Started working on ImageInput, didnt finish and doesnt compile yet

This commit is contained in:
Niko Rost 2025-11-24 14:32:40 +01:00
parent 2ee6db1268
commit 65da22f564
2 changed files with 39 additions and 29 deletions

View File

@ -31,45 +31,48 @@ int checkString (FILE *file){ //Checks if String at the start of File equals exp
}
void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, unsigned int* height);
void allocateMemory(GrayScaleImageSeries *s, const int imageCount, const int width, const int height);
void allocateMemory(GrayScaleImageSeries *series, const int imageCount, const int width, const int height);
// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
GrayScaleImageSeries *readImages(const char *path)
{
FILE* file = fopen(path, "rb");
// TODO open binary file from file name
GrayScaleImageSeries *series = malloc(sizeof(GrayScaleImageSeries));
GrayScaleImage *image = malloc(sizeof(GrayScaleImage));
series->images = image;
if(!(checkString(file)))
if(!(checkString(file)))
fclose(file);
return NULL;
// TODO open binary file from file name
unsigned int width, height; //uninitialised Variables, will be set by setparamters
unsigned int* imageCount = &(series->count); // sets a pointer for int variable count in struct
printf("%d", *imageCount);
unsigned int* width = &(series->images->width);
//printf("%d", *width);
setParameters(file, imageCount, width, &(series->images->height));
printf("BP3\n");
allocateMemory(series, *imageCount, series->images->width, series->images->height);
printf("BP4\n");
//allocateMemoryLabels();
for(int i = (series->images->width * series->images->height) - 1; i >= 0; i--)
{
fread(&(series->images->buffer[i]), sizeof(GrayScalePixelType), 1, file);
GrayscaleImageSeries *series = malloc(sizeof(GrayScaleImageSeries)); //Reserving memory for series
setParameters(file, &(series->count), &width, &height); //setting parameters taken from image file
if(!allocateMemory(series, width, height)){
clearSeries(series); //If Memory couldnt be correctly allocated a clearing is necessary
}
//Getting image data
for(int i = 0; i < series.count ; i++){ //Iterating for every image
for(int j = 0; j < series.count; j++){ //Iterating for every pixel
fread(&(series->images[i].buffer[j]), sizeof(GrayScalePixelType), 1, file);
}
}
fclose(file);
printf("BP5\n");
return series;
}
// TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
void clearSeries(GrayScaleImageSeries *series)
{
for(size_t i = series->count - 1; i >= 0; i--)
printf("ClearSeries BP1\n");
for(int i = series->count - 1; i >= 0; i--)
{
free(series->images+series->count*sizeof(GrayScaleImage)*i);
free(series->images+series->count*sizeof(GrayScaleImage)*i);//Muss Falsch sein
free(series->labels+series->count*sizeof(unsigned char)*i);
}
printf("ClearSeries BP2\n");
series->images = NULL;
series->labels = NULL;
@ -78,7 +81,7 @@ void clearSeries(GrayScaleImageSeries *series)
series = NULL;
}
void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, unsigned int* height) { // sets the parameters
printf("BP1");
char buffer[3];
fseek(file, 27, SEEK_SET);
@ -90,18 +93,18 @@ void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, un
*width = (int) buffer[1];
*height = (int) buffer[2];
printf("BP2\n");
printf("%d\n", *imageCount);
printf("%d\n", *width);
printf("%d\n", *height);
// TODO allocate memory for labels array (in imageInput.h) -> Done in allocate Memory
// TODO read from file and write in 2d arry, write label in labels array, repeat for imageCount -> done in readImages
}
// change this to createMatrix?
void allocateMemory(GrayScaleImageSeries* s, const int imageCount, const int width, const int height) {
void allocateMemory(GrayScaleImageSeries *series, const int imageCount, const int width, const int height) {
series->images = malloc (sizeof(GrayScaleImage) * imageCount); //Reserving Memory for Images Array
series->labels = malloc (series->count * sizeof(unsigned char)); //One Label for every Image
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
s->labels = malloc(width * height * sizeof(unsigned char));
series->images[i].buffer = (unsigned char *) malloc(width * height * sizeof(unsigned char)); // allocates memory for every image in the series
}
}

View File

@ -39,14 +39,20 @@ static void prepareImageFile(const char *path, unsigned short int width, unsigne
void test_readImagesReturnsCorrectNumberOfImages(void)
{
GrayScaleImageSeries *series = NULL;
const unsigned short expectedNumberOfImages = 2;
const char *path = "testFile.info2";
prepareImageFile(path, 8, 8, expectedNumberOfImages, 1);
series = readImages(path);
TEST_ASSERT_NOT_NULL(series);
TEST_ASSERT_EQUAL_UINT16(expectedNumberOfImages, series->count);
clearSeries(series);
printf("Test 1 BP5\n");
remove(path);
printf("Test 1 BP6\n");
}
void test_readImagesReturnsCorrectImageWidth(void)
@ -133,6 +139,7 @@ int main()
printf("\n============================\nImage input tests\n============================\n");
RUN_TEST(test_readImagesReturnsCorrectNumberOfImages);
printf("BP Check1 complete");
RUN_TEST(test_readImagesReturnsCorrectImageWidth);
RUN_TEST(test_readImagesReturnsCorrectImageHeight);
RUN_TEST(test_readImagesReturnsCorrectLabels);