Imported Upstream version 1.0.25upstream/1.0.25

1 files changed, 93 insertions, 0 deletions

diff --git a/backend/pieusb_buffer.h b/backend/pieusb_buffer.h
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+++ b/backend/pieusb_buffer.h
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+/* 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 */