Skip to content

E
elphel-apps-autoexposure
Commit 99b601c4 authored by Andrey Filippov's avatar Andrey Filippov
Browse files
Options

initial commit - cloned from NC353

parents
Hide whitespace changes
Inline Side-by-side
Showing with 2911 additions and 0 deletions
.gitignore 0 → 100644
View file @ 99b601c4
html/*
attic/*
/.project
/.cproject
/.pydevproject
/.externalToolBuilders
/.settings
.directory
generated*
sysroots
bitbake-logs
/temp/
LICENSE 0 → 100644
View file @ 99b601c4
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. 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
them 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 prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. 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.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you". "Licensees" and
"recipients" may be individuals or organizations.
To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work based
on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
1. Source Code.
The "source code" for a work means the preferred form of the work
for making modifications to it. "Object code" means any non-source
form of a work.
A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular programming language, one that
is widely used among developers working in that language.
The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A
"Major Component", in this context, means a major essential component
(kernel, window system, and so on) of the specific operating system
(if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.
The "Corresponding Source" for a work in object code form means all
the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities. However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work. For example, Corresponding Source
includes interface definition files associated with source files for
the work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.
The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.
The Corresponding Source for a work in source code form is that
same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
in force. You may convey covered works to others for the sole purpose
of having them make modifications exclusively for you, or provide you
with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
not control copyright. Those thus making or running the covered works
for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under
the conditions stated below. Sublicensing is not allowed; section 10
makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.
4. Conveying Verbatim Copies.
You may convey 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;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any conditions added under section
7. This requirement modifies the requirement in section 4 to
"keep intact all notices".
c) You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This
License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License gives no
permission to license the work in any other way, but it does not
invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit. Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:
a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer support for that product
model, to give anyone who possesses the object code either (1) a
copy of the Corresponding Source for all the software in the
product that is covered by this License, on a durable physical
medium customarily used for software interchange, for a price no
more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the
Corresponding Source from a network server at no charge.
c) Convey individual copies of the object code with a copy of the
written offer to provide the Corresponding Source. This
alternative is allowed only occasionally and noncommercially, and
only if you received the object code with such an offer, in accord
with subsection 6b.
d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no
further charge. You need not require recipients to copy the
Corresponding Source along with the object code. If the place to
copy the object code is a network server, the Corresponding Source
may be on a different server (operated by you or a third party)
that supports equivalent copying facilities, provided you maintain
clear directions next to the object code saying where to find the
Corresponding Source. Regardless of what server hosts the
Corresponding Source, you remain obligated to ensure that it is
available for as long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided
you inform other peers where the object code and Corresponding
Source of the work are being offered to the general public at no
charge under subsection 6d.
A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.
A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling. In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage. For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product. A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.
"Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source. The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.
If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information. But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).
The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed. Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
d) Limiting the use for publicity purposes of names of licensors or
authors of the material; or
e) Declining to grant rights under trademark law for use of some
trade names, trademarks, or service marks; or
f) Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions of
it) with contractual assumptions of liability to the recipient, for
any liability that these contractual assumptions directly impose on
those licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term. If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If 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 convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU 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 that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. 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.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
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.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
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
state 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 3 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, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
{project} Copyright (C) {year} {fullname}
This program 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, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU 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 Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
README.md 0 → 100644
View file @ 99b601c4
# elphel-apps-autoexposure
run_bitbake.sh 0 → 100755
View file @ 99b601c4
#!/bin/bash
args="$@"
while (( "$#" )); do
shift
done
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
echo "Launching bitbake $args"
cd $DIR/../../poky
. ./oe-init-build-env
bitbake $args | sed -u 's@| @@'
exit 0
src/Makefile 0 → 100644
View file @ 99b601c4
AXIS_USABLE_LIBS = UCLIBC GLIBC
AXIS_AUTO_DEPEND = yes
include $(AXIS_TOP_DIR)/tools/build/Rules.axis
#include ".depend"
INSTDIR = $(prefix)/usr/local/sbin/
CONFDIR = $(prefix)/etc/
INSTMODE = 0755
INSTOTHER = 0644
INSTOWNER = root
INSTGROUP = root
INCDIR = $(prefix)/include
PROGS = autoexposure temperature
SRCS = autoexposure.c globalsinit.c aexp_utils.c aexp_corr.c white_balance.c hdr_control.c temperature.c
OBJS = autoexposure.o globalsinit.o aexp_utils.o aexp_corr.o white_balance.o hdr_control.o temperature.o
CFLAGS += -Wall -I$(INCDIR) -I$(AXIS_KERNEL_DIR)/include
#CFLAGS += -Wall -I$(INCDIR) -I$(AXIS_KERNEL_DIR)/include -save-temps -dA -dP
all: $(PROGS)
autoexposure: autoexposure.o globalsinit.o aexp_utils.o aexp_corr.o white_balance.o hdr_control.o
$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
cris-strip -s $@
temperature: temperature.o
$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
cris-strip -s $@
install: $(PROGS)
$(INSTALL) -d $(INSTDIR)
$(INSTALL) -m $(INSTMODE) -o $(INSTOWNER) -g $(INSTGROUP) $(PROGS) $(INSTDIR)
clean:
rm -rf $(PROGS) *.o core
configsubs:
src/aexp_corr.c 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : aexp_corr.c
*! DESCRIPTION: Autoexposure part of the autoexposure/white balance/hdr daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: aexp_corr.c,v $
*! Revision 1.9 2010/12/16 16:52:15 elphel
*! working on HDR autoexposure
*!
*! Revision 1.8 2010/12/15 16:46:44 elphel
*! autoexposure correction: hdr synchronization
*!
*! Revision 1.7 2009/03/14 05:49:41 elphel
*! Fixed autoexposure getting stuck at minimal (one scan line)
*!
*! Revision 1.6 2008/12/14 07:32:54 elphel
*! Monitoring image width (VIRT_WIDTH) and making autoexposure to use absolute time units (usec) instead of native lines when the width changes
*!
*! Revision 1.5 2008/12/10 02:10:48 elphel
*! Added no-correction zone,
*! so integrated error less than half threshold will not cause any correction, from 0.5 to 1.5 threshold - correction will be scaled, above 1.5 - full correction applied.
*! In the case correction is scaled, only portion of integrated error is removed after correction.
*!
*! Revision 1.4 2008/12/04 02:24:08 elphel
*! Added maximal exposure time conversion from usec to lines
*!
*! Revision 1.3 2008/12/02 00:28:13 elphel
*! multiple bugfixes, making white balance to work and work with camvc
*!
*! Revision 1.2 2008/12/01 02:32:48 elphel
*! Updated white balance to use new gains
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#include "autoexposure.h"
void initAexpCorr(void) {
GLOBALPARS(G_NEXT_AE_FRAME)=0; ///NOTE - autoexposure was stuck for a hours when I tried resetting frame number...
}
/**
* @brief Single autoexposure correction step
* autoexposure parameters are used for the target frame, not for the currenly processed
* @param color color number to process - normally COLOR_Y_NUMBER
* @param frame "current" frame, histograms are ready for frame-1
* @param target_frame frame, to which new exposure should be applied (that frame picture will change brightness)
* caller should take care of not bumping into HDR frame
* @return <0 - error, 0 - no correction was made, 1 - correction to [P_VEXPOS] was made
*/
///P_AUTOEXP_OVEREXP_MAX - temporary
/// TODO: if there were no new histograms - just skip to the next frame
/// TODO: Add errors until they are above threshold (simplified logariphm)?
/// TODO: Add non-linear function to expand near-saturation area (and then experiment with such a function)
/// TODO: Don't correct colors when large exposure changes were made
/// TODO: fix exposure when the green is not the highest. Or is it a problem with white balance, not the AE? AE - when gain as above ~0x430/0x400
/// TODO: Maybe switch autoexposure to "color mode" if green is not highest?
// return gammaReverse (perc_frac);
int aexpCorr(int color, int frame, int target_frame) {
// int target_frame=frame+EXPOS_AHEAD;
int rslt;
// unsigned long write_data[6];
unsigned long write_data[4];
int frac; //,frac_recover;
int level,level_gamma; //,num_pix;
int perc;
int old_vexpos;
int old_expos; /// old_expos is used when image width is modified
int new_vexpos;
float fvexpos;
int error_thresh= framePars[target_frame & PARS_FRAMES_MASK].pars[P_AE_THRESH];/// Threshold for integrated error - when errors are smaller - correction is scaled proportionally
int max_vexpos;
int dim;
int diff;
// int adiff,large_diff;
int target_frame8=target_frame & PARS_FRAMES_MASK;
int ae_period_change=framePars[target_frame8].pars[P_AE_PERIOD] & 0xff; /// lower byte
int ae_period_nochange=(framePars[target_frame8].pars[P_AE_PERIOD] >> 8 ) & 0xff; /// next byte
int ae_dont_sync=(framePars[target_frame8].pars[P_AE_PERIOD] & 0x10000); /// don't try to synchronize to availble histograms
int i;
int aerr=0; // just to keep compiler happy
int * ae_err= (int *) &(GLOBALPARS(G_AE_INTEGERR)); /// so it will be signed
if (!ae_period_change) ae_period_change=DEFAULT_AE_PERIOD_CHANGE;
if (!ae_period_nochange) ae_period_nochange=DEFAULT_AE_PERIOD_NOCHANGE;
// unsigned long overexp_scale;
if (!framePars[target_frame & PARS_FRAMES_MASK].pars[P_AUTOEXP_ON]) {
GLOBALPARS(G_NEXT_AE_FRAME)=frame+ae_period_change;
return 0; /// autoexposure is turned off
}
if (GLOBALPARS(G_NEXT_AE_FRAME)>frame) return 0; /// too early to bother
MDF3(fprintf(stderr,"*ae_err=%d\n",*ae_err)); ///======= 0 here
frac=framePars[target_frame & PARS_FRAMES_MASK].pars[P_AEXP_FRACPIX];
// level=framePars[target_frame & PARS_FRAMES_MASK].pars[P_AEXP_LEVEL];
/// get (approximate if not updated) percentile for dim (1 scanline exposure) image -to use as a zero point exposure
dim=(GLOBALPARS((color>1)?G_HIST_DIM_23:G_HIST_DIM_01) >> ((color & 1)? 16 : 0)) & 0xffff;
/// measure
perc=getPercentile(frame-1,color, frac, 1 << color); ///sets global hist_index, gamma_index
// MDF2(fprintf(stderr,"got histogram for frame: 0x%lx, NOW: 0x%lx\n",histogram_cache[hist_index].frame, GLOBALPARS(G_THIS_FRAME)));
if (histogram_cache[hist_index].frame < (frame-1)) { /// histogram is too old - try again
GLOBALPARS(G_NEXT_AE_FRAME)=frame+1;
if (ae_dont_sync) return 0; /// will request histogram for this frame
/// repeat up to 8 times trying to get a fresh histogram
for (i=0; i<8; i++) {
frame++;
MDF3(fprintf(stderr,"Skipping frame trying to synchronize, frame will be 0x%x\n",frame));
lseek(fd_fparmsall, frame +LSEEK_FRAME_WAIT_ABS, SEEK_END);
this_frame=frame;
perc=getPercentile(frame-1,color, frac, 1 << color); ///sets global hist_index, gamma_index
if (histogram_cache[hist_index].frame == (frame-1)) break;
}
if (histogram_cache[hist_index].frame < (frame-1)) { /// histogram is too old - try again
GLOBALPARS(G_NEXT_AE_FRAME)=frame+1;
return 0; /// will request histogram for this frame
}
}
level_gamma=framePars[target_frame & PARS_FRAMES_MASK].pars[P_AEXP_LEVEL];
/// calculate sensor level from gamma_level using gamma table whisth hash32 saved at hist_index
level=gammaReverse (level_gamma);
MDF3(fprintf(stderr,"->>> frame=0x%x, target_frame=0x%x,dim=0x%04x, frac=0x%04x, level=0x%x,level_gamma=0x%x, perc=0x%04x\n",frame,target_frame,dim,frac,level,level_gamma,perc));
if (perc <0) {
GLOBALPARS(G_NEXT_AE_FRAME)=frame+ae_period_change;
return -1; ///getPercentile() failed
}
///
/// overexposure recovery
///
// if (perc > ((level+0xffff)>>1)) {
if ((perc > ((level_gamma+0x1ffff)>>2))&& (perc>0xf000) ) {
aex_recover_cntr++; /// global counter
///NOTE: Maybe just dividing exposure by 2 /counter is enough?
MDF1(fprintf(stderr,"--- Triggered overexposure recovery:perc=0x%x, level_gamma=0x%x,aex_recover_cntr=0x%x\n",perc,level_gamma,aex_recover_cntr));
} else { /// no overexposition
aex_recover_cntr=0;
}
old_vexpos= histogram_cache[hist_index].vexpos;
old_expos= histogram_cache[hist_index].expos;
if (old_vexpos==1) {
fvexpos=old_vexpos;
new_vexpos= (fvexpos*level)/perc;
} else {
fvexpos=(old_vexpos-1);
if (perc < (dim>>1)) { /// wrong/obsolete dim level - ignore it to avoid negatives)
new_vexpos= (fvexpos*level)/perc;
} else {
new_vexpos= (fvexpos*(level-dim))/(perc-dim);
}
if (aex_recover_cntr > 3) { /// *** more aggressive
MDF1(fprintf(stderr,">>>> Reducing new_vexpos twice\n"));
new_vexpos=(new_vexpos>>1)+1;
}
}
MDF3(fprintf(stderr,"old_vexpos=0x%x, new_vexpos=0x%x,\n",old_vexpos,new_vexpos));
/// Add some protection from autoexposure going crazy
max_vexpos= framePars[target_frame & PARS_FRAMES_MASK].pars[P_AUTOEXP_EXP_MAX]; /// for now treat as number of lines TODO: change to usec?
