Angefangen bildanzahl und groese aus binaerdatei zu lesen

.gitignore

@@ -1,61 +1,4 @@
-# ---> C
-# Prerequisites
-*.d
-
-# Object files
+mnist
+runTests
 *.o
-*.ko
-*.obj
-*.elf
-
-# Linker output
-*.ilk
-*.map
-*.exp
-
-# Precompiled Headers
-*.gch
-*.pch
-
-# Libraries
-*.lib
-*.la
-*.lo
-
-# Shared objects (inc. Windows DLLs)
-*.dll
-*.so
-*.so.*
-*.dylib
-
-# Executables
 *.exe
-*.out
-*.app
-*.i*86
-*.x86_64
-*.hex
-Startcode/mnist
-Startcode/runTests
-
-# Debug files
-*.dSYM/
-*.su
-*.idb
-*.pdb
-
-# Kernel Module Compile Results
-*.mod*
-*.cmd
-.tmp_versions/
-modules.order
-Module.symvers
-Mkfile.old
-dkms.conf
-
-# IDE folders
-.vscode/
-.idea/
-
-# macOS
-.DS_Store

Startcode/imageInput.c

@@ -1,22 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "imageInput.h"
-
-#define BUFFER_SIZE 100
-#define FILE_HEADER_STRING "__info2_image_file_format__"
-
-// TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
-
-// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
-GrayScaleImageSeries *readImages(const char *path)
-{
-    GrayScaleImageSeries *series = NULL;
-    
-    return series;
-}
-
-// TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
-void clearSeries(GrayScaleImageSeries *series)
-{
-}

imageInput.c

@@ -0,0 +1,69 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "imageInput.h"
+
+#define BUFFER_SIZE 100
+#define FILE_HEADER_STRING "__info2_image_file_format__"
+#define FILE_HEADER_SIZE (sizeof(FILE_HEADER_STRING)-1)
+ 
+
+// TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
+FILE *checkFile(const char *path)
+{
+    FILE *datei = fopen(path,"rb");
+    if (datei == NULL) 
+    {
+        perror("Datei konnte nicht geoeffnet werden");
+        return NULL;
+    }
+    char buffer[FILE_HEADER_SIZE+1];
+    if (fread(buffer,1,FILE_HEADER_SIZE,datei)!=FILE_HEADER_SIZE)
+    {
+        perror("Header konnte nicht eingelessen werden");
+        fclose(datei);
+        return NULL;
+    }
+    buffer[FILE_HEADER_SIZE] = '\0';
+    if (strcmp(buffer,FILE_HEADER_STRING)!=0)
+    {
+        printf("Falscher Dateikopf");
+        //printf("\n%s",buffer);
+        //printf("\n%s",FILE_HEADER_STRING);
+        //printf("\n%d",strcmp(buffer,FILE_HEADER_STRING));
+        fclose(datei);
+        return NULL;
+    }
+    return datei;
+}
+
+// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
+GrayScaleImageSeries *readImages(const char *path)
+{
+    FILE *datei = checkFile(path);
+    if (datei==NULL)
+    {
+        return NULL;
+    }
+    unsigned short image_count, width, height;
+    fread(&image_count,1,sizeof(unsigned short),datei);
+    fread(&width,1,sizeof(unsigned short),datei);
+    fread(&height,1,sizeof(unsigned short),datei);
+    //printf("%u Bilder und %u mal %u",image_count,width,height);
+    
+    fclose(datei);
+
+
+
+
+
+
+    GrayScaleImageSeries *series = NULL;
+    
+    return series;
+}
+
+// TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
+void clearSeries(GrayScaleImageSeries *series)
+{
+}

imageInput.h

@@ -19,5 +19,5 @@ typedef struct
 
 GrayScaleImageSeries *readImages(const char *path);
 void clearSeries(GrayScaleImageSeries *series);
-
+FILE *checkFile(const char *path);
 #endif

imageInputTests.c

@@ -54,7 +54,7 @@ void test_readImagesReturnsCorrectImageWidth(void)
     GrayScaleImageSeries *series = NULL;
     const unsigned short expectedWidth = 10;
     const char *path = "testFile.info2";
-    prepareImageFile(path, expectedWidth, 8, 2, 1);
+    prepareImageFile(path, 8, expectedWidth, 2, 1);
     series = readImages(path);
     TEST_ASSERT_NOT_NULL(series);
     TEST_ASSERT_NOT_NULL(series->images);
@@ -70,7 +70,7 @@ void test_readImagesReturnsCorrectImageHeight(void)
     GrayScaleImageSeries *series = NULL;
     const unsigned short expectedHeight = 10;
     const char *path = "testFile.info2";
-    prepareImageFile(path, 8, expectedHeight, 2, 1);
+    prepareImageFile(path, expectedHeight, 8, 2, 1);
     series = readImages(path);
     TEST_ASSERT_NOT_NULL(series);
     TEST_ASSERT_NOT_NULL(series->images);

main.c

@@ -1,11 +1,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include "imageInput.h"
-#include "mnistVisualization.h"
-#include "neuralNetwork.h"
+//#include "mnistVisualization.h"
+//#include "neuralNetwork.h"
 
 int main(int argc, char *argv[])
 {
+    readImages("mnist_test.info2");
+    /*
     const unsigned int windowWidth = 800;
     const unsigned int windowHeight = 600;
 
@@ -65,4 +67,5 @@ int main(int argc, char *argv[])
     }
 
     return exitCode;
+    */
 }

matrixTests.c

@@ -71,32 +71,6 @@ void test_addFailsOnDifferentInputDimensions(void)
     TEST_ASSERT_EQUAL_UINT32(0, result.cols);
 }
 
-void test_addSupportsBroadcasting(void)
-{
-    MatrixType buffer1[] = {1, 2, 3, 4, 5, 6};
-    MatrixType buffer2[] = {7, 8};
-    Matrix matrix1 = {.rows=2, .cols=3, .buffer=buffer1};
-    Matrix matrix2 = {.rows=2, .cols=1, .buffer=buffer2};
-
-    Matrix result1 = add(matrix1, matrix2);
-    Matrix result2 = add(matrix2, matrix1);
-
-    float expectedResults[] = {8, 9, 10, 12, 13, 14};
-
-    TEST_ASSERT_EQUAL_UINT32(matrix1.rows, result1.rows);
-    TEST_ASSERT_EQUAL_UINT32(matrix1.cols, result1.cols);
-    TEST_ASSERT_EQUAL_UINT32(matrix1.rows, result2.rows);
-    TEST_ASSERT_EQUAL_UINT32(matrix1.cols, result2.cols);
-
-    TEST_ASSERT_EQUAL_INT(sizeof(expectedResults)/sizeof(expectedResults[0]), result1.rows * result1.cols);
-    TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, result1.buffer, result1.cols * result1.rows);
-    TEST_ASSERT_EQUAL_INT(sizeof(expectedResults)/sizeof(expectedResults[0]), result2.rows * result2.cols);
-    TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, result2.buffer, result2.cols * result2.rows);
-
-    free(result1.buffer);
-    free(result2.buffer);
-}
-
 void test_multiplyReturnsCorrectResults(void)
 {
     MatrixType buffer1[] = {1, 2, 3, 4, 5, 6};
@@ -164,7 +138,7 @@ void test_setMatrixAtFailsOnIndicesOutOfRange(void)
     Matrix matrixToTest = {.rows=2, .cols=3, .buffer=buffer};
 
     setMatrixAt(-1, matrixToTest, 2, 3);
-    TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, matrixToTest.buffer, sizeof(buffer)/sizeof(MatrixType));
+    TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, matrixToTest.buffer, matrixToTest.cols * matrixToTest.rows);
 }
 
 void setUp(void) {
@@ -185,7 +159,6 @@ int main()
     RUN_TEST(test_clearMatrixSetsMembersToNull);
     RUN_TEST(test_addReturnsCorrectResult);
     RUN_TEST(test_addFailsOnDifferentInputDimensions);
-    RUN_TEST(test_addSupportsBroadcasting);
     RUN_TEST(test_multiplyReturnsCorrectResults);
     RUN_TEST(test_multiplyFailsOnWrongInputDimensions);
     RUN_TEST(test_getMatrixAtReturnsCorrectResult);