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rewrote read image data programm now sometimes works and sometime dosnt, because of faulty memory allocation

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This commit is contained in:
Jonas Hofmann 2025-11-30 01:44:31 +01:00
parent d59ffa6888
commit 0a909936ed
1 changed files with 122 additions and 13 deletions
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133
imageInput.c
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@ -32,16 +32,24 @@ GrayScaleImageSeries *readImages(const char *path)
if (readSource != NULL)
{
series = calloc(amountOfStatusInfoToRead, (3 * sizeof(unsigned int) + 3 * sizeof(headerString)));
series->images = calloc(amountOfStatusInfoToRead, (2 * sizeof(unsigned int) + sizeof(headerString)));
numberOfBytesToRead = readStatusInfo(readSource, series, headerString, sizeOfStausInfoElementsInBytes, amountOfStatusInfoToRead);
//Speicheralloziierung komplett umschreichen!!!!!
// Series reservieren mit größe einer grayscaleImageSeries
// ein series->count reservieren mit größe unsigned int
// series->labels reservieren mit zahl count und größe int
// series->images[i].buffer mit zahl series->count *numberOfBytesToRead und size of unsigned Char
expectedHeader = checkHeaderString(headerString);
series = calloc(amountOfStatusInfoToRead, (3 * sizeof(unsigned int) + 3 * sizeof(headerString)));
series->images = calloc(amountOfStatusInfoToRead, (2 * sizeof(unsigned int) + sizeof(headerString)));
numberOfBytesToRead = readStatusInfo(readSource, series, headerString, sizeOfStausInfoElementsInBytes, amountOfStatusInfoToRead);
expectedHeader = checkHeaderString(headerString);
// printf("llu %llu\n", series->count * numberOfBytesToRead * sizeof(GrayScalePixelType));
series->images->buffer = calloc(((series->count) * numberOfBytesToRead), sizeof(GrayScalePixelType));
series->labels = calloc((series->count), sizeof(&(series->labels)));
// printf("count %d\n", series->count);
// series->images[0].buffer = calloc(((series->count) * numberOfBytesToRead), sizeof(GrayScalePixelType));
series->labels = calloc((series->count), sizeof(&(series->labels)));
if (expectedHeader)
{
@ -49,7 +57,12 @@ GrayScaleImageSeries *readImages(const char *path)
//heightbuffer = series->images->height;
// reallocate memory so that each image width can be saved seperately
series->images = realloc(series->images, (series->count * (2 * sizeof(unsigned int) + sizeof(headerString))));
//series->images = realloc(series->images, (series->count * (2 * sizeof(unsigned int) + sizeof(headerString))));
for (int i = 1; i < series->count; i++)
{
series->images[i].buffer = calloc(numberOfBytesToRead, sizeof(unsigned char));
}
//series->images->width = widthbuffer;
//series->images->height = heightbuffer;
@ -63,11 +76,15 @@ GrayScaleImageSeries *readImages(const char *path)
for (int i = 0; i < series->count; i++)
{
// printf("hier1! \n");
series->images[i].width = series->images->width;
// printf("hier2! \n");
series->images[i].height = series->images->height;
// printf("hier2! \n");
}
readImagedata(readSource, series, numberOfBytesToRead);
// printf("hier4! \n");
}
else
@ -87,14 +104,55 @@ GrayScaleImageSeries *readImages(const char *path)
void clearSeries(GrayScaleImageSeries * series)
{
int i = 0;
int j = 0;
// Write NULL into all memory spaces
for (i = 0; i < series->count; i++)
{
for (j = 0; j < series->images[i].width * series->images[i].height; j++)
{
series->images[i].buffer[j] = 0;
}
series->labels[i] = 0;
series->images[i].width = 0;
series->images[i].height = 0;
}
// free all pointer
for (i = 0; i < series->count; i++)
{
free(series->images[i].buffer);
series->images[i].buffer = NULL;
}
series->count = 0;
free(series->images);
series->images = NULL;
free(series->labels);
series->labels = NULL;
free(series);
series = NULL;
printf("cleared\n");
/*
// Write NULL into all memory spaces
for (i = 0; i < ((series->count) * (series->images->width) * (series->images->height) / 4); i++)
{
*(series->images->buffer + i * 4 * (series->images->width) * (series->images->height)) = '\0';
}
for (i = 1; i < series->count; i++)
{
free(series->images[i].buffer);
series->images[i].buffer = NULL;
}
for (i = 0; i < (series->count); i++)
{
*(series->labels + i) = '\0';
@ -103,10 +161,12 @@ void clearSeries(GrayScaleImageSeries * series)
series->count = 0;
series->images->width = 0;
series->images->height = 0;
series->images = 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);
@ -115,7 +175,7 @@ void clearSeries(GrayScaleImageSeries * series)
series->images = NULL;
free(series);
series = NULL;
*/
}
@ -140,18 +200,67 @@ unsigned int readStatusInfo(FILE *const source, GrayScaleImageSeries *const seri
// reads the imagebytes and the label of all images
void readImagedata(FILE *const source, GrayScaleImageSeries *const series, int const amountToRead)
{
int i = 0;
int i = 0;
for (i = 0; i < series->count ; i++)
{
// int numbreadbuffer = 0;
// int numbreadlabel = 0;
// labelbuffer = 0;
// printf("amount11 %d\n", amountToRead);
// gedanke: &(series->images[i].buffer)
// geht: &(series->images->buffer[0]) +i*36)
// geht nicht: &series->images[i].buffer
fread(&series->images[i].buffer[0], 1, amountToRead, source);
fread(&(series->labels[i]), 1, 1, source);
// printf("label: %d\n", series->labels[i]);
// printf("amountToRead: %d\n", amountToRead);
/* numbreadbuffer =*/ fread(&series->images[i].buffer[0], 1, amountToRead, source);
/*
if (feof(source))
{
printf("EOF!! buffer\n");
}
if (ferror(source))
{
printf("ERROR!!! buffer\n");
}
// */
/*numbreadlabel =*/ fread(&series->labels[i], sizeof(*series->images->buffer), sizeof(*series->labels), source);
/*
if (feof(source))
{
printf("EOF!!\n label");
}
if (ferror(source))
{
printf("ERROR!!! label\n");
}
printf("numbreadbuffer: %d\n", numbreadbuffer);
printf("numbreadlabel: %d\n", numbreadlabel);
printf("label %d: %d\n", i, series->labels[i]);
// fread(&(series->labels[i]), sizeof(*series->images->buffer), sizeof(*series->labels), source);
// print complete imagebuffer
int k = 0;
for (int j = 0; j < amountToRead; j++)
{
printf("%x", series->images[i].buffer[j]);
k++;
if (k >= 9)
{
printf("\n");
k = 0;
}
}
printf("\n");
// */
}
}