//P_VIRT_WIDTH, P_CLK_SENSOR
MDF3(fprintf(stderr,"max_vexpos=0x%x, [P_CLK_SENSOR]=0x%lx, [P_VIRT_WIDTH]=0x%lx\n", max_vexpos,framePars[target_frame & PARS_FRAMES_MASK].pars[P_CLK_SENSOR],framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH]));
max_vexpos=(((long long) max_vexpos) * framePars[target_frame & PARS_FRAMES_MASK].pars[P_CLK_SENSOR])/
framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH]/1000000;
if (!max_vexpos) max_vexpos=0x10000; /// temporary limit
if (new_vexpos < 1) new_vexpos=1;
else {
if (new_vexpos > max_vexpos) new_vexpos=max_vexpos;
if (new_vexpos > (old_vexpos*4)) new_vexpos=(old_vexpos*4);
}
diff=poorLog(new_vexpos) - poorLog(old_vexpos);
*ae_err+=diff;
// adiff=abs(diff);
MDF3(fprintf(stderr,"old_vexpos=0x%x, new_vexpos=0x%x, poorLog(new_vexpos)=0x%x, poorLog(old_vexpos)=0x%x, diff=%d, *ae_err=%d\n", old_vexpos, new_vexpos, poorLog(new_vexpos), poorLog(old_vexpos), diff, *ae_err));
error_thresh=framePars[target_frame & PARS_FRAMES_MASK].pars[P_AE_THRESH];/// Threshold for integrated error - when errors are smaller - correction is scaled proportionally
if (error_thresh>0) {
// aerr=abs (ae_err[0]);
// aerr=abs(*ae_err) - (error_thresh>>2); /// TRYING: <1/4 of error_thresh - no correction at all, (0.25..1.25)*error_thresh - scale
aerr=abs(*ae_err) - (error_thresh >> 1); /// TRYING: <1/4 of error_thresh - no correction at all, (0.25..1.25)*error_thresh - scale
if (aerr>0) {
if (aerr > error_thresh) aerr=error_thresh;
new_vexpos=(old_vexpos*(error_thresh-aerr)+new_vexpos*aerr)/error_thresh;
if (new_vexpos != old_vexpos) { /// fixing autoexposure getting stuck at new_vexpos == old_vexpos ==1
if (aerr < error_thresh) *ae_err= (*ae_err * (error_thresh-aerr))/error_thresh; /// reduce residual error
else *ae_err=0; /// reset residual error (save on division)
}
} else new_vexpos=old_vexpos;
}
MDF3(fprintf(stderr,"old_vexpos=0x%x, new_vexpos=0x%x, aerr=%d, ae_err=%d\n", old_vexpos, new_vexpos, aerr, *ae_err));
if (new_vexpos==old_vexpos) {
MDF3(fprintf(stderr,"No correction: thrshold=%d, aerr=%d\n",error_thresh,aerr)); ///======= 1 here
GLOBALPARS(G_NEXT_AE_FRAME)=frame+ae_period_nochange; /// try again next frame (extend in HDR)
return 0; /// too little error - no change in exposure
}
// *ae_err=0; /// reset error accumulator TODO: If scaled - reduce resudual error, not reset it
/// Now apply that new exposure
/// And request
/// First - see if image size was changed. If it was - use exposure (usec), not vexposure(lines)
write_data[0]= FRAMEPARS_SETFRAME;
write_data[1]= target_frame;
int wasVirtWidth= (((long long) old_expos) * framePars[target_frame & PARS_FRAMES_MASK].pars[P_CLK_SENSOR]) / 1000000/ old_vexpos;
int was_vexpos_from_expos= (((long long) old_expos) * framePars[target_frame & PARS_FRAMES_MASK].pars[P_CLK_SENSOR]) / 1000000/ framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH];
int new_expos;
MDF3(fprintf(stderr,"VIRT_WIDTH=0x%lx, wasVirtWidth=0x%x, was_vexpos_from_expos=0x%x\n", framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH], wasVirtWidth,was_vexpos_from_expos));
// if ((framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH] > (wasVirtWidth+10)) || /// real is +/-1 - got 0x888/0x880
// (framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH] < (wasVirtWidth-10))) { // changed, trigger exposure mode
if ((was_vexpos_from_expos>(old_vexpos+1)) || (was_vexpos_from_expos<(old_vexpos-1))) {
new_expos= (((long long) old_expos) * new_vexpos) / old_vexpos;
MDF1(fprintf(stderr,"Frame width changed, using absolute exposure new_expos %d (0x%x), old_expos=%d (0x%x) \n", new_expos, new_expos, old_expos,old_expos));
MDF1(fprintf(stderr,"VIRT_WIDTH=0x%lx, wasVirtWidth=0x%x\n", framePars[target_frame & PARS_FRAMES_MASK].pars[P_VIRT_WIDTH], wasVirtWidth));
write_data[2]= P_EXPOS; // | FRAMEPAIR_FORCE_NEWPROC ?
write_data[3]= new_expos;
} else {
write_data[2]= P_VEXPOS; // | FRAMEPAIR_FORCE_NEWPROC ?
write_data[3]= new_vexpos;
}
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
GLOBALPARS(G_NEXT_AE_FRAME)=frame+ae_period_change;
return 1;
}
src/aexp_corr.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : aexp_corr.h
*! DESCRIPTION: Autoexposure part of the autoexposure/white balance/hdr daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: aexp_corr.h,v $
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#ifndef __H_AUTOEXPOSURE_AEXP_CORR__
#define __H_AUTOEXPOSURE_AEXP_CORR__
void initAexpCorr(void);
int aexpCorr(int color, int frame, int target_frame);
#endif
src/aexp_utils.c 0 → 100644
View file @ 99b601c4
/**
* \file aexp_utils.c
* \brief Daemon to adjust camera exposure and white balance - utility
* functions
* \date 2008
*/
/*!***************************************************************************
*! FILE NAME : aexp_utils.c
*! DESCRIPTION: Daemon to adjust camera exposure and white balance
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: aexp_utils.c,v $
*! Revision 1.4 2008/12/01 02:32:48 elphel
*! Updated white balance to use new gains
*!
*! Revision 1.3 2008/11/30 05:04:45 elphel
*! added Doxygen file data
*!
*! Revision 1.2 2008/11/28 08:17:09 elphel
*! keeping Doxygen a little happier
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#include "autoexposure.h"
int poorLog(int x) {
/*!
0-> 0
32-> 512
64-> 768
128 ->1024
256 ->1280
0x10000000 -> 0x1900
0x80000000 -> 0x1c00
*/
if (x<0) return 0;
int y=5;
if ((x & ~0x1ff) ==0 ) { /// 0..511 gets here
while (((x & 0x100) ==0) && (y>1)) {
y--;
x <<=1;
}
if (y>1) x+=(y<<8);
return x; // 0..511
}
while (x & ~0x1ff) { /// first time always
x >>= 1;
y++;
}
return x+(y<<8);
}
int poorExp(int x) {
int y=x & 0xff;
x >>= 8;
if (x < 1) return y >> 4;
else if (x <= 5) return y >> (5-x);
else return y << (x-5);
}
int waitRequstPrevHist(unsigned long next_frame) {
unsigned long write_data[4];
this_frame=GLOBALPARS(G_THIS_FRAME);
MDF2(fprintf(stderr,"next_frame=0x%08lx, this_frame=0x%08lx\n",next_frame,this_frame)); ///======= 0 here
if (next_frame <= this_frame) return 0; /// too_late
else if (next_frame > (this_frame+5) ) { /// wait heer as it is too early to schedule histograms
lseek(fd_fparmsall, next_frame-5+LSEEK_FRAME_WAIT_ABS, SEEK_END);
this_frame=GLOBALPARS(G_THIS_FRAME);
}
/// schedule all histograms for next_frame-1
write_data[0]= FRAMEPARS_SETFRAME;
write_data[1]= next_frame-1;
write_data[2]= P_HISTRQ_YC; /// will request once all the histogtram for that frame
write_data[3]= 3; /// both
int rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
/// now wait for that next frame (if needed)
if (next_frame > this_frame ) {
lseek(fd_fparmsall, next_frame+LSEEK_FRAME_WAIT_ABS, SEEK_END);
this_frame=GLOBALPARS(G_THIS_FRAME);
return 1;
}
return 0;
}
/**
* @brief calculate pixel value corresponding so that specified fraction of all pixels have value less or equal than it
* both result and input fraction are 16.16 format, so 0x10000 is 1.0
* @param frame - absolute frame number for which percentile is requested
* @param color - color number (0 - R, 1 - G1(G), 2 - G2(GB), 3 - B). G1 is also used for autoexposure
* @param fraction - fraction of all pixels that should have value less or equal result 16.16 format - 0x10000 == 1.0 == all pixels
* @param request_colors - if 0 - use the same histogram index as already calculated, otherwise it is a bit mask of colors to request,
* i.e. (1<<color) - request only the specified color, 0xf - request all colors
* @return <0 for error, or interpalated pixel "input" value in 0..0x10000 scale
*/
long getPercentile(unsigned long frame,int color, unsigned long fraction, int request_colors) {
unsigned long * hist_cumul; /// 256 of cumulated histogram values (in pixels)
unsigned char * hist_percentile; /// 256 of rounded percentiles (1 byte) - used as a starting point for linear interpolation
int total_pixels;
int perc;
int perc_frac=0;
int frac_pixels; /// number of pixels corresponding to a specified fraction (rounded down)
int delta;
MDF2(fprintf(stderr,"percentile for frame=0x%lx, color=%x, fraction=0x%lx, request_colors=0x%x\n",frame, color, fraction, request_colors));
/// Get the histogram (including percentiles)
if (request_colors) { /// at minimum for the new frame request_colors= 1<<color
if (request_colors & ~ (1<<COLOR_Y_NUMBER)) lseek(fd_histogram_cache, LSEEK_HIST_WAIT_C, SEEK_END); /// wait for all histograms, not just Y (G1)
else lseek(fd_histogram_cache, LSEEK_HIST_WAIT_Y, SEEK_END); /// wait for just Y (G1)
MDF2(fprintf(stderr,"this_frame: 0x%lx, NOW: 0x%lx\n",this_frame, GLOBALPARS(G_THIS_FRAME)));
lseek(fd_histogram_cache, LSEEK_HIST_NEEDED + (request_colors << 8), SEEK_END); /// specify that reverse histogram(s) are needed
hist_index=lseek(fd_histogram_cache, frame, SEEK_SET); /// request histograms for the specified frame
MDF2(fprintf(stderr,"got histogram for frame: 0x%lx, NOW: 0x%lx\n",histogram_cache[hist_index].frame, GLOBALPARS(G_THIS_FRAME)));
/// histograms for frame will be available 1 frame later
if(hist_index <0) {
ELP_FERR(fprintf(stderr, "Requested histograms for frame %ld (0x%lx) are not available. this_frame=0x%lx, now=0x%lx\n",frame,frame,this_frame,GLOBALPARS(G_THIS_FRAME) ));
return -1;
}
}
hist_cumul= &(histogram_cache[hist_index].cumul_hist[color<<8]);
hist_percentile=&(histogram_cache[hist_index].percentile[color<<8]);
if (fraction > (PERCENTILE_1-1)) fraction = PERCENTILE_1-1;
total_pixels= hist_cumul[255];
frac_pixels=(((long long) total_pixels) * fraction) >> PERCENTILE_SHIFT;
perc=hist_percentile[fraction >> (PERCENTILE_SHIFT-8)]; /// 8 MSBs used as index
MDF2(fprintf(stderr,"total_pixels=0x%x, frac_pixels=0x%x, perc=0x%x\n",total_pixels, frac_pixels, perc));
if (perc>0) perc--; /// seems hist_percentile[perc] rounds up, not down
while ((perc>0) && (hist_cumul[perc] > frac_pixels)) perc--; /// adjust down (is that needed at all?)
perc++;
while ((perc<255) && (hist_cumul[perc] <= frac_pixels)) perc++; /// adjust up (is that needed at all?)
