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feat(clusterApp):BringUp OpenGlES+DRM on RK3576

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zhimin.liu
2026-04-28 21:30:18 +08:00
parent f3f5d1b00b
commit d5b56baefc
213 changed files with 136403 additions and 678 deletions
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194
packages/install/usr/share/aclocal/freetype2.m4 Normal file
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# Configure paths for FreeType2
# Marcelo Magallon 2001-10-26, based on `gtk.m4` by Owen Taylor
#
# Copyright (C) 2001-2023 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
# and distributed under the terms of the FreeType project license,
# LICENSE.TXT. By continuing to use, modify, or distribute this file you
# indicate that you have read the license and understand and accept it
# fully.
#
# As a special exception to the FreeType project license, this file may be
# distributed as part of a program that contains a configuration script
# generated by Autoconf, under the same distribution terms as the rest of
# that program.
#
# serial 7
# AC_CHECK_FT2([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
# Test for FreeType 2, and define FT2_CFLAGS and FT2_LIBS.
# MINIMUM-VERSION is what libtool reports; the default is '7.0.1' (this is
# FreeType 2.0.4).
#
# To make this code work with older autoconf versions, `AS_HELP_STRING` is
# not quoted.
#
AC_DEFUN([AC_CHECK_FT2],
[# Get the cflags and libraries from the freetype-config script
#
AC_ARG_WITH([ft-prefix],
AS_HELP_STRING([--with-ft-prefix=PREFIX],
[Prefix where FreeType is installed (optional)]),
[ft_config_prefix="$withval"],
[ft_config_prefix=""])
AC_ARG_WITH([ft-exec-prefix],
AS_HELP_STRING([--with-ft-exec-prefix=PREFIX],
[Exec prefix where FreeType is installed (optional)]),
[ft_config_exec_prefix="$withval"],
[ft_config_exec_prefix=""])
AC_ARG_ENABLE([freetypetest],
AS_HELP_STRING([--disable-freetypetest],
[Do not try to compile and run a test FreeType program]),
[],
[enable_fttest=yes])
if test x$ft_config_exec_prefix != x ; then
ft_config_args="$ft_config_args --exec-prefix=$ft_config_exec_prefix"
if test x${FT2_CONFIG+set} != xset ; then
FT2_CONFIG=$ft_config_exec_prefix/bin/freetype-config
fi
fi
if test x$ft_config_prefix != x ; then
ft_config_args="$ft_config_args --prefix=$ft_config_prefix"
if test x${FT2_CONFIG+set} != xset ; then
FT2_CONFIG=$ft_config_prefix/bin/freetype-config
fi
fi
if test "x$FT2_CONFIG" = x ; then
AC_PATH_TOOL([FT2_CONFIG], [freetype-config], [no])
fi
min_ft_version=m4_if([$1], [], [7.0.1], [$1])
AC_MSG_CHECKING([for FreeType -- version >= $min_ft_version])
no_ft=""
if test "$FT2_CONFIG" = "no" ; then
no_ft=yes
else
FT2_CFLAGS=`$FT2_CONFIG $ft_config_args --cflags`
FT2_LIBS=`$FT2_CONFIG $ft_config_args --libs`
ft_config_major_version=`$FT2_CONFIG $ft_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
ft_config_minor_version=`$FT2_CONFIG $ft_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
ft_config_micro_version=`$FT2_CONFIG $ft_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
ft_min_major_version=`echo $min_ft_version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
ft_min_minor_version=`echo $min_ft_version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
ft_min_micro_version=`echo $min_ft_version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
if test x$enable_fttest = xyes ; then
ft_config_is_lt=""
if test $ft_config_major_version -lt $ft_min_major_version ; then
ft_config_is_lt=yes
else
if test $ft_config_major_version -eq $ft_min_major_version ; then
if test $ft_config_minor_version -lt $ft_min_minor_version ; then
ft_config_is_lt=yes
else
if test $ft_config_minor_version -eq $ft_min_minor_version ; then
if test $ft_config_micro_version -lt $ft_min_micro_version ; then
ft_config_is_lt=yes
fi
fi
fi
fi
fi
if test x$ft_config_is_lt = xyes ; then
no_ft=yes
else
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $FT2_CFLAGS"
LIBS="$FT2_LIBS $LIBS"
#
# Sanity checks for the results of freetype-config to some extent.
#
AC_RUN_IFELSE([
AC_LANG_SOURCE([[
#include <ft2build.h>
#include <freetype/freetype.h>
#include <stdio.h>
#include <stdlib.h>
int
main(void)
{
FT_Library library;
FT_Error error;
error = FT_Init_FreeType(&library);
if (error)
return 1;
else
{
FT_Done_FreeType(library);
return 0;
}
}
]])
],
[],
[no_ft=yes],
[echo $ECHO_N "cross compiling; assuming OK... $ECHO_C"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi # test $ft_config_version -lt $ft_min_version
fi # test x$enable_fttest = xyes
fi # test "$FT2_CONFIG" = "no"
if test x$no_ft = x ; then
AC_MSG_RESULT([yes])
m4_if([$2], [], [:], [$2])
else
AC_MSG_RESULT([no])
if test "$FT2_CONFIG" = "no" ; then
AC_MSG_WARN([
The freetype-config script installed by FreeType 2 could not be found.
If FreeType 2 was installed in PREFIX, make sure PREFIX/bin is in
your path, or set the FT2_CONFIG environment variable to the
full path to freetype-config.
])
else
if test x$ft_config_is_lt = xyes ; then
AC_MSG_WARN([
Your installed version of the FreeType 2 library is too old.
If you have different versions of FreeType 2, make sure that
correct values for --with-ft-prefix or --with-ft-exec-prefix
are used, or set the FT2_CONFIG environment variable to the
full path to freetype-config.
])
else
AC_MSG_WARN([
The FreeType test program failed to run. If your system uses
shared libraries and they are installed outside the normal
system library path, make sure the variable LD_LIBRARY_PATH
(or whatever is appropriate for your system) is correctly set.
])
fi
fi
FT2_CFLAGS=""
FT2_LIBS=""
m4_if([$3], [], [:], [$3])
fi
AC_SUBST([FT2_CFLAGS])
AC_SUBST([FT2_LIBS])])
# end of freetype2.m4

10
packages/install/usr/share/doc/expat/AUTHORS Normal file
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Expat is brought to you by:
Clark Cooper
Fred L. Drake, Jr.
Greg Stein
James Clark
Karl Waclawek
Rhodri James
Sebastian Pipping
Steven Solie

1278
packages/install/usr/share/doc/expat/changelog Normal file
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18
packages/install/usr/share/info/dir Normal file
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This is the file .../info/dir, which contains the
topmost node of the Info hierarchy, called (dir)Top.
The first time you invoke Info you start off looking at this node.

File: dir, Node: Top This is the top of the INFO tree
This (the Directory node) gives a menu of major topics.
Typing "q" exits, "H" lists all Info commands, "d" returns here,
"h" gives a primer for first-timers,
"mEmacs<Return>" visits the Emacs manual, etc.
In Emacs, you can click mouse button 2 on a menu item or cross reference
to select it.
* Menu:
Development
* libffi: (libffi). Portable foreign function interface library.

