Tips: Show a jpg from storage such as SD

This is a simple example to show jpg on display app.

#include <Arduino.h>
#include <DisplayApp.h>
#include "SdUsbConnect.h"

DisplayApp display_app;
SdUsbConnect storage("storage");

void setup() {
 Serial.begin(9600);
 pinMode(PIN_LED_RED, OUTPUT);
 pinMode(PIN_LED_GREEN, OUTPUT);
 pinMode(PIN_LED_BLUE, OUTPUT);

 Serial.println("Test starts");

 // SD & USB
 Serial.print("Finding strage..");
 storage.wait_connect();
 Serial.println("done");

}

void loop() {
 FILE * fp = fopen("/storage/faceimg.jpg", "r");
 if (fp != NULL) {
 digitalWrite(PIN_LED_GREEN, HIGH);
 fseek(fp, 0, SEEK_END);
 uint32_t jpegSize = ftell(fp);
 fseek(fp, 0, SEEK_SET);
 uint8_t * buffer = (uint8_t*) malloc (jpegSize);
 for(uint32_t i = 0; i < jpegSize; i++){
 buffer[i] = (uint8_t)fgetc(fp);
 }
 display_app.SendJpeg(buffer, jpegSize);
 fclose (fp);
 digitalWrite(PIN_LED_GREEN, LOW);
 } else {
 Serial.print("Not found jpg");
 digitalWrite(PIN_LED_RED, HIGH);
 delay(1);
 }
}