First commit

17 files changed, 1688 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a1a0901
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.o
+*.s
+*.a
+bin/cv-*
diff --git a/COPYING.txt b/COPYING.txt
new file mode 100644
index 0000000..53d3305
--- /dev/null
+++ b/COPYING.txt
@@ -0,0 +1,2 @@
+(C) 2019	Alejandro Colomar
+All rights reserved!
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d52b8c4
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,249 @@
+#! /usr/bin/make -f
+VERSION		= 0
+PATCHLEVEL	= 0
+SUBLEVEL	=
+EXTRAVERSION	= ~a1
+NAME		=
+
+export	VERSION
+export	PATCHLEVEL
+export	SUBLEVEL
+
+################################################################################
+# *AUTHOR*
+
+# EMAIL		"1903716@gmail.com"
+# FULL NAME	"Alejandro Colomar Andrés"
+
+################################################################################
+# *DOCUMENTATION*
+# To see a list of typical targets execute "make help"
+# More info can be located in ./README.txt
+# Comments in this file are targeted only to the developer, do not
+# expect to learn how to build mine-sweeper reading this file.
+
+################################################################################
+# Beautify output
+# ---------------------------------------------------------------------------
+# Prefix commands with $(Q) - that's useful
+# for commands that shall be hidden in non-verbose mode.
+#
+#	$(Q)some command here
+#
+# If BUILD_VERBOSE equals 0 then the above command will be hidden.
+# If BUILD_VERBOSE equals 1 then the above command is displayed.
+#
+# To put more focus on warnings, be less verbose as default
+# Use 'make V=1' to see the full commands
+
+ifeq ("$(origin V)","command line")
+  BUILD_VERBOSE = $(V)
+endif
+ifndef BUILD_VERBOSE
+  BUILD_VERBOSE = 0
+endif
+
+ifeq ($(BUILD_VERBOSE), 1)
+  Q =
+else
+  Q = @
+endif
+
+# If the user is running make -s (silent mode), suppress echoing of
+# commands
+
+ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
+  Q = @
+endif
+
+export	Q
+export	BUILD_VERBOSE
+
+################################################################################
+# Do not print "Entering directory ...",
+# but we want to display it when entering to the output directory
+# so that IDEs/editors are able to understand relative filenames.
+MAKEFLAGS += --no-print-directory
+
+################################################################################
+PROGRAMVERSION	= $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
+export	PROGRAMVERSION
+
+################################################################################
+# directories
+
+MAIN_DIR	= $(CURDIR)
+
+BIN_DIR		= $(CURDIR)/bin/
+INC_DIR		= $(CURDIR)/inc/
+SRC_DIR		= $(CURDIR)/src/
+TMP_DIR		= $(CURDIR)/tmp/
+
+export	MAIN_DIR
+export	BIN_DIR
+export	INC_DIR
+export	SRC_DIR
+export	TMP_DIR
+
+# FIXME: Set local or not local when building a package
+INSTALL_BIN_DIR		= /usr/local/bin/
+#INSTALL_BIN_DIR	= /usr/bin/
+INSTALL_SHARE_DIR	= /usr/local/share/
+#INSTALL_SHARE_DIR	= /usr/share/
+INSTALL_VAR_DIR		= /var/local/
+#INSTALL_VAR_DIR	= /var/lib/
+
+export	INSTALL_DIR
+export	INSTALL_SHARE_DIR
+
+################################################################################
+# Make variables (CC, etc...)
+  CC	= gcc
+  CXX	= g++
+  AS	= as
+  AR	= ar
+  LD	= ld
+  SZ	= size --format=SysV
+
+export	CC
+export	CXX
+export	AS
+export	AR
+export	LD
+export	SZ
+
+################################################################################
+# cflags
+CFLAGS_STD	= -std=gnu17
+
+CFLAGS_OPT	= -O3
+CFLAGS_OPT     += -march=native
+CFLAGS_OPT     += -flto
+
+CFLAGS_W	= -Wall
+CFLAGS_W       += -Wextra
+CFLAGS_W       += -Wstrict-prototypes
+CFLAGS_W       += -Werror
+
+CFLAGS_PKG	= `pkg-config --cflags opencv`
+CFLAGS_PKG     += `pkg-config --cflags libalx-cv`
+CFLAGS_PKG     += `pkg-config --cflags libalx-ocr`
+CFLAGS_PKG     += `pkg-config --cflags libalx-zbar`
+CFLAGS_PKG     += `pkg-config --cflags libalx-base`
+
+CFLAGS_D	= -D PROG_VERSION=\"$(PROGRAMVERSION)\"
+CFLAGS_D       += -D INSTALL_SHARE_DIR=\"$(INSTALL_SHARE_DIR)\"
+CFLAGS_D       += -D INSTALL_VAR_DIR=\"$(INSTALL_VAR_DIR)\"
+
+CFLAGS		= $(CFLAGS_STD)
+CFLAGS         += $(CFLAGS_OPT)
+CFLAGS         += $(CFLAGS_W)
+CFLAGS         += $(CFLAGS_PKG)
+CFLAGS         += $(CFLAGS_D)
+
+export	CFLAGS
+
+################################################################################
+# libs
+LIBS_OPT	= -O3
+LIBS_OPT       += -march=native
+LIBS_OPT       += -flto
+LIBS_OPT       += -fuse-linker-plugin
+
+LIBS_PKG	= `pkg-config --libs libalx-cv`
+LIBS_PKG       += `pkg-config --libs libalx-ocr`
+LIBS_PKG       += `pkg-config --libs libalx-zbar`