1061
packages/install/usr/share/info/libffi.info Normal file
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508
packages/install/usr/share/libdrm/amdgpu.ids Normal file
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# List of AMDGPU IDs
#
# Syntax:
# device_id, revision_id, product_name <-- single tab after comma
1.0.0
1309, 00, AMD Radeon R7 Graphics
130A, 00, AMD Radeon R6 Graphics
130B, 00, AMD Radeon R4 Graphics
130C, 00, AMD Radeon R7 Graphics
130D, 00, AMD Radeon R6 Graphics
130E, 00, AMD Radeon R5 Graphics
130F, 00, AMD Radeon R7 Graphics
130F, D4, AMD Radeon R7 Graphics
130F, D5, AMD Radeon R7 Graphics
130F, D6, AMD Radeon R7 Graphics
130F, D7, AMD Radeon R7 Graphics
1313, 00, AMD Radeon R7 Graphics
1313, D4, AMD Radeon R7 Graphics
1313, D5, AMD Radeon R7 Graphics
1313, D6, AMD Radeon R7 Graphics
1315, 00, AMD Radeon R5 Graphics
1315, D4, AMD Radeon R5 Graphics
1315, D5, AMD Radeon R5 Graphics
1315, D6, AMD Radeon R5 Graphics
1315, D7, AMD Radeon R5 Graphics
1316, 00, AMD Radeon R5 Graphics
1318, 00, AMD Radeon R5 Graphics
131B, 00, AMD Radeon R4 Graphics
131C, 00, AMD Radeon R7 Graphics
131D, 00, AMD Radeon R6 Graphics
15D8, 00, AMD Radeon RX Vega 8 Graphics WS
15D8, 91, AMD Radeon Vega 3 Graphics
15D8, 91, AMD Ryzen Embedded R1606G with Radeon Vega Gfx
15D8, 92, AMD Radeon Vega 3 Graphics
15D8, 92, AMD Ryzen Embedded R1505G with Radeon Vega Gfx
15D8, 93, AMD Radeon Vega 1 Graphics
15D8, A1, AMD Radeon Vega 10 Graphics
15D8, A2, AMD Radeon Vega 8 Graphics
15D8, A3, AMD Radeon Vega 6 Graphics
15D8, A4, AMD Radeon Vega 3 Graphics
15D8, B1, AMD Radeon Vega 10 Graphics
15D8, B2, AMD Radeon Vega 8 Graphics
15D8, B3, AMD Radeon Vega 6 Graphics
15D8, B4, AMD Radeon Vega 3 Graphics
15D8, C1, AMD Radeon Vega 10 Graphics
15D8, C2, AMD Radeon Vega 8 Graphics
15D8, C3, AMD Radeon Vega 6 Graphics
15D8, C4, AMD Radeon Vega 3 Graphics
15D8, C5, AMD Radeon Vega 3 Graphics
15D8, C8, AMD Radeon Vega 11 Graphics
15D8, C9, AMD Radeon Vega 8 Graphics
15D8, CA, AMD Radeon Vega 11 Graphics
15D8, CB, AMD Radeon Vega 8 Graphics
15D8, CC, AMD Radeon Vega 3 Graphics
15D8, CE, AMD Radeon Vega 3 Graphics
15D8, CF, AMD Ryzen Embedded R1305G with Radeon Vega Gfx
15D8, D1, AMD Radeon Vega 10 Graphics
15D8, D2, AMD Radeon Vega 8 Graphics
15D8, D3, AMD Radeon Vega 6 Graphics
15D8, D4, AMD Radeon Vega 3 Graphics
15D8, D8, AMD Radeon Vega 11 Graphics
15D8, D9, AMD Radeon Vega 8 Graphics
15D8, DA, AMD Radeon Vega 11 Graphics
15D8, DB, AMD Radeon Vega 3 Graphics
15D8, DB, AMD Radeon Vega 8 Graphics
15D8, DC, AMD Radeon Vega 3 Graphics
15D8, DD, AMD Radeon Vega 3 Graphics
15D8, DE, AMD Radeon Vega 3 Graphics
15D8, DF, AMD Radeon Vega 3 Graphics
15D8, E3, AMD Radeon Vega 3 Graphics
15D8, E4, AMD Ryzen Embedded R1102G with Radeon Vega Gfx
15DD, 81, AMD Ryzen Embedded V1807B with Radeon Vega Gfx
15DD, 82, AMD Ryzen Embedded V1756B with Radeon Vega Gfx
15DD, 83, AMD Ryzen Embedded V1605B with Radeon Vega Gfx
15DD, 84, AMD Radeon Vega 6 Graphics
15DD, 85, AMD Ryzen Embedded V1202B with Radeon Vega Gfx
15DD, 86, AMD Radeon Vega 11 Graphics
15DD, 88, AMD Radeon Vega 8 Graphics
15DD, C1, AMD Radeon Vega 11 Graphics
15DD, C2, AMD Radeon Vega 8 Graphics
15DD, C3, AMD Radeon Vega 3 / 10 Graphics
15DD, C4, AMD Radeon Vega 8 Graphics
15DD, C5, AMD Radeon Vega 3 Graphics
15DD, C6, AMD Radeon Vega 11 Graphics
15DD, C8, AMD Radeon Vega 8 Graphics
15DD, C9, AMD Radeon Vega 11 Graphics
15DD, CA, AMD Radeon Vega 8 Graphics
15DD, CB, AMD Radeon Vega 3 Graphics
15DD, CC, AMD Radeon Vega 6 Graphics
15DD, CE, AMD Radeon Vega 3 Graphics
15DD, CF, AMD Radeon Vega 3 Graphics
15DD, D0, AMD Radeon Vega 10 Graphics
15DD, D1, AMD Radeon Vega 8 Graphics
15DD, D3, AMD Radeon Vega 11 Graphics
15DD, D5, AMD Radeon Vega 8 Graphics
15DD, D6, AMD Radeon Vega 11 Graphics
15DD, D7, AMD Radeon Vega 8 Graphics
15DD, D8, AMD Radeon Vega 3 Graphics
15DD, D9, AMD Radeon Vega 6 Graphics
15DD, E1, AMD Radeon Vega 3 Graphics
15DD, E2, AMD Radeon Vega 3 Graphics
163F, AE, AMD Custom GPU 0405
6600, 00, AMD Radeon HD 8600 / 8700M
6600, 81, AMD Radeon R7 M370
6601, 00, AMD Radeon HD 8500M / 8700M
6604, 00, AMD Radeon R7 M265 Series
6604, 81, AMD Radeon R7 M350
6605, 00, AMD Radeon R7 M260 Series
6605, 81, AMD Radeon R7 M340
6606, 00, AMD Radeon HD 8790M
6607, 00, AMD Radeon R5 M240
6608, 00, AMD FirePro W2100
6610, 00, AMD Radeon R7 200 Series
6610, 81, AMD Radeon R7 350
6610, 83, AMD Radeon R5 340
6610, 87, AMD Radeon R7 200 Series
6611, 00, AMD Radeon R7 200 Series
6611, 87, AMD Radeon R7 200 Series
6613, 00, AMD Radeon R7 200 Series
6617, 00, AMD Radeon R7 240 Series
6617, 87, AMD Radeon R7 200 Series
6617, C7, AMD Radeon R7 240 Series
6640, 00, AMD Radeon HD 8950
6640, 80, AMD Radeon R9 M380
6646, 00, AMD Radeon R9 M280X
6646, 80, AMD Radeon R9 M385
6646, 80, AMD Radeon R9 M470X
6647, 00, AMD Radeon R9 M200X Series
6647, 80, AMD Radeon R9 M380
6649, 00, AMD FirePro W5100
6658, 00, AMD Radeon R7 200 Series
665C, 00, AMD Radeon HD 7700 Series
665D, 00, AMD Radeon R7 200 Series
665F, 81, AMD Radeon R7 360 Series
6660, 00, AMD Radeon HD 8600M Series
6660, 81, AMD Radeon R5 M335
6660, 83, AMD Radeon R5 M330
6663, 00, AMD Radeon HD 8500M Series
6663, 83, AMD Radeon R5 M320
6664, 00, AMD Radeon R5 M200 Series
6665, 00, AMD Radeon R5 M230 Series
6665, 83, AMD Radeon R5 M320
6665, C3, AMD Radeon R5 M435
6666, 00, AMD Radeon R5 M200 Series
6667, 00, AMD Radeon R5 M200 Series
666F, 00, AMD Radeon HD 8500M
66A1, 02, AMD Instinct MI60 / MI50
66A1, 06, AMD Radeon Pro VII
66AF, C1, AMD Radeon VII
6780, 00, AMD FirePro W9000
6784, 00, ATI FirePro V (FireGL V) Graphics Adapter
6788, 00, ATI FirePro V (FireGL V) Graphics Adapter
678A, 00, AMD FirePro W8000
6798, 00, AMD Radeon R9 200 / HD 7900 Series
6799, 00, AMD Radeon HD 7900 Series
679A, 00, AMD Radeon HD 7900 Series
679B, 00, AMD Radeon HD 7900 Series
679E, 00, AMD Radeon HD 7800 Series
67A0, 00, AMD Radeon FirePro W9100
67A1, 00, AMD Radeon FirePro W8100
67B0, 00, AMD Radeon R9 200 Series
67B0, 80, AMD Radeon R9 390 Series
67B1, 00, AMD Radeon R9 200 Series
67B1, 80, AMD Radeon R9 390 Series
67B9, 00, AMD Radeon R9 200 Series
67C0, 00, AMD Radeon Pro WX 7100 Graphics
67C0, 80, AMD Radeon E9550
67C2, 01, AMD Radeon Pro V7350x2
67C2, 02, AMD Radeon Pro V7300X
67C4, 00, AMD Radeon Pro WX 7100 Graphics
67C4, 80, AMD Radeon E9560 / E9565 Graphics
67C7, 00, AMD Radeon Pro WX 5100 Graphics
67C7, 80, AMD Radeon E9390 Graphics
67D0, 01, AMD Radeon Pro V7350x2
67D0, 02, AMD Radeon Pro V7300X
67DF, C0, AMD Radeon Pro 580X
67DF, C1, AMD Radeon RX 580 Series
67DF, C2, AMD Radeon RX 570 Series
67DF, C3, AMD Radeon RX 580 Series
67DF, C4, AMD Radeon RX 480 Graphics
67DF, C5, AMD Radeon RX 470 Graphics
67DF, C6, AMD Radeon RX 570 Series
67DF, C7, AMD Radeon RX 480 Graphics
67DF, CF, AMD Radeon RX 470 Graphics
67DF, D7, AMD Radeon RX 470 Graphics
67DF, E0, AMD Radeon RX 470 Series
67DF, E1, AMD Radeon RX 590 Series
67DF, E3, AMD Radeon RX Series
67DF, E7, AMD Radeon RX 580 Series
67DF, EB, AMD Radeon Pro 580X
67DF, EF, AMD Radeon RX 570 Series
67DF, F7, AMD Radeon RX P30PH
67DF, FF, AMD Radeon RX 470 Series
67E0, 00, AMD Radeon Pro WX Series
67E3, 00, AMD Radeon Pro WX 4100
67E8, 00, AMD Radeon Pro WX Series
67E8, 01, AMD Radeon Pro WX Series
67E8, 80, AMD Radeon E9260 Graphics
67EB, 00, AMD Radeon Pro V5300X
67EF, C0, AMD Radeon RX Graphics
67EF, C1, AMD Radeon RX 460 Graphics
67EF, C2, AMD Radeon Pro Series
67EF, C3, AMD Radeon RX Series
67EF, C5, AMD Radeon RX 460 Graphics
67EF, C7, AMD Radeon RX Graphics
67EF, CF, AMD Radeon RX 460 Graphics
67EF, E0, AMD Radeon RX 560 Series
67EF, E1, AMD Radeon RX Series
67EF, E2, AMD Radeon RX 560X
67EF, E3, AMD Radeon RX Series
67EF, E5, AMD Radeon RX 560 Series
67EF, E7, AMD Radeon RX 560 Series
67EF, EF, AMD Radeon 550 Series
67EF, FF, AMD Radeon RX 460 Graphics
67FF, C0, AMD Radeon Pro 465
67FF, C1, AMD Radeon RX 560 Series
67FF, CF, AMD Radeon RX 560 Series
67FF, EF, AMD Radeon RX 560 Series
67FF, FF, AMD Radeon RX 550 Series
6800, 00, AMD Radeon HD 7970M
6801, 00, AMD Radeon HD 8970M
6806, 00, AMD Radeon R9 M290X
6808, 00, AMD FirePro W7000
6808, 00, ATI FirePro V (FireGL V) Graphics Adapter
6809, 00, ATI FirePro W5000
6810, 00, AMD Radeon R9 200 Series
6810, 81, AMD Radeon R9 370 Series
6811, 00, AMD Radeon R9 200 Series
6811, 81, AMD Radeon R7 370 Series
6818, 00, AMD Radeon HD 7800 Series
6819, 00, AMD Radeon HD 7800 Series
6820, 00, AMD Radeon R9 M275X
6820, 81, AMD Radeon R9 M375
6820, 83, AMD Radeon R9 M375X
6821, 00, AMD Radeon R9 M200X Series
6821, 83, AMD Radeon R9 M370X
6821, 87, AMD Radeon R7 M380
6822, 00, AMD Radeon E8860
6823, 00, AMD Radeon R9 M200X Series
6825, 00, AMD Radeon HD 7800M Series
6826, 00, AMD Radeon HD 7700M Series
6827, 00, AMD Radeon HD 7800M Series
6828, 00, AMD FirePro W600
682B, 00, AMD Radeon HD 8800M Series
682B, 87, AMD Radeon R9 M360
682C, 00, AMD FirePro W4100
682D, 00, AMD Radeon HD 7700M Series
682F, 00, AMD Radeon HD 7700M Series
6830, 00, AMD Radeon 7800M Series
6831, 00, AMD Radeon 7700M Series
6835, 00, AMD Radeon R7 Series / HD 9000 Series
6837, 00, AMD Radeon HD 7700 Series
683D, 00, AMD Radeon HD 7700 Series
683F, 00, AMD Radeon HD 7700 Series
684C, 00, ATI FirePro V (FireGL V) Graphics Adapter
6860, 00, AMD Radeon Instinct MI25
6860, 01, AMD Radeon Instinct MI25
6860, 02, AMD Radeon Instinct MI25
6860, 03, AMD Radeon Pro V340
6860, 04, AMD Radeon Instinct MI25x2
6860, 07, AMD Radeon Pro V320
6861, 00, AMD Radeon Pro WX 9100
6862, 00, AMD Radeon Pro SSG
6863, 00, AMD Radeon Vega Frontier Edition
6864, 03, AMD Radeon Pro V340
6864, 04, AMD Radeon Instinct MI25x2
6864, 05, AMD Radeon Pro V340
6868, 00, AMD Radeon Pro WX 8200
686C, 00, AMD Radeon Instinct MI25 MxGPU
686C, 01, AMD Radeon Instinct MI25 MxGPU
686C, 02, AMD Radeon Instinct MI25 MxGPU
686C, 03, AMD Radeon Pro V340 MxGPU
686C, 04, AMD Radeon Instinct MI25x2 MxGPU
686C, 05, AMD Radeon Pro V340L MxGPU
686C, 06, AMD Radeon Instinct MI25 MxGPU
687F, 01, AMD Radeon RX Vega
687F, C0, AMD Radeon RX Vega
687F, C1, AMD Radeon RX Vega
687F, C3, AMD Radeon RX Vega
687F, C7, AMD Radeon RX Vega
6900, 00, AMD Radeon R7 M260
6900, 81, AMD Radeon R7 M360
6900, 83, AMD Radeon R7 M340
6900, C1, AMD Radeon R5 M465 Series
6900, C3, AMD Radeon R5 M445 Series
6900, D1, AMD Radeon 530 Series
6900, D3, AMD Radeon 530 Series
6901, 00, AMD Radeon R5 M255
6902, 00, AMD Radeon Series
6907, 00, AMD Radeon R5 M255
6907, 87, AMD Radeon R5 M315
6920, 00, AMD Radeon R9 M395X
6920, 01, AMD Radeon R9 M390X
6921, 00, AMD Radeon R9 M390X
6929, 00, AMD FirePro S7150
6929, 01, AMD FirePro S7100X
692B, 00, AMD FirePro W7100
6938, 00, AMD Radeon R9 200 Series
6938, F0, AMD Radeon R9 200 Series
6938, F1, AMD Radeon R9 380 Series
6939, 00, AMD Radeon R9 200 Series
6939, F0, AMD Radeon R9 200 Series
6939, F1, AMD Radeon R9 380 Series
694C, C0, AMD Radeon RX Vega M GH Graphics
694E, C0, AMD Radeon RX Vega M GL Graphics
6980, 00, AMD Radeon Pro WX 3100
6981, 00, AMD Radeon Pro WX 3200 Series
6981, 01, AMD Radeon Pro WX 3200 Series
6981, 10, AMD Radeon Pro WX 3200 Series
6985, 00, AMD Radeon Pro WX 3100
6986, 00, AMD Radeon Pro WX 2100
6987, 80, AMD Embedded Radeon E9171
6987, C0, AMD Radeon 550X Series
6987, C1, AMD Radeon RX 640
6987, C3, AMD Radeon 540X Series
6987, C7, AMD Radeon 540
6995, 00, AMD Radeon Pro WX 2100
6997, 00, AMD Radeon Pro WX 2100
699F, 81, AMD Embedded Radeon E9170 Series
699F, C0, AMD Radeon 500 Series
699F, C1, AMD Radeon 540 Series
699F, C3, AMD Radeon 500 Series
699F, C7, AMD Radeon RX 550 / 550 Series
699F, C9, AMD Radeon 540
6FDF, E7, AMD Radeon RX 590 GME
6FDF, EF, AMD Radeon RX 580 2048SP
7300, C1, AMD FirePro S9300 x2
7300, C8, AMD Radeon R9 Fury Series
7300, C9, AMD Radeon Pro Duo
7300, CA, AMD Radeon R9 Fury Series
7300, CB, AMD Radeon R9 Fury Series
7312, 00, AMD Radeon Pro W5700
731E, C6, AMD Radeon RX 5700XTB
731E, C7, AMD Radeon RX 5700B
731F, C0, AMD Radeon RX 5700 XT 50th Anniversary
731F, C1, AMD Radeon RX 5700 XT
731F, C2, AMD Radeon RX 5600M
731F, C3, AMD Radeon RX 5700M
731F, C4, AMD Radeon RX 5700
731F, C5, AMD Radeon RX 5700 XT
731F, CA, AMD Radeon RX 5600 XT
731F, CB, AMD Radeon RX 5600 OEM
7340, C1, AMD Radeon RX 5500M
7340, C3, AMD Radeon RX 5300M
7340, C5, AMD Radeon RX 5500 XT
7340, C7, AMD Radeon RX 5500
7340, C9, AMD Radeon RX 5500XTB
7340, CF, AMD Radeon RX 5300
7341, 00, AMD Radeon Pro W5500
7347, 00, AMD Radeon Pro W5500M
7360, 41, AMD Radeon Pro 5600M
7360, C3, AMD Radeon Pro V520
7362, C1, AMD Radeon Pro V540
7362, C3, AMD Radeon Pro V520
738C, 01, AMD Instinct MI100
73A1, 00, AMD Radeon Pro V620
73A3, 00, AMD Radeon Pro W6800
73A5, C0, AMD Radeon RX 6950 XT
73AE, 00, AMD Radeon Pro V620
73AF, C0, AMD Radeon RX 6900 XT
73BF, C0, AMD Radeon RX 6900 XT
73BF, C1, AMD Radeon RX 6800 XT
73BF, C3, AMD Radeon RX 6800
73DF, C0, AMD Radeon RX 6750 XT
73DF, C1, AMD Radeon RX 6700 XT
73DF, C2, AMD Radeon RX 6800M
73DF, C3, AMD Radeon RX 6800M
73DF, C5, AMD Radeon RX 6700 XT
73DF, CF, AMD Radeon RX 6700M
73DF, D7, AMD TDC-235
73E1, 00, AMD Radeon Pro W6600M
73E3, 00, AMD Radeon Pro W6600
73EF, C0, AMD Radeon RX 6800S
73EF, C1, AMD Radeon RX 6650 XT
73EF, C2, AMD Radeon RX 6700S
73EF, C3, AMD Radeon RX 6650M
73EF, C4, AMD Radeon RX 6650M XT
73FF, C1, AMD Radeon RX 6600 XT
73FF, C3, AMD Radeon RX 6600M
73FF, C7, AMD Radeon RX 6600
73FF, CB, AMD Radeon RX 6600S
7408, 00, AMD Instinct MI250X
740C, 01, AMD Instinct MI250X / MI250
740F, 02, AMD Instinct MI210
7421, 00, AMD Radeon Pro W6500M
7422, 00, AMD Radeon Pro W6400
7423, 00, AMD Radeon Pro W6300M
7423, 01, AMD Radeon Pro W6300
7424, 00, AMD Radeon RX 6300
743F, C1, AMD Radeon RX 6500 XT
743F, C3, AMD Radeon RX 6500
743F, C3, AMD Radeon RX 6500M
743F, C7, AMD Radeon RX 6400
743F, C8, AMD Radeon RX 6500M
743F, CC, AMD Radeon 6550S
743F, CF, AMD Radeon RX 6300M
743F, D7, AMD Radeon RX 6400
7448, 00, AMD Radeon Pro W7900
744C, C8, AMD Radeon RX 7900 XTX
744C, CC, AMD Radeon RX 7900 XT
744C, CE, AMD Radeon RX 7900 GRE
745E, CC, AMD Radeon Pro W7800
747E, C8, AMD Radeon RX 7800 XT
747E, FF, AMD Radeon RX 7700 XT
7480, 00, AMD Radeon Pro W7600
7480, C1, AMD Radeon RX 7700S
7480, C3, AMD Radeon RX 7600S
7480, C7, AMD Radeon RX 7600M XT
7480, CF, AMD Radeon RX 7600
7483, CF, AMD Radeon RX 7600M
7489, 00, AMD Radeon Pro W7500
9830, 00, AMD Radeon HD 8400 / R3 Series
9831, 00, AMD Radeon HD 8400E
9832, 00, AMD Radeon HD 8330
9833, 00, AMD Radeon HD 8330E
9834, 00, AMD Radeon HD 8210
9835, 00, AMD Radeon HD 8210E
9836, 00, AMD Radeon HD 8200 / R3 Series
9837, 00, AMD Radeon HD 8280E
9838, 00, AMD Radeon HD 8200 / R3 series
9839, 00, AMD Radeon HD 8180
983D, 00, AMD Radeon HD 8250
9850, 00, AMD Radeon R3 Graphics
9850, 03, AMD Radeon R3 Graphics
9850, 40, AMD Radeon R2 Graphics
9850, 45, AMD Radeon R3 Graphics
9851, 00, AMD Radeon R4 Graphics
9851, 01, AMD Radeon R5E Graphics
9851, 05, AMD Radeon R5 Graphics
9851, 06, AMD Radeon R5E Graphics
9851, 40, AMD Radeon R4 Graphics
9851, 45, AMD Radeon R5 Graphics
9852, 00, AMD Radeon R2 Graphics
9852, 40, AMD Radeon E1 Graphics
9853, 00, AMD Radeon R2 Graphics
9853, 01, AMD Radeon R4E Graphics
9853, 03, AMD Radeon R2 Graphics
9853, 05, AMD Radeon R1E Graphics
9853, 06, AMD Radeon R1E Graphics
9853, 07, AMD Radeon R1E Graphics
9853, 08, AMD Radeon R1E Graphics
9853, 40, AMD Radeon R2 Graphics
9854, 00, AMD Radeon R3 Graphics
9854, 01, AMD Radeon R3E Graphics
9854, 02, AMD Radeon R3 Graphics
9854, 05, AMD Radeon R2 Graphics
9854, 06, AMD Radeon R4 Graphics
9854, 07, AMD Radeon R3 Graphics
9855, 02, AMD Radeon R6 Graphics
9855, 05, AMD Radeon R4 Graphics
9856, 00, AMD Radeon R2 Graphics
9856, 01, AMD Radeon R2E Graphics
9856, 02, AMD Radeon R2 Graphics
9856, 05, AMD Radeon R1E Graphics
9856, 06, AMD Radeon R2 Graphics
9856, 07, AMD Radeon R1E Graphics
9856, 08, AMD Radeon R1E Graphics
9856, 13, AMD Radeon R1E Graphics
9874, 81, AMD Radeon R6 Graphics
9874, 84, AMD Radeon R7 Graphics
9874, 85, AMD Radeon R6 Graphics
9874, 87, AMD Radeon R5 Graphics
9874, 88, AMD Radeon R7E Graphics
9874, 89, AMD Radeon R6E Graphics
9874, C4, AMD Radeon R7 Graphics
9874, C5, AMD Radeon R6 Graphics
9874, C6, AMD Radeon R6 Graphics
9874, C7, AMD Radeon R5 Graphics
9874, C8, AMD Radeon R7 Graphics
9874, C9, AMD Radeon R7 Graphics
9874, CA, AMD Radeon R5 Graphics
9874, CB, AMD Radeon R5 Graphics
9874, CC, AMD Radeon R7 Graphics
9874, CD, AMD Radeon R7 Graphics
9874, CE, AMD Radeon R5 Graphics
9874, E1, AMD Radeon R7 Graphics
9874, E2, AMD Radeon R7 Graphics
9874, E3, AMD Radeon R7 Graphics
9874, E4, AMD Radeon R7 Graphics
9874, E5, AMD Radeon R5 Graphics
9874, E6, AMD Radeon R5 Graphics
98E4, 80, AMD Radeon R5E Graphics
98E4, 81, AMD Radeon R4E Graphics
98E4, 83, AMD Radeon R2E Graphics
98E4, 84, AMD Radeon R2E Graphics
98E4, 86, AMD Radeon R1E Graphics
98E4, C0, AMD Radeon R4 Graphics
98E4, C1, AMD Radeon R5 Graphics
98E4, C2, AMD Radeon R4 Graphics
98E4, C4, AMD Radeon R5 Graphics
98E4, C6, AMD Radeon R5 Graphics
98E4, C8, AMD Radeon R4 Graphics
98E4, C9, AMD Radeon R4 Graphics
98E4, CA, AMD Radeon R5 Graphics
98E4, D0, AMD Radeon R2 Graphics
98E4, D1, AMD Radeon R2 Graphics
98E4, D2, AMD Radeon R2 Graphics
98E4, D4, AMD Radeon R2 Graphics
98E4, D9, AMD Radeon R5 Graphics
98E4, DA, AMD Radeon R5 Graphics
98E4, DB, AMD Radeon R3 Graphics
98E4, E1, AMD Radeon R3 Graphics
98E4, E2, AMD Radeon R3 Graphics
98E4, E9, AMD Radeon R4 Graphics
98E4, EA, AMD Radeon R4 Graphics
98E4, EB, AMD Radeon R3 Graphics
98E4, EB, AMD Radeon R4 Graphics

