1 files changed, 79 insertions, 0 deletions
diff --git a/backend/st400.h b/backend/st400.h
new file mode 100644
index 0000000..246ba80
--- /dev/null
+++ b/backend/st400.h
@@ -0,0 +1,79 @@
+#ifndef st400_h
+#define st400_h
+
+#define ST400_CONFIG_FILE		"st400.conf"
+#define ST400_DEFAULT_DEVICE	"/dev/scanner"
+
+/* maximum scanning area in inch (guessed) */
+#define ST400_MAX_X		8.5
+#define ST400_MAX_Y		12.0
+
+enum ST400_Option {
+	OPT_NUM_OPTS = 0,
+
+	OPT_MODE_GROUP,
+	OPT_RESOLUTION,
+	OPT_DEPTH,
+	OPT_THRESHOLD,
+
+	OPT_GEOMETRY_GROUP,
+	OPT_TL_X,
+	OPT_TL_Y,
+	OPT_BR_X,
+	OPT_BR_Y,
+
+	NUM_OPTIONS		/* must be last */
+};
+
+typedef struct {
+	size_t inq_voffset;		/* offset in INQUIRY result */
+	char *inq_vendor;
+	size_t inq_moffset;		/* offset in INQUIRY result */
+	char *inq_model;
+
+	size_t bits;			/* 6 or 8 */
+	unsigned long bufsize;	/* internal buffer of scanner */
+	unsigned long maxread;	/* max bytes to read in a cmd (0 = no limit) */
+	SANE_Int *dpi_list;		/* NULL for default list */
+
+	char *sane_vendor;
+	char *sane_model;
+	char *sane_type;
+} ST400_Model;
+
+
+typedef struct ST400_Device {
+	struct ST400_Device *next;
+
+	SANE_Device sane;
+	SANE_Parameters params;
+	SANE_Option_Descriptor opt[NUM_OPTIONS];
+	SANE_Word val[NUM_OPTIONS];
+
+	struct {
+		unsigned open		:1;
+		unsigned scanning	:1;
+		unsigned eof		:1;
+	} status;
+
+	/* pixel values of entire scan window - for convenience */
+	unsigned short x, y, w, h;
+
+	int fd;						/* SCSI filedescriptor */
+
+	/* backend buffer */
+	SANE_Byte *buffer;
+	size_t bufsize;
+	SANE_Byte *bufp;					/* next byte to transfer */
+	size_t bytes_in_buffer;
+
+	ST400_Model *model;
+
+	/* scanner buffer */
+	unsigned short wy, wh;				/* current subwindow */
+	unsigned long bytes_in_scanner;
+	unsigned short lines_to_read;
+} ST400_Device;
+
+#endif /* st400_h */
+/* The End */