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2 changed files with 29 additions and 25 deletions

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+25 -22
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@@ -7,36 +7,39 @@
#define FILE_HEADER_STRING "__info2_image_file_format__" #define FILE_HEADER_STRING "__info2_image_file_format__"
// TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei // TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
void setParameters(const char buffer[], unsigned int* imageCount, int* width, int* height);
int checkString (FILE *file){ //Checks if String at the start of File equals expected Format (0 for wrong 1 for right) void allocateMemory(GrayScaleImageSeries *s, const int imageCount, const int width, const int height);
if (file == NULL){ //returns 0 for empty file
return 0;
}
char expectedString[] = FILE_HEADER_STRING;
char actualString[BUFFER_SIZE];
rewind(file);
size_t bytesRead = fread(actualString, 1,27 , file); //Stores Bytes of start of File to actualString
if (bytesRead != 27){
return 0;} //Returns 0 if File is to short
actualString[27] = '\0';
if (strcmp(actualString, expectedString) != 0){
return 0;
}
else{
return 1;
}
}
// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen // TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
GrayScaleImageSeries *readImages(const char *path) GrayScaleImageSeries *readImages(const char *path)
{ {
GrayScaleImageSeries *series = NULL; GrayScaleImageSeries *series = NULL;
// hier Niko Stuff
// create char array buffer with bytes containing initialization information
// TODO some kind of logic to get correct address in binary file
char initBuffer[3];
/*
int readBytes = fread(initBuffer, 1, 3, //file);
*/
unsigned int* imageCount = &(series->count); // sets a pointer for int variable count in struct
setParameters(initBuffer, imageCount, series->images->width, series->images->height);
allocateMemory(*imageCount, series->images->width, series->images->height);
return series; return series;
} }
void setParameters(const char buffer[], unsigned int* imageCount, int* width, int* height) { // sets the parameters
*imageCount = (int) buffer[0];
*width = (int) buffer[1];
*height = (int) buffer[2];
}
void allocateMemory(GrayScaleImageSeries s, const int imageCount, const int width, const int height) {
for (int i = 0; i < imageCount; i++) {
s->images[i].buffer = (unsigned char *) malloc(width * height * sizeof(unsigned char)); // allocates memory for every image in the series
}
}
// TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt // TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
void clearSeries(GrayScaleImageSeries *series) void clearSeries(GrayScaleImageSeries *series)
{ {
+4 -3
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@@ -23,8 +23,8 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
void clearMatrix(Matrix *matrix) void clearMatrix(Matrix *matrix)
{ {
free(matrix->buffer); free(matrix.buffer);
matrix->buffer = NULL; matrix.buffer = NULL;
} }
void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx) void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
@@ -55,7 +55,8 @@ Matrix add(const Matrix matrix1, const Matrix matrix2)
Matrix MatrixErgebnis = createMatrix(matrix1.rows, matrix1.cols); //Creating Result Matrix Matrix MatrixErgebnis = createMatrix(matrix1.rows, matrix1.cols); //Creating Result Matrix
if(matrix1.cols != matrix2.cols || matrix1.rows != matrix2.rows){ if(matrix1.cols != matrix2.cols || matrix1.rows != matrix2.rows){
printf("Matrix dimensions do not match\n"); //Error Message if dimensions of Input Matrixes are not identical printf("Matrix dimensions do not match\n"); //Error Message if dimensions of Input Matrixes are not identical
clearMatrix(&MatrixErgebnis); clearMatrix(MatrixErgebnis);
MatrixErgebnis = NULL;
return MatrixErgebnis; return MatrixErgebnis;
} }
else{ else{