ESP32-HUB75-MatrixPanel-DMA/ESP32-VirtualMatrixPanel-I2S-DMA.h

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#ifndef _ESP32_VIRTUAL_MATRIX_PANEL_I2S_DMA
#define _ESP32_VIRTUAL_MATRIX_PANEL_I2S_DMA
/*******************************************************************
Class contributed by Brian Lough, and expanded by Faptastic.
YouTube: https://www.youtube.com/brianlough
Tindie: https://www.tindie.com/stores/brianlough/
Twitter: https://twitter.com/witnessmenow
*******************************************************************/
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#include "ESP32-HUB75-MatrixPanel-I2S-DMA.h"
#ifndef NO_GFX
#include <Fonts/FreeSansBold12pt7b.h>
#endif
struct VirtualCoords {
int16_t x;
int16_t y;
};
#ifdef USE_GFX_ROOT
class VirtualMatrixPanel : public GFX
#elif !defined NO_GFX
class VirtualMatrixPanel : public Adafruit_GFX
#else
class VirtualMatrixPanel
#endif
{
public:
int16_t virtualResX;
int16_t virtualResY;
int16_t module_rows;
int16_t module_cols;
int16_t panelResX;
int16_t panelResY;
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MatrixPanel_I2S_DMA *display;
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VirtualMatrixPanel(MatrixPanel_I2S_DMA &disp, int vmodule_rows, int vmodule_cols, int panelX, int panelY, bool serpentine_chain = true, bool top_down_chain = false)
#ifdef USE_GFX_ROOT
: GFX(vmodule_cols*panelX, vmodule_rows*panelY)
#elif !defined NO_GFX
: Adafruit_GFX(vmodule_cols*panelX, vmodule_rows*panelY)
#endif
{
this->display = &disp;
panelResX = panelX;
panelResY = panelY;
module_rows = vmodule_rows;
module_cols = vmodule_cols;
virtualResY = vmodule_rows*panelY;
virtualResX = vmodule_cols*panelX;
_s_chain_party = serpentine_chain; // serpentine, or 'S' chain?
_chain_top_down= top_down_chain;
}
VirtualCoords getCoords(int16_t x, int16_t y);
// equivalent methods of the matrix library so it can be just swapped out.
virtual void drawPixel(int16_t x, int16_t y, uint16_t color);
virtual void fillScreen(uint16_t color); // overwrite adafruit implementation
void clearScreen() {
fillScreen(0);
}
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//void drawPixelRGB565(int16_t x, int16_t y, uint16_t color);
void drawPixelRGB888(int16_t x, int16_t y, uint8_t r, uint8_t g, uint8_t b);
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//void drawPixelRGB24(int16_t x, int16_t y, RGB24 color);
void drawIcon (int *ico, int16_t x, int16_t y, int16_t module_cols, int16_t module_rows);
uint16_t color444(uint8_t r, uint8_t g, uint8_t b) {
return display->color444(r, g, b);
}
uint16_t color565(uint8_t r, uint8_t g, uint8_t b) {
return display->color565(r, g, b);
}
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uint16_t color333(uint8_t r, uint8_t g, uint8_t b) {
return display->color333(r, g, b);
}
void flipDMABuffer() { display->flipDMABuffer(); }
void showDMABuffer() { display->showDMABuffer(); }
void drawDisplayTest();
// Rotate display
inline void setRotate(bool rotate);
private:
VirtualCoords coords;
bool _s_chain_party = true; // Are we chained? Ain't no party like a...
bool _chain_top_down = false; // is the ESP at the top or bottom of the matrix of devices?
bool _rotate = false;
}; // end Class header
inline VirtualCoords VirtualMatrixPanel::getCoords(int16_t x, int16_t y) {
coords.x = coords.y = 0;
if (x < 0 || x > width() || y < 0 || y > height() ) {
//Serial.printf("VirtualMatrixPanel::getCoords(): Invalid virtual display coordinate. x,y: %d, %d\r\n", x, y);
return coords;
}
// We want to rotate?
if (_rotate){
uint16_t temp_x=x;
x=y;
y=virtualResY-1-temp_x;
}
uint8_t row = (y / panelResY) + 1; //a non indexed 0 row number
if( ( _s_chain_party && !_chain_top_down && (row % 2 == 0) ) // serpentine vertically stacked chain starting from bottom row (i.e. ESP closest to ground), upwards
||
( _s_chain_party && _chain_top_down && (row % 2 != 0) ) // serpentine vertically stacked chain starting from the sky downwards
)
{
// First portion gets you to the correct offset for the row you need
// Second portion inverts the x on the row
coords.x = (y / panelResY) * (module_cols * panelResX) + (virtualResX - 1 - x);
// inverts the y the row
coords.y = panelResY - 1 - (y % panelResY);
}
else
{
coords.x = x + (y / panelResY) * (module_cols * panelResX) ;
coords.y = y % panelResY;
}
// Reverse co-ordinates if panel chain from ESP starts from the TOP RIGHT
if (_chain_top_down)
{
const HUB75_I2S_CFG _cfg = this->display->getCfg();
coords.x = (_cfg.mx_width * _cfg.chain_length - 1) - coords.x;
coords.y = (_cfg.mx_height-1) - coords.y;
//coords.x = (this->display->getCfg().mx_width-1) - coords.x;
//coords.y = (this->display->getCfg().mx_height-1) - coords.y;
}
//Serial.print("Mapping to x: "); Serial.print(coords.x, DEC); Serial.print(", y: "); Serial.println(coords.y, DEC);
return coords;
}
inline void VirtualMatrixPanel::drawPixel(int16_t x, int16_t y, uint16_t color)
{
VirtualCoords coords = getCoords(x, y);
this->display->drawPixel(coords.x, coords.y, color);
}
inline void VirtualMatrixPanel::fillScreen(uint16_t color) // adafruit virtual void override
{
// No need to map this.
this->display->fillScreen(color);
}
inline void VirtualMatrixPanel::drawPixelRGB888(int16_t x, int16_t y, uint8_t r, uint8_t g, uint8_t b)
{
VirtualCoords coords = getCoords(x, y);
this->display->drawPixelRGB888( coords.x, coords.y, r, g, b);
}
inline void VirtualMatrixPanel::setRotate(bool rotate) {
_rotate=rotate;
// We don't support rotation by degrees.
if (rotate) { setRotation(1); } else { setRotation(0); }
}
#ifndef NO_GFX
inline void VirtualMatrixPanel::drawDisplayTest()
{
this->display->setFont(&FreeSansBold12pt7b);
this->display->setTextColor(this->display->color565(255, 255, 0));
this->display->setTextSize(1);
for ( int panel = 0; panel < module_cols*module_rows; panel++ ) {
int top_left_x = (panel == 0) ? 0:(panel*panelResX);
this->display->drawRect( top_left_x, 0, panelResX, panelResY, this->display->color565( 0, 255, 0));
this->display->setCursor(panel*panelResX, panelResY-3);
this->display->print((module_cols*module_rows)-panel);
}
}
#endif
// need to recreate this one, as it wouldnt work to just map where it starts.
inline void VirtualMatrixPanel::drawIcon (int *ico, int16_t x, int16_t y, int16_t module_cols, int16_t module_rows) {
int i, j;
for (i = 0; i < module_rows; i++) {
for (j = 0; j < module_cols; j++) {
// This is a call to this libraries version of drawPixel
// which will map each pixel, which is what we want.
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//drawPixelRGB565 (x + j, y + i, ico[i * module_cols + j]);
drawPixel (x + j, y + i, ico[i * module_cols + j]);
}
}
}
#endif