perc--;
delta=hist_cumul[perc+1] - hist_cumul[perc];
if (delta) {
perc_frac=((frac_pixels-hist_cumul[perc]) << (PERCENTILE_SHIFT-8))/delta;
}
perc_frac += perc << (PERCENTILE_SHIFT-8);
MDF2(fprintf(stderr,"hist_cumul[0x%x]=0x%lx hist_cumul[0x%x]=0x%lx, delta=0x%x, perc_frac=0x%x\n",perc,hist_cumul[perc],perc+1,hist_cumul[perc+1],delta,perc_frac));
/// here perc_frac is the intermediate result, so that (1<<PERCENTILE_SHIFT) corresponds to full scale of after-gamma data
/// Now we need to "un-gamma" it to reference to the (supposingly linear) input range that is proportional to exposure
if (setGammaIndex(color)) /// sets global gamma_index, uses global hist_index;
return gammaReverse (perc_frac);
return -1; /// error
}
/**
* @brief Sets global variable gamma_index (needed to "ungamma" fractions) using current global his_index
* @param color - color number for which gamma_index is needed
* @return gamma_index>0. 0 if not availble
*/
int setGammaIndex(int color) {
unsigned long write_data[2];
unsigned long hash32= histogram_cache[hist_index].gtab[color&3];
// MDF2(fprintf(stderr,"frame=0x%lx hist.frame=0x%lx hist_index=%d hash32=0x%lx\n",frame, histogram_cache[hist_index].frame, hist_index, hash32));
// MDF7(fprintf(stderr,"frame=0x%lx hist.frame=0x%lx hist_index=%d hash32=0x%lx\n",frame, histogram_cache[hist_index].frame, hist_index, hash32));
write_data[0]=hash32;
write_data[1]=GAMMA_MODE_NEED_REVERSE;
int rslt=write(fd_gamma_cache, write_data, 6);
if (rslt<= 0) {
ELP_FERR(fprintf(stderr,"Request for gamma returned %d, hash32=0x%lx (gamma=%f, black=%d, scale=%f)\n",rslt,hash32, 0.01*((hash32>>16) & 0xff),(int)(hash32>>24), (hash32 & 0xffff)/1024.0));
return 0;
}
gamma_index=lseek(fd_gamma_cache, 0, SEEK_CUR);
MDF2(fprintf(stderr,"gamma_index=0x%x, rslt=0x%x\n",gamma_index,rslt));
if (gamma_index <= 0) {
ELP_FERR(fprintf(stderr,"request for gamma table color=%d failed\n",color));
return 0;
}
MDF2(fprintf(stderr,"gamma_index=0x%x\n",gamma_index));
return gamma_index;
}
/**
* @brief calculates direct gamma conversion using gamma tables indexed by global gamma_index
* @param x - argument 0..0xffff (proportional to sensor data)
* @return converted result, in the range 0..0xffff (proportional to 8-bit internal data to be compressed)
*/
unsigned long gammaDirect (unsigned long x) {
if (x>0xffff) x=0xffff;
unsigned long y= gamma_cache[gamma_index].direct[x >> 8]; /// truncating , no interpolation
y+= ((gamma_cache[gamma_index].direct[(x >> 8)+1]-y)*(x & 0xff))>>8;
if (y > 0xffff) y=0xffff;
return y;
}
/**
* @brief calculates reverse gamma conversion using gamma tables indexed by global gamma_index
* @param x - argument 0..0xffff (proportional to 8-bit internal data to be compressed)
* @return converted result, in the range 0..0xffff (proportional to sensor data)
*/
unsigned long gammaReverse (unsigned long x) {
unsigned short * gamma_direct= gamma_cache[gamma_index].direct; /// [257] "Gamma" table, 16-bit for both non-scaled prototypes and scaled, 0..0xffff range (hardware will use less)
unsigned char * gamma_reverse=gamma_cache[gamma_index].reverse; /// [256] reverse table to speed-up reversing (still need interpolation).Index - most significant 8 bits, data - largest direct
if (x>0xffff) x=0xffff;
int y_frac=0;
int y=gamma_reverse[x >> 8]; /// 8 MSBs used as index
if (y>0) y--; /// seems gamma_reverse[] rounds up, not down
while ((y > 0) && (gamma_direct[y] > x)) y--; /// adjust down (is that needed at all?)
y++;
while ((y<255) && (gamma_direct[y] <= x)) y++; /// adjust up (is that needed at all?)
y--;
int delta=gamma_direct[y+1] - gamma_direct[y];
if (delta) y_frac=((x - gamma_direct[y]) << 8)/delta;
MDF2(fprintf(stderr,"y_frac=0x%x\n",y_frac));
y_frac += y << 8;
MDF2(fprintf(stderr,"gamma_direct[0x%x]=0x%x gamma_direct[0x%x]=0x%x, delta=0x%x, y_frac=0x%x\n",y, (int) gamma_direct[y],y+1,(int) gamma_direct[y+1],delta,y_frac));
/// limit just in case?
if (y_frac < 0) y_frac=0;
else if (y_frac > 0xffff) y_frac=0xffff;
return y_frac;
}
/**
* @brief return value of parameter 'index' from frame 'frame' - use pastPars if too late for framePars
* @param indx parameter indx
* @param frame absolute frame number
* @return parameter value (error will be 0xffffffff, but that could be a legitimate value too)
*/
unsigned long get_imageParamsThat (int indx, unsigned long frame) {
int frame_index= frame & PARS_FRAMES_MASK;
int past_index= frame & PASTPARS_SAVE_ENTRIES_MASK;
unsigned long value;
/// Locate frame info in framePars
if (framePars[frame_index].pars[P_FRAME] != frame) {
/// too late, try pastPars
if ((indx < PARS_SAVE_FROM) || (indx >= (PARS_SAVE_FROM+PARS_SAVE_NUM))) return 0xffffffff ; /// not saved
value=pastPars[past_index].past_pars[indx - PARS_SAVE_FROM]; /// should be retrieved before checking frame (interrupts)
if (pastPars[past_index].past_pars[P_FRAME-PARS_SAVE_FROM] != frame) { /// too late even for pastPars? Or a bug?
ELP_FERR(fprintf (stderr,"Can not find frame 0x%x data neither in framePars[0x%x].pars[0x%x]=0x%x, nor in pastPars[0x%x].past_pars[0x%x]=0x%x\n",\
(int) frame, frame_index, (int) P_FRAME, (int) framePars[frame_index].pars[P_FRAME],\
past_index, (int) (P_FRAME-PARS_SAVE_FROM), (int) pastPars[past_index].past_pars[P_FRAME-PARS_SAVE_FROM]));
return 0xffffffff;
}
} else {
value=framePars[frame_index].pars[indx];
}
return value;
}
/**
* @brief return value of parameter 'indx' from frame 'frame' - use pastPars if too late for framePars (31 bits only)
* @param indx parameter index
* @param frame absolute frame number
* @return <0 - error, otherwise parameter lower 31 bits of the parameter value
*/
int get_imageParamsThatValid(int indx, unsigned long frame) {
int frame_index= frame & PARS_FRAMES_MASK;
int past_index= frame & PASTPARS_SAVE_ENTRIES_MASK;
int value;
/// Locate frame info in framePars
if (framePars[frame_index].pars[P_FRAME] != frame) {
/// too late, try pastPars
if ((indx < PARS_SAVE_FROM) || (indx >= (PARS_SAVE_FROM+PARS_SAVE_NUM))) return -2 ; /// not saved
value=pastPars[past_index].past_pars[indx - PARS_SAVE_FROM] & 0x7fffffff;
if (pastPars[past_index].past_pars[P_FRAME-PARS_SAVE_FROM] != frame) { /// too late even for pastPars? Or a bug?
ELP_FERR(fprintf (stderr,"Can not find frame 0x%x data neither in framePars[0x%x].pars[0x%x]=0x%x, nor in pastPars[0x%x].past_pars[0x%x]=0x%x\n",\
(int) frame, frame_index, (int) P_FRAME, (int) framePars[frame_index].pars[P_FRAME],\
past_index, (int) (P_FRAME-PARS_SAVE_FROM), (int) pastPars[past_index].past_pars[P_FRAME-PARS_SAVE_FROM]));
return -1;
}
} else {
value=framePars[frame_index].pars[indx] & 0x7fffffff;
}
return value ;
}
/**
* @brief Measure the percentile input (sensor) level for the specified by [P_AEXP_FRACPIX] fraction of all pixels
* for VEXPOS = 1 line, use that as a zero level for exposure calculations
* @return 0 - OK
*/
int recalibrateDim(void) {
unsigned long vexpos_was, fraction, dims;
unsigned long write_data[4];
int rslt;
this_frame=GLOBALPARS(G_THIS_FRAME);
MDF1(fprintf(stderr,"this_frame: 0x%lx\n",this_frame));
unsigned long target_frame=this_frame+RECALIBRATE_AHEAD;
vexpos_was= framePars[target_frame & PARS_FRAMES_MASK].pars[P_VEXPOS];
fraction= framePars[target_frame & PARS_FRAMES_MASK].pars[P_AEXP_FRACPIX];
MDF1(fprintf(stderr,"this_frame: 0x%lx target_frame: 0x%lx\n",this_frame,target_frame));
write_data[0]=FRAMEPARS_SETFRAME;
write_data[1]= target_frame;
write_data[2]= P_VEXPOS; // | FRAMEPAIR_FORCE_NEWPROC ?
write_data[3]= 1;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
write_data[1]= target_frame+RECALIBRATE_AFTER; /// or is +1 enough? 2 seems to be required for Micron free running mode, for async 1 is OK
write_data[3]= vexpos_was;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
/// no error check here
dims= getPercentile(target_frame,0, fraction, 0xf) & 0xffff; /// all colors are needed. Will skip frames
dims|=getPercentile(target_frame,1, fraction, 0xf) << 16;
GLOBALPARS(G_HIST_DIM_01)=dims;
dims= getPercentile(target_frame,2, fraction, 0xf) & 0xffff; /// all colors are needed. Will skip frames
dims|=getPercentile(target_frame,3, fraction, 0xf) << 16;
GLOBALPARS(G_HIST_DIM_23)=dims;
MDF1(fprintf(stderr,"dims: 0x%lx NOW: 0x%lx\n",dims, GLOBALPARS(G_THIS_FRAME)));
lseek(fd_histogram_cache, target_frame+RECALIBRATE_AFTER, SEEK_SET); ///
return 0;
}
src/aexp_utils.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : aexp_utils.h
*! DESCRIPTION: Daemon to adjust camera exposure and white balance
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: aexp_utils.h,v $
*! Revision 1.2 2008/12/01 02:32:48 elphel
*! Updated white balance to use new gains
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#ifndef __H_AUTOEXPOSURE_AEXP_UTILS__
#define __H_AUTOEXPOSURE_AEXP_UTILS__
unsigned long get_imageParamsThat (int indx, unsigned long frame);
int get_imageParamsThatValid(int indx, unsigned long frame);
int setGammaIndex(int color);
long getPercentile(unsigned long frame,int color, unsigned long fraction,int request_colors);
int recalibrateDim(void);
unsigned long gammaDirect (unsigned long x);
unsigned long gammaReverse (unsigned long x);
int waitRequstPrevHist(unsigned long next_frame);
int poorLog(int x);
int poorExp(int x);
#define get_imageParamsThis(x) ( framePars[this_frame & PARS_FRAMES_MASK].pars[x])
#endif
src/autoexposure.c 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : autoexposure.c
*! DESCRIPTION: Daemon to adjust camera exposure and white balance
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: autoexposure.c,v $
*! Revision 1.8 2012/04/08 04:10:36 elphel
*! rev. 8.2.2 - added temperature measuring daemon, related parameters for logging SFE and system temperatures
*!
*! Revision 1.7 2010/12/16 16:52:15 elphel
*! working on HDR autoexposure
*!
*! Revision 1.6 2010/12/15 16:46:44 elphel
*! autoexposure correction: hdr synchronization
*!
*! Revision 1.5 2010/12/14 23:14:18 dzhimiev
*! 1. fixed waiting time for daemons to die
*! 2. + comments
*!
*! Revision 1.4 2008/12/11 17:10:56 elphel
*! Skipping one extra frame at startup of autoexposure
*!
*! Revision 1.3 2008/12/10 02:07:53 elphel
*! removed obsolete debug output
*!
*! Revision 1.2 2008/12/02 19:13:10 elphel
*! It now waits for frame #9 before starting. TODO: make other detection of good frames
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.16 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.15 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*! Revision 1.14 2008/11/15 07:05:38 elphel
*! implemented analog gain control (in addition to gammas) while while balancing
*!
*! Revision 1.13 2008/11/15 03:10:13 elphel
*! Some parameters renamed, reassigned.
*!
*! Revision 1.12 2008/11/14 07:13:32 elphel
*! Added gammaReverse() and gammaDirect() functions, TODO lists, bug fixes
*!
*! Revision 1.11 2008/11/14 01:01:59 elphel
*! cleared debug output
*!
*! Revision 1.10 2008/11/13 05:40:45 elphel
*! 8.0.alpha16 - modified histogram storage, profiling
*!
*! Revision 1.9 2008/11/08 05:52:21 elphel
*! debug feature
*!
*! Revision 1.8 2008/11/04 17:40:34 elphel
*! comment typos
*!
*! Revision 1.7 2008/11/02 00:32:35 elphel
*! added TODO
*!
*! Revision 1.6 2008/10/31 18:26:32 elphel
*! Adding support for constants like SENSOR_REGS32 (defined constant plus 32 to simplify referencing sensor registers from PHP
*!
*! Revision 1.5 2008/10/29 04:18:28 elphel
*! v.8.0.alpha10 made a separate structure for global parameters (not related to particular frames in a frame queue)
*!