+LIBS_PKG       += `pkg-config --libs libalx-base`
+
+LIBS		= $(LIBS_OPT)
+LIBS           += $(LIBS_PKG)
+
+export	LIBS
+
+################################################################################
+# executables
+
+BIN_NAME	= cv-label
+
+export	BIN_NAME
+
+################################################################################
+# target: dependencies
+#	action
+
+# That's the default target when none is given on the command line
+PHONY := all
+all: bin
+
+
+PHONY += tmp
+tmp:
+	@echo	"	MAKE	$@"
+	$(Q)$(MAKE)	-C $(TMP_DIR)
+	@echo
+
+PHONY += bin
+bin: tmp
+	@echo	"	MAKE	$@"
+	$(Q)$(MAKE)	-C $(BIN_DIR)
+	@echo
+
+PHONY += install
+install: uninstall
+	@echo	"	Install:"
+	@echo	"	MKDIR	$(DESTDIR)/$(INSTALL_BIN_DIR)/"
+	$(Q)mkdir -p		$(DESTDIR)/$(INSTALL_BIN_DIR)/
+	@echo	"	CP	$(BIN_NAME)"
+	$(Q)cp -v		$(BIN_DIR)/$(BIN_NAME)	$(DESTDIR)/$(INSTALL_BIN_DIR)/
+	@echo	"	MKDIR	$(DESTDIR)/$(INSTALL_SHARE_DIR)/label/"
+	$(Q)mkdir -p		$(DESTDIR)/$(INSTALL_SHARE_DIR)/label/
+	@echo	"	CP -r	share/coins/*"
+	$(Q)cp -r -v		./share/coins/*	$(DESTDIR)/$(INSTALL_SHARE_DIR)/label/
+	@echo	"	Done"
+	@echo
+
+PHONY += uninstall
+uninstall:
+	@echo	"	Clean old installations:"
+	@echo	"	RM	bin"
+	$(Q)rm -f		$(DESTDIR)/$(INSTALL_BIN_DIR)/$(BIN_NAME)
+	@echo	"	RM -r	$(DESTDIR)/$(INSTALL_SHARE_DIR)/label/"
+	$(Q)rm -f -r		$(DESTDIR)/$(INSTALL_SHARE_DIR)/label/
+	@echo	"	Done"
+	@echo
+
+PHONY += clean
+clean:
+	@echo	"	RM	*.o *.s *.a $(BIN_NAME)"
+	$(Q)find $(TMP_DIR) -type f -name '*.o' -exec rm '{}' '+'
+	$(Q)find $(TMP_DIR) -type f -name '*.s' -exec rm '{}' '+'
+	$(Q)find $(BIN_DIR) -type f -name '*$(BIN_NAME)' -exec rm '{}' '+'
+	@echo
+
+PHONY += help
+help:
+	@echo  'Cleaning targets:'
+	@echo  '  clean		  - Remove all generated files'
+	@echo  '  distclean	  - Remove all generated files (including libraries)'
+	@echo
+	@echo  'Other generic targets:'
+	@echo  '  all		  - Build all targets marked with [*]'
+	@echo  '* libalx	  - Build the libalx library'
+	@echo  '* tmp		  - Compile all files'
+	@echo  '* bin		  - Build the binary'
+	@echo  '  install	  - Install the program into the filesystem'
+	@echo  '  uninstall	  - Uninstall the program off the filesystem'
+	@echo
+	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
+	@echo
+	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
+	@echo  'For further info see the ./README file'
+
+################################################################################
+# Declare the contents of the .PHONY variable as phony.
+.PHONY: $(PHONY)
+
+
+################################################################################
+######## End of file ###########################################################
+################################################################################
diff --git a/README.txt b/README.txt
new file mode 100644
index 0000000..b523695
--- /dev/null
+++ b/README.txt
@@ -0,0 +1,84 @@
+/******************************************************************************
+ * vision-artificial	Copyright (C) 2018	Alejandro Colomar Andrés      *
+ *									      *
+ * 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, version 2.				      *
+ *									      *
+ * 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, see the file COPYING, or write	      *
+ * to the Free Software Foundation, Inc.				      *
+ ******************************************************************************
+ *	Disclaimer of Warranty.						      *
+ *									      *
+ * THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY	      *
+ * APPLICABLE LAW.							      *
+ *									      *
+ * EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER *
+ * PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER   *
+ * EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED	      *
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.	      *
+ *									      *
+ * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH   *
+ * YOU.									      *
+ *									      *
+ * SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY   *
+ * SERVICING, REPAIR OR CORRECTION.					      *
+ ******************************************************************************/
+
+	If you make a version, please tell me.
+	I would like to see it. Thank you.
+
+site:
+	https://github.com/AlejandroColomar/vision-artificial
+
+
+COMPILE:
+	$ make
+
+INSTALL:
+	# make install
+
+RUN:
+	$ vision-artificial
+			if it doesn't work:
+	$ /usr/local/games/vision-artificial
+
+UNINSTALL:
+	# make uninstall
+
+
+The program creates a folder '.vision-artificial/' at $HOME.  It
+is used by the program to store saved images.  If you remove the program, you
+should delete that folder manually.
