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replaced hardcoded elements with variables and cleaned up Programm

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This commit is contained in:
Jonas Hofmann 2025-11-22 17:07:13 +01:00
parent e9d3ddb999
commit ccfceba21c
1 changed files with 28 additions and 33 deletions
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43
imageInput.c
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@ -7,14 +7,8 @@
#define FILE_HEADER_STRING "__info2_image_file_format__"
// Tests passed
// Rethink logic
// Cleanup Programm
// merge with others to test in entirity
// DONE Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
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 readStatusInfo (FILE *source, char *const headerString, GrayScaleImageSeries *series, int const sizeToRead, int const amountToRead);
void readImagedata (FILE *source, GrayScaleImageSeries *series, int const amountToRead);
unsigned int checkHeaderString (char header[]);
@ -23,11 +17,10 @@ unsigned int checkHeaderString(char header[]);
GrayScaleImageSeries *readImages(const char *path)
{
GrayScaleImageSeries *series = NULL;
// selbst geschriebene Variablen
FILE *readSource;
unsigned int numberOfBytesToRead = 0;
FILE *readSource = 0;
const unsigned int sizeOfStausInfoElementsInBytes = 2;
const unsigned int amountOfStatusInfoToRead = 1;
unsigned int numberOfBytesToRead = 0;
unsigned int expectedHeader = 0;
char headerString[sizeof(FILE_HEADER_STRING)] = "";
@ -39,7 +32,7 @@ GrayScaleImageSeries *readImages(const char *path)
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);
numberOfBytesToRead = readStatusInfo(readSource, headerString, series, sizeOfStausInfoElementsInBytes, amountOfStatusInfoToRead);
expectedHeader = checkHeaderString(headerString);
@ -107,19 +100,19 @@ void clearSeries(GrayScaleImageSeries *series)
}
// 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)
// reads headerString, pictureCount, pictureWidth, pictureHight
unsigned int readStatusInfo(FILE *source, char *const headerString, GrayScaleImageSeries *series, int const sizeToRead, int const amountToRead)
{
unsigned int bytesToRead = 0;
//unsigned int imageCountBuffer = 0;
fread(headerString, 27, 1, source);
fread(imageCount, 2, 1, source);
fread(imageWidth, 2, 1, source);
fread(imageHeight, 2, 1, source);
fread(headerString, sizeof(FILE_HEADER_STRING) - 1, amountToRead, source);
fread(&(series->count), sizeToRead, amountToRead, source);
fread(&(series->images->width), sizeToRead, amountToRead, source);
fread(&(series->images->height), sizeToRead, amountToRead, source);
bytesToRead = (series->images->width) * (series->images->height);
bytesToRead = (*imageWidth) * (*imageHeight);
return bytesToRead;
}
@ -130,30 +123,32 @@ void readImagedata(FILE *source, GrayScaleImageSeries *series, int const amount
{
int i = 0;
for (i = 0; i < series->count ; i++)
{
fread(&(series->images->buffer[i]), 1, amountOfBytes, source);
fread(&(series->labels[i]), 1, 1, source);
printf("label: %x\n", series->labels[i]);
fread(&(series->images->buffer[i]), sizeof(*series->images->buffer), amountOfBytes, source);
fread(&(series->labels[i]), sizeof(*series->images->buffer), sizeof(*series->labels), source);
}
}
// checks if the read headerString matches the expected headerString
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;
}
}
return !notIdenticall;
}