isolated error in clearSeries()

imageInput.c

@@ -6,17 +6,186 @@
 #define BUFFER_SIZE 100
 #define FILE_HEADER_STRING "__info2_image_file_format__"
 
+// Funktionen müssen noch auf Teilfunktionen 
+// übersichtlich aufgeteilt werden!
+
 // TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
+//void setupMemory();
+unsigned int readStatusInfo(FILE *source, char *const headerString, unsigned int *const imageCount, unsigned int *const imageWidth, unsigned int *const imageHeight, int const amountToRead);
+void readImagedata(FILE *source, unsigned char *const imageBuffer, unsigned char *const labelBuffer,int const imageCount ,int const amountToRead);
+unsigned int checkHeaderString(char header[]);
+
 
 // TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
 GrayScaleImageSeries *readImages(const char *path)
 {
     GrayScaleImageSeries *series = NULL;
+
+    // selbst geschriebene Variablen
+    FILE                    *readSource;
+    unsigned int            numberOfBytesToRead         = 0;
+    const unsigned int      amountOfStatusInfoToRead    = 1;
+    unsigned int            expectedHeader              = 0;
+    char                    headerString[sizeof(FILE_HEADER_STRING)] = "";
+
+    /*
+    char curChar = 0;
+    int i = 0;
+    */
     
+    readSource = fopen(path, "rb");
+    
+    if (readSource != NULL)
+    {
+        /*
+            // print entire source char by char
+            do
+            {
+                curChar = fgetc(readSource);
+                printf("%x ", curChar);
+                if (i >= 9)
+                {
+                    printf("\n");
+                    i = 0;
+                }
+                i++;
+            } while (curChar != EOF);
+            // print entire source char by char
+        */
+        series                  = calloc(sizeof(unsigned int) + 3* sizeof(headerString),  amountOfStatusInfoToRead);
+        series->images          = calloc(2*sizeof(unsigned int) + sizeof(headerString),  amountOfStatusInfoToRead);
+        
+        numberOfBytesToRead     = readStatusInfo(readSource, headerString, &(series->count), &(series->images->width), &(series->images->height), amountOfStatusInfoToRead);
+        
+        
+        expectedHeader          = checkHeaderString(headerString);
+
+        series->images->buffer  = calloc((series->count) * numberOfBytesToRead + 1, sizeof(GrayScalePixelType));
+        series->labels          = calloc((series->count) + 1,                       sizeof(&(series->labels)));
+
+        if (expectedHeader)
+        {
+            //printf("%d\n", series->images[0].width);
+            // series->images[1].width is not being set
+            // implement setting several amoundt of status info
+            // for when several images are bing read
+            // also adjust amoung of memory allocated for 
+            // staus info based on the number of images to be read
+            //printf("%d\n", series->images[1].width);
+            readImagedata(readSource, series->images->buffer, series->labels, series->count, numberOfBytesToRead);
+        }
+        else
+        {
+            printf("unexpected header!\n");
+        }
+        
+        
+        fclose(readSource);
+    }
+
     return series;
 }
 
 // TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
 void clearSeries(GrayScaleImageSeries *series)
 {
+    int i = 0;
+
+    // Write NULL into all memory spaces
+    
+    // this first for loop does not work
+    /*
+    for (i = 0; i < ((series->count) * (series->images->width) * (series->images->height)); i++)
+    {   
+        *(series->images->buffer + i * (series->images->width) * (series->images->height)) = '\0';
+    }
+    */
+    
+    for (i = 0; i < (series->count); i++)
+    {
+        *(series->labels + i) = '\0';
+    }
+    
+    series->count           = 0;
+    series->images->width   = 0;
+    series->images->height  = 0;
+    // Closse all allocated memory
+    // AND write NULL into every pointer
+    // so they can't be accessed
+    free(series->images->buffer);
+    series->images->buffer  = NULL;
+    free(series->labels);
+    series->labels          = NULL;
+    free(series->images);
+    series->images          = NULL;
+    free(series);
+    series                  = NULL;
+
 }
+
+
+//  reads string, pictureCount, pictureWidth, pictureHight
+unsigned int readStatusInfo(FILE *source, char *const headerString, unsigned int *const imageCount, unsigned int *const imageWidth, unsigned int *const imageHeight, int const amountToRead)
+{
+    unsigned int bytesToRead = 0;
+    
+    /*
+    int numred = 0;
+    int numred2 = 0;
+    int numred3 = 0;
+    int numred4 = 0;
+    */
+
+    //unsigned int imageCountBuffer = 0;
+    /*numred =*/ fread(headerString, 27,  1, source);
+    /*numred2 =*/ fread(imageCount,   2,      1, source);
+    /*numred3 =*/ fread(imageWidth,   2,     1, source);
+    /*numred4 =*/ fread(imageHeight,  2,    1, source);
+
+    bytesToRead = (*imageWidth) * (*imageHeight);
+    /*
+    printf("numred: %d\n", numred);
+    printf("stringsize: %lld\n", sizeof("__info2_image_file_format__"));
+    printf("string: %send\n", headerString);
+    printf("numred2: %d\n", numred2);
+    printf("count: %u\n", *imageCount);
+    printf("numred3: %d\n", numred3);
+    printf("width: %u\n", *imageWidth);
+    printf("numred4: %d\n", numred4);
+    printf("height %u\n", *imageHeight);
+    printf("bytes to read = %u\n", bytesToRead);
+    */
+    return bytesToRead;
+}
+
+//  reads the imagebytes and the label of all images
+void readImagedata(FILE *source, unsigned char *const imageBuffer, unsigned char *const labelBuffer,int const imageCount ,  int const amountOfBytes)
+{
+    int i = 0;
+
+    for (i = 0; i <= imageCount; i++)
+    {
+    fread((imageBuffer + i * amountOfBytes),    sizeof(&(imageBuffer)), amountOfBytes,  source);
+    fread((labelBuffer + i),                    sizeof(&(labelBuffer)), 1,              source);
+    }
+}
+
+unsigned int checkHeaderString(char header[])
+{
+    int i = 0;
+    int notIdenticall = 0;
+    char expectedHeader[sizeof(FILE_HEADER_STRING)] = FILE_HEADER_STRING;
+
+    for (i = 0; i < sizeof(FILE_HEADER_STRING); i++)
+    {
+        if (header[i] != expectedHeader[i])
+        {
+            notIdenticall = 1;
+        }
+        
+    }
+    printf("header identical? %d\n", !notIdenticall);
+    
+    return !notIdenticall;
+}
+

imageInputTests.c

@@ -9,19 +9,18 @@
 static void prepareImageFile(const char *path, unsigned short int width, unsigned short int height, unsigned int short numberOfImages, unsigned char label)
 {
     FILE *file = fopen(path, "wb");
-
+    
     if(file != NULL)
     {
         const char *fileTag = "__info2_image_file_format__";
         GrayScalePixelType *zeroBuffer = (GrayScalePixelType *)calloc(numberOfImages * width * height, sizeof(GrayScalePixelType));
-
         if(zeroBuffer != NULL)
         {
             fwrite(fileTag, sizeof(fileTag[0]), strlen(fileTag), file);
             fwrite(&numberOfImages, sizeof(numberOfImages), 1, file);
             fwrite(&width, sizeof(width), 1, file);
             fwrite(&height, sizeof(height), 1, file);
-
+            
             for(int i = 0; i < numberOfImages; i++)
             {
                 fwrite(zeroBuffer, sizeof(GrayScalePixelType), width * height, file);
@@ -30,7 +29,7 @@ static void prepareImageFile(const char *path, unsigned short int width, unsigne
 
             free(zeroBuffer);
         }
-
+        
         fclose(file);
     }
 }

testFile.info2

@@ -0,0 +1 @@
+some_tag