Surface() [1/5]

Surface::Surface ( Surface *  SubSurfaceFrom, SdFs *  pSD, const char *  path, const char *  fileName  )

inline

Definition at line 44 of file ILI9341_t3_ERIS.h.

                                                                                       {
        char str[16]; //char buffer
        char *c;     //char pointer
        FsFile file;
        guid = hash(path) * hash(fileName);
        w = 0;//init these in case of a bad path or file.
        c = 0;
        h = 0;
        alloc_size = 0;
        pSB = NULL;
        //open image, get size info, attempt to allocate a buffer then copy
        //and capture the dimensions
        if (!pSD->chdir(path)){ //change file path
            Serial.print(F("M ILI9341_t3_ERIS::bltSD Path not found: "));
            Serial.println(path);
            return;             
        }
        file.open(fileName, O_READ);//open image to read
        if (file.available() == 0){ //file not found
            Serial.print(F("M ILI9341_t3_ERIS::bltSD File Not Found: "));
            Serial.println(fileName);
            //pSD->ls();
            return;
        }
        file.fgets(str,sizeof(str)); //read the header data
        file.fgets(str,sizeof(str)); //to get the image dimensions
        file.close();
        strtok(str," ");             //convert dimension text to numbers
        w = atol(str);
        c = strtok(NULL, " ");
        h = atol(c);
        alloc_size = w*h;
        if (alloc_size < SURFACE_MIN_ALLOC_SIZE) alloc_size = SURFACE_MIN_ALLOC_SIZE;
        pSB = SubSurfaceFrom->requestSubSurfaceBufferP(alloc_size);
    }

References alloc_size, guid, h, hash(), pSB, requestSubSurfaceBufferP(), and w.

Referenced by Surface().

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