387
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.TH CJPEG 1 "26 July 2015"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
.B cjpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B cjpeg
compresses the named image file, or the standard input if no file is
named, and produces a JPEG/JFIF file on the standard output.
The currently supported input file formats are: PPM (PBMPLUS color
format), PGM (PBMPLUS grayscale format), BMP, Targa, and RLE (Utah Raster
Toolkit format). (RLE is supported only if the URT library is available.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.,
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-quality " N[,...]"
Scale quantization tables to adjust image quality. Quality is 0 (worst) to
100 (best); default is 75. (See below for more info.)
.TP
.B \-grayscale
Create monochrome JPEG file from color input. Be sure to use this switch when
compressing a grayscale BMP file, because
.B cjpeg
isn't bright enough to notice whether a BMP file uses only shades of gray.
By saying
.BR \-grayscale ,
you'll get a smaller JPEG file that takes less time to process.
.TP
.B \-rgb
Create RGB JPEG file.
Using this switch suppresses the conversion from RGB
colorspace input to the default YCbCr JPEG colorspace.
You can use this switch in combination with the
.BI \-block " N"
switch (see below) for lossless JPEG coding.
See also the
.B \-rgb1
switch below.
.TP
.B \-optimize
Perform optimization of entropy encoding parameters. Without this, default
encoding parameters are used.
.B \-optimize
usually makes the JPEG file a little smaller, but
.B cjpeg
runs somewhat slower and needs much more memory. Image quality and speed of
decompression are unaffected by
.BR \-optimize .
.TP
.B \-progressive
Create progressive JPEG file (see below).
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all N from 1 to 16, where M is the destination DCT size, which is 8
by default (see
.BI \-block " N"
switch below).
.TP
.B \-targa
Input file is Targa format. Targa files that contain an "identification"
field will not be automatically recognized by
.BR cjpeg ;
for such files you must specify
.B \-targa
to make
.B cjpeg
treat the input as Targa format.
For most Targa files, you won't need this switch.
.PP
The
.B \-quality
switch lets you trade off compressed file size against quality of the
reconstructed image: the higher the quality setting, the larger the JPEG file,
and the closer the output image will be to the original input. Normally you
want to use the lowest quality setting (smallest file) that decompresses into
something visually indistinguishable from the original image. For this
purpose the quality setting should be between 50 and 95; the default of 75 is
often about right. If you see defects at
.B \-quality
75, then go up 5 or 10 counts at a time until you are happy with the output
image. (The optimal setting will vary from one image to another.)
.PP
.B \-quality
100 will generate a quantization table of all 1's, minimizing loss in the
quantization step (but there is still information loss in subsampling, as well
as roundoff error). This setting is mainly of interest for experimental
purposes. Quality values above about 95 are
.B not
recommended for normal use; the compressed file size goes up dramatically for
hardly any gain in output image quality.
.PP
In the other direction, quality values below 50 will produce very small files
of low image quality. Settings around 5 to 10 might be useful in preparing an
index of a large image library, for example. Try
.B \-quality
2 (or so) for some amusing Cubist effects. (Note: quality
values below about 25 generate 2-byte quantization tables, which are
considered optional in the JPEG standard.
.B cjpeg
emits a warning message when you give such a quality value, because some
other JPEG programs may be unable to decode the resulting file. Use
.B \-baseline
if you need to ensure compatibility at low quality values.)
.PP
The
.B \-quality
option has been extended in IJG version 7 for support of separate quality
settings for luminance and chrominance (or in general, for every provided
quantization table slot). This feature is useful for high-quality
applications which cannot accept the damage of color data by coarse
subsampling settings. You can now easily reduce the color data amount more
smoothly with finer control without separate subsampling. The resulting file
is fully compliant with standard JPEG decoders.
Note that the
.B \-quality
ratings refer to the quantization table slots, and that the last value is
replicated if there are more q-table slots than parameters. The default
q-table slots are 0 for luminance and 1 for chrominance with default tables as
given in the JPEG standard. This is compatible with the old behaviour in case
that only one parameter is given, which is then used for both luminance and
chrominance (slots 0 and 1). More or custom quantization tables can be set
with
.B \-qtables
and assigned to components with
.B \-qslots
parameter (see the "wizard" switches below).
.B Caution:
You must explicitly add
.BI \-sample " 1x1"
for efficient separate color
quality selection, since the default value used by library is 2x2!
.PP
The
.B \-progressive
switch creates a "progressive JPEG" file. In this type of JPEG file, the data
is stored in multiple scans of increasing quality. If the file is being
transmitted over a slow communications link, the decoder can use the first
scan to display a low-quality image very quickly, and can then improve the
display with each subsequent scan. The final image is exactly equivalent to a
standard JPEG file of the same quality setting, and the total file size is
about the same --- often a little smaller.
.PP
Switches for advanced users:
.TP
.B \-arithmetic
Use arithmetic coding.
.B Caution:
arithmetic coded JPEG is not yet widely implemented, so many decoders will
be unable to view an arithmetic coded JPEG file at all.
.TP
.BI \-block " N"
Set DCT block size. All N from 1 to 16 are possible.
Default is 8 (baseline format).
Larger values produce higher compression,
smaller values produce higher quality
(exact DCT stage possible with 1 or 2; with the default quality of 75 and
default Luminance qtable the DCT+Quantization stage is lossless for N=1).
.B Caution:
An implementation of the JPEG SmartScale extension is required for this
feature. SmartScale enabled JPEG is not yet widely implemented, so many
decoders will be unable to view a SmartScale extended JPEG file at all.
.TP
.B \-rgb1
Create RGB JPEG file with reversible color transform.
Works like the
.B \-rgb
switch (see above) and inserts a simple reversible color transform
into the processing which significantly improves the compression.
Use this switch in combination with the
.BI \-block " N"
switch (see above) for lossless JPEG coding.
.B Caution:
A decoder with inverse color transform support is required for
this feature. Reversible color transform support is not yet
widely implemented, so many decoders will be unable to view
a reversible color transformed JPEG file at all.
.TP
.B \-bgycc
Create big gamut YCC JPEG file.
In this type of encoding the color difference components are quantized
further by a factor of 2 compared to the normal Cb/Cr values, thus creating
space to allow larger color values with higher saturation than the normal
gamut limits to be encoded. In order to compensate for the loss of color
fidelity compared to a normal YCC encoded file, the color quantization
tables can be adjusted accordingly. For example,
.B cjpeg \-bgycc \-quality
80,90 will give similar results as
.B cjpeg \-quality
80.
.B Caution:
For correct decompression a decoder with big gamut YCC support (JFIF
version 2) is required. An old decoder may or may not display a big
gamut YCC encoded JPEG file, depending on JFIF version check and
corresponding warning/error configuration. In case of a granted
decompression the old decoder will display the image with half
saturated colors.
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
.TP
.B \-dct float
Use floating-point DCT method.
The float method is very slightly more accurate than the int method, but is
much slower unless your machine has very fast floating-point hardware. Also
note that results of the floating-point method may vary slightly across
machines, while the integer methods should give the same results everywhere.
The fast integer method is much less accurate than the other two.
.TP
.B \-nosmooth
Don't use high-quality downsampling.
.TP
.BI \-restart " N"
Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
attached to the number.
.B \-restart 0
(the default) means no restart markers.
.TP
.BI \-smooth " N"
Smooth the input image to eliminate dithering noise. N, ranging from 1 to
100, indicates the strength of smoothing. 0 (the default) means no smoothing.
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.PP
The
.B \-restart
option inserts extra markers that allow a JPEG decoder to resynchronize after
a transmission error. Without restart markers, any damage to a compressed
file will usually ruin the image from the point of the error to the end of the
image; with restart markers, the damage is usually confined to the portion of
the image up to the next restart marker. Of course, the restart markers
occupy extra space. We recommend
.B \-restart 1
for images that will be transmitted across unreliable networks such as Usenet.
.PP
The
.B \-smooth
option filters the input to eliminate fine-scale noise. This is often useful
when converting dithered images to JPEG: a moderate smoothing factor of 10 to
50 gets rid of dithering patterns in the input file, resulting in a smaller
JPEG file and a better-looking image. Too large a smoothing factor will
visibly blur the image, however.
.PP
Switches for wizards:
.TP
.B \-baseline
Force baseline-compatible quantization tables to be generated. This clamps
quantization values to 8 bits even at low quality settings. (This switch is
poorly named, since it does not ensure that the output is actually baseline
JPEG. For example, you can use
.B \-baseline
and
.B \-progressive
together.)
.TP
.BI \-qtables " file"
Use the quantization tables given in the specified text file.
.TP
.BI \-qslots " N[,...]"
Select which quantization table to use for each color component.
.TP
.BI \-sample " HxV[,...]"
Set JPEG sampling factors for each color component.
.TP
.BI \-scans " file"
Use the scan script given in the specified text file.
.PP
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, \fBdon't use them\fR. These switches are
documented further in the file wizard.txt.
.SH EXAMPLES
.LP
This example compresses the PPM file foo.ppm with a quality factor of
60 and saves the output as foo.jpg:
.IP
.B cjpeg \-quality
.I 60 foo.ppm
.B >
.I foo.jpg
.SH HINTS
Color GIF files are not the ideal input for JPEG; JPEG is really intended for
compressing full-color (24-bit) images. In particular, don't try to convert
cartoons, line drawings, and other images that have only a few distinct
colors. GIF works great on these, JPEG does not. If you want to convert a
GIF to JPEG, you should experiment with
.BR cjpeg 's
.B \-quality
and
.B \-smooth
options to get a satisfactory conversion.
.B \-smooth 10
or so is often helpful.
.PP
Avoid running an image through a series of JPEG compression/decompression
cycles. Image quality loss will accumulate; after ten or so cycles the image
may be noticeably worse than it was after one cycle. It's best to use a
lossless format while manipulating an image, then convert to JPEG format when
you are ready to file the image away.
.PP
The
.B \-optimize
option to
.B cjpeg
is worth using when you are making a "final" version for posting or archiving.
It's also a win when you are using low quality settings to make very small
JPEG files; the percentage improvement is often a lot more than it is on
larger files. (At present,
.B \-optimize
mode is always selected when generating progressive JPEG files.)
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR djpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
GIF input files are no longer supported, to avoid the Unisys LZW patent
(now expired).
(Conversion of GIF files to JPEG is usually a bad idea anyway.)
.PP
Not all variants of BMP and Targa file formats are supported.
.PP
The
.B \-targa
switch is not a bug, it's a feature. (It would be a bug if the Targa format
designers had not been clueless.)