+
+
+THE PROGRAM DOES:
+	// FIXME
+
+
+MENU:
+	When you run the program, it starts in a menu that has these branches:
+
+	/*
+	 * + Menu:
+	 *	+ Continue:
+	 *		- Start
+	 *		- Change file name (File: "<file_name>")
+	 *		- ..
+	 *	- Disclaimer of warranty
+	 *	- Terms and conditions
+	 *	- Exit program
+	 */
+
+
+SYSTEM REQUIREMENTS:
+
+	 * ¿?
+
+To be continued...
diff --git a/bin/Makefile b/bin/Makefile
new file mode 100644
index 0000000..3eebdf7
--- /dev/null
+++ b/bin/Makefile
@@ -0,0 +1,39 @@
+#! /usr/bin/make -f
+
+# dependencies
+
+OBJS		=							\
+		$(TMP_DIR)/label.o					\
+		$(TMP_DIR)/main.o					\
+		$(TMP_DIR)/parse.o
+
+ALL	= $(BIN_NAME) size
+
+
+# target: dependencies
+#	action
+
+PHONY := all
+all: $(ALL)
+
+
+$(BIN_NAME): $(OBJS)
+	@echo	"	CXX	$@"
+	$(Q)$(CXX) $(OBJS) -o $@ $(LIBS)
+
+size: $(BIN_NAME)
+	@echo	"	SZ	$(BIN_NAME)"
+	$(Q)$(SZ) $(BIN_NAME)
+
+
+clean:
+	@echo	"	RM	$(ALL)"
+	$(Q)rm -f	$(ALL)
+
+################################################################################
+# Declare the contents of the .PHONY variable as phony.
+.PHONY: $(PHONY)
+
+################################################################################
+######## End of file ###########################################################
+################################################################################
diff --git a/inc/label/label.h b/inc/label/label.h
new file mode 100644
index 0000000..8203b3c
--- /dev/null
+++ b/inc/label/label.h
@@ -0,0 +1,46 @@
+/******************************************************************************
+ *	Copyright (C) 2018	Alejandro Colomar Andrés		      *
+ *	SPDX-License-Identifier:	GPL-2.0-only			      *
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* include guard ********************************************************
+ ******************************************************************************/
+#pragma once	/* label/label.h */
+
+
+/******************************************************************************
+ ******* headers **************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* macros ***************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* enum *****************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* struct / union *******************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* prototypes ***********************************************************
+ ******************************************************************************/
+int	proc_label	(const char *restrict fname);
+
+
+/******************************************************************************
+ ******* inline ***************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* end of file **********************************************************
+ ******************************************************************************/
diff --git a/inc/label/parse.h b/inc/label/parse.h
new file mode 100644
index 0000000..44c687e
--- /dev/null
+++ b/inc/label/parse.h
@@ -0,0 +1,48 @@
+/******************************************************************************
+ *	Copyright (C) 2018	Alejandro Colomar Andrés		      *
+ *	SPDX-License-Identifier:	GPL-2.0-only			      *
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* include guard ********************************************************
+ ******************************************************************************/
+#pragma once	/* coins/parse.h */
+
+
+/******************************************************************************
+ ******* headers **************************************************************
+ ******************************************************************************/
+#include <stdio.h>
+
+
+/******************************************************************************
+ ******* macros ***************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* enum *****************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* struct / union *******************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* prototypes ***********************************************************
+ ******************************************************************************/
+void	parse	(char fname[static restrict FILENAME_MAX],
+		 int argc, char *argv[]);
+
+
+/******************************************************************************
+ ******* inline ***************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* end of file **********************************************************
+ ******************************************************************************/
diff --git a/share/coins/COPYRIGHT.txt b/share/coins/COPYRIGHT.txt
new file mode 100644
index 0000000..64ca5ad
--- /dev/null
+++ b/share/coins/COPYRIGHT.txt
@@ -0,0 +1,8 @@
+
+
+	vision-artificial	Copyright (C) 2018	Alejandro COLOMAR ANDRES
+
+	This program comes with ABSOLUTELY NO WARRANTY.
+	This is free software, and you are welcome to redistribute it
+	under certain conditions; see the file COPYING.txt for details.
+
diff --git a/share/coins/DISCLAIMER.txt b/share/coins/DISCLAIMER.txt
new file mode 100644
index 0000000..291440a
--- /dev/null
+++ b/share/coins/DISCLAIMER.txt
@@ -0,0 +1,16 @@
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+		Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+
+THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OFANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
+
+SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
+SERVICING, REPAIR OR CORRECTION.
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
diff --git a/share/coins/HELP.txt b/share/coins/HELP.txt
new file mode 100644
index 0000000..000f7ef
--- /dev/null
+++ b/share/coins/HELP.txt
@@ -0,0 +1,25 @@
+Usage: $ vision-artificial [OPTION...]
+
+	-f, --file=FILE			set image file
+	-i, --iface=IFACE		set program interface
+
+ Other:
+	-L, --license			display license
+	-h, --help			give this help list
+	-u, --usage			give a short usage message
+	-v, --version			print program version
+
+MANDATORY or [OPTIONAL] arguments to long options are also mandatory or optional
+for any corresponding short options.
+
+
+ Examples:
+	$ vision-artificial
+	$ vision-artificial --version
+	$ vision-artificial --license
+	$ vision-artificial -i 1
+	$ vision-artificial -f <file>
+
+
+Report bugs to: 1903716@gmail.com
+vision-artificial home page: <https://github.com/AlejandroColomar/vision-artificial/>
diff --git a/share/coins/LICENSE.txt b/share/coins/LICENSE.txt
new file mode 100644
index 0000000..ad35970
--- /dev/null
+++ b/share/coins/LICENSE.txt
@@ -0,0 +1,352 @@
+    NOTE! The GPL below is copyrighted by the Free Software
+ Foundation, but the instance of code that it refers to (coins)
+ is copyrighted by me who actually wrote it.
