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70 lines
1.4 KiB
C++
70 lines
1.4 KiB
C++
#include <Arduino.h>
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#include "imagePNG.h"
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#include "pngle.h"
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#include "SPIFFS.h"
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#include "display.h"
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void on_draw(pngle_t *pngle, uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint8_t rgba[4]);
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void setupImagePNG()
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{
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SPIFFS.begin();
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displayOpen();
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pngle_t *pngle = pngle_new();
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pngle_set_draw_callback(pngle, on_draw);
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File file = SPIFFS.open("/blackPNG.png", "r");
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if (!file)
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{
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Serial.println(" file not found");
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}
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// get filesize
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long size = file.size();
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// read contents of the file into the vector
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char *buffer = (char *)malloc((unsigned long)size);
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if (!buffer)
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{
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file.close();
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Serial.println(" allow failedd");
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}
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file.readBytes(buffer, (size_t)size);
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file.close();
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Serial.println(" read png");
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int ret = pngle_feed(pngle, buffer, size);
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//Serial.println(" return: " + ret);
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//Serial.println(" width: " + pngle_get_width(pngle));
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//Serial.println(" height: " + pngle_get_height(pngle));
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Serial.println(" read png done");
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pngle_destroy(pngle);
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displayFlush();
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}
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void on_draw(pngle_t *pngle, uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint8_t rgba[4])
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{
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uint8_t r = rgba[0]; // 0 - 255
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uint8_t g = rgba[1]; // 0 - 255
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uint8_t b = rgba[2]; // 0 - 255
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uint8_t a = rgba[3]; // 0: fully transparent, 255: fully opaque
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if (a)
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{
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// 640 x 384
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if (true) // x == 0
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{
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//printf("put pixel at (%d, %d) with color #%02x%02x%02x\n", x, y, r, g, b);
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}
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displayWritePixel(x, y, r);
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}
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}
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