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.TH DJPEG 1 "26 July 2015"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
.B djpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B djpeg
decompresses the named JPEG file, or the standard input if no file is named,
and produces an image file on the standard output. PBMPLUS (PPM/PGM), BMP,
GIF, Targa, or RLE (Utah Raster Toolkit) output format can be selected.
(RLE is supported only if the URT library is available.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.,
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-colors " N"
Reduce image to at most N colors. This reduces the number of colors used in
the output image, so that it can be displayed on a colormapped display or
stored in a colormapped file format. For example, if you have an 8-bit
display, you'd need to reduce to 256 or fewer colors.
.TP
.BI \-quantize " N"
Same as
.BR \-colors .
.B \-colors
is the recommended name,
.B \-quantize
is provided only for backwards compatibility.
.TP
.B \-fast
Select recommended processing options for fast, low quality output. (The
default options are chosen for highest quality output.) Currently, this is
equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
.TP
.B \-grayscale
Force grayscale output even if JPEG file is color.
Useful for viewing on monochrome displays; also,
.B djpeg
runs noticeably faster in this mode.
.TP
.B \-rgb
Force RGB output even if JPEG file is grayscale.
This is provided to support applications that don't
want to cope with grayscale as a separate case.
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for
baseline JPEG. If the /N part is omitted, then M specifies the DCT scaled
size to be applied on the given input. For baseline JPEG this is equivalent
to M/8 scaling, since the source DCT size for baseline JPEG is 8.
Scaling is handy if the image is larger than your screen; also,
.B djpeg
runs much faster when scaling down the output.
.TP
.B \-bmp
Select BMP output format (Windows flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
format is emitted.
.TP
.B \-gif
Select GIF output format. Since GIF does not support more than 256 colors,
.B \-colors 256
is assumed (unless you specify a smaller number of colors).
.TP
.B \-os2
Select BMP output format (OS/2 1.x flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
format is emitted.
.TP
.B \-pnm
Select PBMPLUS (PPM/PGM) output format (this is the default format).
PGM is emitted if the JPEG file is grayscale or if
.B \-grayscale
is specified; otherwise PPM is emitted.
.TP
.B \-rle
Select RLE output format. (Requires URT library.)
.TP
.B \-targa
Select Targa output format. Grayscale format is emitted if the JPEG file is
grayscale or if
.B \-grayscale
is specified; otherwise, colormapped format is emitted if
.B \-colors
is specified; otherwise, 24-bit full-color format is emitted.
.PP
Switches for advanced users:
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
.TP
.B \-dct float
Use floating-point DCT method.
The float method is very slightly more accurate than the int method, but is
much slower unless your machine has very fast floating-point hardware. Also
note that results of the floating-point method may vary slightly across
machines, while the integer methods should give the same results everywhere.
The fast integer method is much less accurate than the other two.
.TP
.B \-dither fs
Use Floyd-Steinberg dithering in color quantization.
.TP
.B \-dither ordered
Use ordered dithering in color quantization.
.TP
.B \-dither none
Do not use dithering in color quantization.
By default, Floyd-Steinberg dithering is applied when quantizing colors; this
is slow but usually produces the best results. Ordered dither is a compromise
between speed and quality; no dithering is fast but usually looks awful. Note
that these switches have no effect unless color quantization is being done.
Ordered dither is only available in
.B \-onepass
mode.
.TP
.BI \-map " file"
Quantize to the colors used in the specified image file. This is useful for
producing multiple files with identical color maps, or for forcing a
predefined set of colors to be used. The
.I file
must be a GIF or PPM file. This option overrides
.B \-colors
and
.BR \-onepass .
.TP
.B \-nosmooth
Don't use high-quality upsampling.
.TP
.B \-onepass
Use one-pass instead of two-pass color quantization. The one-pass method is
faster and needs less memory, but it produces a lower-quality image.
.B \-onepass
is ignored unless you also say
.B \-colors
.IR N .
Also, the one-pass method is always used for grayscale output (the two-pass
method is no improvement then).
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.SH EXAMPLES
.LP
This example decompresses the JPEG file foo.jpg, quantizes it to
256 colors, and saves the output in 8-bit BMP format in foo.bmp:
.IP
.B djpeg \-colors 256 \-bmp
.I foo.jpg
.B >
.I foo.bmp
.SH HINTS
To get a quick preview of an image, use the
.B \-grayscale
and/or
.B \-scale
switches.
.B \-grayscale \-scale 1/8
is the fastest case.
.PP
Several options are available that trade off image quality to gain speed.
.B \-fast
turns on the recommended settings.
.PP
.B \-dct fast
and/or
.B \-nosmooth
gain speed at a small sacrifice in quality.
When producing a color-quantized image,
.B \-onepass \-dither ordered
is fast but much lower quality than the default behavior.
.B \-dither none
may give acceptable results in two-pass mode, but is seldom tolerable in
one-pass mode.
.PP
If you are fortunate enough to have very fast floating point hardware,
\fB\-dct float\fR may be even faster than \fB\-dct fast\fR. But on most
machines \fB\-dct float\fR is slower than \fB\-dct int\fR; in this case it is
not worth using, because its theoretical accuracy advantage is too small to be
significant in practice.
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
To avoid the Unisys LZW patent (now expired),
.B djpeg
produces uncompressed GIF files. These are larger than they should be, but
are readable by standard GIF decoders.