+
+ Also note that the only valid version of the GPL is _this_ particular
+ version of the license (ie v2, not v2.2 or v3.x or whatever), unless
+ explicitly otherwise stated.
+
+			Alejandro Colomar
+
+----------------------------------------
+
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/share/coins/README.txt b/share/coins/README.txt
new file mode 100644
index 0000000..b523695
--- /dev/null
+++ b/share/coins/README.txt
@@ -0,0 +1,84 @@
+/******************************************************************************
+ * vision-artificial	Copyright (C) 2018	Alejandro Colomar Andrés      *
+ *									      *
+ * 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, version 2.				      *
+ *									      *
+ * 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, see the file COPYING, or write	      *
+ * to the Free Software Foundation, Inc.				      *
+ ******************************************************************************
+ *	Disclaimer of Warranty.						      *
+ *									      *
+ * THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY	      *
+ * APPLICABLE LAW.							      *
+ *									      *
+ * EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER *
+ * PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER   *
+ * EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED	      *
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.	      *
+ *									      *
+ * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH   *
+ * YOU.									      *
+ *									      *
+ * SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY   *
+ * SERVICING, REPAIR OR CORRECTION.					      *
+ ******************************************************************************/
+
+	If you make a version, please tell me.
+	I would like to see it. Thank you.
+
+site:
+	https://github.com/AlejandroColomar/vision-artificial
+
+
+COMPILE:
+	$ make
+
+INSTALL:
+	# make install
+
+RUN:
+	$ vision-artificial
+			if it doesn't work:
+	$ /usr/local/games/vision-artificial
+
+UNINSTALL:
+	# make uninstall
+
+
+The program creates a folder '.vision-artificial/' at $HOME.  It
+is used by the program to store saved images.  If you remove the program, you
+should delete that folder manually.
+
+
+THE PROGRAM DOES:
+	// FIXME
+
+
+MENU:
+	When you run the program, it starts in a menu that has these branches:
+
+	/*
+	 * + Menu:
+	 *	+ Continue:
+	 *		- Start
+	 *		- Change file name (File: "<file_name>")
+	 *		- ..
+	 *	- Disclaimer of warranty
+	 *	- Terms and conditions
+	 *	- Exit program
+	 */
+
+
+SYSTEM REQUIREMENTS:
+
+	 * ¿?
+
+To be continued...
diff --git a/share/coins/USAGE.txt b/share/coins/USAGE.txt
new file mode 100644
index 0000000..fcbbfc7
--- /dev/null
+++ b/share/coins/USAGE.txt
@@ -0,0 +1,5 @@
+ Usage:  $ vision-artificial	[--help] [--license] [--usage] [--version]
+				[--file=FILE] [--iface=IFACE]
+
+
+ Type '$ vision-artificial --help' for a full description.
diff --git a/src/label.c b/src/label.c
new file mode 100644
index 0000000..986df4f
--- /dev/null
+++ b/src/label.c
@@ -0,0 +1,455 @@
+/******************************************************************************
+ *	Copyright (C) 2018	Alejandro Colomar Andrés		      *
+ *	SPDX-License-Identifier:	GPL-2.0-only			      *
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* headers **************************************************************
+ ******************************************************************************/
+#include "label/label.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <time.h>
+
+#include <opencv2/imgproc/types_c.h>
+#include <zbar.h>
+
+#include <libalx/base/compiler/size.h>
+#include <libalx/base/errno/error.h>
+#include <libalx/base/stdio/printf/sbprintf.h>
+#include <libalx/base/stdlib/maximum.h>
+#include <libalx/extra/cv/alx.h>
+#include <libalx/extra/cv/core.h>
+#include <libalx/extra/cv/highgui.h>
+#include <libalx/extra/cv/imgproc.h>
+#include <libalx/extra/ocr/ocr.h>
+#include <libalx/extra/zbar/zbar.h>
+
+
+/******************************************************************************
+ ******* macros ***************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* enum / struct / union ************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* static functions (prototypes) ****************************************
+ ******************************************************************************/
+static
+int	init_cv		(img_s **img_1, img_s **img_2, rect_rot_s **rect_rot);
+static
+void	deinit_cv	(img_s *img_1, img_s *img_2, rect_rot_s *rect_rot);