*! Revision 1.4 2008/10/28 07:05:12 elphel
*! implemented white balance, HDR mode (1/1 and 2/2)
*!
*! Revision 1.3 2008/10/26 05:55:38 elphel
*! snapshot
*!
*! Revision 1.2 2008/10/25 19:49:15 elphel
*! 8.0.alpha8 - added autoexposure to the installation
*!
*! Revision 1.1 2008/10/24 00:34:12 elphel
*! initial release
*!
*/
#include "autoexposure.h"
int main (int argc, char *argv[]) {
int daemon_bit=0; ///TODO: - make it an argument
// int perc;
int rslt, ae_rslt;
int hdr_mode; /// 0 - off, 1 each other frame, 2 - 2 on, 2 - off
unsigned long vexp , old_vexp, old_that_vexpos;
int exp_ahead;
unsigned long next_frame;
const char usage[]= "Usage:\n%s [-b <daemon_bit_number> [-d <debug_bits>]]\n\n"
"Start autoexposure daemon, bind it to bit <daemon_bit_number> (0..31) in P_DAEMON_EN (ELPHEL_DAEMON_EN in PHP)\n"
"Optional debug_bits (hex number) enable different groups of debug messages (1 group per bit) to stderr\n\n";
if (argc < 2) {
daemon_bit=DAEMON_BIT_AUTOEXPOSURE;
} else if ((argc < 3) || (strcasecmp(argv[1], "-b"))) {
printf (usage,argv[0]);
return 0;
}
if ((argc >=5) && (strcasecmp(argv[3], "-d")==0)) {
autoexposure_debug=strtol(argv[4], NULL, 16);
} else autoexposure_debug=1;
daemon_bit=strtol(argv[2], NULL, 10);
if ((daemon_bit<0) || (daemon_bit>31)) {printf ("Invalid bit number %d (should be 0..31)\n", daemon_bit); exit (1);}
fprintf(stderr,"autoexposure started, daemon_bit=0x%x, debug=0x%x\n",daemon_bit,autoexposure_debug);
// MDF1(fprintf(stderr,"\n"));
if (initFilesMmap()<0) exit (1); /// initialization errors
if (autoexposure_debug <0) { /// tempoorary hack for testing
GLOBALPARS(G_DEBUG)=0;
exit (0);
}
MDF0(fprintf(stderr,"autoexposure started, daemon_bit=0x%x, debug=0x%x\n",daemon_bit,autoexposure_debug));
/// Next function call will wait until the daemon_bit will be enabled in [P_DAEMON_EN] giving a chance to other applications to initialize
/// TODO: Find why earlier frames have bad histograms - frame 6 - 0 pixels, frame 7 - 0x3fff pixels and only 8-th has total_pixels=0x4c920
/// For now - just wait for frame 9 (it will use histogram from frame 8)
// lseek(fd_fparmsall,9+LSEEK_FRAME_WAIT_ABS, SEEK_END); /// skip 2 frames (first got 0 pixels, 2- 0x3fff)
lseek(fd_fparmsall,10+LSEEK_FRAME_WAIT_ABS, SEEK_END); /// skip 3 frames (first got 0 pixels, 2- 0x3fff) - one extra, sometimes it is needed
while (1) { /// restart loop
if (initParams(daemon_bit)<0) exit (1); /// initialization errors
/// Main loop
while (1) {
this_frame=GLOBALPARS(G_THIS_FRAME);
MDF6(fprintf(stderr,"Waiting for autoexposure daemon to be enabled\n"));
lseek(fd_histogram_cache, LSEEK_DAEMON_HIST_Y+daemon_bit, SEEK_END); /// wait for autoexposure daemon to be enabled (let it sleep if not)
if (GLOBALPARS(G_THIS_FRAME) != this_frame) {
///TODO: Make it possible for this_frame to lag slightly (1 frame) to compensate for CPU being busy with other tasks?
/// Need to re-initialize after long sleep
if (initParams(daemon_bit)<0) exit (1); /// initialization errors
}
/// Is exposure black level calibration requested (will produce 2 (or 1, depending on trigger mode?) dark frames
if (GLOBALPARS(G_HIST_DIM_01)==0xffffffff) {
rslt=recalibrateDim();
MDF1(fprintf(stderr,"G_HIST_DIM_01: 0x%08lx, G_HIST_DIM_23: 0x%08lx, recalibrateDim()->%d\n",GLOBALPARS(G_HIST_DIM_01),GLOBALPARS(G_HIST_DIM_23),rslt));
this_frame=GLOBALPARS(G_THIS_FRAME);
}
/// In HDR mode make sure we skip those different frames;
hdr_mode=get_imageParamsThis(P_HDR_DUR);
if (hdr_mode>2) hdr_mode=2;
if (hdr_mode>0) {
skipHDR(hdr_mode,this_frame);
this_frame=GLOBALPARS(G_THIS_FRAME);
}
exp_ahead=get_imageParamsThis(P_EXP_AHEAD);
if (!exp_ahead) exp_ahead = 3;
int hdr_target_frame=this_frame+exp_ahead;
/// debugging
old_vexp=framePars[(this_frame+exp_ahead) & PARS_FRAMES_MASK].pars[P_VEXPOS];
old_that_vexpos= get_imageParamsThatValid(P_VEXPOS, this_frame-1);
MDF3(fprintf(stderr, "this_frame= 0x%x, this_frame+exp_ahead= 0x%x, old_vexp= 0x%x, old_that_vexpos = 0x%x\n", (int) this_frame,(int) (this_frame+exp_ahead), (int) old_vexp, (int) old_that_vexpos));
if (hdr_mode>0) { /// align target autoexposure frame to hdr mode
if (hdr_target_frame & 1) hdr_target_frame++;
if ((hdr_mode>1) && (hdr_target_frame & 2)) hdr_target_frame+=2;
/// if it is too far ahead, wait some frames
if ((hdr_target_frame-this_frame)>(exp_ahead+1)) {
lseek(fd_fparmsall, (hdr_target_frame-exp_ahead-1)+LSEEK_FRAME_WAIT_ABS, SEEK_END);
this_frame=GLOBALPARS(G_THIS_FRAME);
}
exp_ahead=hdr_target_frame-this_frame;
}
old_vexp=framePars[(this_frame+exp_ahead) & PARS_FRAMES_MASK].pars[P_VEXPOS];
old_that_vexpos= get_imageParamsThatValid(P_VEXPOS, this_frame-1);
MDF3(fprintf(stderr, "this_frame= 0x%x, this_frame+exp_ahead= 0x%x, old_vexp= 0x%x, old_that_vexpos = 0x%x\n", (int) this_frame,(int) (this_frame+exp_ahead), (int) old_vexp, (int) old_that_vexpos));
if (((ae_rslt=aexpCorr(COLOR_Y_NUMBER, this_frame, this_frame+exp_ahead )))<0) break; /// restart on errors
//GLOBALPARS(G_AE_INTEGERR)
vexp= framePars[(this_frame+exp_ahead) & PARS_FRAMES_MASK].pars[P_VEXPOS];
next_frame=GLOBALPARS(G_NEXT_AE_FRAME);
if (ae_rslt>0) MDF1(fprintf(stderr,"aexpCorr(0x%x, 0x%lx, 0%lx) -> %d, VEXPOS will be 0x%lx (0x%lx , 0x%lx), next_frame=0x%lx\n", COLOR_Y_NUMBER,this_frame,this_frame+exp_ahead,ae_rslt,vexp,old_vexp, old_that_vexpos,next_frame));
/// WB processing
rslt=whiteBalanceCorr(this_frame, this_frame+exp_ahead, ae_rslt );
if (rslt>0) MDF2(fprintf(stderr,"whiteBalanceCorr(0x%lx, 0%lx) -> %d\n",this_frame,this_frame+exp_ahead,rslt));
if (rslt<0) break; /// restart on errors
/// TODO:Add HDR here
// int hdr_target_frame;
if (hdr_mode>0) {
rslt=exposureHDR(this_frame, this_frame+exp_ahead);
MDF3(fprintf(stderr,"exposureHDR(0x%lx, 0%x) -> %d\n",this_frame,hdr_target_frame,rslt));
if (rslt<0) break; /// restart on errors
// if (rslt>0) next_frame=this_frame+4;
next_frame=hdr_target_frame;
}
/// need to wait for the next_frame here, requesting histogram(s) for it.
/// if it is far in the future - wait so we can schedule histograms ahead of time - both?
MDF6(fprintf(stderr,"Waiting for the next frame = 0x%x\n", (int) next_frame));
waitRequstPrevHist(next_frame);
/// Will process WB after exposure, don't chnage next_frame to next_frame_wb
/// histograms are only availble for the previous frame, so this_frame-1
/*
perc=getPercentile(next_frame-1,COLOR_Y_NUMBER, framePars[next_frame & PARS_FRAMES_MASK].pars[P_AEXP_FRACPIX], 1 << COLOR_Y_NUMBER);
MDF6(fprintf(stderr,"FRAME: 0x%lx, COLOR: %d, FRACTION: 0x%04lx RESULT:0x%04x, NOW: 0x%lx\n",next_frame-1,COLOR_Y_NUMBER,framePars[next_frame & PARS_FRAMES_MASK].pars[P_AEXP_FRACPIX],perc,GLOBALPARS(G_THIS_FRAME)));
*/
}
ELP_FERR(fprintf (stderr,"Restarting autoexposure due to errors, skipping a frame\n"));
lseek(fd_fparmsall, GLOBALPARS(G_THIS_FRAME) + 1+LSEEK_FRAME_WAIT_ABS, SEEK_END);
}
return 0;
}
src/autoexposure.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : autoexposure.h
*! DESCRIPTION:
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: autoexposure.h,v $
*! Revision 1.2 2009/02/25 17:47:51 spectr_rain
*! removed deprecated dependency
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*/
#ifndef __H_AUTOEXPOSURE__
#define __H_AUTOEXPOSURE__
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
//#include <ctype.h>
//#include <getopt.h>
#include <time.h>
#include <string.h>
#include <syslog.h>
#include <netinet/in.h>
#include <sys/mman.h> /* mmap */
#include <sys/ioctl.h>
#include <asm/elphel/c313a.h>
#include <asm/elphel/exifa.h>
#include <asm/byteorder.h>
#include "aexp_utils.h"
#include "aexp_corr.h"
#include "white_balance.h"
#include "hdr_control.h"
#include "globalsinit.h"
//#if ELPHEL_DEBUG
#define THIS_DEBUG 1
//#else
// #define THIS_DEBUG 0
//#endif
//#define ELP_FERR(x) printf(stderr,"%s:%d:%s: ERROR ",__FILE__,__LINE__,__FUNCTION__); x
#if THIS_DEBUG
#define MDF0(x) { if (autoexposure_debug & (1 << 0)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF1(x) { if (autoexposure_debug & (1 << 1)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF2(x) { if (autoexposure_debug & (1 << 2)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
// #define MDF2(x)
#define MDF3(x) { if (autoexposure_debug & (1 << 3)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
// #define MDF3(x)
#define MDF4(x) { if (autoexposure_debug & (1 << 4)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF5(x) { if (autoexposure_debug & (1 << 5)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF6(x) { if (autoexposure_debug & (1 << 6)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF7(x) { if (autoexposure_debug & (1 << 7)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#else
#define MDF0(x)
#define MDF1(x)
#define MDF2(x)
#define MDF3(x)
#define MDF4(x)
#define MDF5(x)
#define MDF6(x)
#define MDF7(x)
#endif
#define START_SKIP_FRAMES 8 // don't try autoexposure until this number of frames after startup
#define get_imageParamsThis(x) ( framePars[this_frame & PARS_FRAMES_MASK].pars[x])
#define min(x,y) ((x<y)?x:y)
//#define get_imageParamsThis(x) ( framePars[this_frame & PARS_FRAMES_MASK].pars[x])
#define RECALIBRATE_AHEAD 3 // Darken frame 3 ahead of current to measure histograms
#define EXPOS_AHEAD 3 // minimal frames ahead of the current to set VEXPOS
#define DEFAULT_AE_PERIOD_CHANGE 4
#define DEFAULT_AE_PERIOD_NOCHANGE 1
#define DEFAULT_WB_PERIOD_CHANGE 16
#define DEFAULT_WB_PERIOD_NOCHANGE 4
#define RECALIBRATE_AFTER 2 // number of dim frames
#define DEFAULT_BLACK_CALIB 0xa00
#define HDR_PATTERN1_8 0xaa
#define HDR_PATTERN2_8 0x66
#define HDR_PATTERN1 (HDR_PATTERN1_8 | (HDR_PATTERN1_8 << 8) | (HDR_PATTERN1_8 << 16) | (HDR_PATTERN1_8 << 24))
#define HDR_PATTERN2 (HDR_PATTERN2_8 | (HDR_PATTERN2_8 << 8) | (HDR_PATTERN2_8 << 16) | (HDR_PATTERN2_8 << 24))
#define DEFAULT_WB_WHITELEV 0xfae1 // 98%
#define DEFAULT_WB_WHITEFRAC 0x028f // 1%
#define PERCENTILE_SHIFT 16
#define PERCENTILE_1 (1 << PERCENTILE_SHIFT)
#endif
src/globalsinit.c 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : globalsinit.c
*! DESCRIPTION: Opens files, mmap-s data structures, initializes variables
*! For the autoexposure daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: globalsinit.c,v $
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#include "autoexposure.h"
int fd_fparmsall, fd_histogram_cache, fd_gamma_cache;
struct framepars_all_t *frameParsAll;
struct framepars_t *framePars;
unsigned long *globalPars;
struct framepars_past_t *pastPars;
struct histogram_stuct_t * histogram_cache; /// array of histograms
/// gamma cache is needed to re-linearize the data
struct gamma_stuct_t * gamma_cache; /// array of gamma structures