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.TH JPEGTRAN 1 "30 September 2017"
.SH NAME
jpegtran \- lossless transformation of JPEG files
.SH SYNOPSIS
.B jpegtran
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B jpegtran
performs various useful transformations of JPEG files.
It can translate the coded representation from one variant of JPEG to another,
for example from baseline JPEG to progressive JPEG or vice versa. It can also
perform some rearrangements of the image data, for example turning an image
from landscape to portrait format by rotation.
.PP
For EXIF files and JPEG files containing Exif data, you may prefer to use
.B exiftran
instead.
.PP
.B jpegtran
works by rearranging the compressed data (DCT coefficients), without
ever fully decoding the image. Therefore, its transformations are lossless:
there is no image degradation at all, which would not be true if you used
.B djpeg
followed by
.B cjpeg
to accomplish the same conversion. But by the same token,
.B jpegtran
cannot perform lossy operations such as changing the image quality. However,
while the image data is losslessly transformed, metadata can be removed. See
the
.B \-copy
option for specifics.
.PP
.B jpegtran
reads the named JPEG/JFIF file, or the standard input if no file is
named, and produces a JPEG/JFIF file on the standard output.
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-optimize
may be written
.B \-opt
or
.BR \-o .
Upper and lower case are equivalent.
British spellings are also accepted (e.g.,
.BR \-optimise ),
though for brevity these are not mentioned below.
.PP
To specify the coded JPEG representation used in the output file,
.B jpegtran
accepts a subset of the switches recognized by
.BR cjpeg :
.TP
.B \-optimize
Perform optimization of entropy encoding parameters.
.TP
.B \-progressive
Create progressive JPEG file.
.TP
.BI \-restart " N"
Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
attached to the number.
.TP
.B \-arithmetic
Use arithmetic coding.
.TP
.BI \-scans " file"
Use the scan script given in the specified text file.
.PP
See
.BR cjpeg (1)
for more details about these switches.
If you specify none of these switches, you get a plain baseline-JPEG output
file. The quality setting and so forth are determined by the input file.
.PP
The image can be losslessly transformed by giving one of these switches:
.TP
.B \-flip horizontal
Mirror image horizontally (left-right).
.TP
.B \-flip vertical
Mirror image vertically (top-bottom).
.TP
.B \-rotate 90
Rotate image 90 degrees clockwise.
.TP
.B \-rotate 180
Rotate image 180 degrees.
.TP
.B \-rotate 270
Rotate image 270 degrees clockwise (or 90 ccw).
.TP
.B \-transpose
Transpose image (across UL-to-LR axis).
.TP
.B \-transverse
Transverse transpose (across UR-to-LL axis).
.IP
The transpose transformation has no restrictions regarding image dimensions.
The other transformations operate rather oddly if the image dimensions are not
a multiple of the iMCU size (usually 8 or 16 pixels), because they can only
transform complete blocks of DCT coefficient data in the desired way.
.IP
.BR jpegtran 's
default behavior when transforming an odd-size image is designed
to preserve exact reversibility and mathematical consistency of the
transformation set. As stated, transpose is able to flip the entire image
area. Horizontal mirroring leaves any partial iMCU column at the right edge
untouched, but is able to flip all rows of the image. Similarly, vertical
mirroring leaves any partial iMCU row at the bottom edge untouched, but is
able to flip all columns. The other transforms can be built up as sequences
of transpose and flip operations; for consistency, their actions on edge
pixels are defined to be the same as the end result of the corresponding
transpose-and-flip sequence.
.IP
For practical use, you may prefer to discard any untransformable edge pixels
rather than having a strange-looking strip along the right and/or bottom edges
of a transformed image. To do this, add the
.B \-trim
switch:
.TP
.B \-trim
Drop non-transformable edge blocks.
.IP
Obviously, a transformation with
.B \-trim
is not reversible, so strictly speaking
.B jpegtran
with this switch is not lossless. Also, the expected mathematical
equivalences between the transformations no longer hold. For example,
.B \-rot 270 -trim
trims only the bottom edge, but
.B \-rot 90 -trim
followed by
.B \-rot 180 -trim
trims both edges.
.IP
If you are only interested in perfect transformation, add the
.B \-perfect
switch:
.TP
.B \-perfect
Fails with an error if the transformation is not perfect.
.IP
For example you may want to do
.IP
.B (jpegtran \-rot 90 -perfect
.I foo.jpg
.B || djpeg
.I foo.jpg
.B | pnmflip \-r90 | cjpeg)
.IP
to do a perfect rotation if available or an approximated one if not.
.PP
We also offer a lossless-crop option, which discards data outside a given
image region but losslessly preserves what is inside. Like the rotate and
flip transforms, lossless crop is restricted by the current JPEG format: the
upper left corner of the selected region must fall on an iMCU boundary. If
this does not hold for the given crop parameters, we silently move the upper
left corner up and/or left to make it so, simultaneously increasing the
region dimensions to keep the lower right crop corner unchanged. (Thus, the
output image covers at least the requested region, but may cover more.)
The adjustment of the region dimensions may be optionally disabled by
attaching an 'f' character ("force") to the width or height number.
The image can be losslessly cropped by giving the switch:
.TP
.B \-crop WxH+X+Y
Crop to a rectangular subarea of width W, height H starting at point X,Y.
.PP
A complementary lossless-wipe option is provided to discard (gray out) data
inside a given image region while losslessly preserving what is outside:
.TP
.B \-wipe WxH+X+Y
Wipe (gray out) a rectangular subarea of width W, height H starting at point
X,Y.
.PP
Attaching an 'f' character ("flatten") to the width number will fill
the region with the average of adjacent blocks, instead of gray out.
.PP
Other not-strictly-lossless transformation switches are:
.TP
.B \-grayscale
Force grayscale output.
.IP
This option discards the chrominance channels if the input image is YCbCr
(ie, a standard color JPEG), resulting in a grayscale JPEG file. The
luminance channel is preserved exactly, so this is a better method of reducing
to grayscale than decompression, conversion, and recompression. This switch
is particularly handy for fixing a monochrome picture that was mistakenly
encoded as a color JPEG. (In such a case, the space savings from getting rid
of the near-empty chroma channels won't be large; but the decoding time for
a grayscale JPEG is substantially less than that for a color JPEG.)
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N.
.IP
Currently supported scale factors are M/N with all M from 1 to 16, where N is
the source DCT size, which is 8 for baseline JPEG. If the /N part is omitted,
then M specifies the DCT scaled size to be applied on the given input. For
baseline JPEG this is equivalent to M/8 scaling, since the source DCT size
for baseline JPEG is 8.
.B Caution:
An implementation of the JPEG SmartScale extension is required for this
feature. SmartScale enabled JPEG is not yet widely implemented, so many
decoders will be unable to view a SmartScale extended JPEG file at all.
.PP
.B jpegtran
also recognizes these switches that control what to do with "extra" markers,
such as comment blocks:
.TP
.B \-copy none
Copy no extra markers from source file. This setting suppresses all
comments and other metadata in the source file.
.TP
.B \-copy comments
Copy only comment markers. This setting copies comments from the source file,
but discards any other metadata.
.TP
.B \-copy all
Copy all extra markers. This setting preserves metadata
found in the source file, such as JFIF thumbnails, Exif data, and Photoshop
settings. In some files these extra markers can be sizable. Note that this
option will copy thumbnails as-is; they will not be transformed.
.IP
The default behavior is
.BR "\-copy comments" .
(Note: in IJG releases v6 and v6a,
.B jpegtran
always did the equivalent of
.BR "\-copy none" .)
.PP
Additional switches recognized by jpegtran are:
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.SH EXAMPLES
.LP
This example converts a baseline JPEG file to progressive form:
.IP
.B jpegtran \-progressive
.I foo.jpg
.B >
.I fooprog.jpg
.PP
This example rotates an image 90 degrees clockwise, discarding any
unrotatable edge pixels:
.IP
.B jpegtran \-rot 90 -trim
.I foo.jpg
.B >
.I foo90.jpg
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR djpeg (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
The transform options can't transform odd-size images perfectly. Use
.B \-trim
or
.B \-perfect
if you don't like the results.
.PP
The entire image is read into memory and then written out again, even in
cases where this isn't really necessary. Expect swapping on large images,
especially when using the more complex transform options.

