Posted on April 06, 2016 at 08:35Hello,
When I try to draw JPEG�s I get a faulty display.
http://www.ecs-online.dyndns.org/Uploads/Original.jpg
http://www.ecs-online.dyndns.org/Uploads/Incorrect.JPG
MS_LoadFileIntoMemory(&fileNames[currentSel][0], arrayImagePreview1, MEMORY_SPACE_IMAGE_PREVIEW_1, USBH_Path, &realFileSizePreview1);
prepareDrawPicture(); //For newXPos, newYPos, numeratorDraw, denominator
GUI_JPEG_DrawScaled(arrayImagePreview1, realFileSizePreview1, newXPos, newYPos, numeratorDraw, denominator);
int MS_LoadFileIntoMemory(char *fileName, char *fileBuffer, uint32_t fileSize, char* _Path, uint32_t* realFileSize)
{
uint32_t numberOfBytesRead; //Anzahl der tats�chlich gelesenen Zeichen
uint32_t numberOfBytesToRead; //Anzahl der zu lesenden Zeichen
int result; //Ergebniss der FAT Aktionen
char file_path[MAX_FILENAME_LEN + 4] = ''''; //Pfad zur Datei, + SD_Path l�nge (''0:/'') + String End Zeichen
FIL file; //Datei Handle
//Fehlerpr�fungen
assert_param(fileBuffer != NULL);
assert_param(fileName != NULL);
assert_param(fileName[0] != '\0');
assert_param(fileSize != 0);
//Pfadt zusammenbauen
//strcat(file_path, USBH_Path);
//strcat(file_path, SD_Path);
strcat(file_path, _Path);
strcat(file_path, fileName);
//Datei �ffnen
result = f_open(&file, file_path, FA_OPEN_EXISTING | FA_READ);
if (result != FR_OK)
{
GUI_DispString(fileName);
GUI_DispString('' Open File...ERROR\n'');
printf('' Open File...ERROR\n'');
return -1;
}
//Komplette Datei auslesen. Falls die Datei gr��er als der
//verf�gbarer Speicher ist, wird auf maximal m�gliche L�nge begrenzt
numberOfBytesToRead = file.fsize;
if (numberOfBytesToRead > fileSize)
{
numberOfBytesToRead = fileSize;
}
//Datei auslesen
result = f_read(&file,fileBuffer,numberOfBytesToRead,&numberOfBytesRead);
if (result != FR_OK)
{
result = f_close(&file);
GUI_DispString(fileName);
GUI_DispString('' Read File...ERROR\n'');
printf('' Read File...ERROR\n'');
return -2;
}
if(numberOfBytesToRead != numberOfBytesRead)
{
result = f_close(&file);
GUI_DispString(''numberOfBytesToRead != numberOfBytesRead ...ERROR\n'');
printf(''numberOfBytesToRead != numberOfBytesRead ...ERROR\n'');
return -3;
}
if(realFileSize != NULL)
{
*realFileSize = numberOfBytesRead;
}
//Datei schlie�en
result = f_close(&file);
if (result != FR_OK)
{
GUI_DispString(fileName);
GUI_DispString('' Close File...ERROR\n'');
printf('' Close File...ERROR\n'');
return -4;
}
return 0;
}
Does anyone have an idea where my mistake is?
Thanks a lot
Jens
#stemwin