int hist_index; /// to preserve it between calls
int gamma_index; /// to preserve it between calls
int aex_recover_cntr;
unsigned long this_frame;
int autoexposure_debug;
/**
* @brief open required files, mmap theurt data structures
* uses global variables for files and mmap-ed data so they are accessible everywhere
* @return 0 - OK, <0 - problems opening/mma-ing
*/
int initFilesMmap(void) {
const char framepars_driver_name[]="/dev/frameparsall";
const char histogram_driver_name[]="/dev/histogram_cache";
const char gamma_driver_name[]= "/dev/gamma_cache";
///Frame parameters file open/mmap (read/write)
fd_fparmsall= open(framepars_driver_name, O_RDWR);
if (fd_fparmsall <0) {
ELP_FERR(fprintf(stderr, "Open failed: (%s)\r\n", framepars_driver_name));
return -1;
}
frameParsAll = (struct framepars_all_t *) mmap(0, sizeof (struct framepars_all_t) * HISTOGRAM_CACHE_NUMBER , PROT_READ | PROT_WRITE, MAP_SHARED, fd_fparmsall, 0);
if((int) frameParsAll == -1) {
ELP_FERR(fprintf(stderr, "problems with mmap: %s\n", framepars_driver_name));
close (fd_fparmsall);
return -1;
}
framePars = frameParsAll->framePars;
pastPars = frameParsAll->pastPars;
globalPars= frameParsAll->globalPars;
///Histogrames file open/mmap (readonly)
fd_histogram_cache= open(histogram_driver_name, O_RDONLY);
if (fd_histogram_cache <0) {
ELP_FERR(fprintf(stderr, "Open failed: (%s)\r\n", histogram_driver_name));
close (fd_fparmsall);
return -1;
}
histogram_cache = (struct histogram_stuct_t *) mmap(0, sizeof (struct histogram_stuct_t) * HISTOGRAM_CACHE_NUMBER , PROT_READ, MAP_SHARED, fd_histogram_cache, 0);
if((int) histogram_cache == -1) {
ELP_FERR(fprintf(stderr, "problems with mmap: %s\n", histogram_driver_name));
close (fd_fparmsall);
close (fd_histogram_cache);
return -1;
}
///Gamma tables file open/mmap (readonly)
fd_gamma_cache= open(gamma_driver_name, O_RDWR);
if (fd_gamma_cache <0) {
ELP_FERR(fprintf(stderr, "Open failed: (%s)\r\n", gamma_driver_name));
close (fd_fparmsall);
close (fd_histogram_cache);
return -1;
}
gamma_cache = (struct gamma_stuct_t *) mmap(0, sizeof (struct gamma_stuct_t) * GAMMA_CACHE_NUMBER , PROT_READ, MAP_SHARED, fd_gamma_cache, 0);
if((int) gamma_cache == -1) {
ELP_FERR(fprintf(stderr, "problems with mmap: %s\n", gamma_driver_name));
close (fd_fparmsall);
close (fd_histogram_cache);
close (fd_gamma_cache);
return -1;
}
return 0; /// All initialized
}
/**
* @brief give a chance for other applications to initialize P_* parameters related to autoexposure functionality
* so the daemon itself can be started early
* @return just 0 for now
*/
int initParams(int daemon_bit) {
aex_recover_cntr=0;
lseek(fd_histogram_cache, LSEEK_DAEMON_HIST_Y+daemon_bit, SEEK_END); /// wait for autoexposure daemon to be enabled
GLOBALPARS(G_AE_INTEGERR)=0; /// reset running error
GLOBALPARS(G_WB_INTEGERR)=0; /// reset running error
this_frame=GLOBALPARS(G_THIS_FRAME); /// set global frame number
if (GLOBALPARS(G_HIST_DIM_01)==0) {
GLOBALPARS(G_HIST_DIM_01)=DEFAULT_BLACK_CALIB | (DEFAULT_BLACK_CALIB <<16);
GLOBALPARS(G_HIST_DIM_23)=DEFAULT_BLACK_CALIB | (DEFAULT_BLACK_CALIB <<16);
return 1 ; /// used default, no real calibration
}
//#define P_AUTOEXP_EXP_MAX 81 //unsigned long exp_max; /* 100 usec == 1 etc... */
initAexpCorr();
initWhiteBalanceCorr();
return 0;
}
src/globalsinit.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : globalsinit.h
*! DESCRIPTION: Daemon to adjust camera exposure and white balance
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: globalsinit.h,v $
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#ifndef __H_AUTOEXPOSURE_GLOBALSINIT__
#define __H_AUTOEXPOSURE_GLOBALSINIT__
/// Global variables
extern int fd_fparmsall;
extern int fd_histogram_cache;
extern int fd_gamma_cache;
extern struct framepars_all_t * frameParsAll;
extern struct framepars_t * framePars;
extern unsigned long * globalPars;
extern struct framepars_past_t * pastPars;
extern struct histogram_stuct_t * histogram_cache; /// array of histograms
/// gamma cache is needed to re-linearize the data
extern struct gamma_stuct_t * gamma_cache; /// array of gamma structures
extern int hist_index; /// to preserve it between calls
extern int gamma_index; /// to preserve it between calls
extern int aex_recover_cntr;
extern unsigned long this_frame;
extern int autoexposure_debug;
int initFilesMmap(void);
int initParams(int daemon_bit);
#endif
src/hdr_control.c 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : hdr_control.c
*! DESCRIPTION: HDR part of the autoexposure/white balance/hdr daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: hdr_control.c,v $
*! Revision 1.4 2011/05/20 21:42:04 elphel
*! different debug levels
*!
*! Revision 1.3 2010/12/16 16:52:15 elphel
*! working on HDR autoexposure
*!
*! Revision 1.2 2010/12/15 16:46:44 elphel
*! autoexposure correction: hdr synchronization
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#include "autoexposure.h"
//#define P_HDR_DUR 168 // 0 - HDR 0ff, >1 - duration of same exposure (currently 1 or 2 - for free running)
//#define P_HDR_VEXPOS 169 // if less than 0x10000 - number of lines of exposure, >=10000 - relative to "normal" exposure
int exposureHDR (int frame, int target_frame) {
unsigned long write_data[4];
int target_frame8=target_frame & PARS_FRAMES_MASK;
int HDR_mode;
int vexpos, vexpos_HDR;
int rslt;
if (!((HDR_mode=framePars[target_frame8].pars[P_HDR_DUR]))) return 0; /// HDR mode is disabled
MDF5(fprintf(stderr,"frame=0x%x target_frame=0x%x GLOBALPARS(G_THIS_FRAME)=0x%x\n",(int) frame, (int) target_frame, (int)GLOBALPARS(G_THIS_FRAME)));
if ((HDR_mode<1) || (HDR_mode>2)) {
ELP_FERR(fprintf(stderr, "Wrong HDR mode %d (only 1 or 2 are supported)\n",HDR_mode));
return -1;
}
/// maybe expos (not vexpos!) was just written by autoexposure, not yet recalculated from expos to vexpos
switch (HDR_mode) {
case 1:
lseek(fd_fparmsall, frame+1 +LSEEK_FRAME_WAIT_ABS, SEEK_END);
break;
case 2:
lseek(fd_fparmsall, frame+2 +LSEEK_FRAME_WAIT_ABS, SEEK_END);
break;
}
vexpos= framePars[target_frame8].pars[P_VEXPOS];
vexpos_HDR=framePars[target_frame8].pars[P_HDR_VEXPOS];
if (vexpos_HDR>=0x10000) vexpos_HDR= (((long long) vexpos_HDR) * vexpos) >> 16;
write_data[0]= FRAMEPARS_SETFRAME;
write_data[2]= P_VEXPOS; // | FRAMEPAIR_FORCE_NEWPROC ?
/// program next two frames after target_frame
MDF1(fprintf(stderr,">>>>>HDR_mode=%d, write: %08lx %08lx %08lx %08lx\n",HDR_mode,write_data[0],write_data[1],write_data[2],write_data[3]));
switch (HDR_mode) {
case 1:
write_data[1]= target_frame+1;
write_data[3]= vexpos_HDR;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
MDF1(fprintf(stderr,"write: %08lx %08lx %08lx %08lx -> %d\n",write_data[0],write_data[1],write_data[2],write_data[3],rslt));
if (rslt < sizeof(write_data)) return -errno;
write_data[1]= target_frame+2;
write_data[3]= vexpos;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
MDF5(fprintf(stderr,"write: %08lx %08lx %08lx %08lx -> %d\n",write_data[0],write_data[1],write_data[2],write_data[3],rslt));
break;
case 2:
write_data[1]= target_frame+2;
write_data[3]= vexpos_HDR;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
MDF1(fprintf(stderr,"write: %08lx %08lx %08lx %08lx -> %d\n",write_data[0],write_data[1],write_data[2],write_data[3],rslt));
break;
}
/// skip 2 frames from 'frame' (use absolute to add tolerance against being too late)
lseek(fd_fparmsall, frame + 2+LSEEK_FRAME_WAIT_ABS, SEEK_END);
switch (HDR_mode) {
case 1:
write_data[1]= target_frame+3;
write_data[3]= vexpos_HDR;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
MDF1(fprintf(stderr,"write: %08lx %08lx %08lx %08lx -> %d\n",write_data[0],write_data[1],write_data[2],write_data[3],rslt));
write_data[1]= target_frame+4;
write_data[3]= vexpos;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
MDF1(fprintf(stderr,"write: %08lx %08lx %08lx %08lx -> %d\n",write_data[0],write_data[1],write_data[2],write_data[3],rslt));
break;
case 2:
write_data[1]= target_frame+4;
write_data[3]= vexpos;
rslt=write(fd_fparmsall, write_data, sizeof(write_data));
if (rslt < sizeof(write_data)) return -errno;
MDF1(fprintf(stderr,"write: %08lx %08lx %08lx %08lx -> %d\n",write_data[0],write_data[1],write_data[2],write_data[3],rslt));
break;
}
return 1;
}
/**
* @brief in HDR mode - wait until we get a histogram from a normal frame (only needed to re-sync after long delays
* uses global variables for files and mmap-ed data so they are accessible everywhere
* @return 0 - OK, <0 - problems opening/mma-ing
* BUG: Does not seem to work at all !
*/
int skipHDR(int mode, unsigned long frame) {
int patt;
int skip;
MDF5(fprintf(stderr,"mode=%d frame=0x%x GLOBALPARS(G_THIS_FRAME)=0x%x\n",(int) mode, (int) frame, (int)GLOBALPARS(G_THIS_FRAME)));
switch (mode) {
case 0: return 0;
case 1: patt=HDR_PATTERN1;
break;
case 2: patt=HDR_PATTERN2;
break;
default: return -1;
}
patt >>= (frame & PARS_FRAMES_MASK);
if (patt & 1) return 0;
skip=0;
while (patt && !(patt & 1)) {
patt >>= 1;
skip++;
}
lseek(fd_histogram_cache, LSEEK_HIST_WAIT_Y, SEEK_END); /// wait for Y only
lseek(fd_histogram_cache, LSEEK_HIST_NEEDED + 0, SEEK_END); /// nothing needed, just waiting for some frames to be skipped
// lseek(fd_histogram_cache, skip, SEEK_CUR); /// just wait until the Y histogram will available for non-HDR frame
// lseek(fd_histogram_cache, skip-1, SEEK_CUR); /// just wait until the Y histogram will available for non-HDR frame
lseek(fd_histogram_cache, skip, SEEK_CUR); /// just wait until the Y histogram will available for non-HDR frame
MDF5(fprintf(stderr,"mode=%d frame=0x%x skip=%d GLOBALPARS(G_THIS_FRAME)=0x%x\n",(int) mode, (int) frame, (int) skip, (int)GLOBALPARS(G_THIS_FRAME)));
return 1;
}
src/hdr_control.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : hdr_control.h
*! DESCRIPTION: HDR part of the autoexposure/white balance/hdr daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: hdr_control.h,v $
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#ifndef __H_AUTOEXPOSURE_HDR_CONTROL__
#define __H_AUTOEXPOSURE_HDR_CONTROL__
int skipHDR(int mode, unsigned long frame);
int exposureHDR (int frame, int target_frame);
#endif
src/temperature.c 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : temperature.c
*! DESCRIPTION: Daemon to measure sensor (100338 rev E) and/or system temperature
*! Copyright (C) 2012 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: temperature.c,v $
*! Revision 1.2 2012/04/16 00:23:53 elphel
*! temperature daemon waits for the daemon enable bit to be set and skips one frame before probing devices
*!
*! Revision 1.1 2012/04/08 04:10:36 elphel
*! rev. 8.2.2 - added temperature measuring daemon, related parameters for logging SFE and system temperatures
*!
