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#include "shared-bindings/displayio/FourWire.h"
extern displayio_fourwire_obj_t board_display_obj;
void start_region_update(displayio_fourwire_obj_t* display, uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
// TODO delegate between different display types
displayio_fourwire_start_region_update(display, x0, y0, x1, y1);
}
void finish_region_update(displayio_fourwire_obj_t* display) {
// TODO delegate between different display types
displayio_fourwire_finish_region_update(display);
}
void finish_refresh(displayio_fourwire_obj_t* display) {
// TODO delegate between different display types
displayio_fourwire_finish_refresh(display);
}
bool frame_queued(displayio_fourwire_obj_t* display) {
// TODO delegate between different display types
return displayio_fourwire_frame_queued(display);
}
bool refresh_queued(displayio_fourwire_obj_t* display) {
// TODO delegate between different display types
return displayio_fourwire_refresh_queued(display);
}
bool send_pixels(displayio_fourwire_obj_t* display, uint32_t* pixels, uint32_t length) {
// TODO delegate between different display types
return displayio_fourwire_send_pixels(display, pixels, length);
}
void displayio_refresh_display(void) {
displayio_fourwire_obj_t* display = &board_display_obj;
if (!frame_queued(display)) {
return;
}
if (refresh_queued(display)) {
// We compute the pixels
uint16_t x0 = 0;
uint16_t y0 = 0;
uint16_t x1 = display->width;
uint16_t y1 = display->height;
size_t index = 0;
//size_t row_size = (x1 - x0);
uint16_t buffer_size = 256;
uint32_t buffer[buffer_size / 2];
start_region_update(display, x0, y0, x1, y1);
for (uint16_t y = y0; y < y1; ++y) {
for (uint16_t x = x0; x < x1; ++x) {
uint16_t* pixel = &(((uint16_t*)buffer)[index]);
*pixel = 0;
if (display->current_group != NULL) {
displayio_group_get_pixel(display->current_group, x, y, pixel);
}
index += 1;
// The buffer is full, send it.
if (index >= buffer_size) {
if (!send_pixels(display, buffer, buffer_size / 2)) {
finish_region_update(display);
return;
}
index = 0;
}
}
}
// Send the remaining data.
if (index && !send_pixels(display, buffer, index * 2)) {
finish_region_update(display);
return;
}
finish_region_update(display);
}
finish_refresh(display);
}
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