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.TH RDJPGCOM 1 "13 September 2013"
.SH NAME
rdjpgcom \- display text comments from a JPEG file
.SH SYNOPSIS
.B rdjpgcom
[
.B \-raw
]
[
.B \-verbose
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B rdjpgcom
reads the named JPEG/JFIF file, or the standard input if no file is named,
and prints any text comments found in the file on the standard output.
.PP
The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file.
Although the standard doesn't actually define what COM blocks are for, they
are widely used to hold user-supplied text strings. This lets you add
annotations, titles, index terms, etc to your JPEG files, and later retrieve
them as text. COM blocks do not interfere with the image stored in the JPEG
file. The maximum size of a COM block is 64K, but you can have as many of
them as you like in one JPEG file.
.SH OPTIONS
.TP
.B \-raw
Normally
.B rdjpgcom
escapes non-printable characters in comments, for security reasons.
This option avoids that.
.PP
.B \-verbose
Causes
.B rdjpgcom
to also display the JPEG image dimensions.
.PP
Switch names may be abbreviated, and are not case sensitive.
.SH HINTS
.B rdjpgcom
does not depend on the IJG JPEG library. Its source code is intended as an
illustration of the minimum amount of code required to parse a JPEG file
header correctly.
.PP
In
.B \-verbose
mode,
.B rdjpgcom
will also attempt to print the contents of any "APP12" markers as text.
Some digital cameras produce APP12 markers containing useful textual
information. If you like, you can modify the source code to print
other APPn marker types as well.
.SH SEE ALSO
.BR cjpeg (1),
.BR djpeg (1),
.BR jpegtran (1),
.BR wrjpgcom (1)
.SH AUTHOR
Independent JPEG Group