*!
*/
#include "temperature.h"
int fd_fparmsall;
struct framepars_all_t *frameParsAll;
struct framepars_t *framePars;
unsigned long *globalPars;
// struct framepars_past_t *pastPars;
unsigned long this_frame;
int temperature_debug;
int slaves[]= {0x90, 0x30, 0x34, 0x38, 0x3c};
char bus0slow[]={11,11, 1, 1, 7, 7};
char bus0dflt[]={ 2, 2, 1, 1, 7, 7}; // will be updated
int tempIndices[]={0,1,1,2,3}; // where to write result
short * tempData;
long long due_time;
long long due_times[5];
long long now;
unsigned long thisFrame;
long long thatTime;
unsigned long thatFrame;
long long period_us;
long long individual_period_us;
const char SA56004X_LTM=0x0;
const char SA56004X_LTL=0x22;
const char MCP98242_LT=0x5;
const char MCP98242_RESOL=0x8;
int initFrameParsMmap(void);
long long getNowTime(void);
int readTemperature(int indx);
int setResolution(int indx);
int main (int argc, char *argv[]) {
int daemon_bit=DAEMON_BIT_TEMPERATURE;
// int rslt;
// unsigned long prev_seconds=0,prev_useconds=0;
// int delta_msec;
// unsigned long next_frame;
const char usage[]= "Usage:\n%s [-b <daemon_bit_number> | -nodaemon [-d <debug_bits>]]\n\n"
"Start temperature measurement daemon, bind it to bit <daemon_bit_number> (0..31, defaults to %d) in P_DAEMON_EN (ELPHEL_DAEMON_EN in PHP).\n"
"-nodaemon makes the program update temperatures once and exit.\n"
"Optional debug_bits (hex number) enable different groups of debug messages (1 group per bit) to stderr.\n\n";
if (argc < 2) {
daemon_bit=DAEMON_BIT_TEMPERATURE;
} else if (strcasecmp(argv[1], "-nodaemon")==0) {
daemon_bit=-1;
} else if ((argc < 3) || ((strcasecmp(argv[1], "-b") && (strcasecmp(argv[1], "-d"))))) {
printf (usage,argv[0],daemon_bit);
return 0;
} else {
daemon_bit=strtol(argv[2], NULL, 10);
}
if ((argc >=2) && (strcasecmp(argv[argc-2], "-d")==0)) {
temperature_debug=strtol(argv[argc-1], NULL, 16);
} else temperature_debug=1;
if (daemon_bit>31) {printf ("Invalid bit number %d (should be 0..31)\n", daemon_bit); exit (1);}
if (daemon_bit>=0) fprintf(stderr,"Temperature monitor started, daemon_bit=0x%x\n",daemon_bit);
else fprintf(stderr,"Temperature monitor in no-daemon mode (single run)\n");
if (initFrameParsMmap()<0) exit (1); /// initialization errors
// lseek(fd_fparmsall,10+LSEEK_FRAME_WAIT_ABS, SEEK_END); /// skip 3 frames (first got 0 pixels, 2- 0x3fff) - one extra, sometimes it is needed
tempData= (short *) &(GLOBALPARS(G_TEMPERATURE01)); // 2 32-bit words
now=getNowTime();
int numTemperatureDevices=0;
int indx;
period_us=((long long)1000)*((long long) get_imageParamsThis(P_TEMPERATURE_PERIOD));
if (daemon_bit>=0){ // skip frame to make sure the 10359 is programmed
lseek(fd_fparmsall, LSEEK_DAEMON_FRAME+daemon_bit, SEEK_END); /// wait for temperature daemon to be enabled (let it sleep if not)
lseek(fd_fparmsall, LSEEK_FRAME_WAIT_REL+1, SEEK_END);
}
for (indx=0;indx<5;indx++){
int result=readTemperature(indx);
if (result<0) slaves[indx]=-1;
else {
tempData[tempIndices[indx]]=result;
due_times[indx]=now+period_us;
numTemperatureDevices++;
MDF3(fprintf(stderr,"Due time %d %d ms\n",indx, (int)((due_times[indx]/((long long)1000)) & 0x7fffffff)));
if (indx>0) setResolution(indx);
}
}
if (numTemperatureDevices==0){
fprintf(stderr,"No temperature measurement devices found, exiting.");
return 0;
}
individual_period_us=period_us/numTemperatureDevices;
due_time=now+individual_period_us;
MDF3(fprintf(stderr,"Due time %d ms\n", (int)((due_time/((long long)1000)) & 0x7fffffff)));
if (daemon_bit<0) return 0; // update once, exit
/// Main loop
int i;
thatTime=now;
thatFrame=GLOBALPARS(G_THIS_FRAME);
// sleep one frame or until enabled
lseek(fd_fparmsall, LSEEK_FRAME_WAIT_REL+1, SEEK_END); /// skip 1 frame before returning (wait up to 255 frames with such command)
while (1) {
MDF6(fprintf(stderr,"Waiting for temperature daemon to be enabled, frame=%ld\n",GLOBALPARS(G_THIS_FRAME)));
lseek(fd_fparmsall, LSEEK_DAEMON_FRAME+daemon_bit, SEEK_END); /// wait for temperature daemon to be enabled (let it sleep if not)
now=getNowTime();
MDF3(fprintf(stderr,"Now is %d ms. due is %d ms \n",(int)((now/((long long)1000)) & 0x7fffffff),(int)((due_time/((long long)1000)) & 0x7fffffff)));
thisFrame=GLOBALPARS(G_THIS_FRAME);
if (now>=due_time){
MDF3(fprintf(stderr," It is due!\n"));
int numMeasured=0;
// update all temperatures that are already due;
for (i=0;i<5;i++) if ((slaves[i]>0) && (due_times[i]<due_time)){ // first service those that are due
int temperature=readTemperature(i);
if (temperature>=0) tempData[tempIndices[i]]=temperature; // >=0 is not >=0C :-)
due_times[i]=now+period_us;
MDF3(fprintf(stderr,"Due time %d is %d ms\n",i, (int)((due_times[i]/((long long)1000)) & 0x7fffffff)));
numMeasured++;
}
MDF3(fprintf(stderr,"--- numMeasured=%d\n",numMeasured));
if (numMeasured==0) { // none was due, measure the soonest to become due
indx=-1;
for (i=0;i<5;i++) if ((slaves[i]>0) && ((indx<0) || (due_times[i]<due_times[indx]))) indx=i;
if (indx<0){
fprintf(stderr,"BUG: earliest due indx<0");
return -1;
}
int temperature=readTemperature(indx);
if (temperature>=0) tempData[tempIndices[indx]]=temperature; // >=0 is not >=0C :-)
due_times[indx]=now+period_us;
MDF3(fprintf(stderr,"Updated earliest - due time %d is %d ms\n",indx, (int)((due_times[indx]/((long long)1000)) & 0x7fffffff)));
}
due_time=now+ individual_period_us;
MDF3(fprintf(stderr,"Due time is %d ms\n", (int)((due_time/((long long) 1000)) & 0x7fffffff)));
for (i=0;i<5;i++) if ((slaves[i]>0) && (due_times[i]<due_time)) due_time=due_times[i];
MDF3(fprintf(stderr,"Due time updated is %d ms\n", (int)((due_time/((long long)1000)) & 0x7fffffff)));
}
// set due time as earliest of individual due times and now+ individual_period_us
MDF3(fprintf(stderr,"Wait till next measurement for %d milliseconds\n",(int) ((due_time-now)/((long long)1000))));
// guess how many frames to wait
int framePeriod=(now-thatTime)/(thisFrame-thatFrame);
int numSkip=(due_time-now)/framePeriod;
if (numSkip>255) numSkip=255;
if (numSkip<1) numSkip=1;
MDF3(fprintf(stderr,"Will skip %d frames\n",numSkip));
if (numSkip>0) lseek(fd_fparmsall, LSEEK_FRAME_WAIT_REL+numSkip, SEEK_END); /// skip 1 frame before returning (wait up to 255 frames with such command)
}
}
long long getNowTime(void){
lseek(fd_fparmsall, LSEEK_GET_FPGA_TIME, SEEK_END); /// get FPGA time
long long result=GLOBALPARS(G_SECONDS);
result*=1000000;
result+=GLOBALPARS(G_MICROSECONDS);
MDF4(fprintf(stderr,"getNowTime(): %ld.%06ld, result=%d, == %d ms\n",GLOBALPARS(G_SECONDS),GLOBALPARS(G_MICROSECONDS), (int) (result & 0x7fffffff), (int) ((result/((long long) 1000)) & 0x7fffffff)));
return result;
}
int readTemperature(int indx){
MDF2(fprintf(stderr, "Measuring temperature data for index=%d, frame # %ld, slaves[index]=%d\n",indx,GLOBALPARS(G_THIS_FRAME),slaves[indx]));
int result=-1;
int devfd,ctlfd;
unsigned char data8[2];
// unsigned short *data16= (short *) data8;
if (slaves[indx]<0) {MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -1;}
// int err;
if (indx==0) {
devfd=open("/dev/xi2c8_aux", O_RDONLY);
if (devfd<0) return -1;
if (lseek(devfd,(slaves[indx]<<7)+(SA56004X_LTM),0)<0) { // 0x4800, byte mode
close (devfd);
return -1;
}
if (read(devfd,&data8[1],1)<1) {
close (devfd);
return -1;
}
if (lseek(devfd,(slaves[indx]<<7)+(SA56004X_LTL),0)<0) { // 0x4822
close (devfd);
return -1;
}
if (read(devfd,&data8[0],1)<1) {
close (devfd);
return -1;
}
result=((data8[1]<<4 ) | (data8[0]>>4)) & 0xfff;
// MDF2(fprintf(stderr, "data8[0]=0x%x, data8[1]=0x%x, result=0x%04x\n",data8[0],data8[1],result));
if (result & 0x800) {
result&=0x7ff;
result |=0x1000;
}
} else { // bus 0 - need to slow down first
ctlfd=open("/dev/xi2cctl", O_RDWR);
/**
commented out so the communication speed will always be restored to fast (for the sensors)
read(ctlfd,bus0dflt,6); // read and save old i2c bus0 timing parameters
lseek(ctlfd,0,SEEK_SET); // rewind
*/
write(ctlfd,bus0slow,6); // set slow i2c bus0 timing parameters
devfd=open("/dev/xi2c16", O_RDONLY);
if (devfd<0) return -1;
if (lseek(devfd,((slaves[indx]<<7) +(MCP98242_LT))<<1,0)<0) { // 16-bit mode, 2 bytes/register
close (devfd);
// restore fast speed
lseek(ctlfd,0,SEEK_SET); // rewind
write(ctlfd,bus0dflt,6); // set slow i2c bus0 timing parameters // BUG: for some reason write returns here-1 after successful write
close (ctlfd);
return -1;
}
if (read(devfd,data8,2) <2) {
close (ctlfd);
// restore fast speed
lseek(ctlfd,0,SEEK_SET); // rewind
write(ctlfd,bus0dflt,6); // set slow i2c bus0 timing parameters
close (ctlfd);
return -1;
} // read and save old i2c bus0 timing parameters
//swap bytes
result =((data8[0]<<8) | data8[1])&0x1fff; // sign+temperature as 8.4
// restore i2c bus 0 speed
lseek(ctlfd,0,SEEK_SET); // rewind
write(ctlfd,bus0dflt,6); // set slow i2c bus0 timing parameters
close (ctlfd);
}
close (devfd);
MDF1(fprintf(stderr,"Temperature data for index=%d is 0x%x, frame # %ld\n",indx, result, GLOBALPARS(G_THIS_FRAME)));
return result;
/*
if (ctlfd<0) {
MDF2(fprintf(stderr, "Measuring temperature failed\n"));
return -1;
}
if (read(ctlfd,bus0dflt,6) <6) {close (ctlfd); MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -2;} // read and save old i2c bus0 timing parameters
if (lseek(ctlfd,0,SEEK_SET)<0) {close (ctlfd); MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -2;} // rewind
close (ctlfd);
ctlfd=open("/dev/xi2cctl", O_RDWR);
// if ((err=write(ctlfd,bus0slow,6))<6) {close (ctlfd); MDF2(fprintf(stderr, "Measuring temperature failed, err=%d\n",err)); return -2;} // set slow i2c bus0 timing parameters
if ((err=write(ctlfd,bus0slow,6))<-6) {close (ctlfd); MDF2(fprintf(stderr, "Measuring temperature failed, err=%d\n",err)); return -2;} // set slow i2c bus0 timing parameters
devfd=open("/dev/xi2c16", O_RDONLY);
if (devfd<0) {MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -1;}
if (lseek(devfd,((slaves[indx]<<7) +(MCP98242_LT))<<1,0)<0) { // 16-but mode, 2 bytes/register
close (devfd);
MDF2(fprintf(stderr, "Measuring temperature failed\n"));
return -1;
}
if (read(devfd,data16,2) <2) {close (ctlfd); MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -1;} // read and save old i2c bus0 timing parameters
result =data16[0]&0x1fff; // sign+temperature as 8.4
// restore i2c bus 0 speed
if (lseek(ctlfd,0,SEEK_SET)<0) {close (ctlfd);close (devfd); MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -2;} // rewind
if (write(ctlfd,bus0dflt,6)<-6) {close (ctlfd);close (devfd); MDF2(fprintf(stderr, "Measuring temperature failed\n")); return -2;} // set slow i2c bus0 timing parameters
close (ctlfd);
}
close (devfd);
MDF2(fprintf(stderr,"Temperature data for index=%d is 0x%x, frame # %ld\n",indx, result, GLOBALPARS(G_THIS_FRAME)));
return result;
*/
}
int setResolution(int indx){
MDF2(fprintf(stderr, "Setting full temperature resolution for index=%d, frame # %ld, slaves[index]=%d\n",indx,GLOBALPARS(G_THIS_FRAME),slaves[indx]));
int devfd,ctlfd;
unsigned char data8[2];
if (indx<1) return 0; // no resolution settings fro system temperature, only for SFE
ctlfd=open("/dev/xi2cctl", O_RDWR);
/**
commented out so the communication speed will always be restored to fast (for the sensors)
read(ctlfd,bus0dflt,6); // read and save old i2c bus0 timing parameters
lseek(ctlfd,0,SEEK_SET); // rewind
*/
write(ctlfd,bus0slow,6); // set slow i2c bus0 timing parameters
devfd=open("/dev/xi2c8", O_RDWR);
if (devfd<0) return -1;
if (lseek(devfd,(slaves[indx]<<7) +(MCP98242_RESOL),0)<0) { // 8-bit mode
close (devfd);
// restore fast speed
lseek(ctlfd,0,SEEK_SET); // rewind
write(ctlfd,bus0dflt,6); // set slow i2c bus0 timing parameters // BUG: for some reason write returns here-1 after successful write
close (ctlfd);
return -1;
}
data8[0]=3; // full resolution
write(devfd,data8,1);
// restore i2c bus 0 speed
lseek(ctlfd,0,SEEK_SET); // rewind
write(ctlfd,bus0dflt,6); // set slow i2c bus0 timing parameters
close (ctlfd);
close (devfd);
MDF1(fprintf(stderr,"Temperature sensor %d is set to maximal resolution\n",indx));
return 0;
}
/**
* @brief open required files, mmap theurt data structures
* uses global variables for files and mmap-ed data so they are accessible everywhere
* @return 0 - OK, <0 - problems opening/mma-ing
*/
int initFrameParsMmap(void) {
const char framepars_driver_name[]="/dev/frameparsall";
///Frame parameters file open/mmap (read/write)
fd_fparmsall= open(framepars_driver_name, O_RDWR);
if (fd_fparmsall <0) {
ELP_FERR(fprintf(stderr, "Open failed: (%s)\r\n", framepars_driver_name));
return -1;
}
frameParsAll = (struct framepars_all_t *) mmap(0, sizeof (struct framepars_all_t) * HISTOGRAM_CACHE_NUMBER , PROT_READ | PROT_WRITE, MAP_SHARED, fd_fparmsall, 0);
if((int) frameParsAll == -1) {
ELP_FERR(fprintf(stderr, "problems with mmap: %s\n", framepars_driver_name));
close (fd_fparmsall);
return -1;
}
framePars = frameParsAll->framePars;
// pastPars = frameParsAll->pastPars;
globalPars= frameParsAll->globalPars;
return 0; /// All initialized
}
src/temperature.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : temperature.h
*! DESCRIPTION:
*! Copyright (C) 2012 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: temperature.h,v $
*! Revision 1.1 2012/04/08 04:10:36 elphel
*! rev. 8.2.2 - added temperature measuring daemon, related parameters for logging SFE and system temperatures
*!