+static
+int	proc_label_steps(const char *restrict fname);
+static
+int	find_label	(const img_s *restrict img,
+			 rect_rot_s *restrict rect_rot);
+static
+int	align_label	(img_s *restrict img,
+			 const rect_rot_s *restrict rect_rot);
+static
+int	find_cerdo	(const img_s *restrict img,
+			 const rect_rot_s *restrict rect_rot);
+static
+int	read_barcode	(const img_s *restrict img,
+			 char bcode[static restrict BUFSIZ]);
+static
+int	read_price	(const img_s *restrict img,
+			 const rect_rot_s *restrict rect_rot,
+			 char price[static restrict BUFSIZ]);
+static
+int	chk_bcode_prod	(const char bcode[static restrict BUFSIZ]);
+static
+int	chk_bcode_price	(const char bcode[static restrict BUFSIZ],
+			 const char price[static restrict BUFSIZ]);
+static
+void	report		(const char bcode[static restrict BUFSIZ],
+			 const char price[static restrict BUFSIZ]);
+
+
+/******************************************************************************
+ ******* global functions *****************************************************
+ ******************************************************************************/
+int	proc_label	(const char *restrict fname)
+{
+	clock_t	time_0;
+	clock_t	time_1;
+	double	time_tot;
+
+	time_0 = clock();
+	if (proc_label_steps(fname))
+		return	-1;
+	time_1 = clock();
+
+	time_tot = ((double) time_1 - time_0) / CLOCKS_PER_SEC;
+	printf("Total time:	%5.3lf s;\n", time_tot);
+
+	return	0;
+}
+
+
+/******************************************************************************
+ ******* static functions (definitions) ***************************************
+ ******************************************************************************/
+static
+int	init_cv		(img_s **img_1, img_s **img_2, rect_rot_s **rect_rot)
+{
+
+	if (alx_cv_alloc_img(img_1))
+		return	-1;
+	if (alx_cv_init_img(*img_1, 1, 1))
+		goto out_free_1;
+	if (alx_cv_alloc_img(img_2))
+		goto out_deinit_1;
+	if (alx_cv_init_img(*img_2, 1, 1))
+		goto out_free_2;
+	if (alx_cv_alloc_rect_rot(rect_rot))
+		goto out_deinit_2;
+	return	0;
+
+out_deinit_2:
+	alx_cv_deinit_img(img_2);
+out_free_2:
+	alx_cv_free_img(img_2);
+out_deinit_1:
+	alx_cv_deinit_img(img_1);
+out_free_1:
+	alx_cv_free_img(img_1);
+	return	-1;
+}
+
+static
+void	deinit_cv	(img_s *img_1, img_s *img_2, rect_rot_s *rect_rot)
+{
+
+	alx_cv_free_rect_rot(rect_rot);
+	alx_cv_deinit_img(img_2);
+	alx_cv_free_img(img_2);
+	alx_cv_deinit_img(img_1);
+	alx_cv_free_img(img_1);
+}
+
+static
+int	proc_label_steps(const char *restrict fname)
+{
+	img_s		*img;
+	img_s		*img_tmp;
+	rect_rot_s	*rect_rot;
+	char		bcode[BUFSIZ];
+	char		price[BUFSIZ];
+	int		status;
+
+	status	= -1;
+	if (init_cv(&img, &img_tmp, &rect_rot))
+		return	-1;
+	if (alx_cv_imread(img, fname))
+		goto err;
+
+	if (find_label(/*const*/img, rect_rot)) {
+		fprintf(stderr, "Label not found");
+		goto err;
+	}
+	if (alx_cv_component(img, ALX_CV_CMP_GREEN)) {
+		fprintf(stderr, "Couldn't extract green component");
+		goto err;
+	}
+	alx_cv_clone(img_tmp, img);
+	if (align_label(img_tmp, /*const*/rect_rot)) {
+		fprintf(stderr, "Couldn't align label");
+		goto err;
+	}
+	if (find_cerdo(/*const*/img_tmp, /*const*/rect_rot)) {
+		fprintf(stderr, "\"Cerdo\" not found");
+		goto err;
+	}
+	if (read_barcode(/*const*/img, bcode)) {
+		fprintf(stderr, "Barcode not found");
+		goto err;
+	}
+	if (read_price(/*const*/img_tmp, /*const*/rect_rot, price)) {
+		fprintf(stderr, "Price not found");
+		goto err;
+	}
+	if (chk_bcode_prod(/*const*/bcode)) {
+		fprintf(stderr, "Product doesn't match in barcode");
+		goto err;
+	}
+	if (chk_bcode_price(/*const*/bcode, price)) {
+		fprintf(stderr, "Price doesn't match in barcode");
+		goto err;
+	}
+
+	report(bcode, price);
+	status	= 0;
+
+err:
+	deinit_cv(img, img_tmp, rect_rot);
+	return	status;
+}
+
+static
+int	find_label	(const img_s *restrict img,
+			 rect_rot_s *restrict rect_rot)
+{
+	img_s		*img_tmp;
+	conts_s		*conts;
+	const cont_s	*cont;
+	int		status;
+
+	status	= -1;
+
+	if (alx_cv_alloc_img(&img_tmp))
+		return	-1;
+	if (alx_cv_init_img(img_tmp, 1, 1))
+		goto out_free_tmp;
+	if (alx_cv_alloc_conts(conts))
+		goto out_deinit_tmp;
+	alx_cv_init_conts(conts);
+
+	alx_cv_clone(img_tmp, img);
+	if (alx_cv_component(img_tmp, ALX_CV_CMP_BLUE))
+		goto err;
+	if (alx_cv_smooth(img_tmp, ALX_CV_SMOOTH_MEDIAN, 7))
+		goto err;
+	alx_cv_invert(img_tmp);
+	if (alx_cv_smooth(img_tmp, ALX_CV_SMOOTH_MEAN, 21))
+		goto err;
+	if (alx_cv_threshold(img_tmp, CV_THRESH_BINARY_INV, 2))
+		goto err;
+	if (alx_cv_dilate_erode(img_tmp, 100))
