1 files changed, 71 insertions, 0 deletions

diff --git a/apps/plugins/imageviewer/jpegp/FILEGETC.c b/apps/plugins/imageviewer/jpegp/FILEGETC.c
new file mode 100644
index 0000000000..bb7f0c485f
--- /dev/null
+++ b/apps/plugins/imageviewer/jpegp/FILEGETC.c
@@ -0,0 +1,71 @@
+#include "rb_glue.h"
+
+static int fd;
+
+extern int GETC(void)
+{
+    unsigned char x;
+    rb->read(fd, &x, 1);
+    return x;
+}
+
+// multibyte readers: host-endian independent - if evaluated in right order (ie. don't optimize)
+
+extern int GETWbi(void)         // 16-bit big-endian
+{
+    return ( GETC()<<8 ) | GETC();
+}
+
+extern int GETDbi(void)         // 32-bit big-endian
+{
+    return ( GETC()<<24 ) | ( GETC()<<16 ) | ( GETC()<<8 ) | GETC();
+}
+
+extern int GETWli(void)         // 16-bit little-endian
+{
+    return GETC() | ( GETC()<<8 );
+}
+
+extern int GETDli(void)         // 32-bit little-endian
+{
+    return GETC() | ( GETC()<<8 ) | ( GETC()<<16 ) | ( GETC()<<24 );
+}
+
+// seek
+
+extern void SEEK(int d)
+{
+    rb->lseek(fd, d, SEEK_CUR);
+}
+
+extern void POS(int d)
+{
+    rb->lseek(fd, d, SEEK_SET);
+}
+
+extern int TELL(void)
+{
+    return rb->lseek(fd, 0, SEEK_CUR);
+}
+
+// OPEN/CLOSE file
+
+extern void *OPEN(char *f)
+{
+    printf("Opening %s\n", f);
+
+    fd = rb->open(f,O_RDONLY);
+
+    if (  fd < 0 )
+    {
+        printf("Error opening %s\n", f);
+        return NULL;
+    }
+
+    return &fd;
+}
+
+extern int CLOSE(void)
+{
+    return rb->close(fd);
+}