*/
#ifndef __H_TEMPERATURE__
#define __H_TEMPERATURE__
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
//#include <ctype.h>
//#include <getopt.h>
#include <time.h>
#include <string.h>
#include <syslog.h>
#include <netinet/in.h>
#include <sys/mman.h> /* mmap */
#include <sys/ioctl.h>
#include <asm/elphel/c313a.h>
//#include <asm/elphel/exifa.h>
#include <asm/byteorder.h>
//#if ELPHEL_DEBUG
#define THIS_DEBUG 1
//#else
// #define THIS_DEBUG 0
//#endif
//#define ELP_FERR(x) printf(stderr,"%s:%d:%s: ERROR ",__FILE__,__LINE__,__FUNCTION__); x
#if THIS_DEBUG
#define MDF0(x) { if (temperature_debug & (1 << 0)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF1(x) { if (temperature_debug & (1 << 1)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF2(x) { if (temperature_debug & (1 << 2)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
// #define MDF2(x)
#define MDF3(x) { if (temperature_debug & (1 << 3)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
// #define MDF3(x)
#define MDF4(x) { if (temperature_debug & (1 << 4)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF5(x) { if (temperature_debug & (1 << 5)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF6(x) { if (temperature_debug & (1 << 6)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#define MDF7(x) { if (temperature_debug & (1 << 7)) {fprintf(stderr,"%s:%d:%s: ",__FILE__,__LINE__,__FUNCTION__);x;} }
#else
#define MDF0(x)
#define MDF1(x)
#define MDF2(x)
#define MDF3(x)
#define MDF4(x)
#define MDF5(x)
#define MDF6(x)
#define MDF7(x)
#endif
#define get_imageParamsThis(x) ( framePars[this_frame & PARS_FRAMES_MASK].pars[x])
#define min(x,y) ((x<y)?x:y)
#endif
src/white_balance.c 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : white_balance.c
*! DESCRIPTION: White balance part of the autoexposure/white balance/hdr daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: white_balance.c,v $
*! Revision 1.6 2008/12/10 02:12:54 elphel
*! Added threshold with no-correction zone, similar to autoexposure.
*! Individual, per-color integration: whenintegrated error is less than half threshold - no correction will take place,, from 0.5 to 1.5 threshold - correction will be scaled, above 1.5 - full correction applied.
*! In the case correction is scaled, only portion of integrated error is removed after correction. If full correction applied - integrated error is reset.
*!
*! Revision 1.5 2008/12/02 19:12:13 elphel
*! made it check that there is enough pixels to work with (before it got 0 if daemon started to early on all colors but one were zeroed out)
*!
*! Revision 1.4 2008/12/02 00:28:13 elphel
*! multiple bugfixes, making white balance to work and work with camvc
*!
*! Revision 1.3 2008/12/01 02:32:48 elphel
*! Updated white balance to use new gains
*!
*! Revision 1.2 2008/11/30 05:34:12 elphel
*! Updated for WB_EN/WB_MASK split (still not updated for the new gain control - not operational)
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.5 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.4 2008/11/18 07:36:55 elphel
*! added TODO
*!
*! Revision 1.3 2008/11/17 06:49:48 elphel
*! synchronized greens analog gains when color HDR is not used
*!
*! Revision 1.2 2008/11/16 17:35:06 elphel
*! improved control of analog gains
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#include "autoexposure.h"
void initWhiteBalanceCorr(void) {
GLOBALPARS(G_NEXT_WB_FRAME)=0;
}
#define MIN_LEVEL_TO_ADJUST 0x1000 /// 1/16 of the full scale
#define MIN_PIXELS_TO_ADJUST 0x100 /// one 32x32 block, 1 color
/**
* @brief Single white balance correction step (through scaling "gamma" curves).
* white balance parameters are used for the target fram, not for the currenly processed
* @param frame "current" frame, histograms are ready for frame-1
* @param target_frame frame, to which new exposure should be applied (that frame picture will change brightness)
* caller should take care of not bumping into HDR frame
* @return <0 - error, 0 - no correction was made, 1 - correction to [P_VEXPOS] was made
*/
/// TODO: at startup or long pause, set wb after aexp settles to within thershold
/// TODO: SupportT P_WB_MASK - now it is just ON/OFF. NOTE:When the bit is off it should be scaled with the G1 color!
int whiteBalanceCorr(int frame, int target_frame, int ae_rslt) {
MDF3(fprintf(stderr,"frame=0x%x, target_frame=0x%x G_WB_INTEGERR=0x%08lx\n",frame,target_frame,GLOBALPARS(G_WB_INTEGERR))); ///======= 0 here
int rslt;
int colors;
unsigned long write_data[18];
/// int gamma_index; - global
/// int hist_index; - global
/// int error_thresh;
int color;
int wb_whitelev,wb_whitefrac,wb_whitepix, wb_whiteindex,wb_maxwhite;
int brightest_color=-1; /// brightest one of the enabled colors (including COLOR_Y_NUMBER)
int max_white_pixels; /// maximal (among colors) number of "white" (>wb_whitelev) pixels
int min_white_pixels; ///to detect overexposure for all colors
int num_pixels,white_pixels,nonwhite_frac,nonwhite_pixels;
int perc,delta,perc_frac;
unsigned long * hist_cumul; /// 256 of cumulated histogram values (in pixels) for selected color
unsigned char * hist_percentile; /// 256 of rounded percentiles (1 byte) - used as a starting point for linear interpolation
int levels[4]; /// 16-bit levels for "white" for different colors (output levels),
int corr[4]; /// 16.16 additional manual color correction coefficients
int gains[4]; /// full gain (analog+digital) per channel
int new_gains[4];
int target_frame8=target_frame & PARS_FRAMES_MASK;
int i;
int error_thresh= framePars[target_frame8].pars[P_WB_THRESH];/// Threshold for integrated error - when errors are smaller - correction is scaled proportionally
int wb_period_change= framePars[target_frame8].pars[P_WB_PERIOD] & 0xff; /// lower byte
int wb_period_nochange=(framePars[target_frame8].pars[P_WB_PERIOD] >> 8 ) & 0xff; /// next byte
int wb_dont_sync= (framePars[target_frame8].pars[P_WB_PERIOD] & 0x10000); /// don't try to synchronize to availble histograms
int aerr=0; // just to keep compiler happy
// int * wb_err= (int *) &(GLOBALPARS(G_WB_INTEGERR)); /// so it will be signed
static int wb_err[4]; /// individual per-color. Maybe make visible outside? Or not?
if (!wb_period_change) wb_period_change= DEFAULT_WB_PERIOD_CHANGE;
if (!wb_period_nochange) wb_period_nochange=DEFAULT_WB_PERIOD_NOCHANGE;
if (!((colors=framePars[target_frame8].pars[P_WB_CTRL] & 0x0f)) || !(framePars[target_frame8].pars[P_WB_CTRL] & (1<<WB_CTRL_BIT_EN))) {
GLOBALPARS(G_NEXT_WB_FRAME)=frame+wb_period_change;
return 0; /// white balance is off (mask==0)
}
if (GLOBALPARS(G_NEXT_WB_FRAME) > frame) return 0; /// too early to bother
MDF3(fprintf(stderr,"G_WB_INTEGERR=0x%08lx\n",GLOBALPARS(G_WB_INTEGERR))); ///======= 0 here
colors |= (1 << COLOR_Y_NUMBER);
/// Get the histogram (including percentiles)
lseek(fd_histogram_cache, LSEEK_HIST_WAIT_C, SEEK_END); /// wait for all histograms, not just Y (G1)
lseek(fd_histogram_cache, LSEEK_HIST_NEEDED + (colors << 8), SEEK_END); /// specify that reverse histogram(s) are needed. Are they?