+		goto err;
+	if (alx_cv_contours(img_tmp, conts))
+		goto err;
+	if (alx_cv_contours_size(conts) != 1)
+		goto err;
+	if (alx_cv_contours_contour(&cont, conts, 0))
+		goto err;
+	alx_cv_min_area_rect(rect_rot, cont);
+
+	status	= 0;
+err:
+	alx_cv_deinit_conts(conts);
+	alx_cv_free_conts(conts);
+out_deinit_tmp:
+	alx_cv_deinit_img(img_tmp);
+out_free_tmp:
+	alx_cv_free_img(img_tmp);
+	return	status;
+}
+
+static
+int	align_label	(img_s *restrict img,
+			 const rect_rot_s *restrict rect_rot)
+{
+
+	if (alx_cv_rotate_2rect(img, rect_rot))
+		return	-1;
+	return	0;
+}
+
+static
+int	find_cerdo	(const img_s *restrict img,
+			 const rect_rot_s *restrict rect_rot)
+{
+	img_s		*img_tmp;
+	rect_s		*rect;
+	ptrdiff_t	rectrot_ctr_x, rectrot_ctr_y, rectrot_w, rectrot_h;
+	ptrdiff_t	lbl_x, lbl_y, lbl_w, lbl_h;
+	void		*imgdata;
+	ptrdiff_t	imgdata_w, imgdata_h, B_per_pix, B_per_line;
+	char		text[BUFSIZ];
+	int		status;
+
+	status	= -1;
+
+	if (alx_cv_alloc_img(&img_tmp))
+		return	-1;
+	if (alx_cv_init_img(img_tmp, 1, 1))
+		goto out_free_tmp;
+	if (alx_cv_alloc_rect(&rect))
+		goto out_deinit_tmp;
+
+	alx_cv_clone(img_tmp, img);
+	alx_cv_extract_rect_rot(rect_rot, &rectrot_ctr_x, &rectrot_ctr_y,
+					&rectrot_w, &rectrot_h);
+	lbl_x	= rectrot_ctr_x - (1.05 * rectrot_w / 2);
+	lbl_y	= rectrot_ctr_y - (1.47 * rectrot_h / 2);
+	lbl_w	= rectrot_w / 2;
+	lbl_h	= rectrot_h * 0.20;
+	if (lbl_x < 0)
+		lbl_x = 0;
+	if (lbl_y < 0)
+		lbl_y = 0;
+	if (alx_cv_init_rect(rect, lbl_x, lbl_y, lbl_w, lbl_h))
+		goto err;
+	alx_cv_roi_set(img_tmp, rect);
+	if (alx_cv_threshold(img_tmp, CV_THRESH_BINARY, ALX_CV_THR_OTSU))
+		goto err;
+	if (alx_cv_erode(img_tmp, 1))
+		goto err;
+	alx_cv_extract_imgdata(img_tmp, &imgdata, NULL, NULL,
+					&imgdata_w, &imgdata_h,
+					&B_per_pix, &B_per_line);
+	if (alx_ocr_read(ARRAY_SIZE(text), text, imgdata, imgdata_w, imgdata_h,
+					B_per_pix, B_per_line,
+					ALX_OCR_LANG_SPA, ALX_OCR_CONF_NONE))
+		goto err;
+
+	if (strncmp(text, "Cerdo", strlen("Cerdo")))
+		status	= 1;
+	else
+		status	= 0;
+err:
+	alx_cv_free_rect(rect);
+out_deinit_tmp:
+	alx_cv_deinit_img(img_tmp);
+out_free_tmp:
+	alx_cv_free_img(img_tmp);
+	return	status;
+}
+
+static
+int	read_barcode	(const img_s *restrict img,
+			 char bcode[static restrict BUFSIZ])
+{
+	img_s		*img_tmp;
+	void		*imgdata;
+	ptrdiff_t	rows, cols;
+	int		status;
+
+	status	= -1;
+
+	if (alx_cv_alloc_img(&img_tmp))
+		return	-1;
+	if (alx_cv_init_img(img_tmp, 1, 1))
+		goto out_free_tmp;
+
+	alx_cv_clone(img_tmp, img);
+	alx_cv_extract_imgdata(img_tmp, &imgdata, &rows, &cols, NULL, NULL,
+								NULL, NULL);
+	if (alx_zbar_read(BUFSIZ, bcode, NULL, imgdata, rows, cols, ZBAR_EAN13))
+		goto err;
+
+	status	= 0;
+err:
+	alx_cv_deinit_img(img_tmp);
+out_free_tmp:
+	alx_cv_free_img(img_tmp);
+	return	status;
+}
+
+static
+int	read_price	(const img_s *restrict img,
+			 const rect_rot_s *restrict rect_rot,
+			 char price[static restrict BUFSIZ])
+{
+	img_s		*img_tmp;
+	rect_s		*rect;
+	ptrdiff_t	rectrot_ctr_x, rectrot_ctr_y, rectrot_w, rectrot_h;
+	ptrdiff_t	prc_x, prc_y, prc_w, prc_h;
+	void		*imgdata;
+	ptrdiff_t	imgdata_w, imgdata_h, B_per_pix, B_per_line;
+	int		status;
+
+	status	= -1;
+
+	if (alx_cv_alloc_img(&img_tmp))
+		return	-1;
+	if (alx_cv_init_img(img_tmp, 1, 1))
+		goto out_free_tmp;
+	if (alx_cv_alloc_rect(&rect))
+		goto out_deinit_tmp;
+
+	alx_cv_clone(img_tmp, img);
+	alx_cv_extract_rect_rot(rect_rot, &rectrot_ctr_x, &rectrot_ctr_y,
+					&rectrot_w, &rectrot_h);
+	prc_x	= rectrot_ctr_x - (0.33 * rectrot_w / 2);
+	prc_y	= rectrot_ctr_y - (0.64 * rectrot_h / 2);
+	prc_w	= rectrot_w * 0.225;
+	prc_h	= rectrot_h * 0.15;
+	if (prc_x < 0)
+		prc_x = 0;
+	if (prc_y < 0)
+		prc_y = 0;
+	if (alx_cv_init_rect(rect, prc_x, prc_y, prc_w, prc_h))
+		goto err;
+	alx_cv_roi_set(img_tmp, rect);
+	if (alx_cv_smooth(img_tmp, ALX_CV_SMOOTH_MEAN, 3))
+		goto err;
+	if (alx_cv_threshold(img_tmp, CV_THRESH_BINARY, ALX_CV_THR_OTSU))
+		goto err;
+	if (alx_cv_dilate_erode(img_tmp, 1))
+		goto err;
+	if (alx_cv_threshold(img_tmp, CV_THRESH_BINARY, 1))
+		goto err;
+	alx_cv_extract_imgdata(img_tmp, &imgdata, NULL, NULL,
+					&imgdata_w, &imgdata_h,
+					&B_per_pix, &B_per_line);
+	if (alx_ocr_read(BUFSIZ, price, imgdata, imgdata_w, imgdata_h,
+					B_per_pix, B_per_line,
+					ALX_OCR_LANG_DIGITS,
+					ALX_OCR_CONF_PRICE_EUR))
+		goto err;
+
+	status	= 0;
+err:
+	alx_cv_free_rect(rect);
+out_deinit_tmp:
+	alx_cv_deinit_img(img_tmp);
+out_free_tmp:
+	alx_cv_free_img(img_tmp);
+	return	status;
