channel))) >> (8*channel) );
+}
+
+