hist_index=lseek(fd_histogram_cache, frame-1, SEEK_SET); /// request histograms for the previous frame
if(hist_index <0) {
ELP_FERR(fprintf(stderr, "Requested histograms for frame %d (0x%x) are not available\n",frame-1,frame-1));
return -1;
}
if (histogram_cache[hist_index].frame < (frame-1)) { /// histogram is too old - try again
GLOBALPARS(G_NEXT_WB_FRAME)=frame+1;
if (wb_dont_sync) return 0; /// will request histogram for this frame
/// repeat up to 8 times trying to get a fresh histogram
for (i=0; i<8; i++) {
frame++;
MDF3(fprintf(stderr,"Skipping frame trying to synchronize, frame will be 0x%x\n",frame));
lseek(fd_fparmsall, frame +LSEEK_FRAME_WAIT_ABS, SEEK_END);
this_frame=frame;
hist_index=lseek(fd_histogram_cache, frame-1, SEEK_SET); /// request histograms for the previous frame
if (histogram_cache[hist_index].frame == (frame-1)) break;
}
if (histogram_cache[hist_index].frame < (frame-1)) { /// histogram is too old - try again
GLOBALPARS(G_NEXT_WB_FRAME)=frame+1;
return 0; /// will request histogram for this frame
}
}
wb_whitelev=framePars[target_frame8].pars[P_WB_WHITELEV];
wb_whitefrac=framePars[target_frame8].pars[P_WB_WHITEFRAC];
wb_maxwhite=framePars[target_frame8].pars[P_WB_MAXWHITE];
if (!wb_whitelev || (wb_whitelev > 0xffff)) wb_whitelev =DEFAULT_WB_WHITELEV; /// 0xfae1 // 98%
if (!wb_whitefrac || (wb_whitefrac > 0xffff)) wb_whitefrac=DEFAULT_WB_WHITEFRAC; /// 0x028f // 1%
if (!wb_maxwhite || (wb_maxwhite > 0xffff)) wb_maxwhite= wb_whitefrac<<2; /// 48
MDF4(fprintf(stderr,"colors=0x%x wb_whitelev=0x%x, wb_whitefrac=0x%x\n",colors,wb_whitelev,wb_whitefrac));
corr[COLOR_RED]= framePars[target_frame8].pars[P_WB_SCALE_R];
corr[COLOR_GREEN1]=0x10000;
corr[COLOR_GREEN2]=framePars[target_frame8].pars[P_WB_SCALE_GB];
corr[COLOR_BLUE]= framePars[target_frame8].pars[P_WB_SCALE_B];
for (color=0;color<4;color++) if (!corr[color]) corr[color]=0x10000;
MDF4(fprintf(stderr,"corr[]= 0x%04x 0x%04x 0x%04x 0x%04x\n",corr[0],corr[1],corr[2],corr[3]));
/// Find the "brightest" color (maximal number of pixels above wb_whitelev ). wb_whitelev is currently rounded to 8 bits
max_white_pixels=0;
num_pixels=histogram_cache[hist_index].cumul_hist[255+ (COLOR_Y_NUMBER<<8)]; /// this one is definitely calculated
if (num_pixels < MIN_PIXELS_TO_ADJUST) {
ELP_FERR(fprintf(stderr, "Few pixels to process, giving up. num_pixels=%d, frame=%d (0x%x)\n", num_pixels, frame,frame));
return -1;
}
min_white_pixels=num_pixels;
wb_whitepix= (((long long) num_pixels) * wb_whitefrac)>>16;
wb_whiteindex=(wb_whitelev>>8) & 0xff;
wb_maxwhite =(((long long) num_pixels) * wb_maxwhite)>>16;
MDF4(fprintf(stderr,"num_pixels=0x%04x wb_whitepix=0x%04x wb_whiteindex=0x%04x\n",num_pixels,wb_whitepix,wb_whiteindex));
/// Find the "brightest" color (maximal number of pixels above wb_whitelev ). wb_whitelev is currently rounded to 8 bits
for (color=0;color<4;color++) if (colors & (1 << color)) {
hist_cumul= &(histogram_cache[hist_index].cumul_hist[(color << 8)]);
if ( ((white_pixels= (num_pixels-hist_cumul[wb_whiteindex])))> max_white_pixels) {
max_white_pixels=white_pixels;
brightest_color=color;
}
if (min_white_pixels> white_pixels) min_white_pixels = white_pixels;
}
MDF4(fprintf(stderr,"brightest_color=%d, max_white_pixels= 0x%x, min_white_pixels=0x%x wb_whiteindex=0x%x, wb_maxwhite=0x%x\n", brightest_color, max_white_pixels, min_white_pixels, wb_whiteindex,wb_maxwhite));
///#define P_WB_MAXWHITE 175 /// Maximal allowed "white" pixels fraction (16.16) to have level above [P_WB_WHITELEV] for the darkest color
/// if this limit is exceeded there will be no correction (waiting for autoexposure to decrease overall brightness)
if (min_white_pixels > wb_maxwhite) { /// everexposure - wait for the next chance
MDF4(fprintf(stderr,"Overexposure - giving up: min_white_pixels=0x%x wb_maxwhite=0x%x\n",min_white_pixels, wb_maxwhite));
return 0; /// wait for the next frame (skip normal interval here?)
}
while (max_white_pixels < wb_whitepix) { /// No, wb_whitelev has to be lowered and brightest color is unknown (maybe max_white_pixels==0)
for (brightest_color=0;brightest_color<4;brightest_color++) if (colors & (1 << brightest_color)) {
if ( ((max_white_pixels= (num_pixels-histogram_cache[hist_index].cumul_hist[(brightest_color << 8) +wb_whiteindex])))>=wb_whitepix) break;
}
wb_whiteindex--;
}
MDF4(fprintf(stderr,"brightest_color=%d, max_white_pixels= 0x%04x, wb_whiteindex=0x%x\n",brightest_color,max_white_pixels,wb_whiteindex));
hist_cumul=&(histogram_cache[hist_index].cumul_hist[brightest_color << 8]);
/// See if enough pixels are above wb_whitelev
if (max_white_pixels < wb_whitepix) { /// No, wb_whitelev has to be lowered
while (wb_whiteindex && (hist_cumul[wb_whiteindex] > (num_pixels-wb_whitepix))) wb_whiteindex--;
}
wb_whitelev=wb_whiteindex<<8;
/// Find levels for other (than brightest) colors so the same number of pixels is below it. First - output range, then correct by gamma-tables to input range
nonwhite_pixels=hist_cumul[wb_whiteindex]; /// number of non-white (less than level) pixels for the brightest color
if (nonwhite_pixels<0) nonwhite_pixels=0; /// still bad
nonwhite_frac= (((long long) nonwhite_pixels)<<16)/num_pixels;
white_pixels=num_pixels-nonwhite_pixels;
levels[brightest_color]=wb_whitelev;
MDF4(fprintf(stderr,"wb_whitelev=0x%x white_pixels=0x%04x, nonwhite_pixels=0x%04x, nonwhite_frac= 0x%04x\n",wb_whitelev, white_pixels,nonwhite_pixels,nonwhite_frac));
for (color=0;color<4;color++) if (colors & (1 << color)) {
if (color != brightest_color){
/// nonwhite_frac-> levels[color]
hist_cumul= &(histogram_cache[hist_index].cumul_hist[color<<8]);
hist_percentile=&(histogram_cache[hist_index].percentile[color<<8]);
perc=hist_percentile[nonwhite_frac >> (PERCENTILE_SHIFT-8)]; /// 8 MSBs used as index
MDF4(fprintf(stderr,"perc=0x%04x nonwhite_frac >> (PERCENTILE_SHIFT-8)= 0x%04x\n",perc, nonwhite_frac >> (PERCENTILE_SHIFT-8)));
if (perc>0) perc--; /// seems hist_percentile[perc] rounds up, not down
while ((perc>0) && (hist_cumul[perc] > nonwhite_pixels)) perc--; /// adjust down (is that needed at all?)
perc++;
while ((perc<255) && (hist_cumul[perc] <= nonwhite_pixels)) perc++; /// adjust up (is that needed at all?)
perc--;
delta=hist_cumul[perc+1] - hist_cumul[perc];
MDF4(fprintf(stderr,"perc=0x%04x delta= 0x%04x\n",perc, delta));
if (delta) {
perc_frac=((nonwhite_pixels-hist_cumul[perc]) << (PERCENTILE_SHIFT-8))/delta;
} else perc_frac=0;
levels[color]=(perc << (PERCENTILE_SHIFT-8)) + perc_frac;
MDF4(fprintf(stderr,"hist_cumul[0x%x]=0x%lx hist_cumul[0x%x]=0x%lx, delta=0x%x, levels[%d]=0x%x\n",perc,hist_cumul[perc],perc+1,hist_cumul[perc+1],delta,color,levels[color]));
}
/// Now - "ungamma" levels to map them to the sensor input data
/// sets global gamma_index, uses global hist_index;
if (!setGammaIndex(color)) return -1; /// could not get gamma table
levels[color]= gammaReverse (levels[color]) - get_imageParamsThat (P_SCALE_ZERO_OUT, frame-1); /// Could use "this", not "that" - unlikely to change
gains[color] = histogram_cache[hist_index].gains[color&3];
new_gains[color] =gains[color];
// MDF4(fprintf(stderr,"levels[%d]=0x%x\n",color,levels[color]));
}
MDF4(fprintf(stderr,"levels[0]=0x%x levels[1]=0x%x levels[2]=0x%x levels[3]=0x%x\n",levels[0],levels[1],levels[2],levels[3]));
MDF4(fprintf(stderr,"gains[0]=0x%x gains[1]=0x%x gains[2]=0x%x gains[3]=0x%x\n",gains[0],gains[1],gains[2],gains[3]));
/// Now levels are (0..0xffff)-fatzero (so can be negative?) and the gains should be calculated for R,G2,B - don't touch G here
///corr[0]
if (levels[COLOR_Y_NUMBER] < MIN_LEVEL_TO_ADJUST) { /// green level is too low to adjust
// return -1; /// give up?
levels[COLOR_Y_NUMBER]= MIN_LEVEL_TO_ADJUST; /// still try
}
// int target_frame8=target_frame & PARS_FRAMES_MASK;
// int ae_period_change=framePars[target_frame8].pars[P_AE_PERIOD] & 0xff; /// lower byte
/// It is important to use the new value of Green gain - it (an all the rest gains) could change if application had written
/// green gain and driver adjusted the rest of them. It would be safer to recalculate all the gains from the taget frame green gain
/// and then write all in one atomic write, including the same green. That writing green back will help in the cases when write
/// occured after we read green gain but before had written back. So we are risking missing the gain chnage, otherwise we'll have
/// the gains mismatch. But tghat can be chnaged by define
#define BETTER_MISS_GAIN_CHANGE 1
for (color=0;color<4;color++) if ((colors & (1 << color)) && (color != COLOR_Y_NUMBER)) {
/// gain[i]=gain[i]*level[green]/level[i]*corr[i]>>16
if (levels[color]<MIN_LEVEL_TO_ADJUST) levels[color] =MIN_LEVEL_TO_ADJUST;
new_gains[color]= (((long long) gains[color]) * levels[COLOR_Y_NUMBER] / levels[color] * corr[color]) >> 16;
///per-color damping is here
if (error_thresh>0) { /// if threshold ==0 - just apply what is calculated
wb_err[color]+=(new_gains[color]>>4); /// Too high precision - scale to have reasonable threshold ~500, same as for the autoexposure
wb_err[color]-=(gains[color]>>4);
aerr=abs(wb_err[color])- (error_thresh >> 1); /// TRYING: <1/2 of error_thresh - no correction at all, (0.5..1.5)*error_thresh - scale
if (aerr>0) {
if (aerr > error_thresh) aerr=error_thresh;
new_gains[color]=(gains[color]*(error_thresh-aerr)+new_gains[color]*aerr)/error_thresh;
if (aerr < error_thresh) wb_err[color]= (wb_err[color]*(error_thresh-aerr))/error_thresh; /// reduce residual error
else wb_err[color]= 0; /// reset residual error (save on division)
} else new_gains[color]=gains[color];
}
}
MDF5(fprintf(stderr,"wb_err[0]=%d, wb_err[1]=%d, wb_err[2]=%d, wb_err[3]=%d\n",wb_err[0],wb_err[1],wb_err[2],wb_err[3]));
MDF5(fprintf(stderr,"new_gains[0]=0x%x new_gains[1]=0x%x new_gains[2]=0x%x new_gains[3]=0x%x\n",new_gains[0],new_gains[1],new_gains[2],new_gains[3]));
unsigned long targetGain=framePars[target_frame & PARS_FRAMES_MASK].pars[P_GAINR+COLOR_Y_NUMBER];
if (targetGain!=gains[COLOR_Y_NUMBER]) { /// need to correct gains to the green gain at target frame modified by externally
for (color=0;color<4;color++) if ((colors & (1 << color)) && (color != COLOR_Y_NUMBER)) {
/// gain[i]*=targetGain/gain[COLOR_Y_NUMBER]
/// could take division out of cycle, but that's not that often to get here
new_gains[color]= (((long long) new_gains[color]) * targetGain)/ gains[COLOR_Y_NUMBER];
}
new_gains[COLOR_Y_NUMBER]=targetGain;
MDF4(fprintf(stderr,"Corrected for green gain changed: new_gains[0]=0x%x new_gains[1]=0x%x new_gains[2]=0x%x new_gains[3]=0x%x\n",new_gains[0],new_gains[1],new_gains[2],new_gains[3]));
}
/// Now apply modified scales
i=0;
write_data[i++]= FRAMEPARS_SETFRAME;
write_data[i++]= target_frame;
for (color=0;color<4;color++) if ((colors & (1 << color)) && (BETTER_MISS_GAIN_CHANGE ||(color != COLOR_Y_NUMBER))){
write_data[i++]= P_GAINR+color;
write_data[i++]= new_gains[color];
}
rslt=write(fd_fparmsall, write_data, (i << 2));
if (rslt < (i << 2)) return -errno;
GLOBALPARS(G_NEXT_WB_FRAME)=frame+framePars[target_frame8].pars[P_WB_PERIOD]; /// modify overall next_frame
return 1;
/// TODO: add error integration, don't rush for instant changes?
}
src/white_balance.h 0 → 100644
View file @ 99b601c4
/*!***************************************************************************
*! FILE NAME : white_balance.h
*! DESCRIPTION: White balance part of the autoexposure/white balance/hdr daemon
*! Copyright (C) 2008 Elphel, Inc.
*! -----------------------------------------------------------------------------**
*! 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 3 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, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*!
*! $Log: white_balance.h,v $
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/11/18 19:30:16 elphel
*! Added initialization of the "next" frame - otherwise it wait _very_ long if the camera frame number is reset
*!
*! Revision 1.1 2008/11/15 23:08:24 elphel
*! 8.0.alpha17 - split autoexposure source file
*!
*!
*/
#ifndef __H_AUTOEXPOSURE_WHITE_BALANCE__
#define __H_AUTOEXPOSURE_WHITE_BALANCE__
int whiteBalanceCorr(int frame, int target_frame, int ae_rslt);
void initWhiteBalanceCorr(void);
#endif
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment