ESP32-HUB75-MatrixPanel-DMA/examples/ChainedPanelsScreenBuffer/FastLED_Pixel_Buffer.h
mrfaptastic 7ba611f81f Implement FastLED pixel buffer example
An extreme memory hog, but not too different to what is used with the Aurora demo's.

https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/discussions/225
2021-12-23 01:03:24 +00:00

51 lines
No EOL
1.8 KiB
C++

#ifndef VIRTUAL_MATRIX_PANEL_FASTLED_LAYER
#define VIRTUAL_MATRIX_PANEL_FASTLED_LAYER
#include <ESP32-VirtualMatrixPanel-I2S-DMA.h>
#include <FastLED.h>
class VirtualMatrixPanel_FastLED_Pixel_Buffer : public VirtualMatrixPanel
{
public:
using VirtualMatrixPanel::VirtualMatrixPanel; // perform VirtualMatrixPanel class constructor
bool allocateMemory() // allocate memory
{
// https://www.geeksforgeeks.org/how-to-declare-a-2d-array-dynamically-in-c-using-new-operator/
buffer = new CRGB[virtualResX * virtualResY]; // These are defined in the underliny
if (!buffer) { return false; }
Serial.printf("Allocated %d bytes of memory for pixel buffer.\r\n", sizeof(CRGB)*((virtualResX * virtualResY)+1));
this->clear();
return true;
} // end Buffer
virtual void drawPixel(int16_t x, int16_t y, uint16_t color); // overwrite adafruit implementation
void drawPixel(int16_t x, int16_t y, int r, int g, int b); // Buffer implementation
void drawPixel(int16_t x, int16_t y, CRGB color); // Buffer implementation
CRGB getPixel(int16_t x, int16_t y); // Returns a pixel value from the buffer.
void dimAll(byte value);
void dimRect(int16_t x, int16_t y, int16_t w, int16_t h, byte value);
void clear();
void show(); // Send buffer to physical hardware / DMA engine.
// Release Memory
~VirtualMatrixPanel_FastLED_Pixel_Buffer(void);
protected:
uint16_t XY16( uint16_t x, uint16_t y);
private:
CRGB* buffer = nullptr;
};
#endif