Changeset 798 for soft/giet_vm/applications/rosenfeld/nrc2/src/nrio2.c

Timestamp:

Mar 2, 2016, 3:08:27 PM (8 years ago)

Author:

meunier

Message:

• Bug fixes in Rosenfeld

File:

• soft/giet_vm/applications/rosenfeld/nrc2/src/nrio2.c (modified) (3 diffs)

soft/giet_vm/applications/rosenfeld/nrc2/src/nrio2.c

@@ -13 +13 @@
 
 #include <stdio.h>
-#include <stddef.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "nrc_os_config.h"
+
+#if TARGET_OS == LINUX
+    #include <sys/types.h>
+    #include <sys/stat.h>
+    #include <fcntl.h>
+    #include <unistd.h>
+#endif
+
+
 #include "mypredef.h"
 #include "nrtype.h"
@@ -28 +37 @@
 #include "nrio1.h"
 #include "nrio2.h"
+
+#define isalnum(x) (((x) >= 0x30 && (x) <= 0x39) \
+                 || ((x) >= 0x41 && (x) <= 0x5A) \
+                 || ((x) >= 0x61 && (x) <= 0x7A))
+
 
 /*
@@ -870 +884 @@
     }    
 }
+
+
+
+/* --------------------------------------- */
+static char * readitem(int fd, char * buffer)
+/* --------------------------------------- */
+{
+    char * aux;
+    int k;
+    int n;
+    
+    k = 0;
+    aux = buffer;
+    while (1) {
+        n = read(fd, aux, 1);
+        if (n == 0) {
+            break;
+        }
+        switch (k) {
+            case 0:
+                if (*aux == '#') {
+                    k = 1;
+                }
+                if (isalnum(*aux)) {
+                    k = 2;
+                    aux++;
+                }
+                break;
+            case 1:
+                if (*aux == 0xA) {
+                    k = 0;
+                }
+                break;
+            case 2:
+                if (!isalnum(*aux)) {
+                    *aux = 0;
+                    return buffer;
+                }
+                aux++;
+                break;
+        }
+    }
+    *aux = 0;
+    return buffer;
+}
+
+
+/* ------------------------------------------------- */
+static void ReadPGMrow(int fd, int width, uint8 * line)
+/* ------------------------------------------------- */
+{
+    read(fd, &line[0], sizeof(uint8) * width);
+}
+
+
+/* -------------------------------------------------- */
+static void WritePGMrow(uint8 * line, int width, int fd)
+/* -------------------------------------------------- */
+{
+    write(fd, &line[0], sizeof(uint8) * width);
+}
+
+
+/* ----------------------------------------------------------------------------------------------- */
+IMAGE_EXPORT(uint8 **) LoadPGM_ui8matrix(char * filename, int * nrl, int * nrh, int * ncl, int * nch)
+/* ----------------------------------------------------------------------------------------------- */
+{
+    // only for P5 binary type, not for text type
+    
+    int height, width, gris;
+    uint8 ** m;
+    int fd;
+    
+    char buffer[80];
+    int i;
+    
+    // open file
+    fd = open(filename, O_RDONLY);
+    if (fd < 0) {
+        printf("*** Error: Can't open file %s in %s.\n", filename, __func__);
+    }
+    
+    // read PGM header
+    readitem(fd, &buffer[0]);
+    if (strcmp(&buffer[0], "P5") != 0) {
+        printf("*** Error: Invalid file header in file %s\n", filename);
+    }
+    
+    width  = atoi(readitem(fd, &buffer[0]));
+    height = atoi(readitem(fd, &buffer[0]));
+    gris   = atoi(readitem(fd, &buffer[0]));
+    
+    *nrl = 0;
+    *nrh = height - 1;
+    *ncl = 0;
+    *nch = width - 1;
+    m = ui8matrix(*nrl, *nrh, *ncl, *nch);
+    
+    for (i = 0; i < height; i++) {
+        ReadPGMrow(fd, width, m[i]);
+    }
+    
+    close(fd);
+    
+    return m;
+}
+
+
+/* ----------------------------------------------------------------------------------------------- */
+IMAGE_EXPORT(void) SavePGM_ui8matrix(uint8 ** m, int nrl, int nrh, int ncl, int nch, char * filename)
+/* ----------------------------------------------------------------------------------------------- */
+{
+    int nrow = nrh - nrl + 1;
+    int ncol = nch - ncl + 1;
+    
+    char buffer[80];
+    
+    int fd;
+    int i;
+    
+    fd = open(filename, O_TRUNC | O_CREAT);
+    if (fd < 0) {
+        printf("*** Error: Impossible to open file %s in %s\n", filename, __func__);
+    }
+    
+    /* enregistrement de l'image au format rpgm */
+    snprintf(buffer, 80, "P5\n%d %d\n255\n", ncol, nrow);
+    write(fd, buffer, strlen(buffer));
+    for (i = nrl; i <= nrh; i++) {
+        WritePGMrow(m[i], ncol, fd);
+    }
+    
+    /* fermeture du fichier */
+    close(fd);
+}
+
+
+