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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-10-08 12:32:49 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-10-08 12:32:49 +0200
commitcfd27ef2ad8b005fd47ab41ef29b71d9e3d48201 (patch)
tree56cb8849a5df91b19b72fd4f48c79c343cd9bc5e /backend/pieusb_buffer.h
parentba8d09abe681600aad991f4a75e904615b7ed29f (diff)
Imported Upstream version 1.0.25upstream/1.0.25
Diffstat (limited to 'backend/pieusb_buffer.h')
-rw-r--r--backend/pieusb_buffer.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/backend/pieusb_buffer.h b/backend/pieusb_buffer.h
new file mode 100644
index 0000000..3724a40
--- /dev/null
+++ b/backend/pieusb_buffer.h
@@ -0,0 +1,93 @@
+/* sane - Scanner Access Now Easy.
+
+ pieusb_buffer.h
+
+ Copyright (C) 2012-2015 Jan Vleeshouwers, Michael Rickmann, Klaus Kaempf
+
+ This file is part of the SANE package.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, the authors of SANE give permission for
+ additional uses of the libraries contained in this release of SANE.
+
+ The exception is that, if you link a SANE library with other files
+ to produce an executable, this does not by itself cause the
+ resulting executable to be covered by the GNU General Public
+ License. Your use of that executable is in no way restricted on
+ account of linking the SANE library code into it.
+
+ This exception does not, however, invalidate any other reasons why
+ the executable file might be covered by the GNU General Public
+ License.
+
+ If you submit changes to SANE to the maintainers to be included in
+ a subsequent release, you agree by submitting the changes that
+ those changes may be distributed with this exception intact.
+
+ If you write modifications of your own for SANE, it is your choice
+ whether to permit this exception to apply to your modifications.
+ If you do not wish that, delete this exception notice. */
+
+#ifndef PIEUSB_BUFFER_H
+#define PIEUSB_BUFFER_H
+
+#include "pieusb.h"
+#include "../include/sane/sanei_ir.h"
+
+struct Pieusb_Read_Buffer
+{
+ SANE_Uint* data; /* image data - always store as 16 bit values; mmap'ed */
+ unsigned int data_size; /* size of mmap region */
+ SANE_Int data_file; /* associated file if memory mapped */
+ char buffer_name[L_tmpnam];
+
+ /* Buffer parameters */
+ SANE_Int width; /* number of pixels on a line */
+ SANE_Int height; /* number of lines in buffer */
+ SANE_Int colors; /* number of colors in a pixel */
+ SANE_Int depth; /* number of bits of a color */
+ SANE_Int packing_density; /* number of single color samples packed together */
+
+ /* Derived quantities
+ * All derived quantities pertain to the image, not to the buffer */
+ SANE_Int packet_size_bytes; /* number of bytes of a packet of samples = round_up(depth*packing_density/8) */
+ SANE_Int line_size_packets; /* number of packets on a single color line = round-down((width+packing_density-1)/packing_density) */
+ SANE_Int line_size_bytes; /* number of bytes on a single color line = line_size_packets*packet_size_bytes */
+ SANE_Int image_size_bytes; /* total number of bytes in the buffer (= colors * height * line_size_packets* packet_size_bytes) */
+ SANE_Int color_index_red; /* color index of the red color plane (-1 if not used) */
+ SANE_Int color_index_green; /* color index of the green color plane (-1 if not used) */
+ SANE_Int color_index_blue; /* color index of the blue color plane (-1 if not used) */
+ SANE_Int color_index_infrared; /* color index of the infrared color plane (-1 if not used) */
+
+ /* Reading - byte oriented */
+ SANE_Uint** p_read; /* array of pointers to next sample to read for each color plane */
+ SANE_Int read_index[4]; /* location where to read next (color-index, height-index, width-index, byte-index) */
+ SANE_Int bytes_read; /* number of bytes read from the buffer */
+ SANE_Int bytes_unread; /* number of bytes not yet read from the buffer */
+ SANE_Int bytes_written; /* number of bytes written to the buffer */
+
+ /* Writing */
+ SANE_Uint** p_write; /* array of pointers to next byte to write for each color plane */
+};
+
+void sanei_pieusb_buffer_get(struct Pieusb_Read_Buffer* buffer, SANE_Byte* data, SANE_Int max_len, SANE_Int* len);
+SANE_Status sanei_pieusb_buffer_create(struct Pieusb_Read_Buffer* buffer, SANE_Int width, SANE_Int height, SANE_Byte colors, SANE_Byte depth);
+void sanei_pieusb_buffer_delete(struct Pieusb_Read_Buffer* buffer);
+SANE_Int sanei_pieusb_buffer_put_full_color_line(struct Pieusb_Read_Buffer* buffer, void* line, int size);
+SANE_Int sanei_pieusb_buffer_put_single_color_line(struct Pieusb_Read_Buffer* buffer, SANE_Byte color, void* line, SANE_Int size);
+
+#endif /* PIEUSB_BUFFER_H */