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.TH WRJPGCOM 1 "15 June 1995"
.SH NAME
wrjpgcom \- insert text comments into a JPEG file
.SH SYNOPSIS
.B wrjpgcom
[
.B \-replace
]
[
.BI \-comment " text"
]
[
.BI \-cfile " name"
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B wrjpgcom
reads the named JPEG/JFIF file, or the standard input if no file is named,
and generates a new JPEG/JFIF file on standard output. A comment block is
added to the file.
.PP
The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file.
Although the standard doesn't actually define what COM blocks are for, they
are widely used to hold user-supplied text strings. This lets you add
annotations, titles, index terms, etc to your JPEG files, and later retrieve
them as text. COM blocks do not interfere with the image stored in the JPEG
file. The maximum size of a COM block is 64K, but you can have as many of
them as you like in one JPEG file.
.PP
.B wrjpgcom
adds a COM block, containing text you provide, to a JPEG file.
Ordinarily, the COM block is added after any existing COM blocks; but you
can delete the old COM blocks if you wish.
.SH OPTIONS
Switch names may be abbreviated, and are not case sensitive.
.TP
.B \-replace
Delete any existing COM blocks from the file.
.TP
.BI \-comment " text"
Supply text for new COM block on command line.
.TP
.BI \-cfile " name"
Read text for new COM block from named file.
.PP
If you have only one line of comment text to add, you can provide it on the
command line with
.BR \-comment .
The comment text must be surrounded with quotes so that it is treated as a
single argument. Longer comments can be read from a text file.
.PP
If you give neither
.B \-comment
nor
.BR \-cfile ,
then
.B wrjpgcom
will read the comment text from standard input. (In this case an input image
file name MUST be supplied, so that the source JPEG file comes from somewhere
else.) You can enter multiple lines, up to 64KB worth. Type an end-of-file
indicator (usually control-D) to terminate the comment text entry.
.PP
.B wrjpgcom
will not add a COM block if the provided comment string is empty. Therefore
\fB\-replace \-comment ""\fR can be used to delete all COM blocks from a file.
.SH EXAMPLES
.LP
Add a short comment to in.jpg, producing out.jpg:
.IP
.B wrjpgcom \-c
\fI"View of my back yard" in.jpg
.B >
.I out.jpg
.PP
Attach a long comment previously stored in comment.txt:
.IP
.B wrjpgcom
.I in.jpg
.B <
.I comment.txt
.B >
.I out.jpg
.PP
or equivalently
.IP
.B wrjpgcom
.B -cfile
.I comment.txt
.B <
.I in.jpg
.B >
.I out.jpg
.SH SEE ALSO
.BR cjpeg (1),
.BR djpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1)
.SH AUTHOR
Independent JPEG Group

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.Dd February 15, 2008
.Dt FFI 3
.Sh NAME
.Nm FFI
.Nd Foreign Function Interface
.Sh LIBRARY
libffi, -lffi
.Sh SYNOPSIS
.In ffi.h
.Ft ffi_status
.Fo ffi_prep_cif
.Fa "ffi_cif *cif"
.Fa "ffi_abi abi"
.Fa "unsigned int nargs"
.Fa "ffi_type *rtype"
.Fa "ffi_type **atypes"
.Fc
.Ft void
.Fo ffi_prep_cif_var
.Fa "ffi_cif *cif"
.Fa "ffi_abi abi"
.Fa "unsigned int nfixedargs"
.Fa "unsigned int ntotalargs"
.Fa "ffi_type *rtype"
.Fa "ffi_type **atypes"
.Fc
.Ft void
.Fo ffi_call
.Fa "ffi_cif *cif"
.Fa "void (*fn)(void)"
.Fa "void *rvalue"
.Fa "void **avalue"
.Fc
.Sh DESCRIPTION
The foreign function interface provides a mechanism by which a function can
generate a call to another function at runtime without requiring knowledge of
the called function's interface at compile time.
.Sh SEE ALSO
.Xr ffi_prep_cif 3 ,
.Xr ffi_prep_cif_var 3 ,
.Xr ffi_call 3

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.Dd February 15, 2008
.Dt ffi_call 3
.Sh NAME
.Nm ffi_call
.Nd Invoke a foreign function.
.Sh SYNOPSIS
.In ffi.h
.Ft void
.Fo ffi_call
.Fa "ffi_cif *cif"
.Fa "void (*fn)(void)"
.Fa "void *rvalue"
.Fa "void **avalue"
.Fc
.Sh DESCRIPTION
The
.Nm ffi_call
function provides a simple mechanism for invoking a function without
requiring knowledge of the function's interface at compile time.
.Fa fn
is called with the values retrieved from the pointers in the
.Fa avalue
array. The return value from
.Fa fn
is placed in storage pointed to by
.Fa rvalue .
.Fa cif
contains information describing the data types, sizes and alignments of the
arguments to and return value from
.Fa fn ,
and must be initialized with
.Nm ffi_prep_cif
before it is used with
.Nm ffi_call .
.Pp
.Fa rvalue
must point to storage that is sizeof(ffi_arg) or larger for non-floating point
types. For smaller-sized return value types, the
.Nm ffi_arg
or
.Nm ffi_sarg
integral type must be used to hold
the return value.
.Sh EXAMPLES
.Bd -literal
#include <ffi.h>
#include <stdio.h>
unsigned char
foo(unsigned int, float);
int
main(int argc, const char **argv)
{
ffi_cif cif;
ffi_type *arg_types[2];
void *arg_values[2];
ffi_status status;
// Because the return value from foo() is smaller than sizeof(long), it
// must be passed as ffi_arg or ffi_sarg.
ffi_arg result;
// Specify the data type of each argument. Available types are defined
// in <ffi/ffi.h>.
arg_types[0] = &ffi_type_uint;
arg_types[1] = &ffi_type_float;
// Prepare the ffi_cif structure.
if ((status = ffi_prep_cif(&cif, FFI_DEFAULT_ABI,
2, &ffi_type_uint8, arg_types)) != FFI_OK)
{
// Handle the ffi_status error.
}
// Specify the values of each argument.
unsigned int arg1 = 42;
float arg2 = 5.1;
arg_values[0] = &arg1;
arg_values[1] = &arg2;
// Invoke the function.
ffi_call(&cif, FFI_FN(foo), &result, arg_values);
// The ffi_arg 'result' now contains the unsigned char returned from foo(),
// which can be accessed by a typecast.
printf("result is %hhu", (unsigned char)result);
return 0;
}
// The target function.
unsigned char
foo(unsigned int x, float y)
{
unsigned char result = x - y;
return result;
}
.Ed
.Sh SEE ALSO
.Xr ffi 3 ,
.Xr ffi_prep_cif 3