+}
+
+static
+int	chk_bcode_prod	(const char bcode[static restrict BUFSIZ])
+{
+
+	if (strncmp(bcode, "2301703", strlen("2301703")))
+		return	1;
+	return	0;
+}
+
+static
+int	chk_bcode_price	(const char bcode[static restrict BUFSIZ],
+			 const char price[static restrict BUFSIZ])
+{
+	char	bcode_price[BUFSIZ];
+
+	if (bcode[8] != '0') {
+		if (alx_sbprintf(bcode_price, NULL, "%c%c.%c%c",
+							bcode[8], bcode[9],
+							bcode[10], bcode[11]))
+			return	-1;
+	} else {
+		if (alx_sbprintf(bcode_price, NULL, "%c.%c%c",
+							bcode[9],
+							bcode[10], bcode[11]))
+			return	-1;
+	}
+
+	if (strncmp(price, bcode_price, strlen(bcode_price)))
+		return	1;
+	return	0;
+}
+
+static
+void	report		(const char bcode[static restrict BUFSIZ],
+			 const char price[static restrict BUFSIZ])
+{
+
+	printf("Code:	%s\n", bcode);
+	printf("Price:	%5s EUR\n", price);
+}
+
+
+/******************************************************************************
+ ******* end of file **********************************************************
+ ******************************************************************************/
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..2a91a69
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,52 @@
+/******************************************************************************
+ *	Copyright (C) 2018	Alejandro Colomar Andrés		      *
+ *	SPDX-License-Identifier:	GPL-2.0-only			      *
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* headers **************************************************************
+ ******************************************************************************/
+#include <stdio.h>
+
+#include "label/label.h"
+#include "label/parse.h"
+
+
+/******************************************************************************
+ ******* enum *****************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* struct / union *******************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* static functions (prototypes) ****************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* main *****************************************************************
+ ******************************************************************************/
+int	main	(int argc, char *argv[])
+{
+	char	fname[FILENAME_MAX];
+
+	parse(fname, argc, argv);
+	proc_label(fname);
+
+	return	0;
+}
+
+
+/******************************************************************************
+ ******* static functions (definitions) ***************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* end of file **********************************************************
+ ******************************************************************************/
diff --git a/src/parse.c b/src/parse.c
new file mode 100644
index 0000000..4f69a06
--- /dev/null
+++ b/src/parse.c
@@ -0,0 +1,141 @@
+/******************************************************************************
+ *	Copyright (C) 2018	Alejandro Colomar Andrés		      *
+ *	SPDX-License-Identifier:	GPL-2.0-only			      *
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* headers **************************************************************
+ ******************************************************************************/
+#include "label/parse.h"
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <getopt.h>
+#include <sys/stat.h>
+
+#include <libalx/base/errno/error.h>
+#include <libalx/base/stdio/printf/snprintfs.h>
+
+
+/******************************************************************************
+ ******* macros ***************************************************************
+ ******************************************************************************/
+#define PROG_YEAR		"2018"
+
+#define OPT_LIST		"hLuv""f:"
+
+#define SHARE_DIR		"" INSTALL_SHARE_DIR "/label/"
+#define SHARE_COPYRIGHT_FILE	"" SHARE_DIR "/COPYRIGHT.txt"
+#define SHARE_HELP_FILE		"" SHARE_DIR "/HELP.txt"
+#define SHARE_LICENSE_FILE	"" SHARE_DIR "/LICENSE.txt"
+#define SHARE_USAGE_FILE	"" SHARE_DIR "/USAGE.txt"
+
+
+/******************************************************************************
+ ******* enum *****************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* struct / union *******************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* static functions (prototypes) ****************************************
+ ******************************************************************************/
+static
+void	parse_file	(char fname[static restrict FILENAME_MAX], char *arg);
+static
+void	print_version	(void);