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.Dd February 15, 2008
.Dt ffi_prep_cif 3
.Sh NAME
.Nm ffi_prep_cif
.Nd Prepare a
.Nm ffi_cif
structure for use with
.Nm ffi_call
.
.Sh SYNOPSIS
.In ffi.h
.Ft ffi_status
.Fo ffi_prep_cif
.Fa "ffi_cif *cif"
.Fa "ffi_abi abi"
.Fa "unsigned int nargs"
.Fa "ffi_type *rtype"
.Fa "ffi_type **atypes"
.Fc
.Sh DESCRIPTION
The
.Nm ffi_prep_cif
function prepares a
.Nm ffi_cif
structure for use with
.Nm ffi_call
.
.Fa abi
specifies a set of calling conventions to use.
.Fa atypes
is an array of
.Fa nargs
pointers to
.Nm ffi_type
structs that describe the data type, size and alignment of each argument.
.Fa rtype
points to an
.Nm ffi_type
that describes the data type, size and alignment of the
return value. Note that to call a variadic function
.Nm ffi_prep_cif_var
must be used instead.
.Sh RETURN VALUES
Upon successful completion,
.Nm ffi_prep_cif
returns
.Nm FFI_OK .
It will return
.Nm FFI_BAD_TYPEDEF
if
.Fa cif
is
.Nm NULL
or
.Fa atypes
or
.Fa rtype
is malformed. If
.Fa abi
does not refer to a valid ABI,
.Nm FFI_BAD_ABI
will be returned. Available ABIs are
defined in
.Nm <ffitarget.h> .
.Sh SEE ALSO
.Xr ffi 3 ,
.Xr ffi_call 3 ,
.Xr ffi_prep_cif_var 3

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.Dd January 25, 2011
.Dt ffi_prep_cif_var 3
.Sh NAME
.Nm ffi_prep_cif_var
.Nd Prepare a
.Nm ffi_cif
structure for use with
.Nm ffi_call
for variadic functions.
.Sh SYNOPSIS
.In ffi.h
.Ft ffi_status
.Fo ffi_prep_cif_var
.Fa "ffi_cif *cif"
.Fa "ffi_abi abi"
.Fa "unsigned int nfixedargs"
.Fa "unsigned int ntotalargs"
.Fa "ffi_type *rtype"
.Fa "ffi_type **atypes"
.Fc
.Sh DESCRIPTION
The
.Nm ffi_prep_cif_var
function prepares a
.Nm ffi_cif
structure for use with
.Nm ffi_call
for variadic functions.
.Fa abi
specifies a set of calling conventions to use.
.Fa atypes
is an array of
.Fa ntotalargs
pointers to
.Nm ffi_type
structs that describe the data type, size and alignment of each argument.
.Fa rtype
points to an
.Nm ffi_type
that describes the data type, size and alignment of the
return value.
.Fa nfixedargs
must contain the number of fixed (non-variadic) arguments.
Note that to call a non-variadic function
.Nm ffi_prep_cif
must be used.
.Sh RETURN VALUES
Upon successful completion,
.Nm ffi_prep_cif_var
returns
.Nm FFI_OK .
It will return
.Nm FFI_BAD_TYPEDEF
if
.Fa cif
is
.Nm NULL
or
.Fa atypes
or
.Fa rtype
is malformed. If
.Fa abi
does not refer to a valid ABI,
.Nm FFI_BAD_ABI
will be returned. Available ABIs are
defined in
.Nm <ffitarget.h>
.
.Sh SEE ALSO
.Xr ffi 3 ,
.Xr ffi_call 3 ,
.Xr ffi_prep_cif 3

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.TH LIBPNGPF 3 "April 1, 2017"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.34
(private functions)
.SH SYNOPSIS
\fB\fB#include \fI\fI"pngpriv.h"
\fB\fBAs of libpng version \fP\fI\fP\fI1.5.1\fP\fB\fP\fB, this section is no longer \fP\fI\fP\fImaintained\fP\fB\fP\fB, now that the private function prototypes are hidden in pngpriv.h and not accessible to applications. Look in pngpriv.h for the prototypes and a short description of each \fI\fIfunction.
.SH DESCRIPTION
The functions previously listed here are used privately by libpng and are not
available for use by applications. They are not "exported" to applications
using shared libraries.
.SH SEE ALSO
.BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
.SH AUTHOR
Glenn Randers-Pehrson

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.TH ZLIB 3 "15 Jan 2017"
.SH NAME
zlib \- compression/decompression library
.SH SYNOPSIS
[see
.I zlib.h
for full description]
.SH DESCRIPTION
The
.I zlib
library is a general purpose data compression library.
The code is thread safe, assuming that the standard library functions
used are thread safe, such as memory allocation routines.
It provides in-memory compression and decompression functions,
including integrity checks of the uncompressed data.
This version of the library supports only one compression method (deflation)
but other algorithms may be added later
with the same stream interface.
.LP
Compression can be done in a single step if the buffers are large enough
or can be done by repeated calls of the compression function.
In the latter case,
the application must provide more input and/or consume the output
(providing more output space) before each call.
.LP
The library also supports reading and writing files in
.IR gzip (1)
(.gz) format
with an interface similar to that of stdio.
.LP
The library does not install any signal handler.
The decoder checks the consistency of the compressed data,
so the library should never crash even in the case of corrupted input.
.LP
All functions of the compression library are documented in the file
.IR zlib.h .
The distribution source includes examples of use of the library
in the files
.I test/example.c
and
.IR test/minigzip.c,
as well as other examples in the
.IR examples/
directory.
.LP
Changes to this version are documented in the file
.I ChangeLog
that accompanies the source.
.LP
.I zlib
is built in to many languages and operating systems, including but not limited to
Java, Python, .NET, PHP, Perl, Ruby, Swift, and Go.
.LP
An experimental package to read and write files in the .zip format,
written on top of
.I zlib
by Gilles Vollant (info@winimage.com),
is available at:
.IP
http://www.winimage.com/zLibDll/minizip.html
and also in the
.I contrib/minizip
directory of the main
.I zlib
source distribution.
.SH "SEE ALSO"
The
.I zlib
web site can be found at:
.IP
http://zlib.net/
.LP
The data format used by the
.I zlib
library is described by RFC
(Request for Comments) 1950 to 1952 in the files:
.IP
http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format)
.br
http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format)
.br
http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format)
.LP
Mark Nelson wrote an article about
.I zlib
for the Jan. 1997 issue of Dr. Dobb's Journal;
a copy of the article is available at:
.IP
http://marknelson.us/1997/01/01/zlib-engine/
.SH "REPORTING PROBLEMS"
Before reporting a problem,
please check the
.I zlib
web site to verify that you have the latest version of
.IR zlib ;
otherwise,
obtain the latest version and see if the problem still exists.
Please read the
.I zlib
FAQ at:
.IP
http://zlib.net/zlib_faq.html
.LP
before asking for help.
Send questions and/or comments to zlib@gzip.org,
or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
.SH AUTHORS AND LICENSE
Version 1.2.11
.LP
Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
.LP
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
.LP
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
.LP
.nr step 1 1
.IP \n[step]. 3
The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
.IP \n+[step].
Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
.IP \n+[step].
This notice may not be removed or altered from any source distribution.
.LP
Jean-loup Gailly Mark Adler
.br
jloup@gzip.org madler@alumni.caltech.edu
.LP
The deflate format used by
.I zlib
was defined by Phil Katz.
The deflate and
.I zlib
specifications were written by L. Peter Deutsch.
Thanks to all the people who reported problems and suggested various
improvements in
.IR zlib ;
who are too numerous to cite here.
.LP
UNIX manual page by R. P. C. Rodgers,
U.S. National Library of Medicine (rodgers@nlm.nih.gov).
.\" end of man page

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.TH PNG 5 "April 1, 2017"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION
PNG (Portable Network Graphics) is an extensible file format for the
lossless, portable, well-compressed storage of raster images. PNG provides
a patent-free replacement for GIF and can also replace many
common uses of TIFF. Indexed-color, grayscale, and truecolor images are
supported, plus an optional alpha channel. Sample depths range from
1 to 16 bits.
.br
PNG is designed to work well in online viewing applications, such as the
World Wide Web, so it is fully streamable with a progressive display
option. PNG is robust, providing both full file integrity checking and
fast, simple detection of common transmission errors. Also, PNG can store
gamma and chromaticity data for improved color matching on heterogeneous
platforms.
.SH "SEE ALSO"
.BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
.LP
PNG specification (second edition), November 2003:
.IP
.br
<https://www.w3.org/TR/2003/REC-PNG-20031110/
PNG 1.2 specification, July 1999:
.IP
.br
https://png-mng.sourceforge.io/pub/png/spec/1.2/
.LP
PNG 1.0 specification, October 1996:
.IP
.br
RFC 2083
.IP
.br
https://www.ietf.org/rfc/rfc2083.txt
.br
or (as a W3C Recommendation) at
.br
https://www.w3.org/TR/REC-png-961001
.SH AUTHORS
This man page: Glenn Randers-Pehrson
.LP
Portable Network Graphics (PNG) Specification (Second Edition)
Information technology - Computer graphics and image processing -
Portable Network Graphics (PNG): Functional specification.
ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others.
.LP
Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999):
Glenn Randers-Pehrson and others (png-list).
.LP
Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
Thomas Boutell and others (png-list).
.LP
.SH COPYRIGHT NOTICE
.LP
This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h
for conditions of use and distribution.
.LP
The PNG Specification (Second Edition) is
Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
.LP
The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.
See the specification for conditions of use and distribution.
.LP
The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
Technology. See the specification for conditions of use and distribution.
.LP
.\" end of man page