+
+
+/******************************************************************************
+ ******* global functions *****************************************************
+ ******************************************************************************/
+void	parse	(char fname[static restrict FILENAME_MAX],
+		 int argc, char *argv[])
+{
+	static bool	f = 0;
+	int	opt		= 0;
+	int	opt_index	= 0;
+
+	const	struct option	long_options[]	= {
+		/* Standard */
+		{"help",		no_argument,		0,	'h'},
+		{"license",		no_argument,		0,	'L'},
+		{"usage",		no_argument,		0,	'u'},
+		{"version",		no_argument,		0,	'v'},
+		/* Non-standard */
+		{"file",		required_argument,	0,	'f'},
+		/* Null */
+		{0,			0,			0,	0}
+	};
+
+	while ((opt = getopt_long(argc, argv, OPT_LIST, long_options,
+						&opt_index)) != -1) {
+		switch (opt) {
+		/* Standard */
+		case 'h':
+			system("cat "SHARE_HELP_FILE"");
+			exit(EXIT_SUCCESS);
+		case 'L':
+			system("cat "SHARE_LICENSE_FILE"");
+			exit(EXIT_SUCCESS);
+		case 'u':
+			system("cat "SHARE_USAGE_FILE"");
+			exit(EXIT_SUCCESS);
+		case 'v':
+			print_version();
+			exit(EXIT_SUCCESS);
+		/* Non-standard */
+		case 'f':
+			parse_file(fname, optarg);
+			f	= true;
+			break;
+
+		case '?':
+			/* getopt_long already printed an error message. */
+		default:
+			goto usage;
+		}
+	}
+
+	if (!f)
+		goto usage;
+	return;
+usage:
+	system("cat "SHARE_USAGE_FILE"");
+	exit(EXIT_FAILURE);
+}
+
+
+/******************************************************************************
+ ******* static functions (definitions) ***************************************
+ ******************************************************************************/
+static
+void	parse_file	(char fname[static restrict FILENAME_MAX], char *arg)
+{
+	struct stat	sb;
+
+	if (stat(arg, &sb)  ||  !S_ISREG(sb.st_mode))
+		alx_error(EXIT_FAILURE, arg);
+	if (alx_snprintfs(fname, NULL, FILENAME_MAX, "%s", arg))
+		alx_error(EXIT_FAILURE, arg);
+	return;
+}
+
+static
+void	print_version	(void)
+{
+	printf("%s %s\n\n", program_invocation_short_name, PROG_VERSION);
+}
+
+
+/******************************************************************************
+ ******* end of file **********************************************************
+ ******************************************************************************/
diff --git a/tmp/Makefile b/tmp/Makefile
new file mode 100644
index 0000000..ce24684
--- /dev/null
+++ b/tmp/Makefile
@@ -0,0 +1,78 @@
+#! /usr/bin/make -f
+
+################################################################################
+# Copyright (C) 2019	Alejandro Colomar Andrés
+# SPDX-License-Identifier:	GPL-2.0-only
+################################################################################
+# *AUTHOR*
+# FULL NAME	"Alejandro Colomar Andrés"
+# EMAIL		"1903716@gmail.com"
+################################################################################
+
+################################################################################
+# dependencies
+
+OBJ		=							\
+		label.o							\
+		main.o							\
+		parse.o
+
+LABEL_INC	=							\
+		$(INC_DIR)/label/label.h
+LABEL_SRC	=							\
+		$(SRC_DIR)/label.c
+
+MAIN_INC	=							\
+		$(INC_DIR)/label/label.h				\
+		$(INC_DIR)/label/parse.h
+MAIN_SRC	=							\
+		$(SRC_DIR)/main.c
+
+PARSE_INC	=							\
+		$(INC_DIR)/label/parse.h
+PARSE_SRC	=							\
+		$(SRC_DIR)/parse.c
+
+################################################################################
+# target: dependencies
+#	action
+
+PHONY := all
+all: $(OBJ)
+
+
+label.s: $(LABEL_SRC) $(LABEL_INC)
+	@echo	"	CC	label/tmp/$@"
+	$(Q)$(CC) $(CFLAGS) -I $(INC_DIR) -S $< -o $@
+label.o: label.s
+	@echo	"	AS	label/tmp/$@"
+	$(Q)$(AS) $< -o $@
+
+main.s: $(MAIN_SRC) $(MAIN_INC)
+	@echo	"	CC	label/tmp/$@"
+	$(Q)$(CC) $(CFLAGS) -I $(INC_DIR) -S $< -o $@
+main.o: main.s
+	@echo	"	AS	label/tmp/$@"
+	$(Q)$(AS) $< -o $@
+
+parse.s: $(PARSE_SRC) $(PARSE_INC)
+	@echo	"	CC	label/tmp/$@"
+	$(Q)$(CC) $(CFLAGS) -I $(INC_DIR) -S $< -o $@
+parse.o: parse.s
+	@echo	"	AS	label/tmp/$@"
+	$(Q)$(AS) $< -o $@
+
+
+PHONY += clean
+clean:
+	@echo	"	RM	*.o *.s"
+	$(Q)rm -f	*.o *.s
+
+################################################################################
+# Declare the contents of the .PHONY variable as phony.
+.PHONY: $(PHONY)
+
+
+################################################################################
+######## End of file ###########################################################
+################################################################################